JP2588661Y2 - Pocket coil spring seat - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a pocket having a coil spring seat by arranging coil springs in a continuous row of bags used as a mattress cushion body in a sheet shape. The present invention relates to improvement of a spring seat.

[0002]

2. Description of the Related Art The applicant has improved the point that each spring is too soft against a concentrated load without deteriorating the characteristic that each spring bends against the load of a pocket coil.
Japanese Patent Application Laid-Open No. 63-197454 discloses a configuration in which a plurality of pocket spring rows each containing a coil spring are arranged in a flat plate shape in a plurality of continuous bags, and a urethane foaming liquid is injected into the bag containing the coil springs. A device that performs urethane foaming was devised.

[0003] However, in a pocket cossle spring seat, a coil spring is accommodated in a bag that is continuous in a row, and is formed into a flat sheet by meandering a plurality of times. Are not connected, and after arranging them in a flat plate shape, a method is used in which a string is connected to the center in the height direction of adjacent rows.

[0004]

In the case of the above-mentioned connecting method using a string, a needle is stabbed in order to pass the string into the bag in which the korsle spring is housed. There was a drawback that productivity was not improved due to troublesome work if the material was damaged or redo, and the mattress was liable to lose its shape due to a broken string.

SUMMARY OF THE INVENTION It is an object of the present invention to form a pocket coil spring seat that can easily connect the rows of bags containing adjacent coil springs that are not connected to each other and that does not lose its shape. The point is to solve the point that is too soft against the concentrated load at the same time.

[0006]

[MEANS FOR SOLVING THE PROBLEMS] A plurality of continuous bags (1)
(1 ') ... Coil spring inside (2)
(2 ') Pocket spring row containing ... (3)
Are arranged in a plate shape, and the pocket spring row (3)
(3 ') A flexible urethane foam (4) in which bags (1), (1'), ... each containing a plurality of arbitrary coil springs (2) are individually formed. (4 ′) ········································································································································· Bag (1) (1 ') ...
Urethane foam which discharges adjacent unconnected pocket spring rows (3) (3 ′) through the small holes (5) (5 ′). A pocket coil spring seat characterized by being foamed and connected by a liquid.

[0007]

[Function] The present invention is a pocket spring row (3)
Any number of coil springs (2) (2 ')
When the urethane foaming liquid is injected into the bag (1) (1 ′)... That accommodates the small holes (5) of the bag (1) (1 ′). ) (5 ') ... the urethane foaming liquid is discharged from the bag (1) while foaming due to the foaming pressure, and is fixed to the bag (1) of the adjacent row of pocket springs (3). The foamed connection is made, and the flexible urethane foam () is contained in arbitrary plural bags (1) (1 ′)... In which the coil springs (2) (2). 4) (4 ′)... Can be formed, and at the same time, the pocket spring rows (3) (3 ′).

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 1, bags (1), (1 ')... The coil springs (2), (2 ')... Housed in the bags (1) (1')... Arranged in a sheet shape are barrel-shaped coil springs. Any of a plurality of bags (1) (1 ′)... Is filled with a soft urethane foam formed by foaming inside, and the soft urethane foams (4) (4 ′). ... Are foamed separately in the bags (1) (1 ′)..., So that the flexible urethane foam (4) (4 ′)
... It is easy to make the expansion ratios different,
A pocket coil spring seat having a cushion characteristic corresponding to the weight of each part of the human body can be easily manufactured by selecting a foaming location and a foaming magnification.

A pair of pockets (1) (1 ′)... Has a pair of pocket springs (3) (3 ′). It has small holes (4) and (4 '), and is discharged from the small holes (4) and (4') by the foaming pressure when the urethane foaming liquid injected into the bag (1) foams, and is adjacent to the urethane foaming liquid. It is fixed to the outside of the bag (1) of the pocket spring row (3) and is foam-connected.

FIG. 2 shows a pocket (1) (1 ') of the pocket coil spring seat of the present invention packed with a soft urethane foam (4) (4'). An example of such an arrangement is shown, in which a row of pocket springs in the central portion corresponding to the outer peripheral portion and the waist portion of the pocket spring seat (3)
(3 ') ..... Bags at intervals of one skipping (1) (1')
………………………………………………………………………………………………………………………………………………………………………………………………. ) ... The foaming ratio of the pocket spring is increased, and the elasticity of the center part of the pocket spring seat against the outer periphery and waist is increased while taking advantage of the characteristics that each of the coils of the pocket spring supports the load independently. However, the present invention is not limited to the example shown in FIG. 2 but includes soft urethane foams (4) (4 ′) in bags (1) (1 ′). And the expansion ratio can be arbitrarily set.

FIG. 3 is a partially enlarged view of FIG.
(1 ') Small pockets (5) (5') ... Pocket pocket row (3) (3 ') adjacent to urethane foam discharged from ...・ The bags (1) (1 ′)... Show the state of the foam connection, and the adjacent bags (1) (1 ′). It is possible to connect the pocket spring rows (3), (3 ')..., And a connection step between the pocket spring rows is not required, which leads to an improvement in productivity.

[0012]

[Effect of the Invention] By implementing the present invention, a bag (1)
(1 ') ... pocket spring row (3) (3') ... in the pocket spring seat can be connected at the same time when the urethane foaming liquid is foamed inside. Therefore, pocket spring row (3) (3 ') ...
This eliminates the need for a connection process between
Arranged pockets (1) (1 ′) of the pocket spring rows (3) (3 ′)... Coil springs (2) (2 ′). ····· Urethane foam inside and soft urethane foam (4) (4 ′) ···················································· Pocket spring It is possible to easily provide a pocket spring seat as a supporting elastic body corresponding to the weight of each body part while taking advantage of the above characteristics.

[0013]

[Brief description of the drawings]

FIG. 1 is a perspective view of a pocket coil spring seat with a part of a portion showing one embodiment of the present invention cut away.

FIG. 2 shows an embodiment of the present invention, in which pocket urethane foams (4) (4 ′)... Among pocket bags (1) (1 ′). FIG. 4 is an explanatory diagram showing a clogged array.

FIG. 3 is a partially enlarged view of FIG. 2;

[Explanation of symbols]

 1, 1 '... bag 2, 2' ... coil spring 3, 3 '... pocket spring row 4, 4' ... soft urethane foam 5,5 '... Small hole

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) A47C 27/04-27/07 A47C 27/14-27/20 A47C 23/04-23/057

Claims (3)

(57) [Scope of request for utility model registration] 1. A plurality of continuous bags (1) (1 ′)...
A row of pocket springs (3) each containing a coil spring (2) (2 ′)... Are arranged in a plate shape, and the pocket spring rows (3) (3 ′).・ Coil springs (2) (2 ') at arbitrary plural positions of ...
, In which soft urethane foams (4), (4 ′)... Are individually formed in bags (1) (1 ′). 1 ′)... A small hole (5) (5 ′) is provided in the middle of the height direction of soft urethane foam in the bag (1) (1 ′). Occasionally, adjacent unconnected pocket spring rows (3) (3 ′) are foam-connected by urethane foam liquid discharged from the small holes (5) (5 ′). Pocket coil spring seat 2. A flexible urethane foam (4) (4 ').
2. The pocket coil spring seat according to claim 1, wherein the expansion ratio of the pocket coil spring differs depending on the location. 3. A bag (1) (1) having at least one of the pocket spring rows (3) (3 ')... At the central portion corresponding to the outer peripheral portion and the waist portion of the pocket coil spring seat. ') ・ ・ ・ ・ ・ ・ Soft urethane foam inside (4)
3. The pocket coil spring seat according to claim 1, wherein (4 ') is formed by molding.