JPH0627488U - Structure of thin aluminum plate - Google Patents

Abstract

(57) [Summary] [Purpose] To provide an aluminum thin plate material capable of preventing blistering and angular deformation that occur during welding of an aluminum thin plate material. [Structure] An aluminum thin plate material integrally formed with semi-cylindrical aggregates that open outward on both sides of the back surface.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a structure of an aluminum sheet material suitable for constructing a small boat such as a yacht or a boat.

[0002]

[Prior art]

 Many small boats such as yachts and boats have been built due to the increased activity of marine leisure. Although many FRPs are used in this small boat, there is a growing concern over the construction of small boats using thin aluminum plates due to the recent problems of disposal after their useful life.

In the construction of a small boat using such an aluminum thin plate, an aggregate of a longe or stringer may be welded by fillet welding to an aluminum plate that has been cut or bent into a predetermined shape in advance. Has been done.

[0004]

[Problems to be solved by the device]

 By the way, in order to reduce the weight of such a small boat using aluminum, for example, when an aluminum thin plate material having a plate thickness of 2 to 6 mm is used, welding distortion occurs when the aggregate is welded to the aluminum thin plate material. . That is, as shown in FIG. 9, when a welding beat 3 is applied to an aluminum thin plate material 1 by a fillet welding of an aggregate 2 such as a longe or a stringer, an angular deformation θ occurs in the aluminum thin plate material 1 due to welding distortion. Not only is there a bulge, but also a bulge 4 is formed on the back surface of the welding beat 3. Such angular deformation θ and the bulge 4 have a problem that the appearance is deteriorated and the propulsion efficiency is reduced.

[0005]

[Means for Solving the Problems]

 The present invention was made in order to solve the above-mentioned problems when welding the conventional AMIL thin plate material when welding, and semi-cylindrical aggregates are opened to the outside on both sides of the back surface and integrated. The structure of the formed aluminum thin plate material is provided. The semi-cylindrical aggregate is most preferably in the shape of a cylinder cut in half, but is not limited to this, and may be in the shape of an oval, a square cut in half, or a triangle cut in half. In addition, a cross-sectional shape that forms a tubular body when combined is adopted.

[0006]

[Work]

 At least two aluminum thin plate members are arranged in a flat line, and the semi-cylindrical aggregates integrally formed by opening to the outside are welded by MIG welding or the like to form a cylindrical aggregate. It In this case, the tubular aggregates are welded together. That is, since the aluminum thin plate material is welded with a gap, the outer surface deformation due to welding distortion can be minimized.

[0007]

【Example】

 An embodiment of the structure of an aluminum thin plate material (hereinafter simply referred to as a thin plate material) according to the present invention will be described below with reference to FIGS. 1 to 8. In FIG. 1, 11 is a first thin plate material and 12 is a second thin plate material. The first thin plate material 11 and the second thin plate material 12 are formed by extrusion processing or the like, and both sides thereof have a semi-cylindrical shape. The aggregates 13 and 14 are formed so as to open to the outside. Then, the first thin plate member 11 and the second thin plate member 12 are first assembled in a state where the semi-cylindrical aggregates 13 and 14 are aligned so as to have a cylindrical shape as shown in FIG. A tubular aggregate 16 is formed by welding with a welding torch 15 such as the above. Then, as shown in FIGS. 3 and 4, the first thin plate member 11 and the second thin plate member 12 are welded by the welding torch 15 after being inverted. At this time, argon gas or the like is enclosed in the tubular aggregate 16 to control the back pressure so that the tubular aggregate 16 is not deformed.

In this way, the aluminum block 17 is formed, and after the aluminum block 17 is bent as required, the long block 18 is welded to the tubular aggregate 16 and the aluminum block 17 is bonded to other blocks. Joined together, a small boat 19 as shown in FIGS. 5 and 6 is constructed. FIG. 7 shows another embodiment of the thin plate member 20. Semi-cylindrical aggregates 21 and 22 are provided on both sides of the thin plate member 20, and the cylindrical aggregate 2 is provided at a predetermined interval. 3 is provided.

FIG. 8 shows still another embodiment of the thin plate member 24. Semi-cylindrical aggregates 25 and 26 are provided on both sides of the thin plate member 24, and a predetermined interval is provided therebetween. The tubular aggregate 27 is formed by bending.

[0010]

[Effect of device]

 Since the aluminum thin plate material according to the present invention is formed by opening the semi-cylindrical aggregates on both sides of the back surface to the outside, the semi-cylindrical aggregates at the ends of the aluminum thin plate material are welded together to form a cylindrical shape. Since the aggregate is used, the welding heat is not transmitted to the outer surface of the aluminum thin plate material in this case, and as a result, the outer surface deformation due to welding distortion can be prevented, the appearance is good and the propulsion efficiency is not reduced. The effect is that you can build a boat.

[Brief description of drawings]

FIG. 1 is a perspective view of an aluminum thin plate material according to the present invention.

FIG. 2 is an explanatory diagram of a welding process of an aluminum block.

FIG. 3 is an explanatory diagram of a welding process of an aluminum block.

FIG. 4 is an enlarged view of a portion A of FIG.

FIG. 5 is a perspective view of an aluminum boat.

6 is a sectional view taken along line BB of FIG.

FIG. 7 is a side view of an aluminum thin plate material of another embodiment.

FIG. 8 is a side view of an aluminum thin plate material of another embodiment.

FIG. 9 is an explanatory view of a deformed state when an aggregate is welded to an aluminum thin plate material.

[Explanation of symbols]

1, 20, 24 Aluminum thin plate material 2 Aggregate material 3
Weld bead 4 Bulge 11 First thin plate material 12 Second thin plate material 13, 14, 21, 22, 25, 26 Semi-cylindrical aggregate 16, 23, 27 Cylindrical aggregate 17 Aluminum block 18 Longe 19 Small boat.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Takeshi Nojiri Takeshi Nojiri 5-6-4 Tsukiji, Chuo-ku, Tokyo Mitsui Engineering & Ships Co., Ltd. (72) Kenji Koshino 1 Toyota Town, Toyota City, Aichi Prefecture Toyota Motor Corporation In the company

Claims (1)

[Scope of utility model registration request] 1. A structure of an aluminum thin plate material, characterized in that semi-cylindrical aggregates having an outer opening are integrally formed on both sides of a back surface.