JPH07124038A - Bottom structure of bed - Google Patents

Abstract

PURPOSE:To reduce the production cost, by forming a curved bottom with a plurality of rectangular rigid materials and a connecting bend jointing these rigid materials, and deformably arranging the curved part in the curved inside of the bottom so as to form a recession. CONSTITUTION:In a bed 1, when actuating a driving unit to erect the bottom 2, plate members 11 as bends 10 between rigid materials 9 are deformed to form a recession in the curved inside, in the curbed bottom 8, and the curved bottom 8 is bent toward the plate members 11 side connecting the rigid materials 9 without compulsion so as to draw a smooth curve. In this time, jointing bars 17 move along loose grooves 18a, 18b of the body 15 in the base 13 of coverings 12 at the end faces of rigid materials 9 and the base 13 of the adjacent coverings 12 separate gradually from each other in accordance with the displacement of the bends 10. The end cap 14 are superimposed at the end and the rigid materials 9 and the bends 10 are always covered, and hence, there is no fear that fingers or substances are nipped therein by mistake.

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 to solve such a problem, and is configured such that the bottom can be bent with an appropriate radius of curvature to make the bent portion of the bottom gentle and the space of the bent portion. It is an object of the present invention to provide a bottom structure in a bed that secures the pressure and suppresses the feeling of pressure.

[0004]

In order to solve the above-mentioned problems, the present invention provides a bed having an undulating mechanism for the bottom, in which a flexible curved bottom is arranged at the bent portion of the bottom, and the curved bottom is provided. The bottom is configured by a plurality of strip-shaped rigid body portions and a bent portion connecting these rigid body portions,
It is characterized in that the bent portion is deformable so as to be concave inside the curved bottom. In the above-mentioned configuration, the curved bottom is interposed between the bottom corresponding to the back and the bottom corresponding to the waist. Further, the curved bottom is arranged at a position corresponding to the back of the knee of the bottom. In the above-mentioned configuration, the curved bottom has a shielding portion to be mounted on the end surface of the rigid body portion in the bed width direction, and the shielding portion has a base portion and an end cap mounted on the end surface of each rigid body portion,
The base portions are connected to each other so as to be able to correspond to the deformation of the bent portion so as to regulate the curved shape of the curved bottom, while the end portions of adjacent end caps are superposed so as to be displaceable with each other. To do. In addition, the rigid body portion in the curved bottom is a hollow body made of synthetic resin, and the intermediate portion of the bent portion and the connecting portion between the rigid body portion are formed to be thinner than other portions. Characterize. Further, a connection portion between the rigid body portion and the bent portion in the curved bottom,
It is characterized in that the middle portion of the bent portion is made of a softer member than other portions. Further, the connecting portion between the rigid body portion and the bent portion in the curved bottom and the intermediate portion of the bent portion are formed to be thinner than other portions, and these thin portions are compared to other portions. And is composed of a soft member. Further, the rigid bottom portion and the bent portion of the curved bottom are integrally configured. Further, it is characterized in that the rigid portion and the bent portion of the curved bottom are separately formed and connected to each other. Further, the shielding portion to be attached to the end face in the bed width direction of the rigid body portion of the curved bottom has a base portion and an end cap attached to each rigid body end surface, and the base portion has a lid member on the main body. It is configured to be screwed, and adjacent base portions are connected to each other by connecting rods so as to be displaceable with each other, and the connecting rods have bent both ends, and the main body is formed with staggered grooves, The connecting rod is movably mounted in the floating groove of the main body, and both ends of the connecting rod come into contact with the edges of the floating groove to restrict the floating distance in the floating groove, and the end cap is mounted on the main body. The end cap is characterized in that the overlapping portion is formed thinner than other portions so as to form a flat end surface with the adjacent end caps.

[0005]

[Function] When the bottom is raised, the curved bottom is deformed so that the bent portion between the rigid portions is concave toward the inside of the curve, and the curved bottom bends so as to draw a gentle curve smoothly. . By the way, the base portion of the shielding portion is fitted to the end surface of the rigid body portion in the bed width direction, and the end portions of the adjacent end caps are movably overlapped with each other. Since it is covered, there is no risk of accidentally pinching a finger or object. Further, since the base portion of the shielding portion is constrained and connected to each other so as to follow the deformation of the bending portion, the weight portion of the rigid body portion is prevented from sagging and the curved bottom is bent so as to draw a regulated curve. can do. In this way, the curved bottom bends so as to draw a gentle curve gently, so the space at the bending point is not unnecessarily narrowed and pressed, and the waist and abdomen are pressed and the body is prevented from shifting. can do.

[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, for example, a function of raising the back and a function of raising the leg by an electric starter unit 3 arranged below the bottom 2, and a back raising arm 4 for raising the back and a leg for raising the leg. It has a raised arm 5. The back raising arm 4 is in contact with the lower surface of the bottom 2 corresponding to the back via rollers 6, and the leg raising arm 5 is in contact with the lower surface of the bottom corresponding to the legs via rollers 7.

In the bed 1, flexible bending bottoms 8 are arranged at a portion corresponding to a bending portion between the back and the waist of the bottom 2 and a portion corresponding to a bending portion of the legs. The bottom 8 is made up of a plurality of strip-shaped rigid bodies 9
And a bent portion 10 that can expand and contract in the bed longitudinal direction between the rigid body portions 9 (see FIG. 2). The rigid body portion 9 is a synthetic resin hollow body formed by extrusion molding, and is configured integrally with the bent portion 10 (see FIG. 3). That is, the bending portion 10 is formed by a bendable plate member 11 that connects the rigid body portions 9 located inside the bending of the bottom 2. By forming the connecting portion between the intermediate portion of the plate member 11 and the rigid portion 9 to be thinner than the other portions, it is possible to bend inward around the intermediate portion of the plate member 11. The curved bottom 8 may have a structure in which the rigid portion 9 and the bent portion 10 are separately molded and connected.

On the end face in the bed width direction of the rigid body portion 9 of the curved bottom 8 as described above, the base portion 13 constituting the shielding portion 12 is fitted and the end cap 14 is attached to the base portion 13 ( 2 and 4). The base portion 13 is configured to screw the lid member 16 to the main body 15 (see FIG. 5). The bases 13 adjacent to each other are connected by a connecting rod 17 so that the bases 13 adjacent to each other can be displaced. The connecting rod 17 is movably mounted in the main body 15 with floating grooves 18a and 18b formed in different steps. Further, both ends of the connecting rod 17 are bent, and the ends of the connecting grooves 17 contact the edges of the free grooves 18a and 18b, thereby restricting the free distance in the free grooves 18a and 18b.
The main body 15 is provided with a locking portion 19 for mounting the end cap 14. The end cap 14 is formed so that the overlapping portion is thinner than other portions so as to form a flat end surface with the adjacent end caps 14.

In the bed 1 to which the bottom structure having the above-mentioned structure is applied, the starting unit 3 is started to start the bottom 2
As the floor is raised, the rigid body portion 9
The plate member 11, which is the bent portion 10 between, is deformed so as to be concave toward the inner side of the curve, and the curved bottom 8 draws a reasonably gentle curve on the plate member 11 side connecting these rigid body portions 9. Bend in (see Fig. 3). At that time, the base portion 13 of the shield portion 12 is fitted to the bed width direction end surface of the rigid body portion 9 (see FIG. 6), and in the base portion 13 of the shield portion 12,
The connecting rod 17 floats in the floating grooves 18a and 18b of the main body 15, and the base portion 13 of the adjacent shielding portion 12 is bent.
The gap increases according to the displacement of. Along with this, the overlapping portions of the end cap 14 are displaced. Even if the bent ends of the connecting rod 17 are displaced until they come into contact with the ends of the free grooves 18a and 18b of the main body 15, the end caps 14 are in a state where the ends overlap each other. The bent portion 10 is always covered, and there is no risk of accidentally pinching a finger or an object (see FIG. 7). In addition, as described above, the shield 12
The base portions 13 of the above are connected to each other in such a manner that they follow the deformation of the bending portion 10 and are displaced until the bent both ends of the connecting rod 17 come into contact with the ends of the free grooves 18a and 18b of the main body 15. The sagging deformation due to the weight of the rigid body portion 9 is prevented, and the curved bottom 8 can be bent so as to draw a regulated curve (see FIG. 1). In this way, since the curved bottom 8 bends so as to draw a gentle curve gently, the waist and abdomen are pushed and the body is prevented from shifting without the space of the bent portion being unnecessarily narrowed and pressed. Can be reduced.

As described above, the curved bottom 8 has the bent portion 10 connecting the rigid body portions 9 and the rigid body portions 9 and the bottom portion 2.
Since it has a simple structure that is configured by the bendable plate member 11 in which the rigid body portions 9 located inside the bend are connected, the manufacturing is easy and the manufacturing cost can be suppressed.

Next, the bottom structure in the bed according to the present invention can be implemented by the constitution described below. In this embodiment, substantially the same components as those in the above-described embodiments are designated by the same reference numerals, and the description thereof will be omitted. In the curved bottom 8 in this embodiment, the connecting portion 20 between the strip-shaped rigid body portion 9 and the bent portion 10 and the bent portion 21 at the center of the bent portion 10 are compared with other constituent portions 22 of the bent portion 10. The connecting portion 20 and the bent portion 21 are made of a softer material than the other constituent portions 22 of the bent portion 10 (see FIG. 8). In the embodiment, the connecting portion 20 between the strip-shaped rigid body portion 9 and the bent portion 10 and the bent portion 21 at the center of the bent portion 10 have the same thickness as the other constituent portions 22 of the bent portion 10. Alternatively, the member 22 may be made of a softer material than the other constituent parts 22. Also,
If the rigid body portion 9 and the bent portion 10 are formed separately and are connected to each other, if they are damaged, only the damaged portion can be replaced and waste can be suppressed.

[0012]

As described above, according to the present invention, since the curved bottom which is configured to be bendable with an appropriate curvature is adopted at the bent portion of the bottom, a feeling of pressure is not felt when the floor is undulated. Can be the bottom. The curved bottom is constituted by a plurality of strip-shaped rigid body portions and a bent portion that connects these rigid body portions.
Since it has a simple structure in which it can be deformed so as to be concave inside the curved inside of the bottom, it is easy to manufacture, and the manufacturing cost can be suppressed. The base portion of the shielding portion is fitted to the end face of the curved bottom in the bed width direction, and the end portions of the adjacent end caps are movably overlapped with each other. There is no risk of accidentally pinching a finger or object. Since the bases of the shields are constrained and connected to each other so as to follow the deformation of the bending part, the weight of the rigid part prevents the hanging part from deforming, and the curved bottom can bend to draw a regulated curve. it can.

[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 cross-sectional plan view showing an example of a curved bottom at the bent portion of the bottom shown in FIG.

FIG. 3 is a schematic cross-sectional explanatory view showing a structure of an end surface of the curved bottom shown in FIG.

4 is an explanatory plan view showing a configuration of an end surface of the curved bottom shown in FIG.

5 is an exploded perspective explanatory view showing a configuration of a shield part attached to an end surface of the curved bottom shown in FIG. 2. FIG.

FIG. 6 is a schematic explanatory diagram showing a connected state when the curved bottom is flat in the shielding portion shown in FIG.

FIG. 7 is a schematic explanatory view showing a connected state of the shielding part when the bottom is raised.

FIG. 8 is a schematic cross-sectional explanatory view showing another example of the structure of the end surface of the curved bottom according to the present invention.

[Explanation of symbols]

1 Bed 2 Bottom 3 Starting unit 4 Back raising arm 5 Leg raising arm 6, 7 Roller 8 Curved bottom 9 Rigid part 10 Bending part 11 Plate member 12 Shielding part 13 Base part 14 End cap 15 Main body 16 Lid member 17 Connecting rod 18a, 18b Floating groove 19 Locking part 20 Connection part 21 Bending part 22 Other component parts of bending part 10

Claims (10)

[Claims] 1. A bed having an undulating mechanism for a bottom, wherein a curved bottom having flexibility is arranged at a bent portion of the bottom, and the curved bottom has a plurality of strip-shaped rigid bodies,
A bottom structure in a bed, characterized in that it is configured by a bent portion that connects these rigid body portions, and that this bent portion is deformable so as to be concave inside the curved surface of the bottom. 2. The bed bottom structure according to claim 1, wherein the curved bottom is interposed between a bottom corresponding to the back and a bottom corresponding to the waist. 3. The bottom structure for a bed according to claim 1, wherein the curved bottom is arranged at a position corresponding to the back of the knee of the bottom. 4. The rigid bottom portion of the curved bottom has a shielding portion to be mounted on the end surface in the bed width direction, and the shielding portion has a base portion and an end cap mounted to the end surface of each rigid portion. And a configuration in which the base portions are connected to each other so as to correspond to the deformation of the bent portion to regulate the bending form of the curved bottom, and the end portions of adjacent end caps are superposed so as to be displaceable with respect to each other. The bottom structure in the bed according to claim 1. 5. The rigid body portion of the curved bottom is a hollow body made of synthetic resin, and the connecting portion between the intermediate portion of the bent portion and the rigid body portion is formed thinner than other portions. The bottom structure for a bed according to claim 1 or 2, characterized in that. 6. The connecting portion between the rigid body portion and the bent portion of the curved bottom and the intermediate portion of the bent portion are made of a softer member than other portions. Bottom structure in the bed. 7. The connecting portion between the rigid body portion and the bending portion in the curved bottom and the intermediate portion of the bending portion are formed to be thinner than other portions, and these thin portions are formed to be different from each other. The bed bottom structure according to claim 3, wherein the bottom structure is made of a softer material than that of the portion. 8. The bottom structure for a bed according to claim 3, wherein the rigid body portion and the bent portion of the curved bottom are integrally configured. 9. The bottom structure for a bed according to claim 3, wherein the rigid body portion and the bent portion of the curved bottom are separately formed and connected to each other. 10. The shielding portion adapted to be attached to the end face in the bed width direction of the rigid body portion of the curved bottom has a base portion and an end cap attached to each end surface of the rigid body portion, and the base portion is attached to the main body. The lid member is screwed, and adjacent base portions are connected to each other by connecting rods so as to be displaceable with each other. The connecting rods have bent both ends, and the main body has staggered grooves. Then, the connecting rod is movably mounted in the floating groove of the main body, and both ends of the connecting rod hit the edges of the floating groove to regulate the floating distance in the floating groove. The end cap is formed to be thinner than other parts so that the end cap forms a flat end surface with the adjacent end caps. Characteristic The bottom structure of the bed according to claim 2.