JP5547518B2 - Leg wear - Google Patents

Description

  The present invention relates to legwear, and more specifically, can reduce the pressure in steps from the ankle upward regardless of the wearer's body shape.

  Conventionally, as leg wear for improving the blood circulation of legs, for example, Japanese Utility Model Laid-Open No. 5-25044 (Patent Document 1) discloses a long distance runner that is designed to have a strong pressing force (pressure) toward the lower side of the legs. Stockings are disclosed. As shown in FIG. 7, the stocking 1 is composed of a hip part 2 covering the waist and a leg part 3 covering the thigh and lower leg parts, and the hip part 2 and the leg part 3 are circularly knitted as an integral structure. Yes. In addition, point b of the Achilles tendon part shown in FIG. 8, point c of the thickest part of the lower leg, point b1 located between the points c and b, and d of the uneven cranial head located slightly toe from the knee The wearing pressure at point f, 15 cm above the knee, and point g at the crotch 10 cm is set between curve A and curve B shown in FIG.

  The stocking 1 maximizes the pressure around the ankle and gradually decreases the pressure upward from the ankle, thereby circulating blood stagnating in the leg veins to the heart and supplying fresh blood to the muscles. It is supposed to be possible. On the other hand, some wearers (especially athletes) have lower leg muscles developed from other parts or thigh muscles developed from other parts. The balance of part thickness may be different from the standard. However, in the integrally knitted stocking 1 as described above, there is a case where the wearing pressure cannot be reduced stepwise from the ankle upward when the thickness balance between the lower leg and the thigh is different. .

Japanese Utility Model Publication No. 5-25044

  The present invention has been made in view of the above problems, and even if there is a difference in the wearer's body shape, such as a difference in thickness balance between the lower leg and the thigh, the pressure on the leg wear is directed upward from the ankle. The problem is that it can be reduced step by step.

In order to solve the above problems, the present invention is a leg wear comprising a crus that covers from the ankle to the knee, and a thigh that covers from the knee to the base of the leg,
A strong power knitted fabric and a weak power knitted fabric are arranged in the circumferential direction at any position in the length direction from the ankle to the base of the leg, and the ratio of the circumferential length of the strong power knitted fabric to the total circumferential length is The pressure is reduced from the ankle position toward the base of the leg, and the wearing pressure is reduced from the ankle position toward the base of the leg,
The strong power knitted fabric has a 30% elongation stress of 0.5 to 0.7 N by JIS L 1018 cut strip method , and the weak power knitted fabric has a 30% elongation stress of 0.2 to 0.2 by JIS L 1018 cut strip method. It is a 0.4N,
In the crus, the strong power knitted fabric is continuously arranged in a region covering at least the small saphenous vein from the ankle position to the knee position, and the circumference of the strong power knitted fabric in the cross-section in the width direction of the crus And the ratio of the perimeter of the weak power knitted fabric [(perimeter of the strong power knitted fabric) :( perimeter of the weak power knitted fabric)] within the range of 9: 1 to 5: 5 And
In the thigh, the strong power knitted fabric is continuously arranged from the knee position to the base position of the leg, and the circumference of the strong power knitted fabric and the circumference of the weak power knitted fabric in the cross section in the width direction of the thigh the ratio of the length the perimeter of (the strong peripheral length of the power knitted fabric) :( the weak power knitted fabric) in a non-worn condition 5: 5 to 1: 9 is in the range of characterized in that are Leg wear is provided.

  As described above, in the present invention, a strong power knitted fabric having a 30% elongation stress of 0.5 to 0.7 N, preferably 0.55 to 0.65 N according to JIS L 1018 cut strip method, and JIS L 1018 cut strip. Leg wear is formed by combining with a weak power knitted fabric having a 30% elongation stress of 0.2 to 0.4 N, preferably 0.25 to 0.35 N. Further, the ratio of the circumference of the strong power knitted fabric and the circumference of the weak power knitted fabric in the cross section in the width direction of the lower leg is 9: 1 to 5: 5, preferably 8: 2 to 5: in a non-wearing state. The ratio of the circumference of the strong power knitted fabric and the circumference of the weak power knitted fabric in the cross section in the width direction of the thigh is 5: 5 to 1: 9 in a non-wearing state, preferably Within the range of 5: 5 to 2: 8, the ratio of the circumference of the strong power knitted fabric to the entire circumference is reduced from the ankle position to the knee position and from the knee position to the base position of the leg. In other words, the ratio of the circumference of the weak power knitted fabric to the entire circumference is increased from the ankle position to the knee position and from the knee position to the base position of the leg.

  According to the above configuration, even if the balance between the thickness of the lower leg of the wearer and the thickness of the thigh is different, it is possible to reliably reduce the wearing pressure from the ankle to the base of the leg. It is possible to obtain a stepped compression structure that is not easily affected by the body shape. Especially in the lower leg, a strong power knitted fabric is placed at least in the area covering the small saphenous vein, so that the amount of venous return can be further increased. Can be removed and reduced at an early stage. Since the small saphenous vein is a vein that starts from the outer edge near the ankle on the back side of the lower leg and merges with the inferior knee vein, the strong power knitted fabric is placed on the rear side of the lower leg so as to cover the area. It is important to place on the side. In addition, the 30% elongation stress of the strong power knitted fabric and the circumference ratio of the strong power knitted fabric and the weak power knitted fabric in the crus and thighs are maintained within the above range to ensure easy attachment / detachment. be able to.

  The ratio of the circumference of the strong power knitted fabric with respect to the entire circumference in the cross section in the width direction of the crus is substantially constant from the ankle position to the middle position of the crus, and the middle of the crus It is preferable to decrease from the position toward the knee position.

  In the present invention, as described above, the strong power knitted fabric of the lower leg is continuously arranged from the ankle position to the knee position on the rear side of the lower leg where the small saphenous vein passes, The knitted fabric is also arranged continuously from the knee position to the base of the leg. However, the strong power knitted fabric of the lower leg and the strong power knitted fabric of the thigh do not necessarily have to be continuous, and the strong power knitted fabric of the thigh is the front side, the rear side, and the outer side of the thigh. It may be arranged on any of the inner side surfaces.

  On the other hand, it is also preferable that the strong power knitted fabric of the thigh is continuous with the strong power knitted fabric of the crus and extends to the outer surface of the thigh. In addition, a hip portion covering from the base of the leg to the waist is provided, and the strong power knitted fabric is continuously disposed on the strong power knitted fabric of the thigh and extends to the upper end of the hip portion. It is also preferable that they are present.

  As described above, when the strong power knitted fabric of the thigh is continued to the strong power knitted fabric of the crus and extended to the outer surface of the thigh, the strong power is continued to the base of the leg. The knitted fabric can lift and stably hold the muscles on the rear side of the lower leg and improve the design. In addition, as described above, a strong power knitted fabric connected to the strong power knitted fabric of the thigh is also arranged in the hip portion covering from the base of the leg to the waist, and the strong power knitted fabric is extended to the upper end of the hip portion. By extending it, the waist can be supported and leg wear can be prevented from sliding down.

  The type of yarn used for the knitted structure and knitting of the strong power knitted fabric and the weak power knitted fabric is not particularly limited as long as 30% elongation stress can be obtained by the JIS L 1018 cut strip method. However, while the strong power knitted fabric is knitted by Russell knitting using polyurethane elastic yarn and nylon yarn, the weak power knitted fabric is tempered by knitting yarn with polyester yarn and splicing yarn as polyurethane elastic yarn. It is preferable that the strong power knitted fabric and the weak power knitted fabric are knitted and integrated by sewing. The polyurethane elastic yarn is not particularly limited as long as it is an elastic yarn containing polyurethane, but a bare yarn (bare yarn) that is a polyurethane yarn as it is, a single covering yarn in which a nylon yarn is wound around a core yarn made of polyurethane yarn. Are preferable, and bare yarn (bare yarn) is particularly preferable.

  The strong power knitted fabric and the weak power knitted fabric cut into the required shape are joined and integrated by sewing, and the power of the knitted fabric is changed clearly from the sewing position, so that the stepwise pressure not affected by the difference in body shape Setting can be done effectively.

  According to the present invention, even if the thickness balance between the lower leg and the thigh is different depending on the wearer, 20 to 35 hPa near the ankle position, It is possible to obtain a pressure of 15 to 25 hPa near the maximum calf diameter position and about 5 to 15 hPa near the thigh circumference position between the knee position of the thigh and the base of the leg.

  The legwear of the present invention is preferably a tight that is not provided with a foot portion that covers the tip from the ankle and is worn during exercise. However, it may be tights worn not only for exercise but also on a daily basis. Moreover, the tights provided with the foot part which covers from an ankle to the front-end | tip may be sufficient, and it is good also as long stockings without a hip part.

  As described above, in the present invention, a strong power knitted fabric having a 30% elongation stress of 0.5 to 0.7 N according to the JIS L 1018 cut strip method and the 30% elongation stress is 0.2 to 0.4 N. Leg wear is formed by combining with weak power knitted fabric. Further, the ratio of the circumference of the strong power knitted fabric and the circumference of the weak power knitted fabric in the cross section in the width direction of the lower leg is 9: 1 to 5: 5 in a non-wearing state, and the strong power in the cross section in the width direction of the thigh The ratio of the circumference of the knitted fabric to the circumference of the weak power knitted fabric is within a range of 5: 5 to 1: 9 when not worn, and the ratio of the circumference of the strong power knitted fabric to the total circumference is from the ankle position to the knee The position is decreased from the knee position to the base position of the leg. With this configuration, even if the balance between the thickness of the lower leg of the wearer and the thickness of the thigh is different, it is possible to reliably reduce the wearing pressure from the ankle to the base of the leg. It is possible to obtain a stepped compression structure that is not easily affected by the above. Especially in the lower leg, a strong power knitted fabric is placed at least in the area covering the small saphenous vein, so that the amount of venous return can be further increased. Can be removed and reduced at an early stage. In addition, the 30% elongation stress of the strong power knitted fabric and the circumference ratio of the strong power knitted fabric and the weak power knitted fabric in the crus and thighs are maintained within the above range to ensure easy attachment / detachment. be able to.

It is the schematic perspective view which shows the legware of this embodiment, (A) is the figure seen from the front side, (B) is the figure seen from the rear surface side. (A), (B) is the schematic perspective view which looked at the legware of this embodiment from the side. It is the expanded view which decomposed | disassembled each knitted fabric of legware. It is a figure which shows the measurement point of the adhesion pressure in an Example. It is a figure which shows the adhesion pressure distribution in an Example. It is a figure which shows the adhesion pressure distribution in a comparative example. It is a figure which shows a prior art example. It is a figure which shows a prior art example.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 3 show an embodiment of the present invention. The legwear of the present embodiment is a tights 10 worn during exercise such as baseball and athletics, and as shown in FIGS. 1 and 2, the tights 10 are formed from a crus 12 that covers an ankle to a knee and a knee. The leg part 11 which consists of the thigh part 13 which covers to the base of the leg, and the hip part 15 which covers from the base of the leg to the waist part are comprised. At the lower end of the leg portion 11, a hem portion 14 formed by bag knitting is provided, and at the upper end of the hip portion 15, a wear mouth portion 16 formed by bag knitting is provided, and in the tights 10 of this embodiment, the tip from the ankle to the tip There is no foot part to cover. In addition, although the tights 10 of this embodiment are for men, they can also be for women or unisex.

The tights 10 have a high power knitted fabric 20 having a 30% elongation stress of 0.5 to 0.7 N (0.65 N in this embodiment) according to a JIS L 1018 cut strip method, and a 30% elongation according to a JIS L 1018 cut strip method. It consists of a weak power knitted fabric 21 having a stress of 0.2 to 0.4 N (0.34 N in this embodiment). Specifically, as shown in FIG. 3, a pair of front body weak power knitted fabrics 21a, a front center weak power knitted fabric 21b, and a pair of back body weak power knitted fabrics obtained by cutting the weak power knitted fabric 21 into a required shape. The tights 10 are formed by integrating 21c and a pair of strong power knitted fabrics 20 having a required shape by sewing.
The front body weak power knitted fabric 21a is a member disposed on the front side of the leg portion 11 and the hip portion 15, and the front center weak power knitted fabric 21b is disposed between the pair of front body weak power knitted fabrics 21a to cover the local area. It is a member to do. The back body weak power knitted fabric 21c is a member disposed on the rear side of the leg portion 11 and the hip portion 15, and the strong power knitted fabric 20 is adjacent to the front body weak power knitted fabric 21a and the back body weak power knitted fabric 21c. It is a member to arrange.

  The front body weak power knitted fabric 21a and the front center weak power knitted fabric 21b are joined by sewing at the sewing line 30, and the pair of rear body weak power knitted fabrics 21c are joined by sewing at the sewing line 31. Is done. The front body weak power knitted fabric 21a and the strong power knitted fabric 20 are joined by sewing at the sewing line 32, and the rear body weak power knitted fabric 21c and the strong power knitted fabric by sewing at the sewing line 33. 20 is joined. Furthermore, the front body weak power knitted fabric 21a and the back body weak power knitted fabric 21c are joined by sewing at the sewing line 34. Thus, the tights 10 can be formed by sewing each knitted fabric.

  The strong power knitted fabric 20 of the present embodiment includes a crus strong power knitted fabric portion 20a, a thigh strong power knitted fabric portion 20b, and a hip strong knitted fabric portion 20c. 20a, the thigh strong power knitted fabric portion 20b, and the hip strong power knitted fabric portion 20c are continuous to form one strong power knitted fabric 20. However, the lower thigh strong power knitted fabric portion 20a, the thigh strong power knitted fabric portion 20b, and the hip strong power knitted fabric portion 20c may be arranged as separate strong power knitted fabrics without being continuous.

In the crus part 12, the crus strong power knitted fabric part 20a is continuously arranged over the entire length from the ankle position to the knee position, and the entire rear surface side of the crus part including the small saphenous vein V is formed. It is covered with a crus strong power knitted fabric portion 20a.
In a non-wearing state, the circumference S of the crus strong power knitted fabric portion 20a in the cross section of the crus 12 and the weak power knitted fabric 21 adjacent thereto (the front body weak power knitted fabric 21a, the back body weak power) The ratio of the circumference T of the knitted fabric 21c) is set to S: T = 8: 2 at the ankle position and S: T (= T1 + T2) = 5: 5 at the knee position, and the lower leg strength with respect to the total circumference S + T The ratio of the circumference position S of the power knitted fabric portion 20a is decreased with respect to the ratio of the ankle position. In the present embodiment, from the ankle position to the vicinity of the maximum diameter position of the calf, the ratio of the circumferential length S of the crus strong power knitted fabric portion 20a to the total circumferential length S + T is substantially the same as the above ratio at the ankle position. The ratio is decreased from the vicinity of the maximum calf diameter toward the knee position.

Further, the thigh strong power knitted fabric portion 20b that is continuous with the crus strong power knitted fabric portion 20a is continuously arranged from the knee position to the base of the leg, and the thigh strong power knitted fabric is provided. The portion 20b extends to the outer surface of the thigh 13.
In the non-wearing state, the weak power knitted fabric 21 (the front body weak power knitted fabric 21a, the back body weak power knitted fabric) adjacent to the circumference S of the thigh strong power knitted fabric portion 20b in the cross section of the thigh 13 in the width direction. The ratio S: T of the circumference T in 21c) is set to S: T (= T1 + T2) = 5: 5 at the knee position, and S: T (= T1 + T2) = 2: 8 at the base of the leg, with respect to the total circumference S + T. The ratio of the circumferential length S of the thigh strong power knitted fabric portion 20b is further decreased from the knee position toward the base of the foot.

  Further, the hip strong power knitted fabric portion 20 c that is continuous with the thigh strong power knitted fabric portion 20 b extends to the upper end of the hip portion 15. In order to prevent the waist support and tights from slipping down, the knitted fabric width of the hip portion strong power knitted fabric portion 20c is gradually increased toward the upper end.

The strong power knitted fabric 20 is a knitted fabric knitted by Russell knitting using polyurethane elastic yarns having a fineness of 310 dtex and 44 dtex and nylon yarns having a fineness of 33 dtex.
Further, the weak power knitted fabric 21 is a knitted fabric knitted by a tense knitting with a spliced yarn using a polyester yarn having a fineness of 84 dtex and a splicing yarn as a bare polyurethane yarn having a fineness of 33 dtex.

  The 30% elongation stress by the JIS L 1018 cut strip method means that a test piece cut to 2.5 cm × 20 cm is fixed between grips of a tensile tester (holding interval: 10 cm), and a tensile speed of 30 ± 2 cm / It means the elongation stress when the test piece is stretched to 30% in minutes.

  As described above, in this embodiment, the strong power knitted fabric 20 having a 30% elongation stress of 0.5 to 0.7 N according to the JIS L 1018 cut strip method and the 30% elongation stress of 0.2 to 0.4 N are used. The tights 10 are formed by combining with the weak power knitted fabric 21. Further, the ratio S: T between the circumference S of the crus strong power knitted fabric portion 20a and the circumferential length T of the adjacent weak power knitted fabric 21 in the cross section of the crus 12 in the width direction is 8: 2 to 2 in the non-wearing state. 5: 5, the ratio S: T of the circumferential length S of the weak power knitted fabric 21 adjacent to the circumferential length S of the thigh strong power knitted fabric portion 20b in the cross section of the thigh 13 in the width direction is 5: Within the range of 5 to 2: 8, the ratio of the circumference S of the lower leg and thigh strong power knitted fabric parts 20a, 20b to the total circumference S + T is the knee position from the ankle position, and the base position of the leg from the knee position. It is configured to decrease toward

  With this configuration, even if the thickness balance between the lower thigh 12 and the thigh 13 is different depending on the wearer, 20 to 35 hPa near the ankle position, It is possible to obtain a pressure of 15 to 25 hPa in the vicinity of the twelve calf maximum diameter position and about 5 to 15 hPa in the vicinity of the thigh circumference position between the knee position of the thigh 13 and the base of the leg. In this way, it is possible to reliably reduce the pressure applied upward from the ankle, and it is possible to obtain a stepped pressure structure that is not easily affected by the wearer's body shape. Particularly in the lower leg 12, the lower leg strong power knitted fabric part 20a is disposed in an area covering at least the small saphenous vein V, so that the amount of venous return can be further increased, and the fatigue substance accumulated by exercise or the like Fatigue can be removed and reduced early by increasing the decomposition rate. Further, the 30% elongation stress of the strong power knitted fabric 20 and the circumference ratio of the crus, thigh strong power knitted fabric portions 20a, 20b and the weak power knitted fabric 21 within the above range can be attached and detached. Ease of operation can also be secured.

[Examples and Comparative Examples]
As an example, three subjects A to C wear the tights 10 produced in the above embodiment, and the pressure at the four measurement points 40 to 43 shown in FIG. It was measured. The measurement point 40 is the ankle, the measurement point 41 is the lower leg (calf maximum diameter position), the measurement point 42 is the thigh (thigh circumference position between the knee position and the base of the leg), and the measurement point 43 is the hip ( Table 1 shows the maximum thigh and lower thigh circumferences of subjects A to C. Subject B has a standard balance between the thickness of the lower leg and the thigh (maximum lower leg circumference / maximum circumference of the thigh = 0.69), and subject A has a thicker lower leg than the thigh ( Lower leg maximum circumference / thigh maximum circumference = 0.73), subject C has a narrower leg than the thigh (maximum lower leg circumference / maximum thigh circumference = 0.67) have. Table 1 shows the pressure applied to each of the measurement points 40 to 43 of the subjects A to C. FIG. 5 shows the pressure distribution with the horizontal axis as the measurement point and the vertical axis as the pressure.

  As a comparative example, the subjects A to C wear tights integrally knitted with a tricot knitting structure using polyurethane elastic yarn having a fineness of 130 dtex and nylon yarn of 44 dtex, and the same as in Example 1 The contact pressure was measured at measurement points 40-43. In the tights of the comparative example, the circumferential pressure is gradually increased from the ankle position toward the base of the leg, thereby reducing the wearing pressure stepwise from the ankle upward. Table 2 shows the pressure applied to each of the measurement points 40 to 43 of the subjects A to C in the comparative example, and FIG. 6 shows the pressure distribution with the horizontal axis as the measurement point and the vertical axis as the pressure.

From Table 1, in the examples, for all the subjects A to C, the wearing pressure can be gradually reduced from the ankle to the hip, and it is affected by the difference in the thickness balance between the lower leg and the thigh. It became clear that a difficult stepwise compression structure was obtained.
On the other hand, in the tights of the comparative example that appealed for a general staged pressure arrangement, the pressure on the subject A was reduced from the measurement point 41 (crus) to the measurement point 42 (thigh). In other cases, there was no gradual decrease in wearing pressure from the ankle to the base of the leg.

DESCRIPTION OF SYMBOLS 10 Tights 11 Leg part 12 Lower leg part 13 Thigh part 14 Bottom part 15 Hip part 16 Wearing part 20 Strong power knitted fabric 20a Lower leg strong power knitted fabric part 20b Strong thigh power knitted fabric part 20c Strong hip part Power knitted fabric portion 21 Weak power knitted fabric 21a Front body weak power knitted fabric 21b Front center weak power knitted fabric 21c Back body weak power knitted fabric 30 to 34 Sewing line 40 to 43 Measurement points

Claims (5)

Leg wear with a lower leg covering from the ankle to the knee and a thigh covering from the knee to the base of the leg,
A strong power knitted fabric and a weak power knitted fabric are arranged in the circumferential direction at any position in the length direction from the ankle to the base of the leg, and the ratio of the circumferential length of the strong power knitted fabric to the total circumferential length is The pressure is reduced from the ankle position toward the base of the leg, and the pressure is reduced from the ankle position toward the base of the leg,
The strong power knitted fabric has a 30% elongation stress of 0.5 to 0.7 N by JIS L 1018 cut strip method , and the weak power knitted fabric has a 30% elongation stress of 0.2 to 0.2 by JIS L 1018 cut strip method. It is a 0.4N,
In the crus, the strong power knitted fabric is continuously arranged in a region covering at least the small saphenous vein from the ankle position to the knee position, and the circumference of the strong power knitted fabric in the cross-section in the width direction of the crus And the ratio of the perimeter of the weak power knitted fabric [(perimeter of the strong power knitted fabric) :( perimeter of the weak power knitted fabric)] within the range of 9: 1 to 5: 5 And
In the thigh, the strong power knitted fabric is continuously arranged from the knee position to the base position of the leg, and the circumference of the strong power knitted fabric and the circumference of the weak power knitted fabric in the cross section in the width direction of the thigh the ratio of the length the perimeter of (the strong peripheral length of the power knitted fabric) :( the weak power knitted fabric) in a non-worn condition 5: 5 to 1: 9 is in the range of characterized in that are Leg wear. Wherein the strong power knitted fabric circumference ratio with respect to the total circumferential length of the lower leg width direction cross-section, from the ankle position to the intermediate position of the lower leg is a a constant from said intermediate position of the lower leg The legwear according to claim 1, wherein the legwear is decreased toward the knee position.   While the strong power knitted fabric is knitted by Russell knitting using polyurethane elastic yarn and nylon yarn, the weak power knitted fabric is knitted by tense knitting by adding yarn knitting with polyester yarn as the base yarn and polyurethane yarn as the accessory yarn. The legwear according to claim 1 or 2, wherein the knitted fabric is knitted and the strong power knitted fabric and the weak power knitted fabric are integrated by sewing.   The thigh strong power knitted fabric is connected to the lower thigh strong power knitted fabric and extends to the outer surface of the thigh, and includes a hip portion covering from the base of the leg to the waist. 4. The hip part according to any one of claims 1 to 3, wherein the strong power knitted fabric is arranged continuously to the strong power knitted fabric of the thigh and extends to the upper end of the hip part. Leg wear according to item 1.   The legware according to any one of claims 1 to 4, wherein the legwear is a tight that is not provided with a foot portion that covers the tip from the ankle and is worn during exercise.

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