JP2002047821A - Shutter mechanism in lifting device for lifting floor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify the structure of a shutter in a lifting device for lifting floor. SOLUTION: This shutter mechanism comprises a sprocket 14 for driving a lifting floor 1, which is set within a vertical groove 5 provided on the side wall 2 of a water tank S, a roller chain 12 wound on the sprocket 14, having a length satisfying the depth dimension of the water tank S to suspend the lifting floor 1 through a hanger part 6, and a shutter plate 22 provided on the link 2 of the roller chain 12. The shutter plate 22 follows the hanger part 6 according to the vertical movement of the lifting floor 1 to shield the opening part 9 of the vertical groove 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a lifting device for connecting a lifting floor of a pool or a bathtub to a lifting device, which lifts and lowers a vertical groove in which the lifting device is installed as the lifting floor is raised and lowered. In addition, the present invention relates to a shutter mechanism in an elevating floor elevating device for automatically shielding an opening of the vertical groove.

[0002]

2. Description of the Related Art Conventionally, the floors of pools and bathtubs used by a large number of people have been made up and down so that they can be used by children, adults and persons with disabilities by changing the water depth. Pools and bathtubs provided with the lifting device are well known.

[0003] The lifting floor installed in the water tank for entering these people has a lifting hand connected to a lifting device in a vertical groove formed in each of the four corners of the wall of the water tank, and the lifting hand has a vertical position. It moves up and down while moving up and down along the opening of the groove.

[0004] In these water tanks, if the opening of the vertical groove in which the elevating device is installed is left open, there is a danger that a child may injure his / her feet and limbs. As in the pool disclosed in the above-mentioned publication, the opening of the vertical groove above the position of the elevating floor is automatically hidden.

[0005] A shutter device in this conventional elevator floor lifting device includes a narrow and long shutter plate formed of a spring steel material having one end connected to a lifting portion of the elevator floor, a drum for winding the shutter plate, The shutter plate comprises a guide roller and a face plate with which the shutter plate slides,
When the lifting floor moves up and down, the shutter plate automatically covers the opening by following the lifting and lowering movement of the lifting part. Further, this shutter device is installed as a device separate from the wheel group in a frame in which a wheel group provided in a vertical groove shape on the wall of the water tank is stored.

[0006]

However, since the shutter device in the above-mentioned elevating floor elevating device has a structure in which a shutter plate made of a spring steel material is wound up with a drum or pulled out from the drum as the elevating floor moves up and down. Because thin, narrow and long spring steel is used, the shutter plate must be extremely tightly tensioned to cover the opening without bending the shutter plate or to wind the shutter plate tightly around the drum. It is necessary to keep. For this reason, there is a disadvantage that the load on the shutter plate and the connection portion thereof is large, and a failure easily occurs due to fatigue. Further, since this shutter device is installed separately from the wheel group, the vertical groove for installing and storing the wheel group and the shutter device becomes large, and the configuration becomes complicated and expensive.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object a simple shutter mechanism that can smoothly move up and down without applying excessive tension to the shutter.

[0008]

According to the present invention, there is provided a sprocket for driving an ascending and descending floor installed in a vertical groove provided on a side wall of a water tank, and a length wound around the sprocket and at least sufficient for a depth dimension of the water tank. And a roller chain for suspending the elevating floor via a hanging hand portion, and a shutter plate is provided on a link of the roller chain, and the shutter plate is moved along with the elevating movement of the elevating floor. The opening of the vertical groove is shielded following the hanging part.

With such a structure, when the roller chain is moved up and down by rotating the driving sprocket, the elevator floor is moved up and down, and together with the roller chain up and down movement, the shutter plate is also moved to the lifting hand of the elevator floor. The shutter plate automatically covers the opening of the vertical groove following the rise and fall of the vehicle.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a shutter mechanism in a raising / lowering apparatus according to the present invention will be described below in detail with reference to the accompanying drawings.

FIG. 1 to FIG. 3 show a raising and lowering device of the present invention and a shutter mechanism in the device. The raising and lowering device includes a raising and lowering floor 1 which rises and lowers along a side wall 2 of a water tank S, and A drive mechanism 10 for the lifting floor 1 and a drive mechanism 10
And a shutter mechanism 20 that is incorporated and formed in the camera.

The water tank S is a pool or a bath tub, and a driving mechanism 10 for moving the lifting floor 1 up and down is provided on both side walls 2 and 2 thereof.
A vertical groove 5 having a U-shaped cross section in which a part of the vertical groove 5 is installed is provided, and shielding plates 7 are provided along both side walls 2, 2 of an opening 9 of the vertical groove 5. , 7 are formed with slits 8.

The elevating floor 1 is composed of a beam-shaped frame 3 made of stainless steel or aluminum, and a floor 4 made of plastic foam or lightweight plate stretched on the upper surface thereof. At a plurality of locations on the side surface, a suspending portion 6 projecting through a slit 8 into a vertical groove 5 recessed in the side wall 2 of the water tank S is provided in a projecting manner.

The drive mechanism 10 has a roller chain 12 having one end connected above the hanging portion 6 of the lift floor 1 and the other end connected above the turnbuckle 11, and one end hanging the lift floor 1. A wire rope 13 connected below the hand portion 6 and the other end connected below the turnbuckle 11
A driving sprocket 14 installed above the vertical groove 5 around which the roller chain 12 is wound, a wheel 15 installed below the vertical groove 5 around which the wire rope 13 is wound, The drive unit 16 includes a motor 16a for rotating and driving the sprocket 14 and a speed reducer 16b.

The roller chain 12 is mounted on the suspended floor 1
Has a length that is at least as large as the depth of the water tank S so that the water can be lowered to the bottom of the water tank S. Further, the wire rope 13 may use a roller chain instead.

The driving device 16 is installed in a driving chamber provided at the upper peripheral edge of the water tank S and beyond the water storage, and rotates the sprocket 14 via the driving shaft 17.

The shutter mechanism 20 includes a shutter plate 22 having a width substantially the same as the opening width of the vertical groove 5 in the plate of each outer link 21 in the roller chain 12.
The shutter plates 22 are continuous in a belt shape at a small interval in the front-rear direction.

The shutter mechanism 20 keeps the opening 9 of the vertical groove 5 above the elevating floor 1 always shielded by the shutter plate 22, and the gap between the shutter plate 22 and the side wall 2 is shielded by the shielding plates 7, 7. It is hidden.

The elevating floor elevating device of this embodiment and the shutter mechanism in the device are configured as described above. Adjustment of the tension of the roller chain 12 and the wire rope 13 that suspends the elevating floor 1 is performed by the turnbuckle 11.

Each shutter plate 22 constituting the shutter mechanism 20 is connected to each outer link 2 of the roller chain 12.
1 are independent from each other, and the individual shutter plates 2 themselves are continuous in a belt shape along the roller chain 12 without any mutual tension. Therefore,
When the sprocket 14 is rotated by the driving device 16, the shutter plate 22 follows the lifting and lowering of the hanging portion 6 of the raising and lowering floor 1 with the raising and lowering movement of the roller chain 12 accompanying the raising and lowering of the raising and lowering floor 1. The slit 8 is automatically and reliably shielded from the inside of the vertical groove 5.

The rigidity of the shutter plate 22 in the shutter mechanism can be changed by changing its thickness, and the smoothness of its movement is not affected by changing the rigidity. Can be changed by changing the thickness of the shutter plate 22.

[0022]

The present invention is embodied in the form described above and has the following effects.

Since the shutter mechanism is constructed by providing the shutter plate on the driving roller chain with the lifting floor suspended, the shutter mechanism is simple and the vertical groove for installing the driving mechanism is also compact, and the shutter for the water tank is provided. Can be installed economically together with the lifting device.

Further, unlike the conventional example, a strong load is not applied to the shutter mechanism, so that the durability is excellent.

[Brief description of the drawings]

FIG. 1 is a principle diagram showing a driving mechanism in a lifting floor lifting device according to the present invention.

FIG. 2 is a partial cross-sectional view of the drive mechanism shown in FIG.

FIG. 3 is an enlarged partial front view of a shutter mechanism in the drive mechanism of FIG.

[Explanation of symbols]

1 elevator floor, 2 side wall, 5 longitudinal groove, 9 opening, 12
Roller chain, 14 sprockets, 21 outer links,
22 shutter plate, S tank,

Claims (1)

[Claims] An elevation floor driving sprocket installed in a vertical groove provided on a side wall of a water tank, and a lift wound around the sprocket and having a length at least as large as the depth of the water tank. A roller chain that is suspended via a lifting hand, and a shutter plate is provided on a link of the roller chain, and the shutter plate follows the lifting hand as the lifting floor moves up and down. A shutter mechanism in an elevating floor elevating device, wherein an opening of the vertical groove is shielded.