JP2000177468A - Cushioning structure of interior trim component for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify molding and to secure a smooth feeling with no bottoming feeling to a load with a simple structure in a cushioning structure of a vehicle interior trim component such as an armrest pad. SOLUTION: This cushioning structure of an interior trim for a vehicle has a core material 21; a skin material 25 made of an elastic material covering the front face side of the core material 21 through a hollow part; and plural spacer ribs 26 integrally formed on the rear face side of the skin material 25, having tips projectingly extending toward the core material 21. Recessed and projecting parts 23, 22 contactable with the tips of the spacer ribs 26 are formed on the front face side of the core material 21. In an unloaded state, the tips of all the spacer ribs 26 are in contact with the projecting parts 22, while inclined faces 24 are formed from the projecting parts 22 to the recessed parts 23.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a buffer structure for a vehicle interior part such as an armrest provided on a door lining or a seat of a vehicle.

[0002]

2. Description of the Related Art Some interior parts for vehicles, for example, door linings and seats are provided with an armrest for an occupant to rest on an elbow. In this armrest,
An armrest pad is provided which has a strength to receive a load when the occupant is put on the elbow and a good cushioning property including a surface feel when the occupant is put on the elbow.

FIG. 9 is a longitudinal sectional view showing the structure of a conventional armrest pad 90.
, So that a good cushioning function can be obtained while reducing the weight,
A core material 91 formed by injection molding of a synthetic resin material such as a PP resin or an ABS resin is covered and adhered to a surface material 95 made of an elastic material such as a PVC resin or rubber. As shown in the figure, a spacer rib 96 is integrally formed with the skin material 95 to form a hollow portion between the core material 91 and the skin material 95. Such an armrest pad 90
When the occupant puts his elbow on, the spacer rib 96 falls down,
A good cushion function can be obtained by the elastic action obtained by the repulsive force.

However, in the armrest pad 90 having the above-described structure, when the occupant places a predetermined load on the elbow, the spacer ribs 96 suddenly fall down to give a so-called bottoming feeling, which is satisfactory. Cushion performance could not be obtained. Japanese Patent Application Laid-Open No. Hei 7-223476 discloses a structure in which two or more types of spacer ribs having different dimensions are provided in order to obtain a good cushioning performance by gradually bending and deforming the structure in response to an external load. Has become known.

[0005]

However, in the structure in which two or more types of spacer ribs having different dimensions are provided on the skin material, holes or grooves having different depths for the spacer ribs must be formed in the mold. There was a problem that the mold processing became complicated.

Accordingly, an object of the present invention is to provide a cushioning structure for a vehicle interior component such as an armrest pad, which simplifies die processing and ensures a smooth feel without a bottoming-out feeling with a load by a simple structure. Is to do.

[0007]

According to the first aspect of the present invention, there is provided a core material and the surface of the core material is covered with a hollow portion through a hollow portion and is formed of an elastic body. In a cushioning structure for a vehicle interior component comprising a skin material and a plurality of spacer ribs integrally formed on the back surface side of the skin material and extending so that the tips project toward the core material side, a spacer rib is provided on a front surface side of the core material. Is formed in such a manner that a concavo-convex shape portion with which the tip of the contact portion can contact is formed.

Here, as the core material, a material obtained by injection-molding a synthetic resin material such as a PP (polypropylene) resin or an ABS resin may be used, but any material may be used. Examples of the skin material include those made of an elastic material such as polyvinyl chloride (PVC) resin and rubber. Examples of the spacer rib include a columnar rib arranged at predetermined vertical and horizontal intervals and a plate-like rib continuous in the vertical or horizontal direction, but may have any shape. Examples of the concavo-convex shape portion include a circular shape provided at predetermined vertical and horizontal intervals, a groove or a jetty that is continuous in the vertical direction or the horizontal direction, and may have any shape.

As described above, according to the first aspect of the present invention, the front surface of the core material is covered with the hollow portion through the hollow portion, and the front end projects toward the back surface of the elastic skin material. In the cushioning structure of a vehicle interior component, which is integrally formed with a plurality of spacer ribs extending so as to extend, a concave-convex portion to which the tip of the spacer rib can contact is formed on the surface side of the core material, so that When a load is applied, each of the plurality of spacer ribs comes into contact with the top and bottom of the concave-convex-shaped portion to bend and deform. As described above, the plurality of spacer ribs are continuously bent and deformed at the uneven portion with respect to the load,
As in the related art, it is possible to reduce an unpleasant feeling in which the spacer rib suddenly falls down.

According to a second aspect of the present invention, there is provided the shock absorbing structure for a vehicle interior component according to the first aspect, wherein the structure is such that when no load is applied,
The configuration is characterized in that the distal ends of all the spacer ribs are in contact with the convex portions of the concave-convex portion.

As described above, according to the second aspect of the present invention, when the tip ends of all the spacer ribs are not loaded,
The spacer rib is in contact with the convex portion of the concave-convex-shaped portion according to the first aspect, and when a load is applied, the spacer rib moves to the concave portion while flexing due to pressure contact with the convex portion, and further, the spacer rib flexes and displaces due to pressure contact with the concave portion.

According to a third aspect of the present invention, there is provided the cushioning structure for an interior part for a vehicle according to the second aspect, characterized in that the inclined portion extends from the convex portion to the concave portion of the concave-convex portion.

[0013] According to the third aspect of the present invention, the slope of the concave-convex portion of the second aspect has a slope from the convex portion to the concave portion. It moves smoothly to the recess along the slope. This provides a fine and soft feel. Also, by changing the inclination angle of the inclined surface,
There is also an advantage that the soft feeling can be adjusted.

According to a fourth aspect of the present invention, there is provided a shock absorbing structure for a vehicle interior part according to the first aspect, wherein the structure is such that when no load is applied,
The configuration is characterized in that the ends of substantially half of the spacer ribs are in contact with the protrusions of the uneven portion, and the ends of the remaining half of the spacer ribs are separated from the recesses of the uneven portion.

Thus, according to the fourth aspect of the present invention, at the time of no load, the tips of substantially half of the spacer ribs are in contact with the protruding portions of the concavo-convex shape portion according to the first aspect, and substantially remain. Since the leading ends of half of the spacer ribs are separated from the concave portions of the uneven portion according to claim 1, almost half of the spacer ribs are first deformed by pressure contact with the convex portions, and then substantially left when a load is applied. Half of the spacer ribs are flexed and deformed by pressure contact with the recess.

The invention according to claim 5 is the invention according to claims 1, 2, and 3
Or a buffer structure for an interior part for a vehicle according to 4, wherein the structure is provided on an armrest portion of a door lining;
It is characterized by.

According to the fifth aspect of the present invention, the cushioning structure according to the first, second, third, or fourth aspect is provided in the armrest portion of the door lining, which is an interior part for a vehicle. A good armrest function can be provided.

[0018]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing an embodiment of a buffer structure for a vehicle interior part according to the present invention; FIG.

<First Embodiment> First, FIG. 1 is a schematic perspective view showing a door lining as an example of a vehicle interior part to which the present invention is applied, and FIG. 2 shows an armrest pad of the door lining. It is the perspective view of the partially broken and expanded view. As shown in FIG. 1, the door lining 1 is provided with an armrest 2, and an armrest pad 20 is provided at a rear portion of the armrest 2.

As shown in FIG. 2, the armrest pad 2
0 is a core 21 integral with the armrest 2 and the core 2
And a skin material 25 that forms a hollow portion on the surface (upper surface) side of the device 1 and covers and integrates the hollow portion. Here, the core material 21 is an injection molded body of a synthetic resin such as a PP resin and an ABS resin. The skin material 25 is formed of a material having elasticity such as a soft PVC resin, another soft resin, synthetic rubber, or natural rubber.

The skin material 25 has a back surface (lower surface).
A large number of columnar spacer ribs 26 are provided on the side at regular intervals in the vertical and horizontal directions (in the example shown, four in the horizontal direction and six in the vertical direction).
It is formed. The spacer ribs 26 are all of uniform shape having the same length. In addition, core material 2
Reference numeral 1 designates the surface side as the uneven portions 22 and 23. That is, a plurality (four in the illustrated example) of ridge-shaped protrusions 22 extending in the vertical direction are formed on the surface of the core material 21 at predetermined intervals in the horizontal direction. Due to the formation of the ridge-shaped protrusion 22, other portions of the surface of the core 21 are formed as groove-shaped recesses 23, 23,. Further, in the illustrated example, an inclined surface 24 that is continuous from the convex portion 22 to the concave portion 23 on the left side is formed. The four protrusions 22, 22,... As described above are provided with four rows of spacer ribs 26, 26,.
... respectively correspond to the positions.

FIG. 3 shows a spacer rib 26 having a cylindrical shape.
FIG. 3 is a partially broken perspective view showing a spacer rib 27 having a plate shape different from that of FIG.
That is, instead of the above-described cylindrical spacer rib 26,
A plurality (four in the illustrated example) of plate-like spacer ribs 27 extending in the vertical direction are formed at predetermined intervals in the horizontal direction on the back side of the skin material 25. The spacer ribs 27 are all of a uniform shape having the same length. These four spacer ribs 27, 27,...
Correspond to the positions of the four convex portions 22, 22,. Further, in the above illustrated example, the protrusion 22 extending in the vertical direction is used.
And the spacer rib 27, but may be a protrusion extending in the lateral direction and a spacer rib.

The cushioning structure of the armrest pad 20 having the above-described configuration allows the four protrusions of the core member 21 to be used when the occupant's elbow does not rest on the skin member 25 as shown in FIG. .. (Or four spacer ribs 27,
27,...) Are in contact with each other. Then, as indicated by the arrow, when the load on the elbow of the occupant placed on the skin material 25 is applied, the spacer rib 26 (or the spacer rib 27) is bent and deformed as shown by the imaginary line due to the pressure contact with the projection 22. The tip of the spacer rib 26 (or the spacer rib 27) slides down along the inclined surface 24, and the spacer rib 26 (or the spacer rib 27) is further bent and deformed in the concave portion 23.

Therefore, as the armrest pad 20,
When the occupant rests on his elbow, there is no feeling of bottoming, a fine and soft feel is obtained, and a good cushioning function can be secured for a long time. In addition, in the skin material 25,
(Or spacer ribs 27, 27,...) Of a fixed size only need to be provided, and it is necessary to provide two or more types of conventional spacer ribs having different dimensions (see the above-mentioned JP-A-7-223476). Since there is no die, die processing can be simplified.

<Modification> FIG. 5 shows a modification of the uneven portions 22, 23, and FIG. 5 (a) shows an enlarged view of the case where both sides of the protrusion 22 are inclined surfaces 24, 24. FIG. 5B is an enlarged view of a main part in which the case where both sides of the convex part 22 are steeply inclined surfaces 124, 124 is enlarged. As described above, if the both sides of the convex portion 22 are the inclined surfaces 24, 24 (or the inclined surfaces 124, 124),
As shown by the arrow, even if the spacer rib 26 (or the spacer rib 27) bends to the left or right, the spacer rib 26 (or the spacer rib) may be along one of the inclined surfaces 24, 24 (or the inclined surfaces 124, 124) on both sides. 2
7) moves to the concave portion 23. Also, by changing the angle of the inclined surface such as the inclined surface 24 and the steep inclined surface 124, it is possible to adjust the soft feeling when the elbow is put on.

<Second Embodiment> FIG. 6 is a partially cutaway perspective view showing the armrest pad 20 of the door lining 1 of FIG. 1 in an enlarged manner. In this embodiment, the cylindrical spacer ribs 26 (or plate-shaped spacer ribs 27) described above are provided on the skin material 25, and the surface side of the core material 21 is formed with the uneven portions 122 and 123. That is, a plurality (two in the illustrated example) of wide ridge-shaped protrusions 122 extending in the vertical direction are formed on the surface of the core material 21 at predetermined intervals in the horizontal direction, and the other portions are formed with a width. The recesses 123 have a wide groove shape. The convex portions 122, 122 and the concave portions 12 provided alternately in the lateral direction as described above.
3, 123 are four horizontal rows of spacer ribs 26, 26,.
(Or four horizontal spacer ribs 27, 27,...).

With the cushioning structure of the armrest pad 20 having the above-described configuration, as shown in FIG. Two rows of spacer ribs 26, 26 (or two spacer ribs 27, 27)
Are in contact with each other. Then, as shown by the arrow, when the load on the elbow of the occupant placed on the skin material 25 acts, the spacer rib 26 is pressed against the convex portion 122.
(Or the spacer rib 27) bends and deforms like an imaginary line, and then, in the two concave portions 123, 123, the spacer ribs 26, 26 (or the spacer ribs 27, 27).
Is deformed after contact.

Therefore, the same effects as those of the first embodiment can be obtained. Further, the convex portion 122 and the concave portion 123
There is also an advantage that the soft feeling can be adjusted by changing the step.

<Modification> FIG. 8 shows an uneven portion 22 of a modification.
It is the principal part perspective view which expanded and showed 2,223. That is,
In this modification, as shown in the figure, circular convex portions 222 are formed at equal intervals on the surface of
3. The circular projections 222, 222
Correspond to the positions of the cylindrical spacer ribs 26, 26, respectively. The circular protrusions 222, 22 as described above
2 and other recesses 223 and cylindrical spacer ribs 2
It is also possible to use a buffer structure combining the elements 6 and 26.

In each of the above embodiments,
Although the armrest pad is provided in the door lining, the present invention is not limited to this, and may be applied to the waist of the door lining, and may be an armrest pad provided in the seat. Further, the shape of the concave-convex portion is arbitrary, and it goes without saying that the specific detailed structure and the like can be appropriately changed.

[0031]

As described above, according to the cushioning structure for a vehicle interior part according to the first aspect of the present invention, in particular, a plurality of spacer ribs integrally formed on the front side of the core material and on the back side of the skin material. When the load is applied from the surface side of the skin material, a plurality of spacer ribs come into contact with each of the tips on the uneven portion to bend and deform. Smooth deformation without deformation and good cushioning performance over a long period of time. In addition, it is only necessary to provide spacer ribs of a certain size on the skin material, and it is not necessary to provide two or more types of spacer ribs having different sizes, so that simplification of die processing can be achieved.

According to the cushioning structure of the vehicle interior part according to the second aspect of the present invention, at the time of no load, the tips of all the spacer ribs are in contact with the projections of the uneven portion. The spacer rib is moved to the concave portion while being bent by the pressure contact with the convex portion, and further, the spacer rib is bent and displaced by the pressure contact with the concave portion, whereby the effect according to the first aspect of the invention is obtained.

According to the cushioning structure for a vehicle interior component according to the third aspect of the present invention, since the inclined surface is formed from the convex portion to the concave portion of the uneven portion, the effect obtained by the second aspect of the invention can be improved. In addition, there is an advantage that the tip of the spacer rib smoothly moves from the convex portion to the concave portion along the inclined surface when a load is applied. Therefore, a fine and soft touch can be obtained. Another advantage is that the soft feeling can be adjusted by changing the inclination angle of the inclined surface.

According to the cushioning structure of the interior part for a vehicle according to the fourth aspect of the present invention, when no load is applied, the tip of substantially half of the spacer rib is in contact with the projection of the uneven portion, and the remaining half is approximately half Since the tip of the spacer rib is separated from the concave portion of the concave-convex portion, at the time of load operation, first,
Almost half of the spacer ribs are flexed and deformed by the pressure contact with the convex portions, and then the remaining approximately half of the spacer ribs are flexed and deformed by the pressure contact with the concave portions, whereby the effect of the first aspect is obtained.

According to the cushioning structure for an interior part for a vehicle according to the fifth aspect of the present invention, the effect of the first, second, third or fourth aspect of the invention is obtained in the armrest portion of the door lining, and a favorable result is obtained. An armrest function can be provided.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view showing a door lining as an example of a vehicle interior part to which the present invention is applied.

FIG. 2 is an enlarged view of an armrest pad of the door lining of FIG. 1 and is a partially broken perspective view showing the first embodiment.

FIG. 3 is a partially broken perspective view showing an example of the shape of a spacer rib different from the spacer rib of FIG. 2 and showing only a display material.

FIG. 4 is a vertical cross-sectional view of a main part, showing an enlarged deformation of a spacer rib when a load is applied.

5A and 5B show a modified example of the concavo-convex shape portion, in which FIG. 5A is an enlarged longitudinal sectional view of a main part in which both sides of the convex portion are inclined surfaces, and FIG. It is the principal part longitudinal cross-sectional view which expanded and showed the case where the slope was made steep.

FIG. 6 is an enlarged view of an armrest pad of the door lining of FIG. 1 and is a partially broken perspective view showing a second embodiment.

FIG. 7 is an enlarged longitudinal sectional view of a main part showing deformation of a spacer rib when a load is applied.

FIG. 8 is an enlarged perspective view of a main part of a modified example of the uneven portion.

FIG. 9 is a longitudinal sectional view showing a configuration of a conventional armrest pad.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Door lining 2 Armrest 20 Armrest pad 21 Core material 22, 122, 222 Convex part 23, 123, 223 Concave part 24, 124 Inclined surface 25 Skin material 26, 27 Spacer rib

Claims (5)

[Claims] 1. A core material, a surface material covered with a hollow portion on a surface side of the core material through a hollow portion, and a skin material formed of an elastic body; A cushioning structure for a vehicle interior component comprising: a plurality of spacer ribs extending so as to protrude to the side, wherein a concave-convex portion to which a tip of the spacer rib can contact is formed on the surface side of the core material. Cushioning structure for interior parts. 2. The cushioning structure for a vehicle interior part according to claim 1, wherein when no load is applied, the tips of all of the spacer ribs are in contact with the projections of the uneven portion. 3. The cushioning structure for a vehicle interior part according to claim 2, wherein an inclined surface is formed from the convex portion to the concave portion of the concave-convex portion. 4. When no load is applied, the tips of approximately half of the spacer ribs are in contact with the projections of the uneven portion, and the tips of the remaining half of the spacer ribs are separated from the recesses of the uneven portion. The cushioning structure for a vehicle interior part according to claim 1, wherein: 5. A door lining provided on an armrest portion of the door lining.
The buffer structure of the vehicle interior part described in the above.