JPH061000Y2 - Vehicle headrest - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a vehicle headrest mounted on a vehicle seat.

[Prior Art] A headrest is widely used to prevent an occupant from getting a whiplash due to a collision accident and to stabilize the head position.

Various structures have been proposed for this headrest, for example, those shown in FIGS. 5 to 7.

That is, the headrest 101 shown in FIGS.
Is a hollow core body 102, a pad 103 and a skin material 104 that cover the hollow core body 102, and the hollow core body 10
2, a headrest main body portion 101a including a pad 103 and a skin material 104, and an inverted U-shaped stay 105 for attaching the headrest main body portion 101a to an upper end portion of a seat back (not shown).

More specifically, the hollow core body 102 is formed by pressing and has substantially the same shape, and the openings of two halves 106a and 106b, which are formed as thin metal containers each having an opening on one side, are directed inward from each other. It is constructed by butting in a state. Further, the convex portions 107 and the concave portions 108 are alternately formed on the opening edges of the respective half bodies 106a and 106b. Then, the openings of the two halves 106a and 106b are directed inward with respect to each other, and one half body 106a (or half body 10a) is inserted as indicated by the alternate long and short dash line in FIG.
The hollow core 102 is formed by alternately inserting and fitting the convex portions 6b of 6b) into the inner surfaces of the concave portions 108 of the other half body 106b (or half body 106a). On the other hand, in the stay 105, the upper end portion 105a of the stay 105 is the half body 10.
It is fitted in the mounting groove 109 of 6a and is fixed to the half body 106a by spot welding or the like. In addition, the hollow core body 102 to which the stay 105 is attached in this way
The periphery thereof is covered with the pad 103 and the skin material 104 to complete the headrest 101.

[Problems to be Solved by the Invention] However, in such a conventional vehicle headrest, the edges of the opening edges of the respective halves 106a and 106b in which the convex portions 107 and the concave portions 108 are provided are press-punched. It remains sharp and sharp. Then, for example, when the occupant's head or the like collides from the direction indicated by reference numeral G in FIG. 5 due to a collision accident or the like, the upper portion 106A of the half body 106a bends inward and downward as shown by a dashed line in the same figure. In some cases, the upper portion 106B of the half body 106b may be deformed obliquely upward and protrude. Then, the upper portion 106B of the half body 106b gives a local force to the head of the occupant or the like to cause a bruise, or even the half body 106b.
There is a problem in terms of safety, such that the upper portion 106B of b may penetrate the pad 103 or the skin material 104 and may be exposed to the outside, resulting in injury.

The present invention has been made in view of the above problems, and an object thereof is to provide a vehicle headrest having a structure capable of improving safety.

[Means for Solving the Problems] In order to achieve the above-mentioned object, the present invention provides a convex portion and a concave portion alternately at each opening of two halves each formed as a thin metal container having an opening on one side. , With the openings of the halves facing inward, the convex parts on the one half side are alternately inserted into the inner surface side on the other half side through the concave parts so that the half cores are hollow cores. A vehicle headrest in which a body is formed and the periphery of the hollow core is covered with a pad, wherein the opening edge of each half is coated with a resin material so that the edge of the opening edge has a rounded shape. .

[Operation] According to this configuration, even if the joint portion formed by inserting and fitting the convex portion and the concave portion is disengaged due to a collision or the like and the upper portion of the half body is projected, the resin material coated on the peripheral edge of the opening is used. Since the edge of the peripheral portion of the opening has a rounded edge, the roundness of the resin material reduces the impact force and eliminates the edge feeling. Further, the roundness of the resin material becomes a resistance, and the pad and the skin material in the outer peripheral portion are not pierced so that a part of the opening portion does not protrude to the outside.

[Embodiment] An embodiment of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a schematic vertical sectional side view showing an embodiment of a vehicle headrest according to the present invention, and FIG. 2 is an enlarged view of a portion A of FIG.
FIG. 3 is an exploded perspective view of an essential part of the headrest shown in FIG. 1, and FIG. 4 is an enlarged view of a B part in FIG.

In the figure, a headrest 1 includes a hollow core body 2, a pad 3 and a skin material 4 that cover the hollow core body 2, and a headrest body 1a including the hollow core body 2, the pad 3, and the skin material 4 as a seatback ( It is composed of an inverted U-shaped stay 5 for attaching to the upper end (not shown).

More specifically, the hollow core body 2 is formed by pressing and has substantially the same shape, and the openings of two halves 6a and 6b each formed as a thin metal container having an opening on one side are directed inward. It is configured by abutting in a closed state. Further, the convex portions 7 and the concave portions 8 are alternately formed on the opening edges of the respective half bodies 6a and 6b, and the resin material 9 is coated on the portion indicated by the satin pattern in FIG. The edge portion 10 of each opening edge is rounded with the resin material 9 described above. As a method of coating the resin material 9, for example, an opening portion to be coated is dipped in a container in which the molten resin material is stored,
After that, a method such as coating by taking out is adopted. The stay 5 is attached to the half body 6a by fitting the upper end portion 5a of the stay 5 into a mounting groove 11 formed in the half body 6a and then performing spot welding or the like.

Then, the two halves 6a and 6b are arranged such that the projections 7 of one half 6a (or half 6b) are aligned with the other half 6b (or half 6a) in a state where the openings are directed inward. The hollow core body 2 is formed by alternately inserting and fitting the inside of the other half body 6b (or the half body 6a) through the recesses 8 to fit them together. Further, in this state, the pad 3 is put in a foam molding die (not shown) together with the skin material 4, and then the urethane undiluted solution is injected to foam-mold the pad 3, and the outer periphery of the hollow core 2 is covered with the pad 3 and the skin material 4. Cover with and complete as headrest 1. When the pad 3 is foam-molded, the abutting surfaces of the halves 6a and 6b are in close contact with each other via the coated resin material 9, so that the urethane stock solution will enter the hollow core body 2. Therefore, it is possible to prevent a desired pad layer from being formed outside the hollow core body 2 and to prevent foaming failure.

Therefore, in the vehicle headrest 1 according to this embodiment, the joint portion formed by inserting and fitting the convex portion 7 and the concave portion 8 is disengaged by a collision or the like, and the half body 6a (or half body 6b).
Even if the upper portion 6A (or the upper portion 6B) of the above is protruded, the edge portion 10 of the opening edge is rounded by the resin material 9 coating the opening edge where the convex portion 7 and the concave portion 8 are provided. The roundness of the resin material 9 reduces the impact force and eliminates the edge feeling. Further, the roundness of the resin material 9 becomes a resistance, and the pad 3 and the skin material 4 are not penetrated to prevent the edge portion 10 from protruding to the outside.
The occupants can be surely protected.

Although the present invention has been described with reference to the above embodiment, it is needless to say that the invention is not limited to the structure of this embodiment, and various design changes may be made without departing from the gist of the present invention. . For example, in this embodiment, the resin material 9 covers the entire circumference of the opening where the convex portion 7 and the concave portion 8 are provided.
However, the coating may be provided only on the edge portion where the protrusion is expected, without applying the coating on the entire circumference.

[Effects of the Invention] As described above, according to the vehicle headrest of the present invention, the joint portion formed by inserting and fitting the convex portion and the concave portion is disengaged due to a collision or the like, and the upper portion of the half body protrudes. Also, since the edge of the opening edge is rounded by the resin material coated on the opening edge where the convex portion and the concave portion are formed, the roundness of the resin material reduces the collision force and eliminates the edge feeling. Further, the roundness of the resin material becomes a resistance, and the pad and the skin material in the outer peripheral portion are not pierced to be projected outward. As a result, the occupant and the like can be protected from injury and the safety is improved.

[Brief description of drawings]

FIG. 1 is a schematic vertical sectional side view showing an embodiment of a vehicle headrest according to the present invention, FIG. 2 is an enlarged view of part A of FIG. 1, and FIG. 3 is an exploded view of a main part of the headrest shown in FIG. Perspective view,
FIG. 4 is an enlarged view of part B of FIG. 3, FIG. 5 is a schematic vertical sectional side view showing an example of a conventional vehicle headrest, and FIG.
FIG. 7 is an exploded perspective view of essential parts of the headrest shown in the figure, and FIG. 7 is an enlarged perspective view of essential parts of the hollow core body shown in FIG. DESCRIPTION OF SYMBOLS 1 ... Headrest 2 ... Hollow core 3 ... Pad 6a, 6b ... Half body 7 ... Convex part 8 ... Recessed part 9 ... Coated resin material 10 ... Edge part

Claims (1)

[Scope of utility model registration request] 1. A convex portion and a concave portion are alternately provided in each opening of two halves each formed as a thin metal container having an opening on one side, and the openings of the halves are directed inward with respect to each other. In this state, the convex portion of the one half body side is alternately inserted into the inner surface side of the other half body side through the concave portion to form a hollow core body with the both half bodies, and a pad is provided around the hollow core body. A vehicle headrest, wherein the opening edge of each half is coated with a resin material so that the edge of the opening edge is rounded.