JP4945754B2 - Screwed swimwear - Google Patents

Description

  The present invention relates to a screwed swimming device that is attached to the body and used to assist underwater activities, underwater work, and the like performed in rivers, seas, and the like.

  Conventionally, as this type of swimming equipment, there is a fin (fin). The fin of the foot helps to swim by moving the foot up and down, and makes it possible to swim faster than swimming live. However, only about 10% of the power of the leg fins (fins) is used for propulsion. In addition, products with various fin shapes and designs have been created, but these are merely imitations of the fins of aquatic organisms.

Also equipped with underwater propellers on both sides of the body to increase the propulsive power in the water, that is, a string is attached to a pedal-type footboard for bicycles, and alternate bending and stretching movements by the left and right feet are applied to the tension of the string Proposal of a foot-swimming device configured to rotate the underwater propeller through a pulley integrated with a power transmission device that converts it into a revolving motion only in a certain direction and develops a thrust in the swimming direction (See Patent Document 1).
JP 2004-359117 A

  However, although the swimming implement proposed in Patent Document 1 can obtain propulsive force in the swimming direction by rotating the underwater propeller, it continues to alternately bend and stretch with the left and right feet while rotating the underwater propeller. However, the alternate bending and stretching movements by the left and right feet always generate water resistance against the propulsive force in the swimming direction, and there is a drawback that sufficient propulsive force cannot be obtained. In addition, alternating bending and stretching exercises with the left and right feet cause resistance to occur alternately in the order of left foot (right foot) → right foot (left foot) → left foot (right foot) in the direction of body movement, Because it acts to tilt, it is difficult to smoothly push the body in the direction of travel. For this reason, it is difficult to say that the proposal of Patent Document 1 is practical.

  The present invention has been made in view of the above circumstances, and accumulates leg power that exerts the greatest power in the body as energy for exercise, stably takes it out as kinetic energy, and propulsive force of the body by rotation of the screw An object of the present invention is to provide a screwed swimming device that can be obtained. In addition, a screwed swimming device that can obtain a body posture with little resistance when propelling the body by rotating the screw, and can smoothly promote the body in the direction of travel to achieve smooth underwater activities, underwater work, etc. The purpose is to provide.

In order to solve the above-mentioned problem, the screwed swimming device according to claim 1 according to the present invention is a swimming device to be used by being attached to a body,
One end of the wire is locked before the ankle, and the rotating shaft rotating mechanism unit that rotates the rotating shaft in one direction by the pulling force of the wire by the simultaneous bending and stretching motion of both feet or the left and right alternately stepping foot motion,
An energy storage unit that accumulates power energy by rotation in one direction of the rotating shaft;
A screw propulsion mechanism that rotates a screw disposed near the waist of the body by power energy supplied from the energy storage unit, and obtains a propulsion force of the body by rotation of the screw;
Comprising a wire rewinding mechanism for rewinding the wire stretched by tension ;
Each of the rotating shaft rotating mechanism unit, the energy storage unit, the screw propulsion mechanism unit, and the wire rewinding mechanism unit is attached to a waist belt that is attached to the waist of the body.

  According to the screwed swimming device according to claim 1, in the water, the swimmer performs a single kicking action, that is, simultaneous bending and stretching movements of both legs (breaststroke movement) or alternate left and right stepping leg movements, and pulls the wire. By rotating the rotating shaft of the rotating shaft rotating mechanism of the swimming equipment attached to the waist belt in one direction, the rotational force can be stored in the energy storage unit as power energy. After kicking, the power energy stored in the energy storage unit can be taken out and transmitted to the screw side, and the screw placed near the waist can be rotated to propel the body.

In other words, the screwed swimming device of the present invention temporarily accumulates a large amount of leg power energy that exerts the greatest power in the body in the energy storage unit, and stably extracts the accumulated kinetic energy from the energy storage unit. Thus, the screw can be rotated. The posture in which both feet are extended substantially parallel to the body after the kicking operation has less water resistance in water than in the bent posture of both feet, and the body can be smoothly pushed in the traveling direction. Thereby, smooth underwater activity and underwater work can be realized. Moreover, the wire extended | stretched by tension | pulling can be rewound smoothly and can prepare for the tension | pulling operation | movement of the next wire rapidly.

  According to a second aspect of the present invention, the energy storage unit winds the mainspring by rotating the rotating shaft in one direction, accumulates the power energy, and stores the accumulated power energy in the spring spring. It is the structure which takes out with a return force, It is characterized by the above-mentioned. By using the spring spring, the configuration of the energy storage unit can be made simple and durable.

  According to a third aspect of the present invention, there is provided the screw-equipped swimming apparatus, wherein a torque limiter is provided on the upstream side of the mainspring. By providing the torque limiter on the upstream side of the mainspring, it is possible to prevent the mainspring from being subjected to excessive rotational torque and damage to the mainspring.

According to a fourth aspect of the present invention, there is provided the screw-equipped swimming device, in which a part of the rotational force in one direction of the rotation shaft is accumulated in the energy storage unit as power energy, and at the same time, the remainder of the rotational force is transmitted to the screw side. And it is the structure which rotates a screw, It is characterized by the above-mentioned. A part of the rotational force in one direction of the rotating shaft is stored in the energy storage unit as motive energy, and at the same time, the remainder of the rotational force is transmitted to the screw side, and the screw is rotated, so that the energy storage unit It is possible to always obtain the propulsive force of the body by rotating the screw even during the accumulation of power energy.

According to the fifth aspect of the present invention, there is provided the screw-equipped swimming device, wherein the rotating shaft rotating mechanism portion on the other end side of the wire is disposed near the abdomen side center of the waist belt. By arranging the rotating shaft rotation mechanism near the center of the abdomen, the wire with one end locked before the ankle can be prevented from touching the body centered on the leg, and the wire is rubbed against the body. Can be prevented from causing damage or discomfort.

According to a sixth aspect of the present invention, there is provided the swimming equipment with a screw, the motor for rotating the screw by the electric power supplied from the battery, and the switching mechanism unit for switching the power transmission from the motor and the power transmission from the power transmission mechanism. And further comprising. If your leg muscles become fatigued due to simultaneous bilateral leg stretching exercises or alternate left and right stepping leg exercises, switch the screw power to the battery to continue to propel your body and continue underwater activities and work be able to.

As described above, according to the screwed swimming device according to the present invention, the wire locked on the tip of the ankle is pulled by the simultaneous bending and stretching exercises of both feet or the left and right alternate stepping exercises, and the greatest power in the body is obtained. The leg power to be exerted can be stored in the energy storage part as exercise energy, and the kinetic energy stored in the energy storage can be stably taken out, the screw can be rotated, and the body in a stable posture with little resistance Can be smoothly promoted, and this has an excellent effect that stable underwater activities and underwater work can be carried out.

  Next, the best embodiment of the swimming equipment with a screw according to the present invention will be described with reference to the drawings. FIG. 1 is a side view showing a state in which a swimsuit with a screw according to the present invention is attached to the waist of a body and performing underwater activities, and FIG. 2 is a front view thereof. In the same figure, the code | symbol 1 has shown the body and the code | symbol 10 has shown the swimming equipment with a screw.

  The screw-equipped swimming device 10 includes a rotating shaft rotation mechanism unit 20 including a wire, an energy storage unit 30, a power transmission mechanism unit 40, and a screw propulsion mechanism unit 50, one on each side. The body 1 is attached to a waist belt 71 of a swimming equipment fixture 70 attached to the waist 2 of the body 1.

  As shown in FIGS. 1 and 3, the rotary shaft rotating mechanism 20 locks one end of the wire 22 to a band 21 that is hooked before each ankle 3 a of both legs 3 of the body 1. The rotating shaft 25 is rotated in one direction (A direction) by the pulling force of the wire 22 by bending or stretching movement or left and right alternating stepping foot movement. The unwinding unit 23 that is unwound while being pulled, and the unwinding unit (wire winding) in which the unwound wire 22 is automatically unwound by tension in accordance with the bending action of the bilateral leg bending movement or the left and right alternate stepping leg movement. Return mechanism portion) 24 and a rotary shaft holding portion 20a that rotatably supports the rotary shaft 25.

  In the unwinding unit 24, a pulley 26 around which a wire 22 is wound around one end of a rotating shaft 25 is integrally connected to the rotating shaft 25, and the wire 22 wound around the pulley 26 is unwound to be directed to the rotating shaft 25 in one direction. A rotational force in the direction A (clockwise in FIG. 4) is applied. In the rewinding unit 24, a pulley 27 a is integrally connected to the other end of the rotating shaft 25, and the spring spring 28 for rewinding the wire is rotated by rotating the rotating shaft 25 in one direction (A direction). The other pulley 27b is wound around. Then, in accordance with the bending movement of both the leg flexion and extension movements or the left and right alternate stepping leg movements, the rotating shaft 25 is moved by the return tensile force of the wire unwinding spring 28 wound on the other pulley 27b side to the pulley 27a side. The wire 22 is automatically rewound in the direction (B direction: counterclockwise in FIG. 4), whereby the unwound wire 22 is automatically rewound. The rotary shaft 25 transmits only the rotation in one direction (A direction) to the downstream power transmission shaft 41 by a one-way clutch 42 described later, and the rotation in the other direction (B direction) is transmitted. It is designed to rotate freely without

  The energy storage unit 30 converts the rotational force in one direction (A direction) of the rotary shaft 25 due to the tensile force of the wire 22 into motive energy and stores it in one direction (A Direction) is once transmitted to the power transmission shaft 41 of the power transmission mechanism 40 via the power transmission wire 29 passed through the tubular waist belt 71, and then the direction of the power transmission shaft 41 is The rotational force in the (A direction) is transmitted to the energy storage spring 31 via the one-way clutch 42. The energy storage spring 31 is wound in one direction (A direction), so that power energy is stored in the spring 31. The power transmission wire 29 and the rotary shaft 25, and the power transmission wire 29 and the power transmission shaft 41 are connected via flexible joints 29a and 29a, respectively.

  As shown in FIG. 4, the one-way clutch 42 includes flat regulation claws 42 a arranged at equal intervals in the circumferential direction between the power transmission shaft 41 and an inner housing 43 that is coaxially arranged around the power transmission shaft 41. By the action, only the rotational force in one direction (A direction) of the power transmission shaft 41 is transmitted to the inner housing 43, and the rotation in the other direction (B direction) of the power transmission shaft 41 is not transmitted, and the structure rotates freely. It has become. The inner housing 43 rotates only in one direction (A direction) and does not rotate in the other direction (B direction) by the action of the one-way clutch 42.

  One end of the energy storage spring 31 is fixed to the outer surface of the inner housing 43, and the other end of the spring 31 extends spirally along the outer surface of the inner housing 43 and is fixed to the inner surface of the transmission housing 44. ing. The transmission housing 44 is positioned between the inner housing 43 and the outer housing 45 and is supported on the inner peripheral surface of the outer housing 45 via a bearing 46 so as to be relatively rotatable. The power transmission shaft 41 is supported between the inner peripheral surface of the transmission housing 44 and the side wall of the outer housing 45 via bearings 46 and 46 so as to be relatively rotatable.

  A torque limiter 47 is provided on the upstream side of the power transmission shaft 41 with respect to the one-way clutch 42, and rotational torque exceeding an allowable value is transmitted from the rotation shaft 25 side to the power transmission shaft 41. In this case, transmission from the rotary shaft 25 is blocked by a torque limiter 47. As a result, even if an excessive rotational torque acts on the rotary shaft 25 due to the leg force of the swimmer, the rotational torque is blocked by the torque limiter 47, and an excessive load is not applied to the kinetic energy storage unit 30 and the power transmission mechanism unit 40. This prevents the component parts from being damaged. In addition, by pulling the left and right wires 22 and 22 by the leg strength of the swimmer, a downward pulling force is also applied to the waist belt 71 of the swimming device fixing device 70 to which the rotary shaft rotating mechanism portions 20 and 20 are attached. The position of the waist belt 71 is held at a normal position by a suspension belt 72 (see FIG. 2) suspended from the shoulder 4.

  A speed increasing mechanism 60 (part surrounded by a dotted line 60 in FIG. 3) composed of a planetary gear mechanism is connected to the downstream side of the transmission housing 44. The speed increasing mechanism 60 increases the rotational speed in one direction (A direction) of the transmission housing 44 and transmits the increased rotational force to the screw propulsion mechanism 50. A rotatable planetary gear 62 is pivotally supported on the rotating plate 61 connected to the output shaft 44a. The planetary gear 62 is rotated in one direction (A direction) of the transmission housing 44, and the inner surface of the outer housing 45 is rotated. While meshing with the inner peripheral surface of the ring gear 63 fixed to the peripheral surface, revolving around the rotatable sun gear 64 positioned coaxially with the output shaft 44a of the transmission housing 44 in one direction (A direction) The sun gear 64 is rotated (spinned) in the same direction, and the output shaft 64a connected to the sun gear 64 is rotated at a speed increased in the same direction.

  An output shaft 64a connected to the sun gear 64 is rotatably supported on the other side wall of the outer housing 45 via a bearing 46. The output shaft 64a is disposed at the tip of the output shaft 64a at a right angle to the output shaft 64a. One bevel gear 65 that transmits rotation in one direction (A direction) is attached to the screw shaft 51 via a one-way clutch 66. The one-way clutch 66 transmits the rotation of the sun gear 64 in one direction (A direction) from the output shaft 64a to the bevel gear 65, while the rotation of the motor 55 described later from the output shaft 55a of the bevel gear 65 is transmitted. It is not transmitted to the upstream side. Instead of the one-way clutch, it is also possible to employ an electromagnetic clutch that receives a drive electric signal of a motor 55 described later and releases the connection between the output shaft 64a of the sun gear 64 and the bevel gear 65.

  The screw propulsion mechanism unit 50 rotates the screw 52 at the tip of the screw shaft 51 to obtain a propulsive force of the body, and the other bevel gear 67 that meshes with the bevel gear 65 is attached to the screw shaft 51. . Thereby, the rotational force in one direction (A direction) from the output shaft 44a of the transmission housing 44 is transmitted to the screw shaft 51 via the bevel gears 65 and 67, and the screw 52 is unidirectional (C in FIG. 3). Direction). The screw shaft 51 and the screw 52 are protected by a cylindrical protective cover (not shown).

  An output shaft 55 a of a motor 55 that is driven by a small battery 54 as a power source is connected to the rear end of the screw shaft 51 via a one-way clutch 53. As shown in FIG. 1, the motor 55 is housed in a motor case 56 (see FIGS. 1 and 2) together with a bevel gear 67 and a one-way clutch 53. The one-way clutch 53 transmits the rotation in one direction (C direction) from the output shaft 55a driven by the motor 55 to the screw shaft 51. On the other hand, when the motor 55 is not driven, the output shaft 64a of the sun gear 64 is driven. The bevel gear 67 is allowed to rotate in response to rotation in one direction (A direction) from the side bevel gear 65 and is transmitted to the screw shaft 51. That is, the two bevel gears 65 and 67 and the two one-way clutches 66 and 53 constitute a switching mechanism unit 80 that switches between power transmission from the motor 55 and power transmission from the power transmission mechanism unit 40. The small battery 54 is configured to switch power supply / stop by an ON / OFF switch (not shown) arranged at the center of the abdomen of the lumbar belt 71. 70 is attached to the back portion 72a of the suspension belt 72.

  Next, a method of mounting the swimming equipment 10 having the above configuration on the body 1 and propelling it in water will be described.

  In the water, when the posture shown in FIG. 5 (A) is bent to the posture in which both feet shown in FIG. 5 (B) are extended by the kicking action, the wire 22 is pulled and the unwinding unit 24 Unwinding and rotating the rotating shaft 25 in one direction (A direction). The rotation of the rotary shaft 25 in one direction (A direction) is performed by winding the energy storage spring 31 of the energy storage unit 30 via the one-way clutch 42 and the inner housing 43 to store power energy, and transmitting housing. 44 is rotated in one direction (A direction). Then, the rotation of the transmission housing 44 in one direction (A direction) is accelerated by the speed increasing mechanism 60 and then transmitted to the screw shaft 51 of the screw propulsion mechanism 50 via the bevel gears 65 and 67. The pair of screws 52, 52 located on both sides of the waist 2 of the body 1 are rotated to propel the body 1 forward.

  When the pulling of the wire 22 is finished and the rotation of the rotary shaft 25 in one direction (A direction) is stopped, the wound energy storage spring 31 is unwound and supplied with the accumulated motive energy. Thus, the transmission housing 44 is continuously rotated in the same direction (A direction), and after being accelerated by the speed increasing mechanism 60, the screw propulsion mechanism 50 is connected via the bevel gears 65 and 67 as described above. The screw shaft 51 is rotated, each screw 52 is continuously rotated in the same direction (C direction), and the body 1 is continuously propelled forward. In the case of the extended posture of both feet shown in FIG. 5 (B), the resistance of the body 1 to water is the least, and the body 1 can be smoothly and efficiently propelled.

  When the energy storage spring 31 has been unwound and the accumulated power energy has been supplied, the kicking action again causes the legs of FIG. 5 (B) to extend from the bent posture of FIG. 5 (A). Transition to the posture, the rotation shaft 23 is rotated again in one direction (A direction), and the rotation is transmitted to the downstream side of the transmission housing 44 while the energy storage spring 31 is wound. 52 and 52 are rotated in one direction (C direction), and the body 1 is continuously pushed forward. In addition, when shifting from the extended posture of both feet in FIG. 5 (B) to the bent posture of both feet in FIG. 5 (A), the wire 22 is wound by the return force of the winding spring 28 of the rewinding unit 25. It is rewound into the return unit 25.

  As described above, after pulling the wire 22, the screw 52, 52 is rotated while the energy storage spring 31 is wound to store the motive energy while the wire 22 is pulled by an extension operation from the bent posture of both feet. Takes out the motive energy stored in the energy storage spring 31 and continuously rotates the screws 52, 52, thereby smoothly propelling the body 1 and underwater activity (holding the camera by hand). Can be used for various operations such as underwater photography, transportation of goods underwater, and lifesaving.

  When switching the power for rotating the screw 52 to the motor 55 side, it is only necessary to turn on the switch of the battery 54, and the output shaft 55a of the motor 55 rotates in one direction (C direction) by the electric power from the battery 54. Thus, the rotation can be transmitted to the screw shaft 51 via the one-way clutch 53, and the body 52 can be propelled by rotating the screw 52 in the same direction (C direction). The bevel gear 65 is rotated in one direction (A direction) by rotation of the output shaft 55a of the motor 55 in one direction (C direction), but the output shaft 64a of the bevel gear 65 and the sun gear 64 is The rotation of the bevel gear 65 is not transmitted to the output shaft 64a side of the sun gear 64 by the action of the one-way clutch 66 interposed between the two.

  The screwed swimming device according to the present invention can be widely used as a swimming device used for assisting underwater activities performed in rivers, the sea, etc., underwater goods transportation work, underwater work such as lifesaving, etc. is there.

It is a figure which shows the state which looked at the condition which mounts | wears with the swimming gear with a screw of this invention, and propels water underwater. It is a figure which shows the state which looked at the situation shown in FIG. 1 from the front. It is a figure which shows the structure of the power mechanism of the swimming gear with a screw shown in FIG. FIG. 4 is a cross-sectional view taken along line XX in FIG. 3. FIG. 4A shows a kicking action in water, FIG. 4A is a diagram showing a posture in which both feet are bent, and FIG. 4B is a diagram showing a posture in which both feet are extended.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Body 2 Lumbar part 3 Leg part 3a Ankle 4 Shoulder part 10 Swimsuit with screw 20 Rotating shaft rotating mechanism part 20a Rotating shaft holding part 21 Band 22 Wire 22a One end of wire 23 Unwinding unit 24 Unwinding unit (Wire unwinding mechanism part) )
25 Rotating shaft 26, 27a, 27b Pulley 28 Spring spring for rewinding wire 29 Power transmission wire 29a Flexible joint 30 Energy storage section 31 Spring spring for energy storage 40 Power transmission mechanism section 41 Power transmission shaft 42, 53, 66 One-way clutch 42a Restriction Claw 43 Inner housing 44 Transmission housing 44a, 55a, 64a Output shaft 45 Outer housing 46 Bearing 47 Torque limiter 50 Screw propulsion mechanism 51 Screw shaft 52 Screw 54 Small battery 55 Motor 56 Motor case 60 Speed increasing mechanism 61 Rotating plate 62 Planet Gear 63 Ring gear 64 Sun gear 65, 67 Bevel gear 70 Swim fixture 71 Lumbar belt 72 Suspension belt 72a Back 80 Switching mechanism , C unidirectional B other direction

Claims (6)

A swimming device worn on the body,
One end of the wire is locked before the ankle, and the rotating shaft rotating mechanism unit that rotates the rotating shaft in one direction by the pulling force of the wire by the simultaneous bending and stretching motion of both feet or the left and right alternately stepping foot motion,
An energy storage unit that accumulates power energy by rotation in one direction of the rotating shaft;
A screw propulsion mechanism that rotates a screw disposed near the waist of the body by power energy supplied from the energy storage unit, and obtains a propulsion force of the body by rotation of the screw;
Comprising a wire rewinding mechanism for rewinding the wire stretched by tension ;
Each of the said rotating shaft rotation mechanism part, an energy storage part, a screw propulsion mechanism part, and a wire rewinding mechanism part is attached to the waist belt with which the waist part of a body is mounted | worn, The swimming equipment with a screw characterized by the above-mentioned.   The energy storage unit is configured to wind power springs by rotating the rotating shaft in one direction to accumulate power energy, and the accumulated power energy is extracted by the return force of the spring springs. The swim implement with a screw according to claim 1.   3. The screwed swimming device according to claim 2, wherein a torque limiter is provided on the upstream side of the mainspring. A part of the rotational force in one direction of the rotational shaft is stored in an energy storage unit as motive energy, and at the same time, the remainder of the rotational force is transmitted to the screw side to rotate the screw. The swim implement with a screw according to any one of claims 1 to 3 . The screw according to any one of claims 1 to 4, wherein the rotation shaft rotation mechanism portion on the other end side of the wire is disposed in the vicinity of the abdomen side center of the waist belt. With swimming equipment. The motor further comprising: a motor that rotates the screw by electric power supplied from a battery; and a switching mechanism that switches between power transmission from the motor and power transmission from the power transmission mechanism. The swimming device with a screw according to any one of claims 1 to 5 .

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