JP2577020Y2 - Car door trim - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door trim for a vehicle, and more particularly to a door trim for a vehicle in which a relatively small impact at a waist portion is effectively absorbed so that a good feel at the waist portion can be obtained. About.

[0002]

2. Description of the Related Art Conventionally, a door trim is provided on the indoor side of a door panel for the purpose of enhancing the aesthetics of the room and protecting an occupant from an impact applied to a vehicle body.

The general structure of a door trim for an automobile and a structure for attaching the door trim to a door panel will be described with reference to FIGS.

[0004] First, the door trim 1 is often formed into a curved surface in terms of molding, and the surface of a core 2 made of a resin molded body formed into a required shape by injection molding or stamping molding is excellent in cushioning properties. A skin material 3 is adhered, and a stopper rib 5 for enhancing rigidity is integrally provided on the back surface of the waist portion 4 when the core material 2 is formed.

The stopper ribs 5 are formed on the back surface of the core member 2 at appropriate intervals along the longitudinal direction of the vehicle.
As shown in FIG. 8, it comes into contact with the door inner panel 6 and
The door trim 1 has a position regulating function at the waist portion 4.

Usually, in order to maintain the shape retention of the door trim 1, the thickness of the core member 2 is 2.0 to 2.5 mm, and the stopper rib 5 having a reinforcing function is provided on the back surface of the waist portion of the core member 2. , The rigidity at the waist portion 4 of the door trim 1 is very strong.

Therefore, as shown in the graph of FIG.
The displacement amount of the waist portion 4 of the door trim 1 is small with respect to the impact load from the side. For example, when the stopper rib 5 is abolished depending on the part in order to reduce the impact, an attempt is made to set the insert in the mold. In such a case, since no rigidity can be expected at all, countermeasures such as installing an expensive shock absorbing pad 7 as shown in FIG. 10 are taken.

[0008]

As described above, in the conventional vehicle door trim 1, the rigidity of the waist portion 4 is greatly enhanced by the stopper rib 5,
Although the mounting stability at the waist portion 4 of the door trim 1 is improved, when the occupant's shoulder or chest touches the waist portion 4 of the door trim 1, a good feel (soft feeling) is not always provided.
On the contrary, if the stopper rib 5 is abolished, no rigidity can be obtained at all. Therefore, it is pointed out that a cost is increased because an expensive shock absorbing pad 7 must be separately installed. .

The present invention has been made in view of such circumstances, and it is an object of the invention to provide a door trim for a vehicle which can provide a good feeling at the waist portion of the door trim and has a simple structure.

[0010]

In order to achieve the above-mentioned object, the present invention provides a single core material formed into a required curved surface by injection molding or stamping molding, or a skin material integrally attached to the surface of the core material. In the automotive door trim mounted on the indoor side of the door inner panel, the thickness of the waist portion of the core material is set to be thin,
A flexible portion is provided to the waist portion, and a base portion of a stopper rib integrally formed at an appropriate interval along a longitudinal direction of the vehicle on a back surface of the waist portion extends along a vehicle width direction of the stopper rib. It is characterized in that a lightening portion that allows bending is provided.

Further, the present invention provides a door trim for a vehicle in which a waist garnish made of a resin molded body is installed on a back surface of a waist portion of a core material in a door trim provided on the indoor side of a door inner panel. The waist garnish is provided with flexibility, and the base of the stopper rib integrally formed at an appropriate interval along the longitudinal direction of the vehicle on the back surface of the waist garnish has a vehicle width of the stopper rib. It is characterized in that a lightening portion that allows deflection along the direction is provided.

[0012]

As is apparent from the above configuration, the waist portion of the core material or the waist garnish is set to be thin, so that the waist portion is easily bent.

Further, the stopper rib formed integrally with the back surface of the waist portion or the back surface of the waist garnish is provided with a hollow portion which allows bending along the vehicle width direction, so that the stopper rib is also easily bent.
Due to the flexibility of the waist or the waist garnish of the core material and the flexibility of the stopper ribs, these impacts can be effectively absorbed by a flexural deformation of the waist and the stopper ribs for a relatively small impact.

[0014]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a door trim for a vehicle according to the present invention;

1 to 3 show a first embodiment of the present invention. FIG. 1 is a perspective view of a vehicle door trim according to the present invention, and FIG. 2 shows a state where the vehicle door trim is mounted on a door inner panel. FIG. 3 is a graph showing a shock absorbing performance at a waist portion of the vehicle door trim.

4 and 5 are an explanatory view and a sectional view showing a second embodiment of the vehicle door trim according to the present invention.
FIG. 6 is a sectional view showing the configuration of a further embodiment of the vehicle door trim according to the present invention.

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

In FIG. 1 and FIG. 2, a door trim 10 for an automobile according to the present invention has a good cushioning property on the surface of a core material 20 made of a resin molded body formed into a required shape by injection molding or stamping molding. The core material 20 is integrally provided with stopper ribs 22 on the back surface of the waist portion 21 at appropriate intervals along the longitudinal direction of the vehicle. .

The vehicle door trim 10 is mounted on the indoor side of the door inner panel 40 via a fixing means such as a clip (not shown), and the stopper rib 22 abuts or slightly contacts the door inner panel 40 at the waist 21. Are positioned in such a way as to confront each other (a position where they come into contact with each other if pressed slightly), so that they have a function of preventing rattling in the vertical direction and the vehicle width direction.

The feature of the present invention resides in that the feel at the waist portion of the door trim 10 is favorably maintained with a simple structure.

That is, a concave portion 21a (portion defined by a dotted line in FIG. 1) is formed in the waist portion 21 of the core member 20, the thickness of the concave portion 21a is set to 1.0 to 1.2 mm,
The thickness of the core member 20 is reduced to approximately half the thickness (2.0 to 2.5 mm) of the general portion, and the stopper rib 2
A lightening portion 23 is provided at the base of the stopper rib 22 so as to allow the flexure along the vehicle width direction 2.

As described above, in this embodiment, the core material 2
The thickness of the waist portion 21 of the door trim 10 is set to be thin, and the lightening portion 23 is formed in the stopper rib 22. When it hits the waist portion, the waist portion 21 can be easily bent due to its thinning, and the stopper rib 22 is also easily bent by the lightened portion 23, so that a relatively small impact load can be effectively absorbed. And a soft feel can be ensured.

Further, since the lightening portion 23 is formed at the base of the stopper rib 22, the rigidity of the stopper rib 22 is reduced, and when a relatively strong impact is applied from the side of the vehicle such as a side collision. The stopper rib 22 is easily broken,
The impact applied to the shoulder and the chest of the occupant can be greatly reduced by absorbing the impact accompanying the breaking of the stopper rib 22.

This will be described with reference to the graph of FIG.
Since the waist 21 of the door trim 10 bends in the area (a) with respect to a relatively small impact, the impact load can be effectively absorbed with respect to the initial small impact, and thereafter, the impact load can be continued. Is added, the stopper rib 2
Reference numeral 2 indicates that the base portion is easily broken due to the relationship with the lightening portion 23, and before and after the breaking point shown in (b) shows the shock absorption characteristics as shown in the graph of FIG.

As described above, the amount of bending at the waist portion 21 of the door trim 10 is large with respect to the initial weak impact,
The impact can be effectively absorbed, and the stopper rib 22 is easily broken due to the cutout portion 23. The impact absorption due to the breakage of the stopper rib 22 allows the stopper rib 22 to effectively absorb a relatively strong impact load. Can be alleviated, the feel at the waist portion is good, and the impact can be effectively absorbed.

In order to form the stopper rib 22 having the above-described structure on the core member 20, the stopper rib 22 can be easily formed by injection molding or stamping molding. There is an advantage that the production can be performed at a low cost as compared with the installation.

FIGS. 4 and 5 show a second embodiment of the automobile door trim 10 according to the present invention. In this embodiment, as shown in FIG.
A pressure receiving plate 24 orthogonal to the stopper rib 22 provided on one back surface is integrally formed.

Accordingly, as shown in FIG. 5, since the impact load from the door inner panel 40 is widely received by the pressure receiving plate 24, the flexibility of the stopper rib 22 is further improved, and the soft feeling at the waist portion of the door trim 10 is improved. There is an advantage that it can be further improved.

Next, FIG. 6 shows a third embodiment of the present invention. An automobile door trim 50 of this embodiment is formed by pressing a fiber board, a composite resin board or the like into a required shape by press molding. A waist garnish 70 made of a resin molded body is fixed to the back surface of the waist portion 60, and a skin material 80 is integrally adhered along the surface of the core material 60. In the waist garnish 70, a thin portion 70a having a thickness of about 1.0 to 1.2 mm is set, and a stopper rib 71 formed on the back surface of the waist garnish 70 along the longitudinal direction of the vehicle is provided. , Stopper rib 71
A lightening portion 72 is formed so that is easily bent in the vehicle width direction.

Also in this embodiment, the same effect as that of the first embodiment is obtained, in which a good feel of the waist portion of the door trim 50 can be obtained, and further, excellent shock absorption characteristics accompanying breakage of the stopper rib 71 can be obtained. Can be

[0031]

As described above, the vehicle door trim according to the present invention has the following special effects.

(1) The thickness of the waist portion of the core material or the thickness of the waist garnish is set to be thin, and
The stopper rib is provided with a hollow portion that allows deflection along the vehicle width direction, so that the waist portion satisfactorily bends against a relatively small impact applied to the waist portion of the door trim, so that this impact load is effectively absorbed. This has the effect that the feel at the waist portion of the door trim can be favorably maintained.

(2) The stopper rib integrally provided on the back surface of the waist portion or the back surface of the waist garnish of the core member is formed with a lightening portion allowing deflection along the vehicle width direction. Has the effect that it can be easily broken when a relatively strong impact is applied, and it can effectively absorb this impact load even for relatively strong impacts such as side impacts by absorbing the impact due to the stopper rib rupture. .

(3) The waist portion or the waist garnish of the core material is set to be thin, and the hollow portion is provided at the base of the stopper rib, so that it has both moderate rigidity and good flexibility. It can be easily molded by injection molding or stamping molding, so it can be implemented at lower cost compared to the conventional method of installing nests in the mold and attaching the shock absorbing pad, and the cost of the product This has the effect of greatly contributing to down.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a first embodiment of a vehicle door trim according to the present invention.

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

FIG. 3 is a graph showing the shock absorption characteristics of the vehicle door trim according to the present invention.

FIG. 4 is a perspective view of the second embodiment of the automotive door trim according to the present invention, as viewed from the back side of the waist;

FIG. 5 is a sectional view showing a state where the door trim shown in FIG. 4 is attached to a door inner panel.

FIG. 6 is a sectional view showing a third embodiment of the vehicle door trim according to the present invention;

FIG. 7 is a perspective view showing a conventional automobile door trim.

FIG. 8 is a sectional view taken along line VIII-VIII in FIG. 7;

FIG. 9 is a graph showing a shock absorbing characteristic at a waist portion of a conventional automobile door trim.

FIG. 10 is a sectional view showing a shock absorbing structure in a conventional automobile door trim.

[Explanation of symbols]

 10,50 Door trim for automobile 20 Core 21 Waist 22 Stopper rib 23 Lightening 24 Pressure receiving plate 30 Skin material 40 Door inner panel 70 Waist garnish 71 Stopper rib 72 Lightening

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-3-65432 (JP, A) JP-A-3-32517 (JP, U) JP-A 64-37721 (JP, U) JP-A 61- 125820 (JP, U) Japanese Utility Model 6-45811 (JP, U) Japanese Utility Model 2-1433311 (JP, U) Japanese Utility Model 6-57711 (JP, U) Japanese Utility Model 4-95516 (JP, U) (58) Field surveyed (Int. Cl. ⁶ , DB name) B60J 5/00 B60J 5/04 B60R 21/04

Claims (2)

(57) [Scope of request for utility model registration] 1. A door inner made of a single core material (20) formed into a required curved shape by injection molding or stamping molding, or a surface material (30) integrally adhered to the surface of the core material (20). In the automobile door trim mounted on the indoor side of the panel (40), the thickness of the waist portion (21) of the core material (20) is set to be thin, and the waist portion (21) has flexibility. A stopper rib (22) is formed at the base of a stopper rib (22) integrally formed on the back surface of the waist portion (21) at appropriate intervals along the longitudinal direction of the vehicle.
A door trim for an automobile, characterized in that a lightening portion (23) is provided to allow bending along the vehicle width direction. 2. A door trim for an automobile, wherein a waist garnish (70) made of a resin molded body is installed on a back surface of a waist portion of a core material (60) in a door trim (50) provided inside a door inner panel (40) indoors. In the waist garnish (70), a thin portion (70a)
Is set, the waist garnish (70) is given flexibility, and the waist garnish (7)
At the base of a stopper rib (71) integrally formed at appropriate intervals along the longitudinal direction of the vehicle on the back surface of 0),
A door trim for an automobile, comprising a hollow portion (72) for allowing a stopper rib (71) to bend in a vehicle width direction.