JPS5914278Y2 - armrest - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to improvements in armrests used in automobiles and the like.

A conventional armrest 1 has a shape as shown in Fig. 1, but in order to form this, a soft foam layer is placed around the outer periphery of a hollow, thin core body 2 made of thermoplastic resin, as shown in Fig. 2. A portion 3 is provided, and this is further covered with a skin 4.

The armrest 1 thus constructed is attached to a door base plate 6 using screws 5, as shown in FIG.

Generally, an armrest needs to have a good feel when resting your arm while riding, and a certain degree of hardness so that it is easy to hold when opening and closing the door. There is a problem with the hardness.

That is, when you put your hand on this armrest 1, your fingertips may get stuck in the reinforcing recesses 7 of the core body 2, or the feeling that is transmitted to your hand may be both soft and hard, which may not necessarily be fully satisfactory. It's not a thing.

Moreover, when the core body 2 as shown in FIGS. 2 and 3 is formed by blow molding, there is a possibility that mold release may be impaired depending on the shape of the reinforcing recess 7.

Therefore, the present invention eliminates the defects of the conventional products, and provides an armrest having a hollow core, in which the entire outer surface of the core is made of a smooth surface, and a bead is formed on the inner peripheral surface. To provide an armrest which gives a good feeling to the grasping hand when the armrest is grasped from the outside to open and close a door, the armrest has sufficient rigidity, and the core body can be manufactured easily. With the goal.

Hereinafter, the armrest according to the present invention will be explained with reference to the drawings.

4 and 5 show an embodiment of the armrest, and are sectional views corresponding to FIG. 2, and the same members as those shown in FIGS. 1 to 3 are given the same reference numerals.

This armrest 10 has a soft foam layer 3 inside the skin 4, similar to the conventional armrest shown in FIGS.
is being improved.

Since the polyurethane foam or foam rubber that constitutes the soft foam layer 3 is expensive, this core body 11 is made hollow in order to reduce the cost. 12 is entirely composed of a smooth surface.

In other words, if the outer surface 12 is made of a thin core 11 with no irregularities, for example, when you put your hand on the armrest 10 to open or close a door, the feeling that is transmitted to your hand will be different from the soft part and the hard part like the conventional one. You won't feel any difference between the parts, it will be homogeneous, and you won't feel any discomfort when using it.

On the other hand, the hollow thin core body 11 has a bead portion 14 on the inner circumferential surface 13 to reinforce the core body 11.

This bead portion 14 extends in a plane parallel to the longitudinal axis of the core body 11, as shown in FIG. 4, or, as shown in FIG. In other words, the ring-shaped bead portion 14b may be formed in the same plane.

When the thin core body 11 having such a bead portion 14 is formed by blow molding, a hollow parison made of a thermoplastic resin such as polyethylene or polypropylene is extruded, air is introduced into the parison so that it swells, and a metal layer that is approached from the outside is extruded. Shape with a mold.

In order to form the core body 11 having the rod-shaped bead portion 14a using this method, it is sufficient to form a recess on the outer peripheral surface of the inner die from which the parison exits, and this recess allows the parison to One or more rod-shaped bead portions are formed on the inner peripheral surface while being extruded.

Further, the thin core body 11 having the ring-shaped bead portion 14b
To form this, by intermittently changing the amount of parison to be extruded, thick ring-shaped parts are formed in some places of the tubular parison, which later become ring-shaped bead parts 14b.

Note that there are two types of apparatus for blow molding, a vertical type and a horizontal type, depending on the direction in which the parison is extruded, but there is no major difference in the formation of the thin core body regardless of which type is used.

By molding as described above, it is relatively easy to form the core 11 having the bead portion 14 on the inner circumferential surface 13, but the fact that the entire outer surface 12 of the thin core 11 has no irregularities,
The shape of the mold used in the above-mentioned molding may be simple, and the mold can be manufactured at low cost.

Therefore, the cost required for manufacturing the core body 11 can be significantly reduced compared to the conventional one.

In addition, although the above-mentioned embodiment is parallel to or perpendicular to the longitudinal axis of the thin-walled core, the present invention is not limited to this in any way, and it is possible that the thin-walled core may be inclined to some extent with respect to this axis. Needless to say.

As is clear from the above explanation, according to the present invention, the entire outer surface of the thin core is flattened and a bead is formed on the inner peripheral surface, so that a soft foam layer and a skin are formed on the outside of the core. By forming an armrest, it is possible to obtain a good feeling, and it is also easy to manufacture, which results in extremely excellent effects such as cost reduction.

[Brief explanation of the drawing]

Figure 1 is a perspective view of a conventional armrest, Figures 2 and 3 are sectional views taken along lines II-II and ■■I-■II in Figure 1, and Figures 4 and 5 are armrests according to the present invention, respectively. FIG. 2 is a sectional view of a portion corresponding to FIG. 2, showing an embodiment of the present invention. 3... Soft foam layer part, 4... Epidermis, 1
0... Armrest, 11... Core body,
12...Outer surface, 13...Inner peripheral surface, 1
4...Bead part, 14a... Rod-shaped bead part, 14b... Ring-shaped bead part.

Claims (2)

[Scope of utility model registration request] (1) In an armrest in which a soft foam layer is provided on the outer periphery of a hollow, thin core, and this is further covered with a skin, the entire outer surface of the thin core is formed into a smooth surface, and the inner periphery is An armrest with a bead formed on the surface. (2) The armrest according to claim 1, wherein the bead portion is formed in a plane perpendicular to or parallel to the longitudinal axis of the thin core.