JP2000140062A - Portable hoisting/lowering apparatus for bathing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a portable hoisting/lowering apparatus for bathing which does not need any external power and can easily hoist and lower a person for taking a bath in a bathtub by an extremely small power, i.e., a power which a human hand possesses regardless of size of the wt. of the person for taking a bath and can safely and surely hold him at an arbitrary height in the bathtub and is inexpensive and can be easily used. SOLUTION: Hoisting/lowering is performed by a hand-operated driving device 33 wherein springs provided with tension controlling mechanisms are fitted at the apexes of links 1 and 2 constituting parallel cranks 9 and which is constituted of a female screw disposed on a shaft 4 connecting a link 1 connected with a male screw disposed on a link 2, i.e., a frame 7 and a gear 17, a belt or a chain 16 and a handle 20.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable bath elevator. More specifically, the present invention uses a bathing elevator for bathing a physically handicapped person, which can be easily attached to and detached from a bathtub, and can be connected to a power source for raising and lowering drive, that is, a power source, water pressure, hydraulic pressure, pneumatic pressure, and the like. The present invention relates to a portable bathing apparatus that can be easily moved up and down by hand without need.

[0002]

2. Description of the Related Art Although a number of bathing elevating devices for the physically handicapped have been proposed, fixed household items are difficult to accept structurally and economically in ordinary households. In addition, installation to bathtub,
Driving for raising and lowering even detachable so-called portable objects often requires connection with a water pressure source, connection with hydraulic and pneumatic pressure, and connection with a power supply, so construction is required for that. In addition to the troublesome handling, the danger of accidents due to earth leakage cannot be ignored.

For example, FIG. 9 shows an air bag (41) for driving a chair (40) and a pedestal (42). Therefore, compressed air is required as a power source. I have to drive. FIG.
No. 0 is composed of a chair (43) a parallel-crank support (44) and a hydraulic or hydraulic cylinder (45), so that hydraulic or hydraulic pressure is required as a power source. For this purpose, the pump must be operated by an electric motor. Must.

FIG. 11 is composed of a chair (46), a parallel crank type support (47) and a hydraulic bag (48), but also requires a separate power source as in the case of FIG.

[0005]

SUMMARY OF THE INVENTION 1) In view of such circumstances, the present invention does not require external power, and allows a bather to easily ascend and descend in a bathtub with minimal power, that is, power as much as a human hand can hold. Things that are possible.

[0006] 2) It is possible to easily raise and lower the bather in the bathtub with as little power as possible regardless of the weight of the bather.

[0007] 3) The bather can be held safely and securely at an arbitrary height in the bathtub.

[0008]

The present invention relates to a frame (7) having a backrest (11) and a seat (19) and a frame (8) having a suction cup (30) as shown in FIG. A link (1) with a central part connected by a shaft (3),
Link (1), with shaft (6) with (2) interposed
A parallel crank (9) is constructed in which one of (2) is fixed and the other is connected by a sliding piece (5) connected to a shaft (4) so as to be slidable, as shown in FIGS. At the positions of frames (7) and (8).
(8) and one shaft (4) with a spring (21),
(27), and tension of the spring (21) is applied to the female screw (22) with the spring holder, the male screw (23) and the handle (25) as shown in FIG.
And a male screw (12) screwed into a female screw (13) connected to one of the frame (7) and the shaft (4).
5) A mechanism provided with a manual driving device (33) capable of exerting human power by a handle (20) through a belt or chain (16) and a gear (17).

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to embodiments shown in the drawings.

FIG. 1 shows the bather (34) before and after bathing, that is, on the water surface of the bathtub (35), and FIG. 2 shows the bather (34) during bathing, that is, the bather (35). Things. What supports the weight of the bather (34) is a parallel crank (9) consisting of links (1), (2) and a shaft (3) interposed between the frames (7), (8) and the link (1).
And a spring (21) applied to the shaft (4) from the frames (7), (8), which generate a pushing force by pulling in the horizontal direction so as to close the tip of the link (2). (27).

To explain further, as shown in FIG. 1, a bather (34)
When the bather is on the water surface, it must support the entire weight. However, when the bather (34) is immersed in the bathtub (35) as shown in FIG. Since the weight is offset by the buoyancy, we focus on the fact that it is sufficient to support the weight after deducting a considerable amount. Therefore, according to the present invention, the weight obtained by subtracting the buoyancy generated in the bather (34) from the weight of the bather (34) before and after bathing in FIG. 1 and during and during the bathing in FIG. 21), (27) and a mechanism for generating an upward force by the parallel crank (9) is used to achieve balance.

More specifically, in FIG. 1 and FIG. 2, the links (1), (4), (3) and (6) constituting the shaft (4),
The angle (2) determines the magnitude of converting the tension of the springs (21) and (27) into an upward force. Link (1)
If the angle between (2) and (2) is small, the resultant force converted upward is large, and if the angle is large, the resultant force converted upward is small. Of course, the tension of the springs (21) and (27) decreases in proportion to the length of the springs (21) and (27) if the angle of the links (1) and (2) is small, because the length of the springs (21) and (27) is reduced. However, the upward resultant force is dominated by the angle formed by the links (1) and (2) formed by the axes (4), (3) and (6). By the way, if the angle mentioned above is 180 °, that is, a state similar to FIG. 2 in which the link (1) and the link (2) are horizontally overlapped, the tension of the springs (21) and (27) becomes maximum but is converted upward. The resultant force is theoretically zero.

As described above, the bather (34) in the state of FIG.
Spring (21), so as to balance the total weight of
Tension is applied to (27), and in the state of FIG.
By selecting the links (1) and (2) so as to balance the weight obtained by subtracting the buoyancy generated in the above, it is possible to move up and down by adding as little power as possible, that is, the power of the human hand. 1, 2 and 3 have a single parallel crank (9) for ease of explanation, but have two parallel links as shown in FIG. 8 to shorten the frames (7) and (8). It is also possible to reduce the size and weight, and to benefit from moving in and out of the bathtub and moving.

A spring tension adjusting device (32) will be described with reference to FIGS. 1, 4 and 5 in order to further reduce the power for raising and lowering the bather. The spring (27) is connected to the frame (8). The spring (21) is directly hung on the shaft (4) and fixed to the shaft (4), and the spring (21) is supported by the bearing (24) in the frame (7) and is connected to the male screw (23) connected to the revolving handle (25). And the spring holder are connected to the shaft (4) through the combination of the female screw (22).
Multiplied by As shown in FIGS. 6 and 7, an indicator needle (29) is attached to the female screw spring holder (22) together with an anti-rotation plate (28), while the frame (7) has a weight scale (31). Carved. The operation of the handle (25) allows the pointer (29) to coincide with the weight scale (31) corresponding to the weight of the bather (34), thereby easily adjusting the weight of the bather (34) to the spring (21).
The total tension according to (27) can be balanced. The number of springs shown in the figure is the spring (2
Although each of 1) and (27) has two lines, each may be one line or the number may be further increased.

Next, a manual driving device (33) which enables the bath to be raised and lowered with the power of a human hand will be described with reference to FIGS. A gear (15) is obtained by combining a male screw (12) with a gear (15) that can be turned by a bearing (14) of a frame (7) with a female screw (13) integrated with a shaft (4).
Is the frame (10) via the chain or belt (16)
The shaft gear (17) is provided with a bearing (18) on the handle (20).
It has. By rotating the handle (20), the sliding piece (5) connected to the shaft (4) with the shaft (6) as a fixed end reciprocates along the groove of the frame (7), and thus the parallel crank (9) The frame (7) moves up and down together with the seat (19) carrying the bather (34) and the backrest (11) according to the principle. One of the advantages of this structure is that the power transmission through the combination of the male screw (12) and the female screw (13) is a simple method, although the power transmission is simple.
Another advantage is that a very large thrust can be generated with a small rotating force applied to the handle (20), and the handle (20) can be formed on the handle (20) by appropriately selecting the screw gradient, that is, the feed length of the screw per rotation. The female screw (13) generated by the force acting downward on the frame (7) according to the weight of the bather (34), regardless of the weight of the bather (34), unless a rotational force is applied, causes the male screw (13). The male screw (12) does not rotate even by the action of the pulling force on the 12), and therefore has the function of an extremely safe brake device to ensure that the frame (7) stops at an arbitrary height. ing.

[0016]

The portable bath elevating device of the present invention can balance the gravity of the bather by subtracting the buoyancy generated by the bather from the weight of the bather by the combination of the parallel crank and the spring tension. Since the spring tension can be adjusted according to the weight of the bather, the bather can be moved up and down with extremely small power, that is, the power of a human hand. In addition, since the power transmission is of the screw type, a constant screw gradient is adopted, so that the bather can be safely and securely held at an arbitrary height without providing a separate brake.

[0017]

[Brief description of the drawings]

FIG. 1 shows a portable bathing apparatus according to an embodiment of the present invention before bathing;
It is a front view after.

FIG. 2 is a front view of the portable bathing apparatus shown in FIG. 1 during bathing.

FIG. 3 is a side view of the portable bathing apparatus shown in FIG. 1 before and after bathing.

FIG. 4 is a plan view of the present invention as viewed from a direction A in FIG. 1;

FIG. 5 is a plan view of the present invention as viewed from a direction B in FIG. 1;

FIG. 6 is an enlarged view of the tension adjusting device shown in FIG. 4 of the present invention.

FIG. 7 is a side view of FIG. 6 of the present invention.

FIG. 8 is a front view of a portable bathing apparatus according to an embodiment of the present invention, in which two parallel cranks (9) are provided.

FIG. 9 is a view showing a conventional bathing elevating device for a disabled person.

FIG. 10 is a view showing a conventional bathing elevating device for a physically handicapped person.

FIG. 11 is a view showing a conventional bathing elevating device for the handicapped.

[Explanation of symbols]

 (1) Link (2) Link (3) Shaft (4) Shaft (5) Sliding piece (6) Shaft (7) Frame (8) Frame (9) Parallel crank (10) Frame (11) Backrest (12) Male thread (13) Female thread (14) Bearing (15) Gear (16) Belt or chain (17) Gear with shaft (18) Bearing (19) Seat (20) Handle (21) Spring (22) With spring holder Female screw (23) Male screw (24) Bearing (25) Handle (26) Spring holder (27) Spring (28) Rotation prevention plate (29) Indicator needle (30) Sucker (31) Weight scale (32) Tension adjustment device (33) Manual drive unit (34) Bather (35) Bathtub (40) Chair (41) Air bag (42) Pedestal (43) Chair (44) Crank support (45) Hydraulic or hydraulic cylinder 46) chair (47) crank support base (48) water pressure bag

Claims (4)

[Claims] 1. A mechanism in which a spring for generating a horizontal tension is attached to a tip of a link constituting the parallel crank as a support for a backrest and a seat of a bather on a vertically extendable parallel crank. A portable bath elevating device that converts it into a pushing force. 2. The portable bathing elevating device according to claim 1, wherein the tension of the spring can be adjusted by operating a handle of a male screw connected to a female screw with a spring holder. 3. The portable bath elevating / lowering device according to claim 1, wherein a spring needle is attached to said spring holder, and a weight scale is provided on a side of said support base, whereby a spring tension can be easily adjusted to a bather's weight. apparatus. 4. A screw drive for driving a link constituting the parallel crank according to claim 1 to extend and retract, wherein one end of the link is used as a fixed-side bearing, and the other end is connected to a female screw at the other end through a male screw with a handle. A portable bath elevating device with a mechanism.