JP2013230189A - Mattress for electric bed - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an interior-sprung mattress which bends while fitting to the flexion of the bottom of an electric bed when reclined.SOLUTION: A mattress for an electric bed is structured as follows: a pocket coil sheet (2) formed into a rectangular shape is housed in a foam frame (1); the whole of a cushion (4) prepared by adhesively bonding a foam sheet (3) on the top and bottom surfaces of the foam frame (1) and the pocket coil sheet (2) to be fixed is covered with a quilting bag (5); a largely-notched groove (6) at one portion at a side where force acts in a shrinking direction, and small-notched grooves (7), (7') ... at at least two portions at a side where force acts in a stretching direction, are formed, as one set, on each of positions in a longitudinal direction of the foam frame (1) and corresponding to the bending parts of an electric bed; and any frame wires are not set to the top and bottom of the outer circumference of the pocket coil sheet.

Description

  The present invention relates to a mattress applicable to an electric bed or a reclining bed.

  Conventionally, a mattress composed of at least two foam layers disclosed in JP-A No. 2001-327367, wherein a plurality of protrusions are continuously formed on the upper surface of the first foam layer, and at least one A ridge is formed along the line, and a plurality of ridges extending in the same direction as the one line are formed on the upper surface of the second foam layer, and formed between the ridges. At least one of the grooves to be overlapped with the protrusion of the first foam layer, and the protrusion of the first foam layer and the groove of the second foam layer Some mattresses were designed so that they could bend along overlapping lines.

    However, the whole is made of a foam layer, and when compared with a spring mattress, it becomes a cushion body that is liable to lose its shape and lose its shape, and further, a groove is formed to make it easier to bend at the bending position of the electric bed. Therefore, the thickness of the portion has become thin, and there has been a problem in durability.

    On the other hand, in a spring mattress, as an attempt to make it easier to bend, a rectangular spring seat is formed by connecting adjacent upper and lower surfaces of a continuous spring body of Japanese Patent Laid-Open No. 2002-85203 with a helical wire, corresponding to the bending position of an electric bed By forming a helical line removal part at one place on the upper surface and forming a helical line removal part at two places on the lower surface, a play part is created on the side where the upper surface of the bent portion of the mattress is contracted and on the side where the lower surface is extended. There was something that made it easier to bend.

  In this case, when the mattress is bent in the helical wire removal unit, the adjacent continuous spring bodies are in a free state. The continuous spring body of the line removing portion does not return to the normal position, and the cushioning property is impaired, and adjacent continuous springs are rubbed with each other, so that there is a problem that sound is easily generated.

JP 2001-327367 A Japanese Patent Laid-Open No. 2002-85203

  An object of the present invention is to provide a mattress that is easy to bend and has a high durability by combining a pocket coil sheet and a foamed frame as an electric bed mattress.

    The invention of claim 1 accommodates a pocket coil sheet (2) formed in a rectangle in the foam frame (1), and foam sheets on the upper and lower surfaces of the foam frame (1) and the pocket coil sheet (2). In the case where the cushion body (4), which is bonded and fixed (3), is covered with the quilting bag body (5), the cushion body (5) shrinks to a position corresponding to the bent portion of the electric bed in the longitudinal direction of the foam frame (1). A large cut groove (6) is provided on the side where force is applied in the direction, and a small cut groove (7) (7 ') ... is provided on the side where force is applied in the extending direction as a set of at least two places. A mattress for an electric bed, characterized in that the upper and lower outer circumferences of the pocket coil sheet (2) do not have a frame line.

The invention of claim 2 is characterized in that the foam sheet (3) is separated at a position corresponding to the large cut groove (6) and the small cut groove (7) of the foam frame (1). An electric bed mattress according to claim 1.

In the present invention, the foam frame (1) has a large notch groove (6) at a position corresponding to the bending portion of the electric bed in the longitudinal direction and a position where the force acts in the contracting direction, and the force in the extending direction. ·············································································· By accommodating the pocket coil sheet (2), the foam frame (1) itself is easily bent at the bent portion of the electric bed, and the pocket coil sheet (2) accommodated in the foam frame (1). ) Is one coil spring enclosed in each bag in the bag row, and the bag row itself is flexible and does not have a frame line on the outer periphery, so the pocket coil sheet (2) itself The structure is easy to bend at any location, and the mattress as a whole is very Bend to fit, as well as reduce the feeling of pressure at the time of reclining to the user, compared to a cushion of only foam, take very sag and lose shape difficult thing it has excellent durability.
Further, since the foam sheet (3) is separated at a position corresponding to the large cut groove (6) and the small cut groove (7) of the foam frame (1), it becomes easier to bend.

FIG. 1 is an overall perspective view of an electric bed mattress with a part cut away to show the internal structure in one embodiment. FIG. 2 is a side view showing a part of the quilting bag body (5) cut out in one embodiment when the electric bed is reclined.

  As a mattress for an electric bed, a foam frame (1) and a pocket coil sheet (2) are combined, and a force acts in a contracting direction at a position corresponding to the bent portion of the electric bed in the longitudinal direction of the foam frame (1). When reclining, one large cut groove (6) on the side and one small cut groove (7) (7 ') ... on the side where the force acts in the extending direction are provided as a set. The mattress is easy to bend along the bending of the electric bed frame.

  FIG. 1 is an overall perspective view of an electric bed mattress according to an embodiment of the present invention, and is shown with a part cut away to show the internal structure. The foam frame (1) is flexible and bent. In consideration of easiness, a flexible urethane foam is used, but it is not particularly limited, and another foamed material may be used.

  As shown in FIG. 1, the quilting bag body (5) is obtained by quilting the front dough (12), the filling (13) and the lining (14) integrally.

  As shown in FIG. 2, when the electric bed is bent, the bending point A (9) is placed on the mattress placed at the bending point A (9), the bending point B (10), and the bending point C (11). In the upper surface side of the mattress, the force acts in the contracting direction as indicated by the arrow, and on the lower surface side, the force acts in the extending direction. Similarly, at the bending point B (10), the lower surface side in the contracting direction on the upper surface side of the mattress. On the other hand, at the bending point C (11), on the other hand, the force acts on the upper surface side of the mattress in the extending direction and on the lower surface side.

  As shown in FIG. 1, in the longitudinal frame (8) portion of the foam frame (1), the bending point A (9) of the electric bed is set to correspond to the action of force at each bending point of the electric bed. At the corresponding location, one large slit (6) is provided on the upper side and two small slots (7) are provided on the lower side, but the lower slot (7) is a plurality of smaller slots. It does not matter even if one is provided.

  Similarly, at the position of the longitudinal frame (8) (8 ') corresponding to the electric bed bending point B (10), one large cut groove (6) is formed on the upper side and two small cut grooves (7) are formed on the lower side. Provided.

  Further, at the position of the longitudinal frame (8) (8 ') corresponding to the electric bed bending point C (11), conversely, two small cut grooves (7) on the upper side and large cut grooves (6 on the lower side) ) Is provided.

  As shown in FIG. 1, the pocket coil sheet (2) accommodated in the foam frame (1) has coil springs enclosed in a continuous row of bags made of non-woven fabric. The shape is preferably barrel-shaped, and is formed into a rectangular pocket coil sheet (2) by hot-melt bonding the rows of bags.

  The pocket coil sheet normally used as a pocket coil mattress has a frame line fixed to the outer periphery of the upper and lower surfaces of the pocket coil sheet in order to prevent deformation and durability. Since the pocket coil sheet (2) is accommodated in the foam frame (1), there is no risk of losing shape even if the frame is removed, and the pocket coil sheet (2) itself is flexible and can be placed at any location. The structure is easy to bend.

  The foam sheet (3) is separated at a position corresponding to the large cut groove (6) and the small cut groove (7) of the foam frame (1). The pocket coil sheet (2) and the foam frame (1) It is bonded and fixed to the upper and lower surfaces.

  Since the foam frame (1) has a cut groove, a reinforcing material such as a non-woven fabric may be bonded to the periphery for reinforcement.

  The thing of this invention is applicable also to the cushion structure of a sofa bed which has a bending part, or a reclining chair.

DESCRIPTION OF SYMBOLS 1 Foam frame 2 Pocket coil sheet 3 Foam sheet 4 Cushion body 5 Quilting bag body 6 Large cut groove 7 Small cut groove

Claims (2)

  A pocket coil sheet formed in a rectangular shape is accommodated in a foam frame, and the entire cushion body in which the foam sheet is bonded and fixed to the upper and lower surfaces of the foam frame and the pocket coil sheet is covered with a quilting bag body, At the position corresponding to the bending portion of the electric bed in the longitudinal direction of the foam frame, there is one large incision groove on the side where the force acts in the shrinking direction and at least two small incision grooves on the side where the force acts in the extending direction. A mattress for an electric bed, which is provided as a set and has no frame lines on the upper and lower sides of a pocket coil sheet.   2. The electric bed mattress according to claim 1, wherein the foam sheet is separated at a position corresponding to the large cut groove and the small cut groove of the foam frame.