JPH0515804Y2 - - Google Patents

Description

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

BACKGROUND OF THE INVENTION There are generally two types of spring connection structures for beds: hourglass-shaped springs and barrel-shaped springs. Each of these spring connection structures has advantages and disadvantages when used in beds.

In a normal bed spring structure, a drum-shaped spring is made by winding a hard steel wire with a thickness of 2.3 to 2.5 mm into a drum shape with an upper and lower circular frame of diameter 75 to 91 mm and height of 130 to 150 mm. These are screwed together using a hard steel helical wire with a wire diameter of 1.3 to 1.4 mm. Although it is possible to increase the stiffness and elasticity of the hourglass-shaped spring connection structure according to body pressure, it is difficult to obtain a cushion with soft elasticity by increasing the number of springs, especially for double-sized pine tresses. However, there are drawbacks such as the entire spring structure shaking when turning over. In the barrel-shaped spring connection structure, the barrel-shaped spring is made by winding hard steel wire with a wire thickness of 1.6 to 1.8 mm into a barrel shape with a diameter of 40 mm and a height of 180 mm at the top and bottom of the spring.

When used in a bed, the barrel-shaped springs are placed in series in a long cylindrical bag made of non-woven fabric, and the non-woven fabric bag is then thermo-compressed or sewn. This spring connection structure using barrel-shaped spring rows covered with non-woven fabric is resistant to sideways falling, but has the disadvantage that more barrel-shaped springs must be used because the spring wire is thin. be. Making the spring wire thicker has the disadvantage of making the nonwoven fabric surrounding it more susceptible to damage.

Problems to be Solved by the Invention As described above, the drum-shaped spring connection structure and the barrel-shaped spring connection structure each have different advantages and disadvantages. Therefore, the present invention was made to overcome the problems of the conventional spring structures, and to compensate for the disadvantages of both spring structures with their advantages, and to make the most of the advantages, it is possible to adjust the pressure according to the body pressure applied to the bed. The purpose is for both springs to respond jointly.

Means for Solving the Problems In order to achieve the above object, a common drum-shaped spring connection structure incorporating a barrel-shaped spring was adopted. To do this, barrel-shaped springs are lined up in series at regular intervals, wrapped in a long cylindrical bag made of non-woven fabric, and both sides of the bag are heat-pressed to secure each barrel-shaped spring, or sewn together using a sewing machine to form a barrel shape. Create a row of springs. The barrel-shaped spring rows are assembled in the interval between the drum-shaped spring rows of the drum-shaped spring connection structure, and both spring rows are connected and fixed at the upper and lower surfaces using C-ring clips, respectively. In this case, each barrel spring is required to be centered among four neighboring hourglass springs.

Operation As described above, the composite spring connection structure of the present invention has rows of hourglass-shaped springs and rows of barrel-shaped springs arranged alternately, so that both springs are evenly distributed in the structure. Therefore, this spring connection structure has significantly increased elasticity and its lateral vibration is suppressed.

Examples Examples will be described with reference to the drawings. A suitable number of hourglass-shaped springs 1 shown in FIG. 1 are lined up in contact with each other in the longitudinal direction as shown in FIG. The contact portions of the upper and lower circular frames of the springs 1 are connected by screwing with helical lines 3 in the direction, and the springs 1 are wrapped around the upper and lower surfaces of this spring array, surrounding the frame line 4. The contact portion between the circular frame and the frame line 4 is fixed with a clip 5 to form an hourglass-shaped spring connection structure. As shown in Fig. 2, the diameter of the upper and lower circular frames of the barrel-shaped spring 2 is smaller than the diameter of the circular frame of the hourglass-shaped spring 1, and the diameter becomes thicker toward the middle, giving the overall shape of a beer barrel. This is why it gets its name, and the thickness of the lines is somewhat thinner than that of the drum shape. As shown in FIG. 4, a suitable number of barrel-shaped springs 2 are arranged in series, and in this case, the distance between the centers of each adjacent barrel-shaped spring 2 is made equal to the length of the diameter of the circular frame of the hourglass-shaped spring 1. The barrel-shaped spring 2 having this arrangement is housed in a long cylindrical bag 6 made of non-woven fabric as shown in FIGS.
The barrel-shaped spring rows 8 are made by thermally pressing the two sides together or sewing them together using a sewing machine to create longitudinal fusion lines or seams 7. As shown in FIGS. 8 and 9, the above-mentioned barrel spring rows 8 are installed at intervals between the drum spring rows of the drum spring connection structure, and the barrel springs 2 are connected to the four drum springs located in close proximity. A composite spring connection structure is formed by arranging the spring 1 so that it is located at the center of the spring 1 and connecting it to the circular frames on the upper and lower surfaces of the hourglass spring 1 using C-ring clips. Figure 10 is X-X in Figure 8.
A side view of the composite spring connection structure cut along a line suggests that the hourglass spring 1 and the barrel spring 2 complement each other in shape and respond equally to pressure. In Fig. 8, the entire elasticity of the spring connection structure is improved by incorporating barrel-shaped spring rows 8 into the entire interval between the hourglass-shaped spring rows. If there is no need to improve the elasticity, as shown in FIG. 9, for example, barrel-shaped spring rows may be incorporated in the spacing between the drum-shaped spring rows in the center of the spring connection structure to strengthen the elasticity of that portion. can.

Effects of the invention Since this invention is constructed as described above, the drum-shaped spring and the barrel-shaped spring compensate for each other's shortcomings and take advantage of their strengths to the fullest, allowing both to work together according to the body pressure. The shaped spring suppresses the vibration of the drum-shaped spring and provides an ideal spring structure for a good and deep sleep.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of an hourglass-shaped spring, Fig. 2 is a perspective view of a barrel-shaped spring, Fig. 3 is a schematic perspective view of a part of an hourglass-shaped spring connection structure, and Fig. 4 is a series arrangement at regular intervals. FIG. 5 is a side perspective view of a long cylindrical bag made of non-woven fabric, and FIG. 6 is a schematic plan view of the barrel-shaped springs shown in FIG. 4 wrapped in the cylindrical bag shown in FIG. 5. Side surfaces of a row of barrel-shaped springs, in which both sides of the cylindrical bag are sewn by thermocompression bonding or a sewing machine so that the barrel-shaped springs are maintained at a constant interval, and a part of the bag is cut out to reveal the barrel-shaped springs inside. Fig. 7 is a schematic plan view of the tubular bag shown in Fig. 6 with the upper part cut away to reveal the barrel spring inside; FIG. 9 is a schematic plan view showing barrel-shaped spring rows incorporated into the spacing between the drum-shaped spring rows in the center of the drum-shaped spring connection structure, and FIG. The figure is a schematic side view showing the arrangement of the drum-shaped spring and the barrel-shaped spring in a section cut along the line X--X in FIG. 8. 1... drum-shaped spring, 2... barrel-shaped spring, 3... helical wire, 4... frame line, 5... clip, 6... cylindrical bag of non-woven fabric, 7... thermocompression bonding or perforation Seam 8...A row of barrel-shaped springs wrapped in a cylindrical bag made of non-woven fabric.

Claims (1)

[Scope of utility model registration request] Several rows of springs made by touching an appropriate number of drum-shaped springs in the longitudinal direction are arranged in parallel at regular intervals, and these spring rows are connected to the upper and lower circular frames of the drum-shaped springs by horizontal helical lines. A spring connection structure in which the contact portions of the springs are connected by screwing, the frame lines are encircled around the upper and lower surfaces of the spring array, and the contact portions between the circular frame of the spring and the frame line are clipped. In this process, an appropriate number of barrel-shaped springs are arranged in series at intervals as shown below, and these are wrapped in a long cylindrical bag made of non-woven fabric. The barrel-shaped spring rows formed by fixing the barrel-shaped springs with seams are assembled in the interval between the drum-shaped spring rows of the drum-shaped spring connection structure, and each barrel-shaped spring is connected to the center of the four nearest drum-shaped springs on both sides. The cylindrical bag of non-woven fabric contacts the upper and lower circular frames of each hourglass-shaped spring and is connected to a C-ring clip to connect a composite spring consisting of an hourglass-shaped and barrel-shaped spring. Structure.