JPH0522128Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a spring connection structure for a bed which is composed of a barrel-shaped spring and an elastic plastic molding.

Conventional technology In the barrel-shaped spring connection structure for beds, the barrel-shaped spring is made of hard steel wire with a wire thickness of 1.8 to 2.0 mm, with a diameter of 42 mm at the top and bottom of the spring, and a diameter of 65 mm at the center of the spring. It is rolled into a barrel shape with a height of 180 mm and 6 turns. This is done by folding a wide non-woven fabric in half, wrapping each spring in it at regular intervals, and aligning spring rows with both edges of the non-woven fabric sewn between the springs. It is a structure in which parts are fixed with adhesive or thread. However, this structure has a small number of barrel-shaped springs, and naturally the space between the springs is wide, and the connection structure is made only of fabric, so it lacks stability, and even if there are more springs, the stability will not improve. In addition, the cushioning properties are soft and the springs are not tempered, so increasing the wire diameter to increase elasticity will increase metal fatigue and lower the yield point, making it impossible to obtain a spring structure with good durability. Furthermore, although conventional structures are resistant to lateral vibration, they lack stiffness when dealing with pressure. If the spring wire is made thicker to improve this problem, it has the disadvantage of easily damaging the nonwoven fabric surrounding it.

Furthermore, Japanese Utility Model Application Publication No. 57-126862 discloses a cushion body consisting of a first foam body in which a spring is buried concentrically with a recessed hole, and a second foam body that is inserted and filled into the recessed hole arbitrarily. has been done.

Japanese Utility Model Application Publication No. 56-101069 discloses a sponge mat in which springs are embedded in a sponge body at regular intervals vertically and horizontally.

Problems to be Solved by the Invention All of the conventional cushion bodies described in the gazette have a structure in which they are placed in a mold and foamed, so they require a huge mold cost and cannot be provided at a low price. Furthermore, the spacing between the springs is determined by the mold, and cannot be changed by changing the spring row.

In order to overcome the problems of the conventional spring connection structure, the present invention reduces the lateral vibration of the barrel-shaped spring array wrapped in non-woven fabric and increases the elasticity of the spring array in response to the body pressure applied to the bed. This is the purpose.

Means for Solving the Problems In order to achieve the above object, an appropriate number of barrel-shaped springs are placed in parallel in a long piece of non-woven fabric folded in half, and each spring is placed between each spring of the non-woven fabric so that the springs are in contact with each other. Sewing or gluing both edges of the part and its width to create a spring row that covers each spring independently, place an appropriate number of spring rows in parallel in the longitudinal direction, and connect the rectangular tube with its ridge line as a thin plate-like piece. A polyurethane elastic plastic molded product connected to each other is interposed between the rows of springs so that the rectangular tube is located at the center of the two opposing pairs of springs, and these are fixed together with adhesive. This spring connection structure for a bed is composed of a barrel-shaped spring array covered with a non-woven fabric and an elastic plastic molded product.

Function Since the spring connection structure of the present invention is constructed as described above, the elasticity can be easily changed by the spring row, and lateral vibration can be suppressed and the elasticity can be adjusted as desired. .

Examples Examples will be explained with reference to the drawings.
In the present invention, the barrel spring 1 has the shape shown in FIG. 1, and is wrapped in a nonwoven fabric 2 and compressed to some extent. The wire diameter of the spring 1 is 1.8 to 2.0 mm, the diameter of the upper and lower circular frames is 42 mm, the diameter of the central circular frame is 65 mm, the length is 180 mm, and the number of turns is 6. When wrapped in nonwoven fabric 2, it is compressed to a height of 145 mm.
FIG. 2 shows an appropriate number of barrel-shaped springs 1 arranged at regular intervals in the lower half of the width of the nonwoven fabric 2, as shown in the figure.
The upper half is folded downward and wrapped, and as shown in FIG. 3, the portion of the nonwoven fabric 2 between the springs 1 and the lower portion are sewn from the front and back to form a spring row 4 having seams 3. This sewing may be performed by heat sealing when the nonwoven fabric 2 is thermally welded. Fourth
The figure shows a polyurethane elastic plastic molding 5 inserted between the sides of the spring rows 4,
In FIG. 5, a plastic molding 5 is inserted between the sides of the spring row 4 and fixed with an adhesive.

In FIG. 6, a connecting structure consisting of a spring array 4 and a plastic molding 5 is fixed with a C-ring clip 7, with a frame line 6 surrounding the top and bottom surfaces. FIG. 7 shows a side view of the connected structure.

Effects of the invention As specifically explained above, the spring connection structure of the invention has the spring array 4 fixed together with the elastic plastic molding 5 using an adhesive, so there is no lateral vibration, and its elasticity can be easily changed. I can do it. Therefore, when turning over in bed, the vibration of the spring is suppressed to provide a comfortable and deep sleep, thereby providing an ideal spring connection body. In addition, since the manufacturing cost for the mold is small and the parts are also small, work efficiency is improved, which contributes to lower production costs.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of the barrel-shaped spring of the present invention which is somewhat compressed, Fig. 2 is a plan view of the barrel-shaped spring placed in parallel in the lower half of the width of a long nonwoven fabric, and Fig. 3 A side view of a row of springs made by folding the upper half of the width of a nonwoven fabric downward to form the part between each spring and both edges of the width. Figure 4 shows square tubes connected by thin plate-like pieces. FIG. 5 is a perspective view of a polyurethane elastic plastic molded product having a shape, and FIG. 5 is a plan view of the plastic molded product interposed between spring rows and fixed with adhesive, with a part of the nonwoven fabric on the upper surface cut away, and FIG. 7 is a schematic plan view of the spring connection structure of the present invention with a part of the nonwoven fabric removed, and FIG. 7 is a partial perspective view showing the side surface of the connection structure. 1... Barrel-shaped spring, 2... Non-woven fabric, 3...
Seam, 4... Spring row, 5... Elastic plastic molding, 6... Frame line, 7... C-ring clip.

Claims (1)

[Scope of utility model registration request] Place an appropriate number of barrel-shaped springs in parallel inside a long piece of non-woven fabric folded in half, and sew or glue the part between each spring of the non-woven fabric and both edges of that width so that each spring is in contact with each other. A suitable number of spring rows are placed in parallel in the longitudinal direction, and a polyurethane elastic plastic molded product in the shape of a rectangular tube connected with a thin plate-like piece is attached to the spring row. This square cylinder is interposed between two pairs of springs facing each other so that they are located at the center, and these are bonded and fixed together with an adhesive.A row of barrel-shaped springs covered with a non-woven fabric and an elastic plastic molded product are used. A spring connection structure for the bed.