JP2554158Y2 - Water mattress - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water mattress in which a frame made of an elastic material is provided on the outer peripheral surface of a bag in which a liquid material is stored.

[0002]

2. Description of the Related Art There are various types of mattress devices. One of them is a so-called water mattress in which a liquid material is contained in a bag body. When the user is lying on the water mattress, the liquid inside flows according to the uneven shape of the body. Therefore, unlike a mattress device including a spring unit, a strong repulsive force is not generated in a protruding portion of a user's body, for example, a portion corresponding to a buttocks, so that the user can support the body without being pressed. Is done. As a result, the sleeping comfort is good and bedsores are hard to occur. Such advantages are noticed, and the utility value is increasing.

[0003] By the way, a water mattress is provided with a frame made of an elastic material on an outer periphery thereof so as to be able to sit on a peripheral portion thereof or to prepare an outer shape. . FIG. 4 shows the structure of a conventional water mattress in which a frame 2 is provided on the outer periphery of a bag 1. That is, conventionally, the frame 2 has a rectangular cross section, and the flat inner peripheral surface 2a has an outer peripheral surface 1a of the bag body 1.
Are joined. The bag body 1 and the frame body 2 are integrally covered by an exterior body 3 sewn in a bag shape.

[0004] In a water mattress, when a user lies on the bag 1 in which the liquid material L is stored, a force is generated to push the frame 2 outward. Therefore, since the frame 2 is greatly deformed by the force, the frame 2 is made of a relatively hard elastic material so as to minimize the deformation.

When the frame 2 is formed of a relatively hard elastic material, there is a great difference in hardness between the frame 2 and the bag 1 around the water mattress. Therefore, when the user sits on the periphery thereof, the hardness greatly differs depending on whether the user sits on the frame 2 or the bag 1, so that the user may feel uncomfortable.

When the user lies on the bag 1 and the bag is crushed and spreads outward, the frame 2 provided on the outer peripheral surface 1a is also deformed and spreads outward. Is inevitable. When the frame body 2 spreads outward, the outer shape of the water mattress may be broken and the appearance may be impaired.

[0007]

As described above, in the conventional water mattress, since the hardness of the bag body and the frame provided on the outer peripheral surface thereof are greatly different, when the user sits on the peripheral portion. In some cases, a frame made of an elastic material is deformed and its outer shape is easily damaged.

This invention is based on the above circumstances, and its purpose is to gradually change the hardness from the frame to the bag so that the user does not feel uncomfortable. An object of the present invention is to provide a water mattress in which a frame is hardly spread outward.

[0009]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention has a bag in which a liquid material is contained, and the outer peripheral surface of the bag is covered by a frame formed of an elastic material. In a mattress device in which the bag body and the frame body are integrally covered with an exterior body, a holding groove having a V-shaped cross section is formed in an inner peripheral surface of the frame body, and the frame body is formed inside the frame. It is characterized in that a reinforcing member for restricting outward expansion is buried.

[0010]

According to the above construction, since the V-shaped holding groove is formed on the inner peripheral surface of the frame, the thickness of the frame gradually changes to be thin, and the thickness of the frame changes according to the change in thickness. Since the softness gradually increases, it becomes difficult for the user to feel a great sense of incongruity, and even if the force for expanding the bag outward is applied to the frame, the expansion of the frame is restricted by the reinforcing member.

[0011]

1 to 3 show one embodiment of the present invention.
This will be described with reference to FIG. Water mattress 1 shown in FIG.
0 has a bag 11. The bag 11 is formed in a flat rectangular shape by a waterproof sheet, and contains a liquid material L such as water therein.

On the outer peripheral surface 11a of the bag 11, a rectangular frame 12 is provided. The frame 12 is made of a core material 12a made of synthetic resin such as urethane foam.
Is covered with a sheet 12b such as a cloth or skin layer.

A holding groove 13 having a V-shaped cross section for gradually changing the thickness from the outer side to the inner side in the width direction is formed on the inner peripheral surface of the frame 12 over the entire circumference. A reinforcing member 14 made of a band-like plate formed of an elastically deformable material such as a synthetic resin or a metal is embedded in the inner central portion in the thickness direction so that the width direction thereof is along the width direction of the frame 12. I have. That is, the reinforcing member 14 is embedded in a portion of the holding groove 13 corresponding to the bent portion 13a.

The bag body 11 and the frame body 12 are placed on a bottom plate 17 and are covered with an exterior body 15. The exterior body 15 is formed integrally with a pair of mirror grounds 15a covering the upper and lower surfaces of the bag body 11 and the frame body 12 and the outer peripheral surface of the frame body 12 and with the lower mirror ground 15a. The upper end of the town 15b is detachably connected to the outer peripheral edge of the upper mirror 15a by a fastener 16.

According to the water mattress 10 having the above structure, the bag 11 is filled with the liquid material L so that the bag 1
The outer peripheral surface 11 a of the first frame 11 enters the holding groove 13 of the frame 12.
In this state, the hardness P1 to P4 at each point from the outside to the inside in the width direction of the frame 12 is determined by the change in the thickness of the frame 12 in the width direction due to the holding groove 13.
1>P2>P3> P4.

P4 located inward in the width direction of the frame 12
Is close to the hardness of the bag 11 because the thickness of the frame 12 at that portion is considerably thin. Therefore, when the user sits on the periphery of the water mattress 10, there is not much difference in hardness between the inner portion in the width direction of the frame body 12 and the bag body 11, so that the user feels uncomfortable. It becomes difficult.

A reinforcing member 14 is buried in the frame 12, but since the reinforcing member 14 has a strip shape, the reinforcing member 14 is easily elastically deformed by a force applied from the upper surface of the frame 12. Therefore, when the user is seated on the frame 12,
The hardness of the reinforcing member 14 is hardly transmitted to the user.

When the user lies on the bag 11 and the bag 11 is crushed, a force for pushing the frame 12 outward as shown by P in FIGS. 2 and 3. Occurs. However, the reinforcing member 14 is embedded in the core 12a of the frame 12. The reinforcing member 14 is in the shape of a strip, and is provided so that the width direction thereof is along the width direction of the frame 12. Therefore, since it has a large resistance against the force P applied to the frame 12, the frame 12 is effectively prevented from spreading outward. In addition, even if the force P applied to the frame 12 is increased by the user lying on the water mattress 10, the reinforcing member 1
4 prevents the frame 12 from being deformed.

That is, by forming the inner peripheral surface of the frame body 12 in the V-shaped holding groove 13, the user lies on the bag body 11 and the bag body 11 is crushed. Even if a force P that pushes and spreads is generated, the frame 12 is deformed by the force P, and the outer shape of the water mattress 10 can be prevented from being collapsed by the reinforcing member 14 embedded in the frame 12. .

[0020]

As described above, according to the present invention, a frame body made of an elastic material is provided on the outer peripheral surface of a bag body in which a liquid material is accommodated, and these bag bodies and the frame body are integrally formed by an exterior body. In the above water mattress, a holding groove having a V-shaped cross section is formed in the inner peripheral surface of the frame, and a reinforcing member for restricting the outward expansion of the frame is provided inside. It was buried.

Therefore, the hardness of the frame body in the width direction gradually changes in accordance with the change in thickness due to the holding groove, so that a sharp change in hardness at the boundary between the frame body and the bag body is prevented. Since it can be eliminated, it is possible to reduce a feeling of strangeness when the user sits on the periphery of the water mattress.

Further, since the bag body is crushed and spread outward by the weight of the user, even if the bag body receives a force for expanding the frame body, the frame body is deformed outward by the reinforcing member embedded therein. Due to the difficulty, the outer shape of the water mattress is hardly damaged.

[Brief description of the drawings]

FIG. 1 is a partially broken perspective view showing the entire configuration of an embodiment of the present invention.

FIG. 2 is an enlarged sectional view of a part of the water mattress.

FIG. 3 is a plan view showing the same with an exterior body removed.

FIG. 4 is an enlarged sectional view for explaining a deformed state of a peripheral portion of a conventional water mattress.

[Explanation of symbols]

11: bag, 12: frame, 13: holding groove, 14: reinforcing member, 15: exterior, L: liquid.

Claims (1)

(57) [Scope of request for utility model registration] 1. A bag containing a liquid material, an outer peripheral surface of the bag is covered by a frame formed of an elastic material, and the bag and the frame are integrally formed by an outer package. In the water mattress to be covered, a holding groove having a V-shaped cross section is formed in the inner peripheral surface of the frame body, and a reinforcing member for regulating the outward expansion of the frame body is embedded inside. A water mattress comprising: