JP2020010875A - Exercise tool for underwater - Google Patents

Abstract

To provide an exercise tool for underwater capable of imposing a heavy load in which the width of a change in a load amount is large.SOLUTION: An exercise tool 100 for underwater includes a water wheel that rotates underwater. The water wheel 20 includes a bearing 122a fixed to the water bottom, a rotation shaft rotatably supported by the bearing 122a, spokes 22 that extend radially from the rotation shaft, and blades 23 supported by the spokes 22. The blades 23 are provided so as to rotate around the spokes 22.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an underwater exercise device that applies a load to a user by rotating a water wheel underwater, and more particularly to an underwater exercise device configured to variably apply a load to a water wheel.

  2. Description of the Related Art Conventionally, various underwater exercise tools for training a body using a resistance of water generated when a water wheel is rotated as a load have been proposed (see Patent Documents 1 and 3).

  For example, Patent Literature 1 and Patent Literature 2 propose exercise equipment configured to rotate a waterwheel by pedaling a pair of left and right pedals with a foot like a bicycle.

  However, with these exercise equipment, there is a problem that the load on the turbine is too large for a person with weak power and the load on the turbine is too small for a person with strong power.

  Therefore, in Patent Document 3, a plate-shaped load member extending laterally from the bottom surface of the pedal is provided so as to make the pedal itself a blade of the water wheel, and the load applied to the user is adjusted according to the amount of extension of the load member. There has been proposed an underwater exercise device configured to do so.

Design Registration No. 1377174 Japanese Patent No. 14019919 JP 2009-56234 A

However, in the underwater exercise equipment disclosed in Patent Document 3, since a load member is provided on only two pedals, there is a problem that a large load cannot be obtained and a problem that a range in which the load amount can be changed is small. .
The present invention has been made in view of the above problems, and an object of the present invention is to provide an underwater exercise device that can apply a large load and has a wide variation range of the load amount.

  The invention made in order to solve the above-mentioned problem is an underwater exercise device provided with a water wheel that rotates in water, wherein the water wheel is rotatably supported by a bearing fixed to a water bottom and the bearing. A rotating shaft, spokes extending radially from the rotating shaft, and a blade plate supported by the spokes, wherein the blade plate is rotatably provided around the spoke. .

In this manner, by rotating the blade around the spokes, it is possible to adjust the magnitude of the resistance of the water received by the blade.
Here, “fixed to the bottom of the water” is not limited to the case of being fixed directly to the bottom of the water, but may be any one that can be fixed so as to be relatively immovable with respect to the bottom of the water. It shall include the case of being fixed.

It is preferable that the blade plate has a large number of through holes penetrating in the thickness direction distributed over the entire surface.
This allows the water flow to pass through the blade plate, so that the blade plate can be rotated stably.

  The underwater exercise device according to the present invention preferably includes a pair of left and right pedals for rotating the rotation shaft and a saddle on which a user sits, and the rotation shaft is preferably provided immediately below the saddle. By doing so, the installation space for the underwater exercise equipment can be saved.

  The underwater exercise device according to the present invention preferably includes a pair of left and right pedals for rotating the rotation shaft and a saddle on which a user sits, and the rotation shaft is preferably provided in front of the saddle. By doing so, the underwater exercise equipment can be installed at a shallow place.

  It is preferable that the underwater exercise device according to the present invention has a pair of left and right pedals for rotating the rotating shaft, and the rotating shaft is preferably rotated by the pedal via a chain. This eliminates the need to pinch the water wheel between the pair of left and right pedals, so that a water wheel having a wide impeller can be provided.

  As described above, according to the underwater exercise device of the present invention, the load amount can be varied widely from a large load to a small load in accordance with the physical strength of the user.

BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view of the underwater exercise equipment which concerns on 1st Embodiment of this invention. It is a top view of the underwater exercise tool shown in FIG. FIG. 2 is a side view showing a state where the underwater exercise equipment shown in FIG. 1 is installed on a water bottom. FIG. 2A is a plan view and FIG. 2B is a front view showing the blade of FIG. 1. FIG. 2A is a plan view and a front view showing the blade plate stopper of FIG. 1. FIG. 2 is a cross-sectional view of the periphery of the blade of FIG. 1 taken along a plane passing through a spoke axis and perpendicular to a thickness direction of the blade. It is a perspective view of the underwater exercise equipment which concerns on 2nd Embodiment of this invention. It is a top view of the underwater exercise tool shown in FIG. It is a side view which shows the state which installed the underwater exercise tool shown in FIG. 7 in the water bottom. 8A is a plan view and FIG. 8B is a front view showing the blade of FIG. 7. It is a top view of the underwater exercise equipment which concerns on 3rd Embodiment of this invention. FIG. 2 is a side view showing a state where the underwater exercise equipment shown in FIG. 1 is installed on a water bottom.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings as appropriate. However, the present invention is not limited to the following embodiments.
(1st Embodiment)
1 to 3 show an underwater exercise device 100 according to a first embodiment of the present invention. The underwater exercise device 100 mainly includes a frame 10, a water wheel 20, and a seat 30.

  The frame 10 is mainly made of a metal such as stainless steel, and includes a pair of front and rear bases 11, 11, a frame body 12, and a saddle support 13.

  The pair of front and rear bases 11 and 11 are formed of rectangular pipes having a rectangular cross section, and are provided in parallel to the left-right direction (vertical direction in FIG. 2) as shown in FIG. The base 11 is closed at both ends by a cap 11a made of resin.

  The frame main body 12 has a pair of left and right arch portions 121, 121 and a pair of left and right cross rails 122, 122. The arch portions 121, 121 and the horizontal rail 122 are both formed of the same square pipe as the base portion 11.

  The arch portion 121 has an inverted U-shape including a pair of front and rear legs 121a, 121a extending linearly in a vertical direction and an arc portion 121b connecting upper ends of the pair of legs 121a, 121a. The frame body 12 is fixed to the bases 11, 11 with bolts so as to bridge the center of the pair of front and rear bases 11, 11 in the left-right direction (vertical direction in FIG. 2).

  The horizontal rail 122 has a horizontal straight line shape and is provided so as to connect the upper ends of the pair of front and rear legs 121a, 121a. A bearing 122a (see FIG. 2) that supports the water turbine 20 is provided at a central portion of the horizontal rail 122 in the front-rear direction (the left-right direction in FIG. 3).

  The saddle support portion 13 includes a saddle support bar 131 connecting between the tops of the pair of left and right arch portions 121, a saddle support tube 133 vertically provided from the center of the saddle support bar 131 in the left and right direction, and a saddle elevating / fixing. And a clamp lever 132.

  The water turbine 20 includes a rotating shaft 21 rotatably and substantially horizontally supported by a bearing 122a, and a plurality (six in the illustrated example) extending radially from the rotating shaft 21 and perpendicular to the rotating shaft 21. (See FIG. 6), a plurality of blade plates 23, 23,... Respectively supported by the spokes 22, a resin sleeve 25 mounted around the base end of the spokes 22, and a vine. A spring 24 and a blade plate stopper 26 for preventing the blade plate 23 from falling off and assisting the rotation operation of the blade plate 23 are provided.

  As shown in FIG. 2, the rotating shaft 21 is formed of a round bar, and has a cylindrical hub 21a for connecting the spokes 22 in the center thereof. The spokes 22 are made of a circular pipe material, and are fixed to the hub 21a by fitting the base end side into fitting holes (not shown) provided at equal angular intervals on the outer peripheral surface of the hub 21a. A pedal 28 is provided at both ends of the rotating shaft 21 via a crank 27.

  As shown in FIG. 4, the blade plate 23 is provided in a substantially rectangular flat plate shape, and has a cylindrical spoke insertion portion 23 a provided so as to extend in the longitudinal direction at the center in the width direction, and extends in the width direction from the spoke insertion portion 23 a. The protruding flat blade portions 23b, 23b, the flange portion 23c provided on the distal end side (upper side in FIG. 4) of the spoke insertion portion 23a, and the cylindrical shape fitted and bonded to the base end side inner surface of the spoke insertion portion 23a. A number of circular through holes 23d penetrating in the thickness direction are arranged in the blade portion 23b along the longitudinal direction. The blade plate 23 can be formed of an appropriate material such as resin, metal, and wood.

  As shown in FIG. 6, the spoke 22 has a helical spring 24, a resin sleeve 25, and a blade plate 23 inserted in this order from the proximal end side, and a trunk portion 26 a of a blade plate stopper 26 is inserted into a distal end thereof. The lower surface 26c of the head 26b is fixed so as to contact the upper surface 23h of the flange portion 23c.

  As shown in FIG. 5, the blade plate stopper 26 includes a cylindrical body portion 26a and a disk-shaped head portion 26b at an upper end thereof, and is urged downward from a lower surface 26c of the head portion 26b by an urging spring. And a ball plunger 261 for allowing the engaged ball 261a to come and go. In the center of the flange portion 23c of the blade plate 23, a through hole 23g for inserting the trunk portion 26a of the blade plate stopper 26 is provided, and on the upper surface 23h of the flange portion 23c, as shown in FIG. Four locking holes 23f for locking the engaging balls 261a of the ball plunger 261 are provided at intervals of 30 degrees in the circumferential direction. A pin insertion hole 26d penetrating in a direction perpendicular to the axis is provided in the body portion 26a of the blade plate stopper 26. The blade plate stopper 26 has a through hole (not shown) provided in the spoke 22 and a pin insertion hole 26d. By inserting the retaining pin 262 into the spoke 22, it is possible to prevent the spoke 22 from coming off, and to fix the blade plate 23.

  As shown in FIG. 3, the seating portion 30 includes a saddle 31 on which a user sits, and a saddle support column 32 extending downward from a lower surface of the saddle 31. The saddle support column 32 is inserted through the saddle support tube 133 and is fixed by the clamp lever 132. The saddle 31 is provided immediately above the rotary shaft 21 of the water wheel 20, as shown in FIG.

  When using the underwater exercise tool 100, for example, as shown in FIG. 3, the base 11 is brought into contact with the water bottom B of the pool so that at least the head of the user sitting on the saddle 31 comes out above the water surface H. And the whole water turbine 20 is submerged. Since the waterwheel 20 is provided directly under the saddle 31, the underwater exercise device 100 can save an occupied area.

When the user wants to increase or decrease the load by the water wheel 20, the blade 23 is turned around the spoke 22. When the blade plate 23 is rotated, the engaging ball 261a of the ball plunger 261 provided on the blade plate stopper 26 is pressed against the biasing force of the built-in biasing spring of the ball plunger 261 and the helical spring 24 so that the flange portion is formed. It rides on the upper surface 23h of 23c, and moves from the locking hole 23f that has been locked to that to another locking hole 23f.
When it is desired to increase the resistance of the water wheel 20, as shown in FIG. 1, the blade 23 is rotated so as to be perpendicular to the rotation direction of the water wheel 20, and when it is desired to reduce the resistance of the water wheel 20, FIGS. As shown in FIG. 3, the blade plate 23 is rotated so as to be parallel to the rotation direction of the water wheel 20.

(2nd Embodiment)
7 to 9 show an underwater exercise device 200 according to a second embodiment of the present invention. The underwater exercise device 200 mainly includes a frame 210, a water wheel 220, and a seat 230, and further includes a protective fence 240 for storing the water wheel 220 and a handle 250.
In the second and subsequent embodiments, members common to the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

  The frame 210 is mainly made of metal such as stainless steel, and includes a pair of front and rear bases 211 and 211, a frame body 212, and a water wheel support 213.

  The pair of front and rear bases 211 and 211 are formed of square pipes having a square cross section, and are provided in parallel in the left-right direction (the left-right direction in FIG. 8) as shown in FIG. Both ends of the base 211 are closed by caps 211a made of resin. Further, on the rear surface of the rear base 211, a pair of left and right casters 260, 260 used for moving the underwater exercise equipment 200 are provided. Note that reference numeral 270 in FIG. 9 is a zinc plate for anticorrosion.

  As shown in FIG. 9, the frame main body 212 is formed of a circular pipe whose front end is curved and formed in a mountain shape with a gentler inclination than the rear end. The front end of the frame body 212 is fixed to the rear surface of the front base 211 via the lid plate 212a and the reinforcing plate 214 so that the centers of the front and rear bases 211 and 211 are connected to each other. It is screw-fixed to the upper surface of the rear base 211 via a plate 212b and a reinforcing plate 214.

  The water wheel support portion 213 has a pair of right and left columns 213a, 213a formed of rectangular pipes having a rectangular cross section. The columns 213a are suspended from the upper surface of the front base 211, and bearings 221a are provided near the upper ends, respectively. The bearing 221a supports the water wheel 220.

  The blade plate 223 of the water wheel 220 is formed of resin, and as shown in FIG. 10, the blade portion 223b is provided wider than the blade portion 23b of the blade plate 23 according to the first embodiment, and a circular through hole 23d is provided. Except that many are provided, it has the same configuration as the blade plate 23 of the first embodiment.

  As shown in FIG. 7, the protection fence 240 that houses the water wheel 220 connects a pair of left and right end-shaped circular frames 241 and 241, a plurality of protection bars 242 and 242, and the left and right circular frames 241 and 241. And a pair of front and rear U-shaped frames 243 and 243 for connecting the circular frame 241 to the column 213a, and fixed to the column 213a of the water wheel support 213 through both ends of the circular frames 241 and 241 and both ends of the U-shaped frames 243 and 243. Have been. In FIG. 9, the U-shaped frames 243 and 243 are omitted.

  As shown in FIG. 9, the seating section 230 has a saddle 231, a saddle height adjustment section 232, a saddle front / rear adjustment section 233, and a backrest section 234.

  The saddle height adjusting portion 232 is formed in a lattice shape by bridging strip-shaped support plates 232b, 232b (shown by broken lines in FIG. 8) between a pair of left and right side plates 232a, 232a bent into an inverted letter. , Is fixed to the lower surface thereof to support the saddle 231. The saddle height adjusting section 232 includes two locking bars 232c, 232c in a portion inclined upward and rearward (rightward in FIGS. 8 and 9) of the side plates 232a, 232a. The locking bars 232c, 232c are provided stepwise and in parallel, between which the backrest 234 is inserted. Further, an L-shaped handle 250 is protruded from the outer surfaces of the side plates 232a, 232a.

  The saddle front-rear adjustment unit 233 includes a slide pipe 233a, a support pipe 233b, and a clamp screw 233c. The support pipe 233b is formed of a square pipe having open front and rear ends, and is fixed to the upper surface of the top of the frame body 212 so as to extend substantially horizontally and in the front and rear direction. The sliding pipe 233a is a square pipe one diameter smaller than the supporting pipe 233b, slides inside the supporting pipe 233b, and is fixed to the lower surface of the saddle height adjusting section 232 to support the sliding pipe 233a. The saddle 231 adjusts the position in the front-rear direction by loosening the clamp screw 233c and sliding the sliding pipe 233a with respect to the supporting pipe 233b.

  The backrest portion 234 is formed in a substantially rectangular shape from a substantially inverted U-shaped outer frame 234a formed of a circular pipe, a plurality of bars 234b provided inside thereof, and a support plate 234c connecting both ends of the outer frame 234a. It is fixed to the rear end of the sliding pipe 233a in a state inclined backward.

  The two retaining bars 232 c and 232 c of the saddle height adjusting section 232 support the saddle 231 by holding the backrest 234 by the moment due to the weight applied to the saddle 231. When the saddle 231 is lifted, this moment is released, and the height of the saddle 231 can be adjusted.

  In the present embodiment, the water wheel 220 is provided in front of the saddle 231, and the saddle 231 can be lowered, so that the water wheel 220 can be installed in a place where the water depth is shallow.

(Third embodiment)
11 and 12 show an underwater exercise device 300 according to a third embodiment of the present invention. The underwater exercise device 300 mainly includes a frame 310, a water wheel 320, a seating portion 230, a chain portion 380, a protection fence 240 for storing the water wheel 320, and a handle 350.

  The frame 310 is mainly made of metal such as stainless steel, and includes a pair of front and rear bases 211 and 211, a frame main body 312, a water wheel support 313, and a handle support 314 as shown in FIG. I have.

  As shown in FIG. 12, the frame main body 312 is formed of a circular pipe whose front end side is curved and formed into a mountain shape that is steeper than the rear end side. The frame body 312 has a front end fixed to the upper surface of the front base 211 via the cover plate 212a and the reinforcing plate 214 so that the centers of the front and rear bases 211 and 211 are connected to each other. It is screw-fixed to the upper surface of the rear base 211 via a plate 212b and a reinforcing plate 214.

  As shown in FIG. 11, the water wheel supporting portion 313 extends from the middle height position of the inclined portion on the rear side of the frame main body 312 to the left and right, and then extends from the substantially J-shaped supporting columns 313a and 313a extending diagonally rearward. Become. Bearings 313b, 313b that support the water wheel 320 are provided at the tips of the support columns 313a, 313a.

  As shown in FIG. 12, the handle support portion 314 is formed of a substantially J-shaped circular pipe that extends forward from the upper end of the front inclined portion of the frame body 312 and then extends upward. At an upper end of the handle support portion 314, a clamp lever 315 for lifting and lowering and fixing the handle 350 is provided. The handle 350 includes a grip portion 350a extending in the left-right direction and a U-shaped operation portion 350b extending obliquely upward and forward.

  As shown in FIG. 11, the water wheel 320 includes a rotating shaft 21 supported by a bearing 313b, a plurality of (six in the example of FIG. 12) spokes 22, 22,. , A helical spring 24 wrapped around the base end of the spoke 22, and a slat stop 26 for preventing the slat 323 from falling off and for rotating the slat 323. It has.

  The blade plate 323 has a substantially home-base pentagonal plate shape, a cylindrical spoke insertion portion 23a, flat blade portions 323b and 323b extending in the width direction from the spoke insertion portion 23a, and a spoke insertion portion. The blade portion 323b includes a flange portion 23c provided on the distal end side of the flange 23a and a resin collar 23e fitted and bonded to the inner surface on the base end side of the spoke insertion portion 23a. The circular through holes 23d are arranged in the width direction and the longitudinal direction. The blade portion 323b has a pentagonal shape in which the corners on the rotation axis side and far from the spokes are cut out in a triangle so that adjacent blade plates 323 do not interfere with each other when the thickness direction is perpendicular to the rotation direction of the water wheel 320. Is formed.

The chain portion 380 includes a front gear 382 provided at the base end of the crank 27, a rear gear 383 mounted on the rotating shaft 21 of the water wheel 320, and a rotational movement of the pedal 28 from the front gear 382 to the rear gear 383. And a tension roller 384 that adjusts the slack of the chain 381. When the user steps on the pedal 28 with his / her feet, the water wheel 320 rotates via the chain portion 380.
By providing the chain portion 380 in this manner, the underwater exercise equipment 300 moves the water wheel 320 not to between the pair of left and right pedals 28, but to another place (in the present embodiment, behind the pedals 28, 28). Since it can be provided, the size of the blade plate 323 can be increased.

  As described above, the underwater exercise device of the present invention is not limited to the above embodiment. For example, the saddle and the pedal may be omitted, and the water wheel may not be rotated by foot, but may be rotated by hand. . The blade plate may omit a through hole penetrating in the thickness direction, and the rotation axis of the water wheel may be vertical instead of horizontal, or may be inclined with respect to the horizontal direction.

Underwater exercise equipment 100, 200, 300
Water turbines 20, 220, 320
Bearings 122a, 221a, 313b
Rotating shaft 21
Spoke 22
Blades 23, 223, 323
Through hole 23d
Pedal 28
Saddle 31
Chain 381

The invention made in order to solve the above-mentioned problem is an underwater exercise device provided with a water wheel that rotates in water, wherein the water wheel is rotatably supported by a bearing fixed to a water bottom and the bearing. A rotating shaft, spokes extending radially from the rotating shaft, and a blade plate supported by the spokes, wherein the blade plate has a large number of through-holes penetrating in a thickness direction distributed over the entire surface. and said that you are.

This allows the water flow to pass through the blade plate, so that the blade plate can be rotated stably.
Here, “fixed to the bottom of the water” is not limited to the case of being fixed directly to the bottom of the water, but may be any one that can be fixed so as to be relatively immovable with respect to the bottom of the water. It shall include the case of being fixed.

It is preferable that the blade plate is provided rotatably around the spoke .
In this manner, by rotating the blade around the spokes, it is possible to adjust the magnitude of the resistance of the water received by the blade.

As described above, according to the underwater exercise device of the present invention, the blade plate can be rotated stably .

Claims (5)

An underwater exercise device with a water wheel that rotates in the water,
The water turbine has a bearing fixed to the water bottom,
A rotating shaft rotatably supported by the bearing,
Spokes extending radially from the rotation axis, and a slat supported by the spokes,
The underwater exercise device, wherein the blade plate is rotatably provided around the spoke.   The underwater exercise device according to claim 1, wherein the blade plate has a large number of through holes penetrating in a thickness direction distributed over the entire surface. A pair of left and right pedals for rotating the rotating shaft, and a saddle on which a user sits,
The underwater exercise device according to claim 1, wherein the rotating shaft is provided immediately below the saddle. A pair of left and right pedals for rotating the rotating shaft, and a saddle on which a user sits,
The underwater exercise device according to claim 1, wherein the rotation shaft is provided in front of the saddle. It has a pair of left and right pedals for rotating the rotation shaft,
The underwater exercise device according to claim 1, wherein the rotating shaft is rotated by the pedal via a chain.

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