Lower limb clothing products

Abstract

To provide a product for fitting on a lower limb, in which a maximum calf perimeter part is hard to slip down, and an ankle part can easily pass a heel of a person when wearing / taking off so as to allow easy wearing / taking-off with a weak force while having compression.SOLUTION: A calf supporter 1 which is the product for fitting on a lower limb is made by insertion knitting that inserts an elastic yarn, such that a density of a calf upper part 2 becomes lower than the density of a maximum calf perimeter part 3. The supporter is made by insertion knitting that inserts the elastic yarn, such that the density of the calf upper part 2 and an ankle part 12 becomes lower than the density of the maximum calf perimeter part 3. A ratio of the density to an elastic yarn insertion amount of the ankle part 12 is larger than the ratio of the density to the elastic yarn insertion amount of the maximum calf perimeter part 3.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to products for wearing on the lower legs, such as calf supports, compression socks, and five-toed compression socks. [Background technology]

[0002] Socks are products worn on the lower legs, with round, tubular legs that are pulled up from the bottom against gravity. In particular, high socks that are pulled up to the knee are designed to be tightly fastened by a rubber part at the top of the calf to prevent the socks from slipping down from the thick calf to the thin ankle due to repeated bending of the foot (dorsiflexion and plantar flexion), such as when walking or running. However, depending on the thickness of the foot and physical constitution, the rubber part may dig into the skin, leaving a dent on the skin surface or causing redness and swelling.

[0003] Conventionally, as a general medical device, compression socks with stepwise pressure changes from strong, medium, to weak pressure from the ankle to the calf have been put to practical use in order to prevent swelling, improve blood flow, and promote blood circulation. Such compression socks change the pressure by knitting the ankle with a material that is more contractile than the calf, or by making the size of the stitches and the amount of elastic yarn inserted in the ankle smaller and the size of the stitches and the amount of elastic yarn inserted in the calf larger. For example, the pressure is set to 21 to 32 hPa for the ankle and 17 to 23 Pa for the maximum circumference of the calf.

[0004] Even when such compression socks are worn, the calf becomes thicker from the lower part toward the maximum circumference, so that the maximum circumference part of the calf is likely to slip downward.

[0005] In addition, when putting on and taking off compression socks, a large force is required when the ankle part, which has the smallest circumference and is set to the strongest pressure, passes over the heel and the front of the ankle of the person's foot. For this reason, conventional compression socks are difficult to put on and take off for elderly people and people with disabilities who have weak limbs and fingers and lack physical flexibility, as well as pregnant women and people with artificial joints who have difficulty bending forward beyond a certain angle, making them unfriendly products for not only healthy people but also those who really need compression socks, such as those with varicose veins, blood flow disorders, and lymphedema.

[0006] In particular, functional socks that push up the arch or support the ball of the foot, as well as tabi-style socks and five-toed socks, are extremely difficult to put on and take off because while the ankle is dorsiflexed into an L shape to fit each part of the foot, the compression section around the ankle, which is knitted tightly with a small stitch size, tightly grips the area around the ankle, including the protruding heel, due to the dorsiflexion.

[0007] Patent Document 1 proposes a sock or tubular lower limb supporter that applies higher pressure to the ankle than to other parts when worn, and that can reduce the force required to put on the sock. In this sock, a stitch-changing area is provided at the ankle between the front of the leg part and the front of the foot part, and the stitch-changing area is knitted with larger stitches than other areas, so that it can be stretched with less force and the force required to put on the sock can be reduced, but the pressure applied to the sock is weaker and the therapeutic effect is reduced accordingly. In addition, the large stitches in the stitch-changing area on the front side of the ankle act not only horizontally but also vertically, resulting in an unnatural sock that plantar flexes the ankle, and when worn, there is excess fabric on the front of the ankle, which causes the inconvenience of wrinkles. [Prior art documents] [Patent documents]

[0008] [Patent Document 1] JP 2015-145548 A Summary of the Invention [Problem to be solved by the invention]

[0009] The present invention has been made in consideration of the above-mentioned problems of the prior art, and aims to provide a product for wearing on the lower limbs that is unlikely to slip downward at the maximum circumference of the calf. Another aim is to provide a product for wearing on the lower limbs that has a compression function, but allows the ankle part to easily pass over the heel when putting on and taking off, and can be put on and taken off with little force. [Means for solving the problem]

[0010] In order to solve the above problems, the lower limb wearing product according to the first invention comprises: The knitted garment is characterized in that the stitch density at the upper part of the calf is smaller than the stitch density at the maximum circumference part of the calf.

[0011] The lower limb wearing product according to the second invention is The garment is characterized by being knitted with an insertion knitting method in which elastic yarn is inserted so that the stitch density at the upper part of the calf is smaller than the stitch density at the maximum circumference part of the calf.

[0012] In addition, the lower limb wearing product according to the third invention is The knit is knitted with an elastic yarn inserted so that the stitch count of the upper calf and ankle parts is smaller than the stitch count of the maximum calf circumference part. The ratio of the number of stitches to the amount of elastic yarn inserted in the ankle portion is larger than the ratio of the number of stitches to the amount of elastic yarn inserted in the calf maximum circumference portion.

[0013] In the first, second and third inventions, it is preferable that the stitch size on the rear side of the maximum calf circumference part is larger than the stitch size on the front side.

[0014] In the first, second and third aspects of the invention, it is preferable that the density of the inner and outer ankle parts of the ankle part is larger than the density of the other parts.

[0015] In the first, second and third inventions, it is preferable that the back side of the ankle portion is knitted with a stitch density larger than that of the front side and with a knitting pattern that stretches less in the wale direction than the knitting pattern constituting the front side.

[0016] In the first, second and third aspects of the invention, the rear side of the ankle part is preferably knitted with yarn having a lower coefficient of friction than the parts above it. Effect of the Invention

[0017] According to the first invention, the stitch density of the upper calf is smaller than that of the maximum calf circumference, so that when worn, the stitches of the maximum calf circumference are stretched horizontally to a greater extent, and the stitches of the upper calf are influenced by this and pulled in the wale direction (vertical direction), stretching horizontally less than the maximum calf circumference. from The stitches are naturally adjusted to fit the larger part of the calf circumference that gets larger as it goes downwards, making it less likely to slip.

[0018] According to the second invention, the knitted garment is knitted with an insertion knitting method in which an elastic yarn is inserted so that the stitch density of the upper calf is smaller than that of the maximum calf circumference part. Therefore, when worn, the stitches of the maximum calf circumference part are stretched horizontally to a large extent, and the stitches of the upper calf part are influenced by this and pulled in the wale direction (vertical direction), stretching horizontally less than the maximum calf circumference part. from The stitches are naturally adjusted to fit the part of the calf that gets larger as it moves downward toward the maximum circumference, making it difficult to slip down. Since it is not tightly fastened with rubber or the like, there is little pressure and it is difficult to slip down.

[0019] According to the third invention, the garment is knitted using insertion knitting with elastic yarn inserted so that the stitch count in the upper calf and ankle areas is smaller than the stitch count in the maximum calf circumference area, and the ratio of the stitch count to the amount of elastic yarn inserted in the ankle area is larger than the ratio of the stitch count to the amount of elastic yarn inserted in the maximum calf circumference area.This gives the ankle area great lateral stretch and provides a compression function, while allowing the ankle area to easily pass over a person's heel when putting on and taking off the garment, and allows the garment to be put on and taken off with little force. [Brief description of the drawings]

[0020] [Figure 1]FIG. 1A is a side view showing the calf support according to the first embodiment of the present invention and the leg of a human body; FIG. 1B is a diagram showing an example of the density and amount of rubber inserted in each part of the calf support; and FIG. 1C is a diagram showing another example of the density and amount of rubber inserted in each part of the calf support. [Diagram 2] FIG. 2 is an enlarged view showing the knitting structure of the calf support of FIG. 1. [Diagram 3] FIG. 1( a ) shows the relationship between the density and the elongation when the amount of rubber inserted is constant, and FIG. 1( b ) shows the relationship between the amount of rubber inserted and the elongation when the amount of rubber inserted is constant. [Figure 4] FIG. 4 is a side view showing a compression sock according to a second embodiment of the present invention. [Diagram 5] FIG. 11 is a side view showing a compression sock according to a third embodiment of the present invention. [Figure 6] An enlarged view showing the knitting structure of the rear ankle part of the compression sock of Figure 5. [Figure 7] 6 is a side view showing the compression sock of FIG. 5 in the middle of being put on. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0021] Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.

[0022] FIG. 1(a) shows a calf supporter (also called a calf) 1, which is a lower limb wear product according to the first embodiment of the present invention, in association with a person's lower limb. The calf supporter 1 has a calf upper part 2 covering the upper part of the person's calf A, a calf maximum circumference part 3 covering the maximum circumference part of the calf A, a calf lower part 4 covering the lower part of the calf A, a shin part 5 covering the shin B, and an ankle minimum circumference part 6 covering the minimum circumference part of the ankle C. An opening part 11 is knitted above the calf upper part 2, and an ankle part 12 is knitted below the ankle minimum circumference part 6. The upper end of the opening part 11 and the lower end of the ankle part 12 are open. A calf part 13 is formed from the calf upper part 2 through the calf maximum circumference part 3 to the calf lower part 4. The calf supporter 1 is knitted into a tubular shape by a circular knitting machine. In this embodiment, the ankle portion 12 is the area below and including the minimum ankle circumference portion 6, but it may be the area above and below the minimum ankle circumference portion 6. The lower limb wear product of the present invention including the calf support 1 can be knitted not only by a circular knitting machine but also by a flat knitting machine.

[0023] Figure 2 shows the knitting structure of the calf support 1. The knitting structure of the calf support 1 is so-called insertion knitting, in which an elastic yarn (also called "rubber yarn") 17 is inserted into a flat knitting structure in which a front yarn 15 and a back yarn 16 are added and fed. The front yarn 15 of the ground yarn can be stretch polyester, and the back yarn 16 can be a single covered yarn (scy) in which a polyurethane yarn (spandex yarn) is wrapped once with a polyester yarn to cover it. The elastic yarn 17 can be a double covered yarn (dcy) in which a polyurethane yarn is wrapped twice in opposite directions with a polyester yarn to cover it.

[0024] According to the Human Body Measurement Database (source: Artificial Intelligence Research Center, https: / / www.airc.aist.go.jp / dhrt / 91-92 / data / list.html), if the maximum calf circumference of a human leg is 100, then the minimum ankle circumference is 60.5. The circumference of the upper calf was calculated as 88.4 from the ratio of the circumference of the upper calf to the maximum calf circumference of a mannequin (manufactured by Nanasai Co., Ltd.). Based on this value, the upper calf 2, maximum calf circumference part 3, and minimum ankle circumference part 6 of calf support 1 are knitted with different stitch counts and amounts of elastic yarn inserted (hereinafter referred to as "rubber insertion amount") as shown in Table 1.

[0025] [Table 1]

[0026] When knitting the calf support 1 using a circular knitting machine, the stitch density and elastic feed settings of the circular knitting machine when knitting the maximum calf circumference part 3 are used as a reference, and the stitch density and elastic feed settings of the circular knitting machine when knitting the upper calf part 2 and the minimum ankle circumference part 6 are set to the ratios shown in Table 1.

[0027] Specifically, when the calf support 1 is knitted from the opening 11 by a circular knitting machine, as shown in Fig. 1(b), the stitch count from the upper calf 2 to the maximum calf circumference 3 increases stepwise from 90 to 100 every one or several courses, and the amount of rubber inserted similarly increases stepwise from 95 to 100 every one or several courses. The stitch count from the maximum calf circumference 3 to the minimum ankle circumference 6 decreases stepwise from 100 to 70 every one or several courses, and the amount of rubber inserted similarly decreases stepwise from 100 to 50 every one or several courses.

[0028] As shown in Fig. 1(c), a knitted section may be knitted with a stitch density of 100 and an elastic insertion amount of 100 from the upper part of the maximum calf circumference part 3 to the lower part of the calf 4, for example, around the maximum calf circumference part 3. Also, the calf part 5 may be knitted with a constant stitch density and elastic insertion amount.

[0029] The stitch density indicates the size of the stitch loop as shown in Fig. 2, the larger the stitch density, the coarser the stitch and the greater the amount of lateral stretch, and the smaller the stitch density, the denser the stitch and the less the amount of lateral stretch. In Fig. 2, the stitch density N3 of the calf portion 13 is 100, while the stitch density N2 of the calf upper portion 2 and the opening portion 11 is 90, the stitch density N5 of the shin portion 5 is 85, and the stitch density N6 of the ankle minimum circumference portion 6 and the ankle portion 12 is 70. The amount of rubber inserted indicates the amount of rubber thread fed, the larger the amount of rubber inserted, the looser the fit, and the smaller the amount of rubber inserted, the tighter the fit.

[0030] Figure 3(a) shows the change in elongation dimension with respect to the change in the density when the amount of inserted rubber is kept constant (350). Figure 3(a) shows that the elongation dimension increases as the density increases. Figure 3(b) shows the change in elongation dimension with respect to the change in the amount of inserted rubber when the density is kept constant (180). Figure 3(b) shows that the elongation dimension increases as the amount of inserted rubber increases, but once the amount of inserted rubber exceeds a certain value, the lateral elongation of the fabric is limited by the density, and it will no longer elongate.

[0031] In Table 1, the ratio of the stitch length N to the circumference H of a person's leg is called the fabric allowance N. H The ratio of the amount of rubber inserted E to the circumference H of a person's leg is the rubber shrinkage rate E H The fabric allowance rate N at the upper calf 2 H is the fabric allowance rate N at the maximum calf circumference 3 H Since 102 is almost the same as 100, when the calf supporter 1 is worn, the upper calf part 2 has about the same amount of fabric space as the maximum calf circumference part 3. Therefore, when the upper calf part 2 tries to slide down from its original position toward the maximum calf circumference part 3 (downward), the larger circumference prevents it from stretching further laterally, and so it does not slide downward.

[0032] When worn, the stitches of the maximum calf circumference part 3 are stretched widely horizontally, and the stitches of the upper calf part 2 are influenced by this and pulled in the wale direction (vertical direction), stretching horizontally less than the maximum calf circumference part 3. As a result, the stitches are naturally adjusted so that they stick to the part that gets larger as it goes downward from the upper calf part 2 to the maximum calf circumference part 3, making it difficult to slip off. Since it is not tightly fastened by rubber or the like, there is little pressure and it is difficult to slip off downward.

[0033] The critical value for horizontal stretch of the stitch N is greater than the circumference H, and there is some margin for horizontal stretch of the stitch N, but in a knitted fabric in which Ω (omega)-shaped loops overlap and repeat, the closer to the critical value the less stretchable it becomes (see 600-800 in Fig. 3(b)). Also, when the maximum calf circumference part 3 stretches horizontally, it is pulled and the loops of the upper calf part 2 are also stretched vertically, but because the stitch density is small, the stitches are naturally adjusted to stick to the part that gets larger as it goes downward, as mentioned above, and are less likely to slip.

[0034] In addition, the upper calf 2 has a rubber shrinkage rate E H is 107, which is larger than the 100 of the maximum circumference of the calf 3, so the tightness is loose. Therefore, unlike conventional knee-high socks where the rubber part at the top of the calf is tightly fastened to prevent the socks from slipping down, the rubber part does not dig into the skin, leaving indentations on the skin surface or causing red swelling.

[0035] In Table 1, the fabric allowance rate N at the ankle minimum circumference part 6 H is 116, and the fabric allowance rate N at the maximum calf circumference part 3 H The minimum ankle circumference part 6 has a sufficient degree of lateral stretch, and when the calf supporter 1 is worn, it easily passes through the maximum foot circumference part (also called the "short heel") E between the rear of the heel and the front of the ankle, making it easy to wear without exerting force. H The rubber shrinkage rate E at the maximum calf circumference part 3 is 82.6. H Since it is smaller than 100, it is very tight.

[0036] The difficulty of putting on conventional compression socks is due to the lack of lateral stretch at the ankle of the socks compared to the maximum circumference of the human foot (short heel). In fact, the minimum circumference 6 of the ankle of a typical conventional compression sock is 12 cm when laid flat (circumference when no force is applied due to wearing, etc.), and 32 cm when stretched to the maximum. This is not enough, or it is only possible to pass through due to deformation of the heel, etc., caused by strong force, although there are individual differences, and it is difficult to put on due to the posture when wearing, the heel being pushed out by the dorsiflexion of the foot, and the heel being wet. In contrast, in the present invention, although the laying dimension is not much different at 14 cm, the maximum tension dimension is 44 cm, which indicates that the maximum foot circumference E can easily pass through. Here, despite the large stitch size and the large maximum tension dimension, the laying dimension is the same as that of a typical conventional compression sock because the elastic thread, specifically the amount of rubber inserted, is narrowed down and the sock is tightly fastened with the rubber thread.

[0037] When the stitch size is constant, if the amount of rubber inserted is large, the rubber will not be tight when stretched laterally, and if the amount of rubber inserted is small, the rubber will be tight when stretched laterally. Also, when the amount of rubber inserted is constant, if the stitch size is large, the rubber will stretch more laterally, and if the stitch size is small, the rubber will stretch less laterally. Therefore, the tightness of the calf support 1 when worn depends on the rubber contraction rate E. H If the size is small, the fabric will be tight and the fabric allowance rate N H Therefore, in Table 1, the rubber shrinkage rate (E H ) is the inverse of the fabric allowance rate (N H ) ratio (1 / (E H / 100)×1 / (N H / 100)×100=H 2The compression level is calculated by dividing the compression level by the number of layers (1 / NE×100). Table 1 shows that the upper calf part 2 (fabric allowance: 102, rubber shrinkage: 107) is not easily dislodged even though the rubber does not dig into the skin, and the ankle minimum circumference part 6 (fabric allowance: 116, rubber shrinkage: 82.6) has a large lateral stretch and is easily passed through the foot maximum circumference part E when worn, but is tightly fastened with rubber thread. In other words, the compression level increases in the order of upper calf part 2 (compression level: 91.4), maximum calf circumference part 3 (compression level: 100), and minimum ankle circumference part 6 (compression level: 104.6), demonstrating that the compression function is being fulfilled.

[0038] In Table 1, the ratio (E / Nx100) of the amount of rubber inserted (E) to the stitch size (N) increases in the order of 6 at the ankle's minimum circumference, 3 at the calf's maximum circumference, and 2 at the upper calf, indicating that the tightness becomes looser.

[0039] In addition, in Table 1, the ratio (N / Ex100) of the stitch size (N) to the amount of rubber inserted (E) decreases in the order of minimum ankle circumference 6, maximum calf circumference 3, and upper calf circumference 2, indicating that not only is the ankle circumference part 6 less likely to slip down, but the ankle circumference part 6 has greater lateral stretch and therefore easier to pass through the foot circumference part E when put on.

[0040] 4 shows a compression sock 20, which is a lower limb wearing product according to the second embodiment of the present invention. The compression sock 20 has a calf upper part 2, a calf maximum circumference part 3, a calf lower part 4, a shin part 5, and an ankle minimum circumference part 6, as with the calf supporter 1 of the first embodiment, as well as an opening part 11, an ankle part 12, and a calf part 13, and further has a heel part 7, a foot part 8, and a toe part 9. The knitting structure, stitch count, and rubber insertion amount of the calf upper part 2, the calf maximum circumference part 3, the calf lower part 4, the shin part 5, and the ankle minimum circumference part 6 are the same as those of the first embodiment, so a description thereof will be omitted. The heel part 7, the foot part 8, and the toe part 9 are knitted in the same manner as conventional general socks.

[0041] In the compression sock 20 of the second embodiment, the stitch count of the rear calf portion 13b in the knitting portion of a predetermined course including the maximum calf circumference portion 3 is larger than the stitch count of the front calf portion 13a. In other words, when knitting the calf portion 13 including the maximum calf circumference portion 3, if the center position of the front calf portion 13a is 0°, the front calf portion 13a from 0° to 90° in the course direction is knitted with a stitch count of 100, the rear calf portion 13b from 90° to 270° is increased to a stitch count of 110, and the front calf portion 13a from 270° to 360° is returned to a stitch count of 100. The position 90° at which the stitch count is increased may be shifted by one or several cords, such as 95°, 100°, 105°, 110°, . . . This allows the posterior calf portion 13b to stretch laterally in response to the raised shape of the gastrocnemius muscle, and the structure conforms to the shape of the leg, making it less likely to slip off. It also reduces the feeling of pressure when the gastrocnemius muscle contracts.

[0042] In addition, in the second embodiment of the pressure sock 20, the stitch count of the inner and outer malleolithic parts 12ai, 12ao of the ankle part 12 including the ankle minimum circumference part 6 is larger than the stitch count of the other parts. That is, in the knitting of the ankle part 12, if the center position of the front side of the ankle part 12 is 0°, the stitch count is increased from 70 to 80 at the outer malleolithic parts 12ao before and after the 90° position and the inner malleolithic parts 12ai before and after the 270° position. This increases the lateral stretch amount of the protruding inner and outer malleolithic parts 12ai, 12ao, and the structure is made to follow the shape of the leg including the protruding malleolithic parts F, so that it is difficult to slip down. In particular, in the pressure sock 20 having the heel part 7, the foot part 8, and the toe part 9, this part has the effect of stopping the force that pulls down the part above the ankle minimum circumference part 6 due to repeated dorsiflexion and plantar flexion of the ankle. It is also possible to reduce the feeling of pressure caused by swelling of the inner and outer ankles F.

[0043] 5 shows a compression sock 30, which is a lower limb wearing product according to the third embodiment of the present invention. The compression sock 30 has a calf upper part 2, a calf maximum circumference part 3, a calf lower part 4, a shin part 5, and an ankle minimum circumference part 6, as with the calf supporter 1 of the first embodiment, and also has an opening part 11, an ankle part 12, a calf part 13, a heel part 7, a foot part 8, and a toe part 9. The knitting structure, stitch count, and rubber insertion amount of the calf upper part 2, the calf maximum circumference part 3, the calf lower part 4, the shin part 5, and the ankle minimum circumference part 6 are the same as those of the first embodiment, so a description thereof will be omitted. The heel part 7, the foot part 8, and the toe part 9 are knitted in the same manner as conventional general socks.

[0044] In the compression sock 30 of the third embodiment, the stitch count of the rear side of the ankle part 12 including the minimum ankle circumference part 6 is larger than that of the front side, and the knitting method in which the stretch in the wale direction is smaller than that of the knitting method constituting the front side, for example, tuck knitting or float knitting, is used. That is, in knitting the ankle part 12, if the center position of the front side of the ankle part 12 is 0°, the stitch count of the ankle front part 12b from 0° to 120° in the course direction is 70, the stitch count of the ankle rear part 12c from 120° to 240° is increased to 80, and the stitch count of the ankle front part 12b from 240° to 360° is returned to 70. As a result, when the maximum foot circumference part E passes through the ankle part 12, the rear ankle part 12c of the ankle part 12 stretches well, and is knitted in a manner that suppresses vertical stretching, so that the part of the maximum foot circumference part E corresponding to the heel D does not stretch vertically and horizontally to wrap around the heel D, and the front and rear parts of the heel D do not become too tight and prevent the wearer from moving forward.As a result, the compression socks 30 can be easily put on without exerting any force.

[0045] Tuck knitting is a knitting structure in which stitches are not made when knitting a course, but are held on the knitting needles, and stitches are made together when knitting the following course. The tuck knitting shown in Fig. 6(a) is a so-called 1 x 1 tuck knitting in which a tuck 18 is made for one course per wale when knitting a course. The tuck knitting shown in Fig. 6(b) is a so-called pique tuck knitting in which a tuck 18 is made for one course per wale when knitting a course, and each tuck 18 is between the tucks 18 of the previous course. The 1 x 1 tuck knitting in Fig. 6(a) is less prone to vertical stretching than the pique tuck knitting in Fig. 6(b).

[0046] In this way, in the third embodiment of the compression sock 30, the stitch count of the ankle rear part 12c of the ankle part 12 including the ankle minimum circumference part 6 is larger than that of the ankle front part 12b, and since it is knitted with tuck knitting, it is easy to stretch in the course direction but difficult to stretch in the wale direction. Therefore, as shown in Fig. 7, when the compression sock 30 is put on, when the thinnest ankle part 12 of the compression sock 30 passes through the foot maximum circumference part E from the front part of the ankle C to the rear part of the heel D of a person, the ankle rear part 12c of the ankle part 12 with the larger stitch count stretches well horizontally and does not stretch vertically, so that the ankle rear part 12c of the ankle part 12 acts as a so-called "shoe horn" to slide the heel D into the heel part 7, and the compression sock 30 can be easily swept without exerting force.

[0047] The ankle back part 12c has the same dimensions and pressure when worn as the ankle front part 12b, but since its vertical stretch in the wale direction when putting on and taking off is smaller than other parts, it plays the role of a shoe horn. The ankle back part 12c is not narrowed, so the maximum foot circumference part (short heel) E can be easily passed through due to the horizontal stretch of the fabric, but since it is tightly fastened by the narrowed rubber thread, it stretches but also has a large contraction force, and the part of the maximum foot circumference part E corresponding to the heel D stretches vertically and horizontally to wrap around the heel D, and the front and rear parts of the heel D are tightly fastened, solving the problem that the bulging heel part cannot move forward. It is similar to how shoes that can be worn comfortably without any discomfort once the heel is put in (once the shoes are put on), but using a shoe horn when putting them on makes them easier to put on.

[0048] To make the shoehorn slippery over the material inside the shoe, the "part through which the heel passes" of the compression socks 3, for example the rear ankle part 12c which corresponds to the shoehorn, can be made of a material with a lower coefficient of friction than the parts above it, such as the upper calf part and the maximum circumference of the calf, for example polyester multifilament or fluoro fiber, making it easier to put on. For example, the "part through which the heel passes" is not limited to the rear ankle part 12c but can also include the cylindrical parts at the bottom of the ankle part 12 and the shin part 5, and a material with a lower coefficient of friction can be used for this part.

[0049] The compression sock 20 of the second embodiment and the compression sock 30 of the third embodiment can also be applied to five-toed compression socks in which the toe portion 9 has five toes.

[0050] The present invention is not limited to the above-described embodiments, and can be modified or altered within the scope of the invention as defined in the claims. [Explanation of symbols]

[0051] 1. Calf support 2. Upper calf 3…Maximum circumference of calf 4. Lower calf 5. Shin 6…Ankle minimum circumference 7…Heel 8…Foot part 9…Toe 11... Opening 12...Ankle 12a...Ankle 12b...Front of ankle 12c…Back of ankle 13...Calf area 13a…Front calf 13b...Back of calf 15…Outer thread 16...Back thread 17…Rubber thread 18…Tuck 20…Compression socks 30…Compression socks A…calf B…shin C…Ankle D...heel E: Maximum foot circumference F...Ankle

Claims

1. A product for wearing on the lower limbs is knitted with insertion knitting in which elastic yarn is inserted so that the stitch count in the upper part of the calf is smaller than the stitch count in the maximum circumference part of the calf, and the ratio of the stitch count to the amount of elastic yarn inserted in the upper part of the calf is smaller than the ratio of the stitch count to the amount of elastic yarn inserted in the maximum circumference part of the calf.

2. The knit is knitted with an elastic yarn inserted so that the stitch size at the ankle is smaller than the stitch size at the maximum circumference of the calf. The product for wearing on the lower limbs according to claim 1, characterized in that the ratio of the stitch count to the amount of elastic yarn inserted in the ankle portion is larger than the ratio of the stitch count to the amount of elastic yarn inserted in the calf maximum circumference portion.

3. 3. The product for wearing on the lower limbs according to claim 1 or 2, characterized in that the stitching on the rear side of the maximum circumference part of the calf is larger than the stitching on the front side.

4. 4. The product for wearing on the lower limbs according to claim 1, wherein the stitching of the inner and outer ankle parts is greater than that of the other parts of the ankle part.

5. A product for wearing on the lower limbs according to any one of claims 1 to 4, characterized in that the back side of the ankle portion is knitted with a stitch density larger than that of the front side and with a smaller stretch in the wale direction than the stitch density of the front side.

6. 6. The product for wearing on the lower limbs according to claim 1, wherein the rear side of the ankle portion is knitted with yarn having a lower coefficient of friction than the portion above the ankle portion.

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