JPH0129957B2 - - Google Patents

Description

Detailed Description of the Invention This invention relates to a curved window frame to which a curved window glass is attached, which is used in a building, a corner of a store, etc. The present invention relates to a method for manufacturing a member.

More specifically, as shown in FIG. 3, among these window frame members, the cross section consists of a horizontal piece 1a that is curved in a rounded shape when viewed from above, and vertical pieces 1b and 1c that are integrally hung down from both ends of the horizontal piece 1a. This invention relates to a generally U-shaped curved window frame member 1, and relates to a method of manufacturing a draining member 1 which is fixed to the outdoor side of a lower frame 3 supporting a curved glass 2 with screws 4, for example.

In manufacturing such a curved window frame member 1 having a substantially U-shaped cross section, conventionally, as shown in FIG. , and both vertical pieces 1b and 1c are formed which are curved along both ends of the horizontal piece 1a separately from the horizontal piece 1a, and the abutting corners of the two are connected to welding means 5a and 5b. Therefore, the required curved window frame member 1 is manufactured by integrally connecting them and polishing these welded parts. However, in this manufacturing method, the horizontal piece 1a must be cut out to the required curvature from a suitable flat plate, and furthermore, the horizontal piece 1a and both vertical pieces 1b and 1c must be welded and polished. However, there is a drawback that the manufacturing cost is extremely high. In order to solve this problem, as shown in Fig. 4b, a shaped material having a substantially U-shaped cross section is made up of a horizontal piece 1'a and both vertical pieces 1'b and 1'c hanging from both ends of the horizontal piece 1'a. The curved window frame member 1 is manufactured by manufacturing a curved window frame member 1' and forcibly bending it to a required curvature in plan view using a bender. During operation, compressive stress is applied to the vertical piece 1'c located on the inner side of the curve in contact with the bender, and this compressive stress causes the base end 1'ca of the vertical piece 1'c to become a horizontal piece. 1'a, but since the free end 1'cb is free, the free end 1'cb is distorted toward the outer periphery as shown by the dashed line in the figure due to the action of the compressive stress. , tensile stress is applied to the vertical piece 1'b located on the curved outer circumferential side, and this tensile stress causes the base end 1'ba of the vertical piece 1'b to move to the horizontal piece 1'a. Although it is supported, the free end 1'bb is free, so due to the action of the above-mentioned tensile stress, the free end 1'bb is distorted toward the inner periphery as shown by the dashed line in the figure. Both vertical pieces 1'b, 1'c
Since the window frame members were not accurately hung perpendicularly to the horizontal piece portion 1'a, many defective products were produced, and window frame members with the desired cross-sectional shape could not be manufactured.

This invention eliminates the above-mentioned difficulties and makes it possible to manufacture a curved window frame member with an accurate cross-sectional shape at low cost.An embodiment of this invention is shown in FIGS. 1 and 2 below. To explain this, first, as shown in FIG. 1, there is a connection between an upper horizontal piece 10a, an opposing lower horizontal piece 10b, and the left side vertical piece 10c, which connects the left side edges of both horizontal pieces, and the right side edge. It is an extruded aluminum alloy material having a hollow cross-section and a substantially rectangular shape, consisting of a right-side vertical piece 10d that connects the A shape member 10 provided in line symmetry is manufactured. At this time, the upper and lower horizontal pieces 10a, 10b and the vertical piece 10d on the curved inner peripheral surface side are provided with screw pockets 1 for fixing screws to other window frame members connected perpendicularly thereto.
1 is preferably formed integrally for the reasons described below. Next, the above-mentioned molded material 10 is curved into a radius shape to a required curvature in plan view using a roll bender, and then both the above-mentioned vertical pieces 10c and 10d are cut using a cutting tool along the center line O of the opposing gap. By cutting, as shown in FIG. 2, the horizontal piece 12a is curved in a rounded shape in plan view, and the vertical pieces 12b and 12c are integrally hung from both ends of the horizontal piece. A pair of window frame members 12 having a substantially U-shaped cross section, for example, a draining member, are manufactured. According to the present invention, the upper horizontal piece 10a, the lower horizontal piece 10b opposing the upper horizontal piece 10a, and the left and right vertical pieces 10c, 1 that connect the opposite ends of both horizontal pieces.
When bending the hollow shaped material 10 with a substantially rectangular cross section consisting of Both vertical pieces 10d and 10c are supported at their upper and lower ends by the upper and lower horizontal pieces 10a and 10b, respectively, so that due to the supporting force of these pieces, there is almost no distortion and deformation against the above-mentioned stress. Vertical piece 10d, 1
The vertical state of 0c can be maintained accurately.
At this time, as mentioned above, each piece has 1 bis pocket.
1, these bis pockets 11 function as a kind of reinforcing rib, thereby further suppressing the occurrence of distortion.

Moreover, since at least the upper horizontal piece 10a and the lower horizontal piece 10b of the molded material 10 are provided line-symmetrically with respect to the center line O of the opposing gap, the molded material 10 can be moved along the center line O. By cutting both the vertical pieces 10c and 10d, a pair of window frame members 12 having an accurate substantially U-shaped cross section can be manufactured at the same time.

Therefore, according to the present invention, the horizontal piece 12a is curved in a rounded shape in plan view, and both vertical pieces 12b are integrally connected in a vertical manner from both ends of the horizontal piece.
12c, the window frame member 12 having a generally U-shaped cross section can be manufactured at low cost and in an accurate shape.

[Brief explanation of drawings]

FIGS. 1 and 2 are a front view and a perspective view, respectively, showing the manufacturing process of an embodiment of the present invention. Figure 3 is a perspective view showing the state of use of the conventional example, Figure 4a
and FIG. 4b are perspective views showing conventional examples. 10... Shape material, 10a... Upper horizontal piece, 10
b...Lower horizontal piece, 10c...Left vertical piece,
10d...Right side vertical piece, O...Opposing gap center line, 11...Bis pocket, 12...Window frame member,
12a...Horizontal piece part, 12b, 12c...Vertical piece part.

Claims (1)

[Scope of Claims] 1. Consists of an upper horizontal piece, a lower horizontal piece opposite thereto, a left vertical piece that connects the left edges of both horizontal pieces, and a right vertical piece that connects the right edges of both horizontal pieces. First, a hollow shaped material having a substantially rectangular cross section, in which at least an upper horizontal part and a lower horizontal part are provided line-symmetrically with respect to the center line of the opposing gap, is first bent into a rounded shape in plan view. Then, by cutting both the vertical pieces along the center line of the facing gap, the horizontal piece curved in a rounded shape in plan view and the horizontal piece are integrally hung from both ends of the horizontal piece. A method for manufacturing a curved window frame member, which comprises forming a pair of window frame members each having a substantially U-shaped cross section and consisting of both vertical pieces. 2. The method of manufacturing a curved window frame member according to claim 1, wherein a bis pocket is integrally formed in each or any of the parts.