JPS6015481Y2 - spring device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a spring device used in a spring structure constituting, for example, a pinerest.

Generally, the spring structure is constructed by arranging a large number of coil springs in a row and column, connecting them to each other with helical wires, and providing a frame line around the periphery.

However, such a spring structure requires an extremely large number of coil springs, leading to an increase in the number of parts and weight.

As a spring structure that solves this problem, second spring parts are provided at both ends of a linear first spring part to form a main spring device.

A large number of main spring devices are arranged by assembling the first spring portions in a lattice shape, and the first spring devices of the main spring devices are placed at appropriate positions in the lattice-shaped portion formed by the first spring portions.
Some spring structures are constructed by arranging a plurality of intermediate spring devices each having a first spring section shorter than the first spring section.

This configuration reduces the number of parts and the amount of wire used compared to those using coil springs.
The cost and weight of the spring structure can be reduced.

By the way, in a spring structure using the above-described spring device, the first spring section elastically bends and receives the load applied thereto, and the second spring sections provided at both ends of the first spring section is compressively deformed, so the performance of the spring structure is greatly influenced by the configuration of the second spring portion.

First, the second spring part needs to be hard enough to receive the load softly, and then to support the load reliably.

In order to give this kind of performance to the second spring part,
Conventionally, the second spring section was formed by sequentially connecting a plurality of arm sections and a torsion section instead of a coil.

According to such a configuration, the arm portion exhibits soft elasticity, and the torsion portion twisted by the arm portion exhibits hardness.

However, the arm portion is simply formed in a straight line between a pair of torsion portions.

As a result, the arm part deflects too much against the load applied to the second spring part, and the torsion part does not twist securely, so the second spring part may not be sufficiently hard or may repeatedly bend to a large extent. There were problems such as premature wear and tear due to exposure to water.

The present invention was developed based on the above-mentioned circumstances, and its purpose is to improve the shape of the arm so that the torsion part is reliably twisted and the second spring part exhibits hardness against the load. Another object of the present invention is to provide a spring device in which the above-mentioned arm part is made to wear out quickly.

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

In the figure, 1 is a spring structure. This spring structure 1
It is constructed of a base body 2, a number of main spring devices 3 and intermediate spring devices 4 provided on the base body 2, and a frame line 5 as described later.

The base body 2 is composed of an outer frame 6 and a large number of crosspieces 7 installed within the outer frame 6.

This base body 2 is usually made of wood, but may also be made of metal.

In addition, the main spring device 3 has a linear first spring portion 8 and second spring portions 9, 9 whose upper ends are connected to both ends of the first spring portion 8, each connected by a single wire. It is formed.

That is, the end of the first spring part 8 is bent at a substantially right angle in the horizontal direction to form a connecting rod 10, and from this connecting rod 10 a first arm part constituting the second spring part 9 is formed. 11 is formed at right angles and inclined downward.

A first torsion portion 12 is bent from the end of the first arm portion 11 at a substantially right angle in the horizontal direction.

A second arm portion 13 is bent from the end of the first torsion portion 12 at a right angle and inclined downward.
A second torsion portion 14 is bent from the end of the second arm portion 13 at right angles to the horizontal direction.

Further, a third arm portion 15 is bent from the end of the second torsion portion 14, and a third torsion portion 16 is formed by bending from the end of the third arm portion 15.

From the end of the third torsion part 16, a fixed rod 1 is connected.
7 is bent horizontally into a substantially L-shape.

In the middle of each of the first to third arm sections 11, 13.15, a bent section 18 is formed which is bent at an angle larger than the inclination angle of each arm section.

Each arm 11, 13, 15 is therefore even bent by said bend 18.

A large number of main spring devices 3 configured in this way are arranged on the base body 2 by assembling these first spring parts 8 in a lattice shape, and each second spring device located at the periphery of this base body 2 is arranged on the base body 2.
The spring portion 9 has a fixing rod 17 formed at its lower end.
is fixed to the outer frame 6 of the base body 2 with a tacker 19.

The frame line 5 is connected to the connecting rod 10 of the main spring device 3 with a clip 20.

Note that, in the main spring device 3, the first spring portion 8 of the main spring device 3 provided along the longitudinal direction of the base body 2 is longer than that of the main spring device 3 provided along the width direction.

Further, the intermediate spring device 4 is disposed at a suitable position at a portion where the first spring portions 8 of the main spring device 3 intersect in a grid pattern.

Similar to the main spring device 3, this intermediate spring device 4 has a structure in which second spring portions 9, 9 are formed at both ends of a linear first spring portion 8, each having a continuous upper end. The connecting rod 10 is connected to the first spring part 8 of the main spring device 3 with a clip 21,
A fixing rod 17 at the lower end of the second spring portion 9 is fixed to the crosspiece 7 of the base body 2 with a tacker 19.

However, the intermediate spring device 4 is different from the main spring device 3.
The difference is that the angle between the first spring portion 8 and the connecting rod 10 is smaller than that of the first spring portion 8, and the first spring portion 8 is shorter.

According to the spring structure 1 configured in this way, the load applied to the spring structure 1 is received by the first spring portions 8 of the main spring device 3 and the intermediate spring device 4, and this first spring portion 8 While elastically deflecting, the first spring portion 8 to the second spring portion 9
This second spring portion 9 is compressively deformed and received.

This compressive deformation of the second spring portion 9 is performed as follows.

That is, when a load is applied from the first spring section 8 to the first arm section 11 via the connecting rod 10, the first arm section 11 bends and rotates downward about the first torsion section 12 as a fulcrum. Therefore, the first torsion portion 1
2 will be twisted.

Next, the load is transmitted from the first torsion section 12 to the second arm 13, and as the second arm 13 is pivoted downward, the second torsion section 14 is twisted.

By rotating the third arm portion 15 downward and twisting the third torsion portion 16 in this manner, the second spring portion 9 receives a load.

By the way, the first to third arm parts 11, 13, 15 of the second spring part 9 have a bent part 18 formed in the middle thereof to make each arm part difficult to bend.

Therefore, since the amount of deflection of each arm portion 11° 13.15 against the load is reduced compared to the case where the bent portion 18 is not formed, the load applied to each arm portion is reduced by the torsional force of each torsion portion 12° 14.16. It works reliably as a.

In other words, each arm part 11, 13.15 can absorb the load without being deflected too much by the load.
2, 14, 16, so the second spring part 9
initially exhibits moderate softness, and then exhibits hardness that does not compress significantly under load.

Moreover, since each arm part 11, 13, 15 does not bend too much, it does not sag even under the load repeatedly applied to the second spring part 9.

If such a spring structure 1 is used, for example, in a pinerest for a bed, it will initially give a soft feel to the user lying on the pinerest, and then provide firmness that will support the user in the correct sleeping position without sinking too deeply into the pinerest. This makes it a comfortable pine mattress to sleep on.

As described above, in the spring device of the present invention, a second spring part whose upper end is continuous with both ends of a linear first spring part is formed by successively forming a plurality of arm parts and a torsion part. In addition, since bent portions are formed in the middle portions of the plurality of arm portions, the bent portions prevent each arm portion from bending.

Therefore, when a load is applied to the second spring section, the arm section reliably twists the torsion section without deflecting too much, so that the second spring section is initially softly compressed and then becomes too compressed against the load. It exhibits hardness.

Moreover, since the arm portion does not bend to a large extent, it has the advantage that it does not easily deteriorate after long-term use.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention; FIG. 1 is a plan view of the spring structure, FIG. 2 is a perspective view of the spring device, FIG. 3 is a side view, FIG. 4 is a front view, and FIG. is also a plan view. 3... Main spring device, 4... Intermediate spring device, 8... First spring section,
9...second spring part, 11. 13.
15...first to third arm parts, 12. 1
4. 16...first to third torsion parts,
18...Bending part.

Claims (1)

[Scope of utility model registration request] In a spring device in which a second spring part is formed by connecting the upper ends to both ends of a linear first spring part, the second spring part has a plurality of arm parts and a torsion part successively continuous. A spring device characterized in that the plurality of arm portions are formed with bent portions bent in the direction of expansion and contraction of the second spring portion at intermediate portions thereof.