JP2002038742A - Pool movable floor unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pool movable floor unit capable of being easily laid on the existing pool and an optional postion of the bottom of the pool to freely make layout of a shallow part and a deep part. SOLUTION: The pool movable floor unit 1 is so constituted that a movable floor laid on the bottom is capable of being moved up and down without renovating the existing pool as an independent type, e.g. the basic end of one (first nodal member 3A) is pivoted on an anchor frame 2 laid on the bottom of the pool at a pivot section 3a, the front end of the first nodal member 3A is pivoted together with the basic end of the other (second nodal member 3B), and the pool movable floor unit includes a link mechanism 3 having a joint section 3b for connecting the movable floor 1A fixed or adjoined by laying the movable floor 1A on the front end of the second nodal member 3B and a rising and falling mechanism (air spring 4) provided between the front end of the first nodal member 3A of the link mechanism 3 and the basic end of the second nodal member 3B and contracting the link mechanism 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention can be easily applied to an existing pool, and can be arranged at any place on the bottom surface of the pool, and a shallow part and a deep part can be arbitrarily laid out. The present invention relates to a pool movable floor unit that can be used.

[0002]

2. Description of the Related Art In a pool, if the height and depth of a swimmer are not appropriate, for example, an accident may occur in which a person of short height drowns or, for example, a person of high height jumps and collides with the bottom of the pool. . In order to prevent such an accident, for example, one pool is divided into a shallow place and a deep place (that is, the water depth is kept as it is), and a floor plate having legs of a predetermined height is provided in the shallow place. To make the water shallower.

[0003] As described above, sinking the floorboard into the bottom of the pool is entirely performed manually, and it takes time and labor.
As disclosed in Japanese Unexamined Patent Application Publication No. 9-96117 and Japanese Patent Application Laid-Open No. 9-96117, a movable floor device capable of changing the water depth of the pool without human power is installed in the pool.

[0004] A movable floor apparatus described in Japanese Patent Application Laid-Open No. 8-28074 discloses a vertical floor provided in a pool side wall surface, a vertical apparatus provided in each vertical groove, and a movable floor provided by each vertical apparatus. It consists of a suspended body that is suspended and raised, and a protruding arm that is held by the suspended body, protrudes into a vertical groove, and is fixed to a movable floor that can move in the horizontal direction. By adjusting the water depth, the movable floor is stably supported at the target water depth.

[0005] The movable floor lifting device described in Japanese Patent Application Laid-Open No. 9-96117 discloses a bracket fixed to the pool inner wall side of the movable floor, a frame connected to the bracket, a nut fixed to the frame. A screw shaft screwed to the nut and arranged vertically along the pool inner wall, a handle for rotating the screw shaft, an anchor frame rotatably supporting the screw shaft and fixed to the floor; It can be installed easily and inexpensively in an existing pool, and the depth of water can be set easily and accurately.

[0006]

However, the movable floor elevating device described in Japanese Patent Application Laid-Open No. 8-28074 needs to provide a groove in the wall surface of the pool, and is used only by installing the existing pool. There is a problem that can not be.

Further, in the movable floor lifting device described in Japanese Patent Application Laid-Open No. 8-28074, the places where the lifting device and the suspended body are located are limited. There is a problem in that only the movable floor where these members are located can be raised or lowered, and the layout cannot be arbitrarily laid out in shallow and deep portions of the pool.

On the other hand, the movable floor elevating device described in Japanese Patent Application Laid-Open No. 9-96117 can raise and lower the movable floor only by disposing a screw shaft or the like along the inner wall surface of the pool. Although the movable floor can be relatively freely arranged as compared with that described in Japanese Patent Application Publication No. -28074, there is a problem that a slight restriction is added in that it is necessary to secure a floor for arranging the bracket.

The movable floor elevating device described in Japanese Patent Application Laid-Open No. 9-96117 is covered with a cover in the center on the inner wall surface of the pool, but protrudes by the screw axis. In addition, there is a problem that safety is reduced, and there is a problem of lack of safety.Furthermore, since members protrude on the inner wall surface of the pool and brackets need to be arranged on the floor, Similarly, there is a problem that the layout is limited.

The present invention solves the above-mentioned problem, and can be easily applied to an existing pool, and can be arranged at an arbitrary position on the bottom surface of the pool. It is an object of the present invention to provide a pool movable floor unit that can be laid out in a room.

[0011]

SUMMARY OF THE INVENTION In order to achieve the above object, a movable floor unit for a pool according to the present invention is free standing without modifying an existing pool in order to provide a shallow portion with respect to the water depth of the existing pool. The movable floor arranged on the bottom of the pool is vertically movable by a mold.
By doing so, it can be easily applied to an existing pool, can be arranged at an arbitrary position on the bottom surface in the pool, and a shallow portion and a deep portion can be arbitrarily laid out.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION The movable floor unit of the present invention is a free-standing movable floor unit which is provided on the bottom surface of the existing pool without modifying the existing pool in order to provide a shallow portion with respect to the water depth of the existing pool. Are configured to be movable up and down.

According to the above configuration, the self-standing type means that the existing pool only needs to be placed on the bottom of the pool without modification. Therefore, the movable floor for changing the water depth of the pool can be arranged anywhere and in any layout over the entire bottom surface of the pool.

At this time, it is conceivable that, for example, the arrangement may cause the movement, but it is not too heavy for carrying, and the weight may be such that it does not move when arranged on the bottom of the pool. .

By doing so, it can be easily applied to an existing pool, can be arranged at an arbitrary position on the bottom surface of the pool, and a shallow portion and a deep portion can be arbitrarily laid out. It becomes possible.

Further, according to the present invention, in order to provide a shallow portion with respect to the water depth of an existing pool, a movable floor is arranged on the bottom of the pool, and the movable floor unit for raising and lowering the movable floor is arranged on the bottom of the pool. An anchor frame and one base end of the anchor frame are pivotally supported,
A link mechanism having one connecting end pivotally supported with the other base end and having a connecting portion for arranging and fixing a movable floor at the other end or connecting an adjacent movable floor; Is provided between one distal end and the other proximal end of the
An elevating mechanism for expanding and contracting the link mechanism.

According to the above arrangement, the pool movable floor unit of the present invention has the anchor frame disposed on the bottom of the pool.
After the movable floor is arranged and fixed by the connecting portion formed at the distal end of the link mechanism, the height of the distal end of the link mechanism is changed by driving the elevating mechanism to expand and contract the link mechanism. Is raised and lowered. By doing this,
The water depth of the pool can be reduced.

Further, since the movable floor unit of the present invention raises and lowers the movable floor from the lower surface thereof, there is no need to make any changes to the pool itself, so that it can be used in an existing pool. In addition, since it is only necessary to dispose it on the bottom of the pool, a shallow portion can be freely laid out.

Further, the movable floor unit of the pool according to the present invention comprises:
In the above configuration, the lifting mechanism is an air spring. In this way, by using an air spring for the lifting mechanism,
When the movable floor rises, air is sent in and buoyancy is obtained as a whole, so it is possible to raise the movable floor easily and reliably, and when the movable floor descends, the air is exhausted and the movable floor is lifted by its own weight. Since it descends, it can be operated easily and reliably in this case as well.

Further, the movable floor unit of the pool of the present invention comprises:
In the above configuration, an intermediate node member whose base end is pivotally supported is provided at a pivot between one end of the link mechanism and the other proximal end, and the distal end of the intermediate node and the other distal end are provided. Parts, and between one of the distal ends and the proximal end of the intermediate node member, respectively. By doing so, it becomes possible to provide a shallow portion of the pool stepwise, and fine adjustment is facilitated.

Further, the movable floor unit of the pool of the present invention comprises:
In order to create a shallow part of the existing pool water depth,
In a movable floor unit for moving a movable floor up and down by arranging a movable floor on the bottom of the pool, an anchor frame disposed on the bottom of the pool, a cylinder device horizontally disposed on the bottom of the pool on the anchor frame, It has a wire provided at the rod end of the device and a buoyancy movable floor provided at the end of the wire.

According to the above construction, the pool movable floor unit of the present invention has the anchor frame disposed on the bottom of the pool.
By moving the rod end of the cylinder device forward and backward and pulling the wire, the buoyancy movable floor is lowered by loosening the wire, and the buoyancy movable floor is raised by buoyancy by loosening the wire. By doing so, the water depth of the pool can be made shallow, and since it is only necessary to dispose it on the bottom of the pool, the shallow portion can be freely laid out.

Further, the pool movable floor unit of the present invention comprises:
In any of the above-described configurations, the anchor frame is fixed to the pool bottom surface with a suction cup. With this configuration, the entire pool movable floor unit can be reliably arranged on the bottom surface of the pool without easily moving.

Further, the movable floor unit of the pool of the present invention comprises:
In any one of the above-described configurations, when the anchor frame is disposed between the opposing surfaces of the pool inner wall surface, a pressing portion that presses toward each of the opposing surfaces of the pool inner wall surface is provided at both ends of the anchor frame. is there. By doing so, reliable and stable fixing becomes possible.

[0025]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a movable floor unit (hereinafter, referred to as a movable floor unit) of a pool according to the present invention will be described with reference to the drawings. FIGS. 1 to 11 show the configuration of the movable floor unit of the present invention, FIGS. 1 to 3 show a state where the movable floor unit is arranged in the short side direction of the pool, and FIGS. 7 shows a single movable floor unit, FIG. 8 shows a suction cup in an anchor frame, and FIG. 9 shows a pressing portion in an anchor frame. FIG. 10 shows a configuration of a modification of the present invention and an operation state thereof. FIG. 11 shows still another modification of the present invention.

Reference numeral 1 denotes a movable floor unit according to the present invention in which a movable floor 1A is disposed on the bottom surface of the pool P so as to provide a shallow portion with respect to the water depth of the existing pool, and the movable floor 1A is raised and lowered. It is configured as follows.

Reference numeral 2 denotes an anchor frame disposed on the bottom surface of the pool P. The anchor frame 2 has a predetermined length for each movable floor unit as shown in FIG. 9, and as shown in FIGS. 1 and 4. When a plurality of movable floor units are installed, for example, when the movable floor units are installed on the entire long side or short side of the pool, the butted ends of the adjacent anchor frames 2, 2 are connected by bolts 2a and nuts 2b. 2A
Can be connected.

Further, as shown in FIGS. 1 and 4, when the anchor frame 2 is installed over the entire long side or short side of the pool P, that is, when it is arranged between opposing surfaces of the pool inner wall surface, as shown in FIG. As shown in (1), a pressing portion 2B is provided at a position where the above-described connecting member 2A is provided at an end portion facing the inner wall surfaces of the anchor frames 2 and 2 located at both ends.

The pressing portion 2B is inserted into a hole through which the bolt 2a is inserted, and includes a screw shaft 2d having a pad 2c fixed at the tip thereof, and a nut 2e fixed at the same position as the hole of the anchor frame 2. . The pressing portion 2B is a pad
To rotate the screw shaft 2d forward and backward with respect to the nut 2e (anchor frame 2).
A pressing force is applied to the inner wall surface of the pool P from the length direction to firmly fix the anchor frame 2.

As shown in FIG. 8, the anchor frame 2 is provided with a suction cup 2C supported by a support member 2f on a side end face thereof.
So that it is fixed to the bottom. Movable floor unit 1
Although it is possible to arrange the movable floor unit 1 by its own weight, the movable floor unit 1 can be surely arranged by providing the pressing portion 2B and the suction cup 2C.

As shown in FIG. 7, a first joint member 3A is pivotally supported on the anchor frame 2, and the distal end of the first joint member 3A is pivotally supported together with the base end of the second joint member 3B. This is a link mechanism that is pivotally supported by a connector and has a connecting portion 3C for arranging and fixing the movable floor 1A at the distal end of the second joint member 3B or connecting the adjacent movable floor 1A.

The link mechanism 3 includes a first joint member 3A and a second joint member 3A.
The node member 3B is made up of, for example, two rod-shaped members arranged at predetermined intervals as shown in FIGS.
An air spring 4 of a lifting mechanism to be described later is disposed between the two rod-like members between the distal end of the first joint member 3A and the proximal end of the second joint member 3B.

The connecting portion 3C is provided with the same length as the anchor frame 2 over the two rod-shaped members at the distal end of the second joint member 3B. For example, a shoulder 3b for receiving the movable floor 1A is provided. Have.

4 is the first of the link mechanism 3 as described above.
An air spring as an elevating mechanism provided between the distal end of the joint member 3A and the proximal end of the second joint member 3B. The air spring 4 moves the link mechanism 3 up and down to move the movable floor 1A up and down. It is for. As the elevating mechanism, for example, between the distal end of the first joint member 3A and the proximal end of the second joint member 3B,
A hydraulic cylinder device, a pneumatic cylinder device, a screw shaft advance / retreat drive device, or the like may be employed.

When the air spring 4 is employed as in this embodiment, compressed air is fed to expand the air spring 4, so that buoyancy is obtained and the movable floor 1A can be easily and reliably raised. Also, the movable floor 1A is released by discharging the compressed air and reducing the air spring 4 by its own weight.
Can be lowered, so that the structure can be simplified, the cost can be reduced, and the operation can be reliably performed.

Reference numeral 5 shown in FIGS. 3 and 6 denotes a connecting unit disposed between the movable floor units 1 provided at predetermined intervals. The connecting unit 5 includes the anchor frame 2 and the movable floor unit 1 like the movable floor unit 1. It has a link mechanism 3, but no air spring 4 is provided. And the bracing member 3c is arranged between the two rod-shaped members of the first joint member 3A and the second joint member 3B of the link mechanism 3 so as to maintain the strength.

Next, the operation of the movable floor unit 1 will be described. For example, FIGS. 1 to 3 show a long side 25 m × short side 13.
In the pool P of m, a case where the movable floor 1A is arranged in the entire area of the short side 13m from the long edge of the pool P to 8m to provide a shallow portion is shown. In this case, as shown in FIG. 1, the movable floor units 1 are arranged at predetermined intervals, and the connecting units 5 are arranged between the movable floor units 1.

At this time, the individual anchor frames 2 are fixedly arranged on the bottom surface of the pool P by the suction cup 2C, and the adjacent anchor frames 2 are connected to each other by the connecting member 2A. The entire anchor frame 2 over the entire short side of the pool P is fixed by the pressing portion 2B at the end of the anchor frame 2 facing the inner wall surface of the pool P.

After the above, the movable floor 1A is arranged at the connecting portion 3C of the second joint member 3B, and then compressed air is sent to the air spring 4 from a pump (not shown) installed on the pool floor. As shown, the distal end portion of the first joint member 3A and the second
The angle with the base end of the joint member 3B is opened around the pivotal support 3a, and buoyancy is obtained to gradually raise the distal end of the second joint member 3B.

When the air spring 4 is completely expanded, the supply of the compressed air to the air spring 4 is stopped. In the connecting unit 5, since the entire movable floor 1A is integrated by the connecting portion 3C, when the movable floor 1 arranged in the movable floor unit 1 rises, the link mechanism 3 in the connecting unit 5 follows this operation. Extend, and the movable floor 1 rises.

When a shallow portion is no longer required in the pool P, the air from the air spring 4 is discharged, the movable floor 1A is disconnected from the connecting portion 3C, and the connection of the anchor frame 2 is released, so that all of the pool P is in the pool P. Remove from.

For example, FIGS.
× In a pool P having a short side of 13 m, a case where a shallow portion is provided by arranging the movable floor 1A over the entire area of the long side 25 m from the short side edge of the pool P to 3.5 m. In this case, as shown in FIG. 4, the movable floor units 1 are arranged at predetermined intervals, and the connecting units 5 are arranged and operated between the movable floor units 1 in the same manner as described above.

As described above, the movable floor unit 1 is
Floor 1A just by arranging it without any modification
Can be moved up and down, so that it can be easily applied to an existing pool. For example, if the overall weight is increased, the entire movable floor unit 1 can be easily moved by its own weight only by installing it. Since there is no such layout, a shallow portion and a deep portion in the pool P can be arbitrarily laid out.

Further, when the overall weight of the movable floor unit 1 is small, the movable floor unit 1 can be securely fixed to the bottom surface of the pool by providing the suction cup 2C, and is provided over the opposite surface of the inner wall surface of the pool. In this case, it is possible to firmly fix by the pressing portion 2B.

Further, when the movable floor unit 1 employs the air spring 4 as an elevating mechanism, the movable floor 1 can be easily raised by the expansion and buoyancy of the air spring 4, and the reduction of the air spring can be achieved. The movable floor 1 can be easily lowered by its own weight.

The movable floor unit 1 can be modified as shown in FIG. 10 in addition to the above. In the above embodiment, by employing the air spring 4, only two stages of expansion (shallow) and contraction (deep) of the air spring 4 can be provided, but the movable floor unit 11 in FIG.
Can be adjusted at other stages.

That is, the movable floor unit 11 is configured such that the distal end of the first joint member 3A of the link mechanism 3 and the second joint member 3
The pivotal support 3a pivotally supports the base end of the intermediate joint member 13 and the base end of the intermediate joint member 13, and the air spring 4 is connected between the intermediate joint member 13 and the first joint member 3A. An additional air spring 14 is disposed between the intermediate node member 13 and the second node member 3B.

The movable floor unit 11 having the above structure is
As shown in FIGS. 10A to 10D, by selecting and expanding or reducing the air springs 4, 14 according to the depth,
In addition to the operation and effect of the movable floor unit 1 described above, it is possible to adjust an arbitrary depth as compared with the above-described movable floor unit 1, to perform fine adjustment, and to increase a vertical stroke. .

Further, the present invention is not limited to the above configuration, and for example, it is possible to adopt the configuration of FIG. FIG.
The movable floor unit 21 shown in FIG. 1 includes an anchor frame 22 disposed on the bottom of the pool P,
2, for example, an air cylinder device 23 disposed horizontally with the bottom surface of the pool P, a wire 24 having one end provided at a rod end 23A of the air cylinder device 23, and a movable floor 1B provided at the other end of the wire 24. It is provided with. Reference numeral 25 denotes a pulley provided at an end of the anchor frame 22 and around which the wire 24 is hung.

In the movable floor unit 21 having the above structure, when the anchor frame 22 is disposed on the bottom surface of the pool P, and the rod end of the air cylinder device 23 is moved forward by 23A, the wire 24 is pulled to lower the movable floor 1B. Then, when the rod end 23A is retracted, the wire 24 is wound loose and the movable floor 1B rises due to the buoyancy of the movable floor 1B itself. By doing so, the water depth of the pool can be made shallow, and since it is only necessary to dispose it on the bottom of the pool, the shallow portion can be freely laid out.

In the movable floor unit 21 as well, by providing the connecting portion 3C at the end of the movable floor 1B, the movable floor units 21 are connected to each other or a connection unit (in this case, only the movable floor 1B is connected). ) Can be linked. Further, the suction cup 2C can be fixed to the bottom surface of the pool P by attaching the suction cup 2C to the lower surface of the anchor frame 22, or by providing a pressing portion 2B on the inner wall surface of the pool P from the length direction of the anchor frame 22. By applying a pressing force to the anchor frame 22, the anchor frame 22 can be firmly fixed.

[0052]

As described above, the pool movable floor unit of the present invention is arranged on the bottom of the existing pool in a self-supporting manner without modifying the existing pool in order to provide a shallow portion with respect to the water depth of the existing pool. The movable floor is configured to be movable up and down, so it can be easily applied to existing pools and can be arranged at any place on the bottom of the pool, arbitrarily laying out shallow and deep parts It is possible to do.

Further, according to the present invention, there is provided an anchor frame disposed on the pool bottom surface, one base end of which is pivotally supported by the anchor frame, one distal end of which is pivotally supported together with the other base end, and A link mechanism having a connecting portion for arranging and fixing a movable floor at a distal end or connecting adjacent movable floors, and is provided between one distal end and the other proximal end of the link mechanism. And a lifting mechanism for expanding and contracting the link mechanism, so that the water depth of the pool can be reduced as described above, and the shallow portion can be freely laid out because it is only necessary to dispose it on the bottom of the pool. Becomes

Further, the pool movable floor unit of the present invention comprises:
In the above configuration, since the lifting mechanism is an air spring,
By using an air spring as the elevating mechanism, when the movable floor is raised, the air is sent in and the buoyancy is obtained as a whole, so that the movable floor can be easily and reliably raised. Since the movable floor descends due to the entire weight of the movable floor, the movable floor can be easily and reliably operated.

Further, the pool movable floor unit of the present invention comprises:
In the above configuration, an intermediate node member whose base end is pivotally supported is provided at a pivot between one end of the link mechanism and the other proximal end, and the distal end of the intermediate node and the other distal end are provided. Between the upper and lower parts and between the one end and the base end of the intermediate joint member, so that the shallow part of the pool can be provided step by step, and fine adjustment is possible. It will be easier.

Further, the pool movable floor unit of the present invention comprises:
An anchor frame disposed on the bottom surface of the pool, a cylinder device horizontally disposed on the bottom surface of the pool on the anchor frame, a wire provided at a rod end of the cylinder device, and a buoyancy movable floor provided at a tip of the wire. As described above, the water depth of the pool can be reduced as described above, and the layout can be arbitrarily laid out at a shallow portion since it is only necessary to arrange the pool at the bottom of the pool.

Also, the pool movable floor unit of the present invention comprises:
In any of the above-described configurations, since the anchor frame is fixed to the pool bottom surface with the suction cup, the entire pool movable floor unit can be reliably disposed on the pool bottom surface without being easily moved.

Further, the movable floor unit of the pool of the present invention
In any of the above-described configurations, when the anchor frame is disposed between the opposing surfaces of the pool inner wall surface, both ends of the anchor frame are provided with pressing portions that press the opposing surfaces of the pool inner wall surface. Reliable and stable fixing becomes possible.

[Brief description of the drawings]

FIG. 1 is a diagram showing a pool in which a pool movable floor unit of the present invention is arranged in a short side direction of the pool.

FIG. 2 is an enlarged view of the single movable floor unit of the present invention used as shown in FIG. 1, as viewed from above.

FIG. 3 is a top view of a connecting unit for connecting the pool movable floor unit of the present invention used as shown in FIG. 1;

FIG. 4 is a diagram showing a pool in which the pool movable floor unit of the present invention is arranged in a short side direction of the pool.

FIG. 5 is an enlarged view of the single pool movable floor unit of the present invention used as shown in FIG. 4, as viewed from above.

FIG. 6 is a top view of a connecting unit for connecting the pool movable floor unit of the present invention used as shown in FIG. 4;

FIG. 7 is a view of the movable floor unit of the present invention as viewed from the side.

8A and 8B show the vicinity of the anchor frame of the movable floor unit of the pool of the present invention, wherein FIG.
(B) is the figure seen from the left side direction of FIG.

FIG. 9 is a diagram showing the vicinity of an anchor frame of the pool movable floor unit of the present invention.

FIGS. 10 (a) to (d) are views showing a modified example of the pool movable floor unit of the present invention, and showing an operation state.

FIG. 11 is a view showing the configuration of another embodiment of the pool movable floor unit of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 (Pool) Movable floor unit 1A Movable floor 1B Movable floor 2 Anchor frame 2B Press part 2C Suction cup 3 Link mechanism 3A 1st joint member 3B 2nd joint member 4 Air spring (elevating mechanism) 11 (Pool) movable floor unit 13 Intermediate Knot member 14 (separate) air spring (elevating mechanism) 21 (pool) movable floor unit 22 anchor frame 23 air cylinder device 23A rod end 24 wire

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Shin Seki 1-7-89 Minami Kohoku, Suminoe-ku, Osaka-shi, Osaka Inside Hitachi Zosen Corporation

Claims (7)

[Claims] The present invention is characterized in that, in order to provide a shallow portion with respect to the water depth of an existing pool, the movable floor disposed on the bottom of the pool is movable up and down as a free-standing type without remodeling the existing pool. Pool movable floor unit. 2. A pool movable floor unit for arranging a movable floor on a bottom surface of a pool and raising and lowering the movable floor in order to provide a shallow portion with respect to the water depth of an existing pool; One end of the anchor frame is pivotally supported, one end of the anchor frame is pivotally supported together with the other end of the anchor frame, and the movable floor is arranged and fixed to the other end of the anchor frame or connected to the adjacent movable floor. A link mechanism having a connecting portion for connecting the link mechanism, and an elevating mechanism provided between one distal end and the other base end of the link mechanism for expanding and contracting the link mechanism. The pool movable floor unit according to claim 1. 3. The pool movable floor unit according to claim 2, wherein the lifting mechanism is an air spring. 4. A link between one end of the link mechanism and the other end of the link mechanism is provided with an intermediate joint member whose base end is pivotally supported. The pool movable floor unit according to claim 2 or 3, wherein an elevating mechanism is provided between the distal end portion and between one of the distal end portions and the base end portion of the intermediate node member. 5. A pool movable floor unit for arranging a movable floor on the bottom surface of a pool to raise and lower the movable floor in order to provide a shallow portion with respect to the water depth of an existing pool; A cylinder device disposed horizontally on the pool bottom surface on the anchor frame, and a wire provided at a rod end of the cylinder device;
The movable floor unit according to claim 1, further comprising a buoyancy movable floor provided at a tip of the wire. 6. The pool movable floor unit according to claim 2, wherein the anchor frame is fixed to a bottom surface of the pool with a suction cup. 7. When the anchor frame is arranged between the opposing surfaces of the pool inner wall surface, pressing portions are provided at both end portions of the anchor frame for pressing the respective opposing surfaces of the pool inner wall surface. A pool movable floor unit according to any one of claims 2 to 6.