JP3129608B2 - Buffer structure for interior parts - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cushioning structure for an interior part suitable for an armrest installed on a door trim for a vehicle or a vehicle seat.

[0002]

2. Description of the Related Art For example, an armrest is usually installed on a door trim or a vehicle seat so that an occupant can rest on his / her elbow. It is designed to have the required strength and good cushioning, including the surface feel.

FIG. 5 is a perspective view showing a door trim having an armrest function. An armrest 2 is formed at the center of the door trim 1 so as to swell toward the interior of the vehicle. An armrest pad 3 is provided at the site.

The structure of the armrest pad 3 is shown in FIG.
As shown in FIG. 1, in order to obtain a light weight and a good cushioning function, a surface of a core material 4 formed by injection molding of a synthetic resin material such as a PP resin or an ABS resin is formed of an elastic material such as soft PVC or rubber. And covering the skin material 5
In order to form a hollow portion between the core material 4 and the skin material 5, spacer ribs 6 along a predetermined pattern are formed on the back side of the skin material 5.
Are integrally formed.

When the occupant places his elbow on the surface of the armrest pad 3, the spacer rib 6 falls down at any time,
A good cushioning function is provided by the elastic action obtained by the elastic repulsion.

[0006]

However, in the structure of the conventional armrest pad 3, the skin material 5 provided with the spacer ribs 6 on the back surface is placed on the surface of the core material 4, and the peripheral edge of the skin material 5 is set at the core. The core material 4 and the skin material 5 excluding the peripheral portion are not joined to each other by being wound around and adhered to the back surface side of the material 4.

As described above, since the skin material 5 is merely placed on the surface of the core material 4, the temperature inside the passenger car becomes extremely high in summer and is the material of the core material 4. Compared with PP resin and ABS resin, soft PVC, rubber, and the like, which are the materials of the skin material 5, are very easy to stretch, and as shown by the broken line in FIG. The drawback of significantly reducing the feel has been pointed out.

The present invention has been made in view of such circumstances, and even if there is a remarkable temperature change in the vehicle, the skin material does not rise and deform with respect to the core material, and has good appearance performance and cushioning. It is an object of the present invention to provide a cushioning structure for interior parts that ensures the performance.

[0009]

In order to achieve the above object, a cushioning structure for an interior part according to the present invention comprises a core material having a base function and spacer ribs formed integrally on a back side in a predetermined pattern. The interior parts are composed of an elastic skin material that covers the surface side of the material through a hollow part.
In addition, mounting ribs for joining and fixing to the core material are set on the back surface of the skin material at the thermally deformed portion of the interior part .

In order to fix the mounting rib provided on the skin material to the core material, a mounting rib having a dimension longer than the spacer rib is inserted into the mounting hole of the core material, and the inserted end is provided on the back surface of the resin core material. In a bent state, the sheet may be fixed by mechanical stopping such as a tucker or an adhesive.

Also, a retaining piece is formed on the side surface of the mounting rib provided on the back surface of the skin material, the mounting rib is set to be longer than the spacer rib, and the mounting rib is drawn into the mounting hole of the core material. You may make it fit.

The spacer ribs are integrally formed along a predetermined pattern on the back surface of a skin material made of an elastic material such as a soft PVC resin or rubber.

As the shape of the spacer ribs, cylindrical ribs may be arranged at predetermined vertical and horizontal intervals, and plate-shaped spacer ribs may be set at predetermined intervals in the vertical or horizontal direction.

[0014]

As is apparent from the above configuration, in the cushioning structure according to the present invention, a mounting rib having a longer dimension than the spacer rib is set on the back surface of a portion of the skin material where thermal deformation easily occurs, and this mounting rib is provided. Due to the structure in which it is fixed to the core material, the difference in the expansion rate between the skin material and the core material due to temperature changes in the car causes the two materials to be firmly even if the force of the elongation deformation acts on the skin material. Due to the joining, deformation such as lifting of the skin material does not occur.

Further, the mounting rib used for joining the skin material and the core material has flexibility itself, so that the cushioning property is not impaired at the joining portion.

[0016]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view showing an embodiment of a cushioning structure in an interior part according to the present invention.

FIG. 1 is a perspective view showing an automobile door trim provided with an armrest pad to which the cushioning structure of the present invention is applied, FIG. 2 is a partially cutaway perspective view showing the configuration of the armrest pad, and FIG. FIG. 4 is a cross-sectional view showing the configuration, and FIG. 4 is a cross-sectional view showing another embodiment of the armrest pad to which the cushioning structure according to the present invention is applied.

First, a first embodiment of the present invention will be described with reference to FIGS.

In FIG. 1, an armrest 1 is provided at a substantially central portion of an automobile door trim 10 so as to protrude toward the vehicle interior.
An armrest pad 20 is provided at a position where the occupant is likely to be put on the armrest, and the armrest pad 20 is placed on the upper surface of the armrest 11 and attached via a fixing means such as a clip. .

As shown in FIG. 2, the armrest pad 20 has a core member 30 made of an injection molded body of a synthetic resin such as a PP resin or an ABS resin, and a plurality of spacer ribs 41 along a predetermined pattern formed on the back surface. The core material 30
And a skin material 40 that covers the surface side of.

Materials used for the skin material 40 include:
In this embodiment, a soft PVC resin is used. However, a synthetic rubber such as ethylene propylene rubber (EPR) can be used, and any elastic material such as a soft resin, synthetic rubber, or natural rubber can be used. The material is not particularly limited.

Therefore, a space S corresponding to the dimension of the spacer rib 41 is formed between the core member 30 and the skin member 40. When the armrest is placed on the surface of the armrest pad 20, the spacer rib 41 falls down. A good buffer function without a feeling of bottoming can be obtained.

It is an object of the present invention to prevent the skin material 40, which is liable to be thermally deformed due to a remarkable fluctuation of the environmental temperature in the vehicle, from feeling that the material 40 is bumped, and to ensure good appearance and cushioning performance.

That is, a plate-like mounting rib 42 having a longer dimension than the length of the spacer rib 41 is provided integrally on the substantially central portion of the back surface of the skin material 40. Elongated mounting holes 31 are also provided for the core material 30 at the corresponding locations.

Then, as shown in FIG. 3, the skin material 40 is placed on the surface of the core material 30 and the peripheral edge treatment of the skin material 40 is performed. The mounting rib 42 thus inserted is inserted into the mounting hole 31 of the core member 30, and the insertion end 43 of the mounting rib 42 is bent substantially 90 degrees toward the back surface of the core member 30, and a fixing tool 44 such as a tucker, a staple or the like is bent. , And the skin material 40 and the core material 30 are joined and fixed via the mounting ribs 42.

As a method for fixing the insertion end 43 of the mounting rib 42 to the back surface of the core member 30, in addition to the above-described mechanical fixing, an adhesive fixing using an adhesive tape may be employed.

As described above, according to the present invention, the mounting ribs 42 are provided at locations where the skin material 40 is likely to be deformed due to a temperature change in the vehicle, and the thermal deformation of the skin material 40 is reliably prevented. The surface material 40 is not lifted up, and a good appearance design is obtained, and also in the cushioning performance, a satisfactory cushioning performance is obtained,
Good buffering properties can be maintained for a long time.

In this embodiment, a plurality of columnar spacer ribs 41 are arranged at predetermined intervals in the vertical and horizontal directions. However, plate-like spacer ribs extending in the vertical or horizontal direction may be arranged.

FIG. 4 shows another embodiment of the armrest pad 20 to which the cushioning structure according to the present invention is applied.

That is, in this embodiment, the mounting rib 45 integrally formed on the back surface of the skin material 40 is set to have a columnar shape longer than the spacer rib 41, and the retaining piece 46 is provided on the side surface with an undercut. It is integrally formed in the shape.

Further, corresponding to the mounting rib 45,
The core member 30 is provided with a round mounting hole 32.

Also in this embodiment, the skin material 40 is set on the surface of the core material 30 and the peripheral edge of the skin material 40 is
At the same time as the winding process is performed on the back surface, the tip of the mounting rib 45 is inserted into the mounting hole 32 of the
The skin material 40 is firmly joined to the core material 30 by pulling in from the back surface side and fitting the retaining piece 46 to the edge of the mounting hole 32. In this embodiment as well, As in the first embodiment, the skin material 40 is not thermally deformed by the ribs 45, and good appearance design and cushioning performance are obtained.

Further, according to the present embodiment, the mounting rib 4
5, after the tip is inserted into the mounting hole 32 of the skin material 30, the retaining piece 46 of the mounting rib 45 is attached to the mounting hole 32.
It is only necessary to pull in the tip of the mounting rib 45 so as to fit it on the connector, so that the joining and fixing work can be performed simply and inexpensively without the need for a separate fixing tool 44 such as a tucker or a staple. Advantages.

As described above, as an embodiment of the cushioning structure according to the present invention, the armrest pad 2 installed on the door trim 10
Although the embodiment applied to 0 has been described, for example, the cushioning structure of the present invention can be applied to the waist portion 12 of the door trim 10, and the present invention may be applied to any portion where the occupant's elbow or part of the body touches. Can be applied, and the use of the buffer structure according to the present invention can be widely applied.

[0035]

As described above, the cushioning structure in the interior part according to the present invention is a cushioning structure for an interior part composed of a core material and a skin material which is coated on the surface side of the core material through spacer ribs. Mounting ribs are installed on the back surface at the place where thermal deformation of the material occurs, and this mounting rib is joined and fixed to the core material, so that the environmental temperature significantly fluctuates and the skin material deforms such as lifting. Even if an external force is applied, the core material and the skin material are firmly integrated via the mounting ribs, so that the skin material does not deform such as floating, and has good appearance performance and cushioning for a long time This has the effect of guaranteeing performance.

Further, since the mounting rib as a joining member between the skin material and the core material has flexibility in itself, when the joining portion is pressed downward, the mounting rib bends. This has the effect that the deformation of the skin material can be reliably prevented without impairing the cushion performance at all.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an automobile door trim provided with an armrest pad to which a cushioning structure according to the present invention is applied.

FIG. 2 is a partially cutaway perspective view showing a first embodiment of the armrest pad to which the cushioning structure according to the present invention is applied.

FIG. 3 is a sectional view showing the configuration of the armrest pad shown in FIG. 2;

FIG. 4 is a sectional view showing a second embodiment of the armrest pad to which the cushioning structure according to the present invention is applied.

FIG. 5 is a perspective view showing a door trim provided with a conventional armrest pad.

FIG. 6 is a sectional view showing a configuration of a conventional armrest pad.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Automobile door trim 11 Armrest 20 Armrest pad 30 Core material 31, 32 Mounting hole 40 Skin material 41 Spacer rib 42, 45 Mounting rib 46 Retaining piece

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B68G 7/05 B60N 3/00

Claims (4)

(57) [Claims] 1. A core member (30) having a base function and spacer ribs (41) are integrally formed in a predetermined pattern on the back side, and the front side of the core member (30) is covered via a hollow part (S). Interior parts from a skin material (40) made of an elastic body
And a skin material at a heat-deformed portion of the interior part.
(40) A cushioning structure in an interior part, wherein mounting ribs (42, 45) for joining and fixing to a core material (30) are set on a back surface . 2. The mounting rib (42) has a longer dimension than the spacer rib (41), is inserted into a mounting hole (31) provided in the core material (30), and has an insertion end (43).
The cushioning structure for an interior part according to claim 1, wherein the back surface is folded back and fixed to the back surface of the core material. 3. The mounting rib (45) has a longer dimension than the spacer rib (41), and is pulled into and mounted in a mounting hole (32) formed in the core material (30) to prevent it from falling off. The cushioning structure for an interior part according to claim 1, characterized in that the detachment of the mounting rib (45) is restricted by the piece (46). 4. An armrest pad in which interior parts are supported and fixed on an armrest (11) of a door trim (10).
The buffer structure according to any one of claims 1 to 3 , wherein (20) .