JPH1161506A - Socks - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a sock to be worn for absorbing shocks to a knee or waist on walking or the like by holding a shock-absorbing sheet for absorbing the shocks due to loads in a worn state in the sole contact portion of the sock. SOLUTION: This sock 10 is obtained by holding a shock-absorbing sheet 15, such as a silicone rubber, for absorbing shocks due to loads in a worn state in the sole contact portion of the sock. The shock-absorbing sheet 15 is preferably held on the innermost side surface of the sock 10, and the sole contact surface of the sheet 15 is preferably covered with a cloth-like member. The sheet 15 is preferably covered with elastic films 13a, 13b.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sock, and more particularly, to a sock worn to reduce an impact on a knee or a waist when walking.

[0002]

2. Description of the Related Art Hitherto, shoes having various shock absorbing effects have been developed in order to reduce impacts on knees and waist when walking. For example, the sole has a thick rubber sole, or the sole has an air layer. Also,
Insoles and the like for adding cushioning properties have also been developed.

[0003] However, there is a problem in that the above-mentioned shoes or insole has a shock absorbing effect limited only when such shoes or insole are used. In real life, in addition to cooking at home, there are many jobs that burden the knees and hips during general housework, and it is expected to have a shock-reducing effect, but in a room without shoes, the above-mentioned effect is obtained. There was a problem that it was not possible.

In some cases, the effect of cushioning the impact is obtained by wearing thick socks. In particular, a sock in which the toe portion and the heel portion are thicker than other portions is also known for sports. When the knitted fabric was thickened, the effect of reducing the impact was insignificant as compared with the above-mentioned shoes and the like.

[0005]

DISCLOSURE OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and regardless of whether or not shoes are worn,
It is an object of the present invention to provide a sock that can be worn at all times, can provide exceptional cushioning to the soles, and can reduce the impact on the knees and waist.

[0006]

In order to achieve the above object, a sock according to the present invention is characterized in that a shock absorbing sheet body for absorbing an impact due to a load when worn is held at a portion corresponding to a sole. Features. Further, in the above-mentioned sock, a shock-absorbing sheet body is held on the innermost side surface of the sock body, and a sole contact surface of the shock-absorbing sheet body is covered with a cloth. And

Various types of impact-reducing sheets are conceivable, but those which are lightweight, relatively thin and have a sufficient cushioning property are preferable, for example, a high-density sheet capable of supporting a certain weight. An elastic body such as a sponge body and rubber can be exemplified. In particular, it is preferably a sheet made of silicone rubber. This is because silicone rubber has a small change in physical properties due to temperature changes,
For example, in order to maintain good elasticity over a wide temperature range of about -55 to 250 ° C, physical properties hardly change in a temperature range where daily contact is possible even when cooled in a freezer or dried, and stable for a long period of time. This is because it is possible to maintain the changed physical properties.

[0008] The impact relieving sheet body may be constituted by wrapping the surface of silicone rubber with a powder or a film, or may be constituted by encapsulating silicone rubber in a capsule. At this time, if the film or the sac has elasticity, the impact relaxation effect can be further improved. The shock absorbing sheet may have undulations. If the undulations are configured to stimulate the sole of the foot, health promotion and recovery from fatigue can be achieved.

[0009] The capsule body for enclosing silicone rubber may be formed by laminating a plurality of films and fusing a predetermined portion including a peripheral portion of these films, or an enclosing port for encapsulating silicone rubber. May be a sac formed integrally so as to open. Further, the inner sac filled with silicone rubber may be held in the outer sac.

It is preferable to use a thermoplastic urethane elastomer as a constituent material of the film. Since this thermoplastic urethane elastomer is a material having excellent tensile strength and excellent elasticity, the strength and flexibility of the film can be improved. Further, as a constituent material of the film, a material obtained by sticking a plurality of layers of a polyurethane film to a cloth-like body may be used. Examples of the cloth-like body to which the polyurethane film is adhered include a cloth made of a tetron having a thickness of about 75 and woven in India.

The thickness of the film is preferably 30 μm or more. When the thickness of the film is less than 30 μm, it is difficult to handle because the thickness is small, and the workability at the time of fixing work tends to be inferior. There are cases.

As described above, the sock according to the present invention may be a sock in which the above-described impact-absorbing sheet body is fixed to the inner surface or the outer surface of a portion corresponding to the sole of the sock main body made of a single layer of fabric. The above-mentioned impact-mitigating sheet may be fixed to the inner surface or the outer surface of any of the above-mentioned fabrics at a portion corresponding to the sole of the sock body composed of a plurality of fabric layers.

[0013] Further, the sock may be a sock in which a cloth-like body covering the impact-absorbing sheet fixed to the sock body except for the fixing surface to the sock body is fixed. In the case of a sock made of fabric and having a shock-absorbing sheet fixed on the inner surface of the fabric, the cloth-like body is interposed between the impact-releasing sheet and the sole, and And improve moisture absorption and air permeability. In addition, for example, when a plurality of fabric layers are used, and a sheet body for impact relaxation is located between these fabrics, friction occurs between the cloth-like body covering the sheet body for impact relaxation and the fabric facing the same. The impact relaxation sheet can be prevented from sliding between the plurality of fabric layers, and the foot can be further stabilized.

In particular, when the sock according to the present invention holds a shock-absorbing sheet made of a sac filled with, for example, silicone rubber, a plurality of films constituting the sac and a material to which the film is fixed A predetermined portion including the peripheral edge of the film is fused to the cloth to be fixed in a state where the film is overlapped, and silicone rubber is injected into a capsule formed by the fusion, and then the injection port is fused. By doing
The state in which the impact-mitigating sheet body is fixed to the cloth to be fixed may be formed, or a predetermined portion including the peripheral portion of the film may be fused in a state where a plurality of films are overlapped with each other. After injecting silicone rubber between a plurality of films, the injection port may be fused to form an impact-mitigating sheet, and the impact-releasing sheet may be fixed to the cloth to be fixed by bonding.

It is preferable that the thickness and hardness of the shock absorbing sheet are set so that the upper and lower surfaces do not partially contact with each other when the load is applied, and the feet do not shake. If the thickness is too thin or the hardness is too hard, it is difficult to obtain the desired impact relaxation effect.If the thickness is too thick or the hardness is too soft, the impact relaxation sheet body will bend sharply. The feet of the person become unstable and cause fatigue.

It is preferable that the innermost fabric or cloth which directly touches the skin is made of cellulose fiber, protein fiber, or both fibers. Cellulose fibers such as cotton and protein fibers such as silk are excellent in hygroscopicity and air permeability, and are excellent in absorbing and escaping sweat from the soles, so that a comfortable touch can be realized, It is suitable as a measure against stuffiness at the feet.

The outer surface of the outermost fabric and at least a portion corresponding to the heel or toe of the sock is a Kevlar (KEVL).
AR: manufactured by Du Pont) or a blended yarn of an aramid fiber and another fiber. The aramid fiber is a fiber widely used as a reinforcing fiber in, for example, ropes and cables. According to this, it is possible to reinforce the strength of a portion where fraying is likely to occur due to friction. Can be greatly improved. Furthermore, when cotton is used in combination with the innermost fabric, moisture absorption and air permeability can be sufficiently improved.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a sock according to an embodiment of the present invention will be described with reference to the drawings. Note that the present invention is not limited to this. FIG. 1 shows a sock 10 according to an embodiment.
FIG. 2 is a schematic partial sectional view showing a state where the sock 10 is worn. In the illustrated example, the sock 10 has, for example, a two-layer structure of an innermost fabric 11 and an outermost fabric 12, and, for example, two elastic films 13a are provided on the outer surface 11b of the innermost fabric 11 in a portion corresponding to the sole. , 13b, a silicone rubber 14 having an appropriate elasticity and hardness is sealed, and a shock absorbing sheet body 15 for absorbing an impact due to a load when worn is fixed.

Here, the shock absorbing sheet body 15 is shown in FIG.
This will be described below with reference to the diagrams shown in FIGS.
The shock absorbing sheet body 15 is composed of two films 13a and 13
The silicone rubber 14 is sealed in the capsule body 13 made of b, and as is apparent from the schematic sectional views (b) and (c), for example, the portion Q corresponding to the arch is slightly thicker. It is formed and configured to stimulate the arch.

The silicone rubber 14 is obtained by mixing an organopolysiloxane having a high polymerization degree with a curing agent such as an inorganic filler and benzoyl peroxide, kneading the mixture, kneading the mixture, molding, heating, vulcanizing and curing. Things. It has little change in properties due to temperature and retains elasticity over a wide temperature range. Therefore, in a temperature range that can be generated on a daily basis, its properties do not change at all, and stable elasticity can be maintained. The hardness of the silicone rubber 14 can be arbitrarily set depending on the amount of the curing agent added, and a hardness suitable for a general weight range may be selected, and is not limited at all.

The thickness and hardness of the shock absorbing sheet 15 are such that the films 13a and 13b do not partially contact when the load is applied to the shock absorbing sheet 15, and the feet do not shake. It is preferably set to the degree. If the thickness is too thin or the hardness is too hard, it is difficult to obtain a desired impact relaxation effect. If the thickness is too thick or the hardness is too soft, the impact relaxation sheet 1
This is because the wobble 5 causes the feet of the user to be unstable and causes fatigue.

In the illustrated sock 10, the innermost fabric 11 is made of, for example, 100% cotton fiber, and the outermost fabric 12 is made of, for example, 70% cotton and KEVLAR: D.
u Pont) and cotton and 30%. In the outermost fabric 12, when the proportion of the blended yarn of Kevlar and cotton is increased, the fabric strength can be reinforced. On the other hand, when the proportion of the cotton is increased, the moisture absorption of the fabric is improved. Can be done. In addition to these, it is a matter of course that fibers such as silk and synthetic fibers can be used, and that the characteristics of each fiber can be arbitrarily derived by changing the blend ratio. In any case, it is preferable to use a highly hygroscopic fabric such as cotton as the innermost fabric 11 from the viewpoint of preventing stuffiness at the feet.

The films 13a, 13b constituting the bladder 13 attached to the outer surface 11b of the innermost fabric 11 at the corresponding portion of the sole are made of, for example, a thermoplastic urethane elastomer which can be stretched within a controlled limit. I have. This thermoplastic urethane elastomer is non-porous, can be easily fused and bonded, has a high degree of resistance to bending fatigue, and is resistant to fungi and perspiration that are likely to occur in the sock use environment. It has a high resistance to relaxation and has excellent resistance to relaxation and stress when continuously subjected to strong tensile force. In addition, these characteristics can be obtained without any deterioration in the temperature range in the living environment (about -20 to 40 ° C.).

The thickness of each of the films 13a and 13b is preferably 30 μm or more. Film 13
When the thickness of each of the films 13a and 13b is less than 30 μm, it is difficult to handle because the thickness is small, and the workability at the time of fixing the capsule 13 tends to be inferior. Material costs may be increased by the required amount.

The sac 13 may be a continuous sac without a seam or, as shown in the embodiment, for example, a bag formed by fusing the edges of two films 13a and 13b. May be.

Hereinafter, an example of a manufacturing process of the sock 10 described with reference to FIGS. 1 to 3 will be described with reference to schematic partial sectional views shown in FIGS. 4 (a) to 4 (d). First, the film 13a and the film 13b are aligned, and opposing arrows x,
The peripheral portions of the films 13a and 13b are partially
3c is fused by thermocompression bonding (FIG. 4).
(A)). As a result, a sac 13 composed of the films 13a and 13b is formed (FIG. 4B). Next, the sac 13
After the desired silicone rubber 14 is injected into the capsule 13 from the portion 13c, the portion 13c is fused to form an impact-mitigating sheet body 15 in which the silicone rubber 14 is sealed. (FIG. 4 (c)). Separately, the innermost fabric 11 is put on the last 20 in advance, and the outer surface 11a of the innermost fabric in the portion corresponding to the sole is filled with the silicone rubber 14 formed by the steps of FIGS. The bladder 13, that is, the sheet 15 for impact relaxation is adhered by an adhesive or the like (FIG. 4D).

The fusion including the peripheral portion of the envelope 13 may be heat fusion or fusion by high frequency irradiation.
As the adhesive for bonding the sac 13 to the innermost fabric 11, for example, a urethane adhesive is used. This urethane adhesive is cured at room temperature, does not generate gaseous by-products at the time of curing, is easy to adjust the hardness, and has a small adhesive strain, which is preferable.

The sock 10 according to the embodiment may be formed by the steps shown in FIG. 4, but another forming step includes the steps shown in FIGS. 5 (a) to 5 (c). First, the innermost fabric 11 is put on the last 20 to align the outer surface 11a of the innermost fabric with the films 13a and 13b at the corresponding portion of the sole (FIG. 5A). In this state, the arrow x in the figure
The peripheral portions of the films 13a and 13b are partially
Thermal fusion is performed while leaving only c. Thereby, the film 13
A sock 10A in which the sac 13 composed of a and 13b is fixed to a portion corresponding to the sole can be obtained (FIG. 5B). Next, a desired silicone rubber 14 is sealed from a portion 13c which is a peripheral portion of the capsule body 13 and is not fused in the step of FIG. 5B, and the portion 13c serving as a sealing port is fused. Next, the outermost fabric 12 is put on the outermost fabric 11 to which the sac 13 enclosing the silicone rubber 14 is attached, and the innermost fabric 11 and the outermost fabric 12 are fixed at a predetermined position (FIG. 5). (C)). At this time, it is preferable that the innermost fabric 11 and the outermost fabric 12 are continuous at the end 10a corresponding to the ankle.

The outermost fabric 12 does not necessarily need to be entirely made of a blended yarn of reinforcing fibers and other fibers.
At least on the outer surface of the outermost fabric 12 and on the heel portion or the toe portion of the sock 10, for example, Kevlar (KEVLA)
R: manufactured by Du Pont) and a general fiber for clothing such as cotton. The above-mentioned Kevlar is a typical fiber of aramid fiber, and is known as a fiber having excellent mechanical strength. When the reinforcing fiber or its blended yarn is partially used as described above, the strength of the portion where the fiber is used can be particularly strengthened, so that the sock 10 can have a frictional strength and durability that can withstand long-term use. Wash resistance can also be imparted.

Further, in the present invention, the sock 10 in which the silicone rubber 14 is sealed in the sac 13 fixed to the corresponding portion of the sole is shown. The present invention is not limited to 15 and can be applied to a sock in which a shock-absorbing sheet made of another elastic material such as a sponge or rubber having an appropriate cushioning property is fixed. Can be

In the embodiment, the sock 10 is composed of two pieces, an innermost cloth 11 and an outermost cloth 12.
Has been described, but is not limited to this,
In another embodiment, a sock in which three or more fabrics are stacked may be used.

Further, for example, a sock made of a single layer of fabric, and the shock-absorbing sheet member 15 as described in the embodiment is held on the inner surface or the outer surface of a portion corresponding to the sole of the sock. You may. Shock mitigation sheet 15
Is held on the innermost side of the sock body, the sole of the sock and the upper surface of the impact-mitigating sheet body 15 come into contact with each other when worn, but as in the case described in the embodiment, As shown in FIG. 6, a high moisture-absorbing and air-permeable cloth-like body 16 is provided on the sole contact surface of the shock absorbing sheet 15 in order to absorb and diverge sweat and the like and to provide a comfortable touch.
Is preferably attached. As the cloth 16,
For example, as shown in FIG. 7 (a), when the sole 16a has a mesh-like contact surface 16a and the contact surface 16b with the impact-reducing sheet body 15 has a felt-like shape, the mesh can be used. It is easy to spread sweat from the part to the felt part,
Even when sweating, it is possible to secure warmth while obtaining a dry feel. Further, in the case where the sweating property is improved rather than the heat retaining property in the summer or the like, the cloth body 16 including only the mesh-like portion may be used.

Also, when the shock absorbing sheet body 15 is held on the outer surface of the sock body, the shock absorbing sheet body 1
By adhering the cloth-like body 16 ′ (FIG. 7B) covering the surface 5, it is possible to prevent the impact-reducing sheet body 15 from being exposed and to make it less slippery during walking. In this case, as the cloth 16 ', a protrusion 16d made of rubber or the like may be provided on the floor contact surface 16c as shown in the figure in order to make it more difficult to slip. Further, in the case of a sock constituted by a plurality of fabric layers, when cloth-like bodies 16 and 16 ′ that cover the impact-reducing sheet body 15 except for the fixing surface are attached, the impact-reducing sheet body 15 and the Since the cloth-like bodies 16 and 16 'are interposed between the cloth and the facing cloth, friction can be increased to make the cloth less slippery.
The feet can be stabilized.

In the embodiment, the case where both the films 13a and 13b constituting the capsule 13 are made of urethane elastomer has been described. However, the present invention is not limited to this. One of them may be made of nylon, for example. Further, as shown in FIG. 8, for example, a bag 23 is formed of sheets 23a and 23b in which a plurality of layers of polyurethane film 18 are adhered to a cloth body 19, and a silicone rubber 14 is sealed therein. The body 25 may be used, and as the cloth-like body 19, for example, a cloth or the like obtained by weaving a tetron or the like having a thickness of about 75 with an inner layer is used.

[0035]

As described above, according to the sock according to the present invention, since the sock in which the impact absorbing sheet for alleviating the impact due to the load when worn is held at the corresponding portion of the sole,
When this sock is worn, the sole of the foot can be provided with a remarkable cushioning property, and the impact on the knee and the waist can be absorbed particularly. Such an effect can be obtained even when the shoe is worn or when the shoe is not worn, and can naturally be obtained indoors. Therefore, it can be said that the sock can very easily obtain the impact relaxation effect. . Further, in recent years, for example, particularly middle-aged and elderly people have taken a walk or jog on a pavement road surface, and at the same time, problems such as causing obstacles to the waist and knees due to impact from the soles received at that time have come to the surface. However, according to the socks according to the present invention, it is possible to obtain a special cushioning property to the sole by wearing, without using a special shoe or the like specially improved cushioning properties, this socks can be used By wearing it, the above-mentioned impact can be easily alleviated and the above-mentioned problem can be solved.

When the sole contact surface of the sheet for cushioning the impact is covered with a cloth, it is possible to improve the moisture absorption and the touch.

When a sheet made of silicone rubber is used as the impact-mitigating sheet, a change in physical properties due to a change in temperature can be reduced.
Even if the sock according to the present invention is cooled in a freezer or dried, the shock absorbing performance does not change at all. Further, since silicone rubber is also excellent in water resistance, even if water soaks from the sole of the shoe, if the sock according to the present invention is worn, wetness does not reach the sole and the shoe is comfortable.

When the silicone rubber is held in the capsule and is in a sheet shape, and when the film constituting the capsule is made of, for example, a thermoplastic urethane elastomer,
It can be fused relatively easily by fusion with heat or fusion with high frequency, and can have a strong bond strength even when it is fixed to socks by an adhesive. Therefore, even if this sock is used for a long period of time or repeatedly washed, the state of fixation of the sac to the sock hardly deteriorates.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view showing a sock according to an embodiment of the present invention.

FIG. 2 is a schematic plan view showing a state where the socks according to the embodiment are worn.

3A is a schematic plan view showing an example of a sac held by a sock, FIG. 3B is an AA ′ sectional view, and FIG. 3C is a BB ′ sectional view.

4 (a) to 4 (d) are schematic cross-sectional views showing steps when producing a sock according to an embodiment.

5 (a) to 5 (c) are schematic cross-sectional views showing steps when manufacturing a sock according to another embodiment.

FIG. 6 is a schematic sectional view showing a sock according to another embodiment.

FIGS. 7A and 7B are schematic perspective views each showing an example of a cloth body.

FIG. 8 is a schematic cross-sectional view showing a capsule according to still another embodiment.

[Explanation of symbols]

10 socks 1
6c Floor contact portion 10a Ankle-applicable side end 1
6d protrusion 11 innermost fabric 1
8 Polyurethane 11b Outer surface of innermost fabric
Film 12 outermost fabric 2
0 Foot type 13 Cyst 2
3a, 23b Sheet 13a, 13b Film 13c Part 14 Silicone rubber 15 Shock mitigation sheet 16, 19 Cloth 16a Foot contact portion 16b Contact to shock mitigation sheet

Claims (4)

[Claims] 1. A sock in which a shock-absorbing sheet body for alleviating an impact due to a load when worn is held at a portion corresponding to a sole. 2. The sock according to claim 1, wherein the shock absorbing sheet is held on the innermost side surface of the sock main body, and the sole contact surface of the shock absorbing sheet is covered with a cloth. 3. The sock according to claim 1, wherein the shock absorbing sheet is a sheet made of silicone rubber. 4. The impact-mitigating sheet body is covered with an elastic film.
The sock according to any one of the above items.