JPH0626922U - Swim practice float - Google Patents

Abstract

(57) [Abstract] [Purpose] A hollow body buoy capable of imparting an appropriate amount of load to the tip portion as a means for adjusting buoyancy is carried by a strap and swims, so that the load imparted to the buoy is maintained during swimming. It does not move freely with the movement of the body, and makes it easy to learn to swim using the buoy while the buoy is fitted to the body stably. [Structure] A single or a plurality of closed hollow body buoys, and a load chamber at the tip of the buoy that can store an appropriate amount of water inside with a lid that can be opened and closed is separated from the inside of the hollow body buoy. The hollow body buoy is provided with a string body having detachable stoppers at both ends for fixing the buoy to the body.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 INDUSTRIAL APPLICABILITY The present invention is a float used for swimming practice, more specifically, a swim practice float for fixing a hollow buoy to the body with a string and imparting buoyancy to a part of the body to learn swimming. It is about.

[0002]

[Prior art]

 Conventionally, this type of practice float has a buoy made of Styrofoam tied to the waist of the back with a string to give buoyancy to the waist, especially for beginners. Floats are known.

In addition, the buoy made of Styrofoam is too bulky and the buoyancy cannot be adjusted freely, so the buoy can be opened and closed for those who have practiced and can swim to some extent. It is also known that the buoyancy can be freely adjusted by forming an airtight small hollow body with a flexible lid and injecting an appropriate amount of water into the inside.

As a float using the above hollow body buoy, two parallel hollow body buoys are sandwiched between both legs to train the arm stroke while giving buoyancy to both legs. However, as in the case of Japanese Utility Model Laid-Open No. 4-25764, such a float is designed so that it can be used by adults and children with different leg thicknesses. By providing a string conduit that is arranged so that the airtight state can be maintained, insert the string that connects each buoy into this string conduit, and change the knot position of the string to allow free spacing between the buoys. It is known that it can be adjusted.

[0005]

[Issues to be solved by the device]

 The buoyancy of the above hollow body buoy can be adjusted freely by injecting an appropriate amount of water into it, so this kind of float is tied to the waist with a string to give it buoyancy. When used for, it can be said to be preferable as a float for those who have improved their swimming somewhat. However, in a hollow body buoy, an appropriate amount of water injected to adjust the buoyancy causes large fluctuations inside the buoy as the body moves, making it difficult to swim.

For example, when a hollow body buoy in which a suitable amount of water is injected is fixed to the lumbar region of the back and swims, when the body tilts upward from the horizontal state, the water inside is at the bottom of the buoy. It moves to the side and adds weight to the lower part of the body, and conversely when the body tilts downward from the horizontal state, the water inside moves to the upper side of the buoy and reaches the upper part of the body. It will add weight.

When the upper body is pulled up from the water to the surface of the water by sprinkling water with the arm like a breaststroke, the back is inclined upward and a weight is added below the buoy. If the upper body is submerged in the water, the back will be almost horizontal, and when the back is submerged, the tip of the buoy will momentarily recoil and upward, which makes it difficult to swim. The phenomenon in which the tip of the buoy is swung upward by the recoil is that the back of the buoy is twisted and turned rapidly from an upward state like a turn, and then the back is placed horizontally or downward with respect to the water surface. It also occurs when changing to. Further, in the crawl swimming method, the left and right sides of the body constantly move up and down alternately, so that there is a problem that the water in the buoy gives unnecessary weight in the downward direction of the body each time.

[0008]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems of the conventional floating float for swimming practice using a hollow body buoy, the present invention can freely adjust the buoyancy by injecting an appropriate amount of water into the float. Since the load of the buoy is fixed at a predetermined position of the buoy and does not shake or move freely even by the movement of the body, the purpose is to provide an aerial buoy type swimming practice float that does not hinder swimming. It was done.

The float for swimming practice according to claim 1 of the present invention comprises, as a specific means for achieving the above object, one or a plurality of closed hollow body buoys, and the tip of the buoy. A load chamber that can store an appropriate amount of water inside with a lid that can be opened and closed is provided separately from the inside of the hollow body buoy, and the hollow body buoy is used to fix the buoy to the body. It is characterized in that a cord body having detachable stoppers is attached to both ends.

Further, in the swimming practice float according to the second aspect of the present invention, both ends of the float for swimming practice are connected to opposite wall surfaces in the hollow body buoy having a load chamber capable of storing an appropriate amount of water. For fixing the buoy to the body, the cord conducting pipe is connected to the wall surface and opens to the outside of the wall, and the conduit has a penetrating pipe penetrated so as to maintain airtightness inside the buoy. It is characterized in that the cord body of is inserted.

Further, in the swimming practice float according to a third aspect of the present invention, the string body for fixing the hollow body buoy to the body comprises a rubber flat belt having stoppers at both ends, and the string is provided on both sides of the buoy. Outside the string conduits to be placed, slip stopper plates each having a slit-shaped through hole slightly smaller than the cross section of the belt are arranged so that the belts penetrating into the buoy string conduit are the slip stoppers. It is characterized in that it is led out to the outside of the buoy through a through hole in the plate.

[0012]

[Action]

 In the swimming practice float according to claim 1, a load chamber capable of storing an appropriate amount of water therein is provided at the tip of the closed hollow body buoy, which is separated from the inside of the hollow body buoy. Therefore, a swimmer can swim by fixing a compact hollow body buoy whose buoyancy is adjusted by the load due to the weight of water being always located at the tip.

When the load is always fixed to the tip of the buoy in this way, the body leans upwards and downwards from the horizontal state during swimming, or the left and right sides of the body constantly move up and down alternately. However, since the water inside does not move up and down or left and right in the buoy each time, there is no sense of instability due to the movement of the load, and the back is sunk in the water like a breaststroke. Also, unlike the case of a turn, when the body rapidly rotates, the tip of the buoy does not recoil and is not lifted upwards, so it is possible to eliminate the difficulty in swimming due to the sway of the buoy.

In the swimming practice float according to a second aspect of the present invention, at both ends of the hollow body buoy that connect the opposite wall surfaces, both ends are connected to the wall surface and open outside the wall, and the conduit is Since it has a string-conducting tube that penetrates so as to maintain the airtightness inside the buoy, it is possible to insert the string into the string-conducting tube while maintaining the sealed state of the hollow body buoy. The buoy can be fixed to the body by the body. This configuration is particularly suitable when a plurality of hollow body buoys are used in combination in parallel, and it is possible to freely adjust the interval between the buoy fixing positions of the communicating string bodies.

Further, in the swimming practice float according to claim 3, the cord body for fixing the hollow body buoy to the body is a rubber flat belt having stoppers at both ends, and the cord body is located on both sides of the buoy. On the outside of the cord connecting pipe, there are arranged anti-slip plates each having a slit-shaped through hole that is slightly smaller than the cross section of the belt, and the belt penetrating into the buoy string conducting pipe is inserted through the anti-slip plate. Since it is led out to the outside of the buoy through the hole, the belt is firmly fixed at the position passing through the through hole of the anti-slip plate. Therefore, even if the buoy itself cannot be fixed to the belt, the belt is fixed by the pair of anti-slip plates arranged on both sides of the buoy, so that the buoy placed on the back shifts as the body moves. Can be prevented and can be carried on the back stably.

[0016]

【Example】

 The structure of the swimming practice float according to the present invention will now be described with reference to the embodiment shown in the drawings. In FIG. 1, two hollow body buoys 1 of the same shape and size are combined in parallel with each other. For example, each buoy 1 is a synthetic resin circular or prismatic hollow body 2 whose outer periphery is completely sealed, and the inside of the hollow body 2 at the tip of the hollow body 2 forms a partition wall 3. It is composed of a load chamber 4 which is provided more isolatedly and can store an appropriate amount of water inside.

The load chamber 4 is composed of an independent container fitted and fixed to the tip of the hollow body 2, and the load chamber 4 is opened and closed via an openable lid 5. An appropriate amount of water of about 20 to 30 g can be injected into the inside of the chamber 4. Further, the upper surface of the load chamber 4 including the portion of the lid 5 is formed in a dome shape so as to minimize resistance to water, and the lid 5 extends from the lower end of the load chamber 4. In a state of being attached to the tip of the knot 7, it is detachably attached to the opening 6 of the load chamber 4.

Further, inside the hollow body 2, a string conducting tube 8 having a predetermined inner diameter is provided at a position where the peripheral walls 2a and 2b facing each other of the hollow body 2 are connected to each other so as to cross the inner space. Several are provided. These string conducting pipes 8 connect the pipe ends 9 having the flanges 10 fitted from the outer side to the inner side of the peripheral walls 2a, 2b, and the both pipe end portions 9, 9 together. The pipe 11 is inserted, and the peripheral walls 2a and 2b and the flange 10 and the pipe end 9 and the pipe 11 are both water-tightly bonded with an adhesive, and therefore, the string conductor is connected. Both ends of the tube 8 are connected to the peripheral walls 2a and 2b and open outward, and the conduit of the string conducting tube 8 is penetrated so as to maintain the airtightness of the inner part of the hollow body 2. There is.

In the string conducting tube 8 of each of the buoys 1 arranged in parallel, a string body 12 having a length capable of carrying the buoy 1 on the back is inserted. Then, the cord body 12 is composed of a stretchable rubber flat belt 13. In this belt 13, one end 13a is passed through the upper string conducting tube 8 of the buoy 1, and then the lower string conducting tube 8 of the buoy 1 is passed through, and the other end 13b and the stop ring 14 are used to appropriately adjust the connecting position. It is connected in a loop so that you can. Further, the stoppers 15 for detachably connecting the both ends of the loop belt 13 are attached to both ends of the belt 13 connected in a loop shape as described above.

Further, on the outer sides of the string conducting tubes 8 located on both sides of each of the buoys 1 arranged in parallel with each other, a slip having a slit-shaped through hole 17 slightly smaller than the cross section of the belt 13 is provided. Stop plates 16 are respectively arranged so that the belt 13 penetrating the string conducting tube 8 is led out to the outside of the buoy 1 through the through hole 17 of the anti-slip plate 16.

As described above, the anti-slip plates 16 having the slit-shaped through holes 17 slightly smaller than the cross section of the belt 13 are arranged outside the string conducting tubes 8 located on both sides of each buoy 1. The reason is that the buoy 1 cannot be securely fixed to the belt 3 only by passing the belt 13 through the string conducting tube 8 of the buoy 1. Therefore, when the anti-slip plates 16 are arranged on both sides of each buoy 1 and the belt 13 is passed through the through hole 17, the through hole 17 is slightly smaller than the cross section of the belt 13, and therefore the belt 1 3 is firmly fixed at the position of this through hole 17, and the buoy 1 is held against the belt 13 inside the anti-slip plates 16 on both sides.

The above embodiment is a case where two buoys 1 are combined in parallel, but the float of the present invention does not necessarily require a plurality of buoys 1. It may be one. In the case of one buoy 1, anti-slip plates 16 are arranged on both sides of the buoy 1, and the buoy 1 is fixedly held on the belt 13 by these anti-slip plates 16.

[0023]

[Effect of device]

 As described above, the swimming practice float according to the present invention is provided with the load chamber capable of storing an appropriate amount of water at the tip of the hollow body buoy, so that the swimmer can add the weight of water to adjust the buoyancy. Will swim with the hollow body buoy 1 fixed only at the tip of the buoy, and will swim up and down in the water, or even if it moves up and down alternately on both sides of the body. , Because the load is constantly held in place and does not sway, you can swim without feeling the instability associated with the movement of the weight, and the benefits obtained by swimming with a buoy should be appropriate. Can be mastered.

In addition, since the float for practicing swimming according to the present invention has a weight added only to the tip of the hollow body buoy, the back may be quickly submerged from a state where the back is lifted from the water like a breaststroke. Movement, or when the back is rapidly twisted from an upward position, such as during a turn, and when the back is then changed to horizontal or downward with respect to the surface of the water, the tip of the buoy may react. It is possible to accurately eliminate the phenomenon of being lifted upward, and to provide an easy-to-use floating device without the harmful effects of using this type of floating device.

Further, in the float according to the present invention, the non-slip plates having the slit-shaped through holes, which are slightly smaller than the cross section of the belt, are arranged outside the cord conduits located on both sides of the hollow body buoy. , The buoy itself can be easily adjusted to the attachment position with respect to the belt by the string conduit, and the belt can be inserted into the through hole of the anti-slip plate to substantially fix the buoy and the belt. As a result, there is an effect that the buoy placed at an appropriate position on the back can be accurately prevented from shifting with the movement of the body, and an appropriate swim can be obtained in a stable and carried state.

[Brief description of drawings]

FIG. 1 is a partially cutaway plan view showing a structure of a swimming practice float according to the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a side view as seen from the direction of the line BB in FIG.

FIG. 4 is an explanatory view showing a usage state.

[Explanation of symbols]

1: Buoy 2: Hollow body 3: Partition wall 4: Load chamber
5: Lid 6: Opening 7: Connecting Piece 8: String Conducting Tube 9: Pipe End 10: Flange 11: Pipe 12: String 1
3: Belt 14: Stop ring 15: Stopper 16: Anti-slip plate
17: Through hole

Claims (3)

[Scope of utility model registration request] 1. A load chamber which is composed of one or a plurality of closed hollow body buoys, and at the tip of the buoy has a load chamber capable of storing an appropriate amount of water therein by means of an openable / closable lid. A float for swimming practice, wherein the hollow body buoy is provided with a string body having detachable stoppers at both ends for fixing the buoy to the body. 2. Inside the hollow body buoy, both ends are connected to the wall surface and open to the outside at a position connecting wall surfaces facing each other, and a pipeline maintains airtightness inside the buoy. The float for swimming practice according to claim 1, further comprising a string-conducting tube that is penetrated as described above, and a string body for fixing the buoy to the body is inserted into the string-conducting tube. 3. A cord body for fixing the hollow body buoy to a body comprises a flat rubber belt having stoppers at both ends,
Outside the cord conduits located on both sides of the buoy, anti-slip plates each having a slit-shaped through hole slightly smaller than the cross section of the belt are arranged, and the belt penetrating into the buoy cord conduit is The swimming practice float according to claim 2, which is led out to the outside of the buoy through a through hole of the non-slip plate.