JP3070904B2 - Roof trim mounting structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for mounting a roof trim mounted on a roof panel in which the environmental temperature fluctuates greatly, and more particularly, to a structure for removing unpleasant noise such as a rubbing sound between the roof trim and the roof panel. The present invention relates to a roof trim mounting structure for preventing generation of the roof trim.

[0002]

2. Description of the Related Art Roof trims installed in roof panels of automobiles are desired to be lightweight, and have excellent rigidity and heat resistance. Therefore, in recent years, PPO (polyphenylene oxide) resin foam has attracted attention. ing.

As shown in FIG. 7, a clip mounting method is often used for mounting the roof trim 1 on a roof panel.

[0004] That is, the roof trim 1 has a structure in which a skin material 3 such as cloth is adhered to the surface of a core material 2 made of a PPO resin base material, and a predetermined position on the back surface of the core material 2 (3 along the rear edge side). A bracket 4 made of an ABS resin plate or the like is adhesively fixed to a hot-melt 5 via a hot melt 5. After a clip 6 is inserted and fixed to the bracket 4, the front end of the roof trim 1 is locked to the roof panel 7. In this state, the rear side of the roof trim 1 faces the roof panel 7 side, and the fitting piece of the clip 6 mounted on the roof trim 1 is press-fitted into the mounting hole 7a of the roof panel 7 to thereby perform the roof trim. 1 is attached to the roof panel 7.

Further, projections 8 are formed at the four corners of the bracket 4 to contact the roof panel 7, and in reality, the projections 8 securely hold the clip 6.

[0006]

When the projections 8 abutting on the roof panel 7 are set on the bracket 4 as described above, the ceiling of the automobile becomes extremely hot, so that the roof panel 7 and the roof trim 1 are not connected to each other. Due to the difference in heat shrinkage between the roof trim 1 and the roof trim 1, heat shrinkage, particularly shrinkage in the front-rear direction, is likely to occur. It was pointed out that the driver could not concentrate on driving.

Further, there is a problem in that the coating of the roof panel 7 is peeled off due to frictional resistance between the roof panel 7 and the projections 8, rust is easily generated, and the durability of the roof panel 7 is reduced.

SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and it is possible to reliably prevent the generation of unpleasant noise such as a rubbing noise between a roof trim and a roof panel with a simple configuration and to improve the roof panel. It is an object of the present invention to provide a roof trim mounting structure with improved durability.

[0009]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a roof trim having a core material surface and a skin material adhered to a predetermined portion of the core material rear surface through a hot melt. A clip is inserted into a bracket, the clip is fitted into a mounting hole of the roof panel, and the roof trim is mounted on the roof panel. In the roof trim mounting structure, the bracket is elastically mounted on at least two places of the bracket. A spring flange is formed integrally with the bracket, and the elasticity of the spring flange reduces sliding resistance between the bracket and the roof panel.

[0010] Further, the spring flange itself is formed with a projection which is in line contact with the roof panel along the front-rear direction or linearly contacts the roof panel along the front-rear direction. .

The spring flange may be set at each corner of the bracket.

[0012]

As is apparent from the above configuration, when the roof trim is mounted on the roof panel via the clip, the spring flange formed on the bracket fixed to the roof trim,
Alternatively, since the projection of the spring flange is in elastic contact with the roof panel, the sliding resistance between the roof panel and the bracket is greatly reduced even if the roof trim contracts due to a change in environmental temperature.

Further, if the spring flange and the roof panel are in elastic contact with each other in a line contact state, the sliding resistance between the roof panel and the bracket is further reduced.

The spring flange on one side causes stronger interference than the spring flange on the other side due to dimensional errors, mounting errors, thermal deformation, etc. of the roof trim, but this strong interference is avoided by the elastic action of the spring flange. However, this effect is more effective when the spring flange is set at each corner of the bracket.

[0015]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view of a roof trim mounting structure according to an embodiment of the present invention;

FIG. 1 is an overall view showing a first embodiment of a roof trim mounting structure according to the present invention, FIG. 2 is a perspective view of a bracket, and FIG. 3 is a cross-sectional view showing a roof trim mounting structure. 4 to 6 are perspective views showing another embodiment of the bracket used in the present invention.

In FIG. 1, a roof trim 10 is made of PP.
It is composed of a laminate of a core material 11 using an O resin base material and a skin material 12 such as a nonwoven fabric adhered and fixed to the surface of the core material 11.

More specifically, the core material 11 has a structure in which a PPO resin skin layer 11b is integrally formed on the front and back surfaces of a PPO resin foam layer 11a, and the PPO resin in this embodiment is a pure PPO resin. Instead of PPO, a material modified with polystyrene in consideration of cost and the like is used.

Further, the basis weight of the PPO resin foam layer 11a is 500-600 g / m ² , and the PPO resin skin layer 11
The thickness of b is 0.18 mm, and the total thickness of the PPO resin base material at the time of the raw material 3.5 mm is 130 mm.
In the state of softening by heating to ~ 140 ° C, the total thickness of the PPO resin base material is expanded to 6 to 8 mm, and the core material 11 is obtained by cold press molding so that the total thickness is set to 5 mm. .

On the other hand, a cloth is used as the skin material 12, and a hot melt film (not shown) is laminated on the back surface of the cloth.
After preheating, the skin material 12 and the core material 11 are firmly integrated via the hot melt film. In addition, a nonwoven fabric may be used as the skin material 12.

A bracket 20 made of an ABS resin plate is fixed via a hot melt 30 at appropriate intervals along the rear edge of the back surface of the core material 11, and a clip 40 is attached to the bracket 20. Have been.

In order to attach the roof trim 10 to the roof panel 50, the front end of the roof trim 10 is locked in the roof panel 50 in the mounting hole 51 of the roof panel 50 at the rear edge of the rear surface of the roof trim 10. The roof trim 10 is mounted on the roof panel 50 by press-fitting the mounted clip 40.

The roof panel 50 is formed with an embossed recess 52 substantially equal to the bracket 20 around the mounting hole 51, so that the roof trim 10 and the roof panel 50
Is set small.

The feature of the present invention is that the roof trim 1
Even when a thermal contraction force acts on the roof trim 50, the mounting structure of the roof trim 10 can suppress the generation of the rubbing noise between the roof trim 10 and the roof panel 50 and can reliably prevent the peeling of the paint on the roof panel 50. Is to provide.

That is, the clip 4 is attached to the bracket 20.
A clip seat 21 for attaching the clip seat 0 is formed, and a spring flange 22 is formed on the front and rear sides of the clip seat 21 so as to sandwich the clip seat 21.

The spring flange 22 is connected to the roof panel 5
It is formed as a curved tongue so that it is in line contact with 0 along the front-rear direction.
A plurality of slits 23 extending along the width direction are provided on the inner surface of the tongue-shaped spring flange 22 at appropriate intervals.

Therefore, when the roof trim 10 is mounted on the roof panel 50, the spring flange 22 of the bracket 20 resiliently contacts the roof panel 50 in a linear manner. Even if it works, the sliding action between the roof panel 50 and the bracket 20 is greatly reduced by the elastic action of the spring flange 22, so that unpleasant noise such as rubbing noise does not occur. The coating on the surface does not peel off, and the durability of the roof panel 50 is also improved.

The spring flange 22 is mounted on the roof panel 5.
Due to the elastic contact with the surface 0, even when the roof panel 50 and the bracket 20 are not in a parallel state due to a dimensional error, a mounting error, and thermal deformation of the roof trim 10, the elasticity of the spring flange 22 makes the spring flange 22 stronger. Interference can be avoided.

Next, FIG. 4 shows an embodiment in which the spring flanges 22 are installed at four corners of the bracket 20. In this embodiment, an installation error, a dimensional error, or thermal deformation of the roof trim 10 is shown. This is particularly effective in the case where the above-mentioned situation occurs. If the distortion is absorbed by the elastic deformation of one spring flange 22, the clip 40 can be securely held by the remaining three spring flanges 22.

Further, as a modified example of the spring flange 22,
As shown in FIG. 5, an H-shaped slit 24 is opened,
The opposite spring flange 22 may be set, or a semi-cylindrical projection 25 may be formed at the tip of the spring flange 22 so that the projection 25 elastically contacts the roof panel 50 linearly.

Similarly, as shown in FIG. 6, a U-shaped slit 26 may be opened, and a spring flange 22 provided with a semi-cylindrical projection 25 at the end may be set.

As described above, according to the present invention, the clip 40 is elastically held by the spring property of the spring flange 22 provided on the bracket 20 and the spring flange 22 is
Is in line contact with the roof panel 50, so that even if thermal contraction of the roof trim 10 occurs, the spring flange 22 only slides softly on the roof panel 50, and rubbing noise is frequent as in the related art. , The quietness of running is not disturbed, and the problem of peeling of the paint on the roof panel 50 can be effectively solved.

In the embodiment shown in FIGS. 5 and 6, the molds for forming the bracket 20 need only be a core mold and a cavity mold, and do not require a slide mold. Therefore, the mold structure can be simplified and the cost can be reduced. There is an advantage of inviting down.

In the present invention, the set number and shape of the spring flanges 22 are not particularly limited.

[0035]

As described above, the present invention has the following special effects.

(1) In the roof trim mounting structure according to the present invention, spring flanges elastically provided on the roof panel surface are formed in at least two places of the bracket in order to hold the clip fitted to the roof panel. Due to the difference in the thermal contraction rate between the roof trim and the roof panel, even if the roof trim contracts with respect to the roof panel, the sliding resistance is reduced by the elasticity of the spring flange. As a result, it is possible to effectively prevent the generation of low-grade sounds such as rubbing noise, maintain the quietness of the cabin, and at the same time, solve the problem of peeling off the surface coating of the roof panel due to rubbing, improving the durability of the roof panel It has the effect that it can be done.

(2) The roof trim mounting structure according to the present invention has a structure in which spring flanges elastically provided on the roof panel surface are formed in at least two places of the bracket, so that dimensional errors of the roof trim and the bracket can be reduced. The installation error of the roof trim can be absorbed by the elasticity of the spring flange, and the roof trim can be securely and smoothly mounted.

[Brief description of the drawings]

FIG. 1 is an overall view showing a first embodiment of a roof trim mounting structure according to the present invention.

FIG. 2 is a perspective view of a bracket used in the first embodiment of the roof trim mounting structure according to the present invention.

FIG. 3 is a sectional view showing a first embodiment of a roof trim mounting structure according to the present invention.

FIG. 4 is a perspective view showing another embodiment of the bracket used for the roof trim mounting structure according to the present invention.

FIG. 5 is a perspective view showing another embodiment of the bracket used for the roof trim mounting structure according to the present invention.

FIG. 6 is a perspective view showing another embodiment of the bracket used for the roof trim mounting structure according to the present invention.

FIG. 7 is an overall view showing a conventional roof trim mounting structure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Roof trim 11 Core material 12 Skin material 20 Bracket 21 Clip seat 22 Spring flange 25 Projection 40 Clip 50 Roof panel

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-59-121213 (JP, A) JP-A-7-179154 (JP, A) JP-A 62-112637 (JP, U) JP-A-6-112637 35050 (JP, U) Japanese Utility Model 62-106853 (JP, U) Japanese Utility Model Application Hei 5-64001 (JP, U) Japanese Utility Model Application Utility Model Hei 6-988 (JP, U) (58) Fields surveyed (Int. ⁷ , DB name) B60R 13/02

Claims (4)

(57) [Claims] A bracket fixed to a predetermined position on the back surface of a core material (11) of a roof trim (10) having a skin material (12) adhered to the surface of the core material (11) via a hot melt (30). Insert the clip (40) into the (20), and insert the clip (40) into the mounting hole (51) of the roof panel (50).
In the roof trim mounting structure for mounting the roof trim (10) to the roof panel (50) by fitting into the inside, at least two places of the bracket (20) are resiliently mounted on the roof panel (50) surface. A roof trim, wherein a sliding resistance between the flange (20) and the roof panel (50) is reduced by elasticity of the spring flange (22). Mounting structure. 2. The roof trim mounting structure according to claim 1, wherein the spring flange is in line contact with the roof panel along the front-rear direction. 3. The roof trim according to claim 1, wherein the spring flange has a projection formed in line contact with the roof panel along the front-rear direction. Mounting structure. 4. The roof trim mounting structure according to claim 1, wherein the spring flanges (22) are set at respective corners of the bracket (20).