Clothing

Abstract

To provide clothing that reduces air resistance while cycling. [Solution] The garment 1 has a body 10 having a front body 11 and a back body 12, a sleeve portion 20, at least two groups of protrusions 40, and a flow channel 50. The groups of protrusions 40 are provided in the upper arm region 20c corresponding to the upper arm when the body 20 is laid flat with its side facing forward. The groups of protrusions 40 extend in the front-rear direction. The flow channel 50 is defined between the two groups of protrusions 40 and guides air in the rearward direction.

Description

Technical Field

[0001] This disclosure relates to clothing.

Background Art

[0002] Patent Document 1 discloses cycling wear.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] According to the cycling wear disclosed in Cited Document 1, a linear first protrusion extending from the cuff to the shoulder opening and a linear second protrusion extending from the shoulder opening toward the back are provided on the outer surface of the sleeve. By means of these protrusions, the air resistance during cycling is reduced. On the other hand, there is a demand for cycling wear that can further reduce air resistance, and there is room for improvement from the perspective of further reducing air resistance. [[ID=,37]]

[0005] An object is to provide clothing that can reduce air resistance during cycling.

Means for Solving the Problems

[0006] This disclosure a body having a front body and a back body, sleeve portions, at least two convex portions provided in an upper arm region corresponding to the upper arm of the wearer, extending in the front-rear direction, on the outer surface of the sleeve portion, which is the opposite side of the inner surface that contacts the body, in a side flat placement posture where the side surface of the body faces the front; a flow path defined between the two convex portions, extending in the front-rear direction, for guiding air backward We provide clothing that is equipped with [specific features / features].

[0007] According to the garment described herein, the two protrusions and the defined airflow channel between them reduce the air resistance along the surface of the sleeve. As a result, the air resistance experienced by the rider while cycling can be reduced, allowing for faster cycling speeds. [Brief explanation of the drawing]

[0008] [Figure 1] This is a front view of the garment according to this embodiment. [Figure 2] This is a front view of the garment according to this embodiment, laid flat. [Figure 3] The two protrusions and the flow path according to this embodiment are shown. [Figure 4] This is a cross-sectional view of the convex portion along section IV-IV in Figure 3. [Figure 5] This is a rear view of the garment according to this embodiment. [Figure 6] This shows the riding posture of a mannequin wearing the clothing according to this embodiment. [Figure 7] The fluid analysis results when the inclination angle of the convex portion is changed are shown. [Figure 8] The results of a wind tunnel experiment on the garment according to this embodiment are shown. [Figure 9] The results of a wind tunnel experiment on the garment according to this embodiment are shown. [Figure 10] The results of a wind tunnel experiment on the garment according to this embodiment are shown. [Figure 11] The results of a wind tunnel experiment on the garment according to this embodiment are shown. [Modes for carrying out the invention]

[0009] The embodiments of this disclosure will be described below with reference to the attached drawings.

[0010] FIG. 1 is a perspective view mainly showing the clothing 1 according to the present embodiment from the front. The clothing 1 according to the present embodiment is a top worn in a triathlon cycling competition. The clothing 1 has a body 10 having a front body 11 and a back body 12, and a pair of sleeve portions 20 provided on both sides of the body 10. The sleeve portion 20 extends from a sleeve cap 20e corresponding to the shoulder of the wearer to a cuff 20f corresponding to the wrist of the wearer. That is, the clothing 1 according to the present embodiment is a long-sleeved top. The clothing may be a short-sleeved top.

[0011] Here, the direction from the back body 12 to the front body 11 is defined as the front direction, and the direction opposite to the front direction is defined as the back direction. Also, a direction orthogonal to the front-back direction and along the height direction of the wearer is defined as the up-down direction, and a direction orthogonal to the front-back direction and the up-down direction is defined as the left-right direction.

[0012] A zipper fastener 30 extending from the lower end to the upper end of the front body 11 is provided at the center of the body width of the front body 11. By moving the slider of the zipper fastener 30 up and down, the clothing 1 can be opened and closed. The wearer puts on the clothing 1 by passing an arm through the sleeve portion 20 from the inside of the clothing 1 in the open state. In a triathlon cycling competition, the wearer rides a bicycle while wearing the clothing 1 according to the present embodiment and without wearing an additional top on the outside of the clothing 1.

[0013] The sleeve portion 20 is divided into an upper arm region 20c corresponding to the upper arm of the wearer and a forearm region 20d corresponding to the forearm of the wearer. The boundary between the upper arm region 20c and the forearm region 20d corresponds to the elbow of the wearer.

[0014] A convex portion group 40 extending in the front-back direction is provided in the upper arm region 20c. The convex portion group 40 is provided with three in the right sleeve portion 20 and three in the left sleeve portion respectively, arranged vertically. The convex portion group 40 is composed of two convex portions 41 and 42, and has a first convex portion 41 provided on the upper side and extending in the front-back direction, and a second convex portion 42 provided on the lower side and extending in the front-back direction. The first convex portion 41 and the second convex portion 42 protrude outward from the outer surface of the sleeve portion 20 by a predetermined dimension.

[0015] A flow path 50 for guiding air backward is defined between the first convex portion 41 and the second convex portion 42, and the flow path 50 extends in the front-rear direction. In other words, the flow path 50 is a region on the outer surface of the sleeve portion 20 that is sandwiched between the first convex portion 41 and the second convex portion 42. Three flow paths 50 are provided along the direction from the sleeve top 20e toward the cuff 20f (i.e., downward).

[0016] FIG. 2 shows a front view of the clothing 1 laid flat. In FIG. 2, the clothing 1 is in a posture (referred to as a side-flat posture) where the side surface 10b of the body portion 10 (the surface corresponding to the wearer's side abdomen) faces the front. In the side-flat posture, the body portion 10 is folded along the center line of the body width of the front body portion 11 (i.e., the line passing through the zipper fastener 30) and the center line of the body width of the rear body portion 12, and the sleeve portion 20 extends along the height direction of the wearer (i.e., the vertical direction) and is folded so as to contact (i.e., be placed on) the side surface 10b of the body portion 10. In the sleeve portion 20, an inner surface 20b (see FIG. 5) on the side contacting the body portion 10 and an outer surface 20a opposite to the inner surface 20b are defined. Each convex portion group 40 is provided on the outer surface 20a.

[0017] In the posture of the clothing 1 shown in FIG. 2, the side surface 10b of the body portion 10 is composed of the front body portion 11 and the rear body portion 12, the front surface 10a of the body portion 10 is mainly composed of the front body portion 11, and the rear surface 10c of the body portion 10 is mainly composed of the rear body portion 12.

[0018] An inlet 50a of the flow path 50 is defined between the front ends of the first convex portion 41 and the second convex portion 42, that is, at the front end of the flow path 50. An outlet 50b of the flow path 50 is defined between the rear ends of the first convex portion 41 and the second convex portion 42, that is, at the rear end of the flow path 50. In FIG. 2, the air flow direction d in the case of assuming forward bicycle travel is indicated by an arrow. That is, the inlet 50a is the upstream side of the air flow, and the outlet 50b is the downstream side of the air flow.

[0019] The first protrusion 41 and the second protrusion 42 are positioned offset from the leading edge 20g of the outer surface 20a towards the trailing edge 20h. In other words, the flow path 50 is positioned offset from the leading edge 20g towards the trailing edge 20h. In this embodiment, the lowest group of protrusions 40 is positioned offset towards the trailing edge 20h more than the two upper groups of protrusions 40.

[0020] The flow path centerline C1, which passes through the intermediate position between the first protrusion 41 and the second protrusion 42, is inclined downward in the direction of height in the forward direction. In other words, the extension direction of the flow path 50 is inclined downward in the direction of height in the forward direction. This inclination angle is set within the range of 10° to 25°.

[0021] The length L1 of the flow path 50 in the extension direction is sufficient to be greater than the length L2 of the outer surface 20a in the front-rear direction (the maximum distance between the front edge 20g and the rear edge 20h in the front-rear direction). The length L1 can be appropriately selected depending on the size of the garment. Specifically, the length L1 is set in the range of 70 mm to 90 mm. For example, if the length L2 is in the range of 113 mm to 143 mm, in other words, if the size of garment 1 is M size or smaller, the length L1 is 70 mm. If the length L2 is in the range of 158 mm to 204 mm, in other words, if the size of garment 1 is L size or larger, the length L1 is 90 mm. It is preferable that the ratio of length L1 to length L2 be 0.4 to 0.65.

[0022] Figure 3 shows the first protrusion 41 and the second protrusion 42, and the flow path 50 between the first protrusion 41 and the second protrusion 42. As shown in Figure 3, the width W1 of the inlet 50a (the dimension in the direction perpendicular to the extension direction of the flow path 50) is greater than the width W2 of the outlet 50b (the dimension in the direction perpendicular to the extension direction of the flow path 50). That is, the flow path 50 has a shape such that the width of the flow path decreases as it moves towards the rear. The width W1 is set in the range of 32 mm to 35 mm, and the width W2 is set in the range of 5 mm to 10 mm.

[0023] The first convex portion 41 and the second convex portion 42 that define the flow path 50 have a curved shape that is symmetrical with respect to the flow path centerline C1. The first convex portion 41 and the second convex portion 42 each have a first curved portion 40a on the inlet 50a side and a second curved portion 40b on the outlet 50b side. In this embodiment, the angle between the tangent to the first curved portion 40a and the flow path centerline C1 is approximately 10°.

[0024] In Figure 3, the first curvature center O1, which is the curvature center of the first curved portion 40a of the first protrusion 41, and the second curvature center O2, which is the curvature center of the second curved portion 40b of the first protrusion 41, are shown.

[0025] As shown in Figure 3, the first center of curvature O1 is located on the flow path 50 side relative to the first protrusion 41. The second center of curvature O2 is located on the opposite side of the flow path 50 relative to the first protrusion 41. That is, the first curved section 40a is formed so that the flow path 50 bulges outward, and the second curved section 40b is formed so that the flow path 50 narrows inward. In this specification, the flow path shape is referred to as the wine bottle shape because its shape is similar to the outer shape of a wine bottle. Here, "on the flow path 50 side relative to the first protrusion 41" means that the region beyond the second protrusion 42 on the opposite side of the first protrusion 41 (the region below the second protrusion 42 shown in Figure 3) is also included. That is, the first center of curvature O1 may be located in the region below the second protrusion 42.

[0026] Figure 4 shows a cross-section of the first protrusion 41 along the cross-section IV-IV in Figure 3. The second protrusion 42 has a similar structure to the first protrusion 41. The first protrusion 41 is formed by placing an elastic rod-shaped core material 43 on the inner surface side of the fabric of the sleeve portion 20 and covering the core material 43 from the inner surface side with an elastic fabric adhesive sheet 44. That is, the shape and size of the first protrusion 41 are mainly determined according to the shape and size of the core material 43. The protrusion height H of the first protrusion 41 is set in the range of 2 mm to 5 mm. The width W3 of the first protrusion 41 is set in the range of 5 mm to 10 mm. From the viewpoint of reducing air resistance generated by the sleeve portion 20, when the width W3 is large, it is preferable that the protrusion height H be small. The method of forming the protrusions 41 and 42 is not limited to this. For example, the protrusion may be formed by attaching a core material such as urethane or foamed silicone to the outer surface side of the fabric of the sleeve portion 20 with an adhesive. The core material attached to the outer surface may be further covered with another fabric.

[0027] Figure 5 shows a rear view of garment 1. In Figure 5, two pockets 13 are provided on the left and right sides of the back panel 12 at a position corresponding to the wearer's waist. Small plastic bottles or similar items for hydration during a triathlon competition can be stored in the pockets 13.

[0028] In particular, during cycling in a triathlon, the rider adopts a forward-leaning posture such that their back is roughly parallel to the direction of airflow (see, for example, Figure 6). As a result, if the air flowing along the surface of the back of the garment enters a pocket located on the back, the rider may experience significant air resistance.

[0029] The opening 13a of the pocket 13 in this embodiment is located outward relative to the center of the body width and slopes downward toward the outside. Therefore, compared to cases where the pocket opening is located at the center of the body width and / or where the pocket opening is horizontal, less air enters the pocket 13 in this embodiment when riding a bicycle. In other words, the garment 1 of this embodiment can reduce air resistance caused by air entering the pocket opening.

[0030] Next, we will describe the results of fluid analysis and wind tunnel experiments conducted to verify the relationship between the flow path 50 provided in the garment 1 of this embodiment and air resistance.

[0031] [Fluid analysis] First, the analysis method will be explained. Figure 6 shows a mannequin 100 wearing clothing 1 and a bicycle 200 on which the mannequin 100 is riding. The mannequin 100 in Figure 6 is in a posture specifically for cycling in a triathlon. In Figure 6, the mannequin 100 is in a forward-leaning posture such that its upper arm 100a is aligned vertically and its back is approximately parallel to the direction d of the airflow. In this analysis, an analysis model was created that simulates the mannequin 100 and bicycle 200 in the posture shown in Figure 6. In this analysis model, the upper arm 100a has multiple protrusions that extend parallel to each other in the vertical direction. Each protrusion is inclined downward toward the front at a predetermined angle. That is, as in clothing 1 of this embodiment, a flow path inclined at a predetermined angle is defined between each protrusion. Therefore, this angle of inclination corresponds to the angle of inclination of the flow path centerline C1 shown in Figure 2.

[0032] In this analysis, a fluid with predetermined properties, simulating air, was given a predetermined backward velocity. The force (drag force) acting on mannequin 100 and bicycle 200 due to the fluid flow was calculated. In this analysis, the inclination angle of the convex part was varied in the range of 0° to 90°, and the fluid velocity was varied in the range of 15 m / s to 25 m / s. The drag force values ​​calculated for each inclination angle and fluid velocity were compared. This analysis was performed using AcuSolve from Altair Engineering Co., Ltd., but other general-purpose CFD software may be used.

[0033] [Analysis results] Figure 7 shows the analysis results. The horizontal axis represents the inclination angle of the convex portion. The vertical axis represents the relative resistance, obtained by dividing the drag force value for each inclination angle by the drag force value for an inclination angle of 0°. The solid line represents the relative resistance at a fluid velocity of 15 m / s, the dashed line represents the relative resistance at 20 m / s, and the dotted line represents the relative resistance at 25 m / s.

[0034] At all speed ranges, the drag force is small at inclines of 10° to 20°. A small drag force means that air resistance is relatively small. The drag force is also small at an incline of 90°.

[0035] Further analysis of these results confirmed that vortices were generated in the convex portions and the flow paths between them. In particular, when the inclination angle was 10° to 20°, that is, when the convex portions were slightly inclined with respect to the direction of fluid flow, it was confirmed that the fluid flow along the upper arm portion 100a stabilized and uniform vortices were generated. As a result, the fluid flow along the upper arm portion 100a was consolidated, reducing the negative pressure region downstream of the fluid flow and thus lowering the drag force.

[0036] Even at a tilt angle of 90°, the relative resistance is low, but if the angle shifts slightly (for example, to a tilt angle of 80°), the relative resistance increases. Therefore, it is difficult to maintain a consistently low relative resistance in the angle range around 90°. From these analysis results, the inventors found that a convex portion with a tilt angle of 10° to 20° is preferable for reducing air resistance, and taking this finding into consideration, they conducted the following wind tunnel experiments.

[0037] [Wind tunnel experiment] First, let's explain the experimental method. In the wind tunnel experiment, air at a predetermined wind speed was blown from the front onto mannequin 100 and bicycle 200, as shown in Figure 6, and the drag coefficient (Cd value) was calculated by measuring the drag force applied to mannequin 100. A large Cd value means high air resistance, and a small Cd value means low air resistance. In this experiment, the wind speed was varied between 20 km / h and 60 km / h. The clothing size worn by mannequin 100 in this experiment is size L.

[0038] [Experimental Result 1] Wind tunnel experiments were conducted by changing the arrangement of the flow path 50 in the front-to-back direction. Table 1 shows the specifications of each example and comparative example.

[0039] [Table 1]

[0040] In Examples 1 and 2, two wine bottle-shaped flow channels 50 are provided side by side on the sleeve peak 20e side (i.e., the upper side). The flow channels 50 are provided such that their flow channel centerline C1 is inclined downward by 20° in the forward direction. The shape of the flow channels 50 is the same in Examples 1 and 2. In Example 1, the flow channels 50 are located biased toward the rear edge 20h side of the sleeve portion 20; in other words, the convex portions 41 and 42 are located biased toward the rear edge 20h side of the sleeve portion 20. In Example 2, the flow channels 50 are located biased toward the front edge 20g side of the sleeve portion 20; in other words, the convex portions 41 and 42 are located biased toward the front edge 20g side of the sleeve portion 20.

[0041] The clothing in Comparative Example 1 does not have the flow path 50, i.e., the first protrusion 41 and the second protrusion 42. In Comparative Example 2, the mannequin is not wearing any clothing, i.e., it is naked.

[0042] Figure 8 shows the experimental results. In Figure 8, the horizontal axis represents the air velocity, and the vertical axis represents the Cd value. The solid line shows the Cd value for Example 1, the dotted line shows the Cd value for Example 2, the dashed line shows the Cd value for Comparative Example 1, and the thin solid line shows the Cd value for Comparative Example 2.

[0043] In most wind speed ranges, the Cd values ​​of Examples 1 and 2 are smaller than those of Comparative Example 1, which does not have a flow path 50. Furthermore, the Cd value of Example 1 is smaller than that of Comparative Example 2, which is generally bare and has low air resistance. The cycling speed range in triathlon is approximately 20 km / h to 40 km / h. From these results, it was confirmed that in this speed range, the clothing of Examples 1 and 2 advantageously reduces air resistance, and that having the flow path 50 positioned at the rear further advantageously reduces air resistance.

[0044] When the vortex-generating protrusions 41 and 42 and the flow path 50 are positioned at the rear, it is thought that the air along the surface of the sleeve portion 20 is less likely to separate downstream compared to when the protrusions 41 and 42 and the flow path 50 are positioned at the front. Therefore, it is presumed that the Cd value in Example 1 was small.

[0045] [Experimental Result 2] Wind tunnel experiments were conducted by varying the number and vertical arrangement of the flow channels 50. Table 2 shows the specifications of each example and comparative example.

[0046] [Table 2]

[0047] The specifications of Example 3 are such that three flow channels 50 are provided evenly from the top to the part corresponding to the wearer's elbow (i.e., the bottom), which is the same specification as clothing 1 shown in Figures 1 and 2. In Example 4, two flow channels 50 are provided side by side on the bottom.

[0048] Figure 9 shows the experimental results. The solid line shows the Cd value for Example 1, the dotted line shows the Cd value for Example 3, the dashed line shows the Cd value for Example 4, and the dashed line shows the Cd value for Comparative Example 1. Note that the dates on which Experiment 1 was conducted differ from those on which Experiments 2-4 were conducted, so the absolute values ​​of the Cd values ​​for Example 1 and Comparative Example 1 in Experiment 1 differ from the absolute values ​​of the Cd values ​​for Example 1 and Comparative Example 1 in Experiments 2-4.

[0049] The Cd values ​​of Examples 1, 3, and 4 are smaller than those of Comparative Example 1. The Cd value of Example 3, which has three flow channels 50, is smaller than that of Examples 1 and 4, which have two flow channels 50. Furthermore, the Cd values ​​of Example 1 and Example 4 are almost the same, although there are slight differences in the speed range. From these results, it was confirmed that a larger number of flow channels 50 can advantageously reduce air resistance. In addition, it was confirmed that the air resistance does not change significantly depending on the vertical arrangement of the flow channels 50 in the speed range that was observed.

[0050] [Experimental Result 3] Wind tunnel experiments were conducted by changing the shape of the flow path 50. Table 3 shows the specifications of each example and comparative example.

[0051] [Table 3]

[0052] In the specifications of Example 5, the first protrusion 41 and the second protrusion 42 defining the flow path 50 extend linearly and parallel to each other. In Example 6, the shape of the flow path 50 is a tapered shape in which the first protrusion 41 and the second protrusion 42 extend linearly such that the width W1 of the inlet 50a of the flow path 50 is greater than the width W2 of the outlet 50b. In other words, the first protrusion 41 and the second protrusion 42 in Examples 5 and 6 do not have curved sections like a wine bottle shape.

[0053] Figure 10 shows the experimental results. The solid line shows the Cd value for Example 1, the dotted line shows the Cd value for Example 5, the dashed line shows the Cd value for Example 6, and the dashed line shows the Cd value for Comparative Example 1.

[0054] The Cd values ​​of Examples 1, 5, and 6 are smaller than those of Comparative Example 1. In particular, in the speed range of 30 km / h to 50 km / h, the Cd value of Example 1, which has a wine bottle shape, is smaller than that of Examples 5 and 6, which do not have curved sections. Also, in the speed range of 20 km / h to 30 km / h, the Cd value of Example 6, which has a tapered shape, is slightly smaller than that of Example 5, which has a parallel shape, and in the speed range of 40 km / h to 60 km / h, the Cd value of Example 5 is slightly smaller than that of Example 6. From these results, it was confirmed that the wine bottle-shaped flow path 50 can advantageously reduce air resistance. Furthermore, it was confirmed that a tapered flow path can advantageously reduce air resistance in the low speed range, and a parallel flow path can advantageously reduce air resistance in the high speed range.

[0055] Furthermore, in the fluid analysis described above, it has been confirmed that vortices are generated in the flow path when the flow path width is large, and in the convex portion defining the flow path when the flow path width is small. Moreover, it is thought that the formation of vortices along the length of the flow path in this way makes vortex separation less likely to occur, thereby reducing air resistance. In other words, in a wine bottle shape where the width of the flow path inlet is large and the width of the flow path outlet is small, it is thought that vortex separation is less likely to occur, and air resistance is reduced.

[0056] [Experimental Result 4] Wind tunnel experiments were conducted by changing the configuration of the protrusions defining the flow path 50. Table 4 shows the specifications of each example and comparative example.

[0057] [Table 4]

[0058] In Example 7, the height H of the first protrusion 41 and the second protrusion 42 is 2 mm. In Example 8, the lengths of the first protrusion 41 and the second protrusion 42 are changed so that the flow path length L1 is 110 mm.

[0059] Figure 11 shows the experimental results. The solid line shows the Cd value for Example 1, the dotted line shows the Cd value for Example 7, the dashed line shows the Cd value for Example 8, and the dashed line shows the Cd value for Comparative Example 1.

[0060] The Cd values ​​of Examples 1, 7, and 8 are smaller than those of Comparative Example 1. The Cd value of Example 1, with a protrusion height H of 5 mm, is smaller than that of Example 7, with a protrusion height H of 2 mm. Furthermore, the Cd value of Example 6, with a flow path length L1 longer than that of Example 1, is equivalent to that of Example 1. From these results, it was confirmed that a protrusion height of 5 mm is advantageous in reducing air resistance. It was also confirmed that even with a flow path length L1 of 110 mm, air resistance can be advantageously reduced in the same way as in Example 1.

[0061] By making the length L1 of the flow path at least 90 mm, that is, by making the length L1 sufficient compared to the length L2 of the outer surface 20a of the sleeve portion 20, it is believed that the vortices generated in the flow path separate as far downstream as possible from the fluid flow, thereby reducing air resistance.

[0062] Based on the results of the fluid analysis and wind tunnel experiments described above, the inventors obtained the following findings. a. The airflow channel defined by the protrusions on the sleeves provides a significant reduction in air resistance, particularly when cycling, compared to clothing without such channels. b. The inclination angle of the flow path is preferably between 10° and 20°. c. The flow path is preferably located at the rear. d. A larger number of flow channels is preferable. e. The shape of the flow path should preferably be that of a wine bottle. f. When the height of the protrusion is in the range of at least 2 mm to 5 mm, air resistance can be advantageously reduced, and it is more preferable that the height of the protrusion be 5 mm. When the length of the flow path in a gL-sized garment is in the range of at least 90 mm to 110 mm, air resistance can be advantageously reduced.

[0063] Furthermore, during a cycling race, the rider's upper arm moves less than other parts of the body (e.g., the legs). Therefore, the shape of the flow path 50 defined by the protrusions 41 and 42 provided in the upper arm region 20c is less likely to deform during a cycling race. In other words, the garment 1 of this embodiment can suppress fluctuations in the function of reducing air resistance by the flow path 50 throughout a cycling race and stably reduce air resistance.

[0064] According to the garment 1 of this embodiment, the following effects are achieved.

[0065] (1) Clothing 1 is, A bodice 10 having a front bodice 11 and a back bodice 12, Sleeve section 20 and In a side-lay position where the side surface 10b of the body 10 faces forward, the sleeve portion 20 has at least two protrusions 41, 42 extending in the front-to-back direction, provided on the upper arm region 20c of the outer surface 20a, which is opposite to the inner surface 20b that is in contact with the body 10, and which corresponds to the upper arm of the wearer. It is defined between the two protrusions 41 and 42 and extends in the front-rear direction, and has a flow path 50 that guides air in the rear direction. It is equipped with.

[0066] As a result, the air resistance generated on the outer surface 20a of the sleeve portion 20, especially when cycling, can be reduced by the airflow channel 50. Furthermore, since the airflow channel 50 is defined in the upper arm region 20c, the shape of the airflow channel 50 is less likely to deform, and air resistance can be stably reduced throughout the cycling competition. Therefore, by wearing the garment 1 of this disclosure, the cycling speed can be improved, especially in cycling competitions.

[0067] (2) The flow path 50 has an inlet 50a at the front end and an outlet 50b at the rear end, In a horizontally positioned configuration, the width W1 of the inlet 50a is greater than the width W2 of the outlet 50b in a direction perpendicular to the extension direction of the flow path 50.

[0068] As a result, air resistance can be further reduced.

[0069] (3) The protrusions 41 and 42 have a first curved section 40a on the inlet 50a side and a second curved section 40b on the outlet 50b side, the center of curvature O1 of the first curved section 40a is located on the flow path 50 side with respect to the protrusions 41 and 42, and the center of curvature O2 of the second curved section 40b is located on the opposite side of the flow path 50 with respect to the protrusions 41 and 42.

[0070] Because the protrusions 41 and 42 have such curved sections 40a and 40b, the flow path 50 defined by the protrusions 41 and 42 takes on a wine bottle shape. As a result, air resistance can be further reduced by the wine bottle-shaped flow path 50.

[0071] (4) In the side-lying position, the flow path centerline C1 passing through the intermediate position between the two protrusions 41 and 42 is inclined in the forward direction and downward in the direction of height by an angle of 10° to 20°.

[0072] As a result, the fluid flow along the upper arm 100a becomes stable, and air resistance can be further reduced.

[0073] (5) The protruding height H of the protrusions 41 and 42 is 2 mm or more and 5 mm or less.

[0074] By setting the protrusion height H to between 2 mm and 5 mm, air resistance can be advantageously reduced.

[0075] (6) The ratio of the length L1 of the flow channel 50 in the extension direction to the length L2 of the outer surface 20a in the front-rear direction is 0.4 or more and 0.65 or less.

[0076] By setting this ratio to between 0.4 and 0.65, air resistance can be advantageously reduced.

[0077] (7) The two protrusions 41 and 42 are positioned so as to be off-center from the leading edge 20g of the outer surface 20a to the trailing edge 20h.

[0078] As a result, air resistance can be reduced even further than when no clothing is worn.

[0079] (8) Multiple flow channels 50 are provided along the direction from the sleeve peak 20e to the sleeve opening 20f of the sleeve portion 20.

[0080] As a result, air resistance can be reduced even further.

[0081] Furthermore, the clothing relating to this disclosure is not limited to the configuration of the above embodiment, and various modifications are possible.

[0082] The garment 1 in this embodiment is a top for the cycling portion of a triathlon, but the garment may also be a top for track cycling.

[0083] The first and second protrusions do not necessarily have to be symmetrical with respect to the flow channel centerline C1. The shape of the first protrusion may differ from the shape of the second protrusion. Furthermore, the first and second protrusions may have the same shape, and the distance between the first protrusion and the flow channel centerline C1 may differ from the distance between the second protrusion and the flow channel centerline C1.

[0084] The first curved section may be composed of multiple curved sections, each having a different radius of curvature. Similarly, the second curved section may be composed of multiple curved sections, each having a different radius of curvature.

[0085] The garment may be a triathlon suit consisting of a top and bottom garments that extend to above the knees. Alternatively, the garment may be just bottom garments. If the garment is bottom garments, the protrusions of this disclosure are appropriately positioned to advantageously reduce air resistance when the cyclist is not pedaling, such as when cycling downhill in a cycling competition.

[0086] [Note] The clothing relating to this disclosure provides the following aspects:

[0087] [Aspect 1] A bodice having a front panel and a back panel, The sleeves and, In a side-lay position where the side of the garment faces forward, the outer surface of the sleeve, opposite to the inner surface which is in contact with the garment, is provided in the upper arm region corresponding to the wearer's upper arm, and has at least two protrusions extending in the front-to-back direction, A channel is defined between the two aforementioned protrusions and extends in the front-rear direction, which guides air in the rearward direction. Clothing that is equipped with [something].

[0088] [Aspect 2] The aforementioned flow path has an inlet at the front end and an outlet at the rear end. In the direction perpendicular to the extension direction of the flow path in the aforementioned side-lying position, the width of the inlet is greater than the width of the outlet. Clothing as described in Embodiment 1.

[0089] [Aspect 3] The convex portion has a first curved portion on the inlet side and a second curved portion on the outlet side, the center of curvature of the first curved portion is located on the flow path side with respect to the convex portion, and the center of curvature of the second curved portion is located on the opposite side of the flow path with respect to the convex portion. Clothing as described in Embodiment 2.

[0090] [Aspect 4] In the aforementioned side-lying position, the center line of the flow path passing through the intermediate position between the two protrusions is inclined in the forward direction and downward in the direction of height by an angle of 10° to 20°. Clothing as described in any one of the descriptions 1 to 3.

[0091] [Aspect 5] The protruding height of the aforementioned protrusion is 2 mm or more and 5 mm or less. Clothing as described in any one of the descriptions 1 to 4.

[0092] [Aspect 6] The ratio of the length of the flow channel in the extension direction to the length of the outer surface in the front-rear direction is 0.4 or more and 0.65 or less. Clothing as described in any one of the descriptions 1 to 5.

[0093] [Aspect 7] The two protrusions are positioned so as to be offset from the leading edge of the outer surface toward the trailing edge. Clothing as described in any one of the descriptions 1 to 6.

[0094] [Aspect 8] Multiple channels are provided along the direction from the sleeve cap to the cuff of the sleeve portion. Clothing as described in any one of the embodiments 1 to 7. [Explanation of Symbols]

[0095] 1: Clothing 10: Body 10b: Side 11: Front 12: Back 20: Sleeve part 20a: Outer surface 20c: Upper arm area 20e: Sodeyama 20f: Cuffs 20g: Front edge 20h: trailing edge 40: Convex group 40a: 1st curved part 40b: 2nd curved part 41: First protrusion 42: Second protrusion 50: Flow channel 50a: Entrance 50b:Exit W1: Entrance width W2: Outlet width L1: Flow channel length L2: Sleeve length O1: 1st center of curvature O2: 2nd center of curvature H: Projection height C1: Centerline of the flow path

Claims

1. A bodice having a front panel and a back panel, The sleeves and, In a side-lay position with the side of the garment facing forward, the outer surface of the sleeve, opposite to the inner surface which is in contact with the garment, is provided in the upper arm region corresponding to the wearer's upper arm, and has at least two protrusions extending in the front-to-back direction, A channel is defined between the two aforementioned protrusions and extends in the front-rear direction, which guides air in the rearward direction. Clothing that is equipped with [something].

2. The aforementioned flow path has an inlet at the front end and an outlet at the rear end. In the aforementioned side-lying position, in a direction perpendicular to the extension direction of the flow path, the width of the inlet is greater than the width of the outlet. Clothing according to claim 1.

3. The convex portion has a first curved portion on the inlet side and a second curved portion on the outlet side, the center of curvature of the first curved portion is located on the flow path side with respect to the convex portion, and the center of curvature of the second curved portion is located on the opposite side of the flow path with respect to the convex portion. Clothing according to claim 2.

4. In the aforementioned side-lying position, the center line of the flow path passing through the intermediate position between the two protrusions is inclined in the forward direction and downward in the direction of height by an angle of 10° to 20°. Clothing according to any one of claims 1 to 3.

5. The protruding height of the aforementioned protrusion is 2 mm or more and 5 mm or less. Clothing according to claim 1.

6. The ratio of the length of the flow channel in the extending direction to the length of the outer surface in the front-rear direction is 0.4 or more and 0.65 or less. Clothing according to claim 1.

7. The two protrusions are positioned so as to be offset from the leading edge of the outer surface toward the trailing edge. Clothing according to claim 1.

8. Multiple channels are provided along the direction from the sleeve cap to the cuff of the sleeve portion. Clothing according to claim 1.

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