JPH0451786Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] This invention is particularly useful for easily converting the mattress that is placed on the mattress of a bed, especially when a patient with physical disabilities is lying down, into a new mattress. The present invention relates to a bed sheet changing device that can be replaced.

[Conventional technology]

Bedding becomes contaminated with use and must be replaced periodically to maintain cleanliness. Even healthy people and, for example, sick people, who can move their bodies on their own, usually replace it with their own hands.

However, in the case of a seriously ill person or a bedridden elderly person, it is not possible to change the bedclothes by hand, so multiple caregivers have to lift the seriously ill person or bedridden elderly person above the bed. In the meantime, other caregivers remove the old mattress, place a new one, and then place the seriously ill person or bedridden elderly person back to sleep on the new mattress. ing.

[The problem that the idea aims to solve]

Although it is essential to change the bed linen, in addition to the need for multiple caregivers as mentioned above, it is also necessary to lean the upper half of one's body onto the bed to help the seriously ill or bedridden elderly. Replacing the bedding was hard labor because it involved lifting, and the work conditions were extremely poor.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to solve the above-mentioned problems and to provide a sheet changing device that allows old and new sheets to be easily exchanged with a small number of people.

[Means for Solving the Problems] The main means adopted by the mattress changing device according to the present invention in order to solve the above-mentioned problems is that the mattress is laid on a mattress laid on the bed, and the front and back in the longitudinal direction are This is a mattress changing device that winds up a mattress connected by fasteners with a human body lying down, and spreads another mattress on the mattress, and the mattress is attached to the left and right cross beam members of the bed at the front and rear of the bed. A guide along the direction is provided, one guide is provided with a drive box guided by this, and the other guide is provided with a driven box guided by this, and the crawler track is hung on both boxes in a relaxed state. A plurality of flexible rotating shafts each having an outer layer made of an elastic material are removably installed at predetermined intervals, and one end of the sheet has a connecting portion with a fastener connecting the sheet. A flexible drive having a flexible free rotating shaft whose other end is connected to a connecting part provided on the outer periphery and wound around it, and a connecting part on the outer periphery that can be connected to the fastener of the bed being laid. A rotary shaft is detachably installed above the rotary shaft and parallel to the rotary shaft.

[Effect]

In the present invention, the structure of the bed sheet changing device is as described above, so first, the fastener of the bed sheet on the head side of the human body is removed, and another bed sheet, which is pre-wound around a free rotation shaft, is connected to the fastener part on the bed side. At the same time, the fastener part of the removed sheet is connected to a connecting part provided on the drive rotation shaft, and the drive box is operated to rotate the drive rotation shaft. If you do,
While the bed sheet being laid is wound around the driving rotation shaft, other sheets continue to be unwound due to the tensile force generated by this winding, and while the crawler track slides on the pine tress, both boxes are guided by guides and move around the human body. Move toward the feet. Each axis during movement is bent in response to changes in the unevenness of the human body, and the outer layer made of an elastic body is deformed, so that the pushing force against the human body is weakened. Furthermore, as the movement of both boxes progresses, the drive rotation shaft is wound with the sheet to be replaced, so its diameter becomes larger, and conversely, the free rotation shaft is unwound with another sheet that was previously wound. Although the diameter is small, both of these shafts press down on the top surface of the slackened track, so as the diameter increases, the amount of deflection of the drive rotating shaft increases, and as the diameter decreases, the amount of deflection of the free rotating shaft decreases. .

〔Example〕

An embodiment of the mattress changing device according to the present invention is shown in FIG. 1, which is a side view of a bed equipped with this mattress changing device, FIG. 2, which is a sectional view taken along the line - in FIG. This will be explained below with reference to FIG. 3, which is a sectional view.

That is, the symbol B shown in FIG. 1 indicates that the pine tress B ₂ is laid on top of the pine tress B ₂ , and the fasteners F provided near the front and rear ends of the pine tress B ₂ are placed on top of the pine tress B 2 . Although not shown in the drawing, this bed body B is a bed body on which a mattress B ₃ is laid with the ends connected, and a mattress B ₂ can be laid by rotating a handle or by electric power. A so-called back lifting device, leg lifting device, etc. are installed to bend the supporting frame.

Two approximately L-shaped rails are installed on each of the horizontal beam members _B1 on both sides of the bed body B in the longitudinal direction.
Guide rails G ₁ and G ₂ are disposed opposite to each other with the bent portions of the tips thereof protruding to opposite sides, and the bed main body B is reciprocated in the longitudinal direction by these guide rails G ₁ and G ₂ . The cloth changing device 1 was freely supported.

The details of this bed changing device 1 are as shown in FIGS. 2 and 3. One guide rail _G1 has a drive box 2 guided by it, and the other guide rail G2 has a drive box ₂ guided by this. Each of the driven boxes 2a guided by the guide rails G ₁ ,
_G2 was removably supported via rollers 3 rolling on the surface of each rail. In other words, since the bent portions of the two rails play the role of preventing the boxes 2 and 2a from coming off, on the other hand, the two rails should be oriented with the bent portions facing opposite sides. They may be installed in pairs. An electric motor M with a speed reducer is attached to the drive box 2, and the drive of the motor M is stopped by operating a switch S.

Although not shown in the drawings, inside the drive box 2, a driving force transmission gear made of synthetic resin is incorporated to prevent noise during meshing and to prevent contamination due to lubrication. Also, both boxes 2 and 2a
With this, three flexible rotating shafts 4 made of synthetic resin having an outer layer 4a made of foamed urethane rubber on the outside in the radial direction are removably supported at predetermined intervals, and these shafts are A crawler track 5 made of a thick woven fabric whose surface has been treated with Teflon to reduce the coefficient of friction was loosely hung so that it spanned the pine tress B ₂ and its lower part was in contact with the pine tress B 2 .

Next, a flexible synthetic resin sheet is wound around another new sheet to be replaced, which has a connection part with the fastener F that connects one end side of the sheet B ₃ to be replaced around its longitudinal outer circumference. A flexible synthetic resin having a free rotation shaft 6 and a connecting portion that can be connected to a fastener of a sheet B ₃ to be replaced, which is laid on the outer periphery in the longitudinal direction at a predetermined distance from the free rotation shaft 6. The drive rotation shaft 7 made of
The structure is such that the crawler belt 5 is detachably supported so as to be parallel to the upper surface of the crawler belt 5 and to be able to roll into contact with the slack portion on the upper surface side of the crawler belt 5. Note that the attachment/detachment mechanism (not shown) for attaching and detaching the rotating shaft 4, free rotating shaft 6, and drive rotating shaft 7 to both boxes 2, 2a, respectively, inserts the tip of each shaft into the mounting hole, and The structure is such that each shaft can be attached or removed by tightening or loosening a cap-shaped cap nut placed on each end of each shaft.

Hereinafter, to explain how to use the bed changing device 1 configured as described above, first, the fastener F of the bed on the head side of a human body (not shown) is removed, and the bed main body B is
Connect the connecting part of another new bed sheet that has been previously wound around the free rotation shaft 6 to the fastener F on the side, and connect the fastener part of the removed bed sheet B ₃ to be replaced to the drive rotation shaft 7. Connect to.

Next, when the switch S is pressed and the drive box 2 is operated, the drive rotation shaft 7 begins to rotate.

Then, while the sheet B ₃ to be replaced is wound up on this drive rotation shaft 7, another new sheet continues to be unwound from the free rotation shaft 6 due to the tensile force generated by this winding, and the crawler belt 5 While sliding on the top surface of ₂ , both boxes 2 and 2a are guided by the guide rail.
Guided by G ₁ and G ₂ , it moves silently in synchronization with the direction of the human foot.

During the movement of such bed changing device 1,
The free rotation shaft 6 and the drive rotation shaft 7 flex in response to changes in the unevenness of the human body, and further 3 in response to this flexure.
Since the outer layer 4a of the rotating shaft 4 of the book is deformed, the pushing force on the human body is weakened, and the negative effects such as pain on the human body are alleviated.

Furthermore, regarding the progress of the movement of both boxes 2 and 2a, the diameter of the sheet B 3 to be replaced becomes larger as the sheet B ₃ to be replaced is wound around the drive rotation shaft 7, and conversely, the free rotation shaft 6 has a large diameter. As the new bed sheet is rewound, the diameter becomes small, but since both shafts 6 and 7 press down on the upper surface of the crawler track 5, which is hung in a relaxed state, as the diameter increases, the drive rotation shaft becomes smaller. The amount of deflection of shaft 7 increases, and as the diameter becomes smaller, the amount of deflection of free rotation shaft 6 decreases. Therefore, the adverse effects on the human body are alleviated even if it is contaminated.

According to the test results, the winding speed of the sheet B ₃ by the drive rotating shaft 7 is preferably about 2 m/min, and therefore, a small electric motor M is sufficient.

In this way, when the work of exchanging the old and new sheets is completed, this sheet changing device 1 moves the guide rail G ₁ ,
Since it is removed from G ₂ , it will no longer pose any hindrance to physically disabled people, caregivers, etc., or to doctors, etc., carrying out examinations and treatments.

In this way, it is now possible to easily change the bed sheet by simply operating the switch S without having to bother many caregivers.

In the above-described embodiment, each shaft is made of a flexible resin material, but the shaft may have a flexible structure having a plurality of joints.

Further, although the electric motor M is used to drive the drive box 2, the same effects as in the above-mentioned embodiment can be obtained even if the drive box is provided with a detachable handle and the drive box is moved by rotating the handle. can be obtained.

The above-mentioned embodiment is only one specific example of the present invention, and therefore, the scope of the technical idea of the present invention is not limited by this embodiment, and moreover, the scope of the technical idea of the present invention is not limited to this embodiment. Design changes etc. can be made freely.

[Effect of idea]

According to the sheet changing device of the present invention, by simply operating the drive box, the sheet to be replaced is wound up, and other sheets are unwound and laid, and each sheet changes according to changes in the unevenness of the human body. Not only does the shaft flex, but the outer layer of the rotating shaft on which the crawler belt is attached is deformed, and the drive rotating shaft, which has a larger diameter due to the wrapping of the bedding that needs to be replaced, becomes more deflected. ,
On the other hand, the amount of deflection of the freely rotating shafts, which have become smaller in diameter due to the unwinding of other bed sheets, is reduced, and the height of the top surface of these shafts continues to be maintained at the same level, causing pain for patients etc. when changing bed sheets. It is possible to significantly reduce the negative effects of

Since the bed sheet can be easily replaced in this way, it not only reduces the labor required for replacement work, but also reduces the financial burden on the patient and other relatives, resulting in labor-saving and economic benefits. The effect is extremely large.

Therefore, with the present invention, it has been possible to realize an extremely excellent and useful sheet changing device that allows old and new sheets to be easily exchanged with a small number of people.

[Brief explanation of the drawing]

1 to 3 each show an embodiment of the present invention, in which FIG. 1 is a front view of a bed equipped with a bed changing device, FIG. 2 is a cross-sectional view taken along the - line in FIG. 1, and FIG. 2 is a sectional view taken along the - line in FIG. 2. B...Bed body, _B1 ...Bed cross beam member,
B ₂ ... Pine tress, B ₃ ... Mattress, F ... Fastener, G ₁ , G ₂ ... Guide rail, M ... Electric motor,
S...Switch, 1...Padding exchange device, 2...Drive box, 2a...Driver box, 3...Roller, 4...Rotating shaft, 4a...Outer layer, 5...Crawler track,
6... Free rotation axis, 7... Drive rotation axis.

Claims (1)

[Scope of utility model registration request] Bed replacement: Roll up the bedding that is laid on the pine mattress laid on the bed and connected at the front and back in the longitudinal direction by fasteners while the human body is lying down, and then spread another mattress on the pine mattress. The device is provided with guides along the longitudinal direction of the bed on the left and right cross beam members of the bed, one guide has a drive box guided by the drive box, and the other guide has a driven box guided by the drive box. A plurality of flexible rotary shafts each having an outer layer made of an elastic material, on which crawler tracks are hung in a relaxed state, are removably installed at predetermined intervals in both boxes, and one end The other end of the other sheet has a connecting portion with a fastener that connects the sheet to the outer circumferential portion of the sheet, and the other end of the sheet is connected to a connecting portion provided on the outer periphery and is wound around a flexible free rotating shaft, and 1. A bed sheet changing device comprising: a flexible drive rotating shaft having a connecting portion on its outer periphery that can be connected to a fastener; and above the rotating shaft and parallel to the rotating shaft, detachably installed therein.