JPH021120Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a vehicle seat body.
Specifically, the present invention relates to a vehicle seat body that has good durability, cushioning properties, and excellent ventilation.

Conventionally, seats used in vehicles such as automobiles are made by placing a cushion receiving material such as a palm lock material on a plain weave layer of a tape made of polyethylene, polypropylene, etc., and placing a polyurethane foam on the receiving material. Most commonly used seat bodies include a seat body whose surface is covered with a skin material, and which is placed on a spring stretched over a frame. However, since none of the materials that make up these seats have breathability, they have poor ventilation and are unable to dissipate the body heat of the occupants or the heat from the outside air. This was causing discomfort to passengers. Further, since polyurethane foam has been used as the cushion material of the seat body, if it is placed directly on the spring, the polyurethane foam will be cut at the contact surface with the spring after long use. For this reason, direct contact between the polyurethane foam and the spring is avoided, and a cushion support material such as a palm lock material is used. However, using such a cushion receiving material not only increases cost but also reduces cushioning properties. In addition, polyurethane has lower pressure elasticity than the fiber cushion material, so in order to maintain good cushioning properties, the polyurethane foam layer needs to be thicker, which overlaps with the thickness of the spring receiving material, making the entire seat higher. This had the disadvantage of making the entire car body taller.

The purpose of the present invention is to eliminate the various drawbacks of the conventional products as described above, and to provide a vehicle seat body that is easy to work with and has excellent cushioning effects and anti-lateral vibration properties. The curled filaments of short filament fibers have partially directional properties, and the curled filaments of various shapes are formed by stretching and deforming, and load strength is applied to the partially tightly intertwined portions of the curled filaments. A filament locking material formed in the direction of a 5-40% compression in the presence of water vapor and having a width l of 1 ~10mm, gap L between center points is 5~50
This is a vehicle seat body comprising a filament cushion material formed integrally with a net-like material of mm, and a breathable skin covering the entire cushion material.

The synthetic fibers used in this invention include:
Examples include polyester, polyamide, polypropylene, etc., and polyester is most preferred. Its thickness is 50-1000 denier as a monofilament, preferably 100-600 denier, most preferably
It is a filament with a three-dimensional curl of 200 to 400 deniers. Here, the term 3-dimensional curl refers to a 3-dimensional curl in a broad sense such as a bidirectional curl or a 3-directional curl, but preferably a 3-dimensional curl filament. A double-twisted filament D as shown in FIG. 1 is made by the method and apparatus disclosed in Japanese Patent No. 52-144448, and is then cut to a predetermined size and untwisted in three directions as shown in FIG. A stereoscopic curl filament F is obtained. The length of the filament after cotton production is preferably 25 to 200 mm, especially
60-150mm is preferred. Thus, portions of the filament coil in portions a over portions b, and portions c coil over portions d. However, the e section is not coiled over the f section, but below it. Thus,
The filament sections e to d are in two entanglements or coils of the helix. This can properly be called a non-directional helix, and is very similar to a spiral telephone cord that goes bad when one of its coils becomes non-directional with respect to the other.

Hereinafter, one embodiment of a vehicle seat body according to the present invention will be described based on the drawings. That is, the third
As shown in the figure, a filament molded body 2 and a net-like article 1 are made by pressurizing a filament coarse cushion material with a hardened peripheral edge 11 in the presence of water vapor, which is provided on a net-like article 1 as will be described later. It consists of a filament cushion material that is integrally molded with an adhesive, and a breathable skin 3 that covers the entire filament cushion material.

The mesh body 1 used in the present invention is as follows:
Net objects such as plastic and metal are available, and plastic net objects are particularly preferred. For example, as shown in Figures 4 and 5, plastic rods are arranged vertically and horizontally at regular intervals, and then thermocompressed to form a lattice shape, or as shown in Figure 6. As shown in the figure, there is one in which plastic rods are fused together and then opened to form a diamond shape. The width (or diameter) l of the rod is preferably 1 to 10 mm, particularly 2 to 7 mm, and the gap L between the center points is preferably 5 to 50 mm, particularly 7 to 30 mm.

The filament cushion material 2 is, for example, manufactured by JP-A-Sho.
As shown in No. 54-138669, each of the contact points of the filaments of an aggregate of cotton-made synthetic fiber filaments having three-dimensional curls is bonded with an adhesive, and the filaments of the cushion material are The curled filaments of various shapes are formed by stretching and deforming with partial directionality, and the partially tightly intertwined portions of the curled filaments are formed in the direction in which the load strength is desired. , and the interlocking portions are distributed according to the required load strength, and the hardness of the peripheral edge of the filament lock material is increased. As shown in No. 37481, an aggregate of short filament fibers having three-dimensional curls is supplied to a conveying device, and is fed onto a net-like material being conveyed to the conveying device, and while moving the conveying device, a large number of needles are A rotating body made of needle-like objects is rotated, and the needle-like objects are brought into contact with a filament short fiber aggregate and a predetermined portion is scraped off, thereby preforming the preform into a predetermined shape. The molded product is compressed to a desired density, and then needled using a barbed needle to achieve the desired needle density (in some cases, rubbing may be performed before compression molding). ), further applying an adhesive liquid, and then pulling up the preform together with the net-like material while heating and drying. By performing this kind of needling, the filaments near the part where the needle passes become tightly intertwined, and the dense cases of this intertwining are formed in the vertical direction, creating a kind of spring effect and eliminating the feeling of bottoming out. Together with the loosely intertwined flexible portion, the cushioning effect increases. Further, this net-like material may be integrated using an adhesive after forming the cushion layer. This cushion material usually has a needle density of 1 to 100 needles/100 cm ² , preferably 4 to 50 needles/100 cm ² , and is heated to 100 to 140°C while being pressurized in the presence of water vapor, such as by blowing water vapor onto the coarse cushion material. It is made by compressing it by 5 to 40%, preferably 10 to 30%, by pressing at a temperature of "Sagging" will no longer occur. The bulk density after adhesive application is 0.01-0.5 g/cm ³ preferably 0.03-0.2 g/cm ³
It is. The cushion material can also be treated with a flame retardant to make it flame retardant.

The hardness of the peripheral portion 2 of the cushion material 2 can be increased by increasing the bulk density and/or needle density of this portion relative to the central portion. That is, the thickness of the central portion, which requires a small compression ratio, must be reduced to form a recessed portion, while the peripheral portion, which requires a high compression ratio, must be made thick. This can also be achieved by increasing the amount of adhesive in that area.

The breathable skin body 3 used in the present invention includes:
For example, as shown in FIG. 7, a thin breathable cushion layer 5 is sewn with thread 6 on the lower layer of breathable fabric 4 such as woven or knitted fabric, or as shown in FIG. Thin breathable cushion layer 5 on the bottom layer
There is also one in which a thin cloth 6 such as kinotsuri is layered on the lower layer and sewn with thread 7. As the thin breathable cushion layer 5, for example, 30 to 200 deniers,
Preferably, an aggregate of synthetic fiber filaments having a three-dimensional curl of 80 to 150 deniers is coated with an adhesive and each contact point between the filaments is bonded with an adhesive, and a thermoplastic synthetic resin is heated and melted and extruded through a nozzle. A porous material made by stacking fibers in a curled state and welding and forming the mutual contact points of the fibers ("Hechimaron" (trade name, manufactured by Shinko Nylon Co., Ltd.), "Nomatsudo" (trade name, manufactured by Sumitomo 3M Co., Ltd.)) etc. It is also possible to use a material in which the contact portion is further bonded. These skin materials 3 cover the entire cushion material 2 and are fastened on the lower surface with clips 8 or the like.

The vehicle seat body constructed in this way is constructed using, for example, a spring 1 or other spring 1 tensioned on the frame 9 of the seat as shown in FIG.
It is used by placing it on top of 0. Moreover, it goes without saying that this seat body can be used not only for the seat of a vehicle such as an automobile, but also for the back.

As described above, the vehicle seat body according to the present invention has various shapes in which the curl shape of the synthetic filament short fibers having three-dimensional curls partially has directionality, and is formed by expanding and contracting. A filament formed by forming a curl filament in a direction in which the partially tightly intertwined parts are intended to produce load strength, distributing the intertwined parts according to a predetermined strength, and increasing the hardness of the peripheral edge part. 5-40% compaction of rock wood in the presence of water vapor and width l of 1
~10 mm, and a filament cushion material made of an integrally molded body with a net-like material with a gap L between center points of 5 to 50 mm, and a breathable skin body covering the entire cushion material. It has good air permeability and can be applied to air conditioners, so the back and seat areas do not get stuffy. Also, by partially changing the needle density and/or bulk density of the filament cushion material, an appropriate pressure distribution can be ensured. Since the vibration damping property is also low, there is an advantage that driver fatigue is reduced even when driving over long distances. Furthermore, since the cushion layer can be made thinner, the entire seat can be lowered, which has the advantage that the entire vehicle body can be lowered. Furthermore, since there is an integral mesh layer at the bottom, this serves as a cushion material holder and improves the slippage with the spring, so that the cushion material holder that was conventionally required is not required. Further, since the peripheral edge portion is formed to have high hardness, a sufficient buffering effect can be obtained in the center portion, and on the other hand, there is an advantage that side vibration can be prevented due to the high hardness of the peripheral edge portion. The one-piece molding of the cushion material and mesh material is easy to work with, and the lower part has high rigidity, which applies surface pressure to the spring as a whole, allowing the cushion material to be thinner and have a longer service life. Since there is no pressure on extreme areas such as the buttocks, the seat receives pressure all over the body and is comfortable to sit on. It also helps to reduce weight by reducing the weight of the spring receiving material and by reducing the wire diameter of the spring.

[Brief explanation of the drawing]

FIG. 1 is a partial perspective view of a double-twisted filament, FIG. 2 is a front view of a three-dimensional three-dimensional curl filament, FIG. 3 is a sectional view of a vehicle seat body according to the present invention, and FIG. Figure 6 is a plan view of the net-like material used in the vehicle seat body according to the present invention, Nos. 7 to 8.
The figure is a cross-sectional view of the breathable skin body, and FIG. 9 is a cross-sectional view showing an example of the usage state of the seat body according to the present invention. DESCRIPTION OF SYMBOLS 1... Net-like material, 2... Cushion material, 3... Breathable skin body, 11... Peripheral part.

Claims (1)

[Scope of utility model registration request] The curled shape of synthetic filament short fibers with three-dimensional curls partially has directionality, and the curled filaments of various shapes are formed by stretching and deforming, respectively. A 5 to 40% compressed body of a filament lock material formed in the direction in which it is intended to be released, the intertwined portions are distributed according to a predetermined strength, and the hardness of the peripheral edge is increased in the presence of water vapor. Width l is 1
A vehicle seat body comprising a filament cushion material formed integrally with a net-like material having a gap L between centers of 10 mm to 10 mm and a mesh material having a gap L between center points of 5 to 50 mm, and a breathable skin body covering the entire cushion material.