JP5855347B2 - Crawl practice swimsuit - Google Patents

Description

  The present invention relates to a practice swimsuit that is optimal for learning crawls.

  Many buoyancy aids used in pools have been proposed so far. For example, Patent Document 1 discloses a swimsuit that attaches buoyancy aids to chest and back portions to assist underwater exercise. As a swimming aid, a columnar buoyancy material (so-called helper) attached to the waist is well known.

  By the way, it is said that the trick to mastering crawl is to create the correct underwater posture (streamline). If your body is strong and your head is not fully submerged, your lower body will sink and you will not be able to create a correct underwater posture.

  The swimsuit disclosed in Patent Document 1 floats with a buoyant material on the entire front and back of the upper body, so that you can swim without a face in the water, float on your back for relaxation, or float vertically It is effective against this. However, when crawling, the buoyancy of the upper body is too large compared to the lower body and the lower body sinks, making it difficult to take a correct underwater posture.

  On the other hand, a so-called helper (buoyancy material fixed to the waist of the back with a strap) attaches the buoyancy material to the waist portion, so when applied to a crawl, the head easily sinks and breathing is difficult. In addition, there is a problem for the user to maintain a comfortable and preferable underwater posture, such as slippage and biting into the abdomen in order to stick to the body with a string. The so-called helper is a buoyancy material that was devised and developed by a swimming instructor to instruct a group, and that priority is given to ease of wearing by everyone and ease of management. The applicant and the inventors do not deny the effect of this product, but until they claim that it is essentially different from the present invention based on the specific purpose of mastering crawl.

JP 2000-255488 A

  This invention is made | formed in view of the above situations, and it aims at providing the optimal swimsuit for acquisition of a crawl.

  In order to achieve the above object, a swimsuit according to the present invention is provided with a stretchable swimsuit body; mounted on the swimsuit body and positioned under the left and right armpits of the wearer, and does not hinder the stroke motion of the upper body A pair of buoyancy materials for the upper body arranged so as not to cover the scapula; and mounted on the swimsuit body, located on the thigh side from the left and right buttocks of the wearer, And a pair of buoyancy members for the lower body arranged so as not to be applied to the base of the leg.

  Preferably, in order to keep the wearer's underwater posture horizontal, in consideration of the wearer's buoyancy, the buoyancy material for the lower body is greater in buoyancy than the buoyancy material for the upper body, or equivalently Set as follows.

  As shown in FIG. 1, the underwater buoyancy B is slightly above the center of gravity G (on the head side and around the groove). In the present invention, by placing auxiliary tools at the four points of the body (two points on the upper body and two points on the lower body), the body naturally floats around the buoyancy, making it easier to maintain a correct underwater posture. In addition, by applying buoyancy to the side of the armpit and buttocks, the body can maintain the correct underwater posture without rotating the body from side to side in the water.

  Specifically, the buoyancy material under the arm can prevent the head from sinking during breathing. This is similar to having your hand support the side that tends to sink when you put your face on the surface with breathing. In addition, if the arm is placed on the shoulder blade from the armpit, the movement of the crawl arm will not be hindered. On the other hand, the buoyancy material on the lower body side is positioned so as not to reach the base of the leg from the side of the buttocks so as not to hinder the movement of the hip joint caused by the kick. Note that a one-piece type swimsuit is suitable for preventing the swimsuit from being displaced and ensuring the stability of the position of the buoyancy material. In the case of the one-piece type, it is preferable to provide a fastener on the front surface from the neck to the lower abdomen so that it can be easily attached and detached. On the other hand, it can be said that the separate type is more suitable in terms of ease of attachment and detachment.

  When the swimsuit which concerns on this invention is worn, the correct underwater attitude | position at the time of crawling can be taken easily. That is, the body naturally floats with the buoyancy as the base point, and it becomes easy to maintain a correct horizontal posture that is generally horizontal and symmetrical. Further, by applying buoyancy to the side of the armpit and the buttocks, it becomes easy to maintain a correct underwater posture without rotating the body left and right in the water. Placing buoyancy material on the chest and back makes it easier for the body to rotate (roll), making it difficult to maintain the correct underwater posture. In the present invention, as a result of many experiments, many beginners have achieved crawl learning in a short period of time.

When 7 people who could not swim were allowed to wear the swimsuit of the present invention and practiced crawl, on the 7th day (2 days a week x 1 hour practice), 5 people could crawl more than 25m. . Two of them were able to swim for more than 50m with the buoyancy material removed. The crawl acquisition (25m swim) period is generally said to take an average of about 20 months (practice 1-2 days a week x about 1 hour) in a swimming club. I understand.

FIG. 1 is a schematic diagram showing a center of gravity position G and a buoyancy position B of a person. FIG. 2 is a front view (A) and a rear view (B) showing the structure of the swimsuit according to the present invention. FIG. 3 is a plan view showing a buoyancy material used in the swimsuit according to the present invention. FIG. 4: is a perspective view which shows the wearing condition of the swimsuit which concerns on this invention, and each shows a mode that it saw from the front (A), diagonally horizontal (B), the side surface (C), and the back surface (D). FIG. 5 is a front view (A) and a rear view (B) showing the position of the buoyancy material on the wearer's body.

  FIG. 2 is a front view (A) and a rear view (B) showing the structure of the swimsuit 10 according to the present invention. FIG. 3 is a plan view showing the buoyancy material (14, 16) used in the swimsuit 10. As shown in FIG. FIG. 4 is a perspective view showing a wearing state of the swimsuit 10 and shows a state seen from the front (A), the oblique side (B), the side (C), and the back (D). FIG. 5 is a front view (A) and a rear view (B) showing the position of the buoyancy material (14, 16) on the wearer's body.

  A swimsuit 10 according to the present invention is a practice swimsuit used for learning crawls, and has a stretchable swimsuit body 12; mounted on the swimsuit body 12 and positioned on the left and right armpits of the wearer, and strokes of the upper body A pair of buoyancy members 14 for the upper body, which are arranged so as not to interfere with the scapula so as not to hinder the movement; and are mounted on the swimsuit body 12 and located on the side of the thigh from the left and right buttocks of the wearer, A pair of buoyancy members 16 for the lower body are arranged so as not to interfere with the base of the leg so as not to hinder the hindrance. The position of the buoyancy material 14 for the upper body is, for example, such that the upper edge is 15 mm (W) from the lower end of the cuff of the swimsuit.

  As shown in FIG. 3, the buoyancy material 14 is formed into a rectangular shape with smooth corners, and the buoyancy material 16 is formed into an inverted triangle shape. The pair of left and right buoyancy members 14 are arranged symmetrically and have the same buoyancy. Similarly, the pair of left and right buoyancy members 16 are also arranged symmetrically and have the same buoyancy. The pair of left and right buoyancy members 14 are formed so as not to contact each other on either the chest side or the back side. Similarly, the pair of left and right buoyancy members 16 are formed so as not to contact each other on either the front side or the back side. By adopting such an arrangement and shape, the wearer's body is supported at four points, and rolling in water more than necessary is suppressed.

  The buoyancy members 14 and 16 are preferably made of an independent foam material. Further, the buoyancy members 14 and 16 can be structured to be accommodated in pockets provided inside the swimsuit body 12.

  Considering the arrangement of the buoyancy materials 14 and 16 and the wearer's buoyancy as described above, the buoyancy material 16 for the lower body is more than the buoyancy material 14 for the upper body in order to keep the wearer's underwater posture horizontal. It is preferable to have a large buoyancy. For example, in the case of a child weighing 20 kg, the buoyancy for two upper body buoyancy members 14 is less than 1 kg (0.82 kg, etc.), and the buoyancy for two lower body buoyancy members 16 is about 1 kg (0. 9 kg). That is, the ratio of the buoyancy between the buoyancy material 14 and the buoyancy material 16 is about 9:10. In the case of an adult, the same buoyancy ratio (about 9:10) can be used by increasing the buoyancy of the buoyancy members 14 and 16.

  As shown in FIG. 5A, the upper body buoyancy material 14 has, for example, a thickness t = 10 mm (or 15 mm) and a length and width of 12 cm × 21 cm. Further, the buoyancy material 16 for the lower body has, for example, a rounded inverted triangular shape with a thickness t = 10 mm (or 15 mm), a width of 17 cm × a length of 19 cm.

  After starting to learn crawl by wearing the swimsuit 10 according to the present invention, the buoyancy of the buoyancy materials 14, 16 is lowered when improved to some extent, for example, a thick (t = 15mm) buoyancy material is thin (t = 10mm) It is preferable to instruct to remove the buoyancy materials 14 and 16 when they are completely acquired. More specifically, a buoyancy material with a thickness t = 15 mm (buoyancy: 0.41 kg × 2 for the upper body and 0.45 kg × 2 for the lower body) is used first, and then a buoyancy material with a thickness t = 10 mm ( Buoyancy: 0.27 kg × 2 for the upper body and 0.3 kg × 2) for the lower body. The goal is to be able to swim without a buoyancy material in the end, and the system is designed to guide you to swim in stages by reducing the buoyancy material.

  When actually instructing a child to crawl, it is preferable to watch a video image containing the instruction method in advance, bring a waterproof textbook to the poolside, and instruct while watching the textbook. For example, the swimsuit according to the present invention will be packaged and sold together with instructional DVDs (other storage media) and waterproof text. As a result, a person (parent) who has no swimming instruction experience can instruct a child to learn to crawl.

  As mentioned above, although the Example of this invention was described, this invention is not limited to these Examples at all, It can change in the category of the technical idea shown by the claim. In the embodiment described above, a one-piece type swimsuit in which the upper body and the lower body are connected is employed, but a separate swimsuit in which the upper body and the lower body are separated can also be employed.

10: Swimsuit for practice 12: Swimsuit body 14: Buoyant material for upper body 16: Buoyant material for lower body

Claims (5)

In a crawl practice swimsuit used to learn crawls,
A swimsuit body having elasticity;
A pair of buoyancy materials for the upper body that are attached to the swimsuit body and are positioned under the left and right armpits of the wearer and arranged symmetrically so as not to cover the scapula so as not to obstruct the stroke motion of the upper body;
A pair of buoyancy for the lower body that is attached to the swimsuit body and is located on the side of the thigh from the left and right buttocks of the wearer, so as not to hinder the kicking operation, and not to be applied to the base of the leg, and symmetrically arranged With materials,
The buoyancy material for the lower body is more buoyant than the buoyancy material for the upper body based on the buoyancy of the wearer so as to keep the wearer's underwater posture horizontal and suppress rolling in water. A crawl practice swimsuit characterized by being set to be large. The buoyancy material for the upper body and the buoyancy material for the lower body are structured to be accommodated in a pocket provided inside the swimsuit body,
The swimsuit for crawl practice according to claim 1, wherein the buoyancy material is replaceable in accordance with a wearer's crawl acquisition level. The pair of buoyancy materials for the upper body are arranged symmetrically with respect to the swimsuit body, and the buoyancy is the same,
The pair of buoyancy members for the lower body are also arranged symmetrically with respect to the swimsuit body, and the buoyancy is the same,
The swimsuit for crawl practice according to claim 1 or 2, wherein a ratio of buoyancy between the buoyancy material for the upper body and the buoyancy material for the lower body is 9:10 . The swimsuit for crawl practice according to any one of claims 1 to 3, wherein the buoyancy material is made of a plate-like independent foam material. The swimsuit for crawl practice according to any one of claims 1 to 4, wherein the swimsuit body is a one-piece type in which an upper body and a lower body are connected.

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