JPH0568988B2 - - Google Patents

Description

Detailed Description of the Invention (Industrial Application Field) The present invention relates to a hot water bathing device for bedridden elderly people, handicapped people, etc. who take a bath on a stretcher, and in particular, to a hydraulic cylinder for driving to move up and down the inside of a bathroom pit. This invention relates to a hot water bath apparatus in which the bed plate is always placed at the same height as the floor surface by cooperating with a hydraulic cylinder that holds the bed plate for placing a stretcher on the bathtub.

(Prior art) The number of physically disabled and elderly people who have difficulty standing and walking is increasing in nursing homes and hospitals. To bathe such people in a bathtub, it is appropriate for the bather and the caregiver to transport them from the hospital room while supine on a transport stretcher, take a bath while lying down, and then transport them to the hospital room after leaving the bath. be.

Conventionally, a wheelchair-type bathing device has been proposed in Japanese Utility Model Application Publication No. 64-22340. FIG. 7 of the publication shows that a focus is formed from the bathroom floor, and four hydraulic cylinders are erected on the base frame at the bottom of the pit to support the bathtub, while the base frame is erected to support the bathtub. At the upper end of the support column that passes through, a base plate on which a wheelchair is placed will be placed at the same height as the floor. In order to prevent the bathtub from shaking when going up and down, the bathtub is equipped with a guide rail that stands up on the base frame and a guide roller that is guided by the guide rail.On the other hand, the bottom wall of the bathtub is equipped with a guide rail that is guided by the guide rail to prevent water from leaking even if the column and the bathtub move. The structure is equipped with a sliding ring and a flexible membrane interposed in the support column. As a result, when the bathtub is raised by a hydraulic cylinder, the wheelchair bather on the platform can take a bath in the hot water, and when the upper edge of the bathtub is lowered to the floor, the wheelchair can be moved out of the bath. ing.

(Problem to be Solved by the Invention) However, in the conventional device as described above, it is difficult to prevent the bathtub containing hot water from rolling horizontally using the guide rails and guide rollers. Early buckling occurs at the mounting base end of an upright hydraulic cylinder and the bathtub mounting section at the tip of the rod. In addition, since the wheelchair is placed on the base plate, the upper end of the column bends and deforms, and the middle section of the column is deflected in the entire radial direction of the column at the bottom wall of the bathtub. Since the bending phenomenon also occurs at the ends, the struts curve into an S-shape and buckle very quickly over their entire length. Furthermore, splashes and overflowing water from heated bath water mixed with disinfectants and bath chemicals accumulates at the bottom of the pit, corroding and damaging the lower end of the hydraulic cylinder and column, promoting buckling, and causing it to move freely. Difficulty bathing is likely to cause fear and irreparable danger to the bather.

The purpose of the present invention is to provide a bathtub that moves up and down so that it does not sway horizontally, a hydraulic cylinder that drives the bathtub up and down to avoid buckling, and a hydraulic cylinder that is fixed to the bottom wall of the bathtub to support the base plate. By communicating hydraulic fluid with the driving hydraulic cylinder, the hydraulic cylinder is always kept flush with the floor surface, and by providing a cylindrical cover on the support hydraulic cylinder, a long stretcher can be carried by the hydraulic cylinder. The purpose is to be able to support it without buckling. Furthermore, it is an object of the present invention to provide a device that does not require an operating tool at the bottom of the pit, eliminates corrosion caused by overflowing water, and eliminates the occurrence of buckling caused by the overflow, thereby ensuring reliable and accurate operation and durability.

(Means for Solving the Problems) In order to achieve the above object, the hot water bath apparatus of the present invention has four guide columns erected between the base frame at the bottom of the pit and the lower surface of the floor forming the upper end opening of the pit. A guide frame equipped with a bathtub is provided on the guide column so as to be movable up and down, and the guide frame is connected to the lower ends of rods of four reciprocating hydraulic cylinders for driving which are attached to the lower surface of the floor and suspended. On the other hand, on the bottom wall of the bathtub, the upper end of the rod is erected with the tip of a double-acting hydraulic cylinder for holding watertightly fixed with a base plate and a reinforcing cover, and the inner diameter of the hydraulic cylinder for holding is erected. By making the diameter twice that of the drive hydraulic cylinder and communicating the hydraulic fluid through the hydraulic unit, the base plate is always maintained at the same height as the floor surface regardless of whether the bathtub is raised or lowered. be.

(Function) In the hot water bath device constructed as described above, the guide frame to which the bathtub is fixed, which can be raised and lowered freely, is interposed between four guide columns fixed upright between the bottom of the pit and the floor of the pit opening. The structure is designed to reliably prevent rolling. Since the guide frame is connected to the lower end of the rod of a hydraulic cylinder suspended from the floor, this hydraulic cylinder works to prevent buckling even if the bathtub or guide frame swings horizontally.

Furthermore, the hydraulic cylinder that stands up on the bottom wall of the bathtub is housed and fixed in a lower outer cylinder as a reinforcing member and an upper outer cylinder that is watertightly accommodated and protrudes from the lower outer cylinder, and a stretcher car is placed on the upper end of the upper outer cylinder. Since the long bed plate is fixed horizontally, the hydraulic cylinder for holding the bed plate only exerts the vertical operating force of the rod, and the deformation buckling force applied to the hydraulic cylinder by the load of the stretcher vehicle is the vertical force. The outer cylinder works to support and absorb water.

The four drive hydraulic cylinders and the hydraulic cylinder installed in the bathtub are double-acting, and by circulating hydraulic fluid between them through the hydraulic unit, the bathtub is moved between the upper part of the pit and the inside of the pit. Even if it moves up and down, the base plate works to maintain the same height position as the floor surface at the pit opening. As a result, after lowering the bathtub into the pit, the stretcher car is pushed from the bathroom floor, past the upper edge of the bathtub circumferential wall, and onto the base plate. Thereafter, when the bathtub rises, the bather is immersed in the hot water along with the stretcher car.

(Example) An example will be described with reference to the attached drawings. In Figures 1 to 3, 1 is the bathroom floor, and a large stretcher car 2 is used for carrying a large number of bathers to enter and exit the bath. This is a place where the person is pushed by a caregiver. The bathroom floor surface 1 is formed of a floor portion 3 made of a reinforced concrete slab, wood, or the like. A pit opening 5 through which a bathtub 4 is raised and lowered is formed in the floor 3. A pit 6 having a larger planar area than the opening is dug below the opening 5,
Its inner periphery and bottom wall are made of solid concrete.

A substantially rectangular horizontal corrosion-resistant base frame 9 whose four corners are supported by adjustment legs 8 is arranged on the pit bottom wall 7, and the four corners of the base frame 9 are connected to the beam members 10 provided on the lower surface of the floor. A guide column 11 is vertically fixed and fixed in between.

A guide roller 14 consisting of a housing 13 sandwiched between two upper and lower rollers 12a and 12b is slidably installed on both sides of the guide column 11, and the guide roller 14 has a substantially rectangular guide frame 15 and a physically formed. A bathtub 4 is disposed on a pair of supports 16 that stand up from a guide frame 15 via a beam member 17 and a reinforcing plate 18. The bathtub 4 is made of a corrosion-resistant metal plate and is formed into a long rectangular shape that can accommodate the stretcher car 2 sufficiently. On the other hand, the base ends of tubes 22 of four inverted reciprocating hydraulic cylinders 21 are fixedly suspended from the lower surface of the beam 10 of the floor section through rubber packings 20. The lower end of the rod 23 of the hydraulic cylinder 21 is connected to both side frame portions 25 of the guide frame 15 by a clevis 24.
It is pivoted to. This hydraulic cylinder 21 is driven via a hydraulic unit 26 disposed on the circumferential wall of the pit and a pressure-resistant hose to be described later to move the bathtub to a position above the floor surface so that the upper edge 30 of the circumferential wall of the bathtub is at the same height as the floor surface 1. It is driven to be able to move up and down between positions.

On the other hand, a lower cylindrical body 33 having a base end of a tube 36 of a double acting hydraulic cylinder 32 fixed thereon is fixedly suspended in the center of the bottom wall 31 of the bathtub. The suspension means fixes the upper end flange 34 of the lower cylindrical body to the bathtub bottom wall 31 through a packing 35 in a watertight manner. The lower part of the upper cylinder 37 is fitted into the inner surface of the upper small diameter portion 36a of the lower cylinder 33 in a watertight and slidable manner. The flange 38 at the upper end of the upper cylinder 37 is fixed to the center of the lower surface of the perforated base plate 39. The upper end of a rod 41 that extends and retracts from the tube 36 of the hydraulic cylinder 32 fixed to the bottom of the lower cylindrical body 33 is fixed to the flange 38 .

In order to always maintain the base plate 39 at the same height as the floor surface 1 even though the bathtub 4 moves up and down, the four double-acting hydraulic cylinders 21 and four double-acting hydraulic cylinders 32 require hydraulic fluid. It is achieved by the cooperative action of

The inner diameter of the tube 36 of the hydraulic cylinder 36 is twice the inner diameter of the tube 22 of the four hydraulic cylinders 21. Therefore, the total amount of hydraulic fluid in the four tubes 22 is equal to the amount of hydraulic fluid in the tube 36.

A pressure hose 46 connected to a port 45 at the upper end of the four tubes 21 (head cover part) is connected to a port 47 at the upper end of the hydraulic cylinder tube 36 and protrudes downward from the bottom wall of the lower cylinder 33. A convergent connection is made to the lower end of the pipe 48. On the other hand, pressure hoses 50 connected to ports 49 at the lower ends (headcap portions) of the four tubes 22 are connected to the hydraulic unit 26 by pressure hoses 51 connected thereto. A port 52 on the lower end side of the tube 36 of the hydraulic cylinder 32 is connected to a pressure-resistant hose 53 that is connected to the hydraulic unit 26.

In order to raise the bathtub 4 from the lowered position shown in FIG. Then, the bathtub 4 integrated with the guide frame 15 is raised. At this time,
The upper hydraulic fluid in the four tubes 22 moves inside the pressure hose 46 in the direction of the solid line arrow 56, and flows through the pipe 48.
By flowing into the upper part of the piston in the tube 36 through the tube 36, the rod 41 is relatively contracted and lowered in response to the rise of the bathtub, so that the base plate 39 is always arranged at the same height. The lower hydraulic fluid of the tube 36 moves within the pressure hose 53 in the direction of the solid line arrow 57 by the amount accommodated in the rod 37, flows into the hydraulic unit 26, and circulates.

When the bather finishes bathing and lowers the bathtub, the hydraulic unit 26 is driven and the pressure hose 5
The hydraulic fluid in the pressure hose 51 is supplied in the direction of the chain arrow 58 to extend the rod 41, while the hydraulic fluid in the pressure hose 51 is moved in the direction of the chain arrow 59 (towards the hydraulic unit). As a result, the upper hydraulic fluid of the tube 36 moves from the pipe 48 inside the pressure hose 46 in the direction of the chain arrow 60, and the four rods 23 extend downward and lower the bathtub 4 which is integrated with the guide frame 15. let Then, a rod 41 corresponding to the lowering of the bathtub 4
Due to the upward extension of the base plate 39, the base plate 39 is maintained at the same height as the floor surface 1. The bathtub 4 is lowered and the upper edge is on the floor 1
When the stretcher car 2 reaches the same height as the bathing area, the stretcher car 2 is pushed away to leave the bath. At this time, the legs of the stretcher vehicle 2 move from the base plate 39 to the floor 1 passing through the upper edge of the bathtub.

The stretcher car 2 is pushed and moved by four leg wheels 62 provided on supporting legs 61, and a stretcher 63 on which the bather lies supine is provided on the supporting legs 61. The frame provided on the stretcher 63 is bent at three places and held in a wheelchair shape as shown by the dashed line in FIG. 3, so that a bather who can sit in a sitting position can take a bath. The pillow part 64 is arranged so that the head of a supine bather is placed above the water surface.

(Effects) In the present invention, the guide column for lifting the bathtub is firmly fixed upright on the base frame at the bottom of the pit and the floor forming the pit opening, so the bathtub does not sway horizontally during lifting. There is no buckling damage such as bending deformation of the pressure cylinder, and even though the bathroom floor supported by guide columns is made of wood, it can withstand the load of a heavy stretcher carrying a bather, so the installation location can be adjusted. In addition, the pit is formed to be larger than the bathtub lift opening, and a worker can easily enter the pit and repair equipment that is easily corroded by humidity.

Furthermore, the four hydraulic cylinders for driving the bathtub up and down are fixed to the bottom of the floor and suspended upside down, unlike conventional hydraulic cylinders that are installed and erected on the bottom of the pit, so deformation buckling does not occur. Small-diameter ones can be used, and they will not corrode due to wastewater from overflowing hot water.

In addition, unlike conventional supports that stand up from the bottom of the pit and are prone to buckling, the means for supporting the bed plate for placing the stretcher vehicle has a lower cylinder fixed to the bottom wall of the bathtub and a hydraulic cylinder inside the upper cylinder that expands and contracts. Even if a long and heavy stretcher is deviated and placed on the bed plate, the cylindrical body supports the load without buckling, and the hydraulic cylinder simply holds the bed plate relative to each other. Just do it.

Furthermore, the four cylinders that drive the bathtub up and down and the cylinder that holds the base plate are double-acting and connected to the hydraulic unit with a pressure-resistant hose, so that they cooperate by circulating the hydraulic fluid, and the bathtub moves up and down. This has the advantageous effect of always maintaining the bed plate at the same height as the floor surface even when moving the stretcher car, and ensuring safe loading and unloading of the stretcher car and safe placement on the bed plate.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional front view of the hot water bath apparatus of the present invention, FIG. 2 is a plan view of FIG. 1, and FIG. 3 is a longitudinal sectional side view of FIG. 1. 1... Bathroom floor, 2... Stretcher car, 3... Floor,
6... Pit, 9... Base frame, 11... Guide column, 15... Guide frame, 21... Double-acting hydraulic cylinder, 26... Hydraulic pressure unit, 32... Hydraulic cylinder for holding the base plate. , 39... Base plate, 53, 59...
Pressure resistant hose.

Claims (1)

[Scope of Claims] 1. A guide column is erected from the bottom of the pit to the floor that forms the pit opening, and a bathtub is provided in the guide frame that is movable up and down on the guide column, and the drive is suspended upside down from the bottom surface of the floor. The lower ends of the rods of four double-acting hydraulic cylinders are connected to the guide frame, and the upper ends of the tubes are fixed to the bottom wall of the bathtub and suspended. A base plate is installed horizontally on the upper end of the rod of the dynamic holding hydraulic cylinder, and the bathtub is raised and lowered by making the four hydraulic cylinders and the holding hydraulic cylinder work together via a hydraulic unit. A hot water bath device characterized in that the base plate is always maintained at the same height as the floor surface. 2. The hydraulic cylinder that supported the base plate is housed in a lower cylinder whose upper end edge is fixed to the bottom wall of the bathtub, and an upper cylinder which is fitted into the lower cylinder in a watertight and slidable manner. The hot water bath apparatus according to claim 1.