JPS5941738Y2 - pine tress - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a pinerest that can be applied to a pinerest for a bed or the like.

Conventional pocket coil spring type pinerests were excellent in terms of feel, but had the disadvantage of high cost due to the need for sewing.

In addition, a previously proposed method has been proposed in which a large number of deep grooves are arranged in parallel in a foam, coil springs are inserted into the grooves without gaps, and a cover plate is attached to the top surface. The use of the lower surface may result in different cushioning properties, and there is also the risk that adjacent springs will come into contact with each other and buffer each other, resulting in partially different cushioning properties.

It also has the disadvantage of requiring a separate cover plate of considerable thickness.

The present invention was proposed in order to solve the above-mentioned conventional drawbacks.A large number of notches are provided from the upper surface to the lower surface of the elastic foam, and a cylindrical coil spring is inserted into the through hole formed by widening each of the notches. By having a simple structure that is just covered with an exterior body, the pine tress can be used with the same feeling on the front and back sides, there is no difference in cushioning performance in parts due to spring cushioning, and the pine tress can be obtained at a low cost. We aim to provide the following.

An embodiment of the present invention will be described below with reference to the drawings. Fig. 1 is a partially cutaway perspective view of a pine tress showing an embodiment of the present invention, and the direction from the upper surface 2 to the lower surface 3 of an elastic foam 1 such as urethane foam is shown in FIG. The core body 6 is constructed by inserting a cylindrical coil spring 5 having a length approximately equal to the thickness of the foam body 1 into a large number of through holes 4.

Reference numeral 7 denotes an exterior body that covers the core body 6, and is a conventionally known exterior body such as felt, or a body made of urethane foam on the inside and cloth on the outside.

Next, an example of a method for forming through holes 4 in the elastic foam 1 will be explained with reference to FIGS. 4 and 5. After forming the slit 8, when both sides of the foam 1 are pulled in the direction of arrow A-A' in FIG. 4, the slit 8 opens and a through hole 4 as shown in FIG. 5 is formed. be done.

When the cylindrical coil spring 5 is inserted into the through hole 4, the spring 5 is pressed by the restoring force of the side wall of the through hole 4 and is prevented from falling off. Since there is no need to worry, production can be carried out quickly.

Note that the formation of the through holes 4 is not limited to the method of the embodiment shown in FIGS. 4 and 5, and a large number of through holes may be formed by drilling from the top surface to the bottom surface of the foam 1. In this case, the cylindrical portion of the foam corresponding to the hole diameter is wasted.

As explained in detail above, the core of the present invention is constructed by providing a large number of cuts from the upper surface to the lower surface of the elastic foam, and inserting a cylindrical coil spring into the through hole formed by widening each cut. Since the coil spring is supported by the foam side wall of the through hole, it completely eliminates the horizontal and vertical vibrations of the coil spring, which are disadvantages of the conventional coil spring type, and eliminates the discomfort that was the disadvantage of the conventional method. be able to.

In addition, since there is no structural difference between the top and bottom surfaces, this invention is economical because it can be used with the same feeling on the front and back sides.Moreover, it has a composite elasticity of elastic foam and a cylindrical coil spring, so it provides a cushion with a good feeling. It has many excellent practical effects, such as being able to obtain high properties, simple structure, and low cost.

Note that by partially using coil springs with different wire diameters, it is possible to provide portions with different cushioning properties at predetermined positions.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway perspective view of a pine tress showing an embodiment of the present invention, Fig. 2 is an enlarged plan view of the concentric body, Fig. 3 is an enlarged sectional view taken along line XX of Fig. 1, and Fig. 4 5 is a perspective view of a foam block according to an embodiment of the present invention before through-holes are formed, and FIG. 5 is a perspective view of the foam block in which through-holes are formed from the cuts shown in FIG. 4. Explanation of the main parts of the figure, 1... Elastic foam, 2.
...Top surface, 3...Bottom surface, 4...
Through hole, 5... Cylindrical coil spring, 6.
...Core body, 7... Exterior body.

Claims (1)

[Scope of utility model registration request] A core body is made by providing a large number of cuts from the upper surface to the lower surface of an elastic foam of appropriate thickness, and inserting a cylindrical coil spring into the through hole formed by widening each cut.
Pine tress covered with an exterior body.