JP2006225833A - Socks - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pair of socks improved in fitting feeling between the arch of a foot of a wearer and the socks, and demonstrating high exercise performance through lifting up the arch of a foot without giving excessive tightening feeling. <P>SOLUTION: This pair of socks is made up at least two kinds of elastic areas including a high elastic area and a low elastic area. The high elastic area comprises a series of areas joining at least an area crossing the arch of a foot and an area crossing the heel bone upper part, and the low elastic area comprises areas excluding the high elastic area. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a sock, and more particularly to a sock that improves the fit between the arch of the wearer and the sock and can exhibit high athletic performance by raising the arch.

Conventionally, various socks have been disclosed, such as socks intended to support the movement of the wearer's feet and improve exercise performance, and socks intended to improve fit to the feet. When paying attention to the wearer's foot, there is an important role of supporting the weight of the arch, reducing the burden on the body, and promoting the walking movement itself. However, the arch of the arch falls down due to the accumulation of fatigue and weight. And when the arch of the arch is depressed, the burden on the body increases, and it is said that high exercise performance cannot be exhibited.
Patent Document 1 discloses a sock intended to give a pleasant stimulus to the arch part by attaching a cushion that fits the arch part of the sock and forming a portion that is in contact with the arch part.
In Patent Document 2, a part of the rib protuberance is traversed by the sole of the foot, passes the back side of the ankle, and extends upward through the vicinity of both sides avoiding the central part of the Achilles tendon. A first strong surface member that reaches the upper side piece near the knee joint along the outer side of both sides of the abdomen in the longitudinal direction of the abdomen and a part of the arch that covers a part of the foot dorsal part and covers the tube Thus, there is disclosed a crus protective garment in which a second strong surface member that extends in the ankle direction from the back side to the front side and covers the ankle in a substantially cylindrical shape is applied.
In Patent Document 3, the soles corresponding to the metatarsal ligaments and the parts that abut on both sides thereof are made of a highly elastic material, and the parts that abut on the foot surface corresponding to the metatarsal ligaments are low. A sock comprising an elastic material and correcting a metatarsal ligament in a lateral arch-like reproduction direction by tightening from both sides when worn is disclosed.
Japanese Utility Model Publication No. 6-20407 JP-A-8-158105 JP 2005-42213 A

However, in the sock of the above-mentioned Patent Document 1, it is difficult to deal with everyone because the shape of the arch varies depending on the wearer. For example, if the arch of the arch is small, the cushion stimulates the arch, but it makes it easier to feel uncomfortable when wearing shoes. On the contrary, if the arch of the arch is large, the stimulation to the arch becomes small and the intended effect cannot be obtained. Moreover, in the sock of patent document 2, since the part with strong tightening force is arrange | positioned in a cylinder shape from an arch part to an instep part, the pressure concerning the instep part sensitive to an external stimulus also becomes high in a leg, and a feeling of wear is also carried out. It becomes uncomfortable. Moreover, in the sock of patent document 3, since the circumference | surroundings (both ends) of a high elastic material are comprised with a low elastic material, the force tightened from the both sides by a high elastic material is replaced with the low elongation force of a low elastic material, The metatarsal ligament cannot be sufficiently corrected in the lateral arched regeneration direction.
Therefore, in the sock of the present invention, by placing a strong elastic material and a weak material in place, the fit of the wearer's arch and sock is improved, and the arch can be used without feeling excessive tightening. The purpose is to provide socks that can exhibit high athletic performance by being pulled up.

Therefore, the sock of the present invention has solved the above-mentioned problems and has come up with an invention relating to a sock that can exhibit high exercise performance. That is, the sock of the present invention is a sock composed of at least two types of elastic force regions including at least a high elastic region and a low elastic region, and at least the following region (A) is composed of the high elastic region. The sock is characterized in that a region other than the high elastic region is formed of a low elastic region.
(A) A series of areas connecting areas crossing the arch and areas crossing the ribs.
Further, the sock is characterized in that the portion from the sole to the inner instep in the region (A) includes at least the following portion (A-10).
(A-10) A part of the thumb metatarsal, a part of the cuneiform bone, and a part of the scaphoid bone.
In addition, the sock is characterized in that a portion from the sole to the outer side in the region (A) includes at least the following portion (A-20).
(A-20) Part of the metatarsal bone of the little finger, part of the leg bone and part of the rib.
Further, in the high elasticity region, the region from the portion crossing the upper side of the rib to the inner side and / or the outer side is thicker than the other regions. It is.
Further, in the sock of the present invention, the tension in the direction from the arch portion of the sole to the upper instep through the inner instep is larger than the tension in the other region. Furthermore, the tension in the direction from the arch part of the sole to the outer shell side and above the ribs is larger than the tension in the other regions.

In the sock of the present invention, a series of regions connecting the region crossing the arch portion and the region crossing the ribs is configured with a high elastic region, so that the wearer's arch is pulled up, and various functions of the arch portion to be described later Can be increased. In addition, the fit of the wearer's arch and socks is improved.
In addition, unlike socks where a material with a strong tightening force is placed in a tubular shape from the arch to the instep, the arch can be stimulated without feeling excessive tightening on the instep, improving blood circulation. Swelling can be suppressed and fatigue can be reduced, and high exercise performance can be demonstrated.
In addition, the high elastic region is connected from the region crossing the arch to the region crossing the upper rib, and by not including the low elastic region in between, the force to pull up the arch is replaced with the extension force of the material other than the high elastic region The effect of the invention can be efficiently exhibited without any problems.
Also, in the high elasticity region, the region from the portion crossing the upper ribs to the inner side and / or the outer side is thicker than the other regions, so that shoes can be used with bare feet. Since the above-mentioned thick portion of the socks fills the space created when the shoe is worn, the fit with the shoe is improved. In addition, when the thickness of the arch is increased, the fit with the insole is improved, so that the function of the insole can be exhibited sufficiently.

  First, the structure of the foot and arch of the human body will be described. The foot has seven tarsal bones (cubic bone, scaphoid bone, rib, talus, first wedge bone, second wedge bone, third wedge bone), It consists of many tendons and muscles with five metatarsals (first to fifth metatarsals) and 14 ribs as the skeleton, and the bones and bones are strongly connected by ligaments. Three types of arches, which will be described later, are formed on the soles joined by bones and ligaments, and each arch is pulled upward by muscles, ligaments, etc. in order to maintain the arch shape.

FIG. 1 shows the structure of a human foot, FIG. 1 (a) is a view of the left foot viewed from the outside, FIG. 1 (b) is a view of the left foot viewed from the inside, and FIG. 1 (c) is a bottom view of the left foot. It is the figure seen from the side.
There are the following three types of arches on the human foot when standing.
1. It is composed of a rib 70, a talus 71, a scaphoid bone 72, an inner wedge bone 73, and a thumb (first) metatarsal bone 75, with the scaphoid bone 72 and the cuneiform bone 73 in the vicinity as apexes, and the heel portion A and the thumb root. Inner vertical arch AB linking part B.
2. An outer longitudinal arch AC composed of a radius 70, a cubic bone 74, and a little finger (fifth) metatarsal 76, with the vicinity of the radius cubic joint as a vertex and connecting the radius A and the little finger root C.
3. A lateral arch BC that is formed between the metatarsals or the ribs, has the index finger (second) metatarsal vicinity as a vertex, and connects the thumb base portion B and the little finger base portion C.

  Arch height is used as an index indicating the degree of arch height. Arch height refers to the scaphoid rough surface 72a (the scaphoid process located on the inside of the foot, which can be confirmed when touched from the skin surface. This is the distance to the projection), and the arch height is low when the arch is depressed.

  These arches work as a spring during exercise, relax and absorb the impact from the ground to maintain the balance of the body, smooth the weight support and weight transfer during exercise, and the feet smooth the stiffness, etc. .

  Specifically, the arch works by dispersing and supporting the load on the sole, absorbing the impact caused by landing during walking, and moving the center of gravity smoothly. At the time of landing, it acts as a cushion due to the arch sinking due to the impact when the ground and the sole contact with each other, and the impact is mitigated. After mitigating the impact, the arch is restored. However, the arch will not gradually return to its original shape due to repeated impacts. That is, the arch height is lower than the initial arch height when no load is applied. When the arch height is lowered, the amount of change of the arch is reduced when subjected to an impact, so that the function of the arch cushion is deteriorated and the impact is not sufficiently relaxed. This increases the burden on the foot, lower leg, knee, and waist, and causes fatigue of the foot and pain in the knee and waist.

Next, the arrangement of the high elasticity region 10 (indicated by the hatched portion in FIG. 2) and the low elasticity region 20 in the sock embodiment according to the present invention will be described with reference to FIG. 2 (a) is a view of the left foot socks from the outside, FIG. 2 (b) is a view of the left foot socks from the inside, and FIG. 2 (c) is a view of the left foot socks from the bottom side. It is. FIG. 2 shows socks in a worn state, and the wearer's skeleton is indicated by dotted lines.
In the sock 1 of the present invention, of the three types of arches, there are two types of the inner vertical arch AB connecting the heel portion A and the thumb root portion B and the outer vertical arch AC connecting the heel portion A and the little finger root portion C. Focus on the vertical arch. Then, by connecting the region R1 crossing the arch portion on the sole and the region R2 crossing the upper rib to form a series of high elastic regions 10, the arch portion of the arch portion of the wearer is caused by the elastic force of the high elastic region. It is pulled up and the fit of the wearer's arch and socks is improved, and various functions of the arch can be enhanced by maintaining the arch at a high position. In the description of the present invention, when simply described as “arch portion”, two arches, that is, the inner vertical arch AB and the outer vertical arch AC are shown.

In the high elasticity region 10, the portion 11 from the sole to the inner shell side preferably includes at least a part of the thumb metatarsal 75, a part of the wedge-shaped bone 73, and a part of the scaphoid bone 72. More specifically, it is preferable to include the posterior part of the thumb metatarsal bone 75, the substantially entire wedge-shaped bone 73, the anterior part or substantially the entire scaphoid bone 72, and the lower part or approximately the entire talus 71. This is because it is suitable for pulling up the inner longitudinal arch AB.
In the high elasticity region 10, the portion 12 from the sole to the outer shell side may include at least a part of the little toe metatarsal 76, a part of the leg bone 74, and a part of the rib 70. preferable. More specifically, it is preferable to include the posterior portion of the little finger metatarsal 76, the substantially entire leg bone 74, the anterior portion of the radius 70, the lower portion of the talus 71, or substantially the whole. This is because it is suitable for pulling up the outer longitudinal arch AC.
Further, when the high elasticity region is viewed from the sole side, it is preferable that the inner side region is located slightly on the toe side compared to the outer side region. This is because the mountain of the inner vertical arch is generally located closer to the toe side than the mountain of the outer vertical arch.

  Of the highly elastic region, the width W1 in the longitudinal direction of the region crossing the arch is preferably about 10 mm or more and less than 200 mm. When it is smaller than 10 mm, pressure is applied to the local part of the sole, which makes the wearing feeling uncomfortable. If it is larger than 200 mm, pressure is applied to parts other than the inner vertical arch and the outer vertical arch, so that a burden is applied to the skeleton and muscles that are not intended, and improvement in exercise performance cannot be expected.

  Conventional socks and supporters aimed at raising the arch are made of a material with a strong elastic force in a tubular shape from the arch to the instep. Such pressure is increased and the feeling of wearing is uncomfortable, but in the socks of the present invention, such a problem is solved because the highly elastic material is not disposed on the instep.

  In the high elasticity region 10, the arrangement on the heel side is the portion 13 that crosses the upper side of the rib 70 because the fabric material of the high elasticity region 10 easily fits into the recess 77 (Achilles tendon portion) in the upper part of the rib. It is. Moreover, it is preferable that the width W2 of the longitudinal direction in the said area | region is 5 mm or more and 200 mm or less. If it is smaller than 5 mm, pressure is applied to the local part and bites into the Achilles tendon, which makes the wearing feeling uncomfortable. When it is larger than 200 mm, pressure is also applied to the lower leg and the buttocks, so that the movement performance is deteriorated by preventing the movement of muscles in the lower leg and applying extra pressure to the buttocks.

As described above, the sock of the present invention is connected in a series from the region where the high elastic region crosses the arch portion to the region crossing the upper portion of the rib, and by not including the low elastic region therebetween, the force to lift the arch portion is increased. It is difficult to replace the extension force of materials other than the high elasticity region (low elasticity region etc.). Therefore, the force to pull up the arch from the arch to the upper part of the rib is continuously connected, and the arch can be lifted efficiently.
Also, the tension in the direction from the arch part of the sole to the upper side through the inner instep and the tension in the direction from the arch part of the sole to the outer side to the upper part of the rib is higher than the tension in the other region. Is also getting bigger.

  In the description of the present invention, each part, region, etc. of the sock is described by each part of the human body, and this represents a part corresponding to each part of the wearer when wearing the sock.

In the sock of the present invention, the high elasticity region only needs to be arranged in the above-described region, and the range in which the other low elasticity regions are arranged is not particularly limited. For example, the length of the socks may be any length such as below the knee or above the knee. It may also be a garment such as tights.
In the sock of the present invention, if the high elasticity region is arranged in the above-described region, the sock can include elastic regions other than the high elasticity region and the low elasticity region.

  In the present invention, as a method of realizing a high elastic region, a method using a material that has a strong return such as using polyurethane, a tuck or mistake without knit the yarn, or adding another yarn Examples thereof include a method using a structure such as making a structure that is difficult to stretch, and a method using other resins.

The elastic force in the high elastic region and the low elastic region in the present invention will be described using the sock longitudinal and circumferential elongation rates. First, in the longitudinal direction, it is preferable that the elongation rate when 17.7 N (1800 gf) is applied in a width of 30 mm × 20 mm is 30% or more in both the high elastic region and the low elastic region. In addition, the elongation at the load of 4.9 N (500 gf) in a width of 30 mm × 20 mm is B2> B1 when the value of the high elastic region is B1 and the value of the low elastic region is B2, and B1 is 10%. It is preferable that the range is 300% or less and B2 is 15% or more. In order to sufficiently obtain the effects of the present invention, it is preferable that the difference in elongation between the high elastic region and the low elastic region is 5% or more.
When the B1 is smaller than 10%, the high elasticity region is tightened too much, so that pain is felt. If the value of B1 is greater than 300%, the effect of the present invention cannot be obtained because the tightening is too loose. When the value of B2 is smaller than 15%, the tightening in the low elastic region is too strong.
Next, in the circumferential direction, it is preferable that the elongation rate at the time of 17.7 N (1800 gf) load in a 30 mm × 20 mm width is 100% or more in both the high elastic region and the low elastic region. In addition, when the load of 4.9 N (500 gf) is applied to a 30 mm × 20 mm width, when the value of the high elastic region is B3 and the value of the low elastic region is B4, B4> B3 and B3 is 20%. It is preferable that the range is 500% or less and B4 is 30% or more. In order to sufficiently obtain the effects of the present invention, it is preferable that the difference in elongation between the high elastic region and the low elastic region is 10% or more.
When B3 is less than 20%, the high elasticity region is too tight, and pain is felt. If the value of B3 is greater than 500%, the effect of the present invention cannot be obtained because the tightening is too loose. When the value of B4 is smaller than 30%, the tightening in the low elastic region is too strong.

  If it is in the range of the said elongation rate, a highly elastic area | region can give a moderate fastening feeling. Moreover, the range of the elongation rate in the low elastic region is the same range as the elongation rate of a normal sock, and has an extensibility that allows the sock to be worn sufficiently and an elastic force that does not cause a shift or slack.

  Further, in the high elastic region and the low elastic region, it is not necessary that the elongation rate in all the places in the same region is the same. Changes may be given.

  The elongation rate is determined according to a constant speed elongation method (JIS L 1096 6.14.1.A method). As a measuring device, a TENSILON universal type tensile tester (UTM-III-200, manufactured by Toyo Baldwin) was used, the tensile strength was 200 mm / min, the size of the sample fabric was 20 mm wide, 50 mm long, The holding interval was 30 mm. Tensile loads were 4.9 N (500 gf) and 17.7 N (1800 gf). The elongation rate and load used in the description of the present invention are based on this measurement method. Further, when actually performing the measurement, the sample fabric is knitted with the material only for the portion to be measured and measured.

  In the present invention, the elastic force is a resistance force of a material against elongation.

  In the sock of the present invention, the tension is applied in the direction from the arch portion of the sole to the inner instep and above the ribs by being configured as described above. In addition, the tension works in the direction from the arch of the sole to the upper side of the rib through the outer instep. The tension in the above direction is larger than the tension in other regions (for example, the tension in the circumferential direction and the longitudinal direction of the instep part, the tension in the circumferential direction and the longitudinal direction of the ankle part).

  In the sock of the present invention, A1> A2 when the value of the clothing pressure in the high elasticity region at the arch is A1 and the value of the clothing pressure in the low elasticity region at the instep is A2.

  Moreover, the clothing pressure of the high elastic region in the arch portion is 2.0 kPa or more and 20.0 kPa or less, and the clothing pressure of the low elasticity region in the instep portion is 0 kPa or more and 20.0 kPa or less. In addition, when the clothes pressure in the high elastic region is 3.0 kPa or more and 7.0 kPa or less, the effect of raising the arch portion is most exhibited. The most comfortable wearing feeling can be obtained when the clothing pressure in the low elasticity region at the instep is 6.0 kPa or less.

When the clothing pressure in the high elastic region at the arch is less than 2.0 kPa, tightening becomes loose and the arch cannot be lifted sufficiently. If it is greater than 20.0 kPa, too much force will be applied, and if worn for a long time, the arch will feel pain.
Further, when the clothing pressure in the low elasticity region in the instep part is greater than 20.0 kPa, too much force is applied to the instep part.
Further, when the relationship between A1 and A2 is A1 <A2, the pressure on the instep part is felt rather than the lifting of the arch part, so that a sense of incongruity occurs when worn and the effect of the present invention cannot be obtained. . Furthermore, if the clothing pressure in the instep region is greater than the clothing pressure in the arch region and the difference is 2.0 kPa or more, a sense of discomfort and discomfort will be felt strongly. (In a normal sock composed entirely of the same material, the clothing pressure in the instep region is about 0.5 to 1.0 kPa greater than the clothing pressure in the arch region.)

The clothing pressure can be measured by attaching a pressure sensor to a human body or a mannequin and putting on socks.
The pressure sensor includes an air pack type pressure sensor, a sheet-like pressure sensor, and the like. The clothing pressure measured by these sensors is displayed on a personal computer or a data collector through an amplifier. In the present invention, an air pack pressure sensor is attached to the mantle's instep and arch, and socks are put on the sensor to measure the clothing pressure applied to the instep and arch. The air pack type pressure sensor uses the AMI3037 series (φ20) manufactured by AIM Techno, the clothing pressure transducer (amplifier) uses the AMI3037-2 manufactured by AIM Techno, and the data collector AM-7052 manufactured by Anritsu Keiki Co., Ltd. is used.

  As shown in FIG. 1, the positions where the pressure sensors are attached (the wearer's skin surface) T1, T2 are the positions where the arch portion T1 is on the circumference of the foot passing through the scaphoid bone and the vertical distance is 15 mm from the floor surface. The upper part T2 was positioned above the scaphoid bone.

  Measurements are possible on both the human body and the mannequin. However, in the case of the human body, individual differences in the shape and dimensions of the feet are very large, and the way of attaching the skeleton and muscles is complicated, making it difficult to perform quantitative measurement. Therefore, the evaluation using the mannequin mentioned later which consists of a foot part, a leg part, and a knee part made based on the basic body size of a Japanese is shown. The value of the clothing pressure used in the description of the present invention is a value measured using a mannequin by the measurement method described above.

  Explaining the mannequin used for the measurement, using three-dimensional foot type measuring machine for 300 adult Japanese men, foot length, foot girth, foot width, instep girth length, heel width, inner tread length, Outer tread length, foot circumference highest point height, instep circumference highest point height, 1st finger foot angle, 5th finger foot angle, scaphoid bone point height (arch height), outer fruit end height, inner fruit end height, Approximately 160000 centering on items such as height of the outermost cusp, height of the inner heel, inclination angle of the heel, minimum lower leg, maximum lower leg, minimum lower leg, maximum lower leg, knee circumference, lower leg length, etc. Point coordinate data were measured. These data were averaged to determine the average foot-shaped coordinate points of adult Japanese men. A foot type mannequin can be created by smoothing unique points with 3D CAD, molding the data on a computer, inputting the data into a 3D molding machine, and cutting the gypsum.

  FIG. 3 is a view showing the above-described foot-type mannequin (left foot), FIG. 3 (a) is a schematic view seen from the back side of the foot, and FIG. 3 (b) is an enlarged view seen from the foot side. 3 (c) is an enlarged view of the instep viewed from the outside, and FIG. 4 is a view showing the entire lower leg. Tables 1 and 2 show the parts, the definitions of the parts, the symbols in the figures, and the dimensions of the foot mannequin 80 shown in the drawings.

  In the high elasticity region, it is preferable that the region from the portion 13 crossing the upper side of the rib to the side portion on the inner shell side and the side portion 14 on the outer shell side is thicker than the other regions. This is because this region is a region in which a slight gap is generated between the shoe and the sock, so that the fitting property between the shoe and the sock can be improved by providing a thickness to this portion. Specifically, it is preferable to have a thickness of 1 mm or more and 15 mm or less in comparison with other regions when not worn. If it is smaller than 1 mm, the space between the socks and the shoes cannot be sufficiently filled, and the fit cannot be improved. If it is larger than 15 mm, it is too thick to be suitable for wearing shoes. The portion to which thickness is imparted may be provided only on either the side from the upper side of the rib to the inner side or the side from the upper side of the rib to the outer side. Moreover, when a thickness is similarly given to the arch part, a feeling of fitting with an insole improves.

  As a method of knitting the thick portion, there is a method of inserting a yarn other than the yarn used in other portions into the portion to be given thickness. An example is a cut boss. In addition, there is a method in which a texture with unevenness can be formed by tacking or making mistakes in a highly stretchable yarn knitted in a portion to be thickened, thereby increasing the apparent thickness. An example is float knitting. Further, there is a method of increasing the thickness by increasing the pile length of the yarn constituting the portion to be given thickness. There is also a method of coating with resin.

  The elastic yarn used for the sock of the present invention is preferably at least one selected from polyurethane elastic yarn, polyester elastic yarn and nylon elastic yarn. This is because it is highly stretchable and suitable for socks. The elastic yarn may be either a bare yarn or a covering yarn whose surface is coated with polyester fiber or nylon fiber. It is also possible to use high crimped false twisted yarns such as polyester and nylon that have been subjected to high crimp false twisting for at least part or all of the fabric.

  When the socks are made of woven fabric or knitted fabric, it is preferable to use at least a part of elastic yarn having elasticity such as polyurethane yarn.

  Examples of the knitted fabric in the sock of the present invention include a single knitted fabric such as a tentacle, a rib knitted fabric, a pearl knitted fabric, a Kanoko fabric, and a double knitted fabric such as a smooth fabric.

  The knitting structure used for socks can basically be knitted with only one layer of structure by the knitting needles that knitting the surface, but the yarn constituting the surface and the yarn constituting the back surface are fed to the knitting machine from one yarn feeder. By doing so, the front surface and the back surface can be formed of different yarns. For example, when a polyester yarn is arranged on the front surface and a polyurethane yarn is arranged on the back surface in a tengu structure, a so-called stretch tenji (bear tengu) can be knitted.

  As knitting machines for molding socks, there are round knitting machines manufactured by Lonati, Mattek, Santoni, Pentorina, San Giacomo, and the like. These circular knitting machines can control the movement of the knitting needle by computer control or mechanical control, and can knitting an arbitrary portion with an arbitrary knitting structure and an arbitrary yarn. Therefore, it is possible to configure the fabric seamlessly in the high elastic region and the low elastic region. In order to configure a high elasticity region, a low-stretch yarn or a strong kickback yarn can be inserted into the knitted fabric using a technique called a cut boss to increase the elastic force at an arbitrary location. By increasing or decreasing the number of needles of the circular knitting machine while molding the socks, socks that match the shape of the foot can be molded.

The following means can be taken as an example in order to obtain a stretch characteristic depending on the material of each part.
(1) The high elastic region has a higher elastic yarn component ratio than the low elastic region.
(2) The high elasticity region is thicker than the low elasticity region.
(3) The high elastic region uses a high tension elastic yarn as compared with the low elastic region to manufacture a knitted fabric.
(4) The highly elastic region is coated with resin.
(5) The fabric is laminated on the high elasticity region.
Moreover, in order to give a stretch characteristic with a structure | tissue, the following means can be taken as an example.
(6) The high elastic region increases the knitting yarn and increases the knitting density as compared with the low elastic region. (7) The high elastic region increases the knitting density and closes the stitches and the like as compared with the low elastic region.
(8) The high elasticity region tacks or floats at least one of the yarns constituting the tissue as compared with the low elasticity region.

  The method described in the above (1) to (3) will be described in more detail by giving the fabric material a “strong” elastic force and adapting it to the high elastic region and the low elastic region. High and low crimped yarns (hereinafter referred to as stretch yarns) can be made to have a “strong” and “elastic” elastic force, respectively, with a mix ratio of “high and small”. As a method of changing the blend ratio, changing the thickness of the stretch yarn to “thin and thin” gives the blend ratio “large” or “small”. There is a way to get a “large” or “small” mix ratio. Furthermore, there is a method of giving the fabric material a “strength” elastic force by using stretch yarns having the same fineness but different materials and processing methods and different elastic characteristics. It is also possible to change the knitting density to “sparse / dense” when the mixing ratio of the stretchable yarn is constant.

As the method described in the above (4) to (5), there is a method in which a so-called “strong” elastic force is given to the socks by coating a resin such as silicon on a high elastic region. Depending on the type of resin and the thickness of the coating, the strength of the elastic force can be increased. In addition, as a method of giving a sock elastic strength by attaching a plurality of fabrics in a high elastic region, a two-layer laminate fabric obtained by laminating a stretchy knitted fabric or woven fabric into two layers, Elasticity can be enhanced by forming a three-layer laminate fabric by sandwiching a resin sheet such as a stretchable polyurethane sheet with a stretchable knitted fabric or woven fabric into a three-layer laminate.
By changing the elastic force of the laminated fabric to “strong”, it is possible to give the laminated fabric an “strong” elastic force. Alternatively, it is possible to give the fabric a “strong” elastic force by changing the number of the same fabrics to be stacked. Compared to the case where the fabric is used in a single layer, the laminate fabric is less likely to exceed a certain stretch rate when a large load is applied to the fabric, and is suitable for use in a highly elastic region. However, it can be used as a low elastic region as long as it is within the elastic force range of the low elastic region.

  As the method described in (6) above, by increasing the knitting yarn, the knitting density increases, the frictional resistance of each yarn increases, and it becomes difficult to stretch. There is a way to have. For example, there is a method of increasing the yarn to be knitted only in a necessary portion such as a cut boss. In particular, it is effective if the yarn to be knitted is a high stretch yarn such as polyurethane.

  As the method described in the above (7), the socks have a “strength” elastic force by making use of the fact that the knitting density increases, the frictional resistance of each yarn increases, and it becomes difficult to stretch. There is a way to make it. The effect is most effective when the degree of high elasticity is reduced and the degree of low elasticity is increased.

  As the method described in (8), there is a method in which the sock has a “strong” or “elastic” elastic force by utilizing the fact that it becomes easy to be pulled by tucking or floating the yarn constituting the structure. The more tack and float per unit area, and the more the stitches float continuously, the stronger the elastic force. For example, the kickback power can be adjusted by arbitrarily changing the float width of the rubber thread (DCY) inserted in this portion to 1 × 1, 2 × 1, 3 × 1, 4 × 1, or the like. .

  The “strong / weak” elastic force in the high elastic region and the low elastic region can be confirmed by the magnitude of the load having a constant elongation rate. That is, a fabric with strong elastic force has a large load, and a fabric with weak elasticity has a small load.

  The socks of the present invention include linking with no seam at the toe after molding with a circular knitting machine, and Rosso with seams.

Examples will be described below. The shape of the present embodiment is the same as that described with reference to FIGS. The description of the parts already described in the best mode for carrying out the invention will be omitted.
In this example, a computer controlled circular knitting machine manufactured by Lonati was used as the knitting machine. The diameter of the knitting machine is 3.75 inches, and the number of needles is 200. By controlling the vertical movement of 200 needles in 8 steps by computer control, the length of loops of knits, tacks, mistakes and yarns can be adjusted. Knitting with 200 or fewer needles, The number can be increased up to 200.

  Also, as knitting machines for molding socks, there are Lonati, Matek, Santoni, Pentorina, San Giacomo circular knitting machines, and the like. These circular knitting machines can control the movement of the knitting needle by computer control or mechanical control, and can knitting an arbitrary portion with an arbitrary knitting structure and an arbitrary yarn. Therefore, it is possible to configure the fabric seamlessly in the high elastic region and the low elastic region. In order to construct a high elasticity region, a method called cut boss is used to insert a low stretch yarn or a strong kickback yarn into the knitted fabric, and any portion other than the toe and heel is highly elastic. Can be an area. Socks that match the shape of the foot can be molded by increasing or decreasing the number of needles of the circular knitting machine while molding the toe or heel.

  The socks used in this example consist of three types: acrylic yarn (32 /-), FTY yarn covering nylon with polyurethane, DCY yarn (70/70), and cotton yarn (30 /-). Acrylic yarn, FTY yarn and DCY yarn constitute the whole sock, and cotton yarn is partially used.

In the sock of the present embodiment, the rib is taken from the region crossing the arch (the inner shell side is the portion including the wedge-shaped bone and the scaphoid bone from the thumb metatarsal bone, and the outer shell side is the portion including the leg bone from the little finger metatarsal bone). The region extending above is a series of highly elastic structures, and is composed of acrylic yarn, FTY yarn, DCY yarn, and cotton yarn. All acrylic yarns are knitted. As for FTY yarn and DCY yarn, the first course is miss, miss, knit, miss, miss, second course is miss, knit, miss, knit, miss, third course is knit, miss, miss, miss, miss, knit, The 4th course is Miss, Knit, Miss, Knit, Miss, and the 5th course is Miss, Miss, Knit, Miss, Miss, and when viewed from the back by repeating the organization of 5 courses x 5 wales, The FTY yarn and the DCY yarn are configured like a diamond pattern.
Since the FTY yarn and the DCY yarn are mistaken and become a structure that is difficult to stretch, the elastic force becomes strong. In addition, in the part where the FTY yarn and the DCY yarn are mistaken, the force acts in the direction in which the FTY yarn and the DCY yarn contract, and in order to keep the balance of the force in the course direction of the acrylic yarn, the FTY yarn, and the DCY yarn, The knit part constituted by the acrylic thread becomes convex. Therefore, an uneven structure can be formed, and the apparent thickness can be increased.

  Of the highly elastic tissue, cotton yarn was inserted as a cut boss in the portion from the scaphoid bone to the rib on the inner shell side and in the portion from the leg bone to the rib on the outer shell side. All cotton yarns are knitted, and the loops are enlarged by adjusting the height of the needles so that they are piled when viewed from the back. By knitting in this way, it is possible to further increase the thickness compared to other parts. Further, the elastic force can be increased.

  In the state where the socks of this example are not worn, the thickness of the normal high elastic tissue portion is 2.8 mm, the thickness of the portion where the cotton yarn is inserted as a cut boss in the high elastic tissue portion is 3.2 mm, and other regions Has a thickness of 1.9 mm.

  The region other than the high elastic region is a low elastic region, and is composed of acrylic yarn, FTY yarn, and DCY yarn. The elastic force was weakened by forming an elongated rib knitting structure so that the acrylic yarn appeared on the front surface and the FTY yarn appeared on the back surface.

In the molding of the product of the present invention, the mouth portion, the ankle portion, the foot portion, and the toe portion are knitted in this order. At first, we knit with acrylic yarn only, and when we knit 20mm, we also add FTY yarn and DCY yarn. When molding the heel part, only some of the needles move up and down repeatedly, the remaining needles are stopped, and the needles are switched from circumferential movement to arc movement. During the arc motion, the number of needles that move up and down is increased as the most bulged part of the buttocks is molded, and after passing over the part that is most bulged, the number of needles that move up and down is reduced. By doing so, a collar part can be shape | molded in convex shape. When molding the toe part, the vertical movement of some needles is stopped, the remaining needles are moved, and the circular movement is switched to the circular movement. Reduce the number of needles that move up and down during the arc motion. By doing so, the toe portion can be made into a rounded knitted fabric.
The structure knitted only with the acrylic thread in the mouth part is folded back and sewn with the main body to form a mouth part with a good wearing feeling. By sewing the knitting end part of the toe part and the main body, it becomes a toe part that matches the shape of the finger.

  The width W1 in the longitudinal direction of the highly elastic region crossing the arch portion was 55 mm. By doing so, no force is applied to the other extra portions, so that the feeling of wearing is good and the foot is not adversely affected, and the arch portion can be effectively pulled up.

  The width W2 in the longitudinal direction of the highly elastic region crossing over the ribs was 15 mm. By doing so, the highly elastic tissue is sufficiently held above the ribs, socks do not slip off, and the highly elastic part that pulls up the arch part can be maintained continuously. And since the space which can be formed between socks and shoes by having the said thickness is filled, the feeling of wear when putting on shoes improves.

  The garment pressure in the high elastic region at the arch portion of the sock of this embodiment is 4.2 kPa, and the garment pressure in the low elastic region at the instep is 3.5 kPa. In addition, Table 3 below shows the value of the elongation ratio of each region in the sock of this example.

In addition to the above examples, various evaluations shown below were performed using the comparative product 1 and the comparative product 2.
First, the specifications of the comparative product 1 and the comparative product 2 will be described.

(Comparative product 1)
The sock of the comparative product 1 is composed of three types: acrylic yarn (32 /-), FTY yarn that covers polyurethane on nylon, DCY yarn (70/70), and cotton yarn (30 /-). Acrylic yarn, FTY yarn, DCY yarn, and cotton yarn constitute the entire sock.
From the arch part to the instep part, the rib structure is formed by repeating the structure of the FTY yarn and the DCY yarn such as knit, knit, miss, and miss. The part other than the rib structure is composed of a pile structure, and the acrylic thread is piled to touch the skin surface. By setting it as such a structure, the structure | tissue where clamping | tightening is stronger than another area | region is arrange | positioned cylindrically from an arch part to an instep part.

  The clothing pressure at the arch is 3.1 kPa, and the clothing pressure at the instep is 5.1 kPa.

Molding is performed in the order of the mouth part, the ankle part, the foot part, and the toe part. At first, we knit with acrylic yarn only, and when we knit 20mm, we add FTY yarn, DCY yarn and cotton yarn. When molding the heel part, only some of the needles move up and down repeatedly, the remaining needles are stopped, and the needles are switched from circumferential movement to arc movement. During the arc motion, the number of needles that move up and down is increased as the most bulged part of the buttocks is molded, and after passing over the part that is most bulged, the number of needles that move up and down is reduced. By doing so, a collar part can be shape | molded in convex shape. When molding the toe part, the vertical movement of some needles is stopped, the remaining needles are moved, and the circular movement is switched to the circular movement. Reduce the number of needles that move up and down during the arc motion. By doing so, the toe portion can be made into a rounded knitted fabric.
The structure knitted only with the acrylic thread in the mouth part is folded back and sewn with the main body to form a mouth part with a good wearing feeling. By sewing the knitting end part of the toe part and the main body, it becomes a toe part that matches the shape of the finger.

(Comparative product 2)
The socks of the comparative product 2 constitute the entire sock by the pile knitting used in the comparative product 1, and the thread use, the molding method, and the like are the same as those of the comparative product 1.

  The clothing pressure at the arch is 1.1 kPa, and the clothing pressure at the instep is 1.5 kPa.

  FIG. 5 shows a graph of the clothing pressure of the example, the comparative product 1 and the comparative product 2.

(Measurement evaluation of arch height before and after walking)
The degree of arch depression before and after walking for a long time while wearing the socks of Examples, Comparative Product 1 and Comparative Product 2 was evaluated. We focused on the value of the arch height when the test subject was standing as an index representing the degree of arch depression. In general, a low arch height indicates that the arch is sinking. The test subjects were 20 healthy men whose foot sizes were 25.0 cm to 27.0 cm. The evaluation was performed according to the following procedure.
1) Measure the left and right arch heights of a subject standing in a standing position on a horizontal floor with no fatigue.
2) After that, wear socks and wear walking shoes.
3) Under an environment of 25 ° C. and 60%, the subject walks continuously on a treadmill set at 5.0 km / h for 2 hours.
4) After walking, measure the left and right arch heights of the subject standing on a horizontal floor.

  The average value of the left and right arch heights of 20 subjects obtained by the above measurement is shown in FIG.

  In the example, the arch height hardly changed before and after walking. In this embodiment, it is considered that the shape of the arch portion can be maintained because of the structure supporting the arch portion. Since the arch part continued to function as a cushion, the impact was alleviated, so foot fatigue after walking was small. Comparative product 1 had a low arch height after walking. This is because the clothing pressure at the arch is weak and the force to support the arch is weak, so the shape of the arch cannot be maintained. The function of the arch as a cushion deteriorates and the shock cannot be relieved, so the fatigue of the foot after walking was great. In addition, the instep part felt pain due to tightening. Comparative product 2 had a low arch height after walking. Since the comparative product 2 was not configured to support the arch part, the shape of the arch part could not be maintained. The function of the arch as a cushion deteriorated and the impact could not be alleviated, so the foot was tired after walking. In the structure with no tightening as in the comparative product 2, the arch height is reduced by 4 mm by walking, but in the embodiment, it is suppressed to 1 mm.

(Sensory test evaluation)
Using the socks of Examples, Comparative product 1 and Comparative product 2, sensory evaluation of the feeling of wearing in the high elastic region in the arch and the low elastic region in the instep was performed. The test subjects were 20 males who had the same arch height evaluation. A paired comparison (Thurston method) was performed on the example, the comparative product 1 and the comparative product 2 to give superiority to the wearing feeling.
The example was ranked first in sensory evaluation of both the feeling of wearing in the high elasticity region in the arch and the low elasticity region in the instep. Although there was a sense that the arch was supported, there was almost no feeling of tightening the instep. Therefore, it was comfortable to wear while getting a good fit. In Comparative Product 1, the wearing feeling in the high elasticity region in the arch was second in sensory evaluation, and the wearing feeling in the low elasticity region in the instep was third in sensory evaluation. The feeling of tightening the instep is greater than the feeling that the arch is supported. Therefore, although there was a fit, it was uncomfortable comfort. In Comparative Product 2, the feeling of wearing in the high elasticity region at the arch was third in sensory evaluation, and the feeling of wearing in the low elasticity region in the instep was second in sensory evaluation. There is no sense that the arch is supported, and the instep feeling is too weak. For this reason, a feeling of fit was not obtained, and it was an unpleasant comfort.

  It should be noted that the low elastic region portion of the sock of the embodiment may have any configuration as necessary as long as it is within the range of the elastic force. For example, a knitted structure having air permeability or a structure using fibers having hygroscopicity or quick drying may be used.

  In the above embodiment, the length of the sock up to the ankle has been described, but the length of the sock of the present invention is limited to this as long as the sock satisfies the configuration of the high elasticity region and the low elasticity region. It is not a thing.

1A is a view of the left foot viewed from the outside, FIG. 1B is a view of the left foot viewed from the inside, and FIG. 1C is a view of the left foot viewed from the bottom side. FIG. 2 is a diagram relating to an embodiment of the present invention, FIG. 2 (a) is a view of a sock for a left foot from the outside, FIG. 2 (b) is a view of a sock for a left foot from the inside, FIG. (C) is the figure which looked at the socks for left legs from the bottom face side. FIG. 3 is a view showing the above-described foot-type mannequin (left foot), FIG. 3 (a) is a schematic view seen from the back side of the foot, and FIG. 3 (b) is an enlarged view seen from the foot side. 3 (c) is an enlarged view of the instep viewed from the outside. FIG. 4 is a view showing the entire lower leg portion of the foot-type mannequin. FIG. 5 is a graph showing the clothing pressure between the instep part and the arch part in the example, comparative product 1 and comparative product 2. FIG. 6 is a graph showing measurement and evaluation of the arch height before and after walking in the example, the comparative product 1 and the comparative product 2.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Socks 10 High elasticity area | region 11 The part from the sole to the inner shell side 12 The part from the sole to the outer shell side 13 The part crossing the upper side of the rib 14 The side part 20 The low elasticity area 70 The rib 71 The talus 72 The boat 72a Rough surface of scaphoid 73 Cuneiform bone 74 Cubic bone 75 Thumb metatarsal bone 76 Little metatarsal bone 77 Recessed portion 80 Mannequin A Foot part B Thumb base part C Finger base part AB Inner longitudinal arch AC Outer longitudinal arch BC Lateral arch R1, R2 area T1 Pressure sensor mounting position on the arch T2 Pressure sensor mounting position on the instep W1, W2 Width

Claims (7)

  A sock including a high-elasticity region and a low-elasticity region, wherein a series of regions connecting at least a region crossing the arch and a region crossing over the ribs are configured by the high-elasticity region, and regions other than the high-elasticity region A sock comprising a low elastic region.   The portion from the sole to the instep side in the high elasticity region includes at least a part of the thumb metatarsal, a part of the wedge-shaped bone, and a part of the scaphoid bone. Socks.   The portion from the sole to the outer side in the high-elasticity region includes at least a part of the metatarsal bone of the little finger, a part of the leg bone and a part of the rib. Listed socks.   4. A1> A2, wherein A1 is a clothing pressure value in a high elastic region at the arch portion and A2 is a clothing pressure value in a low elastic region at an instep. Socks according to crab.   The clothing pressure in the high elastic region in the arch portion is 2.0 kPa or more and less than 20.0 kPa, and the clothing pressure in the low elasticity region in the instep portion is less than 20.0 kPa. The socks described.   In the high elasticity region, the thickness of the region from the portion crossing the upper side of the rib to the inner side and / or the outer side is thicker than the thickness of the other region. The sock according to any one of claims 1 to 6. A sock characterized in that tension is applied in a direction from the arch part of the sole to the upper side through the inner instep and to a direction from the arch part of the sole to the outer side to the upper part of the rib.

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