JPH0242212Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Purpose of the Invention] (Industrial Application Field) The present invention relates to an improvement of a pine tress comprising an elastic foam having elasticity and an exterior body covering the elastic foam.

(Prior Art) In a pinerest, for example, a pinerest on which a person lies, it is preferable to vary the degree of elasticity depending on the region. For example, in areas where a person's lower back is pressed, it is preferable that the material is hard and does not sink too much.

Incidentally, as a conventional pinerest on which a person lies, a structure according to Japanese Utility Model Publication No. 59-41738 has been provided. The pine tress related to this bulletin is
A single piece of elastic foam is provided, a large number of cuts are formed through the single piece of elastic foam in the thickness direction, a coil spring is inserted into the through hole formed by widening the cuts, and the elastic foam is expanded. The body is covered with an exterior body.

(Problems to be Solved by the Invention) The pinerest according to the above-mentioned Japanese Utility Model Publication No. 59-41738 has a structure mainly composed of one piece of elastic foam. Therefore, the elasticity of the pine tress was the same in almost all parts. Therefore, it has not been possible to provide a pine tress whose elasticity varies depending on the region as described above.

The present invention was devised in view of the above-mentioned circumstances, and its purpose is to provide a pine tress whose elasticity can be varied depending on the region.

[Structure of the invention] (Means for solving the problem) The pine tress according to the invention is a thick plate having a large number of through holes extending in the thickness direction and a coil spring inserted into at least a part of the through holes. In a pine tress consisting of a shaped elastic foam and an exterior body covering the elastic foam, both sides of the elastic foam are axially symmetrically wavy, and the width is continuous from wide to narrow, and the wide part has a wavy shape. an elongated first elastic body having the through hole, the both side surfaces being shape-symmetrical or axially symmetrical with both side surfaces of the first elastic body, the width of which is continuous with the narrow width and the narrow width width; an elongated second elastic body having the through hole in the part thereof, and a large number of the first elastic bodies and the second elastic bodies arranged in contact with each other in the width direction thereof. It is characterized by the presence of

A feature of the present invention is that a first elongated elastic body and a second elongated elastic body are arranged in contact with each other in their width directions, thereby forming an elastic foam.

Here, the first elastic body has a configuration in which both side surfaces in the width direction are axially symmetrically waved, the width is wide and narrow, and the width is continuous, and the wide width portion has a through hole for inserting a coil spring. On the other hand, the second elastic body has both side surfaces in the width direction that are symmetrical in shape or axially symmetrical with the first elastic body and both side surfaces, and the width is continuous with narrow and wide, and a coil spring is inserted in the wide part. It has a through hole for

Therefore, the second elastic body has a configuration in which both sides in the width direction are symmetrical with both sides in the width direction of the first elastic body, and the second elastic body and the first elastic body having such a configuration are In one embodiment in which they are arranged in contact with each other in the direction, the side surface of the second elastic body and the side surface of the first elastic body match each other and engage in close contact, as illustrated in the embodiment shown in FIG. Therefore, the upper part of the wave on the side surface of the first elastic body matches the lower part of the wave on the side surface of the second elastic body, and the lower part of the wave on the side surface of the first elastic body matches the upper part of the wave on the side surface of the second elastic body. In this matched state, the contact area between the first elastic body and the second elastic body is large. Therefore, when either the first elastic body or the second elastic body contracts in the thickness direction, the frictional force between the one and the other causes the other to contract in the thickness direction as well. In particular, when the first elastic body and the second elastic body are made of an elastic material such as urethane foam that is highly elastic and easily adheres to each other, the other body is likely to interlock with each other. Further, in one embodiment in which the side surface of the first elastic body and the side surface of the second elastic body are engaged with each other, the through hole is less likely to buckle as exemplified in the embodiment described later. Therefore, buckling of the coil spring inserted into the through hole can also be suppressed.

On the other hand, the second elastic body has a configuration in which both side surfaces in the width direction are axially symmetrical with both side surfaces of the first elastic body, and the second elastic body and the first elastic body having such a configuration are mutually disposed in the width direction. In other forms of arrangement in contact,
As exemplified in the embodiments described below, the wave portions on the side surface of the second elastic body and the wave portions on the side surface of the first elastic body are simply in contact with each other. In this case, the corrugated portion on the side surface of the second elastic body and the corrugated portion on the side surface of the first elastic body are not bonded to each other, and a through hole is formed between them. The bonding area between the first elastic body and the second elastic body becomes smaller. Therefore, even if either the first elastic body or the second elastic body contracts in the thickness direction, the other does not move much.

(Example) (1) First Example (Structure) As shown in FIG. 1, the pine tress according to the first example consists of an elastic foam 1 and an exterior body 5 that covers the elastic foam 1. . Here, the direction of arrow A shown in FIG. 1 indicates the length direction of the pinetress, and the direction of arrow B indicates the width direction of the pinetress.

First, to explain the elastic foam 1, that is, the elastic foam 1 has a first elastic body 2 and a second elastic body 3 arranged in the width direction of the first elastic body 2 and the second elastic body 3. It is formed.

In FIG. 3, reference numeral 10 denotes a corrugated plate-shaped elastic wave band. This elastic wave band 10 is made of urethane foam and has a wave shape with a certain pitch, and both side surfaces 10a and 10b are symmetrical to each other. , the thickness t in the width direction is approximately constant. On the other hand, in FIG. 3, reference numeral 11 is an elastic wave band in the form of a corrugated plate. This elastic band 11 is made of urethane foam, is wavy at a constant pitch like the elastic wave band 10, and has undulations on both sides. The surfaces are symmetrical, and the thickness in the width direction is almost constant.

As shown in FIG. 3, the two elastic wave bands 10 are made to face each other, so that the wave parts 100 of the elastic wave bands 10 are brought into contact with each other, and the wave parts 101 are made to face each other. Thus, the first elastic body 2 is formed. Therefore, the first
As shown in FIG. 2, the elastic body 2 has both side surfaces 20
and 21 are wavy in an axially symmetrical manner with respect to the axis M, and the width thereof is wide and narrow, and is continuous, and has a through hole 6 in the wide width part.

On the other hand, as shown in FIG.
By making the wave portions 110 of 1 face each other and the wave portions 111 of the wave portions 111 facing each other,
A second elastic body 3 having a through hole 6 is formed in the wide portion. Therefore, as shown in FIG. 3, the second elastic body 3 has both side surfaces 30 and 31 symmetrical in shape with the side surfaces 20 and 21 of the first elastic body 2. In order to form symmetry in this way, the side surface 30 of the second elastic body 3 and the first
It is in close contact with the side surface 20 of the elastic body 2.

In this state where they are in close contact with each other, when either the first elastic body 2 or the second elastic body 3 is pressed in the thickness direction and contracts, the other will also move in conjunction with this due to the friction between them. shrinks in the thickness direction.
As a result, the region where the first elastic body 2 and the second elastic body 3 match and come into close contact becomes less likely to sink, and the elasticity becomes harder than other regions. Note that this part is set so that it is located exactly at the waist when a person lies on a pinerest.

Note that a coil spring 7 is inserted into the through hole 6 described above. This coil spring 7 has a drum shape, and as shown in FIG. 2, both upper and lower end portions 7a and 7b have a larger diameter than the center portion 7c.

Next, to explain from the exterior body 5, that is, the exterior body 5
includes a stretchable protector 50 that is applied to and covers the upper and lower surfaces of the elastic foam 1;
A covering member 51 made of urethane foam and having elasticity is applied to both ends in the width direction (direction of arrow B) to cover.
, a stretchable covering 52 made of urethane foam that is applied to and covers both ends of the elastic foam 1 in the length direction (direction of arrow A); It consists of a skin member 53 having elasticity. Here, the protector 5
0 is mainly formed of a sheet made of felt, and is fixed to the elastic foam body 1 by a coil spring 7 located on the outside via a bog ring 51a. Note that lead 54 is provided on the skin member 53.

(Operations and Effects) In this first embodiment, as described above, the portions where the first elastic body 2 and the second elastic body 3 match and come into close contact are as follows:
It is less likely to sink than other parts, and has the highest elasticity among pine trees. As mentioned above, this matching part is set to be located exactly at the waist of a person when the person lies down on the pinerest. Therefore, in the pine tress according to the first embodiment,
It can prevent your lower back from sinking too much.

Further, since the drum-shaped coil spring 7 is used in the first embodiment, both the upper and lower ends 7a and 7b of the coil spring 7 are connected to the openings at both the upper and lower ends of the through hole 6, as shown in FIG. It hangs on the periphery of the. Therefore, the coil spring 7 can be prevented from coming off.

By the way, the back of a person is quite uneven in the direction of the height, including the head, back, waist, and legs, and in order to make the pinerest adhere to the uneven back of a person, it is necessary to use elasticity in the length direction of the pinetress. It is preferable that the degrees be independent. On the other hand, it is preferable that the elasticities are linked in the width direction of the pine tress. The main reason for this is that when a person sinking into a pine tress turns over on the pine tress, they move in the width direction of the pine tress, so it is easier to turn over if the elasticity is linked in the width direction. . In this way, the pinerest on which a person lies is required to have independent elasticity in the length direction of the pinerest (direction of the person's height), and interlocking elasticity in the width direction of the pinerest (direction of the shoulder width of the person). It is required to have elasticity with properties.

In this regard, in this embodiment, as shown in FIG.
By arranging a large number of first elastic bodies 2 and second elastic bodies 3 in the width direction of the first elastic bodies 2 and second elastic bodies 3, the length dimension (dimension in the direction of arrow A) of the pine tree can be reduced. It is secured. Therefore, compared to the conventional structure in which a cut is formed in a single piece of elastic foam and a coil spring is inserted into a through hole formed by widening the cut, it is possible to make the elasticity of the pine tress independent in the length direction of the pine tress. It becomes easier. Further, in this embodiment, as shown in FIG. 1, the length direction of the first elastic body 2 and the second elastic body 3 corresponds to the width direction of the pinerest (direction of arrow B).

Therefore, in this embodiment, the interlocking of the elasticity in the width direction of the pinerest can be ensured.

(Second Embodiment) A pinerest according to a second embodiment is shown in FIG. This pinerest has basically the same structure as the pinerest according to the first embodiment, and has the same functions and effects. However, over a considerable area of the pine tress, the first elastic foam 2 and the second elastic foam 3 are arranged alternately, and on both sides of the first elastic body 2 and on both sides of the second elastic body 3. The surfaces match and interlock with each other.

With this configuration, even when the elastic foam 1 contracts in the thickness direction, the through hole 6 does not buckle much, and therefore the buckling of the coil spring 7 inserted through the through hole 6 is minimized. can be suppressed without impairing the cushioning properties of the pine tress. Benefits accrue.

Of course, even in the second embodiment with such a configuration, the elasticity in the width direction (direction of arrow B) of the pine tress is linked, and the elasticity in the longitudinal direction of the pine tress (direction of arrow A) is interlocked.
The elasticity of the direction) is independent.

[Effect of the invention] In the pinerest according to the invention configured as described above, the second elastic body and the first elastic body, whose both sides are symmetrical with the both sides of the first elastic body, are arranged in the width direction thereof. In one form of arrangement, as mentioned above,
The first elastic body and the second elastic body are easily interlocked. On the other hand, in another form in which a second elastic body and a first elastic body whose both sides are axially symmetrical with both sides of the first elastic body are arranged in the width direction, the first elastic body and It is difficult to interlock with the second elastic body. Therefore, the elasticity of the part of one form can be made different from the elasticity of the part of the other form. Further, in one embodiment, buckling of the coil spring inserted into the through hole can be suppressed as described above, which is effective in ensuring cushioning properties.

[Brief explanation of the drawing]

1 to 3 show a first embodiment of the present invention,
Fig. 1 is a perspective view of the main parts of the pine tress with one part cut away, Fig. 2 is a perspective view of the first elastic body, and Fig. 3 is a perspective view of the first elastic body and the structure that is symmetrical thereto. FIG. 4 is a perspective view of the main part in a state where the second elastic body is aligned with the second elastic body, and FIG. 4 is a perspective view of the main part showing the second embodiment, with one part cut away. 1 is an elastic foam, 10 is an elastic wave band, 11 is an elastic wave band, 2 is a first elastic body, 3 is a second elastic body, and 5 is an exterior body.

Claims (1)

[Claims for Utility Model Registration] (1) A thick plate-shaped elastic foam body having a large number of through holes extending in the thickness direction and a coil spring inserted into at least a portion of the through holes; and the elastic foam body. In the pine tress, the elastic foam has an axially symmetrical wavy shape on both sides in the width direction, the width is wide and narrow, and the width is continuous, and the wide width part has the through hole. a first elastic body, and both side surfaces in the width direction are symmetrical in shape or axially symmetrical with both side surfaces of the first elastic body, the width is continuous with narrow and wide, and the through hole is formed in the wide width part. and a second elongated elastic body with a long length, and a large number of the first elastic bodies and the second elastic bodies are arranged in contact with each other in the width direction thereof. Pine tress. (2) The first elastic body is formed of two elastic wave bands having substantially constant thickness in the width direction with both side surfaces symmetrical to each other, and the tops of the waves are in contact with each other, and the second elastic body The pinerest according to claim 1, wherein the two elastic wave bands are arranged in opposite directions to the two elastic wave bands constituting the first elastic body.