JPH084548B2 - Bottom structure in bed - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bottom structure for a bed in which the bottom is configured to be bendable with an appropriate curvature so that the bottom is not unreasonably raised.

[0002]

2. Description of the Related Art Recently, many beds have a bottom undulation mechanism, and various mechanisms have been adopted.

[0003]

By the way, an ordinary bed is one in which a back bottom and a waist bottom or a waist bottom and a leg bottom are simply connected to each other, and the connecting portion here is used to rotate the back bottom. A fulcrum, that is, an actual fulcrum, is used to perform an undulating motion, and the connecting portion between the waist bottom and the leg bottom is used as a bending point to perform the undulating motion. Therefore,
When the back bottom gets up to a certain angle, the space near the connection between the back bottom and the waist bottom becomes narrower. , The back of the leg will be under pressure from the mattress. The present invention has been made in order to solve such a problem, and is configured such that the bottom can be bent so as to form an appropriate radius of curvature to make the bent portion of the bottom gentle and to bend. An object of the present invention is to provide a bottom structure in a bed that secures a space at a location and suppresses a feeling of pressure.

[0004]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a bed having an undulating mechanism for the bottom, in which a bending bottom having flexibility is arranged at a bending portion of the bottom, and the bending bottom is provided. The bottom is characterized by being constituted by a plurality of strip-shaped rigid body portions and a bent portion which can expand and contract in the bed longitudinal direction between these rigid body portions. In the above-described bent portion, the length of the surface of the bottom that faces the inside of the bend in the bed longitudinal direction is made smaller than the length of the surface that faces the outside of the bend in the bed longitudinal direction, and both surfaces are It can be configured to be foldable toward the inside of the bent portion. Further, end caps are respectively locked to the end faces in the bed width direction of the rigid portion of the bent bottom so as to shield the end faces, and the end faces of the bent parts are shielded so as to be overlapped by the adjacent end caps. Is characterized by.

[0005]

Operation When the bottom is raised, in the bent bottom, the bent parts between the rigid parts have both surfaces folded inward and extending in the longitudinal direction of the bed. At this time, the bent bottom is
Since the length of the bed in the longitudinal direction of the bed is set to be shorter than the surface of the bent portion facing the inner side of the bend compared to the surface on the outer side of the bend, the bent portion is bent so as to draw a gentle curve. By the way, the bed width direction end surface of the rigid body part is
By locking each of them and covering the end faces of the bent parts so that they overlap with the adjacent end caps, it is possible to deal with the deformation of the bent parts and to constantly shield the end faces of the rigid part and the bent parts. , There is no risk of accidentally pinching fingers or objects.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a bottom structure of a bed according to the present invention will be described below with reference to the accompanying drawings with reference to an embodiment. FIG. 1 shows a bed 1 to which a bottom structure according to the present invention is applied. The bed 1 has a function of raising the back by, for example, an electric starting unit 3 arranged below the bottom 2, and includes a back raising arm 4 for raising the back. The back raising arm 4 is in contact with the lower surface of the bottom 2 corresponding to the back via a roller 5.

In the bed 1, a flexible bending bottom 6 is arranged at a position corresponding to the bending position between the back and the waist of the bottom 2, and the bending bottom 6 has a plurality of strip shapes. It is configured by a rigid body portion 7 and a bent portion 8 that can expand and contract in the bed longitudinal direction between the rigid body portions 7 (see FIG. 2). The rigid body portion 7 is a hollow body made of synthetic resin by extrusion molding, and the bent portion 8 is also a hollow body, which are integrally configured (see FIG. 3). The bent portion 8 is a surface 9 that faces the inside of the bent portion of the bottom 2.
The length in the bed longitudinal direction of the
By making it smaller than the length of the bed in the longitudinal direction of the bed, and forming the connecting portion between the intermediate portion of both surfaces 9 and 10 and the rigid body portion 7 to be thinner than other portions. ,
It is configured such that it can be folded inward around the middle portion of both surfaces 9 and 10 (see FIG. 4). In addition, the bending bottom 6 is obtained by separately molding the rigid portion 7 and the bending portion 8,
A structure in which the rigid body portion 7 is connected by a bent portion 8 so as to surround the rigid body portion 7 may be used (see FIGS. 5 and 6).

In the bed 1 to which the bottom structure having the above-mentioned structure is applied, when the bottom 2 is raised, the bent portions 8 between the rigid body portions 7 in the bent bottom 6 are folded inward on both sides. The intermediate portions of 9 and 10 are deformed so as to be exposed to the outside and extend in the bed longitudinal direction. At this time, in the bending bottom 6, the length of the inner surface 9 of the bending in the bed longitudinal direction is set shorter than that of the outer surface 10 of the bending, so that the bending bottom 6 has an appropriate curvature and a gentle curve. And bend (see FIGS. 1 and 2). In this way, when the bottom 2 is raised, the bent bottom 6 bends in a gentle curved state, so that the waist and abdomen, which are the bent portions, are not pressed by the mattress.
In addition, since the bending bottom 6 has the rigid portion 7 and the bending portion 8 integrally formed, there is no problem in strength, the weight is light, and the manufacturing process is simple, so that the manufacturing cost is suppressed. be able to. Further, the curvature of the bent bottom 6, that is, the bending method, can be adjusted by considering the dimensions of both surfaces 9 and 10. Further, when the rigid portion 7 and the bent portion 8 are formed separately, respectively, in the case of damage, only the damaged portion can be replaced and waste can be suppressed.

The bottom structure of the bed according to the present invention can be implemented by the following structure. That is, in this embodiment, the bent bottom 21 of the bottom 20 is formed by separately molding the rigid portion 22 and the bent portion 23, and the convex portion 24 of the rigid portion 22 and the concave portion 2 of the bent portion 23 are formed.
5 and 5 are connected alternately in sequence (see FIGS. 7 and 8). The rigid body portion 22 and the bent portion 23 are hollow molded bodies, and the bent portion 23 has the two surfaces 26 and 27 in the same manner as in the above-described embodiment, and the connecting portion between the intermediate portion and the recess 25 is the other portion. It is thinner and can be folded inward. The surfaces 26, 27 have a length in the bed longitudinal direction,
The inner side of the bend is set to be shorter and the outer side is set to be longer, and the body is bent with an appropriate curvature.

Further, the bent bottom 2 having the above-mentioned structure
1, the end caps 28 are respectively locked to the end faces of the rigid body portion 22 in the bed width direction so as to shield the end faces, and the end faces of the bent portions 23 are adjacent to each other.
It is possible to adopt a configuration in which the light is shielded so as to overlap with each other (see FIG. 9). The end cap 28 has a shielding plate 29 having a width corresponding to the bottom thickness of the bent bottom 21, and has a pair of locking hooks 30 for locking the end surface of the rigid portion 22 and a positioning member 31. are doing. Further, in the shielding plate 29, a step is formed between a portion 29a provided with the locking hook 30 and the positioning member 31 and a portion 29b not provided, and a portion 29 not provided.
The portion 29a where the locking hook 30 and the positioning member 31 of the shield plate 29 of the adjacent end cap 28 are provided on b is configured to overlap (FIG. 10, FIG. 11, FIG. 12).
reference). When the bent portion 23 is contracted in the longitudinal direction of the bed, that is, when the bent bottom 21 is flat, the portion 29a provided with the locking hook 30 and the positioning member 31 and the portion 29b not provided are exactly aligned. It is a structure which overlaps (refer FIG. 13, FIG. 14).

In such a structure, when the bottom 20 is raised, the surfaces 26 and 27 of the bent portion 23 linearly extend, so that the spaces between the rigid portions 22 expand and the end caps accordingly. Although the overlapping portions of the shielding plate 29 in 28 slide, the end portions of the bent portions 23 are exposed because the overlapping portion of the shielding plate 29 remains even when the bending bottom 21 is bent at maximum. Therefore, it is possible to prevent foreign matter from entering or pinching a finger from the end surface of the bent bottom 21.
High safety (see FIG. 15).

[0012]

As described above, according to the present invention, since the bent bottom configured so that it can be bent with an appropriate curvature is adopted at the bent portion of the bottom, there is no feeling of pressure when the floor is undulated. Can be the bottom. Since the bent bottom is manufactured by extrusion molding, the process is simple and the manufacturing cost can be suppressed. Since the bent bottom is made of synthetic resin and is a hollow body, it is possible to reduce the weight. Since the bent portions are configured such that the surfaces of the upper surface and the lower surface are bent inward at their respective middle portions, fingers and foreign matter are not pinched. By changing the width of the surface of the upper surface and the lower surface of the bent portion, it can be bent with an appropriate curvature. If the structure is divided into two members, only the damaged part can be replaced, and waste can be eliminated.

[0013]

[Brief description of drawings]

FIG. 1 is a side view illustrating the essential parts of an embodiment of a bed to which a bottom structure according to the present invention is applied.

FIG. 2 is an enlarged sectional view showing an example of a bent bottom at a bent portion of the bottom shown in FIG.

3 is an external perspective view of the bent bottom shown in FIG.

FIG. 4 is an enlarged sectional view showing a flat state of the bent bottom shown in FIG.

5 is an enlarged cross-sectional view showing an example in which the bent bottom shown in FIG. 2 is formed by two members.

6 is an enlarged sectional view showing a flat state of the bent bottom shown in FIG.

FIG. 7 is an enlarged sectional front view showing another example of the bent bottom at the bent portion of the bottom.

FIG. 8 is an enlarged sectional view showing a flat state of the bent bottom shown in FIG.

9 is a perspective explanatory view showing an end cap attached to an end face in the bed width direction of the bent bottom shown in FIG. 7 and a mounting structure of the end cap.

FIG. 10 is a side view illustrating an end cap.

FIG. 11 is an explanatory plan view of an end cap.

FIG. 12 is another side view illustrating the end cap.

FIG. 13 is an enlarged sectional front view showing a flat state of a bent bottom with an end cap attached.

FIG. 14 is a side view of the main part showing the mounted state of the end cap in a flat state of the bent bottom.

FIG. 15 is an enlarged sectional view for explaining the action of the end cap when the bent bottom is bent.

[Explanation of symbols]

 1 Bed 2, 20 Bottom 3 Starting unit 4 Back raising arm 5 Roller 6, 21 Bending bottom 7, 22 Rigid part 8, 23 Bending part 9, 10 Face 24 Convex part 25 Recessed part 26, 27 Face 28 End cap 29 Shield plate 30 Locking hook 31 Positioning member

Claims (3)

[Claims] 1. A bed having an undulating mechanism for a bottom, wherein a flexible bending bottom is arranged at a bending portion of the bottom, and the bending bottom has a plurality of strip-shaped rigid portions,
A bottom structure in a bed, characterized in that it is configured by a bent portion that can expand and contract in the bed longitudinal direction between these rigid body portions. 2. The bending portion according to claim 1, wherein the length of the surface of the bottom facing the bending inner side in the longitudinal direction of the bed is
A bottom structure in a bed, which is smaller than the length of the surface facing the outside of the bend in the longitudinal direction of the bed, and both of these faces are foldable toward the inside of the bend. 3. The end caps are respectively locked to the end faces in the bed width direction of the rigid body portion of the bent bottom according to claim 1 or 2 so as to shield the end faces, and the end faces of the bent portions are adjacent to each other. A bottom structure in a bed, which is configured to be shielded so as to overlap with each other.