JPH0731432U - Interior parts for automobiles - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide an automobile interior part that can be easily installed on the back surface of a resin core material and can absorb a shock from the side stepwise, thereby exhibiting good shock absorption characteristics. To aim. [Structure] A cushioning rib 40 is provided at a predetermined position on the back surface of the resin core material 20.
When installing, a plurality of plate-shaped ribs 41, 42, 43, 44 are arranged in a box shape or in parallel as the cushioning ribs 40, and each plate-shaped rib 41, 4 is arranged.
By making the rib heights of 2, 43 and 44 different, the impact from the side is gradually absorbed and the impact applied to the occupant is effectively absorbed.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an automobile interior part that is designed to reduce the impact transmitted to an occupant when a side impact such as a side impact is applied to a vehicle.

[0002]

[Prior art]

 Usually, a vehicle door trim is mounted on a side wall panel of a vehicle body, for example, a door panel, and an interior part such as a rear side trim is mounted on a side of a rear seat occupant of a two-door vehicle to improve interior aesthetics. It is equipped with a cushioning function to ensure the safety of passengers from impacts from the side such as a collision.

The structure of a conventional automobile door trim will be described with reference to FIGS. 12 and 13. First, the automobile door trim 2 installed on the interior side of the door panel 1 has shape retention and mounting rigidity to the door panel. And a skin material 4 that is integrally attached to the surface of the core material 3 and has a cushioning property and a decorative property. An impact absorbing pad 5 made of an elastic material such as expanded polystyrene is adhered and fixed to a predetermined position on the back surface of the adhesive sheet 3.

[0004] The cushioning property of the skin material 4 absorbs a relatively small impact, and the hollow door panel 1 is deformed against a strong impact such as a side impact. The shock absorbing function by the shock absorber, the shock absorbing function by the bending deformation of the bulging part such as the waist and the armrest part in the door trim 2, and the shock absorbing function by the elastic deformation of the shock absorbing pad 5 adhered and fixed to the back surface of the core material 3, By combining multiple impact absorption functions, the impact load from the side such as a side impact is alleviated to ensure the safety of passengers.

[0005]

[Problems to be solved by the device]

 Among these shock absorbing means, the one using the shock absorbing pad 5 has the following problems.

First, the impact absorbing pad 5 is adhered and fixed to a predetermined position on the back surface of the core material 3 with an adhesive. When a polyolefin resin having poor adhesiveness is used as the material of the core material 3, a polyolefin resin foam is used. There is no problem when using the shock-absorbing pad 5 made of a material, but in order to bond the shock-absorbing pad 5 made of a material such as polyurethane foam, the core material 3 must be preliminarily treated with a primer. Since it is necessary to bond the absorbent pad 5 to a plurality of places by adhesion, there is a problem that the mounting work is very troublesome.

Further, only a thin shock absorbing pad 5 can be installed in a place where the clearance between the door panel 1 and the door trim 2 is small, and the shock absorbing characteristic of the shock absorbing pad 5 depending on the elastic force is good. There was also the drawback that it could not be made into something.

In addition, it is desirable to absorb the impact load stepwise with respect to the impact load from the side, but the impact absorption characteristics of the impact absorption pad 5 are as follows: There was a problem that the F-S characteristics were almost linear and it was not possible to expect gradual shock absorption.

The present invention has been made in view of such circumstances, and can be installed easily, and is not affected by the clearance between the vehicle body panel and the interior parts, and the impact can be gradually increased. The purpose is to provide interior parts for automobiles that can be absorbed.

[0010]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention provides an automobile interior part in which a skin material is attached to the surface of a resin core material, and a cushioning rib is integrally formed at a predetermined position on the back surface of the resin core material. The shock-absorbing rib is characterized in that a plurality of plate-shaped ribs are arranged in a box shape or in parallel, and the height of each plate-shaped rib is made different to absorb the shock stepwise. To do.

Further, in an automobile interior part in which a skin material is adhered to the surface of the resin core material and a buffer rib is integrally formed at a predetermined position on the back surface of the resin core material, the buffer rib includes at least one buffer rib. It is characterized in that it is formed of plate-like ribs, and that the plate-like ribs are provided with a plurality of steps so as to absorb the impact stepwise.

[0012]

[Action]

 As is clear from the above configuration, since the cushioning rib is integrally molded on the back surface of the resin core material, it is easy to mold and the height of the cushioning rib depends on the clearance between the vehicle body panel and the resin core material. Can be adjusted.

Further, since the cushioning rib has a configuration in which a plurality of plate-shaped ribs are arranged in a box shape or in parallel and the heights of the plate-shaped ribs are made different, side impacts such as side impacts are generated. On the other hand, since the individual ribs are broken in stages, the impact can be absorbed in stages.

Similarly, if a step portion is set on one plate-shaped rib, each step portion is broken, so that it is possible to absorb the impact stepwise.

[0015]

【Example】

 Hereinafter, an embodiment of an automobile interior part according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a front view showing an embodiment in which an automobile interior part according to the present invention is applied to an automobile door trim, FIG. 2 is a cross-sectional view of a main part showing the structure of the automobile door trim, and FIG. 3 is the same. FIG. 4 is a perspective view showing a cushioning rib installed on a door trim, FIG. 4 is an explanatory view showing a broken state of the cushioning rib, FIG. 5 is a graph showing an F-S characteristic of the automobile door trim, and FIGS. FIG. 6 is a perspective view and a cross-sectional view showing a modified example of a cushioning rib installed in an automobile interior component according to the present invention.

First, a first embodiment of the present invention will be described with reference to FIGS. 1 to 5.

1 and 2, an automobile door trim 10 has a resin core material 20 having shape retention and mounting rigidity for a door panel, and a surface of the resin core material 20 having cushioning property and decorative property. The skin material 30 is integrally attached.

More specifically, the resin core material 20 is molded into a desired curved shape so as to bulge the waist portion 10a and the armrest portion 10b inward by means of mold press molding, injection molding or the like. .

Further, as the skin material 30, a material having an excellent cushioning property, in which a foam layer such as polyethylene foam is lined on the back surface of the PVC sheet, is used, and is integrally attached when the resin core material 20 is molded and molded. .

By the way, the feature of the present invention resides in that this shock load is effectively absorbed by the cushioning rib 40 against a relatively large impact applied from the side such as a side collision.

Reference numeral 50 in FIG. 2 indicates a door inner panel.

As shown in FIG. 3, in the present embodiment, the cushioning rib 40 is formed by continuously connecting four plate-shaped ribs 41, 42, 43, 44 in a box-shape having side walls, and The heights of the individual plate-shaped ribs 41, 42, 43, 44 are set to be successively lower.

Further, a notch 45 for promoting breakage is provided at the connecting portion of the plate-shaped ribs 41, 42, 43, 44.

The buffer ribs 40 can be formed at the same time when the resin core material 20 is press-molded.

Therefore, the troublesome work of fixing the shock absorbing pad to the predetermined position on the back surface of the resin core material by adhesion can be eliminated, and the rib height is adjusted according to the clearance between the vehicle body panel and the interior parts. Therefore, the impact absorption characteristics are not affected by the clearance.

Furthermore, a remarkable point of the present invention is that the shock absorbing characteristics of the cushioning rib 40 shown in FIG. 3 are excellent.

That is, the impact absorption characteristics will be described with reference to FIG. 4. First, when a relatively large impact such as a side impact is applied, the tip 41a of the plate-shaped rib 41 first comes into contact with the door inner panel 50 and breaks. The plate-shaped rib 41 breaks along the line 41b.

Then, when a further impact is applied, the tip ends 42 a of the adjacent plate-like ribs 42 abut the door inner panel 50, and the impact applied from the vehicle body panel 50 along the fracture line 42 b. The plate-shaped rib 42 breaks.

Next, the adjacent plate-shaped ribs 43 and 44 are sequentially broken along the respective break lines 43 b and 44 b, so that the shock can be absorbed step by step.

FIG. 5 is a graph showing the correlation between the side impact F and the deformation stroke S of the door trim 10. As is clear from the graph, the curve has a stepwise shape and is stepwise. It can be easily understood that the shock is absorbed.

FIGS. 6 to 11 show a modified example of the cushioning rib 40 used in the present invention. First, FIG. 6 shows an improved example of the first embodiment, which is four sheets. The plate-like ribs 41, 42, 43, 44 are provided with slits 46 for facilitating breakage of the plates along the load direction.

Each plate 41, 42, 43, 44 can be easily broken by this slit 46, and by adjusting the depth of the slit 46, it becomes possible to control the impact load and finely adjust. There is an advantage that measures for shock absorption can be taken.

Further, as shown in FIG. 7, the cushioning rib 40 may be constituted by three plate-shaped ribs 41, 42, 43, and a rectangular shape as shown in FIG. The shape of the box such as a triangular shape is not particularly limited.

Next, the cushioning rib 40 shown in FIG. 8 is an embodiment in which four plate-like ribs 41, 42, 43 and 44 are arranged in parallel at predetermined intervals. Even so, the plate-shaped ribs 41, 42, 43, 44 are made to have different rib heights so as to absorb the impact in a stepwise manner.

If a notch 47 is formed in the lateral direction of the plate-shaped ribs 41, 42, 43, 44 in order to promote the breakage of the plate-shaped ribs 41, 42, 43, 44, the impact load can be effectively applied. It is possible to control.

Next, the embodiment shown in FIG. 9 to FIG. 11 is an embodiment in which one plate-shaped rib 48 has a function of absorbing the impact stepwise, and the plate-shaped rib 48 has a plurality of steps. 49 is set, and a plurality of break points 49a and 49b are set for the plate-shaped rib 48, and it is possible to absorb the impact stepwise against the impact from the side. .

[0038]

[Effect of device]

 As explained above, the automobile interior part according to the present invention has the following special effects.

(1) Since the cushioning ribs are integrally formed on the back surface of the resin core material, the troublesome work of adhering and fixing the shock absorbing pad to a predetermined position on the back surface of the resin core material can be omitted, and the productivity can be improved. It has the effect of being able to.

(2) The shock absorbing performance is not affected by the clearance between the vehicle body panel and the interior parts because the shock absorbing rib is integrally formed on the back surface of the resin core material to absorb the shock. In addition, it has an effect that it is possible to improve the degree of freedom in forming interior parts.

(3) For the cushioning rib integrally formed on the back surface of the resin core material, a plurality of plate-shaped ribs are arranged in a box shape or in parallel, or one plate-shaped rib is provided with a plurality of step portions. By adopting the configuration of being provided, it is possible to absorb the impact stepwise against the impact from the side, so it has excellent impact absorption performance, and by installing slits or notches on the ribs It has an effect that excellent impact absorption characteristics can be obtained such that the load can be arbitrarily controlled.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment in which an automobile interior part according to the present invention is applied to an automobile door trim.

FIG. 2 is a sectional view taken along line II-II in FIG.

FIG. 3 is a perspective view showing an embodiment of a cushioning rib according to the present invention.

FIG. 4 is an explanatory view showing a broken state of the buffer ribs shown in FIG.

5 is an F- when an impact is applied to the door trim shown in FIG.
The graph which shows S curve.

6 is a perspective view showing a modified example of the buffer ribs shown in FIG.

FIG. 7 is a perspective view showing another embodiment of the cushioning rib used in the present invention.

FIG. 8 is a perspective view showing still another embodiment of the cushioning rib used in the present invention.

FIG. 9 is a cross-sectional view showing another embodiment of the cushioning rib used in the present invention.

FIG. 10 is a cross-sectional view showing another embodiment of the cushioning rib used in the present invention.

FIG. 11 is a cross-sectional view showing another embodiment of the cushioning rib used in the present invention.

FIG. 12 is a front view of a conventional automobile door trim.

13 is a sectional view taken along line XIII-XIII in FIG.

[Explanation of symbols]

 10 Automotive Door Trim 20 Resin Core Material 30 Skin Material 40 Buffer Ribs 41, 42, 43, 44 Plate-shaped Ribs 45 Notches 46 Slits 47 Notches 48 Plate-shaped Ribs 49 Steps 50 Door Inner Panel

Claims (2)

[Scope of utility model registration request] 1. A skin material (30) on the surface of a resin core material (20).
And a buffer rib (40) integrally formed at a predetermined position on the back surface of the resin core material (20), the buffer rib (40) includes a plurality of plate-shaped ribs ( Four
1, 42, 43, 44) are arranged in a box shape or side by side, and individual plate-like ribs (41, 42, 43,
An interior part for an automobile, characterized in that the impact is absorbed stepwise by making the height of 44) different. 2. A skin material (30) on the surface of the resin core material (20).
And a buffer rib (40) integrally formed at a predetermined position on the back surface of the resin core material (20), wherein the buffer rib (40) is at least one plate-shaped rib. (48), and by providing the plate-like rib (48) with a plurality of step portions (49),
Interior parts for automobiles, which are characterized by absorbing shock stepwise.