JP2000051009A - Spring structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress coil springs arranged in a short side direction out of a lot of coil springs constituting a spring structural body from being bent exces sively. SOLUTION: This spring structure 10 formed by arranging a lot of coil springs 11 having annular ends 11b, 11c in both sides of the coils 11a into a plane rectangular shape and connecting the annular ends 11b, 11c of the coil springs 11 arranged longitudinally by helical wires 12, 12 is formed by providing a suppression means suppressing the bending of the coil springs 11, 11 adjoining with each other in the short side direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spring structure used for a mattress or the like.

[0002]

2. Description of the Related Art Conventionally, as a well-known spring structure, a large number of coil springs having annular end faces at both ends of a coil portion are arranged in a rectangular shape in a plane, and are arranged in a longitudinal direction. Are connected by helical wires, and an edge frame formed by a steel wire is arranged on the upper and lower peripheral edges, and the upper and lower annular end faces of each coil spring are connected to this edge frame. Was configured.

[0003]

In the above-mentioned conventional spring structure, the coil springs adjacent to each other in the longitudinal direction are connected to each other by a helical wire in a contact state. Because they are separated without being connected, when a load is applied when using a mattress, these coil springs arranged in the short direction are excessively bent, making it uncomfortable to sleep, or the coils adjacent to each other. There is a problem that the springs rub against each other to generate a squeak sound.

Accordingly, the present invention has been made to solve the above-mentioned problem, and a specific coil spring does not excessively bend, a stable cushioning property can be maintained for a long period of time, and a squeak sound is generated. It is an object of the present invention to provide an improved spring structure so as not to do so.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a plurality of coil springs having annular end faces at both ends of a coil section in a rectangular shape in a plane, and the coil springs arranged in the longitudinal direction. A spring structure formed by connecting the ring end surfaces with a helical wire, wherein a spring suppressing means for suppressing bending of coil springs adjacent to each other in the short direction is provided.

The restraining means is a fastener having a pair of plate-like members, and the pair of plate-like members sandwich both annular end surfaces of coil springs adjacent to each other.

[0007] The restraining means is a fastener having a plate-shaped portion joined to the upper surfaces of both annular end faces of the coil springs adjacent to each other and a connecting piece portion connecting the helical wires adjacent to each other. is there.

It is preferable that the fastener be detachably provided, and furthermore, a cushioning material such as a felt ground is provided on a contact surface with the coil spring.

With this configuration, it is possible to prevent each coil spring from being excessively bent when receiving a load, and to maintain an appropriate return elasticity of each coil spring for a long time.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a spring structure according to the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing the mattress in partial cross-section, and a spring structure 10 is provided inside the mattress 1.
The spring structure 10 is configured by arranging a large number of hourglass-shaped coil springs 11 each having annular end surface portions 11b and 11c having the same diameter formed at both ends of a coil portion 11a in a rectangular shape in a plane. Each coil spring 11
The upper and lower annular end surfaces 11b and 11c are connected to each other by helical wires 12 and 12, respectively. Also,
At the peripheral edge, there are provided edge frames 13, 13 formed of steel wires so as to surround the coil springs 11, and the upper and lower rings of these edge frames 13, 13 and the coil springs 11 located at the peripheral edge. The end faces 11b and 11c are joined by a clip 14.

Reference numeral 20 denotes a fastener as a restraining means for restraining the coil spring 11 from bending. The fastening device 20 includes a pair of upper and lower plate members 21a and 21b, as shown in FIGS.
The lower plate-like member 21b is formed of a rectangular metal plate having a length straddling both annular end surfaces 11b, 11b on the upper portions of the coil springs 11, 11 adjacent to each other.
In order to avoid a connecting portion 11d between the a and the annular end surface portion 11b, the connecting portion 11a is formed into two parts on the left and right sides. Small holes 22 are formed at four corners of the upper plate member 21a, and screw holes 23 are provided corresponding to the small holes 22 of the lower plate member 21b and the upper plate member 21a. Further, a felt material 25 as a cushioning material is adhered to the lower surface of the upper plate member 21a and the upper surface of the lower plate members 21b, 21b, respectively. The noise is prevented from being generated, and the slip is prevented.

The fastener 20 thus formed is shown in FIG.
As shown in FIG. 3, the upper plate-like member 21a is placed so as to straddle both annular end surfaces 11b, 11b of the coil springs 11, 11 adjacent to each other in the short direction of the spring structure 10, and the lower plate-like member 21b, 21b are clamped so as to avoid the connecting portion 11d between the coil portion 11a and the annular end surface portion 11b, and the screws 24 are tightened to be securely clamped by the felt base 25, and both upper annular end surfaces are formed. 11
b and 11b are connected. Then, bending of the coil springs 11, 11 adjacent to each other in the short direction of the spring structure 10 is suppressed. In addition, as shown in FIG. 1, the fastening device 20 is disposed at least in a portion where a load is applied when the mattress 1 is used.

The mattress 1 in which the spring structure 10 in which the fasteners 20 are disposed as described above is installed is provided with the respective coil springs arranged in the transverse direction by the plate members 21a and 21b of the fasteners 20. Excessive flexing of the ring 11 is suppressed, and the two annular end faces 11b, 11b do not collide with each other and no squeak noise is generated.

FIGS. 5 to 8 show a fastener according to another embodiment as a restraining means. The fastening device 20a according to the present embodiment includes a plate-shaped portion 26 having a length extending over the upper surfaces of both annular end surfaces 11b and 11b of the coil springs 11 and 11 adjacent to each other in the short direction of the spring structure 10. Connecting piece 2 for connecting adjacent helical wires 12
7 and 27 are provided to form a substantially cross-shaped plane.
Fitting portions 27a, 27b are formed at the ends of the connecting pieces 27, 27 so as to be bent downward and inward in a semicircular shape.
A handle piece 28 extends from the tip of one fitting portion 27b. Further, a felt base 25 as a cushioning material is stuck on the entire lower surface of the fastening device 20a.

The fastener 20a thus formed is connected to one of the helical wires 12, 12 which are adjacent to each other at an appropriate position on the upper surface of the spring structure 10 as shown by a chain line in FIG.
7 and the other connecting piece 2 in this state.
The fitting portion 27b is fitted to and connected to the other helical wire 12 so as to push down the handle piece 28 of FIG.
As a result, as shown in FIGS. 6 and 8, both ends of the plate-shaped portion 26 are adjacent to each other in the short direction.
It can be firmly attached in a state of being joined to the upper surfaces of the annular end surfaces 11b, 11b. For this reason, the coil springs 11, 11 adjacent to each other in the short direction do not excessively bend, and the spring structure 10 can maintain a stable cushioning property over a long period of time. Further, the fastening device 20a can be easily removed simply by lifting the handle piece 28.

The fasteners 20 and 20a are not limited to use for a new spring structure 10, and may be used, for example, in a used article in which coil springs arranged in the short direction lose the resilient elasticity. By mounting the spring component on the spring component, the component can be regenerated, and a used spring component can be used in the same manner as a new spring component.

[0017]

As described above, according to the present invention, a large number of coil springs each having an annular end surface at the upper end of a coil portion are arranged in a rectangular shape, and the annular end surface at the top of each coil spring in the longitudinal direction. In the spring structure formed by connecting the helical wire, by providing the suppression means for suppressing the bending of the coil springs adjacent to each other in the short direction on the upper surface, when used inside the mattress, Even if a load is applied to the coil springs arranged in the lateral direction, the coil springs do not bend excessively, and a stable cushioning property can be maintained for a long period of time.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a mattress in which a spring structure according to the present invention is provided in a partially sectioned manner.

FIG. 2 is an enlarged perspective view of a main part of the present invention.

FIG. 3 is an exploded perspective view of the fastener.

FIG. 4 is a sectional view of a main part of FIG. 2;

FIG. 5 is a perspective view of a fastener according to another embodiment.

FIG. 6 is a perspective view of a main part in a state where the fastener of FIG. 5 is provided on a spring structure.

FIG. 7 is a sectional view of a main part of FIG. 6;

FIG. 8 is a sectional view of a main part of FIG. 6;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Spring structure 11 Coil spring 11a Coil part 11b, 11c Annular end face part 12 Helical wire 20, 20a Fastener (suppression means) 21a, 21b Plate member 26 Plate member 27 Connecting piece

Claims (3)

[Claims] 1. A spring structure formed by arranging a large number of coil springs having annular end surfaces at both ends of a coil portion in a plane rectangular shape, and connecting the annular end surfaces of the coil springs arranged in the longitudinal direction with a helical wire. A spring structure comprising: a body that includes a restraining unit that suppresses bending of coil springs adjacent to each other in the short direction. 2. The fixing device according to claim 1, wherein the restraining means is a fastener having a pair of plate members, and the pair of plate members sandwich both annular end surfaces of the coil springs adjacent to each other. The spring structure according to claim 1, wherein 3. The fastening means comprises a plate-shaped part joined to the upper surfaces of both annular end faces of the coil springs adjacent to each other and a connecting piece part connecting the helical wires adjacent to each other. The spring arrangement according to claim 1, wherein: