JPH0355155B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a method for manufacturing a headrest for a vehicle, and more particularly to a method for manufacturing a headrest having a reticulated net in a portion of the headrest.

[Background of the invention] Conventionally, when manufacturing a one-piece headrest, for example, a cylindrical parison was extruded from a die, the mold was closed before it cooled and solidified, and compressed air was blown from the bottom so that the parison could fit onto the inner wall of the mold. Blow molding is used to form the outer shape of the skin by pressing it against the parison, but at that time, a frame (stay) is inserted into the parison in advance, and after blow molding, the formed skin is filled with foam material. The skin, frame, and pads were manufactured in one piece by foaming and hardening, molding the pads, and fixing the frame to the pads.

Such a headrest tends to cause problems such as the headrest obstructing rear visibility when driving a vehicle such as an automobile, or the head becoming stuffy due to lack of ventilation.

For this reason, an annular headrest as shown in FIG. 1 has been considered, but these have difficulties in terms of strength.

[Object of the Invention] An object of the present invention is to provide a method for manufacturing a headrest that is an integral part of the headrest and has a mesh-like net portion that improves rear visibility in a part of the headrest.

[Summary of the Invention] The present invention relates to a method for manufacturing a headrest in which a portion of the headrest is made into a net shape.In manufacturing the headrest, first, a core material is formed by overlapping a net over at least a portion of a frame. Then, cover both sides of the desired part of this core material with a covering material to create a core part,
Using this core, a skin is formed by blow molding. The see-through headrest is formed by filling the skin with a foaming agent and foaming it to form a part that becomes a cushioning material, and then removing the covering material, the skin, and the foamed part of the covering material part. The purpose of this invention is to provide a method for manufacturing the same.

Since the present invention is configured in this manner, a net-like portion can be provided in a part of the headrest, thereby providing a headrest with good rearward visibility and sufficient strength. Further, this headrest has the advantage that the head does not get stuffy, and it also has a good appearance.

[Embodiment of the Invention] Hereinafter, an embodiment of the present invention will be described based on the drawings.

Fig. 2 is a sectional view illustrating the state in which the headrest skin is fitted into a mold for forming the headrest skin, Fig. 3 is an external view of the headrest completed by the method of the present invention, and Fig. 4 shows the headrest with the net attached and covered. Another embodiment of the frame covered with wood is shown, FIG. 4A is a side view;
FIG. 4B is a front view.

First, as shown in FIG. 2, a core material S is formed by overlapping a reticulated net 16 over at least a portion of the frame 15 (in this example, the entire frame). The method for forming the core material S is to stretch a mesh net on one side of the frame 15 and attach it by a fixing means such as driving a tacker or the like (not shown) into a desired location, but the method is not limited to this. Any known means may be sufficient. In this example, the net 16 is made of painted metal or reinforced plastic (FRP).
etc., but is not limited to this,
It only needs to be made of a material that is not easily damaged.

Then, a desired part of this core material S, that is, a part visible as a net when the product is completed, is covered on both sides with covering materials 17, 17 to form a core part 18, and using this core part 18, sheet blow molding is performed. and form the headrest epidermis. That is, sheets 10 and 11 made of vinyl chloride resin extruded from separate dies (not shown) of two extruders are interposed facing each other between divided molds 12 and 13, and this sheet Between 10 and 11, the above net 1
Frame 15 and covering materials 17, 17 to which 6 is pasted
A core portion 18 consisting of is inserted, and the molds 12 and 13 are closed. Compressed air is blown into the closed molds 12 and 13 to form the headrest skin. At this time, the excess portions of the sheets 10 and 11 are removed from the mold 12,
13 is cut and removed by clamping the mold. Then, a foam material is filled into the cover through an opening (not shown) formed in a part of the headrest skin and foam-molded. After cooling the head rest skin formed in this manner, it is taken out from the mold and the covering materials 17, 17 of the covering portions, the sheets 10, 11 of the covering materials 17, 17 portions, the foamed portions, etc. are cut out. By removing this, a headrest 25 having a mesh-like net portion in a part of the headrest as shown in FIG. 3 is obtained. Of course, the same effect can be obtained by extruding a circular parison from a die, inserting a frame with a net attached from the bottom, clamping the mold, and performing blow molding.

FIG. 4 is a partial sectional view showing another embodiment of the core, in which a net 2 is connected between two frames 21 and 22.
3 was placed and sandwiched.

In this way, when the headrest is completed, the net 23 is located in the center, so the head, especially the hair part, does not come into direct contact with the net 23, making it possible to obtain a well-balanced headrest with a good appearance. There is an effect.

FIG. 5 shows an embodiment in which a baffle plate 27 is attached to the frame, and by providing this baffle plate 27, the volume movement accompanying foaming of the foam material is guided in the direction of the corner of the cavity. It is possible to prevent damage to the patch portion.

[Effects of the Invention] Since the present invention is configured as described above, a net-like portion can be provided in a part of the headrest, thereby providing a headrest with good rear visibility and sufficient strength. This headrest also has the advantage of keeping your head from getting stuffy.

[Brief explanation of drawings]

FIG. 1 is a diagram showing a conventional special type head rest, and FIG. 2 is a sectional view illustrating the state when fitting it into a mold for molding the head rest skin.
Fig. 3 is an external view of a headrest completed by the method of the present invention, Fig. 4 shows another embodiment of a frame fitted with a net and covered with a covering material, Fig. 4A is a side view, and Fig. 4B is a The front view and FIG. 5 are external views of the headrest using baffle plates. 10, 11... Sheet, 12, 13... Mold,
15...Frame, 16, 23...Net, 17
... Covering material, 18 ... Core part, 25 ... Head rest, S ... Core material.

Claims (1)

[Claims] 1. In a headrest comprising a frame, an outer skin, and a foam material, a core material is formed by overlapping a net over at least a portion of the frame that holds the headrest, and a desired portion on both sides of the core material is covered with a covering material to create a core part. The core is formed by filling a foaming material into a skin formed by blow molding and foaming, and then removing the covering material, the skin and the foamed part of the covering part. A method for manufacturing a see-through headrest.