JP3204606B2 - Vehicle ceiling materials - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a vehicular ceiling material.
In particular , the present invention relates to one using cardboard.

[0002]

2. Description of the Related Art Conventionally, as a ceiling material for a vehicle using corrugated cardboard, what is called a molded ceiling is disclosed in Japanese Utility Model Application Laid-Open No. 60-58.
It is publicly known from Japanese Patent Application Laid-Open No. 585 and Japanese Utility Model Laid-Open No. 5-78651. This molded ceiling is obtained by forming a skin on one side of a corrugated cardboard, or by further forming a resin layer between the skin and the corrugated cardboard and molding the ceiling material so as to substantially match the inside shape of the roof panel with a molding die. It is. And
The ceiling structure has a structure in which the molded ceiling material is fixed to the ceiling of the vehicle body with clips, screws, or the like.

In the vehicle ceiling structure thus formed, a conventional ceiling structure called a suspended ceiling, that is,
Compared to a structure in which multiple bows are suspended from the ceiling and these bows suspend the sheet-like ceiling material, the work of assembling to the vehicle is easier and the ceiling material extends along the inner surface of the roof panel. It had the characteristic that it was arranged and high quality was obtained.

[0004] As a ceiling structure of another vehicle, similarly to the above-mentioned molded ceiling, a ceiling material provided with a skin material on one side of a corrugated cardboard is used, and this ceiling material is adhered to the inner surface of a roof panel. The structure is also known. This structure can be manufactured at low cost because no molding is required. In bonding the ceiling material, a double-sided adhesive seal is attached to the back surface of the ceiling material in advance, and at the time of assembly to a vehicle, the release paper of the double-sided adhesive seal is peeled off and the ceiling material is attached to the inner surface of the roof panel. 1) Alternatively, there is a means (means 2) for applying an adhesive to the inner surface of the roof panel and thereafter bonding the back surface of the ceiling material to the roof panel.

[0005]

However, the above-mentioned molded ceiling type vehicle ceiling material requires an expensive molding die, which increases the cost, and requires time and labor for molding. Also has a problem that the cost is high, and even in the ceiling structure using this molded ceiling material, although high assembling workability and high quality can be obtained, as described above, the ceiling material However, there is a problem that the cost increases because the cost increases.

[0006] In addition, although the latter can be manufactured at low cost, it is merely a single piece, so that the roof panel is bent when the ceiling material is bonded. In this case, the bonding is performed while being deformed so as to conform to the deformed shape, and the work of deforming is troublesome and requires skill, and the workability is poor. Further, in this technique, since the means 1 can be bonded by peeling off the release paper, the workability is good in this respect, but the cost is increased. Is unnecessary and is more cost effective than means 1,
Workability is poor due to the need to apply the adhesive.

[0007] The present invention has been made in view of the conventional problems described above, aims at providing Hisage a ceiling material for easy vehicle along a roof panel inner surface shape with a low cost.

[0008]

This onset bright in order to achieve the above object, there is provided a means for solving], a cardboard which the upper and lower cores are formed by being sandwiched paper liner within which is formed in a corrugated shape made of paper, this cardboard A ceiling covering the surface of one of the liners, between the skin and the liner covered with the skin, the moisture absorption is lower than paper, and the moisture absorption of the liner is limited. A barrier layer is provided , and the end of the core in the wave direction is provided .
At the edge, cut the liner on the side without the skin.
Or make a cut in the liner in the direction orthogonal to the wave.
Rui crushed the wavy core, breaking the liner continuity
A discontinuous portion was provided .

The moisture-absorbing barrier layer may be formed as described in claim 2.
As shown, paste a film made of aluminum on the liner
And may be configured.
So, PET (polyethylene terephthalate resin)
It may be constructed by attaching a film made of material to the liner.
No.

[0010]

The operation of the present invention will be described. Since the cardboard used as the base material of the vehicle ceiling material is made of paper, it was dried to some extent by heat during the manufacturing process, but absorbs moisture in the air after the manufacturing. However, in the present invention, since the moisture absorption barrier layer is provided between the skin and the liner, the moisture absorption of the liner on the skin side is limited by the moisture absorption barrier layer, and the moisture absorption of the liner and the core on the opposite side as compared with this liner. And these extend more than liners with limited moisture absorption. Therefore, the ceiling material for a vehicle is curved such that the skin is on the inside. Furthermore, since the discontinuous portion is provided on the liner on the side where the skin is not provided at the edge portion in the direction of the wave of the center core, it is possible to easily bend in the direction in which the liner on the skin side is inside. .

In the ceiling material for a vehicle according to the second and third aspects, since the moisture absorbing barrier layer is formed by attaching a film, the manufacture is easy. According to the second aspect ,
Since an aluminum film is used, rigidity is increased and shape retention performance is improved .

[0012]

Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a sectional view showing an embodiment of a vehicular ceiling material. A vehicular ceiling material A shown in the drawing has a paper-made liner 1b, 1c above and below a corrugated core 1a made of paper.
And a moisture absorbing barrier layer 2 made of an aluminum-based film provided on the surface of a liner 1c on the lower surface of the cardboard 1 in the drawing of the cardboard 1 and attached to the surface of the moisture absorbing barrier layer 2. Felt and other skin 3
And a nonwoven fabric 4 attached to the surface of the liner 1b on the upper surface of the cardboard 1 in the figure. The core 1a and the liners 1b, 1c have 180 to 280 g /
is used as the m ^2, the nonwoven fabric 4 is 40 to 50 g / m
^The aluminum film constituting the moisture-absorbing barrier layer 2 has a thickness of 15 μm. The moisture-absorbing barrier layer 2 may be made of a resin film such as PET (polyethylene terephthalate resin) instead of an aluminum film.
What is necessary is just to provide a layer with lower hygroscopicity.

Further, as shown in the perspective view of FIG. 2, the direction of the wave of the center core 1a is changed to the left and right directions (L
R), and the direction in which the cross section of the core 1a can be seen is the front-back direction (F
R), a cut a is made in the liner 1b and the nonwoven fabric 4 at the position between the wave peaks of the center core 1a as shown in FIG. The liner 1a and the nonwoven fabric 4 are peeled off at the left and right edges as shown in FIG. 4B, or the continuity of the liner 1a in the left-right direction is cut off, or as shown in FIG. The discontinuous portion 5 is formed by crushing the core.

Next, the structure of the vehicle to which the vehicle ceiling material A is assembled will be described. As shown in the perspective sectional view of FIG.
Roof side rails 6, 6 extend in the front-rear direction at upper left and right positions of the vehicle. This roof side rail 6
Is formed in a box cross-sectional shape by the outer panel 6a and the inner panel 6b, and a drip 7 is provided at an intermediate portion of the outer panel 6a.
Are welded.

The left and right ends of the roof panel 8 are joined to the drip 7 by welding. The roof panel 8 is formed in a shape that is gently curved so that the center portion is highest in the left-right direction, and a curved portion that is curved downward and tightly along the roof side rail 6 at both left and right ends. 8a, 8a are provided, and although not shown, the front and rear ends are also gently curved so that the front and rear ends are slightly lowered in the front and rear direction. The roof panel 8 is assembled by forming a side gap 9a between the curved portion 8a and the upper outer side of the outer panel 6a of the roof side rail 6. In the figure, reference numeral 10 denotes a roof bow, and fixing holes 10a are formed at both left and right ends (only one is shown).

Next, the operation will be described. Immediately after manufacturing the corrugated cardboard 1, the vehicle ceiling material A is provided with a moisture-absorbing barrier layer 2 by attaching a film to the liner 1c, and thereafter, the skin 3 and the nonwoven fabric 4 are attached.

The cardboard 1 is made of paper,
Immediately after the production, it is dried because of its high temperature. After that, it absorbs moisture in the air with the passage of time. However, since the moisture absorption barrier layer 2 is provided on the surface of the lower liner 1c, While the portion hardly absorbs moisture, the core 1a and the upper liner 1b expand by absorbing moisture.
Leaving in air for ~ 240 minutes provided the desired curvature). Therefore, in the vehicle ceiling material of the present embodiment,
As shown in FIG. 2, the upper side extends 1% in the front-rear direction compared to the lower side, and 0.3% in the left-right direction.
Is gradually curved so that the left and right ends and the front and rear ends are bent downward as shown in FIG. 2B from the flat state immediately after the manufacture in FIG. 2A, and the bending direction is the roof panel 8.
Coincides with the overall gently curved direction.

The vehicle ceiling material of the present embodiment is used.
The ceiling structure was made up of five vehicular ceiling materials A1, A2, which were formed as described above and had a generally loosely curved shape.
FIG. 4 shows A3, A4, and A5 (note that the numbers following the symbol A are given only when they indicate specific ones of these ceiling materials for vehicles, and are otherwise simply indicated as A). In this manner, the ceiling is configured by being arranged side by side in the front-rear direction and assembled to a vehicle. The assembling procedure will be described. Into the side gap 9a. In this case, after one of the left and right non-continuous portions 5 is inserted deeply into the side gap 9a, the other non-continuous portion 5 is inserted into the other side gap 9a, and adjustment is made so that the left and right substantially equal amounts are inserted. At this time, since the discontinuous portion 5 can be easily bent downward because the liner 1b is not continuous, the discontinuous portion 5 can be easily inserted into the side gap 9a. No wrinkles or folds occur. When this plugging operation is completed, each vehicle ceiling material A is temporarily held in a state of being bridged between the left and right roof side rails 6, 6.

Next, both ends of the roof bow 10 are fixed to the roof side rails 6 and 6 with bolts 11 at the joints b (see FIGS. 4 and 6) between the vehicle ceiling materials A. As a result, the rear surface of each vehicle ceiling material A is pressed down while in contact with the inner surface of the roof panel 8. In addition,
FIG. 6 is a cross-sectional view of a portion where the roof bow 10 is attached, and the seam b is covered by the roof bow 10.

In the ceiling material A for a vehicle, the material A1 located at the front end and the material A5 located at the rear end have the front edge and the rear edge, respectively, as shown in FIGS. ), The roof front rail 12 and the roof panel 8
And a rear gap 9c formed between the roof rear rail 13 and the roof panel 8 and a front gap 9b formed between the roof rear rail 13 and the roof panel 8. Since the front and rear gaps 9b and 9c have a gently curved shape, the insertion can be performed with the gently curved shape formed by providing the moisture absorbing barrier layer 2.

As described above, in the vehicular ceiling material A of the present embodiment, the moisture absorbing barrier layer 2 made of a film having low hygroscopicity is provided between the liner 1c of the cardboard 1 and the skin 3. With such a simple configuration, it is possible to obtain a gently curved shape without molding, that is, it is possible to obtain an effect that it can be formed into a shape along the curved shape of the roof panel 8 at low cost.

Further, since the discontinuous portions 5 are provided at the left and right ends of the ceiling material A for the vehicle and are easily bent downward, it is easy to insert them into the side gaps 9a during the assembling operation. The effect that it can be obtained is obtained.

Next, the vehicle ceiling material of the present embodiment is used.
In the ceiling structure of the vehicle, the ceiling material A for the vehicle is hung between the roof side rails 6, 6 at the time of assembling.
Since only the roof bow 10 is pressed down and fixed, an expensive molded ceiling material is not used, no bonding work is required, and an effect of low cost and excellent workability can be obtained. In addition, the roof bow 10 includes a plurality of vehicle ceiling materials A.
Since it also serves as a member that hides the seam b between 1 and A5,
The effect that the appearance quality can be improved at a reasonable and low cost can be obtained.

Further, since the discontinuous portions 5 at the left and right ends of the vehicle ceiling material A are inserted into the side gaps 9a, and the left and right ends are hidden by the roof side rails 6, the end portions of the vehicle ceiling material A Can be easily bent, and the effect that no wrinkles or folds appear on the epidermis 3 even when bent can be obtained. Further, a retainer for concealing the end portion is unnecessary, and the end portion can be formed at low cost. The front and rear ends of the front and rear vehicle ceiling materials A1 and A5 are further formed by a front gap 9b and a rear side formed between the roof front rail 12 and the roof rear rail 13. Since it is inserted into the gap 9c, the effect that the end processing can be performed at low cost can be obtained.

Although the embodiment has been described with reference to the drawings, the present invention is not limited to this.
For example, the figure shows an example in which five ceiling materials A for a vehicle are arranged to form a ceiling, but the number is not limited to this. In the figure, the seam b is hidden by the roof bow 10, but the roof bow 1 is located at an intermediate position of the ceiling material A.
0 may be provided .

[0026]

As described above, the vehicular ceiling material according to the first aspect has a simple structure in which a moisture absorbing layer is provided between the skin and the liner. Corrugated cardboard material absorbs moisture in areas other than the liner whose moisture absorption is restricted by the moisture absorption barrier layer, and naturally curves so that the skin is on the inside, low cost without using a mold. The effect that a curved shape can be obtained by the means is obtained. Furthermore, since the discontinuous portion is provided on the liner on the side where the skin is not provided at the edge portion in the direction of the wave of the center core, it is possible to easily bend in the direction in which the liner on the skin side is inward, The effect that it is easy to correspond to the roof panel shape in which the curvature is sharp at the end portion in the vehicle width direction is obtained.

[0027] In claims 2 and 3 for a vehicle ceiling material according, effect is obtained that is manufactured from form to affixed the moisture barrier layer of the film is easy, also, according to claim 2 Because the thing uses an aluminum film,
This has the effect of increasing rigidity and improving shape retention performance .

[Brief description of the drawings]

FIG. 1 is a sectional view of a vehicle ceiling material according to an embodiment of the present invention.

FIG. 2 is a perspective view illustrating the configuration and operation of a vehicle ceiling material.

FIG. 3 is a perspective sectional view showing a vehicle ceiling structure using the vehicle ceiling material of the embodiment.

FIG. 4 is a perspective view illustrating a ceiling structure of a vehicle using the vehicle ceiling material according to the embodiment.

FIG. 5 is a cross-sectional view of a main part of a vehicle ceiling structure using the vehicle ceiling material of the embodiment.

FIG. 6 is a cross-sectional view of a main part of a vehicle ceiling structure using the vehicle ceiling material of the embodiment.

FIG. 7 is a sectional view of a main part of a ceiling structure of a vehicle using the vehicle ceiling material according to the embodiment.

[Explanation of symbols]

 A vehicle ceiling material 1 corrugated cardboard 1a core 1b liner 1c liner 2 moisture absorbing barrier layer 3 skin 5 discontinuous portion 6 roof side rail 6a outer panel 8 roof panel 8a curved portion 9a side gap 9b front gap 9c rear gap 10 roof bow 12 Roof front rail 13 Roof rear rail

Continuation of the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B60R 13/02 B62D 25/06

Claims (3)

(57) [Claims] 1. A vehicular ceiling material comprising a corrugated cardboard formed by sandwiching a paper-made liner above and below a paper-made corrugated core and a skin covering one liner surface of the corrugated cardboard. , between the skin and the liner covered with the skin, the moisture barrier layer, wherein the liner has a low hygroscopic property than paper to restrict the moisture provided, at the edge portion in the direction of the waves in said core , The skin is provided
Remove the liner on the side that is not
Make a cut in the orthogonal direction or crush the wavy core
A ceiling material for a vehicle , comprising a discontinuous portion in which the continuity of the liner is discontinued . 2. The moisture-absorbing barrier layer is made of aluminum.
It is noted that the film is
The vehicular ceiling material according to claim 1, wherein 3. The method according to claim 2, wherein the moisture absorbing layer is made of PET (polyethylene).
Lie terephthalate resin)
2. The device according to claim 1, wherein the device is attached to the housing.
The vehicle ceiling material as described .