JP2001032104A - Swimsuit for swimming race - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a swimsuit for swimming races which reduces flow resistance, is helpful for retaining the posture of a swimming racer and contributes to improvement in the record. SOLUTION: This swimsuit for swimming races covers continuously a body part ranging from the trunk to the thigh or calf with cloth when a woman wears the swimsuit and covers a body part ranging from the waist to the thigh or calf or covers continuously a body part ranging from the trunk to the thigh or calf with cloth when a man wears the swimsuit. Consequently, support force in the direction of wear's body length under the action of a stretchable cloth used in the swimsuit for swimming races enables a swimming racer to easily make his/her body positions ranging from the head to the waist, knees, tips of feet retain his/her parallel posture to the surface of the water in swimming, which reduces his/her projected area viewed from the front in the running direction and causes the reduction of profile drag.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a swimming race swimsuit which reduces running water resistance, helps a swimmer maintain his / her posture, and contributes to improvement of recording.

[0002]

2. Description of the Related Art Conventionally, various techniques have been devised to reduce the running resistance of swimming race swimsuits, and the methods are classified into several types.

[0003] One method is to reduce the frictional resistance of the surface of the stretchable fabric used for swimwear by knitting densely using as thin a thread or fiber as possible, or applying a heat press such as a calendar. Japanese Patent Application Laid-Open No. 9-49107 discloses a method of reducing the frictional resistance by smoothing the fabric surface and a method of applying a water-repellent treatment to the fabric surface in a stripe shape.

Further, there is a method in which minute protrusions are provided on the surface of a swimsuit to suppress turbulence and eddies to reduce resistance. A method of rectifying the flow by providing a group of linear projections parallel to the flow of water on a non-water-permeable sheet attached near the opening of the swimsuit is disclosed in Japanese Utility Model Publication No.
Japanese Patent Application Laid-Open No. Hei 9-111514 discloses a method of reducing the resistance by providing a group of minute projections at the protruding portion to suppress generation of a wake vortex.
Issue. In addition, measures have been taken to prevent water from entering through the opening of the swimsuit and to quickly drain water entering the interior of the swimsuit.

[0005]

Conventionally, in considering the resistance of a swimmer, the main focus has been on reducing the frictional resistance of a swimsuit worn by the swimmer. The whole body is subjected to frictional resistance, and not only the frictional resistance received by the part covered by the swimsuit but also the frictional resistance received by the exposed part of the skin cannot be ignored.

[0006] The largest weight occupies the shape resistance caused by the swimmer's attitude in water. Since the shape resistance received by a swimmer is determined by the projected area of the swimmer viewed from the front in the traveling direction, it is effective to take a posture as parallel as possible to the water surface to reduce the shape resistance. is there. That is, it is desirable to keep the positions of the hips, knees, and toes from sinking downward with respect to the position of the swimmer's head, and to keep the entire body as parallel to the water surface as possible. However, in conventional swimwear,
Nothing was considered for maintaining such an underwater posture.

[0007] Another effect of wearing a swimsuit is a body shape correction effect. That is, conventionally, only the particularly soft and easily deformable portions such as the bust and hips of a female swimmer are pressed down as a whole, and the projections are flattened and the vibrations of these portions due to the water flow are prevented. However, underwater, the muscles of the arms and legs and the muscles of the trunk, such as the chest, abdomen, and back, in boys receive considerable resistance due to water flow resistance,
Underwater video shooting revealed the deformation. It was found that such vibrations and deformations not only lead to increased resistance, but also to muscle power loss and eventually to muscle fatigue. Therefore, there has been a demand for a swimming race swimsuit that suppresses the vibration and deformation of not only the bust and hips but also the muscles of the arms and legs, and also the muscles of the trunk such as the chest, abdomen and back in men.

[0008]

SUMMARY OF THE INVENTION The swimsuit according to the present invention is such that, for girls, the trunk to thighs and lower thighs are continuously covered with cloth, and for boys, the waist to thighs. By covering the part and the lower leg, or by continuously covering the trunk from the trunk to the thigh and the lower leg with the cloth, by the support force in the body length direction derived from the action of the elastic cloth used in the swimsuit During swimming, athletes can easily keep their hips, knees, and toes parallel to the water surface with respect to the head position, reducing the projected area as viewed from the front in the traveling direction. This leads to a reduction in shape resistance.

In addition, the swimsuit according to the present invention has a structure in which the trunk, the thighs, the lower thighs, or the arms are continuously covered with the cloth, so that the muscles of the swimmer that have been exposed can be used. Vibration and deformation due to water flow can be suppressed, and unevenness of muscles can be reduced. As a result, the body shape is corrected and the resistance of the swimmer to the water flow can be reduced, and at the same time, power loss and muscle fatigue due to excessive muscle vibration and deformation can be prevented, leading to improved recording.

Further, the swimming suit according to the present invention is characterized in that a water-repellent portion and a non-water-repellent portion are formed in a continuous stripe shape in parallel with the body length direction on the surface of the stretchable material. A continuous water-repellent part that is continuously water-repellent, an intermittent water-repellent part that is formed intermittently with a water-repellent part that has been subjected to water-repellent processing, and a non-water-repellent part that has not been subjected to water-repellent processing. However, by using the fabric formed in a continuous stripe shape parallel to the body length direction, the running water friction resistance on the fabric surface is reduced, and at the same time, the water-repellent part does not contain water, so compared to conventional swimwear Even if the area of the fabric used per garment increases, the swimsuit does not absorb water and become heavy.

[0011] Further, in the swimsuit according to the present invention, the conventional swimsuit is constituted by a piece of cloth which is continuous from the waist on the back side to the thighs along the body length direction and has no switching at the hip. The step generated by the edge pressing the hip is eliminated, and the flow of water in the hip becomes smooth, which leads to a reduction in resistance.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION A swimsuit according to the present invention is made of stretchable fabric, and is formed continuously from the trunk excluding the arm to the knee above the thigh or the ankle to the lower leg. That was continuously formed from the arm and trunk to the ankle of the lower leg, or that was continuously formed from the waist to above the knee of the thigh or to the ankle of the lower leg It is characterized by. As described above, by reducing the exposed portion of the skin, it is possible to suppress the vibration and deformation of the muscles of the swimmer, which have been conventionally exposed, due to the water flow, and to reduce the unevenness of the muscles.

In the swimsuit according to the present invention, which covers the trunk, it is preferable that the back of the swimsuit is covered with the cloth except for the scapula, but an opening is provided in the center of the back depending on the event. It is also possible.

The stretchable fabric according to the present invention has an elongation in the body length direction of 0.35 to 0.60 kg (JIS L10).
96, 30% elongation, per 5 cm sample width). By using a cloth having such an extension force, vibration and deformation of the muscles of the swimmer due to the water current can be effectively suppressed, and the unevenness of the muscles can be extremely reduced.

Further, on the back side of the swimsuit, the stretching force in the body length direction is 0.35 to 0.60 kg (JIS L1096, 3
Use a stretchable fabric that is 0% elongation (per 5 cm of sample width), and use a fabric whose front-side fabric has a stretching tension in the body length direction smaller than that of the back-side fabric. You can also. With this configuration, the fabric used on the back side has a high elongation force without hindering the ease of movement, and supports the downward movement of the lower back, the thigh, or the lower leg. Therefore, it becomes easy to keep the positions of the hips, knees, and feet parallel to the water surface.

A water-repellent portion and a non-water-repellent portion are formed in a continuous stripe shape in parallel with the body length direction on the surface of the stretchable fabric, or a continuous water-repellent surface is formed. A water-repellent part, an intermittent water-repellent part formed intermittently with a water-repellent part that has been subjected to water-repellent processing and a non-water-repellent part that has not been subjected to water-repellent processing, are continuous stripes parallel to the body length direction It is preferable to use the dough formed in the above.

The water repellent used in the swimsuit according to the present invention can be appropriately selected from various water repellents conventionally used, such as a silicone water repellent and a fluorine water repellent. . Further, the treatment agent used for the water-repellent portion of the swimsuit according to the present invention is not limited to the name of the water-repellent agent, but may be any as long as it substantially reduces the surface frictional resistance of the swimsuit in water. It may be a suitable treating agent, such as a printing agent or a sealing agent.

As a method of applying the water repellent to the surface of the fabric in a stripe shape by dividing the water repellent portion into a continuous water repellent portion and an intermittent water repellent portion, a generally industrialized printing formulation is suitable. Is appropriately selected from a roller printing machine, an automatic screen printing machine, a hand screen printing machine and the like.

The amount of the water repellent applied to the cloth is determined by the basis weight of the base cloth,
Although it varies depending on the thickness, the water repellent area, the type of the water repellent, and the like, 5 to 20 g / m ² is preferable. It is important that the water-repellent portion is provided on the surface of the swimsuit. Therefore, another treatment agent is provided on the cloth surface in a continuous and intermittent portion in a stripe shape, and the water-repellent agent is further provided on the stripe. May be adopted.

After the water repellent is attached to the surface of the fabric, it is preferable to perform a post-treatment such as a heat treatment for the purpose of accelerating a crosslinking reaction for fixing the water repellent to the fabric according to a usual water repellent process. The heat treatment for the purpose of accelerating the crosslinking reaction can be performed using a usual pin tenter or the like.

By using the cloth which has been subjected to the water repellent treatment as described above, it is possible to greatly reduce the frictional resistance against running water on the surface of the swimsuit, and to suppress the amount of water impregnated in the cloth forming the swimsuit. Therefore, the total weight of the swimsuit during the competition can be reduced.

In the swimsuit according to the present invention, it is preferable that the swimsuit is made of a piece of cloth continuous from the waist on the back side to the thigh in the body length direction and the hip is not switched. As described above, since the back portion is formed from the waist portion to the thigh portion along the body length direction and there is no step in the hip portion, the water flow flowing backward from the waist portion through the hip portion is disturbed because the hip portion does not have a step. Nothing.

The base material according to the present invention is partially or entirely cross-knitted or woven with synthetic fibers such as polyester, polyamide and polypropylene and elastic fibers having elasticity such as polyurethane and polyetherester. It is preferable to use a cloth that is freely stretchable in the vertical and horizontal directions and adheres to the body of the swimmer. In particular, in swimsuits, ease of movement is often regarded as important, and as a material form, a knitted fabric obtained by knitting a synthetic fiber multifilament yarn and a polyurethane elastic yarn is more preferable.

As the form of the knitted fabric, any of a single circular knitted fabric, a double circular knitted fabric as a circular knitted fabric, a tricot fabric and a Russell fabric as a warp knitted fabric can be used. Tricot fabric is more preferable from the viewpoint of the influence of the stretchability and the fabric thinness. This is dyed and finished by a normal dyeing method to obtain a fabric for water repellent processing which is the next processing.

The base material is a cross-knitted or woven fabric of synthetic fibers such as polyester, nylon and polypropylene and elastic fibers having elasticity such as polyurethane and polyether-ester, and the surface is hot-pressed. The surface can be smoothed by processing, and a plurality of fine grooves can be formed on the surface along the body length direction by embossing or the like.

[0026]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A specific example of a swimsuit according to the present invention will be shown, and the performance of the swimsuit will be compared with that of a conventional swimsuit by the following experiment.

(Experiment 1) In this experiment, in order to compare the surface friction resistance of the swimsuits according to the respective examples, the swimmers were allowed to wear each swimsuit and fixed on a circulating water tank as shown in FIG. A rope having a length of about 550 mm is connected to the load cell thus obtained, and a constant-speed water flow having a flow velocity of 1.8 m / s is passed through the circulating water tank with the tip of the rope being held by the player to measure flowing water resistance. In this state, the muscle vibration and deformation of the player were visually observed.

(Experiment 2) In this experiment, in order to observe a change in the posture of a player who is actually swimming wearing the swimming suit according to each embodiment, a constant velocity water stream having a flow velocity of 1.8 m / s was applied. In the circulating water tank, a distance of about 100 m was swimmed by the crawl swimming method, and the posture of the player with respect to the water surface at that time was visually observed.

The details of Examples 1 to 10 and Comparative Examples 1 and 2 used in these experiments are as follows. (Example 1) As a stretchable fabric used in the swimsuit according to the present embodiment, a half tricot in which 40D polyester filaments and 40D polyurethane elastic fibers were mixed and knitted at a ratio of 80:20 was used. Using this fabric, a women's swimming suit was formed continuously from the trunk except the arms to the knees of the thighs and provided with an opening in the center of the back as shown in FIG.

(Embodiment 2) The stretchable fabric used in the swimsuit according to the present embodiment is the same as that used in Embodiment 1, and as shown in FIG. A women's swimsuit and a men's swimsuit continuously formed up to the upper part of the knee were produced.

(Embodiment 3) As the stretchable fabric used in the swimsuit according to the present embodiment, the same fabric as that of the embodiment 1 is used, and as shown in FIG. A women's swimsuit and a men's swimsuit, which were continuously formed up to the ankles, were produced.

(Embodiment 4) As the stretchable fabric used in the swimsuit according to the present embodiment, the same fabric as that of Embodiment 1 is used, and as shown in FIG. A swimsuit for women and a swimsuit for boys were continuously formed up to the ankle.

(Embodiment 5) The stretchable fabric used in the swimsuit according to the present embodiment is the same fabric as that used in the embodiment 1, and as shown in FIG. A swimsuit for men was continuously formed.

(Embodiment 6) The stretchable fabric used for the swimsuit according to the present embodiment is the same fabric as that of the embodiment 1, and from the waist to the ankle of the lower leg as shown in FIG. Were made to form a men's swimming suit.

(Embodiment 7) The stretchable fabric used in the swimsuit according to the present embodiment is a fabric used on the back side of the swimsuit, comprising 40D polyester filament and 50D polyurethane elastic yarn of 80:20. Half tricot dough mixed and knitted at a ratio was prepared and used as dough 2. The dough 2 was measured for elongation by the JIS L1096 constant-speed elongation method (sample width 5 cm).
At 0% elongation, the fabric exhibited an elongation of 0.50 kg in the machine direction. Further, the low-stretch fabric 1 used on the front side of the swimsuit according to the present embodiment is the same fabric as the fabric used in the first embodiment. When stretched, the fabric exhibited a stretching force of 0.30 kg in the machine direction. Therefore, using the high-stretch fabric 2 on the back side of the swimsuit and the same fabric as in Example 1 on the front side, FIG.
As shown in the figure, a swimsuit for women of the same shape as that of Example 3 was produced, in which the stretching force in the body length direction of the fabric used on the front side was smaller than the stretching force in the body direction of the fabric on the back side. .

(Embodiment 8) The stretchable fabric used in the swimsuit according to the present embodiment has a water-repellent portion 3 having a width of 8 mm using a fluorine-based water-repellent on the surface of the fabric of Example 1. Width 8
The fabric used was printed so that the non-water-repellent portion 4 mm and the non-water-repellent portion 4 formed a continuous stripe parallel to the body length direction. Using this cloth, a women's swimming suit having the same shape as in Example 2 was produced as shown in FIG.

(Embodiment 9) The stretchable fabric used in the swimsuit according to the present embodiment is made of a water-repellent agent having a width of 8 mm by using a fluorine-based water repellent on the surface of the fabric of Example 1. A continuous water-repellent portion 5 that has been processed, a water-repellent portion 6a that has been subjected to a water-repellent process with a width of 8 mm, and a non-water-repellent portion 6b that has not been subjected to the water-repellent process.
The fabric was printed so that the intermittent water-repellent portion 6 formed intermittently with the intermittent water-repellent portion 6 formed a continuous stripe parallel to the body length direction. Using this cloth, a women's swimming suit having the same shape as in Example 2 was produced as shown in FIG.

(Embodiment 10) As the stretchable fabric used in the swimsuit according to the present embodiment, the fabric of Embodiment 1 was used, and as shown in FIG. A swimsuit for women that is formed continuously from the waist on the back side to the back of the thigh along the body length direction, and is formed so that there is no change in the hip part. Was prepared.

(Comparative product 1) Using the fabric of Example 1, a conventional women's swimming suit with only the trunk portion covered and an opening in the center at the back as shown in FIG. 12 was produced.

(Comparative product 2) Using the cloth of Example 1, a brief type conventional swimsuit for men was manufactured as shown in FIG.

The results of the above experiments are shown below. First,
Table 1 shows the results of comparison of the surface frictional resistance of the swimsuits according to the examples and observation of the vibration and deformation of the player's muscles in running water from Experiment 1.

[Table 1]

As can be seen from the above experimental results, the resistance value of both the women's swimsuit and the men's swimsuit is lower than that of the conventional comparative example. In the result of the above-mentioned women's swimming suit, Example 1
Comparing the resistance values of (4) and (4), it can be seen that the smaller the exposed portion of the skin, the lower the resistance value. This is because, in the swimsuit according to the present invention, the larger the area in which the cloth for the swimsuit moderately presses the muscles of the swimmer and corrects the body shape is larger, the more the effect of suppressing vibration and deformation due to water flow and reducing the unevenness of the muscles. This is because the effect of reducing the resistance that the swimmer receives due to the water flow is also increased.
This tendency can be similarly confirmed also in the men's swimming suit by comparing the resistance values of Examples 2 to 4.

In the results of the above-mentioned women's swimwear,
When Examples are compared with Examples 8 and 9, Examples 8 and 9
Is lower because the water-repellent treatment applied to the surfaces of the swimsuits according to Examples 8 and 9 contributes to the reduction of the surface frictional resistance. In addition, when the results of the above-mentioned women's swimwear were compared between Example 2 and Example 10, the resistance value of Example 10 was lower. Because it is composed of a piece of fabric that is continuous along the body length direction from the waist to the back of the thigh, there is no step at the hip, the flow of water becomes smoother, and it contributes to the reduction of resistance It is.

Next, Table 2 shows the results of observing the change in the posture of the player who actually swims while wearing the swimsuit according to each example from Experiment 2. In addition, the posture state is 10
This is a comparison made after swimming at 0 m.

[Table 2]

As can be seen from the above experimental results, the lowering of the lower body of the women's swimsuit and the men's swimsuit is less than that of the comparative example which is a conventional product. In particular, in Example 7, the waist, thighs, and lower legs were hardly submerged even after swimming about 100 m, and the swimmer's posture was maintained substantially parallel to the water surface. You can see that. This means that the swimsuit according to the seventh embodiment is formed such that the stretching force in the body length direction of the fabric used on the front side is smaller than the stretching force in the body length direction of the fabric on the back side. This is because the fabric on the side can support the lowering of the waist, knees, and feet.

Also, among the resistances that a swimmer receives underwater,
In view of the large influence on the shape resistance occupying the largest weight, it can be seen that the swimsuit according to the present invention, in which the lower body is less sunk than the comparative example, greatly contributes to the resistance measurement of the swimmer. .

[0047]

The swimming race swimsuit according to the present invention has the following effects because it is configured as described above. That is,
The swimsuit according to the present invention supports the position of the waist, knees, and feet with respect to the position of the swimmer's head, sinking downward,
The whole body can be kept parallel to the water surface as much as possible, which is effective in reducing shape resistance. In addition, the swimsuit according to the present invention has the effect of correcting the body shape, suppressing the vibration and deformation of muscles, and reducing not only resistance but also muscle fatigue due to power loss of muscles during swimming. Furthermore, the swimming suit according to the present invention has an effect of reducing surface frictional resistance by performing the water repellent treatment on the fabric surface. Therefore, the swimsuit according to the present invention can greatly contribute to the improvement of the competition record.

[Brief description of the drawings]

FIG. 1 is a front view of a swimsuit according to the present invention, which is formed continuously from the trunk except the arms to above the knees of the thighs, and has an opening at the center of the back; It is a rear view.

FIG. 2 is a front view and a rear view of the swimsuit according to the present invention, which is formed continuously from the trunk excluding the arms to above the knees of the thighs.

FIG. 3 is a front view and a rear view of the swimsuit according to the present invention, which is formed continuously from the trunk except the arms to the ankles of the lower legs.

FIG. 4 is a front view and a rear view of the swimsuit according to the present invention, in which the swimsuit from the arm and the trunk to the ankle of the lower leg is continuously formed.

FIG. 5 is a front view and a rear view of the swimsuit according to the present invention, which is formed continuously from the waist to above the knee of the thigh.

FIG. 6 is a front view and a rear view of the swimsuit according to the present invention, which is formed continuously from the waist to the ankle of the lower leg.

FIG. 7 is a front view and a rear view of the swimsuit according to the present invention, in which the stretching force in the body length direction of the fabric used on the front side is smaller than that of the fabric on the back side in the body length direction. .

FIG. 8 is a front view and a rear view of the swimsuit according to the present invention, which has been subjected to a water-repellent treatment so as to form a continuous stripe parallel to the body length direction.

FIG. 9 is a swimsuit according to the present invention, in which a continuous water-repellent portion and an intermittent water-repellent portion are subjected to a water-repellent print processing so as to form a continuous stripe parallel to the body length direction. It is a front view and a rear view.

FIG. 10 is a front view and a rear view of the swimsuit according to the present invention, which is composed of a piece of cloth that is continuous from the back waist to the back of the thigh along the body length direction.

FIG. 11 is a diagram showing a schematic view of an experiment conducted to measure a resistance value and the like of the swimming suit according to the present invention.

FIG. 12 is a front view and a rear view of a conventional swimsuit that covers only the trunk and has an opening in the center at the back.

FIG. 13 is a front view and a rear view of a brief type conventional swimsuit.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Low-stretch fabric 2 High-stretch fabric 3 Water-repellent part 4 Non-water-repellent part 5 Continuous water-repellent part 6 Intermittent water-repellent part 6a Water-repellent part 6b Non-water-repellent part

Claims (10)

[Claims] 1. A swimsuit made of stretchable fabric, wherein a swimsuit is formed continuously from the trunk excluding the arms to the knees of the thighs. 2. A swimsuit made of stretchable fabric, wherein a swimsuit from the trunk excluding the arms to the ankle of the lower leg is continuously formed. 3. A swimsuit made of stretchable fabric, wherein a swimsuit is formed continuously from an arm and a trunk to an ankle of a lower leg. 4. A swimsuit made of stretchable fabric, wherein the swimsuit is formed continuously from the waist to above the knee of the thigh. 5. A swimsuit made of stretchable fabric, wherein a swimsuit is formed continuously from the waist to the ankle of the lower leg. 6. The stretching force in the body length direction is from 0.35 to 0.60.
The swimsuit according to any one of claims 1 to 5, wherein the swimsuit is made of a cloth weighing kg (JIS L1096, at 30% elongation, per 5 cm sample width). 7. On the back side of the swimsuit, the stretching force in the body length direction is 0.35 to 0.60 kg (JIS L1096, 30%
When stretched, a stretchable fabric having a width of 5 cm per sample) is used.
The swimsuit according to any one of claims 1 to 5, wherein the back side fabric has less elasticity in the body length direction. 8. The method according to claim 1, wherein a water-repellent portion and a non-water-repellent portion are formed on the surface of the stretchable fabric in a continuous stripe shape parallel to the body length direction. The swimsuit according to any one of the above. 9. A continuous water-repellent portion in which the surface of the stretchable fabric is continuously subjected to water-repellent treatment, a water-repellent portion in which water-repellent treatment is performed, and a non-water-repellent non-water-repellent portion. The swimming swimsuit according to any one of claims 1 to 7, wherein the intermittent water-repellent portion formed intermittently with the portion is formed in a continuous stripe shape parallel to the body length direction. 10. A swimsuit made of stretchable fabric, wherein the swimsuit is formed of a piece of fabric that is continuous from the waist on the back side to the thighs along the body length direction, and the hips are not switched. 10. The swimsuit according to any one of items 1 to 9.