Swimsuit wearing method and swimsuit

Abstract

The invention provides a method for wearing a swimsuit and a swimsuit capable of generating a desired torsional force. A method for wearing a swimsuit (1) having a predetermined wearing pressure, the swimsuit (1) comprising a stretchable fabric covering at least a part of the lower body from the vicinity of the waist (92), the swimsuit (1) being worn by twisting the lower hem (22) of the swimsuit (1) so that a mark (P) provided on the swimsuit (1) is positioned at a predetermined position.

Description

Technical Field

[0001] The present invention relates to a method for wearing a swimsuit and the swimsuit. Background Art

[0002] Generally speaking, a competitive swimming swimsuit is required to support the wearer's posture and / or muscle movements in order to improve swimming efficiency.

[0003] Patent Document 1 discloses a swimsuit that provides a belt-shaped tightening portion along the body length direction from the left and right buttocks to the thighs, thereby stabilizing the underwater posture and supporting the movement of the hamstring muscles.

[0004] Prior art literature

[0005] Patent Literature

[0006] Patent Document 1: International Publication No. 2017 / 144940 Summary of the invention

[0007] Technical issues

[0008] As a result of repeated and intensive studies, the inventors have come to the conclusion that competitive swimmers can efficiently exert propulsive force by kicking with their hip joints internally rotated.

[0009] Based on the above findings, the present invention provides a method for wearing a swimsuit and a swimsuit that can generate a torsional force for supporting the internal rotation of the wearer's hip joint.

[0010] Technical Solution

[0011] One embodiment of the present invention provides a method for wearing a swimsuit, wherein the swimsuit is worn by twisting the hem of the swimsuit so that a mark provided on the swimsuit is located at a predetermined position, wherein the swimsuit is made of a stretchable fabric that covers at least a portion of the lower body from the vicinity of the waist and has a predetermined wearing pressure.

[0012] According to the present invention, the twist amount of the hem portion of the swimsuit can be managed by using a mark indicating the twist amount, so that the swimsuit having a predetermined wearing pressure can be appropriately twisted to generate a desired twisting force. As a result, for example, from the waist to the knee of the wearer, which is in contact with the swimsuit, it is easy to apply a desired supporting force in a manner that causes the hip joint to internally rotate.

[0013] Technical Effects

[0014] According to the present invention, a method for wearing a swimsuit and a swimsuit capable of generating a desired torsional force can be provided. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a front view of a swimsuit of the present invention.

[0016] Figure 2 It is a side view of the left side of the swimsuit of the present invention.

[0017] Figure 3 It is a rear view of the swimsuit of the present invention.

[0018] Figure 4 It is a front view of the swimsuit of the present invention turned inside out.

[0019] Figure 5 It is a rear view of the swimsuit of the present invention turned inside out.

[0020] Figure 6 It is a schematic diagram of the part from the waist to the toes of the wearer.

[0021] Figure 7 is schematically shown along Figure 2 Schematic diagram of the cross section of line VII-VII.

[0022] Figure 8 Yes Figure 1 A schematic diagram schematically showing the crotch periphery indicated by arrow VIII enlarged and viewed from below.

[0023] Fig. 9 is schematically shown along Figure 8 Schematic diagram of the cross section of line IX-IX.

[0024] Fig.10 is schematically shown along Figure 8 Schematic diagram of the cross section of line XX.

[0025] Fig.11 Yes Figure 5 The area indicated by the arrow XI is enlarged and a portion thereof is schematically shown in an enlarged rear view in cross section.

[0026] Fig.12 This is a front view of a state where the swimsuit of the present invention is twisted and worn.

[0027] Fig.13 This is a schematic diagram schematically showing the hem portion of the swimsuit of the present invention in a state where the swimsuit is worn without being twisted.

[0028] Fig.14 It is a schematic diagram of the front view, side view, rear view and hem part of the swimsuit of the second embodiment.

[0029] Fig.15 It is a schematic diagram of the front view, side view, rear view and hem part of the swimsuit of the third embodiment.

[0030] Fig.16It is a schematic diagram of the front view, side view, rear view and hem part of the swimsuit of the fourth embodiment.

[0031] Fig.17 This is a development view schematically showing a state where the swimsuit according to the fourth embodiment is developed.

[0032] Explanation of symbols

[0033] 1. Swimsuit

[0034] 9 Wearer

[0035] 21 Waist

[0036] 22 Hem

[0037] 23 Crotch

[0038] 25 Inner thigh line

[0039] 42 Hem strap

[0040] 41 Waist belt

[0041] 51 Rib belt

[0042] 51c Bend

[0043] 53a First back band

[0044] 53b Second back strap

[0045] 53d Lower part

[0046] 91 Thigh

[0047] 92 Waist

[0048] 94 Large rotor

[0049] 97 Hips

[0050] 99 Center of the patella

[0051] D3 Separation distance

[0052] G Rigidity Reduction Section

[0053] L21 length

[0054] P Mark DETAILED DESCRIPTION

[0055] The present invention relates to a swimsuit. Before describing the structure of the swimsuit 1, refer to Figure 1 The relationship between the swimsuit 1 and the wearer 9 when being worn will be briefly described.

[0056] As a result of repeated and intensive studies, the inventors have come to the conclusion that competitive swimmers can efficiently exert propulsive force by kicking with their hip joints internally rotated. Figure 1 It is a front view of the state before twisting of the swimsuit 1 according to the embodiment of the present invention. Figure 1 The swimsuit 1 shown is worn by the wearer 9 by twisting the hem 22 toward the inner side of the thigh 91 of the wearer 9 (arrow A). Thus, a twisting force in the inward rotation direction is generated from the waist 92 of the wearer 9 to the thigh 91, while the hip joint 93 (refer to Figure 6 ) exerts a supporting force in the state of internal rotation, thereby controlling the posture of the wearer 9.

[0057] Hereinafter, a tight-fitting swimming competition swimsuit (hereinafter, also referred to as a "swimsuit") 1 as an embodiment of the swimsuit of the present invention will be described with reference to the accompanying drawings. Hereinafter, the up and down, left and right, and front and back of the swimsuit 1 are determined based on the state in which the wearer 9 wearing the swimsuit 1 is in an upright position. In addition, with respect to the cross section (thickness direction) of the fabric, the direction from the outer surface toward the inside (wearer side) is defined as the inner side, the opposite direction is defined as the outer side, the direction toward the outer side in the body width direction is defined as the outer side, and the direction toward the center side in the body width direction is defined as the inner side.

[0058] Reference Figure 1 to Figure 3 The swimsuit 1 has a main body 2 that covers at least a portion of the lower body from the vicinity of the waist 92, an anti-slip component 4 attached to the inner side of the main body 2 and used to improve the close contact and fit between the swimsuit 1 and the skin of the wearer 9, a belt component 5 attached to the main body 2, and a mark P for guiding the twisting amount of the hem 22.

[0059] Reference Figure 1 The main body 2 is made of stretch fabric and has a predetermined wearing pressure. It is assumed that the stretch fabric is worn in a state of being stretched by 5.9% or more and 30.5% or less and in close contact with the wearer 9. The elongation of the stretch fabric can also be calculated, for example, based on the circumference of the hem 22 in the pattern and the circumference of the hem when worn on the human body model. In more detail, the first stretch fabric corresponding to the fabric located on the front side of the wearer and covering the thigh 91 is cut Figure 1For the fabric obtained by testing the test piece in the region indicated by a in the figure, the elongation side stress at 30% elongation in the length direction (warp direction) is preferably 5.12 N or more and 19.7 N or less, and in this embodiment, for example, it is 7.5 N. The elongation side stress at 30% elongation in the width direction (weft direction) of the first stretch fabric is preferably 4.65 N or more and 11.0 N or less, and in this embodiment, for example, it is 6.5 N. It should be noted that in this embodiment, the recovery side stress at 30% elongation in the length direction of the first stretch fabric is 0.297 N, and the recovery side stress at 30% elongation in the width direction is 1.036 N.

[0060] When the elongation side stress of the first elastic fabric at 30% elongation in the body length direction is less than 5.12 N, and / or when the elongation side stress of the first elastic fabric at 30% elongation in the body width direction is less than 4.65 N, the tightening (wearing pressure) is weak and it is difficult to obtain the internal rotation support force. If the elongation side stress of the first elastic fabric at 30% elongation in the body length direction exceeds 19.7 N, and / or the elongation side stress at 30% elongation in the body width direction exceeds 11.0 N, the tightening (wearing pressure) is strong and it is difficult to twist the hem portion 22. In addition, the wearing pressure becomes excessive, which is likely to hinder the movement of the wearer.

[0061] The stress of the stretch fabric during elongation in the length direction and width direction of the body was measured as follows: a fabric piece having a width of 50 mm and a length of 200 mm in both the warp and weft directions was prepared, the clamping width was set to 65 mm in each direction, and the fabric piece was fixed to a tensile testing machine (Autograph AGS-X, Shimadzu Corporation) with a clamping interval of 100 mm, and the fabric piece was stretched at a stretching speed of 200 mm / min, and the stress at an elongation of 30% was read as the "stretching side stress", and at the time point when the elongation reached 100%, the fabric piece was restored at a recovery speed of 200 mm / min, and the stress at an elongation of 30% during the restoration was read as the "restoring side stress".

[0062] More specifically, the second stretch fabric corresponding to the fabric located at the back side of the wearer and covering the thigh 91 is cut out. Figure 3 For the fabric obtained by testing the test piece in the region indicated by b in the figure, the elongation side stress at 30% elongation in the length direction is preferably 13.7 N or more and 28.0 N or less, and in this embodiment, for example, 15.6 N. The elongation side stress at 30% elongation in the width direction of the second stretch fabric is preferably 11.6 N or more and 33.1 N or less, and in this embodiment, for example, 19.0 N. In this embodiment, the recovery side stress at 30% elongation in the length direction of the second stretch fabric is 1.54 N, and the recovery side stress at 30% elongation in the width direction is 1.84 N.

[0063] When the elongation side stress of the second elastic fabric at 30% elongation in the body length direction is less than 13.7 N, and / or when the elongation side stress of the second elastic fabric at 30% elongation in the body width direction is less than 11.6 N, the tightening (wearing pressure) is weak and it is difficult to obtain the internal rotation support force. When the elongation side stress of the second elastic fabric at 30% elongation in the body length direction exceeds 28.0 N, and / or when the elongation side stress of the second elastic fabric at 30% elongation in the body width direction exceeds 33.1 N, the tightening (wearing pressure) is strong and it is difficult to twist the hem portion 22. In addition, the wearing pressure becomes excessive, which is likely to hinder the movement of the wearer.

[0064] like Figure 1 As shown, the main body 2 includes a waist portion 21 positioned at the waist 92 of the wearer 9 and a pair of left and right hem portions 22 , 22 into which the left and right legs of the wearer are inserted.

[0065] The waist portion 21 and the hem portion 22 are respectively attached with a belt-shaped anti-slip component 4. More specifically, the anti-slip component 4 includes a waist belt 41 located at the waist portion 21 and a hem belt 42 located at the hem portion 22. The waist belt 41 is bonded to the inner side surface of the main body 2 along the upper edge of the waist portion 21 over the entire circumference. It should be noted that the waist belt 41 may also have a portion where the waist belt 41 is not provided, for example, when a rope for waist adjustment is provided. The hem belt 42 is bonded to the inner side surface of the main body 2 along the lower edge of a pair of left and right hem portions 22 over the entire circumference.

[0066] The waistband 41 and the hemband 42 make the waist 21 and the hem 22 close to the skin of the wearer 9 and suppress the sliding of the waist 21 and the hem 22 relative to the wearer 9. In more detail, if sliding occurs between the waist 21, the hem 22 and the wearer 9, it is difficult to maintain the twisted state of the hem 22 relative to the waist 21 when the hem 22 is twisted and worn, and it is difficult to apply the supporting force in the inner rotation direction. In contrast, by suppressing the sliding of the waist 21 relative to the waist 92, the hem 22 can be twisted in the state of fixing the waist 21, and by suppressing the sliding of the hem 22 relative to the thigh 91, it is easy to fix the hem 22 to the waist 21 in the twisted state.

[0067] The anti-slip component 4 can be made of a material with a friction coefficient that does not cause slippage between the wearer 9 and the anti-slip component 4, for example, a silicon-containing belt can be used. In this embodiment, the waist belt 41 is made of a silicon-containing belt with a width of 20 mm, and the hem belt 42 is made of a silicon-containing belt with a width of more than 10 mm and less than 20 mm.

[0068] like Figures 1 to 3As shown, the main body portion 2 includes a front body fabric 31 that covers the abdomen side of the wearer 9 and a back body fabric 32 that covers the hip side of the wearer.

[0069] In this embodiment, the main body 2 has a pair of left and right rib lines 24 that connect the front body fabric 31 and the back body fabric 32 on both sides in the width direction, a pair of left and right inner thigh lines 25 that connect on the inside in the width direction, and a crotch portion 23 that connects between the pair of left and right inner thigh lines 25. The crotch portion 23 is located in the crotch of the wearer 9, and the rib lines 24 extend from the waist portion 21 to the hem portion 22 in the vertical direction on the outside in the width direction, and each inner thigh line 25 extends from the left and right ends of the crotch portion 23 to the hem portion 22 in the vertical direction.

[0070] Figure 4 This is a front view of the swimsuit 1 turned inside out. Figure 5 1 is a rear view of the swimsuit 1 turned inside out. Figure 1 to Figure 5 As shown, the front body fabric 31 and the back body fabric 32 each include a front material 33 located outside in the thickness direction of the fabric cross section and a lining material 34 located inside in the thickness direction of the front material 33. In this embodiment, the front material 33 and the lining material 34 are each composed of a plurality of fabrics.

[0071] like Figure 1 to Figure 3 As shown, the fabric 33 includes a front fabric 33a constituting the front fabric 31 and a back fabric 33b constituting the back fabric 32. The front fabric 33a includes: a central fabric 33c, which is arranged at a position corresponding to the abdomen of the wearer; and a left front fabric 33d and a right front fabric 33e, which are respectively located on the left and right sides of the wearer across the central fabric 33c. The back fabric 33b includes: a left back fabric 33f, which is located on the left side in the width direction; and a right back fabric 33g, which is located on the right side in the width direction.

[0072] like Figure 4 and Figure 5 As shown, the lining 34 includes a front lining 34a constituting the front body fabric 31 and a back lining 34b constituting the back body fabric 32. The front lining 34a has a shape corresponding to the center fabric 33c and is attached to the inner side of the center fabric 33c. The back lining 34b has a shape corresponding to the left back fabric 33f and the right back fabric 33g, and includes a left back lining 34c and a right back lining 34d attached to the inner sides of the left back fabric 33f and the right back fabric 33g. In other words, the lining 34 is not attached to the inner sides of the left front fabric 33d and the right front fabric 33e.

[0073] The left rear lining 34c and the right rear lining 34d have first rear linings 34e and 34f located on the outside in the width direction, second rear linings 34g and 34h located on the upper inside in the width direction, and third rear linings 34i and 34j located on the lower inside in the width direction.

[0074] In this way, the main body 2 is formed by sewing or joining a plurality of outer fabrics 33 and linings 34. The belt members 5 are respectively attached to portions where the ends of the plurality of outer fabrics 33 and linings 34 are sewn or joined to each other.

[0075] The belt member 5 includes a pair of left and right rib belts 51 extending along a pair of left and right rib lines 24, a crotch belt 52 extending along the inner thigh line 25, and a pair of left and right back belts 53 provided on the back body fabric 32. The tensile stress in the longitudinal direction of the belt member 5 is greater than the tensile stress in the longitudinal direction of the first stretch fabric and the second stretch fabric constituting the main body 2, and the elongation side stress of the belt member 5 when elongated by 30% is set to be 3.0 times or more and 6.7 times or less of that of the first stretch fabric, and 1.5 times or more and 3.2 times or less of that of the second stretch fabric.

[0076] like Figure 1 and Figure 2 As shown in the left view of , the rib belt 51 extends in the up-down direction along the rib line 24 on the outer surface side of the main body 2. More specifically, the rib belt 51 includes: a first inclined portion 51a, which is inclined backward and downward from the upper edge of the waist portion 21 above the greater trochanter 94 of the wearer; a second inclined portion 51b, which is inclined forward and downward from a position further below the greater trochanter 94 and extends to the lower edge of the hem portion 22; and a curved portion 51c, which is arranged between the first inclined portion 51a and the second inclined portion 51b in a curved manner to go around the rear side of the greater trochanter 94. In other words, the curved portion 51c is provided at a portion corresponding to the greater trochanter 94. In the present embodiment, the rib belt 51 on the right side has the same structure as the rib belt 51 on the left side, and therefore its description is omitted.

[0077] like Figure 2 As shown by arrow A in FIG. 1 , when the swimsuit 1 is worn by twisting the hem 22, the rib 51 twists inward in the width direction starting from the upper end of the first inclined portion 51a. At this time, the supporting force in the inward rotation direction acts on the greater trochanter 94 from the rear to the front through the curved portion 51c.

[0078] like Figure 7As shown, in this embodiment, the rib belt 51 is formed by sequentially stacking a strong belt (a first belt T2 with a width of 10 mm and a second belt T3 with a width of 10 mm) T1 and a base fabric belt T4 of a woven or knitted fabric with a width of 20 mm. A hot melt adhesive H is arranged between these belts T2, T3, and T4 or between the main body 2 and the belt. After the outer edge portion of the width direction outer side of the front body fabric 31 (left front fabric 33d) and the outer edge portion of the width direction outer side of the back body fabric 32 (left rear fabric 33f and first rear lining 34e) are joined by an ultrasonic sewing machine, the rib belt 51 is heat-pressed to the joined portion. The left rear fabric 33f and the first rear lining 34e may also be bonded by the hot melt adhesive H before being joined to the left front fabric 33d. It is preferable to set the recovery side stress of the rib belt 51 at 30% elongation to be 0.5N or more and 10.73N or less, and in this embodiment, it is 3.88N, for example.

[0079] like Figure 1 and Figure 4 As shown, the crotch belt 52 extends along the inner thigh line 25 and the crotch portion 23 on the inner surface side of the main body 2. More specifically, the crotch belt 52 has a right inner thigh belt portion 52a extending along the right inner thigh line 25a, a left inner thigh belt portion 52b extending along the left inner thigh line 25b, and a crotch belt portion 52c extending in the width direction along the crotch portion 23.

[0080] The right inner thigh band 52a is inclined downwardly from the right end of the crotch 23 toward the outside in the width direction. The left inner thigh band 52b is inclined downwardly from the left end of the crotch 23 toward the outside in the width direction. In other words, when the swimsuit 1 is worn without twisting, the lower ends of the right inner thigh band 52a and the left inner thigh band 52b are located at the front side of the circumference of the left and right thighs 91, and are in an inverted V shape when viewed from the front. At this time, the lower ends of the right inner thigh band 52a and the left inner thigh band 52b are respectively located at the center side of the thigh 91 in the width direction. The recovery side stress of the crotch band 52 when it is elongated by 30% is preferably set to be greater than 0.159N and less than 7.30N, and in the present embodiment, for example, is 1.86N.

[0081] Figure 8 Yes Figure 1 The periphery of the crotch portion 23 indicated by the arrow VIII is enlarged and schematically shown as viewed from below. Fig. 9 Shown along Figure 8 The cross-sectional view of the IX-IX line, Fig.10 Shown along Figure 8 The cross-sectional diagram of line XX. Figure 8 to Figure 10As shown, the crotch belt 52 is formed by sequentially stacking a third belt T5 with a width of 10 mm and a base fabric belt T6 of a fabric or braid with a width of 20 mm. Hot melt adhesive H is respectively arranged between the third belt T5 and the base fabric belt T6, or between the main body 2 and the third belt T5.

[0082] like Figure 8 and Fig. 9 As shown, regarding the right inner thigh band 52a, after the rear edge of the inner side of the width direction of the front body fabric 31 (right front fabric 33e) and the front edge of the inner side of the width direction of the back body fabric 32 (back fabric 33b and back lining 34b) are joined by an ultrasonic sewing machine, the third tape T5 and the base fabric tape T6 are bonded to the joined portion. The left inner thigh band 52b has the same structure as the right inner thigh band 52a, so the description is omitted.

[0083] like Figure 8 and Fig.10 As shown, with respect to the crotch band portion 52c, after the lower edge of the front body fabric 31 and the lower edge of the back body fabric 32 are joined together using an ultrasonic sewing machine, the joined portion is sewn (S1), and the third tape T5 is adhered from the top of the sewn seam edge portion Y. The front body fabric 31 is a fabric in a state where the front lining 34a is bonded to the center fabric 33c via hot melt adhesive H, and the back body fabric 32 is a fabric in a state where the second back lining 34h is bonded to the right back fabric 33g via hot melt adhesive H.

[0084] like Figure 8 As shown, after the third tape T5 is bonded to the crotch belt portion 52c, a cutout portion G is formed in the crotch portion 23 at least at one place in the width direction to discontinue the third tape T5. In this embodiment, the cutout portion G is provided at two places.

[0085] In more detail, since the hot melt adhesive or the belt member is laminated on each joint portion where the front body fabric 31 and the back body fabric 32 are joined, the rigidity tends to be higher than other portions. In contrast, by providing the cutout portion G in the crotch belt portion 52c, the rigidity of the portion such as the crotch portion 23 that is intended to be soft when in contact with the wearer is reduced, and the wearer's movement can be prevented from being hindered. In other words, the cutout portion G functions as a rigidity reducing portion of the crotch portion 23.

[0086] like Figure 8 and Fig.10As shown, in the crotch belt portion 52c, a plurality of, namely three, locking seams (S2) are formed in a state where the third belt T5, the seam edge portion Y and the front body fabric 31 overlap. The locking seam S2 is cut into the central portion in the width direction of the main body portion 2 and is arranged on both sides of the central portion. By providing the locking seam S2, the tear strength of the crotch portion 23 can be improved, and the rigidity of the crotch portion 23 can be reduced compared to the case where the locking seam S2 is not cut and the locking seam is continuously formed along the crotch portion 23.

[0087] In the present embodiment, the locking slits S2 on both sides are provided so that their widthwise positions coincide with the widthwise positions of the cutoff portion G. By providing the locking slits S2 at positions corresponding to the cutoff portion G where the tear strength is lower than the tear strength of the portion where the cutoff portion G is not provided, the reduction in the tear strength of the cutoff portion G can be suppressed.

[0088] like Fig.10 As shown, in the crotch belt portion 52c, a base fabric tape T6 of a woven or knitted fabric having a width wider than the third tape T5 is joined to the back side (body surface side) of the third tape T5.

[0089] like Figure 1 As shown in FIG. 1 , when the swimsuit 1 is worn with the hem portion 22 twisted, the crotch band 52 twists inward in the width direction starting from the upper ends of the right inner thigh band portion 52a and the left inner thigh band portion 52b. At this time, the right inner thigh line 25a and the left inner thigh line 25b extend along a straight line L1 extending along the inner thigh of the wearer 9. In this specification, Figure 6 As shown, the straight line L1 is a straight line extending from a line connecting the inner ankle 95 and the medial epicondyle 96 of the femur to the crotch portion 23 .

[0090] like Figure 3 and Figure 5 As shown, each back strap 53 is arranged on the inner surface side of the main body 2, and has a first back strap 53a extending from the waist portion 21 to the hem portion 22 in the up and down direction, and a second back strap 53b branching from the middle position of the first back strap 53a and connected to the inner thigh strap portions 52a, 52b.

[0091] Each first back surface belt 53a extends from the buttocks 97 to the vicinity of the rear side of the knee 98. The first back surface belt 53a is arranged at a position corresponding to the hamstring of the wearer 9 in the width direction center portion of the thigh 91. Each second back surface belt 53b intersects with the first back surface belt 53a near the lower end of the buttocks 97, and is arranged so as to be wound around the thigh 91 from the inner side in the width direction while facing downward to the front side.

[0092] like Figure 4 and Figure 5As shown in FIG. 1 , the upper portion 53c of the second back strap 53b is inclined inwardly in the width direction toward the lower side on the back side, and the lower portion 53d is inclined outwardly in the width direction while further downwardly in the front side. The upper portion 53c is arranged at a position corresponding to the middle portion of the thigh 91 in the vertical direction from the vicinity of the lower portion of the buttocks 97, and the lower portion 53d is arranged at a position corresponding to the vicinity of the upper portion of the knee 98 from the middle portion of the thigh 91 in the vertical direction. By each second back strap 53b, when the swimsuit 1 is worn by twisting the hem portion 22, the right thigh inner strap portion 52a and the left thigh inner strap portion 52b are easily twisted from the lower end portion side toward the width direction inner side.

[0093] Fig.11 Yes Figure 5 The area indicated by the arrow XI is enlarged and a portion is schematically shown in cross section. Fig.11 As shown, in this embodiment, the first back tape 53a is formed by sequentially stacking a fourth tape T7 having a width of 10 mm, a fifth tape T8 having a width of 15 mm, and a clamping tape T9 having a width of 20 mm. Hot melt adhesive H is disposed between these tapes T7, T8, and T9 or between the main body 2 and the tapes. After the inner edge of the first rear lining 34f on the inner side in the width direction and the outer edge of the second rear lining 34h and the third rear lining 34j on the outer side in the width direction are joined to the left rear fabric 33f via the hot melt adhesive H, the first back tape 53a is thermally pressed to the joined portion. The inner edge of the first rear lining 34f on the inner side in the width direction and the outer edge of the second rear lining 34h and the third rear lining 34j on the outer side in the width direction are pasted at intervals in the width direction of the first back tape 53a. The recovery side stress of the first back surface tape 53a when stretched by 30% is preferably set to 0.6N or more and 14.74N or less, and is 5.43N, for example, in the present embodiment.

[0094] The second back tape 53b is formed by sequentially laminating the sixth tape T10 having a width of 10 mm and the base fabric tape T11 of a fabric or a woven fabric having a width of 20 mm. A hot melt adhesive H is disposed between these tapes T10 and T11 or between the main body 2 and the sixth tape T10. After the lower edge of the second back lining 34h and the upper edge of the third back lining 34j are joined to the left back fabric 33f via the hot melt adhesive H, the second back tape 53b is thermally pressed to the joined portion. The lower edge of the second back lining 34h and the upper edge of the third back lining 34j are pasted at intervals in the width direction of the second back tape 53b. The recovery side stress of the second back tape 53b when it is elongated by 30% is preferably set to be greater than 0.77N and less than 10.64N, and in the present embodiment, for example, is 3.87N. In other words, the tensile stress of the second back tape 53b is smaller than the tensile stress of the first back tape 53a.

[0095] like Figure 4 and Figure 5 As shown, by also pasting an abdominal center band 54 and a back center band 55 on the main body 2, each joint is strengthened. The abdominal center band 54 is set at the joint between the central fabric 33c and the left front fabric 33d and the right front fabric 33e, and the back center band 55 is set at the joint between the left rear fabric 33f and the right rear fabric 33g in the center of the back.

[0096] like Figure 1 As shown, the swimsuit 1 has a mark P for guiding the twisting amount. In other words, by wearing the swimsuit 1 while twisting the hem portion 22 in accordance with the mark P, the swimsuit 1 is twisted from the waist portion 21 to the hem portion 22, causing the hip joint 93 of the wearer 9 to internally rotate. In the present embodiment, the mark P is formed by a locking seam sewn with a thread of a different color from the sewing thread. In the present embodiment, the mark P is arranged at a circumferential position that is substantially consistent with the point where the inner thigh line 25 and the hem portion 22 intersect. Fig.12 2 shows a swimsuit 1 in a state where the hem portion 22 is twisted and worn. When wearing the swimsuit 1, the hem portion 22 is twisted while aligning the mark P and the inner thigh line 25 shown by the double-dashed line with the inner thigh point P2 of the wearer, as shown in FIG. Fig.12 As shown by the arrow B, the hip joint of the wearer 9 is rotated inward from the waist portion 21 to the hem portion 22.

[0097] Fig.13 2 is a schematic diagram schematically showing the hem portion 22 of the swimsuit 1 in a state where the swimsuit 1 is worn without being twisted. Fig.13 As shown, the mark P is located on the front side of the inner thigh point P2 of the wearer 9 in the circumferential direction of the hem 22. More specifically, the ratio of the distance D1 from the mark P to the inner thigh point P2 of the wearer 9 to the circumference D of the hem 22 is set to be 10.8% or more and 21.6% or less. The ratio of the distance D1 from the mark P to the inner thigh point P2 of the wearer to the circumference D of the hem 22 can also be said to be the twist amount of the swimsuit 1. The predetermined twist amount, the upper and lower limits of the twist amount, and the method of setting the upper and lower limits are described in detail in the embodiment.

[0098] like Figure 6 As shown, regarding the inner thigh point P2, in the present embodiment, when the swimsuit 1 is worn on a specific human body model (human body model manufactured by Qicai Co., Ltd.: MD-20A (Men)), the point where the straight line L1 connecting the inner ankle 95 and the medial epicondyle 96 of the femur intersects with the hem 22 of the swimsuit 1 is set as the inner thigh point P2.

[0099] Thus, when the swimsuit 1 is twisted and worn, the inner thigh line 25 is also twisted toward the inner side of the thigh 91. On the other hand, the length of the inner thigh line 25 is set so that the lower end of the inner thigh line 25 after the swimsuit 1 is twisted and worn is arranged at an appropriate position. Figure 6 As shown, the ratio of the separation distance D3 between the hem 22 and the knee center 99 of the swimsuit 1 to the length L21 of the thigh 91 is set to be greater than 13% and less than 21%, for example, 13%. When the ratio of the separation distance D3 is less than 13.5%, the hem 22 is likely to overlap with the height position of the knee during twisting (when the mark P is arranged on the inner side of the thigh), and sometimes the adjustment cannot be satisfied. If the ratio of the separation distance D3 exceeds 20.9%, the length of the fabric from the waist 21 to the hem 22 is insufficient, and the internal rotation effect is likely to be reduced.

[0100] In this manual, if Figure 6 As shown, the center of the patella of the specific human body model 90 is set as the knee center 99, and the length of the straight line L2 connecting the center of the patella 99 and the anterior superior iliac spine 100 is set as the length L21 of the thigh 91. The separation distance D3 between the hem portion 22 and the knee center 99 is set as the distance between the point where the straight line L2 and the hem portion 22 intersect when the swimsuit 1 is worn on the specific human body model 90, and the knee center 99. In the present embodiment, the separation distance D3 between the hem portion 22 and the knee center 99 may be set to be greater than 63.7 mm and less than 102.9 mm, for example, set to 66 mm.

[0101] Fig.14 (a) shows a front view of the first women's swimsuit 101, Fig.14 (b) shows a side view of the first women's swimsuit 101, Fig.14 (c) shows a rear view of the first women's swimsuit 101, Fig.14 (d) is a schematic diagram showing the hem portion 122 of the first women's swimsuit 101 in a state of being worn without being twisted. Fig.15 (a) shows a front view of the second men's swimsuit 201, Fig.15 (b) shows a side view of the second men's swimsuit 201, Fig.15 (c) shows a rear view of the second men's swimsuit 201, Fig.15 (d) is a schematic diagram showing the hem portion 222 of the second men's swimsuit 201 in a state of being worn without being twisted. Fig.16 (a) shows a front view of a second women's swimsuit 301, Fig.16 (b) shows a side view of the second women's swimsuit 301, Fig.16 (c) shows a rear view of the second women's swimsuit 301, Fig.16(d) is a schematic diagram showing the hem 322 of the second women's swimsuit 301 in a state of being worn without twisting. Figure 14 to Figure 16 , the structures of the first women's swimsuit 101, the second men's swimsuit 201 and the second women's swimsuit 301 are described.

[0102] like Fig.14 As shown, the first women's swimsuit 101 comprises: a main body 102, which has an upper part 111 covering the upper body and a lower part 112 covering the lower body; an anti-slip component 104, which is adhered to the inner side of the main body 102 and is used to improve the tightness and fit between the swimsuit 101 and the wearer's skin; a belt component 105, which is adhered to the main body 2; and a mark P10, which guides the predetermined twisting amount of the hem part 22.

[0103] The main body 102 is made of stretch fabric like the first men's swimsuit 1. A chest lining 111a is arranged around the chest of the main body 102, a waist lining 112a is arranged around the waist, and an inner thigh lining 112b is arranged on the inner thigh of the thigh 91. The first stretch fabric ( Fig.14 The fabric in the region a1 of the second stretch fabric has the same stress at 30% elongation as the first stretch fabric of the first men's swimsuit 1. Fig.14 The fabric of the region b1 of the first men's swimsuit 1 has the same stress at 30% elongation as the second stretch fabric of the first men's swimsuit 1. In the main body 102, the anti-slip member 104 is bonded to the hem 122, the inner thigh band 152 is bonded to the inner thigh line 125, and the back band 153 is bonded to the back side. The back band 153 is provided on the inner surface side of the main body 102 and has: a first back band 153a extending from the waist 121 to the hem 122 in the vertical direction; and a second back band 153b branching from the middle position of the first back band 153a and connected to the inner thigh band 152.

[0104] The first back strap 153a is arranged at a position corresponding to the hamstring of the wearer 9 in the widthwise center of the thigh 91. Each second back strap 153b crosses the first back strap 153a near the lower end of the buttocks 97 and is arranged so as to be directed downward and inward in the widthwise direction around the thigh 91. The lower end of the second back strap 153b is connected to the inner thigh strap 152 at the crotch. In other words, the first women's swimsuit 101 is not provided with the ribbed strap 51.

[0105] The ratio (twisting amount) of the distance D11 from the mark P10 to the inner thigh point P12 of the wearer 9 to the circumference D10 of the hem portion 122 is set to be 11.7% or more and 23.4% or less. It should be noted that the inner thigh point P12 is set by wearing the first women's swimsuit 101 on a specific human body model (human body model manufactured by Nanashi Co., Ltd.: WD-20A (women)). The twisting amount of the first women's swimsuit 101 is greater than the twisting amount of the first men's swimsuit 1. Since the first women's swimsuit 101 is not provided with the rib belt 51, there is a tendency that the twisting amount becomes greater than the twisting amount of the first men's swimsuit 1. On the other hand, the first women's swimsuit 101 has an upper part 111, so the length of the thigh 91 in the body length direction is longer than that of the first men's swimsuit 1, and the area of ​​the twisted fabric becomes larger. Thus, when the swimsuit 101 is worn, if the hem 122 is twisted, the waist portion above the anterior superior iliac spine to the hem 122 is twisted, so that the inner rotation supporting function of the fabric can be effectively exerted. The method of setting the twist amount will be described in detail in the embodiment.

[0106] The ratio of the distance D103 between the hem 122 and the knee center 99 of the swimsuit 1 to the length L121 of the thigh 91 is set to 18.1%, for example. In the present embodiment, the distance D103 between the hem 22 and the knee center 99 is set to 85 mm, for example.

[0107] like Fig.15 As shown, the second men's swimsuit 201 comprises: a main body 202; an anti-slip component 204, which is adhered to the inner side of the main body 202 and is used to improve the close contact and fit between the swimsuit 201 and the wearer's skin; a belt component 205, which is adhered to the main body 202; and a mark P20, which guides the predetermined twisting amount of the hem 222.

[0108] The main body 202 is made of stretch fabric like the first men's swimsuit 1. A waist lining 212a is arranged around the waist of the main body 202. In other words, no lining is arranged in the part other than around the waist. The first stretch fabric that constitutes the fabric of the main body 202 and is located on the front side of the thigh 91 and the second stretch fabric that is located on the back side of the thigh 91 are composed of a continuous piece of fabric. The first stretch fabric ( Fig.15 The fabric of area a2) and the second stretch fabric ( Fig.15 The fabric in the region b2 of the second men's swimsuit 201 has the same stress at 30% elongation as the first stretch fabric of the first men's swimsuit 1. In the main body 202, the anti-slip member 204 is bonded to the waist portion 221 and the hem portion 222, and the crotch belt 252 is bonded to the inner thigh line 225. In other words, the rib belt 51 and the back belt 53 are not provided in the second men's swimsuit 201.

[0109] The ratio (twist amount) of the distance D21 from the mark P20 to the inner thigh point P22 of the wearer 9 to the circumference D20 of the hem portion 222 is set to be 14.3% or more and 28.6% or less. It should be noted that, similarly to the first men's swimsuit 1, the second men's swimsuit 201 is worn on a specific human model (human model: MD-20A (men's) manufactured by Nanashi Co., Ltd.) and the inner thigh point P22 is set. The twist amount of the second men's swimsuit 201 is larger than the twist amounts of the first men's swimsuit 1 and the first women's swimsuit 101. Since the second men's swimsuit 201 is not provided with the rib belt 51, there is a tendency that the twist amount becomes larger than the twist amount of the first men's swimsuit 1. In addition, the second men's swimsuit 201 cannot expand the area of ​​the twisted fabric like the first women's swimsuit 101, so the twist amount of the second men's swimsuit 201 is set larger than that of the first women's swimsuit 101. The method of setting the twist amount will be described in detail in the examples.

[0110] The ratio of the distance D203 between the hem 222 and the knee center 99 of the swimsuit 1 to the length L221 of the thigh 91 is set to 15.9%, for example. In the present embodiment, the distance D203 between the hem 222 and the knee center 99 is set to 78 mm, for example.

[0111] like Fig.16 As shown, the second women's swimsuit 301 comprises: a main body 302, which has an upper part 311 covering the upper body and a lower part 312 covering the lower body; an anti-slip component 304, which is adhered to the inner side of the main body 302 and is used to improve the tightness and fit between the swimsuit 301 and the wearer's skin; a belt component 305, which is adhered to the main body 302; and a mark P30, which guides the predetermined twisting amount of the hem 322.

[0112] Fig.17 3 is a diagram schematically showing a state where the second women's swimsuit 301 is unfolded. Fig.17 As shown, the main body 302 is made of stretch fabric like the first men's swimsuit 1. A chest lining 311a is arranged on the chest of the main body 302, and a waist lining 312a is arranged around the waist. The first stretch fabric on the front side of the thigh 91 and the second stretch fabric on the back side of the fabric constituting the main body 302 are made of a continuous piece of fabric. The first stretch fabric ( Fig.16 The fabric of area a3) and the second stretch fabric ( Fig.16The fabric in the region b3 of the second swimsuit 301 has the same stress at 30% elongation as the first stretch fabric of the first men's swimsuit 1. The main body 302 is made of stretch fabric like the first men's swimsuit 1. The anti-slip member 304 is bonded to the waist portion 321 and the hem portion 322, and the crotch belt 352 is bonded to the inner thigh line 325. The rib belt 51 and the back belt 53 are not provided in the second women's swimsuit 301.

[0113] The ratio (twist amount) of the distance D31 from the mark P30 to the inner thigh point P32 of the wearer 9 to the circumference D30 of the hem 322 is set to be 11.55% or more and 23.1% or less. It should be noted that, similarly to the first women's swimsuit 101, the second women's swimsuit 301 is worn on a specific human model (human model: WD-20A (women's) manufactured by Nanashi Co., Ltd.) to set the inner thigh point P32. The twist amount of the second women's swimsuit 301 is substantially the same as that of the first women's swimsuit 101. Similar to the first women's swimsuit 101, the second women's swimsuit 301 is not provided with the rib belt 51, so there is a tendency that the twist amount becomes larger than the twist amount of the first men's swimsuit 1. On the other hand, since the upper part 311 is provided, the length of the thigh 91 in the body length direction is longer than that of the first men's swimsuit 1 in the body length direction, and the area of ​​the twisted fabric becomes larger. Thus, when the second women's swimsuit 301 is worn, if the hem 322 is twisted, the waist portion above the anterior superior iliac spine to the hem 322 is twisted, so that the inner rotation supporting function of the fabric can be effectively exerted. The method of setting the twist amount will be described in detail in the embodiment.

[0114] The ratio of the distance D303 between the hem 322 and the knee center 99 of the swimsuit 301 to the length L321 of the thigh 91 is set to 20.9%, for example. In the present embodiment, the distance D303 between the hem 322 and the knee center 99 is set to 98 mm, for example.

[0115] Here, the relationship between the structure and the twisting amount of the first men's swimsuit 1, the first women's swimsuit 101, the second men's swimsuit 201, and the second women's swimsuit 301 will be summarized and described below.

[0116] On the inner thigh of the back side ( Figure 1 The stress at 30% elongation in the area b) is greater than that in the outer thigh area ( Figure 1 In the first men's swimsuit 1 having the ribbed belt 51, the predetermined twisting amount that does not cause wrinkles when the hem portion 22 is twisted is 21.6%. The ratio of the distance D1 from the mark P to the inner thigh point P2 of the wearer 9 to the circumference D of the hem portion 22 of the first men's swimsuit 1 (hereinafter also referred to as "twisting amount") is set to be 10.8% or more and 21.6% or less.

[0117] On the inner thigh of the back side ( Fig.14 The stress at the time of 30% elongation of the b1 area) is greater than that at the outside of the thigh on the front side ( Fig.14 In the first women's swimsuit 101 having an upper part 111 covering the upper body and a lower part 112 covering the lower body, the predetermined twisting amount for not causing wrinkles when the hem 122 is twisted is 23.4%. The twisting amount of the first women's swimsuit 101 is set to be not less than 11.7% and not more than 23.4%.

[0118] The stress at 30% elongation is on the outside of the thigh on the front side ( Fig.15 area a2) and the inner thigh area on the back side ( Fig.15 The region b2) of the second men's swimsuit 201 is set to a predetermined tensile stress, and in the second men's swimsuit 201 without ribs, the predetermined twisting amount that does not cause wrinkles when the hem portion 222 is twisted is 28.6%. The twisting amount of the second men's swimsuit 201 is set to be greater than 14.3% and less than 28.6%.

[0119] The stress at 30% elongation is on the outside of the thigh on the front side ( Fig.16 area a3) and the inner thigh area on the back side ( Fig.16 The region b3) of the second women's swimsuit 301 is set to a predetermined tensile stress, and the predetermined twisting amount that does not cause wrinkles when the hem 322 is twisted is 23.1%. The twisting amount of the second women's swimsuit 301 is set to be greater than 11.55% and less than 23.1%.

[0120] It should be noted that when the hem portions 22, 122, 222, 322 of the first men's swimsuit 1, the first women's swimsuit 101, the second men's swimsuit 201, and the second women's swimsuit 301 are twisted and worn so that the marks P, P10, P20, P30 are aligned with the inner thigh points P2, P12, P22, P32, respectively, a wearing error of about 1 cm may occur on the front and rear sides of the twisting direction with the inner thigh points P2, P12, P22, P32 as the center. However, even when such a wearing error occurs, the effect brought about by the internal rotation can be exerted.

[0121] [Example]

[0122] The swimsuits of the comparative examples and the examples were subjected to sensory evaluation, swimming efficiency evaluation, and swimming speed evaluation. Table 1 shows the measurement results and evaluation test results.

[0123] Comparative Example 1 is a state where a conventional swimsuit is worn without twisting. Comparative Example 2 is a state where the swimsuit of the present invention is worn with the swimsuit twisted beyond a predetermined twist amount. Example 1 is a state where the swimsuit of the present invention is worn with the swimsuit twisted at 50% of the predetermined twist amount. Example 2 is a state where the swimsuit 1 of the present invention is worn with the swimsuit twisted at a predetermined twist amount.

[0124] In Comparative Example 2, Example 1 and Example 2, Figure 1 The first men's swimsuit shown is 1, Fig.14 The first women's swimsuit 101 is shown. Fig.15 The second men's swimsuit 201 is shown as well Fig.16 The second women's swimsuit 301 shown is one of the four swimsuits of the present invention.

[0125] The predetermined twisting amount is different for each swimsuit (first men's swimsuit 1, first women's swimsuit 101, second men's swimsuit 201, second women's swimsuit 301). In other words, a suitable twisting amount is set for each swimsuit. The setting method of each predetermined twisting amount is determined by having a plurality of subjects (20 male and female college students) wear the swimsuit of the present invention in a twisted state and then evaluate the wearing feeling (wearability).

[0126] Specifically, the twisting amount that generates the internal rotation support force by twisting each swimsuit and does not cause deterioration of the wearing feeling such as large wrinkles is set to the predetermined twisting amount of each of the first men's swimsuit 1, the first women's swimsuit 101, the second men's swimsuit 201, and the second women's swimsuit 301. In the present embodiment, the large wrinkles generated by twisting the swimsuit are wrinkles that become water resistance during swimming, and generally, the wrinkles are preferably 3 mm or less. In the present embodiment, the wrinkles are set to protrude from the surface of the swimsuit in the worn state by 2 mm or more.

[0127] The predetermined twist amount in each swimsuit is set to 21.6% in the first men's swimsuit 1, 23.4% in the first women's swimsuit 101, 28.6% in the second men's swimsuit 201, and 23.1% in the second women's swimsuit 301. In other words, each twisting amount is a ratio of the distance D1, D11, D21, D31 between the marks P, P10, P20, P30 and the inner thigh points P2, P12, P22, P32 of the wearer to the circumference D, D10, D20, D30 of the hem 22, 122, 222, 322 in each wearing state. Therefore, each mark P, P10, P20, P30 is arranged at a position away from each inner thigh point P2, P12, P22, P32 by a distance D1, D11, D21, D31 (each circumference D, D10, D20, D30×each twisting amount).

[0128] Sensory evaluation of wearing comfort was conducted by subjects (20 male and female college students) wearing the swimsuits of Comparative Example 1, Comparative Example 2, Example 1, and Example 2 in various wearing methods and evaluating the wearing feeling. More specifically, the case where large wrinkles were formed when wearing the swimsuit was evaluated as unacceptable (×).

[0129] The evaluation of swimming efficiency was conducted by using the average value of the Strouhal number St during the full-strength dolphin kick of the subjects wearing the swimsuits of Comparative Example 1, Example 1, and Example 2 in various wearing methods. The so-called Strouhal number is calculated by the following formula. The Strouhal number St is a dimensionless number obtained by normalizing the kick amplitude A using the ratio of the average swimming speed U to the kick frequency f. The lower the value of the Strouhal number St, the better the efficiency.

[0130]

Mathematical formula 1

[0131] St=A·f / U

[0132] St: Strouhal number, A: kick amplitude, U: average swimming speed, f: kick frequency.

[0133] In the evaluation of swimming efficiency, one cycle of the dolphin-style kick in the water is appropriately set to the distance from the toes to the highest point in the vertical direction and then to the next highest point. The data of 10 consecutive kicking cycles are used for analysis. The kicking amplitude A and the kicking frequency f are calculated based on the toes coordinate data. The kicking amplitude A is defined as the vertical distance from the highest point in the vertical direction of the toes to the lowest point in one kicking cycle, and the kicking frequency f is defined as the reciprocal of the time required for one kicking cycle.

[0134] The swimming speed evaluation is a value obtained by averaging the results of measuring the swimming speeds of the subjects wearing the swimsuits of Comparative Example 1, Example 1, and Example 2 in various wearing methods when swimming 15 m with full force dolphin kick.

[0135]

Table 1

[0136]

[0137] As shown in Table 1, if the predetermined twisting amount is exceeded as in Comparative Example 2, the wearing comfort is likely to deteriorate. More specifically, in Comparative Example 2, due to excessive twisting, the wearing pressure is uneven, which causes discomfort when wearing. In addition, due to excessive internal rotation support, the wearer's movement to the external rotation side is hindered. Furthermore, large wrinkles are generated on the swimsuit, which acts as resistance. Good wearing comfort was obtained for Comparative Example 1, Example 1, and Example 2. According to the results of Table 1, it is preferred to set the predetermined twisting amount of the swimsuit of the present invention to the upper limit of the twisting amount. It should be noted that for Comparative Example 2, in which the wearing comfort was evaluated as ×, the evaluation of swimming efficiency and swimming speed was not implemented.

[0138] The results of the evaluation test of the swimming speed and the swimming efficiency showed a generally consistent tendency, and in Examples 1 and 2 in which the swimsuit was twisted at a predetermined twist amount while being worn, the swimming speed and the swimming efficiency were improved compared to Comparative Example 1. In particular, in Example 2, the swimming efficiency was improved by 3% and the swimming speed was improved by 2%. Based on this result, it is preferred that the twist amount of 50% of the predetermined twist amount be set as the lower limit of the twist amount.

[0139] The swimsuit 1 of this embodiment has the following effects.

[0140] (1) The method of wearing the swimsuit 1 is to wear the swimsuit 1 which is made of a stretchable fabric that covers at least a portion of the lower body from the vicinity of the waist 92 and has a predetermined wearing pressure, and the swimsuit 1 is worn by twisting the hem 22 in such a way that a mark P indicating the twist amount provided on the swimsuit 1 is located at a predetermined position.

[0141] According to this structure, the swimsuit 1 with a predetermined wearing pressure can be appropriately twisted using the mark P showing the twist amount, and a desired twisting force can be generated. As a result, for example, from the waist 92 to the knee 98 of the wearer 9 contacted by the swimsuit 1, it is easy to act on the desired supporting force in a way that the hip joint 93 rotates inward.

[0142] (2) The swimsuit 1 has a hem portion 22 through which the legs are inserted, and a hem band 42 is disposed on the hem portion 22 to prevent the hem portion 22 from sliding relative to the thigh portion 91. For example, when the hem portion 22 is twisted and worn, if there is a slip between the hem portion 22 and the wearer 9, it is difficult to maintain the state in which the hem portion 22 is twisted relative to the waist portion 21 when the hem portion 22 is twisted and worn, and it is difficult to exert a supporting force in the inner rotation direction. In contrast, by preventing the hem portion 22 from sliding relative to the wearer 9, it is easy to fix the hem portion 22 in the state in which the hem portion 22 is twisted relative to the waist portion 21. In addition, in the present embodiment, the hem band 42 is made of a silicon-containing band to prevent slipping with the skin surface of the wearer, so that even if the hem portion 22 is twisted, it will not return to the original position and the inner rotation function can be easily exerted.

[0143] (3) The swimsuit 1 has a waist portion 21 disposed at the upper edge and located at the waist 92 of the wearer 9, and a waist band 41 is disposed at the waist portion 21 to suppress the deviation of the waist portion 21 relative to the waist 92. According to this structure, the waist portion 21 is in close contact with the skin of the wearer 9, thereby suppressing the sliding of the waist portion 21 relative to the wearer 9. More specifically, if sliding occurs between the waist portion 21, the hem portion 22 and the wearer 9, it is difficult to maintain the twisted state of the hem portion 22 relative to the waist portion 21 when the wearer 9 twists the hem portion 22 to wear it, and it is difficult to apply a supporting force in the inner rotation direction. In contrast, by suppressing the sliding of the waist portion 21 relative to the waist 92, the hem portion 22 can be twisted while the waist portion 21 is fixed. In the present embodiment, the waist band 41 is made of a silicon-containing band to prevent slipping on the wearer's skin surface, similarly to the hem band 42 . Therefore, when the hem portion 22 is twisted, the waist portion 21 is prevented from deviating, making it easier to exert the internal rotation function.

[0144] (4) The twisting amount is set to be greater than 50% of a predetermined twisting amount that does not cause wrinkles when the hem portion 22 is twisted and worn, and less than the predetermined twisting amount. The predetermined twisting amount refers to the limit twisting amount that does not cause wrinkles when the swimsuit is twisted and worn, in other words, the twisting amount that does not hinder wearability. According to this structure, the twisting amount can be appropriately set, so it is easy to obtain the inward rotation effect more effectively. Specifically, when the twisting amount is less than 50% of the predetermined twisting amount, it is difficult to obtain the inward rotation effect. On the other hand, if the twisting amount exceeds the predetermined twisting amount, wrinkles that become water resistance are likely to be generated in the swimsuit. In addition, sometimes due to excessive twisting, the wearing pressure is likely to deviate, which is likely to cause discomfort to the wearer, or the inward rotation effect becomes too large, and the movement is excessively suppressed.

[0145] (5) The mark P may also be composed of the inner thigh line 25. For example, the inner thigh line 25 is inclined in a manner so as to be located on the front side of the wearer 9 toward the hem portion 22. The desired twisting amount can be obtained simply by twisting the hem portion 22 so that it is located on the inner thigh of the wearer 9.

[0146] (6) When the swimsuit 1 is worn on a predetermined human body model without twisting, the ratio of the separation distance D3 from the center 99 of the patella to the hem 22 to the length L21 of the thigh 91 of the predetermined human body model is 13% or more and 21% or less. According to this configuration, even when the marker P is set as the inner thigh line 25, the length of the inner thigh line 25 is set so that the lower end of the inner thigh line 25 after twisting is located at a desired vertical position, thereby preventing the inner thigh line 25 from becoming too long after twisting.

[0147] (7) The swimsuit 1 includes a ribbed belt 51, which is located on the outside in the width direction and extends from the waist portion 21 to the hem portion 22, and has a curved portion 51c at a portion corresponding to the greater trochanter 94 of the wearer. According to this structure, if the swimsuit 1 is twisted while being worn, the ribbed belt 51 is also twisted integrally. Therefore, the ribbed belt 51 acts in a manner that the greater trochanter 94 is directed inward, making it easier to more effectively internally rotate the hip joint 93.

[0148] (8) The swimsuit 1 comprises: a first back strap 53a which is in the form of a strap extending from the left and right buttocks 97 to the thighs 91 along the body length direction and has a tensile stress higher than that of other parts; and a second back strap 53b which intersects with the first back strap 53a near the lower end of the buttocks 97 and extends inward in the width direction toward the hem 22, and has a tensile stress higher than that of other parts.

[0149] According to this structure, the back side of the thigh 91 can be easily pulled upward by the first back strap 53a and the second back strap 53b in the prone position, so it is easy to maintain an efficient posture when kicking up while moving the feet up and down in the prone position.

[0150] (9) The lower portion 53d of the second back strap 53b is wrapped around the front, and the lower end portion is located near the lower end of the inner thigh line 25. Therefore, the inner thigh line 25 is easily twisted inward by the second back strap 53b intersecting with the first back strap 53a, and the twisted state of the hem 22 is easily maintained.

[0151] (10) A rigidity reducing portion G for reducing rigidity is provided in the crotch portion 23 which corresponds to the crotch portion of the wearer 9 and is continuous with the inner thigh line 25. According to this structure, even when the rigidity is increased by arranging a belt member for ensuring tear strength in the crotch portion 23, the rigidity of the crotch portion 23 can be reduced, and the hem portion 22 can be easily twisted when twisting the wearer's clothing.

[0152] In this embodiment, an example in which the mark P is composed of a locking seam is described, but the present invention is not limited to this. The mark P can also be composed of the inner thigh line 25, or can be composed of painting, embroidery, a semi-laser-based backing material, a seam tape, etc.

[0153] It should be noted that the method of wearing the swimsuit of the present invention is not limited to the configuration of the above-mentioned embodiment, and various modifications can be made.

[0154] [Supplementary Note] The present disclosure includes the following aspects.

[0155] [Method 1]

[0156] A method for wearing a swimsuit, wherein the swimsuit is made of a stretchable fabric that covers at least a portion of the lower body from the vicinity of the waist and has a predetermined wearing pressure, wherein:

[0157] The swimsuit is worn by twisting the hem portion of the swimsuit so that the mark provided on the swimsuit is located at a predetermined position.

[0158] [Method 2]

[0159] A swimsuit used in the method for wearing a swimsuit according to embodiment 1,

[0160] The swimsuit has a hem portion through which the legs are inserted.

[0161] The hem portion is provided with a hem band that suppresses sliding of the hem portion relative to the leg.

[0162] [Method 3]

[0163] The swimsuit according to aspect 2,

[0164] The swimsuit has a waist portion disposed at the upper edge and located at the waist of the wearer.

[0165] A waist belt is disposed at the waist portion to suppress the waist portion from sliding relative to the waist portion.

[0166] [Method 4]

[0167] The swimsuit according to aspect 2 or aspect 3,

[0168] The twist amount is set to be not less than 50% of a predetermined twist amount at which wrinkles are not generated when the hem portion is twisted and worn, and not more than the predetermined twist amount.

[0169] [Method 5]

[0170] The swimsuit according to any one of aspects 2 to 4,

[0171] The marking consists of the inner thigh line.

[0172] [Method 6]

[0173] The swimsuit according to any one of aspects 2 to 5,

[0174] When the swimsuit is worn on a predetermined human body model without twisting, a ratio of a separation distance from a center of the patella to the hem portion to a length of a thigh of the predetermined human body model is 13% or more and 21% or less.

[0175] [Method 7]

[0176] The swimsuit according to any one of aspects 2 to 6,

[0177] The swimsuit includes a rib belt, the rib belt being located on the outer side in the width direction, extending from the waist portion to the hem portion, and having a curved portion at a portion corresponding to the greater trochanter of the wearer.

[0178] [Method 8]

[0179] The swimsuit according to any one of aspects 2 to 7,

[0180] The swimsuit comprises: a first back strap, which extends from the left and right buttocks to the thighs respectively along the body length direction and has a tensile stress higher than that of other parts; and a second back strap, which crosses the first back strap near the lower end of the buttocks and extends in a manner located inside in the width direction toward the hem portion and has a tensile stress higher than that of other parts.

[0181] [Method 9]

[0182] The swimsuit according to embodiment 8,

[0183] The lower side portion of the second back belt is wrapped around the front side, and the lower end portion is located near the lower end of the inner thigh line.

[0184] [Method 10]

[0185] The swimsuit according to any one of aspects 2 to 9,

[0186] The swimsuit has a crotch portion corresponding to the crotch of the wearer and continuous with the inner thigh line.

[0187] The crotch portion is provided with a rigidity reducing portion for reducing rigidity.

Claims

1. A method for wearing a swimsuit, characterized in that: The swimsuit is made of a stretchable fabric that covers at least a portion of the lower body from the vicinity of the waist and has a predetermined wearing pressure. The method for wearing the swimsuit includes twisting the hem of the swimsuit to wear the swimsuit so that the mark provided on the swimsuit is located at a predetermined position.

2. A swimsuit, characterized in that: The swimsuit is a swimsuit used in the swimsuit wearing method according to claim 1, The swimsuit has a hem portion through which the legs are inserted. The hem portion is provided with a hem band that suppresses sliding of the hem portion relative to the leg.

3. The swimsuit according to claim 2, characterized in that: The swimsuit has a waist portion disposed at the upper edge and located at the waist of the wearer. The waist portion is provided with a waist belt for suppressing the waist portion from sliding relative to the waist.

4. The swimsuit according to claim 2 or 3, characterized in that: The twist amount is set to be not less than 50% of a predetermined twist amount at which wrinkles are not generated when the hem portion is twisted and worn, and not more than the predetermined twist amount.

5. The swimsuit according to claim 2 or 3, characterized in that: The marking consists of the inner thigh line.

6. The swimsuit according to claim 2 or 3, characterized in that: When the swimsuit is worn on a predetermined human body model without twisting, a ratio of a separation distance from a center of the patella to the hem portion to a length of a thigh of the predetermined human body model is 13% or more and 21% or less.

7. The swimsuit according to claim 3, characterized in that: The swimsuit includes a rib belt, which is located on the outer side in the width direction, extends from the waist portion to the hem portion, and has a curved portion at a portion corresponding to the greater trochanter of the wearer.

8. The swimsuit according to claim 2 or 3, characterized in that: The swimsuit has: A first back strap extending from the left and right buttocks to the thighs along the length of the body, and the tensile stress of the first back strap is higher than the tensile stress of other parts; as well as The second back surface belt intersects the first back surface belt near the lower end of the buttocks and extends so as to be located inside in the width direction toward the hem portion, wherein the tensile stress of the second back surface belt is higher than that of other portions.

9. The swimsuit according to claim 8, characterized in that: The lower part of the second back surface belt is wrapped around the front surface, and the lower end part is located near the lower end of the inner thigh line.

10. The swimsuit according to claim 2 or 3, characterized in that: The swimsuit has a crotch portion corresponding to the crotch of the wearer and continuous with the inner thigh line. The crotch portion is provided with a rigidity reducing portion for reducing rigidity.

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