JPS6323262Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a reinforcing device that is installed inside the outer skin of an automobile to strengthen the tension and rigidity of the outer skin.

It is desirable that the outer panels of automobiles be made thinner to reduce weight. When the outer panel is made thinner, the strength is sufficient depending on the material used for the outer panel, but there is a problem of insufficient tensile rigidity. Tension rigidity is particularly insufficient in the outer skin portion, which is flat or has a small curvature.

Therefore, the present invention fixes at least two fasteners spaced apart on the inner surface of the outer panel, which is flat or has a small curvature and lacks tensile rigidity, and applies tension between these fasteners. The tensile rigidity of the outer panel is strengthened by stretching a wire rod with high strength.

Hereinafter, an embodiment in which the present invention is applied to an automobile door outer panel will be described with reference to the drawings.

In the figure, 1 is an outer panel of the door, 2 is an inner panel of the door, and 3 is a door glass. The door glass 3 is installed in a gap formed between the outer panel 1 and the inner panel 2 so as to be able to go in and out. The door outer panel 1 forms a gently curved surface that projects outward.

On the inner surface of the door outer panel 1, there are three pairs of metal fasteners 4a, 4b, 4 facing each other at intervals in the vertical direction.
c is fixed by projection welding. As shown in FIG. 3, each fastener has a foot portion 41 for widening the welding area, and is firmly fixed to the door outer panel 1 by the foot portion 41. Each fastener has a through hole 42 at its top,
Piano wires 5a, 5b, 5c are tensioned between the vertically opposing fasteners 4a, 4b, 4c, with both ends fixed to the through holes 42 of each fastener. . That is, each piano wire 5a, 5
Both ends of b and 5c are inserted through the through hole 42 of each fastener, folded back, and fixed by a collar 51.

Each of the piano wires 5a, 5b, 5c does not come into contact with the inner surface of the door outer panel 1, and a gap is maintained.

In the door outer panel 1 configured as described above, when a load is applied from the outside, the piano wires 5a, 5b, 5
The tension of c increases and acts to resist the load, thereby strengthening the tension rigidity of the door outer panel 1.

The present invention can also be applied to strengthen the tensile rigidity of flat skin panels. In this case as well, the piano wire needs to be stretched while maintaining a predetermined gap from the inner surface of the outer panel so that it does not come into contact with the outer panel when a load is applied to the outer panel from the outside and the outer panel is deformed.

Note that the wire rod is not limited to piano wire, and other wire rods with high tensile strength can be used. The fastener should preferably have a wide foot as long as it does not damage the surface shape of the outer panel during welding. Alternatively, a synthetic resin fastener may be used and adhered to the inner surface of the outer panel. The means for fixing the wire to the fastener is not limited to the above embodiments, and any suitable means used for this type of fixation can be used. In addition, in the case where the wire rod generates vibration noise, the vibration noise can be prevented by interposing a vibration-proofing spacer such as urethane in a part of the gap between the wire rod and the outer plate.

However, according to the present invention, it is possible to make the outer panel of the automobile thinner and lighter, and at the same time,
Since reinforcing devices can be appropriately installed only at locations on the outer panel that require reinforcement of tension and rigidity, extremely efficient reinforcement can be achieved. Furthermore, since the fastener is fixed to a small portion of the outer panel, the surface shape of the outer panel will not be damaged by fixing the fastener. In this way, the present invention can simultaneously reduce the weight of the outer panel and increase its tensile rigidity using extremely simple means.

[Brief explanation of drawings]

Fig. 1 is a schematic side view of an automobile door equipped with the reinforcing device of the present invention, Fig. 2 is a sectional view taken along line A-A in Fig. 1, and Fig. 3 is a perspective view of a fastener that fixes a piano wire. It is. 1... Door outer plate, 2... Door inner plate, 3... Door glass, 4a, 4b, 4c... Fastener, 5a, 5
b, 5c...Piano wire.

Claims (1)

[Scope of utility model registration request] At least two fasteners are fixed at intervals to the inner surface of a flat or small-curvature outer skin, and a wire with high tensile strength is inserted between the fasteners with a gap between them and the inner surface of the outer skin. A reinforcing device for an automobile outer panel, characterized in that it is held and stretched in a tensioned state.