JPS581591Y2 - Arc-shaped Venetian blinds - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a new type of venetian blind.

For example, a curved window installed in a building is preferably provided with a venetian blind that opens and closes along an arcuate path parallel to the surface of the window.

Generally, Venetian blinds are configured to lower the blind using the weight of the bottom rail provided under the slats arranged horizontally at regular intervals above and below, but as shown above, the blinds are lowered in an arc shape. Even if you try to open or close the blind along a curved path, when the blind is in the open position, i.e., all the slats are above the curved path, the slats contact the lifting cord flatly, causing the slats and the lifting cord to overlap. The weight of the bottom rail does not cause the slats to lower because of the large friction between them which creates a large resistance to lowering.

In this case, the function as a venetian blind will be lost.

For this reason, Venetian bunds that open and close along curved passageways have not been built in the past.

The present invention aims to provide an arc-shaped Venetian blind that can be smoothly opened and closed along a path that curves downward in an arc shape from a nearly horizontal position. A downwardly curved guide frame is placed on both sides, a head box is fixed horizontally between the tops of these guide frames, and support cords hanging from the head box are used to horizontally space the guide frames vertically at equal intervals. A large number of supported slats and both ends of the bottom rail attached to the lower end of the support cord are arranged so as to be guided by the above-mentioned guide frame, and the lifting cord that opens and closes the blind extends downward from the head box to each slat. A portion of the outer edge of each slat protrudes downward to prevent the slat from flatly contacting the lifting cord and creating significant friction between the slats and the bottom rail. Each slat is angled with respect to the lifting cord by abutting the surface of the slat adjacent to the slat.

Hereinafter, embodiments of the present invention shown in the drawings will be described.

In the figure, 1 indicates a window frame and 2 indicates a guide frame. The guide frame 2 is curved downward in an arc shape from a nearly horizontal position, and in the illustrated embodiment is fixed inside the window frame 1 and arranged on both sides of the window.

A head box 3 of a venetian blind is fixed between the tops of the guide frame 2.

A large number of slats 5 are horizontally supported at equal intervals vertically by a support cord 4 hanging from the head box, and both ends of a bottom rail 6 attached to the lower end of the support cord 4 are connected to the guide frame 2. arranged so as to be guided by.

Guide rolls 7 are attached to both ends of the bottom rail 6 so that the bottom rail 6 moves smoothly along the guide frame 2 (FIG. 4).

A lifting cord for lifting and lowering the slats (ne) passes through each slat downward from the head box 3, connects to the bottom rail 6 at its lower end, and a cord guide member 9 that guides the operating cord 8 is installed inside the window frame. The lower end of the operating cord 8, which is disposed along the window, allows the blind to be opened and closed and the slats to be tilted.

To prevent the slats from contacting the lifting cord flatly and creating significant friction between them, a portion of the outer edge of each slat protrudes downward and abuts the surface of the adjacent slat below. This allows each slat to have an angle with respect to the lifting cord.

An example of such a structure is shown in FIG.

In FIG. 5A, the edge of the end of the slat 5 is folded into a triangular shape to form a protrusion 10, and its tip contacts the surface of the slat below to prevent the two slats from coming into close contact with each other.

At the opening in FIG. 5, the outer edge of the slat 5 is folded to form a protrusion 11.

In this case, the slat is in line contact with the lower slat at the lower edge of its projection 11.

In FIG. 5, a member integrally formed with the protrusion 12 is attached to the end of the slat 5.

In either case, the slats 5 are prevented from coming into flat contact with the lifting cord, so that when lowering the slats, the friction created between the slats and the lifting cord will not create a large resistance to the lowering. be prevented,
Slab I~ can be smoothly opened and closed along the curved path.

As described above, according to the present invention, a venetian bran can be obtained that can be smoothly opened and closed along an arcuate curved path.

[Brief explanation of drawings]

Figure 1 is a side view of the Venetian blind according to the present invention.
Figure 2 is a partial front view of the Venetian blind seen from the right side of Figure 1, Figure 3 is a partial front view of the Venetian blind seen in the direction of arrow III in Figure 1, and Figure 4 is Enlarged side view of the bottom rail of a Venetian blind,
Figures 5A and 5C are perspective views showing a part of the slat. 1... Window frame, 2... Guide frame, 3...
...Head box, 4...Support cord, 5
...Slat, 6...Bottom rail,
7...Guide roll, 8...Operation code, 9...Code guide member, 10, 11.12.
...protrusion.

Claims (1)

[Scope of utility model registration request] A guide frame that curves downward in an arc shape from a near-horizontal position is placed on both sides, and a head box is fixed horizontally between the tops of these guide frames, and the support cord hanging from this head box allows the vertical A large number of slats supported horizontally at equal intervals and both ends of the bottom rail attached to the lower end of the support cord are arranged so as to be guided by the above-mentioned guide frame, and the elevating cord that opens and closes the blind is connected to the head box. the outer edge of each slat to prevent the slat from contacting the lifting cord flatly and creating large friction between them. An arc-shaped venetian blind in which a portion of the blind protrudes downward and abuts against the surface of the adjacent slat below, making each slat at an angle to the lifting cord.