CN110839976B

CN110839976B - Tight pants

Info

Publication number: CN110839976B
Application number: CN201810871507.2A
Authority: CN
Inventors: 何彩霞; 倪庆美; 刘娟
Original assignee: Toray Fibers and Textiles Research Laboratories China Co Ltd
Current assignee: Toray Fibers and Textiles Research Laboratories China Co Ltd
Priority date: 2018-08-02
Filing date: 2018-08-02
Publication date: 2023-02-21
Anticipated expiration: 2038-08-02
Also published as: CN110839976A

Abstract

The invention discloses a pair of tight trousers. The tights have both a high tightening region and a low tightening region in the circumferential direction of at least the lower leg part, and in the unworn state, the ratio in the circumferential direction from the ankle to the low tightening region of the abdomen of the leg gradually increases. Due to the design, the tights have gradient pressure (clothes pressure) which decreases progressively from bottom to top, can promote blood circulation and relieve sports fatigue; meanwhile, the sports wear has good sports following performance, can effectively inhibit muscle vibration during sports, improves the sports effect, is easy to put on and take off, and is suitable for daily wearing and wearing during sports.

Description

Tight pants

Technical Field

The invention relates to tight trousers, in particular to tight trousers capable of improving the exercise effect.

Background

With the attention of people on sports and fitness, the demand on sports equipment is increased, and various sports equipment is produced. Most sports involve leg movements, so that the protection of the legs of the sports population is very important, and many people use leg protectors, knee pads, stockings, tights and the like. Such commercial products typically have the following properties: (1) The muscle breaking support plays a role in supporting the core muscle group and fully exerts the explosive force of the muscle; (2) The knee, the ankle and the muscle which are easy to be injured are supported, so that the injury is reduced; (3) Promoting blood circulation to promote the speed of oxygen transmission and waste discharge of muscle, thereby shortening the time of energy generation of muscle, reducing lactic acid accumulation, accelerating body recovery and reducing fatigue. Generally, it is considered to attach other materials with different elastic forces to the body, such as polyurethane elastic resin film, high elastic net knitted fabric, high elastic woven fabric, etc.

The tights are convenient to move and are popular with people, but most of the tights are complex in design, so that the pressure of clothes is too high, the tights are too bound to the body, and the tights are difficult to put on and take off. For example, patent document CN205267024U discloses a pair of directional compression trousers for muscle groups, which adopts high-pressure cloth in the leg muscle group area and the lower leg muscle group area, and applies a certain elastic pressure to the thigh muscle group and the lower leg muscle group in the vertical direction, so as to provide more concentrated wrapping force and stability for the key muscle group; the elastic pressure is gradually decreased from the ankle to the shank to the thigh, so that the blood circulation is promoted, the lactic acid accumulation in the strenuous exercise is reduced, high-pressure cloth is arranged in front of and behind the knee to protect the knee, but the skin at the knee and the muscle is greatly stretched in the exercise process, so that the problems of difficulty in putting on and taking off, movement resistance and the like can occur when the tights are designed at the parts under high pressure, and particularly, the muscle is expanded in the later period of exercise to generate uncomfortable pressure.

Disclosure of Invention

The invention aims to provide a pair of tights which are easy to put on and take off and have good comfort, and can inhibit muscle vibration and improve the movement performance.

The technical scheme of the invention is as follows:

the tights according to the present invention have both a high tightening region and a low tightening region in the circumferential direction of at least the lower leg portion, and the ratio in the circumferential direction from the ankle to the low tightening region in the abdomen of the leg is gradually increased in an unworn state.

The compression gradient of the tights from ankles to the abdomen parts of the legs can promote blood circulation and relieve sports fatigue, and meanwhile, the tights have good sports following performance, can effectively inhibit muscle vibration during sports and improve sports performance; and the elastic band has no over-tight tightening force, is easy to put on and take off, and is suitable for daily wearing and wearing during sports.

Drawings

Figure 1 is a schematic front view of tights according to example 1 of the present invention, wherein 1 is a high tightening area and 2 is a low tightening area.

Figure 2 is a schematic side view of tights according to example 1 of the present invention, in which 1 is the high tightening area and 2 is the low tightening area.

Fig. 3 is a schematic view of the back of tights according to example 1 of the present invention, in which 1 is a high tightening area and 2 is a low tightening area.

Detailed Description

In order to achieve both of the following performance and a constant tightening force, the tights of the present invention have a high tightening region and a low tightening region in the circumferential direction of at least the lower leg portion, and have a ratio in the circumferential direction gradually increasing from the ankle to the low tightening region in the abdomen of the leg in an unworn state.

The high tightening region referred to herein specifically means a region having a relatively large recovery stress and a relatively low elongation.

The low-bundling-strength region referred to herein specifically means a region where the recovery stress is relatively small and the elongation is relatively high.

The ankle as used herein refers specifically to the area of the lateral malleolus up to about 10 cm.

The abdomen of the leg as referred to herein specifically means the maximum circumference of the posterior bulge of the lower leg.

If only a low tightening region exists in the circumferential direction of the lower leg portion, a problem arises that the tightening force is insufficient, and it is difficult to achieve the effect of suppressing the muscle vibration. On the other hand, if there is only a high tightening region in the circumferential direction of the lower leg portion, although the tightening force is high, the effect of suppressing the muscle vibration can be achieved, but there is a problem that putting on and taking off is difficult. Therefore, the present invention contemplates providing both the high tightening region and the low tightening region in the circumferential direction of the lower leg portion. Under the non-wearing state, the ratio of the low tightening area in the circumferential direction is gradually increased from the ankle to the abdomen of the leg, the tightening force can reach the gradient pressure which is gradually decreased from bottom to top, the blood circulation is promoted, and the wearing comfort is improved.

Preferably, the proportion of the girth of the tights is gradually increased from 15-35% to 20-50% from the ankle to the abdomen of the legs in the unworn state; more preferably 20% to 30% to 25% to 40%.

The material used for the high-fastening region and the material used for the low-fastening region may be the same or different, and are not particularly limited. If the same fabric is selected, the design is carried out by utilizing different stretching characteristics of warp and weft, namely, the side with high stretching recovery stress is arranged along the circumference direction of the leg to be used as a high-tightening area, and the side with low stretching recovery stress is arranged along the circumference direction of the leg to be used as a low-tightening area. Or overlapping the two fabrics to be used as a high-fastening area, and using a single fabric as a low-fastening area. The fabric used is preferably an elastic knitted fabric containing polyurethane fibers. The weave can be weft plain, warp velvet plain or other complex weaves and the like.

Preferably, the fabric used in the high cinch region and the low cinch region have different elongation characteristics.

Preferably, the low tightening region covers the triceps surae of the lower leg formed by the gastrocnemius and the soleus, and the connecting line between the high tightening region and the low tightening region is distributed along the triceps surae of the lower leg formed by the gastrocnemius and the soleus, so that the main muscles of the leg can freely vibrate in a small range during exercise, and fatigue does not occur.

In general, tights have a wearing lateral elongation of about 30%, and a taking-off lateral elongation of about 80%. Preferably, the tights according to the present invention have a recovery stress in the high tightening region 0.3 to 1.5N greater than the recovery stress in the low tightening region at 30% extension in the circumferential direction of the legs. Within this range, the adjacent portions of the two regions, while having a significant garment pressure differential, are not too strong or too weak to cause discomfort.

In consideration of comfort during wearing and prevention of muscle vibration, it is preferable that the tights of the present invention have a recovery stress of 0.5 to 2.5N in the high tightening region and a recovery stress of 0.1 to 1.2N in the low tightening region at 30% elongation in the circumferential direction of the legs.

Preferably, the wearing elongation of the tights according to the present invention is gradually reduced from 15% to 60% to 5% to 45% from the ankle to the abdomen of the leg in a wearing state.

Preferably, the recovery stress in the low tightening region is gradually reduced from 0.5 to 3N to 0.1 to 2N from the ankle to the abdomen of the leg in the worn state. Within this range, the wearing pressure is appropriate, and the muscle vibration can be suppressed.

The tights gradually reduce the wearing elongation from ankles to leg abdomens in a wearing state, can provide gradient pressure (clothing pressure) which is gradually decreased from bottom to top, promote blood circulation and improve wearing comfort. On the contrary, if the elongation of the wear is gradually increased or unchanged from the ankle to the abdomen of the leg, only a gradient pressure is provided from bottom to top or no pressure is changed, which may hinder the blood circulation and promote fatigue.

Preferably, the tight index of the fabric forming the pants of the present invention is 1.5 or less in a worn state, and the difference between the elongation stress at 80% elongation and the recovery stress at 80% elongation is 5N or less. The tightness index herein refers to the degree of tightness of the garment to the human body. When the tightening index exceeds 1.5, the coating feeling is strong in the state of rest, but the following performance tends to be low in the state of exercise. Further, when the difference between the elongation stress at 80% elongation and the recovery stress at 80% elongation exceeds 5N, there is a possibility that the leg portion is hardly put on or off although it is supported, or the leg portion is not supported although it is easily put on or off.

In the tights according to the present invention, the lower leg part and the part from the knee to the waist are sewn together, at least the front sewing line is positioned at the lower end of the patella of the knee, and the part corresponding to the knee is made of a fabric for the low tightening region. Such a design facilitates knee movements, in particular knee bending movements, and may reduce slipping of the briefs.

In the tights according to the present invention, the lower leg part and the part from the knee to the waist are connected by sewing, and at least the sewing connection line on the rear side is located at the upper end of the knee fossa. The design can reduce the occurrence probability of folds generated after the knee is bent during the knee bending movement, and ensure the aesthetic property; and facilitates recovery of the fold from flexion to extension.

The tights of the invention adopt the modes of edge joint, M seam and the like with smooth seams as much as possible when sewing in consideration of the comfort when wearing.

Preferably, the tights of the present invention have an elongation in the length direction of the legs of not less than 80%. If the content is less than 80%, the following performance may be impaired.

The present invention will be further described with reference to examples and comparative examples.

The method for testing and evaluating physical properties and the like according to the present invention is as follows:

(1) Elongation (Fabric)

Using JIS L1096: 2010 elongation D method, using a Meits CMT6103 universal testing machine, under the following test conditions: clamping distance: 76mm, speed: 100mm/min, terminating force: 22.1N, sample cloth size: 10cm × 15cm (3 blocks), elongation = (extension distance at termination force/grip distance-1) × 100%, averaged.

(2) Elongation stress and recovery stress

Using JIS L1096: 2010 elongation recovery E method, using a Meits CMT6103 universal testing machine, under the following test conditions: clamping distance: 76mm, width of nip 2.5cm, speed: 100mm/min, termination force: 22.1N, 5 cycles, sample cloth size: elongation versus stress was plotted using the first elongation and 5 th recovery data for 10cm by 15cm (3 blocks). Elongation stress: reading the stress corresponding to the elongation on the elongation curve, and taking an average value; and (3) recovery stress: the stress at the corresponding elongation is read on the recovery curve and averaged.

(3) Elongation at wear

Firstly, marking the part of the tights needing to measure the wearing elongation, measuring the girth when the tights are not worn, then selecting a corresponding model of the tights according to leg data of 'human body size data 2004-2006' of Japanese published by the research center of inter-human engineering, wearing the tights on the manikin, measuring the girth when the tights are worn, calculating the corresponding wearing elongation according to the following formula, and taking the average value of 3 times:

elongation at wear = (circumferential length when worn/circumferential length when not worn-1) × 100%

Low fastening area wear elongation = (length of low fastening area in leg circumferential direction when worn/length of low fastening area in leg circumferential direction when unworn) × 100%.

(4) Tightness index

A Meits CMT6103 universal testing machine is adopted, and the testing conditions are as follows: size of sample cloth: 10cm × 15cm (3 pieces), nip: 76mm, width of nip 2.5cm, speed: the test specimen was stretched to 110% at 300mm/min, and the stress at 30% elongation < N1> and the stress at 80% elongation < N2> were read and calculated according to the following formula, taking the average value of 3 times: tautness index = ((stress at 80% elongation of test specimen < N1> -stress at 30% elongation of test specimen < N2 >)/50) × 10.

(5) Clothes press

The measurement was carried out using a contact pressure measuring instrument of AMI corporation of Japan, and the airbag was selected to have a diameter of 20mm. The tights are worn on the manikins with corresponding models, the clothes pressure from the ankle to the abdomen of the leg is measured, and the average value is obtained after 5 times of measurement.

(6) Amplitude of muscle vibration

Mark points were attached to the tights worn by 10 subjects at positions corresponding to the muscle belly (gastrocnemius) and bones (knee-ankle). The subject jumps from a 30cm high jump to a fixed ground 45cm from the jump. And capturing the displacement of the mark point in the jumping process by using a Vicon infrared motion capture system. And calculating the vibration amplitudes of different muscles through the displacement of mark points, and taking an average value. The smaller the muscle vibration amplitude is, the smaller the muscle energy loss is, and the motion effect can be improved. Sensory evaluation results (average value) of 10 subjects on the tightening feeling and the ease of exercise were collected at the same time, and the larger the rank value is, the better the effect is.

(7) Difficulty in wearing and taking off

The 10 male testees stand with the same width of feet and shoulders, and put on and take off the male testees in two steps: directly mentioning the waist for finishing; removing: directly taking off the ankle and finishing. In the above process, the test subjects put on and take off the tight pants by themselves, and the ease of putting on and taking off was evaluated. 1: difficult, 2: less easy, 3: it is easy. The larger the scale, the easier the putting-in and putting-out.

Example 1

The low-lacing area is a velour plain fabric woven by 78 weight percent of 44dtex-34 f-terylene FDY and 22 weight percent of 44dtex spandex, and the gram weight of the velour plain fabric is 185g/m ² The tightening index is 0.8; the elongation stress at 80% elongation was 5.6N, the recovery stress was 2.2N, the difference between the elongation stress at 80% elongation and the recovery stress at 80% elongation was 3.4N, and the recovery stress at 30% elongation in the circumferential direction of the leg was 0.2N.

The high-lacing area adopts a warp-pile plain fabric woven by 66 weight percent of 44dtex-34 f-terylene FDY and 34 weight percent of 77dtex spandex, and the gram weight of the warp-pile plain fabric is 205g/m ² The tightening index is 1.3; the elongation stress at 80% elongation was 9.2N, the recovery stress was 4.2N, the difference between the elongation stress at 80% elongation and the recovery stress at 80% elongation was 5.0N, and the recovery stress at 30% elongation in the circumferential direction of the leg was 0.7N.

The low-tightening zone is stitched to the high-tightening zone according to the design of fig. 1, 2 and 3, wherein the lower leg is connected to the knee-to-waist portion by M-stitches, the anterior stitch is located at the lower end of the patella of the knee, and the posterior stitch is located at the upper end of the fossa of the knee. When not worn, the ratio of the circumferential length of the low tightening area of the lower leg portion to the circumferential length of the tights of the same height was 25% for the ankle and 32% for the abdomen, and the ratio of the low tightening area from the ankle to the abdomen in the circumferential direction was gradually increased to obtain the tights of the present invention. See table 2 for details.

Example 2

The high-lacing area adopts a warp-pile plain fabric woven by 60 weight percent of 44dtex-34 f-terylene FDY and 40 weight percent of 77dtex spandex, and the gram weight of the warp-pile plain fabric is 220g/m ² The tightening index is 1.5; the elongation stress at 80% elongation was 12.0N, the recovery stress was 6.1N, the difference between the elongation stress at 80% elongation and the recovery stress at 80% elongation was 5.9N, and the recovery stress at 30% elongation in the circumferential direction of the leg was 2.9N.

The tights according to the invention were obtained in the same manner as in example 1. See table 2 for details.

Example 3

When not worn, the ratio of the circumferential length of the lower tightening region of the lower leg portion to the circumferential length of the tights of the same height was 30% for the ankle and 32% for the abdomen of the leg, and the tights of the present invention were obtained in the same manner as in example 1. See table 2 for details.

Example 4

When not worn, the ratio of the circumferential length of the lower tightening region of the lower leg portion to the circumferential length of the tights of the same height was 38% for the ankle and 60% for the abdomen of the leg, and the tights of the present invention were obtained in the same manner as in example 1. See table 2 for details.

Example 5

The high-lacing area is a velour plain weave fabric woven by 70 weight percent of 44dtex-34 f-terylene FDY and 30 weight percent of 77dtex spandex, and the gram weight of the velour plain weave fabric is 250g/m ² The tightening index is 1.3; the elongation stress at 80% elongation was 11.4N, the recovery stress was 8.0N, the difference between the elongation stress at 80% elongation and the recovery stress at 80% elongation was 3.4N, and the recovery stress at 30% elongation in the circumferential direction of the legs was 1.7N, and the whole was subjected to the same procedure as in example 1 to obtain tights according to the present invention. See table 2 for details.

Example 6

The low-lacing area is a warp-pile plain fabric woven by 66 weight percent of 44dtex-34 f-terylene FDY and 34 weight percent of 77dtex spandex, and the gram weight of the fabric is 205g/m ² Tightness indexIs 1.3; the elongation stress at 80% elongation was 9.2N, the recovery stress was 4.2N, the difference between the elongation stress at 80% elongation and the recovery stress at 80% elongation was 5N, and the recovery stress at 30% elongation in the circumferential direction of the leg was 0.7N, and the tights according to the present invention were obtained in the same manner as in example 5. See table 2 for details.

Example 7

The low tight binding area and the high tight binding area are both selected from a warp pile plain fabric woven by 66 weight percent of 44dtex-34 f-terylene FDY and 34 weight percent of 77dtex spandex, and the gram weight of the warp pile plain fabric is 205g/m ² The tightening index is 1.3; the elongation stress at 80% elongation was 9.2N, the recovery stress was 4.2N, the difference between the elongation stress at 80% elongation and the recovery stress at 80% elongation was 5.0N, and the recovery stress at 30% elongation in the circumferential direction of the leg was 0.7N. The tights according to the invention were obtained in the same manner as in example 1. See table 2 for details.

Example 8

The low-lacing area is a weft-knitted plain knitted fabric which is knitted by 78 weight percent of 44dtex-34 f-terylene FDY and 22 weight percent of 44dtex spandex, and the gram weight of the weft-knitted plain knitted fabric is 155g/m ² The tightening index is 0.7; the elongation stress at 80% elongation was 4.6N, the recovery stress was 1.6N, the difference between the elongation stress at 80% elongation and the recovery stress at 80% elongation was 3.0N, and the recovery stress at 30% elongation in the leg circumferential direction was 0.3N.

The high-tightening area is composed of two layers of cloth selected from the low-tightening area, and the tightening index is 1.4; the elongation stress at 80% elongation was 9.2N, the recovery stress was 4.1N, the difference between the elongation stress at 80% elongation and the recovery stress at 80% elongation was 5.1N, and the recovery stress at 30% elongation in the circumferential direction of the leg was 0.8N.

The low-cinch area of material is stitched to the high-cinch area according to the design of fig. 1, 2 and 3, wherein the lower leg portion is connected to the knee to waist portion by an M-stitch, the anterior stitch is located at the patellar inferior end of the knee and the posterior stitch is located at the superior end of the fossa. When not worn, the ratio of the circumferential length of the lower tightening region of the lower leg portion to the circumferential length of the tights of the same height was 26% for the ankle and 32% for the abdomen of the leg, and the tights of the present invention were obtained. See table 2 for details.

Example 9

The low-lacing area adopts weft knitting terry stitch fabric which is knitted by 75 weight percent of 66dtex-96 f-terylene DTY, 56dtex-36 f-terylene DTY and 25 weight percent of 33dtex spandex, and the gram weight of the weft knitting terry stitch fabric is 185g/m ² The tightness index is 1.0; the elongation stress at 80% elongation was 6.4N, the recovery stress was 2.3N, the difference between the elongation stress at 80% elongation and the recovery stress at 80% elongation was 4.1N, and the recovery stress at 30% elongation in the circumferential direction of the leg was 0.3N.

The high tightening region is composed of two layers of cloth selected for the low tightening region, the tightening index is 2.1, the elongation stress at 80% elongation is 12.6N, the recovery stress is 6.1N, the difference between the elongation stress at 80% elongation and the recovery stress at 80% elongation is 6.5N, and the recovery stress at 30% elongation in the circumferential direction of the leg is 0.7N.

Example 10

The low-binding area is a warp-pile plain fabric, and the tightening index of the low-binding area is 1.4; the elongation stress at 80% elongation was 10.5N, the recovery stress was 4.9N, the difference between the elongation stress at 80% elongation and the recovery stress at 80% elongation was 5.6N, and the recovery stress at 30% elongation in the circumferential direction of the leg was 0.5N.

The high-fastening area adopts a warp-pile plain fabric, and the fastening index of the high-fastening area is 1.9; the elongation stress at 80% elongation was 12.1N, the recovery stress was 5.9N, the difference between the elongation stress at 80% elongation and the recovery stress at 80% elongation was 6.3N, and the recovery stress at 30% elongation in the circumferential direction of the legs was 0.6N.

The low-cinch area of material is stitched to the high-cinch area according to the design of fig. 1, 2 and 3, wherein the lower leg portion is connected to the knee to waist portion by an M-stitch, the anterior stitch is located at the patellar inferior end of the knee and the posterior stitch is located at the superior end of the fossa. When not worn, the ratio of the circumferential length of the lower tightening region of the lower leg portion to the circumferential length of the tights of the same height was 25% for the ankle and 33% for the abdomen of the leg, and the tights of the present invention were obtained. See table 2 for details.

Example 11

The low-binding area adopts a warp-pile plain fabric, and the tightening index of the warp-pile plain fabric is 1.6; the elongation stress at 80% elongation was 10.5N, the recovery stress was 4.6N, the difference between the elongation stress at 80% elongation and the recovery stress at 80% elongation was 5.9N, and the recovery stress at 30% elongation in the circumferential direction of the leg was 0.5N.

The high-tightness area is made of warp-pile flat fabric, and the tightness index of the warp-pile flat fabric is 2.7; the elongation stress at 80% elongation was 16.0N, the recovery stress was 7.4N, the difference between the elongation stress at 80% elongation and the recovery stress at 80% elongation was 8.6N, and the recovery stress at 30% elongation in the circumferential direction of the leg was 0.5N.

The low-cinch area of material is stitched to the high-cinch area according to the design of fig. 1, 2 and 3, wherein the lower leg portion is connected to the knee to waist portion by an M-stitch, the anterior stitch is located at the patellar inferior end of the knee and the posterior stitch is located at the superior end of the fossa. When not worn, the ratio of the circumferential length of the lower tightening region of the lower leg portion to the circumferential length of the tights of the same height was 26% for the ankle and 31% for the abdomen of the leg, and the tights of the present invention were obtained. See table 2 for details.

Comparative example 1

When not worn, tights were obtained in the same manner as in example 1 except that the ratio of the circumferential length of the lower tightening region of the lower leg portion to the circumferential length of tights with the same height was 32% for the ankle and 25% for the abdomen of the leg. See table 2 for details.

TABLE 2

According to the results of Table 2, it was shown,

(1) As can be seen from examples 2 and 5, in the tights with a recovery stress of 2.9N at the high tightening region at 30% elongation under the same conditions, compared with the tights with a recovery stress of 1.7N at the high tightening region at 30% elongation, the garment pressure in the low tightening region is equivalent, the body elongation in the circumferential direction and the recovery stress in the worn state are slightly higher in the former than in the latter, and therefore the amplitude of the muscle vibration is equivalent in both, the sense of restraint, ease of movement, and ease of putting on and taking off are slightly smaller in the former than in the latter, and the overall evaluation of the effects is equivalent in both.

(2) As can be seen from examples 3 and 4, in the case of tights having a lower calf tightening region of 30% in the circumferential direction and an abdomen area of 32% in the ankle area, the clothing pressure in the low tightening region, the wearing elongation in the circumferential direction, and the recovery stress in the worn state were higher than those of tights having an ankle area of 38% and an abdomen area of 60% in the unworn state under the same conditions, and therefore, the former had a smaller amplitude of muscle vibration, a smaller feeling of restraint, and was easy to exercise and take on and off, and the former was better than the latter in overall evaluation.

(3) As is clear from examples 6 and 7, in the case of tights having a difference in recovery stress between the high tightening region and the low tightening region at 30% elongation of 1.0N under the same conditions, the tights having a difference in recovery stress between the high tightening region and the low tightening region at 30% elongation of 0N were slightly inferior in putting-on and taking-off properties, though the results of the two tests were comparable.

(4) As is clear from comparative example 1 and example 1, in the tights with gradually increasing ratio of the low tightening region in the circumferential direction in the unworn state under the same conditions, the tights with large amplitude of muscle vibration, large feeling of restraint, less mobility and wearing and removing performance were compared with the tights with gradually decreasing ratio of the low tightening region in the circumferential direction, and the effect of the former was far inferior to the latter.

Claims

1. A pair of tights, characterized by: the tights have a high tightening region and a low tightening region both in the circumferential direction of at least the lower leg part, and the ratio in the circumferential direction from the ankle to the low tightening region of the abdomen of the leg is gradually increased in an unworn state; gradually increasing the ratio of the low cinching area to the girth of the tights from 15-35% to 20-50% from the ankle to the abdomen of the legs in an unworn state; in a wearing state, the low tightening region covers the triceps surae consisting of gastrocnemius and soleus, and connecting lines of the high tightening region and the low tightening region are distributed along the triceps surae consisting of gastrocnemius and soleus.

2. The pair of briefs of claim 1 wherein: the material used in the high fastening area and the material used in the low fastening area have different elongation characteristics.

3. The pair of briefs of claim 1 wherein: the recovery stress of the high tightening area is 0.3 to 1.5N greater than the recovery stress of the low tightening area when the tights are extended by 30% in the circumferential direction of the legs.

4. The pair of tights of claim 1, wherein: when the tights are extended by 30% in the circumferential direction of the legs, the recovery stress of the high tightening area is 0.5-2.5N, and the recovery stress of the low tightening area is 0.1-1.2N.

5. The pair of tights of claim 1, wherein: the low fastening region gradually decreases the wear elongation in the circumferential direction from 15% to 60% to 5% to 45% from the ankle to the abdomen of the leg in a worn state.

6. The pair of tights of claim 1, wherein: the recovery stress of the low tightening region is gradually reduced from 0.5 to 3N to 0.1 to 2N from the ankle to the abdomen of the leg in a wearing state.

7. The pair of tights of claim 1, wherein: the lower leg part of the tights is connected with the part from the knee to the waist by sewing, at least the front side of the tights is positioned at the lower end of the patella of the knee, and the part corresponding to the knee is made of the fabric used in the low tightening area.

8. The pair of tights of claim 1, wherein: the lower leg part of the tights is connected with the part from the knee to the waist by sewing, and at least the rear side of the tights is positioned at the upper end of the knee fossa by the sewing connecting line.