JPS58177744A - Roof structure for car - Google Patents

Abstract

PURPOSE:To ensure head clearance and improve the surface rigidity of a roof panel by connecting a molded ceiling to the roof panel using a magic fastner. CONSTITUTION:An adhesive agent layer 12 provided on each one support body 11a is bonded at the front and rear parts on the lower surface of a roof panel 1, respectively, and one side of each magic fastner 11 is attached. On the other hand, the adhesive agent layer 12 provided on the other support body 11a is bonded at the front and rear parts on the upper surface of the molded ceiling 2, respectively, and the other side of each magic fastner 11 is attached. As a result, the sections other than the outer edge and the central part of the molded ceiling 2 for example, the peripheral section around the central part of the molded ceiling 2 are also connected to the roof panel 1. The peripheral section is prevented from being hung by its dead weight and surface rigidity of the roof panel 1 is also improved. Besides, the oscillation of the roof panel 1 and the noise following this oscillation generated when a car travels at a high speed is absorbed by the adhesive agent 12 made of viscous and elastic resin.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a roof structure for a vehicle such as an automobile, in which a molded ceiling is attached to a flannel.

2. Description of the Related Art Conventional vehicle roof structures include those shown in FIGS. 1 and 2, for example.

In the figure, reference numeral 1 indicates a roof wall, and the roof wall 1 is usually formed of a steel plate having a thickness of 0.7 to 1.0. 2 is a molded ceiling stretched below the roof panel 1, and the molded ceiling 2 is formed from a core material layer 21 such as cardboard, a foamed urethane layer 2b, and a vinyl chloride sheet 2c.

The outer peripheral edge of the molded ceiling 2 #'i is held by a welted garnish 3 on a roof rail 4 and stretched below the roof panel 1. In front, a roof bow 5 is provided on the roof rail 4, and the center part of the molded ceiling 2 is fixed to the roof bow 5 with a room lamp mounting bracket 6 installed in a lamp mounting hole 5a formed in the center part of the roof rail 4. It is worn. 7 is a lamp cover that covers the room lamp heavy fitting 6.

In this way, the molded ceiling 2 is stretched below the roof panel 1.

However, in such a conventional vehicle roof structure, the molded ceiling 2 is stretched below the roof panel l.
has a structure in which its outer peripheral edge is clamped to the roof rail 4 by a welted garnish 3, and its center part is fixed to the roof bow 5 by a room lamp mounting bracket A6, and is held on the roof rail 4 via the roof bow 5. Therefore, after a long period of time has passed since the molded ceiling 2 was installed below the roof panel 1, the unsupported central portion of the molded ceiling 2 may sag due to its own weight. There was a problem in that the required head clearance between the head of a seated occupant and the molded ceiling 2 could not be secured.

This invention was made by focusing on such conventional problems, and it solves the above problems by connecting a molded ceiling to a roof panel with a Magic 7 assener having an adhesive layer on the outside. It aims to solve the problem.

The present invention will be explained below based on the drawings.

FIG. 3 and FIG. 5 are diagrams showing an embodiment of the present invention.

First, to explain the configuration, in the figure, the symbol l is the roof panel;
Magic fastener 11 with lla magic fastener
An adhesive layer 12 made of butyl rubber, which is a viscoelastic resin, is formed on the outside.

The magic fastener 11 has two rectangular supports 11a and VC hooking members 11 that are hooked onto each other.
The adhesive layer 12 is provided on the outer surface of each support body 11m where the hooking member 11b is not implanted.

Each magic fastener 11 is bonded with an adhesive layer 12 provided on one support 11m having hooking members 11b implanted in the front and rear parts of the lower surface of the roof panel 1, respectively.
one side is attached. In addition, an adhesive layer 12 provided on another support 111 having a hooking member 11b implanted therein is adhered to the front and rear parts of the upper surface of the molded ceiling 2 similar to the conventional example, so that each magic Fastener 11
The other one is attached.

Then, one hooking member 11b of the magic fastener 11 attached to the lower surface of the roof panel l and the other hooking member 11b of the magic fastener 11 attached to the upper surface of the molded ceiling 2 are engaged with each other, and the roof A panel IK molded ceiling 2 is connected. Normally, there is a clearance of about 2 to 10 m between the roof panel 1 and the molded ceiling 2 at the portions that are not connected by the fasteners 11.

Next, the effect will be explained.

First, one side of each magic fastener 11 is attached by adhering an adhesive layer 2 provided on one support 11 to the front and rear parts of the lower surface of the roof panel 1, respectively.

On the other hand, adhesive layers 12 are provided on the front and rear parts of the upper surface of the molded ceiling 2, respectively, on another support 11m.
and attach the other side of each magic fastener 11.

Next, as in the conventional example, the outer peripheral edge of the molded ceiling 2 is held between the roof rail 4 by the welted garniture 3, and the center part of the molded ceiling 2 is fixed to the roof bow 5' by the room lamp mounting bracket 6. wear it. At this time, the hooking member 11b planted on the support body 11m, which is one side of the magic fastener 11 attached to the molded ceiling 2, is attached to the roof panel 1.
The support member 11a K, which is the other side of the roof panel 1, is pressed and engaged with the hooking member 11b, which is the other side of the roof panel 1, and the molded ceiling 2 is attached to the magic fastener 11 and the adhesive layer 12.
connected via. Therefore, parts other than the outer peripheral edge and the center part of the molded ceiling 2, for example, the peripheral part of the central part of the molded ceiling 2, are also connected to the roof panel 1, and the peripheral part does not sag due to its own weight, and the rigidity of the roof panel 10 is increased. has also improved.

9. The vibration of the roof panel 1 during high-speed driving and the vibration noise accompanying the vibration are made of a viscoelastic resin, and the adhesive layer 1
2 is absorbed and attenuated.

In this embodiment, two nine-magic fasteners 11 each having an adhesive layer 12 are used, but one may also be used.
Of course, two or more may be used.

Further, although the adhesive layer 12 is formed of butyl rubber,
Of course, the viscoelastic resin is not limited to butyl rubber, and its thickness can be set to any desired thickness depending on the material.

As described above, 1. According to the present invention, the structure is such that the molded ceiling is connected to the roof panel with a magic fastener having an adhesive layer on the outside, and the outer peripheral edge and central portion of the molded ceiling are Since the other parts are connected using magic fasteners with an adhesive layer, there is no possibility that the molded ceiling stretched below the roof panel will sag over a long period of time, unlike conventional methods. Therefore, it is possible to secure the required head clearance, and the adhesive layer is provided on the roof panel, resulting in the effect that the surface rigidity of the roof panel is improved.

In addition, since the adhesive layer is made of viscoelastic resin, the adhesive layer absorbs, attenuates, and prevents the vibrations of the roof panel that occur during high-speed driving and the vibration noise that accompanies the vibrations. It will be done. Since the generation of vibration and vibration noise in the roof panel is prevented in this way, there is no need to go to the trouble of attaching vibration damping and soundproofing materials, which are separate parts, to the roof panel, thereby reducing the number of parts and assembly steps. This also has the effect of reducing costs.

[Brief explanation of drawings]

FIG. 1 is an exploded perspective view of a conventional vehicle roof structure showing a roof panel and a molded ceiling, FIG. 2 is a partial cross-sectional view of the same vehicle roof structure, and FIG. 3 is an embodiment of the present invention. 4 is a sectional view showing the vehicle roof structure, and FIG. 5 is a perspective view showing the vehicle roof structure in an exploded state.
It is a partially enlarged sectional view of the figure. 1... Roof panel, 2... Molded ceiling, 11...
Magic fastener, 12...adhesive layer. Applicant Nissan Motor Co., Ltd. Figure 2 Figure 4 Figure 514 0

Claims (2)

[Claims] (1) A single-panel roof structure characterized by a roof panel with a molded ceiling and an adhesive layer on the outside and connected with nine magic fasteners. (2) The vehicle roof structure according to claim 1, wherein the adhesive layer is formed of a viscoelastic resin.