JPH0114220Y2 - - Google Patents

Description

[Detailed explanation of the invention] Cushioning materials for seats are usually made of urethane foam that is foam-molded in a mold. However, since urethane foam is flexible, it becomes extremely tiring when used for a long period of time, and When used as a seat in a car or the like, the seat will cause a strong feeling of fatigue after long hours of driving, and cannot be called an ideal seat.

In this application, the circumference is about 2 cm larger than the pressure-molded lock material on the inside in the thick parts on both sides of the back seat and the lumbar vertebrae, and the thick parts on both sides of the floor seat that require relatively hardness. Comparison of seat cushioning materials made by foam-molding urethane foam in a mold in which a veneer with a urethane slab attached to the outer surface of locking material is placed, and integrally molding the locking material, urethane slab, and urethane foam by impregnating them. This invention relates to a cushioning material for a seat that can be used for long periods of time without feeling fatigue by providing rigidity in areas that require physical hardness to reduce fatigue.

To explain one example now, back sheet A
And in the floor seat B, the lumbar vertebrae C and the thick side parts D that suppress lateral movement are made relatively hard to eliminate the feeling of fatigue in the lumbar vertebrae and prevent lateral slippage of the body and lumbar region against lateral movement while driving. By preventing this, an ideal sheet can be obtained.

That is, a plate-shaped lock material 1 such as hair lock, palm lock, steel lock, etc., which is mainly composed of a layered body containing a large number of spaces and is hardened with a cohesive material and formed into a press roll.
Then, a urethane slab 2, etc., which is approximately the same as or thinner than the locking material 1, and whose entire circumference is about 2 cm larger than the locking material 1, is attached with adhesive, and the surface of the urethane slab 2, etc. is relatively thin. A veneer 4 formed by applying a weak adhesive is inserted into a foam mold 5, and the urethane slab 2 of the veneer 4 is brought into contact with the inner surface of the mold 5 and fixed temporarily, and then fixed. In the case of back seat A, it is attached to the thick part D and the lumbar vertebrae C on both sides;
This is used for the thick wall portion D on the side.

In other words, it is used in general seats where relatively rigidity is required, and it can be used not only for automobile seats, but also for home reception set seats, office chairs, etc. Even if the invention is used in the invention, it does not deviate from the technical idea based on the invention of the present application.

In forming the sheet, the adhesive-applied side of the veneer 4 is temporarily attached to the mold surface at the necessary locations of the mold 5, and the urethane slab 2, etc. is temporarily adhered to the mold surface 7 and then positioned. The mold 5 is made airtight, the urethane foam 3 is foamed inside, and the veneer 4 and the urethane foam 3 are integrated. At this time, veneer 4
is temporarily attached to the mold surface with a weak adhesive, so even if the urethane foam 3 is injected and foamed, it will not move or collapse due to the foaming pressure, and after molding, the adhesive has a weak adhesive strength. It can be easily released from the mold.

When a urethane slab is used during foam molding, the urethane foam 3 is impregnated into the cells (bubbles) of the urethane slab around the veneer 4 and hardened to form the rigid connection part 6. This part can be given rigidity, and the locking material 1
The boundary between the locking material 1 and the urethane foam 3 formed around the four circumferences of the locking material 1 is eliminated, so that the locking material 1 and the urethane foam 3 do not tear, and the sharp feel is improved to give a soft feel. The surface of the urethane foam 3 has some unevenness due to the leached portion 7' of the urethane foam 3, but this can also be eliminated by impregnating the urethane slab with the foam. Since the impregnated layer does not reach the surface of the urethane slab, a good surface feel can be maintained.

As mentioned above, the present invention provides a structure in which the pressure molded locking material on the inside is used to strengthen the areas that require relatively hardness, such as the thick parts on both sides of the back seat, the lumbar vertebrae, and the thick parts on both sides of the floor seat. The urethane foam is foam-molded in a mold in which a veneer with a large urethane slab of about 2 cm attached to the outer surface of the locking material is placed, and the locking material, urethane slab, and urethane foam are impregnated and molded in one piece. By providing only the locking material on the surface of the urethane foam, it alleviates the unpleasant feeling that would occur when the skin is directly covered, and the area around the locking material hardens, and the locking material is just put in the frame, strengthened and separated. Furthermore, since the urethane foam penetrates into the lock material, the connection strength is further increased, and even after many years of use, the lock material and urethane foam do not separate, and the urethane slab on the surface of the lock Because of this, the feel of the rock material is not directly transmitted to the epidermis and only the rigidity is felt, and since the rear part is made of urethane foam, it has flexibility in addition to rigidity, and by providing moderate stimulation to the lumbar region, It can reduce fatigue even when used for a long time.

[Brief explanation of the drawing]

Figure 1 is an oblique view of the entire sheet cushioning body, Figure 2 is a sectional view taken along the - line in Figure 1, Figure 3 is a front view of the veneer, Figure 4 is an enlarged side view of the veneer, and Figure 5 is an enlarged side view of the veneer. The figure is a sectional view of the mold.

Claims (1)

[Scope of utility model registration request] Urethane with a circumference approximately 2cm larger than the pressure-molded locking material on the inside is placed in the thick parts on both sides of the back seat and the lumbar vertebrae, and in the thick parts on both sides of the floor seat where relatively hardness is required. This cushioning material for seats is made by foam-molding urethane foam in a mold in which a veneer with a slab attached to the outer surface of locking material is placed, and integrally molding the locking material, urethane slab, and urethane foam by impregnating them.