JPS6015487Y2 - edge spring - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an edge spring provided at the periphery of a spring structure such as a pinerest.

For example, the spring structure used in pine tresses is
It is important to have soft cushioning properties, and for this reason, soft coil springs are used to constitute the spring structure.

However, with a spring structure having such a configuration, the peripheral part where the degree of interconnection between the coil springs is small is too soft compared to the central part, resulting in a loss of stability, making it difficult to actually utilize the spring structure effectively. Problems such as a reduction in the effective usable area and a tendency for the spring structure to sway laterally occur.

Conventionally, therefore, an elastic material having an appropriate hardness was attached to the periphery of the spring structure, or a torsion spring as shown in Japanese Utility Model Publication No. 56-44446 was provided.

However, in the former case, when the spring structure is compressed and deformed by a load, the elastic material buckles and protrudes from the circumferential surface of the spring structure, so that the reinforcing effect is not sufficient.

In addition, in the latter case, since the upper torsion bar and the lower torsion bar are only connected by a single oblique side, the upper and lower torsion bars tend to move laterally, which tends to cause the spring structure to sway horizontally. was there.

The present invention was developed based on the above circumstances, and its purpose is to create an edge that can reliably reinforce the periphery of the spring structure and prevent the spring structure from rolling. The purpose is to provide a spring.

An embodiment of the present invention will be described below with reference to the drawings.

In the figure, 1 is a support. This support body 1 is made up of a large number of crosspieces 3 arranged in a lattice pattern within a rectangular outer frame 2.

A spring structure 4 is provided on the upper surface of this support body 1,
A large number of edge springs 5 are provided at predetermined intervals around the periphery of the spring structure 4.

The spring structure 4 has a large number of hook-shaped coil springs 6 arranged side by side in a flat plate shape, and a frame line 7 is connected to the periphery of the upper surface of the coil springs 6 with clips 8... The lower end surface of the coil spring 6 is fixed to the upper surface of the support body 1 with a tacker 9...
・The upper end surfaces of the wires are connected by helical wires 10...

Further, the edge spring 5 is constructed as shown in FIGS. 3 to 6.

That is, the edge spring 5 consists of a first rectangular frame part 11 and a second rectangular frame part 12 that are continuously formed from one steel wire.

The first rectangular frame part 11 and the second rectangular frame part 12 are located in the vertical direction, and are bent at a predetermined angle with respect to the vertical direction.

The first rectangular frame portion 11 located on the lower side is formed from a first torsion portion 13 and a second torsion portion 14 located in parallel on the lower side thereof, and these first and second torsion portions 13 and 14 are connected by a connecting member 15.

From one end of the first torsion section 13, approximately 9
A first mounting leg 16 bent at 0 degrees is formed, and a second mounting leg 17 is formed from one end of the second torsion portion 14.
are formed, and at the ends of these mounting legs 16 and 17 there is an engaging part 16a bent vertically downward at approximately 90 degrees,
17a is formed.

From the other end of the 11th second torsion part 13.14, the first
The first arm part 18. which forms the side of the rectangular frame part 11.
18 is inclined toward the first and second mounting legs 16 and 17 and extends upward.

From the upper end of each first arm part 18.18 is a third torsion part 1 whose one end is continuous with these arm parts 18.18.
9 and a fourth torsion part 20 are bent in a horizontal and parallel state, and these third and fourth torsion parts 19 and 20 are connected by a connecting member 21.

The third and fourth torsion parts 19 and 20 serve as the upper side of the first rectangular frame part 11 and the lower side of the second rectangular frame part 12.

From the other ends of the third and fourth torsion parts 19.20, a second arm part 22 forming a side of the second rectangular frame part 12 is connected.
．． 22 extend upwardly at an angle opposite to the first arm portions 18.18, and these second arm portions 22
．． A connecting side 23 that forms the upper side of the second rectangular frame portion 12 is provided horizontally between the upper ends of the second rectangular frame portion 12 .

The edge spring 5 configured in this way is
The engaging portions 16a and 17a formed at the ends of the first and second mounting legs 16 and 17 are engaged with the engaging holes 24 and 24 formed on the upper surface of the outer frame 2 of the support body 1, and the second rectangular frame 12
Clip the connecting side 23 forming the upper side to the frame line 7 2
5... are connected to each other.

Further, an elastic material 26 such as urethane foam is superimposed on the upper surface of the spring structure 4 via a protective material (not shown), and this elastic material 26 is covered with an exterior material 27.

According to such a configuration, the load applied to the peripheral portion of the spring structure 4 is transmitted to the connecting side 23 of the second rectangular frame portion 12 of the edge spring 5 via the frame line 7.

Then, the edge spring 5
2.22 rotates downward while twisting the third and fourth torsion parts 19.20.

Further, when the load is transferred from the third and fourth torsion parts 19.20 to the first arm parts 18.18, these first arm parts 18.18 are transferred to the first and second torsion parts 13.
14 is rotated downward while twisting.

That is, the compressive deformation of the edge spring 5 progresses while twisting the first to fourth torsion parts 13, 14, 19, 20, and therefore exhibits a large resistance against the load.

In addition, the first torsion part 13 and the second torsion part 14 and the third torsion part 19 and the fourth torsion part are located in parallel.
The torsion parts 20 are connected by the connecting members 15.21, so when the edge spring 5 is compressed and deformed, the torsion parts 13.14, 19.2
There is no possibility that the 0 will be bent without being twisted.

Furthermore, the edge spring 5 has a first rectangular frame part 11 and a second rectangular frame part 1 by each arm part and a torsion part.
2, the first and second arm portions 18.1
8, 22.22 was shaking horizontally.

Therefore, the edge spring 5 provided around the periphery of the spring structure 4 prevents the spring structure 4 from lateral shaking.

As described above, according to the present invention, the edge spring provided at the periphery of the spring structure is connected to the first rectangular frame portion and the second rectangular frame portion each having a torsion portion and an arm portion using a single steel wire. 12 are vertically continuous and bent at a predetermined angle in the vertical direction, and the boundary part between the first rectangular frame part and the second rectangular frame part and the lower side of the first rectangular frame part on the lower side. Each pair of torsion parts provided in parallel were connected by a connecting member.

Therefore, since the plurality of torsion parts exert a large resistance against the load, the peripheral part of the spring structure can be made hard.

Further, since the arm portion forms one side of the rectangular frame portion, it is difficult to sway horizontally, so that the lateral sway of the spring structure can be reduced.

Furthermore, since the pair of torsion parts provided in parallel are connected by a connecting member, the torsion part is twisted without being deflected by the load transmitted through the arm part, and can fully perform its function as a torsion part. It has the following advantages.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, in which Fig. 1 is a plan view of the overall structure with a partial section, Fig. 2 is a side view, Fig. 3 is a perspective view of the edge spring, and Fig. 4 is a side view. , 5th
The figure is a plan view, and FIG. 6 is a front view. 4... Spring structure, 5... Edge spring, 6... Coil spring, 11.
12...Curved rectangular frame section, 13, 14, 19.20...
...Torsion part, 18.22...Bent arm part, 15,
21...Curved connection member.

Claims (1)

[Scope of utility model registration request] In an edge spring provided at the periphery of a spring structure constructed by connecting coil springs in a flat plate shape, this edge spring has a first rectangular frame portion having a torsion portion and an arm portion formed by a single steel wire. The second rectangular frame is vertically continuous and bent at a predetermined angle with respect to the vertical direction, and the boundary between the first rectangular frame and the second rectangular frame and the lower side An edge spring in which each pair of torsion parts provided in parallel on the lower side of the first rectangular frame part are connected by a connecting member.