JPH11180154A - Anti-vibration panels and automotive sunshades - Google Patents

Abstract

(57) [Problem] To provide a hollow panel material excellent in vibration resistance and sound insulation using a hollow panel material such as an aluminum roll bond panel, and a sunshade for a sunroof of an automobile using the hollow panel material. SOLUTION: This is a vibration isolating panel in which a gel-like vibration isolating agent is filled and sealed in a hollow panel material in which two or three metal plates each having a hollow portion are laminated. In the anti-vibration panel material of the present invention, the metal plate is preferably made of aluminum, and the gel anti-vibration agent is preferably a cross-linkable polymer that has absorbed ethylene glycol-containing water. The present invention also provides an automotive sunshade using these vibration-proof panels.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an anti-vibration panel made of a hollow panel material having excellent anti-vibration properties and a sunshade for an automobile using the anti-vibration panel.

[0002]

2. Description of the Related Art Conventionally, sunshades for sunroofs of automobiles, insulators of automobiles (sound insulation, heat insulation plates), and bed panels of constant temperature storage are roughly classified into plastic and aluminum or aluminum alloy (hereinafter simply referred to as aluminum). There is a metal thing such as a plate and a steel plate.

[0003]

The sunshade for metal sunroof can be made thinner, but depending on the design shape, generates a vibration sound when the sunshade is strongly closed or when the door is strongly closed. There is. In particular, in the case of using a metal panel material, the hitting sound is hard to hear and unpleasant peculiar to metal. In contrast, conventional sunshades have dealt with this by attaching a damping material to the panel material. In addition, even when a plastic sunshade is used, the above-described vibration damping material is adhered to a plastic panel material to control the vibration. However, it is not possible to completely prevent the vibration noise when the sunshade or the automobile door is strongly closed, and the generation of the vibration noise has been left as it is to some extent.

[0004] On the other hand, aluminum hollow panel materials, particularly aluminum roll bond panel materials, are used as materials for sunshades for sunroofs of automobiles, insulators (sound insulation, heat insulation plates) of automobiles, or bed panels of constant temperature storages. These hollow panels have high surface stiffness, so they have an advantage over vibrations compared to mere metal, but have no improvement over tapping compared to single metal plates. Met. Therefore, the present inventors aimed to provide a hollow panel material having excellent vibration resistance and sound insulation using a hollow panel material such as an aluminum roll bond panel, and a sunshade for an automobile sunroof using the same. As a result, the present invention has been accomplished.

[0005]

In other words, the present invention relates to a vibration isolating device comprising a hollow panel material in which two or three metal plates having a hollow portion are laminated, and wherein the hollow portion is filled with a gel-like vibration isolator. A panel that achieves the above object. In the anti-vibration panel material of the present invention, the metal plate is preferably made of aluminum, and the gel anti-vibration agent is preferably a crosslinkable polymer that has absorbed ethylene glycol-containing water. The present invention also provides an automotive sunshade using these vibration-proof panels.

[0006]

1 shows an embodiment of a sunshade for an automobile according to the present invention, in which (a) is a perspective explanatory view and (b) is a sectional view taken along line AA of (a). FIG. In FIG. 1, reference numeral 1 denotes an automotive sunshade formed of a vibration-damping panel made of an aluminum hollow panel material.

As the hollow panel material to be molded, a panel composed of two or three plate materials and having a hollow portion inside the plate material as shown in FIGS. 2A to 2C is used. Here, the single-sided inflatable tube roll bond panel shown in FIG. 2A is manufactured by a known means. That is, the two aluminum plates remove harmful oils and fats, dirt, and oxide films on the plate surfaces to expose fresh surfaces. Then, an anti-compression agent is applied to at least one surface of the aluminum plate in a predetermined pattern according to a portion where the reinforcing rib is to be formed. In general, an ink containing 1 μm or less of colloidal graphite as a main component is used as the anti-compression agent, and its application is usually performed by printing means. Next, the two aluminum plates are placed one on top of the other with the application surface of the anti-pressure-bonding agent inside, and hot-rolled by a rolling roll under conditions where good pressure-bonding strength is obtained. Firmly press-integrate. Then, if necessary, after performing cold rolling and annealing, a pressure fluid such as compressed air is introduced from one peripheral portion to the non-press-bonded portion where the anti-pressing agent is interposed, and the pattern portion is expanded. To produce a roll bond panel having a hollow inside. The above-mentioned inflated tube does not bulge on the plate surface on the outer surface side of the panel,
A reinforcing rib having a predetermined height and a cross-sectional shape is formed by inflating only one inner surface. That is, the process is performed using a one-sided inflatable tube technique. In the production of the roll bond panel, in order to perform the one-sided inflatable tube while maintaining good flatness on the other side, the aluminum plate used on the outer side includes:
It is preferable to use an aluminum alloy of a heat treatment type.

The double-sided inflatable roll bond panel shown in FIG. 2B is formed by using two plate members and inflating the pattern portion on both the front and back surfaces of the plate member in the same manner as described above. Further, the double-sided flat plate three-layer roll bond panel shown in FIG. 2 (c) is formed by alternately forming a pattern on the front and back of the middle plate material among the three plate materials, and consequently, the both outer surfaces are formed in a flat plate shape. Further, in the present invention, two metal plates may be overlapped, and these may be seam pressed,
In short, any shape may be used as long as a hollow portion is formed by laminating two or three metal plates. The shape of the pattern circuit portion of these hollow panels is not particularly specified.

As the metal material used for the hollow panel material as the vibration isolating panel in the present invention, copper, aluminum, or the like can be used. When an aluminum material is used, the hardness of the hollow panel is O material or half. It shall be hard. Hereinafter, the present invention will be described with respect to a hollow panel made of aluminum, but it is needless to say that a copper panel may be used. It should be noted that the base plate of the hollow panel in the present invention may be a large number.

In a hollow panel material 2 as shown in FIG. 2, a gel material 4 is filled and sealed in a hollow portion 3 (an expanded tube portion in a roll bond panel). As the gel material 4, a water-absorbent resin and moisture are sealed together, and the water-absorbent resin takes in moisture in the hollow portion 3 and crosslinks to form a gel. Therefore, moisture that crosslinks the water-absorbing resin does not corrode the metal plate forming the hollow panel material 2 and further prevents freezing, specifically, ethylene glycol (EG)
/ H ₂ O 5O · 5O is used. Further, the water-absorbing resin preferably absorbs alcohol. The filling and enclosing of the gel material 4 may be performed in the entire hollow portion 3 of the hollow panel material 2 or a part thereof, for example, FIG.
In such a three-layer roll bond panel material, it may be applied to one hollow circuit.

The gel material 4 filled and sealed in the hollow portion 3 (expanded tube portion) of the hollow panel material 2 is turned into a gel by the water-absorbing resin absorbing ethylene glycol in the hollow portion 3. As a result, the natural frequency peculiar to the metal material can be greatly changed, and the striking sound and the vibration sound can be remarkably reduced.

In the embodiment of the sunshade for an automobile sunroof shown in FIG. 1, the sunshade has a two-dimensional curved surface whose central portion corresponds to the shape of the automobile roof. The aluminum sunshade 1 having such a two-dimensional curved surface has an X-axis in the vehicle length direction and a Y-axis in the width direction.
When it is set in the axial direction, the curved surface is formed in the X-axis direction and the Y-axis direction. These hollow panel members are formed, for example, by twin rolls composed of rigid / elastic rolls in the circumferential direction of the rolls (Y
-Y axis) and then press-forming or roll-forming to bend the side edges of the hollow panel, or pressing a metal hollow panel by press-forming or roll-forming to form a side edge of the hollow panel. After the edge bending process, it is obtained by bending in the circumferential direction (Y-Y axis) of the roll with a twin roll composed of a rigid / elastic roll. In addition, by using a crown roll having a curvature on the roll forming surface during the roll processing, it is possible to bend not only in the circumferential direction of the roll (Y-Y axis) but also in the axial direction of the roll (XX axis). A hollow panel material having a three-dimensionally bent central portion can be obtained, and can be easily processed into an automobile sunshade.

In order to form the automotive sunshade 1 from the hollow panel material 2, the hollow panel material 2 in which the gel material 4 is filled and sealed in the hollow portion 3 is subjected to edge bending. The edge bending process comprises bending both side edges of the hollow panel material 2 into a concave or U-shaped cross section as shown in FIG. 1 by press working or roll forming. By forming the hollow panel material into a shape having an emboss effect by these edge bending processes, it is possible to obtain the automotive sunshade 1.

If a hollow panel material 2 provided with a coating material before roll processing is used, an automobile sunshade provided with the coating material can be obtained. Examples of these coating materials include nonwoven fabrics such as spunbond of polyester material, coating with water-soluble acrylic paint, resin films such as polyester films, flocking of fibers of polyester and the like, chemical conversion coatings, and colored alumite. These coating materials are preferably black or dark.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Aluminum (material: A105) expanded to a cross-sectional shape shown in FIG.
0) In the hollow portion 3 of the roll bond, a crosslinkable polymer (trade name: PNVA NA-010) (trade name: PNVA NA-010) (poly N-
Vinylacetamide) was filled and sealed in 200 cc with water having a ratio of ethylene glycol to water of 50/50, and solidified by a crosslinking reaction in the hollow portion. The natural frequency of the obtained hollow panel material 2 is greatly reduced after the gel material 4 is sealed in the hollow portion as compared with that before the gel material 4 is sealed, and the obtained vibration damping panel has significantly improved vibration damping properties. Also, the sound insulation and the heat retention were improved. Further, when the automobile sunshade 1 as shown in FIG. 1 is formed using the hollow panel material thus obtained, unpleasant noise when opening and closing the sunshade or opening and closing the door is greatly reduced. there were. Further, since the water added to the crosslinkable polymer contains alcohol, corrosion of the aluminum material can be prevented, and breakage of the panel due to freezing can be avoided.

[0016]

As described above, according to the present invention, it is possible to obtain a hollow panel material having excellent vibration damping properties, and excellent sound insulation properties and heat insulation properties. Vibration noise (hitting sound) at the time of opening and closing or opening and closing of the door can be reduced.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing an automotive light-shielding panel according to the present invention, in which (a) is a perspective view and (b) is an A-A sectional explanatory view of (a).

FIG. 2 shows a single-sided expanded roll bond panel (a) and a double-sided expanded roll bond panel as hollow panels applicable to the present invention.
(b) is an explanatory sectional view showing a double-sided flat plate three-layer roll bond panel (c).

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Aluminum sunshade 2 Hollow material 3 Hollow part 4 Gel material

Claims (4)

[Claims] An anti-vibration panel comprising a hollow panel material formed by laminating two or three metal plates having a hollow portion, wherein the hollow portion is filled with a gel-type anti-vibration agent. 2. The anti-vibration panel according to claim 1, wherein the metal plate is made of aluminum or an aluminum alloy. 3. The anti-vibration panel according to claim 1, wherein the gel anti-vibration agent is a cross-linkable polymer that has absorbed ethylene glycol-containing water. 4. An automotive sunshade using the vibration isolating panel according to claim 1.