JP3349774B2 - Folding door - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a folding door formed by connecting a plurality of panels using joint members, such as a shutter, a partition door, etc., installed in an opening of a building or a garage. The present invention relates to a structure of a rail-side frame suitable for application to a folding door that is opened and closed along a rail.

[0002]

2. Description of the Related Art Conventionally, the above folding door has a perspective view of FIG. 5, a longitudinal sectional view of FIG.
As shown in the cross-sectional view of FIG. 7, the bearing 4f formed on the vertical frame 4a formed of the extruded profile of each panel 4 and the first and second joint members 5, 6 formed of the extruded profile are formed. The cylindrical support shaft 5a or 6a is rotatably fitted, and the panel 4 and the joint members 5, 6 are connected alternately to form a foldable panel unit 3 including a plurality of panels 4. Also,
The suspension roller 20 attached to the upper end of the first joint member 5 is mounted on the hanger rail 1 b of the upper rail 1 so as to be able to roll freely, and the guide roller 21 attached to the lower end of the joint member 5 is connected to the lower rail 2. The guide rollers 22 and 23 attached to the upper and lower ends of the second joint member 6 are fitted into the guide grooves 2a and fitted into the guide grooves 1a of the upper rail 1 and the guide grooves 2a of the lower rail 2, respectively. Also, the upper frame 4b and the lower frame 4d of the panel 4 are inserted into the guide grooves 1a and 2a of the pair of upper and lower rails 1 and 2 in which the panel unit 3 is mounted on a building or a garage. There is no gap between the lower end of the upper rail 1 and the lower end of the lower frame 4d and the upper end of the lower rail 2 when viewed from outside or indoors.

In such a conventional folding door, upper and lower rails 1 and 2 are formed to be curved at corners of a room surrounded by the door, as shown in FIGS. Also, the upper and lower rails may be formed to be curved in an S shape. However, as described above, in the structure in which the upper frame 4b and the lower frame 4d of the panel 4 are inserted into the guide grooves 1a and 2a, respectively, the upper and lower frames 4b and 4d
There it is necessary to pass smoothly without contacting the guide groove 1a, the inner wall 1c of 2a, in 2c, the width L ₁ of the panel 4, the guide groove 1a, the width W and upper and lower rail 4b of 2a, 4
the difference between the width S ₁ of d (W-S _1), thus being determined by the radius of curvature R of the curved portion. As in the conventional structure, the upper and lower rail 4b, in that the width S ₁ of 4d the same width throughout the vertical, on the relationship between passing rail curved portion, the width L ₁ of enough panel 4 is the radius of curvature R becomes smaller must be shortened, as a result, must be connected a number of short panel 4 width L _1, panel 4 and the number of parts such as the joint members 5 and 6 on the increase, these assembly steps is increased There was a problem that the cost was high. In particular, the panel body 4e
In the door unit that constitutes the panel unit with transparent glass or resin, the transparent glass for the entire opening area of the entire door unit,
The area of the resin or the like, that is, the effective opening area is greatly reduced. In addition, there is a problem that the appearance is inferior because the number of joint members increases.

In order to solve such a problem, Japanese Utility Model Laid-Open Publication No. Sho 62-189489 proposes an example in which each panel has a curved shape corresponding to the curvature of the curved portion of the rail. When the structure described in the publication is adopted, it is difficult to fold the panel because the panel is curved, and it is difficult to cope with an S-shaped meandering track or the like because the panel is bent in a certain direction. In addition, there is another problem that the panel body 4e to be fitted between the frames has a special structure, which increases the cost. Further, in Japanese Utility Model Publication No. 2-4234, the opening width W of the guide grooves 1a, 2a is limited only to the curved portion of the rail.
However, according to this structure, there is a problem that a special rail is required and the cost is also increased.

In view of the above problems, the present invention can increase the width of a panel even when it is used for a folding door in which a panel unit is mounted to be openable and closable along a rail having a curved portion. Accordingly, it is possible to reduce the number of parts and the number of assembling steps of the folding door, thereby achieving cost reduction, and to provide a folding door that does not reduce the effective opening area of the door portion and improves the appearance. .

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a panel unit comprising a plurality of panels which are foldably connected via joint members along a pair of upper and lower or right and left rails. In the folding door assembled so as to be openable and closable, a projecting portion having a thickness smaller than the main body of the frame is formed on the rail-side frame of each panel so as to protrude toward the rail over the entire length, and the projecting portion is formed. The rail is inserted into the guide groove.

[0007]

According to the present invention, the projecting portion having the reduced thickness of the rail-side frame of each panel constituting the panel unit is inserted into the guide groove of the rail. The frame does not easily contact the wall surface of the guide groove, and the width of the panel can be increased.

[0008]

1 is a perspective view showing an embodiment of a folding door according to the present invention, FIG. 2 is a longitudinal sectional view thereof, FIG. 3 is a front view thereof, and FIG. 4 shows a state of the rail at a curved portion. FIG. As shown in FIGS. 1 to 4, the folding door of this example has a thickness smaller than the thickness S ₁ of the main body of the upper and lower frames 4 b and 4 d over the entire length of the panel on the upper frame 4 b and the lower frame 4 d of the panel 4. protrusion 4m with S _2, formed to protrude to 4n to the rail 2 side, respective protrusions 4m, the 4n vertical les - are inserted Le 1,2 guide groove 1a, the 2a. Other structures are the same as those described in the conventional example.

As described above, the thickness S ₂ of the protrusions 4m and 4n is
The upper and lower rail 4b, since the smaller than the thickness S ₁ of the main body portion of 4d, as compared with the case of inserting the stile that the same upper and lower thickness as in the conventional example the guide groove 1a, the 2a, the panel be increased 4 width L _2, the guide groove 1a, the inner wall 1c of 2a, stile parts are less likely to contact with 2c, it is possible to increase the width L ₂ of the panel 4. Therefore, the number of the panels 4 can be reduced, and as a result, the joint members 5,
6 can be reduced, and the effective opening area is not reduced. Furthermore, as a result, the number of assembly steps can be reduced, and the manufacturing cost can be reduced. Further, the appearance is improved as compared with a door constituted by a large number of joint members.

Although the present invention has been described with reference to the embodiment of the horizontally extending type folding door, the present invention can also be applied to a vertically extending type folding door. In addition, the present invention can be variously modified and added to the structure and combination of the rails, panels, joint members, guide grooves, upper and lower stiles, and projecting portions without departing from the gist of the present invention, in addition to the embodiments described above. is there.

[0011]

According to the present invention, the thin projections formed on the rail-side frame of each panel constituting the panel unit are inserted into the guide grooves of the rails. To increase the width of the panel,
The panel unit can be configured without reducing the effective opening area of the door, and the appearance is improved. In addition, the number of panels and joint members can be reduced, and the number of assembling steps can be reduced, so that manufacturing costs can be reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a folding door according to the present invention.

FIG. 2 is a longitudinal sectional view of the embodiment.

FIG. 3 is a front view of the embodiment.

FIG. 4 is a cross-sectional view showing a state of the rail of the embodiment in a curved portion.

FIG. 5 is a perspective view of a conventional folding door.

FIG. 6 is a longitudinal sectional view of a conventional example.

FIG. 7 is a cross-sectional view showing a state in a curved portion of a conventional rail.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Upper rail 1a, 2a Guide groove 2 Lower rail 3 Panel unit 4 Panel 4a Vertical frame 4b Upper frame 4d Lower frame 4e Panel main body 4m, 4n Projection part 5, 6 Joint member

Claims (1)

(57) [Claims] 1. A folding door in which a panel unit comprising a plurality of panels foldably connected via a joint member is openably and closably mounted along a pair of upper and lower or left and right rails. A projecting portion having a thickness smaller than a main body portion of the frame is formed on the rail-side frame so as to project toward the rail side over the entire length, and the projecting portion is inserted into a guide groove of the rail. Folding door.