JPH06270674A - Interior part for vehicle - Google Patents

Abstract

PURPOSE:To relieve a shock transmitted to the passenger through an interior part for a vehicle in which A peripheral edge terminal part of an middle contact member attached to a trim body is press-fitted in a peripheral groove of the trim body, by effectively absorbing a sidewise shock load with a simple structure. CONSTITUTION:Apertures 60 and slits are formed at suitable intervals in the bottom surface 24 of a peripheral groove 23 formed in a door trim body 20, or a continuous or intermittent thin part is formed therein. Accordingly, the peripheral groove 23 has a low rigidity so as to cause the peripheral groove 234 to be broken upon application of a sidewise shock load upon sidewise bumping so as to effectively absorb the shock load.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to an automobile door trim,
Related to automobile interior parts such as rear side trim,
The present invention relates to an automobile interior part having excellent shock absorption performance against a shock applied from the side of a vehicle.

[0002]

2. Description of the Related Art Normally, a vehicle door trim is mounted on the interior side of a door panel, and interior parts such as a rear side trim are mounted on the vehicle body panel on the side of a rear seat occupant of a two-door vehicle to improve the interior aesthetics. At the same time, it has a cushioning function to protect the occupant against a side impact applied to the vehicle.

7 and 8 are a front view and a cross-sectional view showing an automobile door trim mounted on the interior side of a door panel. An automobile door trim 1 is a door trim main body 2 formed into a desired curved surface shape, and The door trim body 2 is generally constructed of an intermediate contact member 3 mounted on the front surface side substantially in the center thereof.

The door trim main body 2 has a core material 2a having shape retention and mounting rigidity with respect to the vehicle body panel 4, and a skin material 2 attached to the surface of the core material 2a and having cushioning performance.
b, and the center contact member 3 has a cloth 3a different in color and texture from the skin material 2b of the door trim body 2.
A material obtained by laminating a pad material 3b such as polyurethane foam on the back surface is used. Normally, the peripheral edge of the inner contact member 3 is press-fitted into the circumferential groove 5 provided in the door trim main body 2, whereby the end treatment of the inner contact member 3 is performed. The door trim 1 having excellent appearance performance is constructed.

[0005]

By the way, in the conventional automobile door trim 1, a shock absorbing pad 6 such as styrene foam is bonded and fixed to a core material 2a of the door trim body 2 at an appropriate position, so that a relatively small lateral portion is formed. The external force from the outer skin 2b of the door trim body 2 or the pad material 3b of the center contact member 3 absorbs the impact load, and is protected against a relatively large side impact. In reality, the shock absorbing pad 6 absorbs the shock.

However, the shock absorbing pad 6 is expensive,
It is necessary to adhere and fix a plurality of pieces to appropriate positions on the back surface of the core material 2a of the door trim 2, which is troublesome in mounting work, and
It has been pointed out that it is difficult to secure a constant shock absorbing function for a long period of time, such as deterioration due to aging, or the pad function being influenced by clearance.

In particular, when the door trim 2 is formed with a peripheral groove 5 in consideration of the end treatment of the contact member 3, the peripheral groove 5 is formed.
As a result, the rigidity of the core material 2a is reinforced, and the shock absorbing function due to the breakage of the core material 2a cannot be expected. Therefore, the actual situation depends entirely on the shock absorbing pad 6 as described above.

The present invention has been made in view of the above circumstances, and in an automobile interior part in which a trim body is provided with an intermediate contact member, when a side impact is applied,
By inducing breakage of the trim body, instead of the conventional shock absorbing measures for shock absorbing pads, it is possible to effectively absorb side impacts with a simple structure. Is intended.

[0009]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention has a trim body mounted in a vehicle body panel, in which a center contact member is attached to a substantially central portion of a surface thereof, and a peripheral edge of the center contact member is trimmed. In an automobile interior part press-fitted into a peripheral groove of a main body, the peripheral groove is set as a low-rigidity portion in order to facilitate breakage of the peripheral groove in the trim body.

As a concrete structure in which the peripheral groove formed in the trim body is a low rigidity portion, the peripheral groove is formed along the bottom surface of the peripheral groove.
Apertures or slits may be provided at appropriate intervals,
Further, the thin portion may be formed continuously or intermittently.

[0011]

As is apparent from the above structure, if a side impact is applied to the vehicle body panel, the trim body and the center contact member mounted on the interior side of the vehicle body panel may collide with a part of the occupant's body. Since the bottom of the peripheral groove of the trim body is provided with openings or slits at appropriate intervals, or thin portions are provided continuously or intermittently, and the peripheral groove is set as a low rigidity portion. When an impact of a predetermined value or more is applied, the circumferential groove is broken, so that the trim body and the intermediate member defined by the circumferential groove fall off to the vehicle body panel side.

The impact can be effectively absorbed by the breakage of the circumferential groove.

Further, since an opening or slit is formed on the bottom surface of the circumferential groove or a thin portion is provided, no adverse effect is exerted on the appearance or feel of the circumferential groove, and the circumferential groove located on the inner back side relative to the product surface is formed. Occurrence of the occupant is less likely to occur due to the breakage than the breakage.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of an automobile interior part according to the present invention will be described below in detail with reference to the accompanying drawings.

FIG. 1 is an external view showing an automobile door trim to which the present invention is applied, FIG. 2 is a cross-sectional view showing the structure of the automobile door trim, and FIG. 3 is a perspective view of a main part of the automobile door trim as viewed from the back side. FIG. 4 is a cross-sectional view showing the operation of the vehicle door trim, and FIGS. 5 and 6 are perspective views of essential parts seen from the back side showing another embodiment of the vehicle door trim to which the present invention is applied.

First, referring to FIGS. 1 and 2, an automobile door trim 10 is roughly composed of a door trim main body 20 and an intermediate contact member 30 mounted on a substantially central portion of the surface of the door trim main body 20. Is formed into a required shape, and a core material 21 having a shape-retaining property and a mounting rigidity to a vehicle body panel and a skin material 22 having a decorative property and a cushioning property are integrally attached to the surface of the core member 21. .

In this embodiment, the core material 21 is formed into a curved shape as shown in FIG. 2 by thermocompression molding a wood fiber mat, and the skin material 22 is made of polyethylene on the back surface of the PVC sheet. A laminated sheet having a good cushioning property backed by a foam layer such as foam is used.

The skin material 22 is integrally attached to the core material 21 by vacuum forming.

On the other hand, the contact member 30 is the door trim body 2
It is preferable to use a material having a different texture and feel from the skin material 22 of No. 0, and in this embodiment, a cloth 31 having a pad material 32 such as polyurethane foam lined on the back surface of the cloth 31 is used. The peripheral edge end 33 of the center contact member 30 is grained in the circumferential groove 23 formed in the door trim body 20 while being integrated with the front surface side of the door trim 20, and the end contact treatment of the center contact member 30 is performed.

The door trim 10 is attached to the door inner panel 40 via a clip or the like (not shown), and a shock absorbing pad 50 is fixed to an appropriate portion of the back surface of the core 21.

A feature of the present invention is that, when a side impact such as a side collision is applied to the vehicle, the impact load is effectively absorbed and the occupant is reliably protected.

That is, as shown in FIG. 3, in the door trim 10 according to the present invention, along the bottom surface 24 of the circumferential groove 23,
Rectangular openings 60 are opened at appropriate intervals.

In this embodiment, the openings 60 are spaced at 25 intervals.
mm, and the size of the opening 60 is set to 3 × 10 mm.

Therefore, in the case of a comparatively small impact, it is absorbed by the cushioning function of the skin material 22 of the door trim body 20, but when a comparatively large impact is applied from the side of the vehicle, the impact applied to the center contact member 30. Is above a certain value,
Due to the opening 60, the core material 21 of the door trim body 20 is surrounded by the circumferential groove 2.
As shown in FIG. 4, the peripheral groove 23 is ruptured due to the low rigidity set along the line 3, so that a relatively large impact can be effectively absorbed. In addition, the center contact member 30 and the door trim body 20 of this portion are the door trim 10
And the door inner panel 40.

Thus, along the bottom surface 24 of the circumferential groove 23,
By providing the core member 21 with the opening 60, the circumferential groove 23 has low rigidity, and the occupant is provided with an impact absorbing function accompanying the fracture of the circumferential groove 23 against a relatively large side impact such as a side collision. The impact applied can be reduced.

Further, if the door trim 10 is provided with a shock absorbing function due to the breakage of the circumferential groove 23 as in the present invention, many shock absorbing pads 50 are set as in the conventional measures against the collapse of the shock absorbing pad 50. Since it is not necessary to install the shock absorbing pad 50, it is possible to reduce the number of installation locations of the shock absorbing pad 50, and the opening 60 may be formed at the same time when the core material 21 is press-molded, or the opening 60 may be provided by a separate piercing process, which is advantageous in the manufacturing process. is there.

Further, by arbitrarily setting the size of the opening 60 and the set interval, it is possible to freely control the impact value at which the circumferential groove 23 breaks.

Moreover, since the opening 60 is set along the bottom surface 24 of the circumferential groove 23, it does not appear as a dent in the product appearance and is not touched by the occupant. The quality performance of the upper door trim 10 is not deteriorated.

Further, as shown in FIG. 4, when the peripheral groove 23 is broken by the impact load from the side, and the impact is absorbed, the peripheral groove 23 is closer to the inner back side than the product surface. Since it is located, there are few problems that the fractured part becomes an edge and damages the occupant.

In this embodiment, the door trim body 20 is constituted by the wood-based core material 21 and the skin material 22 lined with polyethylene foam on the back surface of the vinyl chloride sheet, but a thermoplastic resin plate, a thermoplastic composite resin plate or the like is heated. The core material 21 may be molded by molding, or the core material 21 may be molded by injection molding or stamping molding.

Similarly, the skin material 22 may be a vinyl chloride sheet alone, and in addition to vacuum bonding, the core material 21 and the skin material 2 are used.
It is also possible to simultaneously form 2 and 2 by simultaneous press molding and stamping molding method.

Alternatively, the center contact member 30 may use only the cloth 31, and the pad member 32 may be omitted.

Next, FIG. 5 shows a second embodiment of the present invention. The same parts as those in the first embodiment are designated by the same reference numerals, and the description thereof will be omitted.

In the second embodiment, slits 61 are formed in the core material 21 at appropriate intervals along the bottom surface 24 of the circumferential groove 23.

Also in this embodiment, when the vehicle is subjected to a side impact load such as a side collision, the surface of the contact member 30 collides with a part of the occupant's body, and the slit 61 breaks the circumferential groove 23. The operational effect that the shock given to the occupant can be alleviated by absorbing the shock caused by the breakage is similar to that of the first embodiment. However, in this embodiment, the slit 61 is formed instead of the opening 60. There are advantages that it is easy to form a break line connecting the 61, the breakage of the circumferential groove 23 can be promoted, and the adhesive strength of the center contact member 30 to the terminal 33 is increased.

Further, according to the present invention, the circumferential groove 23 is set as a low-rigidity portion, so that the circumferential groove 23 can be easily broken,
Since the shock applied to the occupant is alleviated by the shock absorption due to the breakage, instead of the opening 60 and the slit 61, a thin portion 62 is formed continuously or intermittently in the circumferential groove 23 as shown in FIG. However, the same effect can be obtained, and giving these appropriate variations does not depart from the spirit of the present invention.

[0037]

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

(1) By setting openings, slits, thin-walled portions, etc. along the bottom surface of the circumferential groove provided in the trim body and setting the circumferential groove as a low-rigidity portion, side collisions, etc. When an impact is applied, the peripheral groove is broken, so that the impact can be effectively absorbed and the impact applied to the occupant is relaxed.

(2) Since the peripheral groove of the trim body is set to a low-rigidity portion and the shock is absorbed by breaking the peripheral groove, compared with the conventional safety measures that the impact-absorbing pad is completely closed,
Since the number of pad setting points can be reduced and the number of mounting steps can be significantly reduced, it has an effect of greatly contributing to cost reduction.

(3) Since the openings, slits, and thin portions are set in the circumferential groove, the appearance and feel are not impaired, and the breaks are located inside and inside the product surface. Occupants are less likely to be damaged by the fractured part.

(4) By appropriately selecting the intervals and shapes of the openings, slits, thin portions, etc. set in the circumferential groove, the impact value to be the target can be freely controlled, and detailed impact absorption measures can be taken. Has the effect.

[Brief description of drawings]

FIG. 1 is a front view showing an automobile door trim to which a first embodiment of the present invention is applied.

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

FIG. 3 is a perspective view of a main part of the door trim shown in FIG. 1 viewed from the back side.

4 is a cross-sectional view showing the operation of the automobile door trim shown in FIG.

FIG. 5 is a perspective view of an automobile door trim showing a second embodiment of the present invention as seen from the back side.

FIG. 6 is a perspective view of an automobile door trim showing still another embodiment of the present invention viewed from the back side.

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

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

[Explanation of symbols]

 10 Automotive Door Trim 20 Door Trim Main Body 21 Core Material 22 Skin Material 23 Circumferential Groove 30 Center Member 31 Cross 32 Pad Material 40 Door Inner Panel 50 Impact Absorption Pad 60 Opening 61 Slit 62 Thin-walled Part

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shozo Suzuki 2 Takara-cho, Kanagawa-ku, Yokohama-shi, Kanagawa Nissan Motor Co., Ltd.

Claims (3)

[Claims] 1. A trim member (30) mounted on a trim body (20) installed in a vehicle body panel (40) substantially at the center of the surface, and a peripheral end (33) of the trim member (30) is attached to the trim body. In an automobile interior component (10) press-fitted into the circumferential groove (23) of the (20), the circumferential groove (23) is formed in order to facilitate breakage of the circumferential groove (23) in the trim body (20). Interior parts for automobiles characterized by being set as a low-rigidity part. 2. An opening (60) or a slit (61) for facilitating breakage of the circumferential groove (23) is appropriately arranged on the bottom surface (24) of the circumferential groove (23) of the trim body (20). The interior part for an automobile according to claim 1, wherein the interior part is opened. 3. A thin portion (62) for facilitating breakage of the circumferential groove (23) is formed continuously or intermittently on the bottom surface (24) of the circumferential groove (23) of the trim body (20). The automobile interior part according to claim 1, wherein