JP3182043B2 - bed - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an up-and-down bed suitable for nursing a sick or elderly person, and more particularly to a bed having an improved mat support structure in the upright state.

[0002]

2. Description of the Related Art Conventionally, various types of undulating beds suitable for nursing the sick and elderly have been used. The up-and-down bed is configured such that the backrest can be raised so that, for example, the sick person can be in a sleeping state or in an upright state. An example of such an undulating bed is shown in schematic side view in FIG.

In the bed 1, a mat 3 is placed on a support frame 2. The mat 3 is supported by the support frame 2. On the other hand, the support frame 2 is fixed to the upper ends of the legs 4 and 5, and is fixed at a fixed height from the floor.

The back frame 6 is rotatably attached to the support frame 2 via pins 7. Back up part 6
When the patient is lying down, it is extended in the horizontal direction similarly to the support frame 2, and the pin 7 is moved to the position shown by the two-dot chain line in FIG. Is rotated around. As a result, the mat 3 is bent above the pins 7, and the back portion 3a of the mat 3
Is supported by the back up portion 6. Therefore, the back of the patient is supported by the backrest 3a of the mat 3, and the patient can relax.

[0005]

By the way, in the conventional up-and-down bed 1, the mat 3
However, there is a problem that the gap tends to shift. In the back-up state, the mat 3 is only supported by the support frame 2 and the back-up portion 6 inclined at a predetermined angle with respect to the support frame 2. The mat 3 sinks downward at the corners. That is, the mat 3 is pushed into the corner portion side indicated by the arrow B in FIG. 9 by the force applied to the corner portion. As a result, a space is formed between the body surface of the patient and the corner portion of the mat 3. That is, in the back-up state, it is difficult for the mat 3 to be uniformly contacted with the patient's body surface. In particular, the patient's body is not securely supported at the corners, and the patient's waist is greatly bent. Tended to add pressure to the abdomen. When such a feeling of oppression is felt, the position of the body may be shifted, but such movement of the body is not easy for a sick person or a bedridden elderly person.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an up-and-down bed in which a mat is unlikely to be displaced when shifting to a back-up state, and in which a feeling of pressure on an abdomen or the like in a back-up state can be reduced. .

[0007]

SUMMARY OF THE INVENTION The present invention is directed to a sleeping state,
This is an up-and-down bed capable of taking a back-up state, and has the following configuration.

[0008] That is, the bed of the present invention includes a mat configured to be bendable and a frame supporting the mat. The frame has a frame main body, a back-up portion rotatably connected to the frame main body, and a seat support portion connected to the back-up portion. The back rising part and the seat supporting part are extended in the horizontal direction when lying down,
In the back-up state, the back-up section is rotated with respect to the frame main body so that the upper end is located above the frame main body, and the lower end is located below the frame main body. Is connected to the lower end side in the back-up state with respect to the center of rotation of the back-up section with respect to the frame body.

Further, the bed of the present invention is provided with a mat support sheet made of a bendable material having a fixed length. The mat support sheet is connected between a position on the tip side of the back-raised portion with respect to the center of rotation of the back-raised portion with respect to the frame body and the seat surface supporting portion. The mat support sheet extends in the lying state in parallel with the direction in which the frame body extends, while in the upright state, the mat support sheet is higher than the inner corner formed by the back up portion and the seat surface support portion. Is provided to support the mat.

Further, in the bed of the present invention, the seat support portion, the length of the spine occurs side portion than the position where the mat support sheet are connected are variable, in the back occurs state, the The length of the seat support portion is extended, so that the mat can be reliably supported by the mat support sheet above the corner portion at the inner corner in the upright position.

The mat support sheet may be made of any suitable material as long as the mat can be supported above the inner corner formed by the raised portion and the seat support.
The mat support sheet is preferably made of a rigid material such as a thin metal plate, since the above-mentioned corner portions are considerably weighted.

Further, the mat of the present invention is a mat used for an up-and-down bed, and is characterized in that a hard layer harder than the remaining layers is provided on the upper surface side. In the mat of the present invention, the hard layer is provided on the upper surface side,
The lower surface is softer than the hard material. Therefore, in the upright state, the lower side that deforms more greatly deforms smoothly, while the upper side is provided with a hard layer that is relatively harder than the remaining layers. As a result, misalignment of the mat in the upright state is reliably prevented. Therefore, in the mat of the present invention, the displacement in the back-up state can be effectively prevented, and thus, similarly to the bed of the present invention described above, the feeling of pressure in the back-up state can be effectively alleviated.

That is, the undulating bed and the mat of the present invention are common in solving the above problems.

[0014]

In the bed of the present invention, the back-up portion is rotatably connected to the frame main body. In the back-up state, the mat is bent by rotating the frame main body to realize the back-up state. You. That is, it is possible to take a lying state and a back-up state, as in the case of the conventional up-and-down bed.

Further, in the bed according to the present invention, the bendable mat support sheet having a fixed length is provided at a position on the distal end side of the back-raised portion with respect to the center of rotation of the back-raised portion with respect to the frame body, and a seat-surface supporting portion. Is connected between The mat support sheet is provided so as to support the mat above an inner corner formed by the back-raising portion and the seat portion in the back-raising state. The mat is supported by the mat support sheet above the inner angle formed by the and the frame body,
Therefore, an undesired space is hardly generated between the surface of the human body and the mat. That is, since the mat is supported by the mat support sheet along the human body surface in the back-up state, the waist is unlikely to be displaced when rising.
Therefore, the feeling of pressure on the waist and abdomen can be reduced.

[0016]

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be clarified by describing embodiments with reference to the drawings.

FIG. 1 is a perspective view for explaining a bed according to an embodiment of the present invention. The bed 11 has a frame 12 and a mat 13 supported by the frame 12. The frame 12 has legs 14,
15 is fixed to the upper end. Thereby, the frame 12 is fixed at a certain height from the floor.

In the bed 11 of this embodiment, the mat 13
Has a back portion 13a, a seat portion 13b, and a leg portion 13c. In the bed 11 of the present embodiment, the mat 1
3 is horizontally extended, that is, lying down,
As shown in the figure, the backrest portion 13a is configured to be in a back-raised state in which the backrest portion 13a is raised.

The details of the structure for realizing the above-mentioned upright state are as follows.
This will be described in more detail with reference to FIGS. FIG. 2 is a perspective view schematically showing the relationship between the frame 12 and the mat 13. In the upright position, the mat 13 is deformed as shown. That is, the backrest 13a is raised, and the connecting portion between the seat portion 13b and the leg supporting portion 13c is deformed into a slightly raised shape. The structure that allows such deformation is not shown in FIG. 2 because it is located below the mat 3.

A mechanism that allows the mat 13 to be deformed will be described with reference to FIGS. Referring to FIG. 3, frame 12 is provided with frame body 12a so as to extend in the horizontal direction. This frame body 12
The back-raising portion 1 is rotatable about the pin 16 with respect to a.
7 are connected. As is clear from FIG. 4, the back-raising portion 17 is formed of a tubular member, and has a pair of right and left sides. The left and right raised portions 17 are connected by a pipe 18.

On the other hand, a seat surface support 19 is located at a lower end of the back raising portion 17. The seat support 19 has an elongated rod 19a and a holder 19b. Holder 19b
Are rotatably connected to the raised portion 17 about the pin 20. In addition, the seat surface support portion 19 includes the pin 2
In the vicinity of 0, the length can be changed. That is, the seat surface support portion 19 includes the rod 19a,
A holder 19b is provided on the rod 19a on the pin 20 side of the rod 19a. The holder 19b has an elongated hole 19c extending in the length direction. On the other hand, the rod 19a is formed with a projection 19d large enough to enter the elongated hole 19c. Therefore, the holder 19b and the rod 19a are configured to be able to relatively move by the movement of the projection 19d in the elongated hole 19c, whereby the entire length of the seating surface support portion 19 can be expanded and contracted. It is configured as follows.

It should be noted that the seat surface support portion 19 is also
Like FIG. 7, as shown in FIG. The front side of each seat surface support 19 is rotatably connected to a leg support 22 via a pin 21. Further, the distal end side of the leg support portion 22 is rotatably connected to the foot support portion 23 via a pin 24. The left and right foot support portions 23 are connected by a rod 26b.
A projection 25 is provided on the foot support 23 so as to protrude outward. On the other hand, a long hole 12 c extending in the front-rear direction is formed in the frame body 12. The projection 25 is projected into the elongated hole 12c, and therefore the foot support 23
Is configured to be able to move in the arrow X direction of FIG.

Further, as shown in FIG.
A support rod 26a having a roller externally extended so as to extend in the left-right direction is fixed to 2a. This support rod 2
6a is provided to prevent the seat surface support portion 19 from dropping downward, that is, to support the seat surface support portion 19.

In the undulating bed according to the present embodiment, as shown clearly in FIG.
A mat support sheet 27 is connected between the seat support 19 and the rod 19a. The mat support sheet 27 is made of a thin metal plate in this embodiment, but may be made of another material such as cloth as long as it has a constant length and can be bent.

The mat support sheet 27 is fixed to the raised portion 17 above the pins 16. Further, the lower end of the mat support sheet 27 is fixed to an appropriate position of the seat support 19. However, the appropriate position is such that the mat support sheet 27 is
The mat 13 is appropriately determined so as to be able to support the mat 13 above an inner angle C formed by the seat 7 and the seat surface support portion 19.

The undulating bed of this embodiment is characterized in that the mat support sheet 27 is provided. The operation of the mat support sheet 27 will be described with reference to FIG. First, in a lying state, the back rising portion 17 is extended in the horizontal direction. That is, the back raising portion 17, the seat surface supporting portion 19, the leg portion supporting portion 22, and the like are arranged so as to extend in the horizontal direction. Therefore, the mat 13 is horizontally extended on the frame body 12a. Supported by.

On the other hand, the back-raising portion 17 is raised to make the back-raising state. That is, the raised portion 17 is
5 is rotated as shown by a dashed line in FIG.
The lower end 1 of the back-raised portion 17 is caused by the rotation of the back-raised portion 17.
7a moves downward, and accordingly, the rear end of the seat surface support portion 19 is also pulled obliquely rearward and downward. as a result,
The rod 19a is extended from the holder 19b shown in FIG. 4, and the length of the seat surface support portion 19 is increased. As a result, the mat support sheet 27 having a constant length is curved upward by an inner corner portion formed by the back rising portion 17 and the seat surface support portion 19. Therefore, as shown in FIG. 3, the mat 13 is supported so as to have an arcuate curved surface at a connecting portion between the backrest 13a and the seat 13b.

As a result, the back raising portion 17 and the seat surface supporting portion 19
A space Y is formed between the inner corner portion of the above and the mat support sheet 27. Therefore, as shown in FIG. 6, even when the weight of the person is increased, the corner portion 13e of the mat 13 is supported by the mat support sheet 27, so that the mat 13 is hardly displaced when getting up. Further, even if the weight of the person is added, the mat 13 is supported by the mat support sheet 27 at the corner portion, so that the person's waist does not fall and the abdomen is not pressed.

As described above, the undulating bed 1 of this embodiment is
1, since the mat support sheet 27 is connected between the back-raising portion 17 and the seat-surface supporting portion 19 as described above, the mat 13 is used for shifting from the lying state to the back-raising state.
Can be prevented, and the corner 13 of the mat 13 can be reliably prevented from dropping in the upright state.

In the bet 11 of the above embodiment, in order to make the length of the seat support 19 variable,
Is constituted by the rod 19a and the holder 19b, but the structure in which the length of the seat surface support portion 19 is variable is not limited to this. That is, such as a long member formed in a nested shape, it can relatively move in the length direction.
Generally, a structure that can be shortened and extended by combining two members can be adopted.

Further, a cylindrical member may be used instead of the rod 19a. Further, the back raising portion 17 is not limited to the one in which the pair of pipes are connected by the connecting rod as described above, and may be configured by an appropriate structure as long as the back portion 13a of the mat 13 can be supported, such as a flat member. can do.

In order to smoothly deform the mat 13 as described above and to reliably prevent the mat from being displaced, it is preferable to use the mat 13 having a small thickness. Alternatively, a mat of the present invention having a hard layer on the surface side, such as a mat described below, is preferably used.

FIG. 7 is a sectional view showing an example of the mat of the present invention. The mat 31 is made of a material having an appropriate flexibility conventionally used for the mat such as a sponge, but has a relatively hard layer 31a on the surface side, and the remaining layer 31b has It is softer than the hard layer 31a. In this mat 31, for example, as shown in FIG. 8, when the hard layer 31 a is bent with the inner side facing the inside, distortion in the tensile direction is applied to the outer portion D at the corner portion. However, since the layer 31b is relatively soft, it can easily follow this deformation. On the other hand, in the inner portion E, contraction stress is applied to the hard layer 31a, but since the hard layer 31a is relatively hard, the amount of contraction is small.
The displacement of the mat 13 can be reduced. Therefore, the mat 31 of this embodiment can be suitably used for the bed 11 of the above-described embodiment.

[0035]

According to the bed of the present invention, the back-raised portion is rotatably connected to the frame main body. By shifting the frame main body to the back-raised state, it is possible to switch between the lying state and the back-raised state. Is possible.
Moreover, the bendable mat support sheet having a fixed length is connected between the back-raising portion and the seating surface supporting portion, and the mat supporting sheet allows the back-raising portion to be seated in the back-raising state. The mat is supported above a corner portion of an inner corner formed by the portion. Therefore, it is possible to alleviate the bending of the mat above the corner portion of the inner corner in the back-up state, and thus it is possible to prevent the mat from being displaced when shifting from the lying state to the back-up state, and It becomes possible to effectively reduce the feeling of pressure on the waist and abdomen of a person.

[0036]

[Brief description of the drawings]

FIG. 1 is a perspective view showing a bed according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a relationship between a mat and a frame in a back-up state.

FIG. 3 is a side view showing a relationship between a mat and a back-up portion and a seat-surface support portion in a back-up state.

FIG. 4 is a perspective view for explaining a back-raising portion and a seat-surface supporting portion in a back-raising state.

FIG. 5 is a partially cutaway side view for explaining the structures of the back-raising portion and the seat-surface supporting portion in a lying state and a back-raising state.

FIG. 6 is a side view for explaining the relationship between the mat and the main body in a back-up state.

FIG. 7 is a side sectional view showing a mat as an embodiment of the present invention.

FIG. 8 is a sectional view showing a state in which the mat shown in FIG. 7 is bent.

FIG. 9 is a schematic side view for explaining a conventional up-and-down bed.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 ... Bed 12 ... Frame 12a ... Frame main body 13 ... Mat 13a ... Backrest part 13b ... Seat part 13c ... Leg 16 ... Pin as a rotation center of a back rising part 17 ... Back rising part 19 ... Seat surface support part 27 ... Mat Support sheet 31 Mat 31a Hard layer 31b Remaining layer

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int. Cl. ⁷ , DB name) A47C 20/08 A61G 7/015

Claims (2)

(57) [Claims] 1. An up-and-down type bed capable of taking a lying state and a back-raised state in which a portion abutting on the back of the mat is raised, wherein the mat is configured to be bendable. A frame that supports the mat, the frame includes a frame body, a back-up portion rotatably connected to the frame body, and a seat support portion connected to the back-up portion, The back-raising portion and the seat-surface supporting portion are horizontally extended when lying down, and in the back-raising state, the back-raising portion is rotated with respect to the frame body so that the upper end is above the frame body, The lower end is configured to be positioned lower than a frame main body, and the seating surface support portion is connected to a lower end side in a back-up state with respect to a center of rotation of the back-raising portion with respect to the frame body, Wake up frame It is connected between the position of the tip of the raised portion with respect to the center of rotation with respect to the main body and the seat support portion, and in a lying state, extends in a direction parallel to the direction in which the frame main body extends. In the back-up state, a bendable mat support sheet having a fixed length, which is provided to support the mat above an inner corner formed by the back-up section and the seating surface support section, is further provided. The mat support sheet of the seat support portion is connected
The length of the part on the side of the raised part is variable from the position
And the length of the seat support portion in the back-up state
But it characterized the Rukoto been extended, bed. 2. The bed according to claim 1, wherein the mat support sheet is made of a thin metal plate.