JPH0547Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to an improvement of a pocket coil installed in a bedrest, etc.

[Conventional technology]

Conventionally, when installing a large number of coil springs in a forest inside a pine tress, each coil spring is divided into a bag body in order to maintain the upright posture of the coil springs and to prevent friction between adjacent coil springs. A stored pocket coil is used, and as shown in FIG. 4, such a pocket coil is made by winding the long edges 102a and 102b of a strip of cloth 102 into a cylinder so as to overlap each other. A large number of storage portions 106 are equally divided in the longitudinal direction by dividing portions 104 that weld the joined side surface portion 100a and the other side surface portion 100b in an intermittent pattern in a direction orthogonal to the longitudinal direction. Bag body 100 with compartments formed
There is also a coil spring 108 that is housed in each of the storage sections 106, with the axis O being perpendicular to the longitudinal direction of the bag body 100.

This pocket coil has the long edges 102a and 102b of the band-like cloth 102 constituting the bag body 100 overlapping each other at the side surface 100a.
The end portions 106a of each storage portion 106 located at both ends of the coil spring 108 have a flat shape without a continuous protrusion in the longitudinal direction due to the welding margin of the band-like cloth 102.

[The problem that the idea attempts to solve]

However, according to the above conventional structure, the bag 100 is
Due to the elastic load of the coil spring 108, the non-bonded overlapping portion of the long edges 102a and 102b located on the side surface 100a is deformed so as to open, and as a result, the coil spring 108
This may make the patient's posture unstable, and the comfort of sleeping when actually lying down on the pinerest may be impaired.

In view of these points, the present invention was developed with the object of reliably maintaining the posture of the coil spring inside the bag and improving the sleeping comfort of the pinerest.

[Means to solve the problem]

In order to solve the above problems, the present invention involves wrapping the long edges of a single strip of cloth into a cylinder so that they overlap each other, and welding the overlapped side surface and the other side surface at equal intervals in the longitudinal direction. In the pocket coil, the pocket coil is made up of a bag having a plurality of compartments formed by compartments, and a coil spring stored in each of the compartments, one coil spring being stored in each of the compartments with its axis perpendicular to the longitudinal direction of the bag. The edges are welded to each other by one welding part for each storage part or by a pattern of welding parts interrupted in the longitudinal direction. Further, in this configuration, non-welded portions may be provided at both ends of the partition between the storage portions.

[Effect]

According to the present invention, since the overlapping long edges of the strips are welded to each other, one side of the bag will not open due to the load of the coil spring in each storage section, and By providing non-welded parts at both ends in the direction orthogonal to the longitudinal direction of the bag in the partition between the parts, the band-shaped cloth constituting the bag is stretched toward both sides in the non-welded parts. Therefore, no protrusion is formed on the bag in a direction perpendicular to its longitudinal direction.

〔Example〕

Hereinafter, the pocket coil of the present invention will be explained with reference to the illustrated embodiments.

FIG. 1 shows a first embodiment, in which reference numeral 10 indicates a sheet of belt-like cloth 12 made of non-woven fabric, which is wound into a cylindrical shape so that both long edges 2a and 2b overlap each other. A large number of storage portions 16 are formed by partitioning portions 14 that are welded to the side surface portion 10a on the side where the long edges 2a and 2b are overlapped and the other side surface portion 10b in an intermittent pattern in a direction perpendicular to the longitudinal direction. The bag body, reference numeral 18 in the figure, has an axis O that corresponds to the bag body 10.
One coil spring is housed in each of the housing sections 16 in an orientation perpendicular to the longitudinal direction of the spring. The long edges 12a and 12b of the band-like cloth 12 overlapped with each other at the side surface 10a are welded together at welding parts 20 in an interrupted pattern in the longitudinal direction of the bag body 10, and each storage part 16 is divided and formed. Non-welded portions 22 are provided at both ends in the vertical direction (both ends in the width direction of the bag body 10) of the partitioned portion 14.

According to the above configuration, the long edges 12a, 12b of the band-like cloth 12 overlapped on the side surface 10a of the bag body 10.
Since they are welded together at the welded part 20, the long edges 12a and 12b will not open when the coil spring 18 expands and the bag body 10 is expanded. As the strength of the bag body 10 increases, the coil spring 18
will not curve toward the side surface portion 10a and become unstable.

In addition, since both ends of the partitioning part 14 that divides each storage part 16 are non-welded parts 22, when it is actually attached to the pinerest, as shown in FIG. Since the band-like cloth 12 constituting the bag body 10 is compressed toward both sides, the top and bottom surfaces of the bag body 10 can be made flat. That is, for example, when the compartment 14 is welded to both ends of the bag body 10 in the width (up and down) direction, as a conventional example, as shown by reference numeral 110 in FIG. In contrast to this, a protrusion that protrudes vertically is formed.
According to the configuration of the above embodiment, no such projections are formed on the upper and lower surfaces of the bag body 10, which greatly contributes to improving sleeping comfort.

Next, FIG. 3 shows a second embodiment of the present invention, which differs from the first embodiment in that both long edges 12a and 12b of the band-like cloth 12 are isolated for each storage section 16. The difference is that welding is performed at one welding part 20', and the effect is almost the same as that described above.

[Effect of idea]

As described above, according to the present invention, since the overlapping long edges of the band-like cloth are welded together, the strength of the bag body is improved and the posture of the coil spring is stabilized. By providing non-welded portions at both ends of the compartment, no protrusions are formed on the top and bottom surfaces of the bag body, making it possible to make the feel of the pinerest with the pocket coil attached to it extremely excellent. .

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway perspective view showing a first embodiment of the present invention, and FIG. 2 is a perspective view of the first embodiment of the invention.
3 is a partially cut away perspective view showing a second embodiment of the present invention, and FIG. 4 is a partially cut away perspective view showing a conventional example. 10...Bag body, 12...Band-like cloth, 12a, 12
b...Long edge, 14...Divided part, 16...Storage part, 18...Coil spring, 20, 20'...
...welded part, 22...non-welded part.

Claims (1)

[Claims for Utility Model Registration] 1. Sections in which the long edges of a piece of band-like cloth are rolled into a cylinder so as to overlap each other, and the side surface of the overlapped side and the side surface of the other side are welded at equal intervals in the longitudinal direction. In a pocket coil consisting of a bag body having a plurality of compartments defined by sections, and a coil spring stored in each of the housing compartments, one coil spring having an axis perpendicular to the longitudinal direction of the bag body, the long edges are welded by one welding part for each storage part or by welding parts in the longitudinally discontinuous pattern. 2. The pocket coil according to claim 1, characterized in that non-welded portions are provided at both ends of the partition between the storage portions.