JPS62181011A - Cushion apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Technical Field of the Invention) The present invention relates to a cushioning device used for a mattress for a bed, a seal for a bed, etc.

(Technical dorsal circle of the invention and its problems) For example, in a pinerest for a bed as a cushion device, a large number of coil springs are connected in a matrix to form a spring unit, and at least the upper and lower surfaces of this spring unit are It is constructed by polymerizing an elastic material on the top surface and covering this polymer with an exterior body sewn into a bag shape.When sleeping using a pinerest with this structure, it provides a comfortable sleeping experience for the user. The important properties required for this are a soft feel and firmness that supports the human body in the correct sleeping position.In other words, when the user lies on the pinerest while sleeping, the softness that supports the user with a good feel is required. If the user sleeps down with such a good feeling, it needs to be firm enough to support the user in a correct sleeping position with the back straight.

However, the softness and hardness described above in pine tresses are contradictory. For example, if you want a soft and good feeling when you sleep, if Spring Unit 1- is made of soft springs, you will certainly get a good feeling at the beginning of sleep, but you will not be able to keep your body in the correct sleeping position with your back straight. Not only is it uncomfortable to sleep on, but it can also be bad for your health. On the other hand, if the spring unit is made of hard springs so that the human body can be supported in the correct sleeping position with the back muscles straight, the sensation at the beginning of sleep will be extremely unpleasant (perhaps causing discomfort to Rikawaishi).

(Object of the Invention) This invention makes it possible to change the hardness of the springs constituting the spring unit 1 to provide desired cushioning performance, for example, when used in a pinerest, the comfortableness that starts out as soft and gradually becomes harder. The purpose of the present invention is to provide a cushion device that provides comfortable sleeping comfort.

(Direct mounting of the invention) This invention provides that at least some of the many springs constituting the spring unit are made of a strength memory alloy that increases tensile strength and yield strength without changing shape by heating to a predetermined temperature. By forming the spring unit with a wire rod, the cushioning performance of the spring unit can be changed.

(Embodiment of the Invention) Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 to 3. FIG. This base 1' 2 includes a floorboard part 4 on which the pine l-less 3 is placed, a headboard body 5J3 attached to one longitudinal end of this floorboard part 4, and a foot attached to the other end. It is composed of a board body 6.

The above-mentioned pinerest 3 is constructed as shown in FIG. That is, 7 in the figure is to the spring unit 1.

This spring unit 7 includes a large number of coil springs 8.
are arranged in a matrix, and the upper and lower ends of adjacent coil springs 8 are connected by helical lines. An elastic body 10 made of urethane foam or the like is polymerized on the upper and lower surfaces of the spring unit (7), and this polymer is covered with an exterior body 11. This exterior body 11 covers the outer material 1.
An elastic material 1 such as urethane foam is placed between 2 and the lining 13.
4 is interposed, and these three are integrally quilted.

The coil spring 8 constituting the spring unit 7 is formed from a wire rod 15 made of a strength memory alloy. That is, this wire has, for example, 55% Nl and T1
It is formed by heating a 45% alloy at a temperature of 500° C. for 1 hour. The wire 15 thus formed has a tensile strength of 130 Kg/lNR2 and a yield strength of 60'J/MM2 at room temperature, and when heated to 35°C or higher, its tensile strength increases to 180 K9/mm2 and the yield strength to 90. 9/ltm2, and the heating temperature is 3.
It has been confirmed through experiments that the tensile strength and yield strength return to their original values when the temperature drops below 5°C. It has also been found through experiments that the temperature at which the characteristics of the wire 15 change, that is, the transformation point temperature, can be changed by changing the conditions under which the wire 15 is heat treated.

According to the pinerest 3 having such a structure, when the user lies on the mattress and sleeps on it, each coil spring 8 constituting the spring unit 7 remains at room temperature until a predetermined period of time has passed from the time the user lies on the mattress. These coil springs 8 have low tensile strength and proof strength. Previously, the coil spring 8 was in a soft state where it easily deformed with respect to the spacer, so it gave a soft feel to the user.

In other words, the coil spring 8 at the beginning of sleep is the third
As shown by the chain line in the figure, it is compressed and deformed to the state M by the user's load. When the user lies down for a predetermined period of time and the space inside the spring unit 7 is heated to a transformation point temperature of 35°C or higher by the user's body temperature, each coil spring 8
The tensile strength and yield strength of That is, the coil spring 8 becomes stiff. Then, depending on the user's load, the third
The coil spring 8, which has been compressed to the state shown by M in the figure, returns to its original state against the user's load to the position shown by m in the figure. Therefore, the spring unit 7 becomes stiffer than when the user first went to bed, and this reduces the possibility that the user's body, especially the heavy part of the body, falls into the spring unit 7, so that the user's back muscles are relaxed. In other words, at the beginning of sleep, the small coil spring 8 with tensile strength and proof strength supports the user with soft elasticity, but as time passes, the spring unit 7 supports the user in the correct sleeping position. When warmed by body temperature, the elasticity of these spring units 1 to 7 becomes hard, supporting the sleeper in a correct sleeping position with his back straight.

Note that the present invention is not limited to the above embodiment, and the coil spring 8 formed of the wire rod 15 made of a strength memory alloy is not the entire spring unit 1 to 7, but is shown by S in the diagram. It may be used only in the i range, that is, the area that supports the heaviest part of the user's body.

Further, the cushion device according to the present invention can be applied not only to a pinerest but also to, for example, an automobile seat or a sofa.

Further, the means for heating the coil spring 8 made of a wire material made of a shape memory alloy may not depend on body temperature, but may use various types of heaters, or may be energized to generate heat resistance in the coil spring. By heating the coil spring 8 with a heater, the stiffness of the spring unit 7 can be increased whenever necessary.

〔Effect of the invention〕

As described above, this invention has one spring unit.
At least a part of the large number of coil springs made up of the coil springs is made of a wire rod made of a strength memory alloy whose tensile strength, ji, and yield strength increase without changing the shape when heated to a predetermined temperature. Therefore, with a spring unit having such a structure, its elasticity can be changed.

For example, the material used in pinerests has unprecedented performance in that it gives the user a soft feel when they first go to bed, and as time passes, it supports the user in a correct sleeping position with their backs straightened. u pine tress
can be flc.

[Brief explanation of drawings]

Fig. 1 is a cross-sectional view of a part of a pinerest showing an embodiment of the present invention, Fig. 2 is a side view of the bed, Fig. 3 is an explanatory diagram of the deformed state of the coil spring, and Fig. 4 is a cross-sectional view of a part of a pinerest showing an embodiment of the present invention. FIG. 7 is a plan view of a schematic configuration of a spring unit showing another embodiment. 7...Spring unit 1-18...Coil spring, 15...Wire rod. Applicant's agent Patent attorney Takehiko Suzue Figure 1 Figure 2 Figure 3 Figure 4

Claims (1)

[Claims] In a cushion device that has a spring unit configured by combining a large number of springs, strength memory increases tensile strength and yield strength without changing shape by heating at least some of the large number of springs to a predetermined temperature. A cushion device characterized in that it is formed from a wire made of an alloy.