KR20230053338A - Non-slip sports socks - Google Patents

Abstract

The present invention relates to anti-slip sports socks, which solves the problems of conventional sports socks with an anti-slip function. An inner non-slip part for preventing slipping is formed with a film-based wet urethane sheet having a certain shape on an inner surface of the bottom of the sports socks. An outer non-slip part is formed with a fiber-based wet urethane sheet on an outer surface of the bottom of the sports socks. The area of the inner non-slip part is larger than the area of the outer non-slip part, and the ratio of the area of the inner non-slip part to the area of the outer non-slip part is 1.2 to 1.5: 1. Accordingly, the present invention can prevent the skin surface of the sole from slipping due to the relative difference in the kinetic friction coefficient of the inner non-slip part and the outer non-slip part even when the wearer sweats on the sole of the foot due to long-term exercise.

Description

Non-slip sports socks {Non-slip sports socks}

The present invention relates to sports socks having a large amount of activity for a long time, such as soccer, baseball, basketball, marathon, mountain climbing, etc., by attaching non-slip members to the inside and outside of the sports socks, respectively, to prevent slipping of the foot during sports activities and to reduce shock. It relates to an anti-slip sports sock that improves athletic performance by mitigating and prevents foot injury.

The foot is a body part that supports the body weight and maintains the balance of the body during various exercises, and is a place where numerous muscles and nerves are concentrated. In the case of a minor injury to the foot, even if the overall physical ability is sufficient, it becomes impossible to walk or run and exercise, so the foot must be managed very sensitively, and the sports socks worn on the foot must be designed according to the characteristics of the foot. do.

Textile materials applied to socks mainly use cotton, which is easy to absorb sweat, and synthetic fiber materials such as polyester and nylon are used in combination in consideration of strength and elasticity. In the case of sports activities with a foot, slippage may occur between the sole and the sock, or slippage may occur between the sports sock and the insole of the shoe.

In addition, slipping occurs between the feet and sports socks due to the force and weight of the foot every step when walking, and slipping occurs between sports socks and shoes, resulting in shock to the toes, and these shocks continuously occur while walking. will do

In particular, in the case of sports such as marathon, mountain climbing, and trail running where the same motion is repeated for a long time, the friction between the sole and the sock causes blisters or, worse, peeling of the skin, forcing you to give up the exercise. It is fatal because it takes a lot of time to recover.

This slippage occurs because the grip force is not sufficient because the frictional force between the skin of the sole and the sock is low. As such, sports socks lacking in grip can cause injuries to the ankle and knee.

In order to prevent injury due to the above slip phenomenon and improve athletic performance, the applicant of the present application is entitled "Non-slip socks for sports (Patent Document 1, Korean Registered Patent Publication No. 10-1686547)", "Non-slip feet with buffer spacers. Clothing (Patent Document 2 Korean Registered Patent Publication No. 10-2002633)", etc. have been applied for and registered.

However, as in the patent document, when the nonslip material is coated on the same point inside and outside the sock, when the nonslip material coated part is worn for a long time, the pressure is concentrated at the point where the sole and the nonslip material contact, and this pressure causes the wearer's Fatigue accumulates, and when severe, blisters and wounds occur.

In order to improve the problem of coating the non-slip material at the same point on the inside and outside of the sock, in Patent Document 2, the positions of the non-slip coating surface on the inner surface of the sock bottom and the no-slip coating surface on the outer surface of the sock sole are zigzag so that they do not overlap. Even so, the pressure given by the body weight is concentrated on the non-slip coating surface of the inner and outer surfaces, so that the surface structure of sports socks is easily collapsed, and the problem of the non-slip, where the load is concentrated, is separated from the socks or falls off increases. It became.

In addition, since there is not much difference between the frictional force between the inner side of the sock and the skin of the sole and the outer side of the sock and the insole of the shoe, when a large amount of sweat is discharged from the skin of the sole of the shoe during long-term exercise, the friction between the outer side of the sock and the insole of the shoe As this becomes relatively large, slip occurs between the sole skin surface and the inner surface of the sock, and consequently blisters or scars may occur on the sole skin.

Therefore, even when the inner nonslip and the outer nonslip are overlapped at the same position, the tenderness of the sole according to the thickness of the nonslip is reduced, and even when a large amount of sweat is discharged, the relative motion friction coefficient between the inner sock and the sole skin surface is increased. There is a need to develop anti-slip sports socks that can prevent slipping of the skin surface of the sole by keeping it higher than the outside.

Korean Registration No. 10-1686547 (2016. 12. 14 announcement) Korean Registration No. 10-2002633 (Announced on July 22, 2019)

The anti-slip sports socks of the present invention are intended to improve the problems of conventional sports socks having an anti-slip function, and form an inner non-slip portion for anti-slip with a film-based wet urethane sheet having a certain shape on the inner surface of the bottom of the sports socks , By forming an outer non-slip portion with a fiber-based wet polyurethane sheet on the outer surface of the bottom of the sports socks, the relative difference between the inner non-slip portion and the outer non-slip portion's kinetic friction coefficient makes the soles of the feet sweaty even when the wearer sweats on the soles of the feet due to prolonged exercise. I want to prevent the slip of the surface.

In addition, even when the nonslip inside the sock and the nonslip outside the sock overlap at the same position, the tenderness of the sole according to the thickness of the nonslip is reduced, and even when a large amount of sweat is discharged, the coefficient of relative motion friction between the inside of the sock and the skin surface of the sole is It is intended to develop anti-slip sports socks that can be kept higher to prevent slipping of the skin surface of the sole.

In order to solve the above problems, the non-slip sports socks of the present invention have an inner non-slip portion 20 in contact with the user's feet on the inner surface of the bottom of the socks in the non-slip sports socks 10 that surround the wearer's feet. An outer nonslip part 30 that contacts the insole of the user's shoe is formed on the outer surface of the sock sole, the inner nonslip part is formed of a film-based wet urethane sheet, and the outer nonslip part is a fiber-based wet type It is formed of a urethane sheet, the area of the inner non-slip part 20 is larger than the area of the outer non-slip part 30, and the ratio of the area of the inner non-slip part: the area of the outer non-slip part is 1.2 to 1.5: 1. .

The ratio of the coefficient of motion friction between the inner non-slip portion and the outer non-slip portion is 1: 0.5 to 0.8, the thickness of the inner non-slip portion is 100 to 200 μm, and the thickness of the outer non-slip portion is 300 to 500 μm. In addition, the fiber-based type of the outer non-slip part passes up and down when cells are formed by replacing DMF, and the size of the cells is large. When it is blocked by the PET film, it cannot pass up and down, and the DMF is substituted as it is, so the size of the cell is formed very small, but the small fine hole has a relatively large sucking pressure, so the friction coefficient of the inner non-slip is very large. can be said to be

In addition, the inner non-slip portion and the outer non-slip portion are characterized in that formed by applying a urethane solution on a substrate and then putting it into an aqueous solution.

In addition, the inner non-slip portion and the outer non-slip portion are characterized in that pores are formed while DMF of the urethane solution and water of the aqueous solution are replaced.

The micropore size of the inner nonslip portion is smaller than the micropore size of the outer nonslip portion. The micropore size of the inner non-slip portion is characterized in that 400 nm ~ 1000 nm.

The inner non-slip portion is disposed on the inner surface of the bottom of the sock, and is divided into a big toe portion corresponding to the position of the big toe, a heel portion corresponding to the position of the forefoot, and a heel portion corresponding to the position of the heel. It is characterized in that they are spaced apart at predetermined intervals.

The inner non-slip part of the big toe and the forefoot part are disposed horizontally at the end of the foot in the direction of the center, and the area of the two inner slip parts located at both ends to the outside of the foot is larger than the area of the other inner non-slip parts. .

In the inner non-slip portion disposed horizontally at the end of the forefoot in the direction of the center of the foot, it is characterized in that the space between the two inner non-slip portions located at both ends of the foot is empty.

Conventional non-slip socks have a thick non-slip material made of wet polyurethane, and a difference in frictional force due to the non-slip inner and outer sides of the sock occurs during use by the wearer, causing tenderness or foreign body sensation on the skin surface of the sole of the foot. However, the present invention According to one embodiment of the method, the coefficient of friction between the outer and inner surfaces of the sock is different, and in the area where the foot actually touches and transmits force, the difference in cell size in the manufacturing process of wet urethane is used to wet the inner surface. The area where the foot touches the urethane is larger than the area of the outer surface to maximize the anti-slip effect, allowing exercisers to feel a stable grip.

In addition, according to one embodiment of the present invention, since the inner non-slip portion is manufactured by applying a wet urethane using a PET film substrate rather than a fiber or non-woven fabric substrate used in conventional wet urethane, the pore size is small (compared to the existing inner non-slip portion) While the pore size is 10 μm to 200 μm, the pore size of the non-slip film type non-slip part of the present invention is 400 nm to 1000 nm.) By applying a non-slip material to increase the difference in friction coefficient, more stable gripping can be secured .

In addition, even when the nonslip on the inside and the nonslip on the outside overlap at the same position, the thickness of the nonslip is changed (thickness of the outer nonslip material 300㎛ ~ 500㎛, thickness of the inner film base type nonslip material 100㎛ ~ 200㎛) sole It is possible to prevent slipping of the skin surface of the sole by reducing tenderness and maintaining a relative coefficient of motion friction between the inside of the sock and the skin surface of the sole to be higher than that of the outside even when a large amount of sweat is discharged.

According to one embodiment of the present invention, a film-based wet urethane sheet is applied to the inner non-slip portion of the sports sock, and a fiber-based wet polyurethane sheet is applied to the outer non-slip portion, thereby increasing the difference in kinetic friction between the inner and outer sides of the sports sock, thereby increasing the wearer's Even when the wig sweats a lot, the friction between the sole of the foot and the inside of the sock increases, so it is possible to prevent slipping and blisters or scars on the skin.

Forming the inner non-slip part of sports socks with a film-based wet polyurethane sheet minimizes the thickness of the inner non-slip part while enhancing the effect of mitigating shock caused by exercise, and evenly distributing body pressure throughout the sole to relieve tenderness in a specific part of the sole. It can be prevented.

In addition, according to one embodiment of the present invention, the area of the inner non-slip part is larger than the area of the outer non-slip part, and the ratio of the area of the inner non-slip part: the area of the outer non-slip part is adjusted to satisfy 1.2 to 1.5: 1, so that the inner non-slip part is The frictional force of can be greater than the frictional force of the outer non-slip, so slipping of the sock and the skin surface of the foot on the inside of the sports socks can be prevented.

In addition, according to one embodiment of the present invention, the ratio of the coefficient of motion friction between the inner nonslip part and the outer nonslip part is 1: 0.5 to 0.8, the thickness of the inner nonslip part is 100 to 200 μm, and the thickness of the outer nonslip part is 300 to 500 μm. Since it is characterized in that it is ㎛, the frictional force of the inner nonslip can be greater than the frictional force of the outer nonslip, so that the slip of the sock and the skin surface of the foot can be prevented on the inside of the sports socks.

In addition, according to one embodiment of the present invention, since the micropore size of the inner non-slip portion is smaller than the micropore size of the outer non-slip portion and the number of pores is very large compared to the same area, the suction pressure is large and the number of pores is large, so that the repetition It can absorb sweat generated from the skin of the feet more efficiently during exercise.

In addition, according to one embodiment of the present invention, a plurality of inner non-slip parts are disposed on the inner surface of the sock sole, and the toe part corresponding to the position of the big toe, the toe part corresponding to the position of the forefoot, and the heel part corresponding to the position of the big toe It is divided into a heel part, and since the big toe part and the forefoot part are spaced apart at a predetermined interval, stickiness can be prevented when sweat occurs on the feet. The distance between the big toe and the forefoot is not particularly limited, and may be, for example, about 6 mm.

In addition, according to one embodiment of the present invention, the area of the inner non-slip portion of the big toe and the forefoot portion are disposed horizontally at the ends in the center direction of the foot, and the area of the two inner slip portions located at both ends to the outside of the foot is the other inner non-slip portion. By having a larger area than the negative area, the anti-slip effect of the sports socks may be more excellent. That is, among the inner non-slip parts, the position of the big toe and the inner non-slip part horizontally disposed at the end of the forefoot in the direction of the center of the foot, and the position of the two inner slip parts located at both ends to the outside of the foot are important, because these parts become the power point. .

Specifically, when running, the outer surface of the sole lands first, then moves the center to the inner surface of the sole, and then moves forward while pushing with the big toe, so that the inner non-slip part of the big toe and the forefoot Among the parts, the area of the two inner slip parts disposed horizontally at the ends in the direction of the center of the foot and located at both ends to the outside of the foot has a larger area than the area of the other inner non-slip parts, so that the slip prevention effect of sports socks can be more excellent. .

In addition, in the inner non-slip part horizontally disposed at the end of the forefoot in the direction of the center of the foot, the two inner non-slip parts positioned at both ends outside the foot are empty, so that the fit can be excellent. That is, in the inner non-slip part horizontally disposed at the end of the forefoot in the direction of the center of the foot, the position between the two inner non-slip parts located at both ends to the outside of the foot corresponds to Yongcheonhyeol (concave part), and the non-slip part is located at this position. If it is attached, it can be excellent in wearing comfort by blocking it because the wearing feeling is reduced due to repeated attachment and falling off of the sole surface during exercise.

In order to form the outer non-slip part of the sports socks with textile-based wet polyurethane, various patterns, patterns, and characters are attached to the bottom of the socks by thermal transfer to give an aesthetic element to the exterior of the socks, making it easy to manufacture high value-added sports socks. do.

1 is a side cross-sectional view of a conventional non-slip socks attached.
2 is a cross-sectional view of the bottom of a conventional non-slip sock.
Figure 3 is a cross-sectional view of the bottom of the non-slip sports sock according to the present invention.
4 is a scanning electron microscope (SEM) photograph of the inner non-slip portion of the anti-slip sports sock according to the present invention.
5 is a scanning electron microscope (SEM) photograph of the outer non-slip portion of the non-slip sports sock according to the present invention.
6 is a schematic plan view of a big toe and a forefoot for showing a shape in which an inner non-slip portion and an outer non-slip portion of an anti-slip sports sock overlap each other according to the present invention.
7 is a schematic plane view of the heel part for showing the overlapping shape of the inner non-slip part and the outer non-slip part of the non-slip sports sock according to the present invention.
8 is a photograph schematically showing the outer non-slip portion of the non-slip sports sock according to the present invention.
9 is a photograph schematically showing the inner non-slip portion of the non-slip sports sock according to the present invention.
10 is a graph showing the slope test results of the non-slip sports socks according to the present invention.

Hereinafter, the present invention will be described in more detail through Examples and Experimental Examples. However, these examples are only for helping the understanding of the present invention, and the scope of the present invention is not limited to these examples in any sense.

In the non-slip sports sock 10 of the present invention, an inner non-slip portion 20 in contact with the user's feet is formed on the inner surface of the sock sole, and the outer surface in contact with the insole of the user's shoe is formed on the outer surface of the sock sole. A non-slip portion 30 is formed, the inner non-slip portion 20 is formed of a wet urethane sheet, and the outer non-slip portion 30 is formed of a foamed polyurethane sheet. will be.

As can be seen in FIGS. 1 and 2, the conventional non-slip socks have a non-slip portion 20 formed on the inside of the bottom of the sock 10, and at the same time, a separate non-slip portion 30 is formed on the outside of the bottom of the sock. . The non-slip portion is formed by cutting a sheet of wet polyurethane material into a shape of a certain pattern, and is formed by thermal compression bonding to the knitted fabric of socks using an adhesive or a hot melt (21 or 31).

The non-slip parts 20 and 30 attached in this way use wet polyurethane sheets and are formed to a thickness of 300 to 500 μm in order to perform non-slip and shock absorbing functions. When including the thickness of the nonslip attached to the inside and outside of the sock along with the thickness of the sock, the overall thickness becomes considerably thicker. The non-slip contact surface of the product may be blistered or scratched.

To prevent this, as shown in FIG. 2, a method of positioning the sock inner nonslip part 20 and the sock outer nonslip part 30 so as not to overlap with each other based on the side end surface of the sock has been proposed. However, in the case of preventing the overlapping of the non-slip parts in this way, the non-slip surface is deformed while being pressed up and down based on the cross section of the sock by the pressure of the weight, so that the function of the non-slip is rather deteriorated.

In addition, when performing intense exercise while wearing for a long time, a large amount of sweat is discharged from the user's feet on the inner side of the sock, and this moisture is not completely discharged to the outside of the sock and remains on the surface of the non-slip, compared to the outer sock. As the kinetic frictional force on the inside of the sock is relatively reduced, a problem arises in that the slip on the skin surface of the sole of the foot is increased.

Figure 3 is a cross-sectional view of the bottom of the non-slip sports sock according to the present invention.

Referring to FIG. 3 , in one embodiment of the present invention, the non-slip portion 20 inside the sock has a total thickness in the range of 100 to 200 μm. If the thickness of the inner non-slip portion 20 exceeds 200 μm, the total thickness of the bottom of the sports sock may become thick, increasing tenderness at the contact surface of the sole skin and causing blisters. function deteriorates.

According to one embodiment of the present invention, by forming the thickness of the inner non-slip portion 20 of the sports sock in the range of 100 to 200 μm, the overall thickness of the sports sock can be thinned, so that the inner and outer non-slip portions like the prior art The problem caused by the thick thickness can be solved.

In particular, in one embodiment of the present invention, the thickness of the inner non-slip portion 20 of the sports sock can be manufactured to 100 μm, so the thickness of the inner non-slip portion 20 of the sports sock can be formed thinner than before. Due to this, it is possible to solve the problem caused by the problem of the thick thickness of the inner non-slip portion 20 of the conventional sports socks. In other words, it is possible to solve the problem of blisters or scars on the non-slip contact surface of the sole because the load by weight is concentrated on the skin surface of the sole of the foot. This can prevent blisters and cuts.

In addition, according to one embodiment of the present invention, since the overall thickness of the sports socks can be reduced, the inner non-slip portion 20 and the outer non-slip portion 30 can be formed to overlap each other based on the side cross-section of the sock. There is, as in the prior art, it is possible to solve the above-described problem by positioning the inner non-slip portion and the outer non-slip portion so as not to overlap with each other based on the side end surface of the sock. That is, when the overlapping of the non-slip parts is prevented, the non-slip surface is deformed while being pressed up and down based on the cross section of the sock by the pressure of the body weight, so it is possible to solve the problem of deterioration of the non-slip function.

In one embodiment of the present invention, the outer non-slip portion 30 of sports socks is formed with a thickness of 300 to 500 μm using a fiber-based wet polyurethane sheet, and free patterns, patterns, characters, and images are formed on the outer surface of the bottom of sports socks. Formed by thermal transfer method. The outer non-slip portion 30 formed at this time is not limited to the location of the inner non-slip portion, and may be formed at a position overlapping with the inner non-slip portion. Therefore, when the thickness of the outer non-slip portion 30 exceeds 500 μm, the overall thickness of the sports sock bottom may be increased, so the thickness of the outer non-slip portion 30 is formed to be 500 μm or less. On the other hand, while minimizing the thickness of the outer non-slip portion 30, it is desirable to exert high kinetic frictional force. However, if the thickness of the outer non-slip portion is 300 μm or less, it is difficult to firmly attach to the sock tissue and has non-slip and shock absorption functions. this is lowered

According to one embodiment of the present invention, the area of the inner non-slip portion 20 is larger than the area of the outer non-slip portion 30, and the ratio of the area of the inner non-slip portion: the area of the outer non-slip portion is 1.2 to 1.5: 1 to be characterized

The area of the inner non-slip portion 20 is larger than the area of the outer non-slip portion 30, and the ratio of the area of the inner non-slip portion: the area of the outer non-slip portion is adjusted to satisfy 1.2 to 1.5: 1, so that the frictional force of the inner non-slip portion increases. It can be greater than the frictional force of the outer non-slip, so slipping of the sock and the skin surface of the foot on the inside of the sports sock can be prevented.

In particular, in one embodiment of the present invention, since the ratio of the area of the inner non-slip portion to the area of the outer non-slip portion is 30:21, the frictional force of the inner non-slip portion may be greater than the frictional force of the outer non-slip portion, which may occur on the inside of the sports sock. Possible slippage can be prevented sufficiently.

In addition, according to one embodiment of the present invention, the ratio of the coefficient of motion friction between the inner non-slip portion and the outer non-slip portion is 1: 0.5 to 0.8. The reason for the difference in the coefficient of motion friction is that when the wearer performs intense exercise while wearing sports socks for a long time, the sweat discharged from the skin of the feet remains without being completely discharged to the outside of the socks, and the inner non-slip portion 20 and It reduces the kinetic friction coefficient of the skin surface of the sole of the wearer's foot. In this way, even when the motion friction coefficient of the inner non-slip part 20 is reduced by the moisture of sweat, the inner non-slip part 20 has a greater kinetic friction coefficient than the outer non-slip part 30, so the slip phenomenon of the sole can be suppressed. is to make it possible

In particular, in one embodiment of the present invention, by setting the ratio of the kinetic friction coefficient of the inner non-slip portion and the outer non-slip portion to 1: 0.5 to 0.8, the ratio of frictional force is, for example, the inner non-slip portion: the outer non-slip portion adjusted to 9: 2. Therefore, the effect of suppressing the slip phenomenon of the sole can be excellent.

That is, the ratio of the coefficient of motion friction between the inner non-slip portion and the outer non-slip portion is 1: 0.5 to 0.8, the thickness of the inner non-slip portion is 100 to 200 μm, and the thickness of the outer non-slip portion is 300 to 500 μm. Frictional force of the nonslip can be greater than frictional force of the outer nonslip, so slipping of the sock and the skin surface of the foot on the inside of the sports sock can be prevented.

4 is a scanning electron microscope (SEM) photograph of the inner non-slip portion of the anti-slip sports sock according to the present invention.

5 is a scanning electron microscope (SEM) photograph of the outer non-slip portion of the non-slip sports sock according to the present invention.

4 and 5, in the non-slip sports sock according to an embodiment of the present invention, the micropore size of the inner nonslip portion is smaller than the micropore size of the outer nonslip portion. Since the micropore size of the inner nonslip portion is smaller than the micropore size of the outer nonslip portion, the friction coefficient of the inner nonslip portion can be formed to be very large during repetitive motion. In addition, since the micropore size of the inner non-slip portion is smaller than the micropore size of the outer non-slip portion and the number of pores is very large compared to the same area, the suction pressure is large and the number of pores is large, so that sweat generated from the skin of the feet during repetitive exercise is reduced. can be absorbed more efficiently. Due to this, it is possible to prevent the coefficient of motion friction of the inner non-slip portion 20 from being reduced due to moisture in sweat, and thus, it is possible to suppress the slip phenomenon of the sole.

Conventional non-slip socks have a thick non-slip material made of wet polyurethane, and a difference in frictional force due to the non-slip inner and outer sides of the sock occurs during use by the wearer, causing tenderness or foreign body sensation on the skin surface of the sole of the foot. However, the present invention According to one embodiment of the method, the coefficient of friction between the outer and inner surfaces of the sock is different, and in the area where the foot actually touches and transmits force, the difference in cell size in the manufacturing process of wet urethane is used to wet the inner surface. The area where the foot touches the urethane is larger than the area of the outer surface to maximize the anti-slip effect, allowing exercisers to feel a stable grip.

In addition, according to one embodiment of the present invention, since the inner non-slip portion is manufactured by applying a wet urethane using a PET film substrate rather than a fiber or non-woven fabric substrate used in conventional wet urethane, the pore size is small (compared to the existing inner non-slip portion) While the pore size is 10 μm to 200 μm, the pore size of the non-slip film type non-slip part of the present invention is 400 nm to 1000 nm.) By applying a non-slip material to increase the difference in friction coefficient, more stable gripping can be secured .

That is, according to one embodiment of the present invention, as shown in FIG. 4, the micropore size of the inner non-slip portion is characterized in that 400 nm to 1000 nm.

In addition, even when the nonslip on the inside and the nonslip on the outside overlap at the same position, the thickness of the nonslip is changed (thickness of the outer nonslip material 300㎛ ~ 500㎛, thickness of the inner film base type nonslip material 100㎛ ~ 200㎛) sole It is possible to prevent slipping of the skin surface of the sole by reducing tenderness and maintaining a relative coefficient of motion friction between the inside of the sock and the skin surface of the sole to be higher than that of the outside even when a large amount of sweat is discharged.

According to one embodiment of the present invention, a film-based wet urethane sheet is applied to the inner non-slip portion of the sports sock, and a fiber-based wet polyurethane sheet is applied to the outer non-slip portion, thereby increasing the difference in kinetic friction between the inner and outer sides of the sports sock, thereby increasing the wearer's Even when the wig sweats a lot, the friction between the sole of the foot and the inside of the sock increases, so it is possible to prevent slipping and blisters or scars on the skin.

Forming the inner non-slip part of sports socks with a film-based wet polyurethane sheet minimizes the thickness of the inner non-slip part while enhancing the effect of mitigating shock caused by exercise, and evenly distributing body pressure throughout the sole to relieve tenderness in a specific part of the sole. It can be prevented.

According to one embodiment of the present invention, the inner non-slip part 20 and the outer non-slip part 30 are characterized in that they are formed by applying a urethane solution on a substrate and then putting it into an aqueous solution.

In addition, the inner non-slip portion 20 and the outer non-slip portion 30 are characterized in that pores are formed while DMF of the urethane solution and water of the aqueous solution are substituted.

Since the inner non-slip part uses wet urethane using a PET film substrate rather than a fiber or nonwoven fabric substrate used in conventional wet urethane, it can be implemented in a form with a small pore size, thereby increasing the friction coefficient to secure more stable grip can

That is, the fiber-based type of the outer non-slip part passes up and down when cells are formed by replacing DMF, and the size of the cell is large, whereas in the case of the film-based wet urethane of the inner non-slip part, DMF is substituted in the water tank to form cells When it is blocked by the PET film, it cannot pass up and down, and DMF is substituted as it is, so the size of the cell is formed very small, but the small micropores have a relatively high suction pressure, so the friction coefficient of the inner non-slip is very large. can be said to be formed.

The inner non-slip part and the outer non-slip part manufactured by the above process are in the form of wet polyurethane sheets, and by attaching them to the outside and inside of the socks, respectively, anti-slip sports socks according to one embodiment of the present invention can be manufactured.

6 is a schematic plan view of a big toe and a forefoot for showing a shape in which an inner non-slip portion and an outer non-slip portion of an anti-slip sports sock overlap each other according to the present invention.

7 is a schematic plane view of the heel part for showing the overlapping shape of the inner non-slip part and the outer non-slip part of the non-slip sports sock according to the present invention.

6 and 7, the size and total area of each of the black circular inner non-slip parts are larger than the size and area of each of the black ribbon-shaped outer non-slip parts. In this way, the area of the inner non-slip portion 20 is larger than the area of the outer non-slip portion 30, and the ratio of the area of the inner non-slip portion: the area of the outer non-slip portion is adjusted to satisfy 1.2 to 1.5: 1, so that the inner non-slip The frictional force can be greater than the frictional force of the outer nonslip, so that slipping of the sock with the skin surface of the foot on the inside of the sports sock can be prevented.

In addition, according to one embodiment of the present invention, a plurality of inner non-slip parts 20 are disposed on the inner surface of the sock sole, and the big toe part 20a corresponding to the position of the big toe and the forefoot corresponding to the position of the forefoot It is divided into a part 20b and a heel part 20c corresponding to the position of the heel, and the big toe part 20a and the front heel part 20b are spaced apart at a predetermined interval. Due to this, it is possible to prevent stickiness when sweating occurs on the feet. The distance between the big toe part 20a and the forefoot part 20b is not particularly limited, and may have, for example, about 6 mm.

In addition, according to one embodiment of the present invention, the inner non-slip part of the big toe part 20a and the forefoot part 20b are disposed horizontally at the ends in the center direction of the foot, and the two inner slips are located at both ends outside the foot. The area of the portion is characterized in that it has a larger area than the area of the other inner non-slip portion. Due to this, the anti-slip effect of sports socks may be more excellent.

That is, among the inner non-slip parts, the position of the big toe and the inner non-slip part horizontally disposed at the end of the forefoot in the direction of the center of the foot, and the position of the two inner slip parts located at both ends to the outside of the foot are important, because these parts become the power point. .

Specifically, when running, the outer surface of the sole lands first, then moves the center of gravity to the inner surface of the sole, and then moves forward while pushing with the big toe, so that the inner side of the big toe 20a is non-slip. and the forefoot portion 20b, the area of the two inner slip parts disposed horizontally at the end of the foot in the direction of the center and located at both ends outside the foot has a larger area than the area of the other inner non-slip part, thereby preventing slipping of sports socks. The effect may be better.

In addition, in the inner non-slip portion horizontally disposed at the end of the forefoot portion 20b in the direction of the center of the foot, the two inner non-slip portions positioned at both ends outside the foot are empty, so that the fit can be excellent. That is, in the inner non-slip part horizontally disposed at the end of the forefoot part 20b in the direction of the center of the foot, the position between the two inner non-slip parts located at both ends of the foot is a position corresponding to Yongcheonhyeol (concave part), and this position When the non-slip part is attached to the foot sole surface during exercise, and falling off repeatedly, the wearing feeling is reduced, so it can be prevented and the wearing feeling can be excellent.

8 is a photograph schematically showing the outer non-slip portion of the non-slip sports sock according to the present invention.

9 is a photograph schematically showing the inner non-slip portion of the non-slip sports sock according to the present invention.

Referring to FIGS. 8 and 9 , the outer non-slip portion of the non-slip sports socks according to an embodiment of the present invention is not limited in shape or color, but may be a black ribbon shape as shown in FIG. 8 . In addition, the inner non-slip portion is also not limited in shape or color, but may have a black circular shape as shown in FIG. 9 .

Hereinafter, the present invention will be described in more detail through Examples and Experimental Examples. However, these examples are only for helping the understanding of the present invention, and the scope of the present invention is not limited to these examples in any sense.

An embodiment of the present invention is an In-Out Nonslip Socks (IOS) including a double-sided non-slip portion according to an embodiment of the present invention, and a comparative example uses a conventional sports sock (NS) for functional characteristics. compared.

In the present study, 15 males in their 20s (age 23.73±2.1 yrs., height 174.1±2.6cm, weight 71.6±7.9kg, foot size 265mm) with a healthy right foot without musculoskeletal disease were selected and the foot size was 265mm. A 3D motion analysis was conducted using a treadmill equipped with a reaction force (Instrumented treadmill, Bertec, USA), 8 infrared cameras (Oqus 300, Qualisys, Sweeden), and 16-channel EMG (Noraxon EMG Ultium EPS, USA). The analysis of treadmill running and cutting maneuvers was conducted. The data sampling rate of each equipment was 1,000 Hz, 100 Hz, and 1,000 Hz, respectively.

The present invention was to conduct a biomechanical evaluation of the functionality of IOS (Example), and compare the functional characteristics of IOS (Example) to NS (Comparative Example) commercially available in Korea in terms of muscle efficiency and slippage of socks. evaluated.

First, in the 30-minute running protocol, both socks showed a statistically significant increase in vertical ground reaction force over time. However, the muscle activity of the calf muscle and the calf muscle that led such running were maintained at about 57% and 9%, respectively, compared to the start after 30 minutes in the case of NS (Comparative Example), whereas in the case of IOS (Example), each 72% , 27% was maintained. This result is thought to be due to the fact that in the case of IOS (Example), the sock made the frictional force with the shoe high so that the magnitude of the ground reaction force pressing the ground was kept constant while minimizing the force used by the agonist to stabilize the foot during running.

Therefore, in view of the amount of muscle strength maintained after 30 minutes, IOS (Example) is considered to have less fatigue accumulation than NS (Comparative Example). In the present invention, the direction change motion was used as a protocol to evaluate the degree of slippage of socks in the shoe. In other words, the test was carried out with the hypothesis that if the socks have little slippage with the shoes, the power can be efficiently transmitted to the shoes when performing a direction change operation, ultimately causing a large movement. Finally, the fit of the sock in both the 30-minute running and direction change protocols showed that IOS (Example) was significantly better than NS (Comparative Example).

In particular, it showed the highest value for friction, and contrary to expectations, the answer was derived that they felt comfortable without feeling foreign body on the pad.

1. Assessment of muscle efficiency

go. biomechanical test

As a result of biomechanically evaluating the effect of socks over time (0-30 mins) during treadmill running, the GRFz value after treadmill running was statistically significant when NS (Comparative Example) and IOS (Example) were worn. increased (Table 1; p<.05). However, there was no difference in the value of GRFz according to the type of socks.

In the case of muscle efficiency, when IOS (Example) was worn after treadmill running, there was a statistically significant increase in the calf muscle and long calf muscle compared to the case where NS (Comparative Example) was worn (Table 2; p<.05) .

When IOS (Example) was worn during treadmill running compared to NS (Comparative Example), the vertical ground reaction force significantly increased over time.

When IOS (Example) was worn during treadmill running compared to NS (Comparative Example), muscle efficiency increased by about 15% over time. That is, when wearing the IOS of the embodiment, since the muscles can be efficiently used during long-distance running, muscle fatigue can be reduced, or there is an effect of reducing muscle fatigue.

me. fit check

As a result of measuring the wearing comfort of IOS (Example) during running, IOS (Example) showed a comprehensive 59±24% improved wearing comfort compared to NS (Comparative Example), and in particular, the highest friction (80±22%) figures were shown.

2. Evaluation of slippage of socks

go. biomechanical test

As a result of biomechanically evaluating the effect of socks according to the direction and difficulty of movement when changing direction, M/ The value of L GRFx (medial lateral ground reaction force, Fx) increased statistically significantly when IOS (Example) was worn than when NS (Comparative Example) was worn (Table 3; p<.05).

In addition, as the difficulty of the change of direction increases, the value of the ankle joint moment, which actually interacts with the ground and affects the change of direction of the body, is higher than when wearing NS (Comparative Example). Example), the inversion moment at 30° and the plantar flexion moment and inversion moment at 60° increased statistically significantly (Tables 3 and 4; p<.05).

When changing direction, the ankle joint moment value increased by about 20% when IOS (Example) was worn compared to NS (Comparative Example).

When IOS (Example) was worn compared to NS (Comparative Example) when changing direction, M/L (force pushing left and right against body weight), Plant.Flex.moment (rotational force pushing the ankle forward), Inver. Moment (lateral pushing force) increased by 8%, 5%, and 19%, respectively.

me. fit check

As a result of measuring the wearing comfort of IOS (Example) when changing direction, the IOS (Example) showed a comprehensive 62±26% improved wearing comfort compared to NS (Comparative Example), especially the front axle grip (71±28%) , showed very high values for heel grip (62±29%) and friction (77±28%).

According to the results of this test, it was confirmed that the vertical ground reaction force (GRFz) increased when running for a long time regardless of the type of socks. This is because when fatigue is accumulated due to long-term running (more than 30 minutes), both NS (Comparative Example) and IOS (Example) socks do not properly absorb shock when supporting the ground when worn, so it can be judged that this phenomenon occurs. can

However, despite the fact that there was no difference in GRFz according to the type of sock, it was confirmed that the muscle efficiency of the calf muscle and long calf muscle increased significantly when wearing IOS (Example) compared to when wearing NS (Comparative Example). . This means that wearing the IOS (Example) can demonstrate better muscle efficiency with a relatively small amount of muscle activity, even though both socks showed the same performance during long running. In addition, in the frictional force with the shoe, one of the important functions of socks, IOS (Example) showed a higher value (80 ± 22%) than NS (Comparative Example) and was evaluated to sufficiently prevent slippage. Such a result is determined to be a basis that the IOS (Example) can provide various effects to the user, such as elasticity, breathability, comfort and grip, along with excellent biomechanical efficiency.

In addition, according to the results of this test, as the difficulty of motion increases when changing direction (30° → 60°), wearing the IOS causes rotation and propulsion of the body to change M/L GRFx , plantar flexion moment, and inversion moment were confirmed to increase. This suggests that the IOS (Example) can play a positive role in various sports activities as well as ball games such as soccer, basketball, and baseball that perform intense motions.

Therefore, it is expected that wearing the IOS (Example) will have a more pronounced effect in sports events that perform intense and dynamic motions than sports events that perform static motions. In addition, it was found that the most important fit in wearing socks was noticeably superior in the case of IOS (Example) than NS (Comparative Example). These results are considered to be grounds for the IOS (Example) to provide users with various effects such as elasticity, durability, breathability, comfort and grip along with biomechanical functional excellence.

In addition, a slope test was conducted to evaluate the non-slip performance of the anti-slip sports socks according to an embodiment of the present invention.

The ramp test is a test for deriving the friction coefficient of the internal/external friction surface of the sock by determining the angle at which the comparison target can climb without slipping.

In this test, 1) Sock inner friction surface test- non-slip performance evaluation test between sock lining and skin, last structure: artificial leather, platform: sock lining attached, 2) sock outer friction surface test- non-slip performance evaluation test between sock outer material and insole , Last structure: sock outer material, platform: insole attached, and 3) sock comprehensive friction surface test - non-slip performance evaluation test between sock and insole while wearing socks, last structure: sock worn, platform: insole attached.

As for the specific test method, after attaching the last structure wearing the material required for each test to the ramp, the slope was gradually increased at a speed of 0.62°/s. The occurrence of slipping was defined as the moment when a horizontal displacement of 2 cm was captured, and the angle at the time of slipping more than 2 cm was captured through a 30 fps high-speed camera (attaching a 2 cm thick tape and positioning the camera in front of the tape).

Strong lighting was used to match the exposure of the high-speed camera, adhesion of the material was checked for each measurement, dust or threads on the rubbing surface were removed, and socks were worn to return to their original position when slippage occurred. So that every measurement was the same.

For this test, referring to the KIFLT TM 03 standard test procedure, after a total of 7 repeated measurements, 5 data excluding the highest and lowest angles were used.

Table 5 below shows the ramp test results.

10 is a graph showing the slope test results of the non-slip sports socks according to the present invention.

Referring to [Table 1] and FIG. 10, when the non-slip performance is ranked in the order of excellence as a result of the comprehensive friction surface inspection,

1. US-urethane non-slip pad socks (an embodiment of the present invention)

2. SS-O- Socks with silicone non-slip pad outer fabric

3. SS-I-Socks with silicone non-slip pad lining

4. NS-Plain Socks

5. ST-Stockings

appeared in sequence.

As a result of a comprehensive review, the external friction coefficient that was similar to the overall friction coefficient result among the internal and external friction coefficients seems to have had a greater impact on the overall non-slip function. In addition, the higher the internal friction coefficient, the smaller the difference between the external friction coefficient and the overall friction coefficient, which seems to require statistical analysis. In addition, as a result of the inclination test, it can be seen that the non-slip performance of the anti-slip sports socks according to an embodiment of the present invention is the best.

The present invention described above is not limited to the above-described embodiments, since various substitutions and changes can be made to those skilled in the art within the scope of the technical idea of the present invention. .

10: sports socks 20: inner non-slip part
30: outer non-slip part

Claims (8)

In the anti-skid sports socks,
An inner non-slip portion in contact with the user's foot is formed on the inner surface of the sock bottom,
An outer non-slip portion contacting the insole of the user's shoe is formed on the outer surface of the sock bottom,
The inner non-slip part is formed of a film-based wet urethane sheet, and the outer non-slip part is formed of a fiber-based wet urethane sheet,
The area of the inner non-slip portion is larger than the area of the outer non-slip portion, and the ratio of the area of the inner non-slip portion to the area of the outer non-slip portion is 1.2 to 1.5: 1. According to claim 1,
The ratio of the coefficient of motion friction between the inner non-slip portion and the outer non-slip portion is 1: 0.5 to 0.8, the thickness of the inner non-slip portion is 100 to 200 μm, and the thickness of the outer non-slip portion is 300 to 500 μm. Sports socks for non-slip, characterized in that. According to claim 1,
The inner non-slip portion and the outer non-slip portion are anti-slip sports socks, characterized in that formed by applying a urethane solution on a substrate and then putting it into an aqueous solution. According to claim 3,
The inner non-slip portion and the outer non-slip portion are non-slip sports socks, characterized in that pores are formed as DMF of the urethane solution and water of the aqueous solution are replaced. According to claim 4,
Anti-skid sports socks, characterized in that the micropore size of the inner non-slip portion is smaller than the micropore size of the outer non-slip portion. According to claim 1,
The inner non-slip portion is disposed on the inner surface of the bottom of the sock, and is divided into a big toe portion corresponding to the position of the big toe, a heel portion corresponding to the position of the forefoot, and a heel portion corresponding to the position of the heel. Anti-skid sports socks, characterized in that spaced apart at predetermined intervals. According to claim 6,
In the inner non-slip portion,
The inner non-slip part of the big toe and the forefoot part are disposed horizontally at the end of the foot in the direction of the center, and the area of the two inner slip parts located at both ends to the outside of the foot is larger than the area of the other inner non-slip part. Characterized in that Non-slip sports socks. According to claim 7,
In the inner non-slip portion horizontally disposed at the end of the foot in the center direction of the forefoot portion, an anti-slip sports sock, characterized in that the space between the two inner non-slip portions located at both ends outside the foot is empty.

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