JP2001137075A - Mattress device and bed device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mattress device in which the spring parts of the flexible part of a spring unit formed by a continuous spring body are not entangled with each other. SOLUTION: A plurality of spring parts 37, the upper and lower ends of the adjacent spring parts formed by one wire rod are respectively connected together by upper connecting rods 38 and lower connecting rods 39, the adjacent spring parts are entangled together to form a continuous spring body 36 and the continuous spring bodies arranged in parallel to obtain a spring unit 33. A flexible part 41 formed by connecting a pair of adjacent spring parts of the continuous spring body together only by the upper connecting rods is formed along the direction of width of the spring unit in the longitudinally intermediate part of the spring unit. A second helical line 43 is connected to the axially intermediate part of one spring part with the flexible part formed along the direction of width of the spring unit.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mattress device having a spring unit constituted by a continuous spring body in which a plurality of spring portions are formed continuously by one wire, and a bed device provided with the mattress device.

[0002]

2. Description of the Related Art A bed apparatus is provided with a so-called wake-up type in order to easily maintain an upright posture of a user who is difficult to get up by himself or a sick person such as an elderly person or a sick person. Bed apparatus is used.

[0003] This type of bed apparatus has a bed body, and the bed body is provided with a floor plate. The floor plate includes a fixed floor fixed to the bed body, a back floor rotatably connected to one end of the fixed floor, and a leg floor rotatably connected to the other end.

[0004] The bed body is provided with a drive mechanism. This drive mechanism drives the back floor and the leg floor to undulate. When the back floor is raised, the user can raise the upper body, and at the same time, raises the leg of the user with the upper body raised by bending and raising the leg floor in a U-shape. In addition, the hips of the body are prevented from moving forward.

In such a wake-up type bed apparatus, a mattress apparatus is placed on the floor plate. This mattress device employs a structure that is easily bent in accordance with rising of the floor plate.

[0006] As a mattress device having a structure that is easily bent, a structure using a continuous spring body is known. In the continuous spring body, the upper end and the lower end of the plurality of spring portions and the adjacent spring portions are continuously formed by the upper connecting rod portion and the lower connecting rod portion by one wire, and the adjacent spring portions are entangled. It has a structure.

[0007] A plurality of continuous spring bodies are juxtaposed, and the upper connecting rod and the lower connecting rod are connected by a helical wire in a direction intersecting with the juxtaposed direction to form a spring unit. An elastic material is laminated, and the laminated body is covered with an exterior ground to form a mattress device.

In order to make the mattress device having such a structure bendable in accordance with the ups and downs of the floor plate, a pair of adjacent spring portions of the spring body are connected to each other over the entire length in the width direction of the spring unit. It is formed into a flexible part connected only by the upper connecting rod without entangling the parts. Thereby, in the flexible portion, the spring unit can be bent by elastically deforming the upper connecting rod portion.

[0009]

When the mattress device having such a configuration is applied to a bed-type bed device, the mattress device has a structure that can be bent according to the rising of the floor plate, that is, a fixed floor portion. The structure which has a flexible part in each of the connection part with a back floor part and the connection part with a fixed floor part and a leg floor part will be employ | adopted.

The flexible portion connects a pair of adjacent spring portions only by the upper connecting rod portion. When the spring unit is bent upward, the lower end side of the flexible portion is opened. The pair of opposing spring portions formed does not collide with each other. However, when the spring unit is bent downward, that is, when the flexible portion is bent in the closing direction, the pair of spring portions forming the flexible portion will collide with each other. At this time, the lower ends of the pair of spring portions may be entangled, and the entanglement may not be released even if the bent state of the spring unit is released.

FIG. 5B shows a state in which the lower end portions of a pair of spring portions 3 forming the flexible portion 2 of the continuous spring body 1 are intertwined. As shown in FIG. 5A, the continuous spring body 1 is configured such that upper ends and lower ends of a plurality of spring portions 3 are alternately connected by an upper connecting rod portion 4 and a lower connecting rod portion 5, respectively. The pair of spring portions 3a, 3b and 3c, 3d adjacent to each other without being connected by the rod portion 5 are formed in the flexible portion 6 by setting the connection state to only the upper connection rod portion 4.

The spring unit comprises a plurality of continuous spring bodies 1
These continuous spring bodies 1 are connected at the location of the upper connecting rod 4 by a helical wire 7 provided in a direction intersecting the direction in which they are arranged.

In such a configuration, when the continuous spring body 1 is bent downward, that is, when the lower end side of the flexible portion 6 is bent in the closing direction, as shown in FIG. May be entangled with the lower end of the other opposing spring portion 3a. Then, the entangled state cannot be released even if the bent state of the spring unit is released, so that the performance of the spring unit is reduced.

According to the present invention, when a spring unit is formed using a continuous spring body, and a pair of spring portions adjacent to the spring unit form a flexible portion connected only by an upper connecting rod, It is an object of the present invention to provide a mattress device in which a pair of opposing spring portions are not entangled when folded in a closing direction, and a bed device using the mattress device.

[0015]

According to a first aspect of the present invention, a plurality of spring portions and upper and lower ends of adjacent spring portions are connected by an upper connecting rod portion and a lower connecting rod portion by a single wire. At the same time, a continuous spring body in which adjacent spring portions are entangled is formed, the continuous spring bodies are juxtaposed to form a spring unit, and an elastic material is laminated on at least the upper surface of the upper and lower surfaces of the spring unit, and the laminated body is covered In a mattress device covered with a body, a flexible portion in which a pair of adjacent spring portions of the continuous spring body are connected only by an upper connecting rod portion is provided in a middle portion in a longitudinal direction of the spring unit in a width direction of the spring unit. And the intermediate portion in the axial direction of one of the spring portions forming the flexible portion is connected by an entanglement preventing member provided along the width direction of the spring unit. And a mattress device.

According to a second aspect of the present invention, the spring unit is provided with flexible portions at a plurality of intermediate portions in the longitudinal direction.
2. The mattress device according to claim 1, wherein the entanglement preventing member is provided at least in a portion bent downward.

According to a third aspect of the present invention, a bed body, a fixed floor portion fixed to the bed body, a back floor portion rotatably connected to one end of the fixed floor portion and the other end rotatably. The mattress device, comprising: a floor plate body divided into a connected leg floor portion; a driving mechanism for driving the back floor portion and the leg floor portion to move up and down; and a mattress device placed on the floor plate body. A bed apparatus according to claim 1 is a bed apparatus.

According to the first and second aspects of the present invention, the entanglement preventing member is provided along the width direction of the spring unit at one axially intermediate portion of the pair of spring portions forming the flexible portion. Therefore, when the spring unit is bent by the entanglement preventing member, the other spring portion can be prevented from being entangled with one spring portion.

According to the third aspect of the present invention, even if the mattress device is bent by raising and lowering the back floor portion and the leg floor portion of the floor plate, the spring portion of the flexible portion of the spring unit constituting the mattress device is bent. It can prevent entanglement.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 4 shows a wake-up type bed apparatus, which is provided with a bed body 11. The bed body 11 has a base frame 12, and a bed frame 13 is connected to the base frame 12 by a link 14. The link 14 is driven to rotate by a vertical drive mechanism (not shown) in a direction indicated by an arrow in FIG. Thereby, the bed frame 13
Support height can be changed.

The bed frame 13 is provided with a floor plate 15. The floor plate 15 is divided into a plurality of floors. That is, the fixed floor portion 16 is fixed to the central portion of the bed frame 13 in the longitudinal direction, and the waist floor portion 17 and the back floor portion 18 are connected to one end of the fixed floor portion 16 so as to be rotatable sequentially. On the other side of the fixed floor 16, a first leg floor 19 and a second leg floor 21 are sequentially rotatably connected.

A back raising drive mechanism 22 is provided on the lower surface side of the bed frame 13. The back raising drive mechanism 22 has a first arm 23 and a second arm 24 that are driven to rotate. A roller 2 is provided at the tip of the first arm 23.
The roller 25 is rotatably engaged with a rail member 26 provided on the lower surface of the back floor 18 and having a U-shaped cross section.

Accordingly, when the first arm 23 is driven to rotate in the ascending direction, the back floor portion 18 is driven in the rising direction. When the back floor 18 rises, the waist floor 17 rotates in the ascending direction in conjunction therewith.

A roller 27 is rotatably provided at the end of the second arm 24, and the roller 27 is in contact with the lower surface of the first floor 19. Therefore, when the second arm 24 is driven, the first leg floor 19 rises,
The second leg floor 21 is interlocked therewith.
One end of a link 28 is rotatably connected to one end of the second leg floor 21. The other end of the link 28 is rotatably connected to the bed frame 13.

Therefore, the first leg floor 19 rises,
When the second leg floor 21 interlocks with it, the second leg floor 2
1 is held by the link 28 in a state of being raised substantially horizontally.

A head board 29 is provided at one longitudinal end of the bed frame 13 and a foot board 31 is provided at the other end.

A mattress device 32 is provided on the floor plate 15.
Is placed. The mattress device 32 has a spring unit 33, and a sheet-like elastic material 34 is laminated on upper and lower surfaces of the spring knit 33, and the laminated body is covered with an exterior ground 35.

The above-mentioned spring unit 33 is shown in FIG.
As shown in (a) and (b), a plurality of continuous spring bodies 36 are juxtaposed along the width direction of the spring unit 33. In the continuous spring body 36, the upper end and the lower end of the plurality of spring portions 37 are respectively connected to an upper connecting rod portion 38 and a lower connecting rod portion 39.
Are connected alternately.

In the middle of the spring unit 33 in the longitudinal direction, the upper connecting rod 38 is connected only by the upper connecting rod 38 so that the pair of adjacent springs 37 is not connected by the lower connecting rod 39. Flexible portion 41 that allows spring unit 33 to bend while elastically deforming 38
Is formed.

In this embodiment, the flexible portion 41
The floor plate 15 is formed at a position corresponding to a connecting portion between the fixed floor portion 16 and the waist floor portion 17 and a connecting portion between the first leg floor portion 19 and the second leg floor portion 21. In addition, flexible part 4
1 releases the entanglement of the two spring portions 37 (referred to as 37b for convenience) opposite to the two spring portions 37 (referred to as 37a for convenience) connected by the lower connecting lower portion 39 as shown in FIG. It is formed by that.

Note that, except for the flexible portion 41, FIG.
As shown in (b), the adjacent spring portions 37 are entangled with the middle portion in the axial direction and the lower connecting rod portion 39, so that the spring unit 33 cannot be bent significantly.

In the flexible part 41 and other places,
The ends of the adjacent upper connecting rods 38 are intertwined. Further, in places other than the flexible portion 41, the lower connecting rod 3
9 is also intertwined. Then, in the continuous spring bodies 36 arranged in parallel, the entangled portions of the lower connecting rod portion 39 other than the upper connecting rod portion 38 and the flexible portion 41 are connected by the first helical wire 42, respectively. That is, the first helical wire 42 is provided along the width direction of the spring unit 33 as shown in FIGS.

In the place of the flexible portion 41, an anti-entanglement member is provided over substantially the entire length in the width direction of the spring unit 33 at an axially intermediate portion of one of the pair of spring portions 37 in which the entanglement is released. A second helical wire 43 is provided so as to be connected to the spring portion 37. When the spring unit 33 is bent by the second helical wire 43 in the direction in which the flexible portion 41 closes, one spring portion 37 of the pair of spring portions 37 of the flexible portion 41 is attached to the other spring portion. 37 is prevented from becoming entangled.

FIG. 3A shows a case where the spring unit 33 is bent with the flexible portion 41 opened.
In this case, since the adjacent spring portions 37 to which the flexible portion 41 is not connected are separated, these spring portions 37 do not become entangled.

On the other hand, as shown in FIG.
When the spring unit 33 is bent so that the flexible unit 41 is closed, a pair of opposed spring portions 3 forming the flexible portion 41 are formed.
7 are displaced in the direction in which they come into contact with each other, and there is a possibility that these spring portions 37 become entangled.

However, one of the pair of spring portions 37 is provided with a second helical wire 43 along the width direction of the spring unit 33 at an intermediate portion in the axial direction. Therefore, the other spring portion 37 is connected to the second helical wire 43.
5B, so that the other spring portion 37 is prevented from being entangled with the one spring portion 37 as shown in FIG. 5B. Become.

When the mattress device 32 having the above configuration is used for a bed-type bed device, the flexible portion 41 of the spring unit 33 raises the back floor portion 18 or the first leg floor portion 19. When bent.

Normally, the flexible portion 41 corresponding to the connecting portion between the fixed floor portion 16 and the back floor portion 18 is deformed in the opening direction by raising the back floor portion 18, so that the pair of the flexible portions 41 Are not entangled with each other. However, since the upper and lower surfaces of the mattress device 32 are normally used, the mattress device 32 may be erroneously placed on the floor plate 15 such that the open end of the flexible portion 41 faces upward. In such a case, since the spring unit 33 is bent in the direction in which the flexible portion 41 closes, the pair of opposed spring portions 37 of the flexible portion 41 become entangled.

Further, even when the mattress device 32 is placed on the floor plate 15 such that the open end of the flexible portion 41 faces downward, the first leg floor portion 19 and the second leg floor portion 21 can be connected to each other. The flexible portion 41 corresponding to the connecting portion is provided with the first leg floor portion 19.
And the second leg floor 21 are bent in an inverted shape,
Since the spring unit 33 is bent in the direction in which the flexible portion 41 closes, the spring unit 33 is displaced in a direction in which the pair of opposing spring portions 37 are entangled.

In any case, as described above, the second half of the pair of spring portions 37 of the flexible portion 41 in the axial direction is formed along the width direction of the spring unit 33.
Since the helical wire 43 is provided, it is possible to prevent the one spring portion 37 from being entangled with the other spring portion 37 by the helical wire 43.

[0042]

According to the first and second aspects of the present invention, the entanglement preventing member is provided in the axial direction halfway of one of the pair of spring portions forming the flexible portion in the width direction of the spring unit. To be provided along.

Therefore, when the spring unit is bent by the entanglement preventing member, the other of the pair of opposing spring portions of the flexible portion, which is not provided with the entanglement preventing member, contacts the entanglement preventing member. The other spring portion can be prevented from being entangled with one spring portion.

According to the third aspect of the present invention, even if the mattress device is bent by raising and lowering the back floor portion and the leg floor portion of the floor plate, the spring portion of the flexible portion of the spring unit constituting the mattress device is bent. It can prevent entanglement.

[Brief description of the drawings]

FIG. 1A is a perspective view of a portion of a spring unit in which a flexible portion is formed, showing an embodiment of the present invention;
(B) is a perspective view showing a part of parts other than a flexible part similarly.

2A is a plan view showing the upper surface of the spring unit, FIG. 2B is a plan view showing the lower surface of the spring unit, and FIG.
(C) is a side view similarly.

3A is a side view of a state in which the spring unit is bent so that the flexible portion is opened, and FIG. 3B is a side view of the state in which the spring unit is bent in the closing direction.

FIG. 4 is a side view of the bed device in which a mattress device placed on a floor plate is similarly sectioned.

5 (a) is a perspective view of a conventional flexible portion, and FIG. 5 (b) is a perspective view of a state in which a spring portion of the flexible portion is also entangled.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 ... Bed main body 15 ... Floor board 16 ... Fixed floor part 18 ... Back floor part 19, 21 ... Leg floor part 22 ... Drive mechanism 33 ... Spring unit 34 ... Elastic material 35 ... Exterior ground 36 ... Continuous spring body 37 ... Spring part 38: upper connecting rod 39: lower connecting rod 41: flexible part 43: second helical wire (entanglement preventing member)

Claims (3)

[Claims] 1. A continuous spring in which a plurality of spring portions and an upper end and a lower end of an adjacent spring portion are connected by an upper connecting rod portion and a lower connecting rod portion by one wire, and the adjacent spring portions are entangled. A mattress device in which a body is formed, the continuous spring bodies are juxtaposed to form a spring unit, an elastic material is laminated on at least the upper surface of the upper and lower surfaces of the spring unit, and the laminated body is covered with an exterior body. A flexible portion in which a pair of adjacent spring portions of the continuous spring body are connected only by the upper connecting rod portion is formed along the width direction of the spring unit at an intermediate portion in the longitudinal direction of the spring unit, and the flexible portion is formed. The middle part in the axial direction of one spring part is
A mattress device which is connected by an entanglement preventing member provided along a width direction of a spring unit. 2. The spring unit according to claim 1, wherein flexible portions are formed at a plurality of locations in the middle of the longitudinal direction, and the entanglement preventing member is provided at least in a portion bent downward. The mattress device according to claim 1. 3. A bed body, a fixed floor portion fixed to the bed body, a back floor portion rotatably connected to one end of the fixed floor portion, and a leg floor rotatably connected to the other end. A floor plate body divided into two parts, a drive mechanism for driving the back floor portion and the leg floor portion to move up and down, and a mattress device placed on the floor plate body, wherein the mattress device is configured as described in claim 1. A bed apparatus characterized by the above-mentioned structure.