JPS61125306A - Doughnut shaped headrest with net and its production - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a donut-shaped head with a net, a rest, and a method for manufacturing the same, which is attached to a seat of a vehicle, furniture, etc.

Conventional technology Some existing headrests A have a donut-shaped headrest body with an opening in the center to ensure rearward visibility and good ventilation. Furthermore, some devices are constructed so that a net (B) is stretched in order to enable stable support of the head.

Conventionally, when installing the net B, a groove a is provided on the inner peripheral surface of the central opening, and a substantially quadrilateral frame b on which the net B is stretched is fitted into the groove a.
(see Figures a and b), or form the net B into a bag shape to completely envelop the main body of the headrest A (see Figures 5 a and b), or wrap the terminals of the net B between the left and right sides of the headrest main body. Attachment is carried out by attaching and sewing (see FIGS. 6a and 6b).

However, in the former case, the frame b, which is larger than the inner periphery of the central opening, must be fitted into the recess h'fl a, and furthermore, the frame b must be fitted along the recess h'fl a. If it is not tightly fitted so as to be tensioned and fixed, there is a risk that it will easily come off, so the installation process is extremely time-consuming. In addition, in the latter case, the entire net B crystallizes on the outer surface, so
Even in view of the fact that the net is formed into a bag shape or that the sewn portions for fixing the ends are visible from the outside and the entire surface is covered with the net, it cannot be said that the net is desirable in terms of appearance.

Means for Solving the Problems In the donut-shaped headrest with a net according to the present invention, a net is attached to the inner periphery so as to be continuous with the outer skin forming the headrest body, and the outer skin is formed into a donut shape. At the same time, a hollow three-dimensional shape is formed using a mold, and at the same time, a cutting die placed in the center of the mold is used to cut and mold a net in the area corresponding to the central opening of the skin material, which is continuous from the inner periphery of the donut shape. It is manufactured by forming a cushion foam layer within a hollow portion of the rear skin material.

Function: In this donut-shaped headrest with a net, the net is stretched only within the central opening, and because the net is provided continuously from the inner periphery of the skin, the ends of the net are not exposed. It has a good appearance, and since the net is formed at the same time as the skin is molded, it can be manufactured with extremely simple operations.

An example will be described below with reference to FIGS. 1 to 3.

This headrest is formed into a donut shape by providing a main body 1 with an opening 2 in the center. The opening 2
A net 3 is stretched over the entire inner circumference of the head to support the head in a stable manner. This headrest main body 1 includes a skin 10 formed in a donut-shaped hollow bag, a cushion foam layer 11 foam-molded in the hollow part, and a headrest frame 12 embedded inside the foam layer 11. It consists of A net 3 is continuously and integrally stretched from the inner periphery of the skin 10 forming the headrest body 1, and when the opening 2 is provided in the center of the headrest body 1, the net 3 is attached to the corresponding part of the skin 10. 30 is formed by forming it into a net shape without cutting it out (see Figures 1a and 1b).

In manufacturing this headrest, split mold 40
．． 41, with a hole 542 for the net 3 in each central part.
(only one side is shown) can be used. Each split mold 40°41 has a hollow bag-shaped skin 10.
A recess forming a cutting die 42 is formed in each opposing surface.
A cutting line corresponding to the mesh shape of the net 3 is formed in the area. Using the mold 4, a parison P made of thermoplastic resin such as polypropylene or polyethylene is extruded into a cylindrical shape from a die 50 arranged above, and then
The epidermis lO can be blow-molded by inserting it between 0.41 and 0.41. After inserting the parison P between each split mold 40.41 and clamping and fixing each mold, when compressed air is sent into the inside of the parison P, a hollow bag-like shape is formed in the recess of each split mold 40.41. The outer skin 10 is formed, and since the cutting die 42 is pressed against the central part of the parison P, each side of the parison P is welded to each other to form a recess corresponding to the donut-shaped central opening. . The recess is formed by a parison film continuous from the inner periphery of the skin 10, and the mesh-like cutting line of the cutting die 42 follows this film. Therefore, from the parison P, the hollow three-dimensional doughnut-shaped skin 10 is continued, and the net 3 can also be formed simultaneously using the same parison. When forming the parison, the headrest frame 12
is inserted into the mold 4 in advance, and the skin 10 can be formed with the frame 12 housed therein. Kanakin is in frame 12.

mln made of woven fabrics such as knitted fabrics, knitted fabrics, non-woven fabrics, etc.
By attaching the material 31 and placing it in the mold 4 in advance, the material 31 is laminated and bonded together with the Palin membrane by pressing the cutting die 42, and the part concerned is cut out and formed into a mesh shape. It is possible to form a net 3 reinforced with (
2 and 1), the net 3 is made of a sheet material 32 made of a thermoplastic resin sheet, a #a male material, a metal or hard resin net, etc., with each cutting die 42, 43.
The sheet material 32 can be placed on the surface of the parison P and pressed onto the surface side when forming the parison.
The headrest body 1 is made of a unique material.
It is also possible to mold it in a different color (see Figure 3).
A foam material such as polyurethane is injected into the hollow bag-shaped part of the skin 0 formed with the net 3, and this is foam-molded to obtain a donut-shaped headrest with the cushion foam layer 11 integrated therein. It becomes like this.

In the above-described embodiment, the net 3 was punched out into a mesh shape at the same time as the skin 10 was formed, but the mesh punching was performed after the parison was formed using a separate die, or by hand using a cutter or the like. By doing so, it is possible to form a continuous net 3 from the inner periphery of the headrest main body 1. Further, in order to continuously mold the skin 10 and the net 3, rotation molding or the like can be applied in addition to the above-mentioned blow molding.

Effects of the Invention As described above, according to the donut-shaped headrest with a net and the manufacturing method thereof according to the present invention, it is possible to form a continuous net on a part of the skin at the same time, so there is no need to process the ends of the net, resulting in extremely efficient operation. The headrest can be formed easily and inexpensively, and since there is no attachment part, the net can be firmly attached without spoiling the appearance.

[Brief explanation of drawings]

FIG. 1a is a sectional view of a donut-shaped headrest with a net according to the present invention, FIG. 1a is a front view of the same headrest,
Figure 2 is an explanatory diagram showing the manufacturing process of the same headrest;
The figure is an explanatory view showing the manufacturing process of a headrest according to another embodiment, and each of a and b in FIGS. 4 to 6 is a front view and a sectional view of a headrest with a net according to a conventional example. 1: Headrest body, 1O: Outer skin, 11: Cushion foam layer, 2: Center opening, 3: Net), 31: Textile material, 4: Mold, 42, 43: Cutting die. Figure 1 b Figure 2 Figure 3 Figure 4 a Figure 5 a Figure 5 Figure 6 a

Claims (3)

[Claims] (1) A donut-shaped headrest with a net, characterized in that a net is formed and stretched around the inner periphery so as to be continuous with the skin forming the donut-shaped headrest body. (2) Form the skin into a donut-shaped hollow three-dimensional shape using a mold, and at the same time use a cutting die placed in the center of the mold to cut a net into the area corresponding to the central opening of the skin material that is continuous from the inner periphery of the donut shape. A method for manufacturing a donut-shaped headrest with a net, characterized in that it is molded and then a cushion foam layer is formed in the hollow part of the skin material. (3) A method for manufacturing a headrest according to claim 2, wherein a reinforcing fiber material is laminated on a portion corresponding to the central opening of the skin material and a net is molded.