JP7144107B1 - Removable insole - Google Patents

Abstract

An object of the present invention is to prevent an insole fixed to a shoe from becoming dirty without removing the insole fixed to the shoe. An insole detachably mounted on an insole fixed to a shoe, wherein the detachable insole is composed of a knitted fabric and a resin layer fused to the knitted fabric, and the knitted fabric is of the same course. A knitted fabric with a single-knit structure in which front stitches and back stitches are always present on the top and the same wale, continuous front stitches of 1 or 2 or more stitches form a convex portion, and 1 or 2 or more continuous stitches A detachable insole made of sheet-like thermoplastic elastomer, wherein the back stitches form concave portions, convex portions are arranged in a checkered pattern or a herringbone pattern, and the resin layer is made of a sheet-like thermoplastic elastomer. [Selection drawing] Fig. 2

Description

The present invention relates to insoles used in shoes.

In normal shoes (leather shoes, pumps, athletic shoes, boots, etc.), cushioning material is placed on the insole to reduce the impact of walking, and a piece of leather or synthetic leather is placed on top of it. An insole is placed inside the shoe in a fixed or affixed manner. For example, see Japanese Patent Application Laid-Open No. 2020-89518 (Patent Document 1).
When the shoes are used for a long period of time, the insole gradually becomes soiled due to perspiration of the wearer's feet and the like. This dirt is difficult to remove even if it is wiped with a cleaner, but since the insole is fixed to the shoe with an adhesive, etc., and it is not visible from the outside while the shoe is worn, even if the insole becomes dirty, it remains intact. most of the time.

In order to eliminate the inconvenience, washable insoles have been proposed. For example, Japanese Utility Model Registration No. 3191216 (Patent Document 2) proposes a washable insole for shoes in which a water absorbing sheet with high water absorption, a cushion sheet and a non-slip sheet are superimposed and the peripheral edges are connected with piping. ing.
In addition, in Japanese Utility Model Registration No. 3069827 (Patent Document 3), a shoe insole having three layers, an upper layer, a middle layer, and a bottom layer, in which a synthetic polymer encapsulating fine particles of tourmaline ore in the upper layer The middle layer is formed of a nonwoven fabric of natural polymer fibers in which fine particles of tourmaline ore, fine particles of activated carbon, and an electrically conductive material are encapsulated, and the bottom layer is made of a cushioning material. Shoe insoles have been proposed. The insole of this shoe has an upper layer thickness of 1 mm or less, a middle layer thickness of 1-2 mm, and a bottom layer thickness of about 3 mm. be.

Japanese Patent Application Laid-Open No. 2020-89518 Utility Model Registration No. 3191216 Utility Model Registration No. 3069827

The insole disclosed in Patent Document 2 uses a urethane sheet as a cushion sheet, and is sewn together with a water-absorbent sheet such as a terry cloth and a non-slip sheet by piping or the like, so it is thick.
As disclosed in Patent Document 3, the insole has a thickness of at least about 5 mm.
The insoles disclosed in Patent Documents 2 and 3 are intended to replace existing insoles fixed to shoes. That is, the insoles disclosed in Patent Documents 2 and 3 are thick, so when worn on the insole fixed to the shoes on hand, the inside of the shoes becomes narrow and cramped, making it difficult to wear the shoes. I can't do it. Therefore, when using the insoles disclosed in Patent Documents 2 and 3, the insoles for fixing the shoes are removed from commercially available shoes, and the disclosed insoles are used. .

An object of the present invention is to prevent soiling of an insole fixed to a shoe without removing the insole fixed to the shoe from a completely different point of view from conventional washable insoles.
SUMMARY OF THE INVENTION It is an object of the present invention to provide a detachable insole that can be detachably attached to an insole fixed to a shoe, improves the comfort of wearing the shoe, and is washable to maintain cleanliness. .
A further object of the present invention is to provide an insole that prevents the sole from slipping both in the longitudinal direction and the width direction so that the sole does not move in the shoe when walking.

The present invention relates to an insole that is detachably mounted on an insole fixed to a shoe, the detachable insole is composed of a knitted fabric and a resin layer fused to the knitted fabric, and the resin layer is in the form of a sheet. The knitted fabric is a knitted fabric of a single knit structure in which front stitches and back stitches always exist on the same course and on the same wale, and one or more consecutive front stitches are convex. A detachable insole characterized by forming a part, one or more continuous back stitches forming a recess, and forming at least two protrusions per 2.54 cm per course, achieve the aforementioned objectives.

The knitted fabric preferably has 8 or less continuous front stitches and 8 or less continuous back stitches on the same course and on the same wale.
It is preferable that the protrusions formed by the front stitches are arranged in a checkered pattern or a herringbone pattern.
Moreover, it is preferable that the material of the knitted fabric has fibers having water absorption properties.

The thermoplastic elastomer is preferably a mesh sheet. In particular, the thermoplastic elastomer is preferably a styrene-based thermoplastic elastomer.

The detachable insole of the present invention is thin because it is composed only of a knitted fabric and a resin layer made of a thermoplastic elastomer fused thereto. Therefore, even if the insole of the present invention is mounted on an existing shoe-fixed insole and the shoe is worn, the wearer will not feel cramped.
Further, since the insole of the present invention is detachable from the shoes, the insole of the present invention can be removed and washed to keep the shoe clean. Moreover, since the knitted fabric and the thermoplastic elastomer are integrated by fusion bonding, the knitted fabric will not fray even if the peripheral edge portion of the insole is not sewn. Therefore, it can be washed repeatedly without worrying about fraying.
The detachable insole of the present invention is a knitted fabric with a single knit structure in which front stitches and back stitches always exist on the same course and on the same wale, and one or more consecutive front stitches are convex portions. , and one or more consecutive back stitches form recesses, and at least two protrusions are formed per 2.54 cm per course. It is slip resistant both in the direction (ie, the length direction of the insole) and in the lateral direction (ie, the width direction of the insole).
In particular, on the same course and on the same wale, the number of continuous front stitches and back stitches is 8 or less, and the protrusions formed by the front stitches are finely shaped like a checkered pattern or a herringbone pattern. When arranged, the knitted fabric does not shrink in one direction, and expansion and contraction of the knitted fabric is suppressed. A feeling of stickiness hardly occurs.
Furthermore, the thermoplastic elastomer has a strong frictional force against the insole fixed to the shoe, and the insole of the present invention does not move following the movement of the foot when the shoe wearer walks or puts on and takes off the shoe.

1 is a plan view of one embodiment of an insole of the present invention; FIG. Figure 2 is a cross-sectional view of the insole of the present invention along line A-A of Figure 1; FIG. 4 is a plan view showing another embodiment of the knitted fabric in the insole of the present invention; 1 is a plan view showing an example of a sheet-like thermoplastic elastomer in the insole of the present invention. FIG. 1 shows a knitting structure of a knitted fabric in an insole of the present invention and is an example of a checkered pattern. Fig. 10 shows the knitting structure of the knitted fabric in the insole of the present invention, showing another example of a checkered pattern. This is still another example of a checkered pattern, representing the knitting structure of the knitted fabric in the insole of the present invention. 1 shows the knitting structure of the knitted fabric in the insole of the present invention and is an example of a herringbone pattern. Fig. 10 shows the knitting structure of the knitted fabric in the insole of the present invention, and is another example of a herringbone pattern.

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in detail below based on embodiments shown in the drawings.
The insole according to the present invention has the shape of a normal insole as shown in FIG. is.

As shown in FIG. 2, the detachable insole of the present invention comprises a knitted fabric 1 and a resin layer 2 fused to the knitted fabric 1. The resin layer 2 is made of a sheet-like thermoplastic elastomer. is.

When the insole of the present invention is attached to an existing insole fixed to a shoe, it is attached so that the surface of the resin layer 2 is in contact with the existing insole and the surface of the knitted fabric 1 is in contact with the sole of the wearer's foot.

In the detachable insole of the present invention, the knitted fabric 1 is a knitted fabric with a single knit structure in which front stitches and back stitches always exist on the same course and on the same wale. In the knitted fabric 1, one or more continuous front stitches form a convex portion, and one or two or more continuous back stitches form a concave portion. At least two protrusions are formed per 2.54 cm (ie, per inch) per course.
The knitting structure of the knitted fabric 1 in the insole of the present invention will be described in detail. The number of continuous front stitches and back stitches on the same course and on the same wale is preferably 8 or less.
From the viewpoint of slip resistance, it is preferable that the protrusions are arranged in a checkered pattern or a herringbone pattern.

Examples of the knitting structure of the knitted fabric 1 in the insole of the present invention are shown in FIGS.
5 to 7 show front stitches and back stitches arranged in a checkered pattern, white squares being front stitches and black squares being back stitches.
In the knitting structure shown in FIG. 5 , one front stitch and one back stitch are alternately arranged in the course direction, and one front stitch and one back stitch are alternately arranged also in the wale direction. The convex portions are arranged in a checkered pattern.
In the knitting structure shown in FIG. 6, two continuous front stitches and two continuous back stitches are arranged in the course direction, and the second continuous front stitches and the second continuous back stitches are alternately arranged. there is Likewise, in the wale direction, two continuous front stitches and two continuous back stitches are alternately arranged. Convex portions are formed by four front stitches, each two stitches continuous in the course direction and the wale direction, and are arranged in a checkered pattern.
In the knitting structure shown in FIG. 7, four continuous front stitches and four continuous back stitches are arranged in the course direction, and the fourth continuous front stitches and the fourth continuous back stitches are alternately arranged. there is Likewise, in the wale direction, four continuous front stitches and four continuous back stitches are alternately arranged. Convex portions are formed by 16 front stitches arranged in a square with four consecutive stitches in the course direction and the wale direction, and the convex portions are arranged in a checkered pattern.
FIGS. 8 and 9 show a knitted structure in which front stitches and back stitches are arranged in a herringbone pattern.
In the one shown in FIG. 8, two continuous front stitches in the wale direction are arranged in a zigzag pattern with deviations for each course to form a herringbone pattern.
The one shown in FIG. 9 depicts a herringbone pattern in which three continuous front stitches in the wale direction are arranged in a zigzag pattern with deviation for each course.

Since a knitted fabric with only front stitches is prone to curling, it is difficult to handle when fusing with a sheet-like thermoplastic elastomer. The knitted fabric 1 has a single-knit structure in which stitches are always present, and since the knitted fabric 1 has good shape retention and does not curl, it is easy to handle when it is fused with a sheet-like thermoplastic elastomer.
In addition, the knitted fabric of the insole of the present invention has convex portions and concave portions formed by the front stitches and the back stitches, and particularly when the head is arranged in a checkered pattern or a herringbone pattern, the cushioning property is high.

The knitted fabric in the present invention can be knitted by a links-and-links knitting machine using double-headed needles, a links-jacquard knitting machine (two or three stitches), or a double cylinder knitting machine other than a rib-only machine. .

In the knitting of the knitted fabric, it is possible to make the thread to be used a color different from the color of the insole (often beige or brown) to which the shoe is fixed, or to apply a pattern 15 or pattern to the knitted fabric as shown in FIG. preferable. Since the color, pattern, and pattern of the insole of the present invention can be seen through the opening of the shoe when the shoe is removed, the aesthetic effect of the shoe as a whole can be improved. Since it is customary in Japan to take off shoes at the entrance, the insole of the present invention can be seen through the opening of the shoe, giving the shoe uniqueness. For example, even in a situation where many people take off their shoes (for example, at a memorial service), there is no possibility that someone else's shoes will be mistakenly worn or that someone else will wear your own shoes.
A soft material such as woolly nylon is preferable as the material of the knitted fabric 1 that contacts the sole of the wearer's foot.
Furthermore, it is also preferable that the knitted fabric has fibers having water absorption properties. For example, it is preferable to use yarns made of natural fibers, yarns blended with cotton fibers, etc. as knitting yarns. If the knitted fabric 1 contains water-absorbing fibers, it can absorb sweat from the soles of the feet, so that the insole of the present invention can reduce stickiness when wearing shoes.
For example, as knitting yarns, cotton yarn is used for the front yarn, and woolly nylon yarn is used for the back yarn, and plating knitting may be performed. Threads used are, for example, 30 count cotton thread (1 to 3 threads), 70 to 100 denier woolly nylon (2 threads), and the like.
In addition, it is also preferable to subject the knitted fabric 1 to an antibacterial treatment or a deodorant treatment before the knitted fabric 1 is fused to the resin layer 2 .

Since the resin layer 2 is a sheet-like thermoplastic elastomer, it has rubber-like elasticity and cushioning properties. Further, the thermoplastic elastomer has a high frictional force like rubber. Therefore, when the insole of the present invention is mounted on the insole fixed to the shoe, it is fixed to the insole fixed to the shoe without slipping.
When the insole of the present invention is worn, the sole of the foot is in contact with the knitted fabric 1 while the shoe is worn, but the resin layer 2 is in close contact with the existing insole fixed to the shoe, and slides during walking. there is nothing In addition, even when the shoe is taken off, the knitted fabric 1 does not remain attached to the sole, and the resin layer 2 is in close contact with the existing insole to which the shoe is fixed. The insole will not peel off and escape from the shoe.

The thermoplastic elastomer of the resin layer 2 is preferably a mesh sheet, for example, as shown in FIG. 4 (the mesh is schematically shown in FIG. 4). When fused to the knitted fabric 1, the mesh sheet is thinner than the non-mesh sheet, has air permeability, and has high cushioning properties. In addition, it is economical because less materials are used.
It is preferable that the thermoplastic elastomer of the resin layer 2 is a styrene-based thermoplastic elastomer. In particular, a styrene-based thermoplastic elastomer is soft and has properties similar to those of rubber.

Since the detachable insole of the present invention consists of the knitted fabric 1 and the resin layer 2 fused thereto, in the manufacturing process, the knitted fabric 1 and the resin layer 2 are sewn in the conventional manner to integrate them. There is no need for lining or piping around the perimeter. And, since the knitted fabric 1 and the resin layer 2 fused thereto are configured, the thickness of the insole of the present invention is 2 mm or less. Depending on the thickness of the knitted fabric 1 and the thickness of the resin layer 2, the thickness of the insole of the present invention is thinner than 1 mm or close to 1 mm. For example, if the thickness of the elastomer sheet that is the resin layer 2 is 0.23 mm before being crimped to the knitted fabric 1, it will be 0.12 to 0.2 mm after being crimped, and is manufactured by being fused with the knitted fabric 1. The insole becomes thinner than 1 mm.

When the insole of the present invention is used by overlapping it with the insole fixed to the shoe, the feeling of wearing is improved without causing the problem of tightness.
Furthermore, the insole of the present invention is produced by cutting a sheet in which the knitted fabric 1 and the resin layer 2 are integrated to fit the shape of the foot. , the knitted fabric 1 does not fray even when cut. Since the threads of the knitted fabric 1 are fixed by the fused resin layer 2, the knitted fabric 1 does not fray even after washing.
In addition, since the insole of the present invention is thin and flexible, it does not impair the unevenness of the insole for fixing the shoe.

1 knitted fabric 2 resin layer

Claims (8)

An insole detachably mounted on an insole fixed to a shoe, the detachable insole comprising a knitted fabric and a resin layer fused to the knitted fabric, the resin layer being a sheet-like thermoplastic elastomer The knitted fabric is a knitted fabric with a single knit structure in which front stitches and back stitches always exist on the same course and on the same wale, and one or more continuous front stitches form a convex portion. A detachable insole, characterized in that one or more continuous back stitches form recesses and at least two protrusions are formed per 2.54 cm per course. 2. The detachable insole according to claim 1, wherein the number of continuous front stitches and back stitches on the same course and on the same wale is 8 or less. 3. The detachable insole according to claim 2, wherein the protrusions formed by the front stitches are arranged in a checkered pattern. 3. The detachable insole according to claim 2, wherein the protrusions formed by the front stitches are arranged in a herringbone pattern. 3. The removable insole according to claim 2, wherein said thermoplastic elastomer is a mesh sheet. 2. The removable insole according to claim 1, wherein said thermoplastic elastomer is a styrenic thermoplastic elastomer. 2. The detachable insole according to claim 1, wherein the material of said knitted fabric comprises fibers having water absorption properties. 2. The removable insole according to claim 1, wherein said removable shoe insole has a thickness of 2 mm or less.

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