KR20130088340A - Spreadable fin - Google Patents

Abstract

PURPOSE: A spreadable fin is provided to enable beginners or children to swim without fear of water and to improve a propulsive force. CONSTITUTION: A spreadable fin comprises a bracket detachable from an ankle having wing rotary shafts (6a, 6b, 6c, 6d), rotary shaft holes (5a, 5b) which are combined with the rotary shaft of the bracket, and wings (1a, 1b) which are folded around the rotary shaft. The spreadable fin has a belt for fixing a left bracket (7a) and a right bracket (7b). The belt prevents the brackets from being pushed backwards while a user kicks.

Description

Wing development flippers {Spreadable Fin}

The present invention is a swimming aid that can be easily swim by simply wearing the device in the water without a special skill or training as a swim aid, and simply a vertical leg movement.

The swimming aids, so-called "FIN", which are used so far, are represented by the swimmer wearing flippers 19 and flippers 21 on the left leg 18 and the right leg 20, respectively, as shown in FIG. The legs will alternately move forward and backward through the S-shaped movements to gain forward momentum. A person with basic swimming skills should be able to swim safely in water only when they have mastered the skill of "footboard" swimming through sufficient training. There is a problem of low propulsion speed.

The present invention is to solve this problem and to be able to swim easily to people who can not swim just a simple movement of the legs, even those who have not learned to swim repeated wearing the ankle and bent legs of the swim aids of the present invention The goal is to make it easy to swim by simply doing so that even beginners and children can easily swim or play in the water without fear of swimming.

In order to achieve the object of the present invention, as shown in FIGS. 2 and 3, the semicircular portion 2a surrounding the ankle portion and the portion 3a surrounding the instep portion, the portion 4a surrounding the heel 4a and the rotating shaft fixing hole 5a are provided. The left wing (1a) of the "wing development flippers" and the left ankle racket (7a) coupled thereto, the right wing (1b) of the "wing development flippers" symmetrical with the left wing more than, the right ankle racket When the left and right wings (1a) and (1b) bend the knees by combining (7b), they are folded as shown in FIG. 5, and the wings (1a) and (1b) are widened as shown in FIG. With maximum resistance, the swimmer's body moves forward, making it easier for people who can't swim with this simple exercise.

As described above, anybody of the present invention 'winged flippers' can easily swim even beginners and children can swim safely without fear of water in the pool or beach, and physical strength is low even for professionals such as scuba, and the driving force is great Can provide an effect.

1 is an example of a conventional flippers swimming
Figure 2 is a view showing the left side of the wing type flippers of the present invention
Figure 3 is a view showing the front of the winged flippers of the present invention
Figure 4 is a perspective view of the wings folded flippers of the present invention folded
Figure 5 is a view showing the front wearing a winged flippers of the present invention
Figure 6 is a view showing that the wings of the wing development flippers of the present invention deployed

For the purpose of the present invention when worn on the ankle as shown in Figure 3 minimizes the resistance of the water externally and internally so as not to cause discomfort to the worn foot foot protrusion (3a), ankle protrusion (2a) ), The left wing (1a) is formed with a blade rotation shaft hole (5a) to be coupled to the heel projection (4a) and the rotation axis (6a) of the sub-rack (7a), these left wings (1a), symmetrical with the left side racket (7a) Combining the right wing (1b), the right side racket (7b) to form the "developing flippers" of the present invention as shown in FIG.

  When wearing the "developing flippers" of the present invention, when the user bends the knees in the water and raises the legs up, the left wing 1a, the right wing 1b of the deployable flippers are folded down as shown in FIG. It's minimal and it's easy to lift your legs up.

At this time, if you stretch your knees as much as possible and stretch the bent legs vigorously, the left wing 1a and the right wing 1b are rotated around the rotational shafts 6a and 6b, respectively, with the resistance of water, and are developed as shown in FIG. The body moves forward by the reaction while receiving the maximum resistance of water in the direction of extension, and the forward speed is accelerated by the repeated motion of bending the knee.

1a.Left wing 1b.Right wing 2a. Left ankle protrusion 2b. Right ankle protrusion 3a. Left foot protrusion 3b. Right foot protrusion
4a.Left heel protrusion 4b.Right heel protrusion
5a.Left wing rotary shaft hole 1 5b.Right wing rotary shaft hole 1
5c.Left wing rotary shaft hole 2 5d.Right wing rotary shaft hole 2
6a. Left wing rotary shaft 1 6b. Left wing rotation axis 2
6c. Right wing rotary shaft hole 1 6d. Right wing rotary shaft hole 2
7a. Left side racket 7b. Right side racket
8.Bracket fixing belt 9.Instep
10.Ankle 11.Bracket fixing belt

Claims (3)

Rotating shaft hole coupled to the rotating shafts 6a, 6b, 6c and 6d of the sub-rackets 7a and 7b and the sub-rackets 7a and 7b, which are attached to and detached from the ankle having the blade rotation shafts 6a, 6b, 6c and 6d. A deployable flipper configured to form (5a, 5b, 5c, 5d) so that both wings (1a, 1b) can be rotated and opened and closed about a rotation axis. It is connected to the left side racket (7a) and the right side racket (7b) of the developed flippers by connecting the belt (8) to prevent the detachable sub-racks (7a, 7b) from being pushed when the user stretches the legs for swimming Expandable flippers.
Deployable flippers equipped with a belt for fixing the left side racket 7a and the right side racket 7b to wear the deployable flippers on the user's ankle 10.

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