JPH019561Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a device for raising and lowering the underframe of a stretcher installed in a lifting bathtub for the physically handicapped. The device relates to a lifting device that moves the bathtub upward by moving onto the underframe and then lowers the underframe together with the stretcher through the hot water to the bottom wall of the bathtub.

Conventionally, in order to bathe people with lower limb disabilities who have difficulty standing up, bedridden elderly, etc. in facilities, hospitals, etc., a support is provided that penetrates the bottom wall of the elevating bathtub. At the same time, a stretcher with a patient lying on its back is placed on a transport vehicle, and the transport vehicle is pushed to the outside of the bathtub. Then, the bathtub is lowered below the platform of the transport vehicle, the stretcher on the transport vehicle is transferred to the platform frame inside the bathtub, and the bathtub is raised, allowing the patient on the stretcher to take a bath in the hot water of the bathtub. It was hot.
However, when the bathtub is raised to bathe a patient, the side wall of the bathtub rises higher than the level of the nurse's eyes, making it impossible to assist the patient. Since he had no ability to wash his body, he tended to avoid bathing out of a sense of inconvenience and isolation.

On the other hand, Japanese Patent Application Laid-Open No. 55-86458 discloses a system in which a pedestal supporting a stretcher rises as a bathtub descends, and a pedestal that supports a stretcher descends as the bathtub rises. A patient bathtub device is disclosed in which the bathtub position is lowered to facilitate assistance operations.

However, in this conventional bathtub device, one end in the longitudinal direction of the pedestal is guided and supported in a cantilever manner with respect to the support casing, and is connected to the lifting device via a chain. The support casing that is guided and supported by the support casing must be a high-strength structure that can withstand the moment load, and the pedestal itself that is guided and supported by the support casing in a cantilever manner must also be high enough to withstand the bending moment load. Must have a strong frame structure. Therefore, there is a drawback that the entire bathtub device becomes larger and heavier.

In addition, in the conventional bathtub device described above, since it is necessary to immerse the pedestal supported on the outside of one longitudinal end of the bathtub into the bathtub, the pedestal must be bent into a substantially L-shape. As the height of the bathtub device becomes larger, the height of the support casing that guides and supports the pedestal so that it can be raised and lowered also becomes larger, resulting in an increase in the height of the entire bathtub device.

The present invention eliminates the above-mentioned defects, and its gist is to erect a column that penetrates the bottom wall of the elevating bathtub, to provide a central axis of a pantograph link mechanism at the upper end of the support, and to attach a platform to the link mechanism. A frame is provided, and when the bathtub rises, the bottom wall expands the links horizontally and lowers the frame, and when the bathtub descends, the bottom wall folds the links vertically and raises the frame. , both can move in opposite directions.

According to the present invention having the above configuration, the stretcher lowers as the bathtub rises, so the patient's bathing position can be lowered to facilitate assistance operations.Moreover, the stretcher penetrates the bottom wall of the bathtub. Since it is supported in a well-balanced manner by a pair of cross links on each side supported by support columns, it is possible to prevent excessive bending moment loads from being applied to the cross links and columns. Therefore, the stretcher support mechanism can be made smaller and lighter than the conventional stretcher cantilever guide support structure.

In addition, the cross links and struts for supporting the stretcher and moving the stretcher up and down in the opposite direction in conjunction with the up and down movement of the bathtub are arranged on the underside of the stretcher.
A stretcher support mechanism higher than the bathtub is not required, and the entire bathtub device can be made smaller in the height direction. An embodiment of the present invention will be described below with reference to the accompanying drawings.

1 and 2, 1 is a bathtub, and the bathtub 1 is attached to a housing 4 via cantilevered supports 2 and 3.
It is connected to a drive mechanism 5 housed in. In the drive mechanism 5, a worm 7 and a worm gear 8 (only the cover is shown) are connected to the output shaft of a motor 6, a drive chain wheel 10 is provided on the output shaft 9 of the worm gear 8, and a chain 11 is connected to the chain wheel 10. Chain wheel 1 driven through
2 and 13 are provided. The chain wheel 12 is fixed to a shaft 15 mounted on a frame 14 on both inner sides of the casing, and the chain wheel 13 is supported on a pair of holding frames 18 on a support stand 17 via support shafts. Both ends of the chain 11 are connected to the middle plate 20 of the rectangular operating frame 19 via attachment members. At the top and bottom of both inner surfaces of the operating frame 19, sixth
A special bearing 21 as shown in FIGS. 7 and 7 is fixedly installed, and this bearing 21 is built into a rail 22 vertically provided on the front surface of both the frames 14 so as to be slidable in the vertical direction. This bearing 21 operates while enduring a huge load. Supports 2 and 3 for cantilevering the bathtub are fixed to both sides of the outer surface of the operating frame 19. The drive mechanism 5 moves the bathtub 1 up and down via the switches on the switch panel 24 on the back of the housing 4.

A pair of base frames 25 are extended from both sides of the bottom wall of the housing 4 to the bathtub side in front, and a support plate 26 is installed between both base frames 25, and a support plate 26 is installed from above the support plate 26 to penetrate the bathtub bottom wall 27. A pillar 28 is erected. A sliding pipe 29 equipped with an O-ring is interposed in this support column 28, and a pleated rubber plate 30 is connected watertightly between the sliding pipe 29 and the bottom wall 27 of the bathtub, so that the stagnation tank 1 is connected to a certain extent. The support is designed to prevent damage or water leakage even if it moves up and down while shaking. The height of the support column 28 is approximately half the height of the bathtub side wall 31 when the bathtub 1 is lowered to the lower end.

A pantograph type underframe elevating device 37 is attached to the upper end of the support column 28, which is integrated with an underframe 36 on which a stretcher 35 is slidably mounted. That is, a plate-like mounting member 38 is fixedly provided at the upper end of the support column, and support shafts 40 are provided on both outer sides of shaft mounting members 39 provided at both ends of the member 38. The centers of links 41, 42 and 43, 44 are pivotally connected to both support shafts 40, as shown in FIGS. 4 and 5, respectively. Reinforcement rods 45 and 46 are connected to the links 41 and 43, and reinforcement rods 47 and 48 are connected to the inner links 42 and 44. Link 41,
Groove rollers 49 and 50 that are pivotally attached to the lower ends of the bathtubs 43 are slidably fitted into guide grooves 51 and 52 provided in the bottom wall 27 of the bathtub. Groove rollers 53, 54, which are pivoted to the lower ends of the links 42, 44, are slidably fitted into guide grooves 55, 56.

On the other hand, the underframe 36 connected to the link mechanism is provided with a pair of parallel inner frames 59 with a space between both end frame portions 58 of a rectangular frame body 57, and guide grooves are provided on both sides of the inner frames 59, respectively. 60, 61, 62, and 63 are drilled. Groove rollers 64, 6 at the upper ends of links 41, 43
5 is fitted into the guide grooves 60, 62, and the links 42,
Groove rollers 66 and 67 at the upper end of 44 are respectively guide grooves 6.
1,63 is inserted. And both inner frames 5
9 are firmly connected by a reinforcing plate 81.

A plurality of rollers 68 are arranged in rows on the outer surface of the frame portions 58 at both ends of the underframe 36 . The stretcher 35 is placed on this roller 68.
Both sliding plates 69 on the lower surface run slidably.

The transport vehicle 70 connected to the underframe 36 in the bathtub is H
Casters 72 are provided at the four corners of the shaped base 71, a height-adjustable hydraulic cylinder 73 is erected from the center of the base 71, and the underframe 36 is mounted on its operating rod.
A transport platform 74 having the same structure as the one shown in FIG. A foldable auxiliary stand 75 is pivotally attached to one side edge of the conveyance stand 74 and connected to the frame 36 in the bathtub via this auxiliary stand 75. At this time, the stretchers 35 are mutually transferred via the sliding plate 69.

Attachment members 7 are attached to the lower edges of the centers of both inner frames 59, respectively.
A coil spring 77 is provided between both mounting members 76 and both ends of the reinforcing rod 47, and a coil spring 77 is also provided between both mounting members 76 and the inner portions of the links 41 and 43 of the reinforcing rod 45. 78. By the pair of coil springs 77 and 78, the underframe 34 is supported on all the links and the center thereof is always held at a position directly above the support shaft 40 without causing the underframe 34 to move inadvertently to both sides.

Note that the instruction numbers 79 and 80 are the water supply pot and the hot water supply pot, respectively.

The operation of the present invention configured as above will be explained.

When bathing a patient in hot water, the bathtub 1 is lowered in advance by the drive mechanism 5 to the lower end position shown by the solid line in FIG. At this time, each of the cross-shaped links 41, 43 and 42 whose center is pivotally connected to both support shafts 40 at the upper end of the column,
The lower end of 44 has four guide grooves 5 integral with the bottom wall 27.
1, 57, 52, and 56, and stand up in a state where they intersect at an angle of 45 degrees, as shown in FIG. When each link stands up, the underframe 36
rises above the upper edge of the bathtub side wall. At this time, the auxiliary stand 75 of the transport vehicle 70 is connected to one side edge of the underframe 36 as shown in FIG. Then, the stretcher 35 on which the patient is lying supine is slid onto the frame 36 by a light push by the nurse.

When the stretcher 35 with the patient lying on its back is transferred onto the frame 36 and fixed with appropriate stoppers, the drive mechanism 5
As a result, the bathtub 1 rises to the position indicated by the chain line in FIG.
At this time, the links that had been standing in a cross-shaped manner at an inclination angle of 45 degrees are folded horizontally due to the loads of the patient, stretcher, and underframe 36, and the underframe descends toward the bathtub bottom wall 27 as shown by the chain line. .

The present invention, which has the above-mentioned effects, lowers the frame on which the stretcher is placed in proportion to the height at which the bathtub rises.
The patient lying supine on the frame via a stretcher can take a bath in hot water. When the bathtub is lowered, the underframe can rise in proportion to this to a height above the upper edge of the side wall of the bathtub and to the same height as the carrier of the carrier. Therefore, by connecting the auxiliary platform of the transport vehicle, the stretcher on which the patient is placed can be reciprocated in and out of the bathtub to enter and exit the bathtub with a slight manual push from the nurse.

Furthermore, since the patient can enter and exit the bath within a range that is approximately half the range in which the bathtub is raised and lowered than the interval in which a conventional bathtub is raised and lowered, the cost for driving the bathtub can be reduced.

In addition, the height of the upper edge of the side wall of the raised bathtub is lower than that of conventional bathtubs, making it easier for nurses to assist patients while bathing in hot water without having to adopt an unreasonable posture. Not only can this be done, but the patient's head can be monitored without having to be particularly careful to prevent the patient's head from submerging in hot water. Moreover, according to the configuration of the present invention, the stretcher can be supported in a well-balanced manner on both sides by a pair of cross links on each side that are supported by pillars that penetrate the bottom wall of the bathtub. Application of an excessive bending moment load can be prevented, and the stretcher support mechanism can be made smaller and lighter. In addition, the cross links and struts that support the stretcher and move the stretcher up and down in the opposite direction in conjunction with the up and down movement of the bathtub are located below the stretcher, so there is no need for a stretcher support mechanism that is higher than the bathtub. Therefore, it is possible to reduce the size of the entire bathtub device in the height direction.

Therefore, it is possible to provide an elevating device for a stretcher frame attached to an elevating bathtub, which is small and lightweight, and allows easy operation of assisting a bathing patient.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway plan view of an embodiment of the present invention in which a lifting bathtub is equipped with a stretcher frame elevating device, Fig. 2 is a partially cutaway side view of Fig. 1, and Fig. 3 is a partially cutaway side view of Fig. 1. Figure 1 is a front view of the device connected to the transport vehicle, Figure 4 is an enlarged front view of the underframe lifting device, Figure 5 is a left side view of Figure 4, and Figure 6 is a bathtub connected to the rail provided in the housing. A cross-sectional view showing a state in which a bearing integrated with is installed, No. 7
This figure is a side view showing the interior of the bearing case shown in FIG. 6 with a portion cut away. 1... Bathtub, 4... Housing, 5... Drive mechanism, 1
9... Operating frame, 21... Bearing, 22... Rail, 28... Support column, 36... Underframe, 37... Underframe lifting device, 40... Support shaft, 41, 42, 43,
44... Link, 51, 52, 60, 62... Guide groove, 70... Transport vehicle.

Claims (1)

[Scope of utility model registration request] A column is erected that penetrates the bottom wall of the bathtub, which is raised and lowered by a drive mechanism, in a watertight and slidable manner, and a horizontal support shaft whose center portion is fixed to the upper end of the column has a pair of foldable cross links at both ends. The lower ends of each pair of cross links are slidably connected to guide grooves provided horizontally in the bottom wall of the bathtub, and the upper ends of each pair of cross links movably support a stretcher. When the bathtub is raised, the underframe lowers to the bottom wall of the bathtub, and when the bathtub is lowered, the underframe is slightly lower than the upper edge of the side wall of the bathtub. An elevating device for a stretcher frame attached to an elevating bathtub, which is characterized by being able to rise to a high position.