JPS6318711Y2 - - Google Patents

Description

[Detailed explanation of the idea] 【Technical field】

The present invention relates to a hinge structure for a folding door, and particularly to a hinge structure in which shaft portions formed on adjacent door panels are housed in a pair of bearing grooves each having a C-shaped cross section provided in a hinge member.

[Background technology]

The hinge structure having the above configuration has the advantage that by forming the shaft part integrally with the door panel, the door panels can be rotatably connected with a small number of parts. Since the parts are usually made of synthetic resin, they have the problem of being prone to wobbling.

[Purpose of the invention] The present invention was devised in view of the above points, and its purpose is to eliminate the above-mentioned rattling, prevent fingers from jamming, which is a common problem with folding doors, and prevent folding doors. The purpose of the present invention is to provide a folding door hinge structure that can automatically extend the door panel.

[Disclosure of invention]

Therefore, the present invention consists of a vertical shaft integrally formed on the side of the door panel, a hinge member having a pair of C-shaped bearing grooves in cross section, and a flat spring plate spacer. The shaft portions at each side end of the pair of adjacent door panels are rotatably housed in the pair of parallel bearing grooves in the member, and the two door panels are foldably connected to each other, and the outer surface of the hinge member and each door panel are connected to each other. The spring plate, which is disposed between the sliding contact pieces integrally formed with each other and held between the two, is brought into sliding contact between the sliding contact pieces as the two door panels rotate. The hinge member is characterized in that it is elastically bent along the outer surface of the hinge member, and a spring is inserted between the hinge member and the sliding contact piece, both of which are integrally formed with the door panel. The structure is such that the plate is sandwiched between the plate and the plate. Hereinafter, the present invention will be described in detail based on the illustrated embodiment. A cylindrical shaft portion 2 in an upward and downward direction is integrally attached to the side of a door panel 1 made of synthetic resin that constitutes a folding door A, with the shaft portion 2 facing outward. A sliding contact piece 6 whose tip is directed toward the shaft portion 2 is integrally provided in a protruding manner. The hinge member 3 is formed as an aluminum extrusion molded product, and has a substantially 3-shaped cross section in which a pair of bearing grooves 4, 4 each having a C-shaped cross section are arranged in parallel. The shaft portions 2, 2 located at each side end of the adjacent door panels 1 are rotatably accommodated in the two bearing grooves 4, 4 of the hinge member 3, respectively, so that both the door panels 1, 1 can be freely folded. is connected to. The spring plate 5 is a flat plate made of spring steel or synthetic resin, and has stoppers 7 on both sides thereof.
7, which is disposed over the entire length in the vertical direction between the outer surface of the hinge member 3 and the sliding contact pieces 6, 6 on both door panels 1, 1, so that the sliding contact piece 6 is provided on the outer surface of the hinge member. 3 is in contact with the inner surface. This spring plate 5 is installed in the gap created between the door panel 1 and the hinge member 3. As the door panel 1 is rotated, the sliding contact piece 6 comes into sliding contact with the outer surface of the spring plate 5. Flexes elastically along the outer surface. As described above, the folding door A is constructed by connecting a plurality of door panels 1 (two in the illustrated example) so that they can be folded alternately via the hinge members 3, and pivotally supports one side end of the folding door A. However, by arranging guide members such as a runner 8 and a pivot shaft 9 that protrude up and down at the other end so that they can run freely within the upper and lower rails 10 and 11, respectively, it can be folded freely between the upper and lower rails 10 and 11. will be arranged. Now, in the above hinge structure, the spring plate 5, which is elastically bent along the outer surface of the hinge member 3 by folding both the door panels 1, 1, bends both the door panels 1, 1 with its elastic restoring force. It is biased in the direction of expansion. For this reason, when the door panels 1, 1 are released, the folding door A is automatically closed.
Since the spring plate 5 and the hinge member 3 are sandwiched between the sliding contact piece 6 and the shaft portion 2, which are both integrally formed on the door panel 1, the spring plate 5 is By closing the above-mentioned gap, fingers are prevented from being jammed, and rattling between the shaft portion 2 and the hinge member 3 is also prevented. Furthermore, since the elastic force of the spring plate 5 acts equally on both door panels 1, 1, both door panels 1, 1 can be opened and closed smoothly. Due to the contact between the stopper 7 and the sliding contact piece 6, the spring plate 5 does not fall off.

[Effect of the idea]

As described above, in the present invention, the spring plate eliminates the gap that occurs between the hinge member and the door panel that could cause fingers to get caught, and when the spring plate and the door panel are folded, The elastic restoring force automatically extends both door panels, and furthermore, there is a gap between the shaft part, which is integrally formed on the door panel, and the sliding contact piece, which is also integrally formed on the door panel. The spring plate is sandwiched between the shaft portion and the hinge member housed in the bearing groove, and therefore the spring plate reliably prevents rattling in the hinge portion.
Moreover, since the spring plate applies its spring force evenly to each door panel, the door panels can be opened and closed smoothly.

[Brief explanation of drawings]

1 and 2 are horizontal sectional views of an embodiment of the present invention, and FIG. 3 is a perspective view of the same folding door, in which 1 is a door panel, 2 is a shaft, 3 is a hinge member, and 4
5 indicates a bearing groove, 5 indicates a spring plate, and 6 indicates a sliding contact piece.

Claims (1)

[Scope of utility model registration request] It consists of a vertical shaft integrally formed on the side of the door panel, a hinge member having a pair of C-shaped bearing grooves in cross section, and a flat spring plate spacer, which are arranged in parallel on the hinge member. The shaft portions at each side end of a pair of adjacent door panels are rotatably accommodated in the pair of bearing grooves, so that both door panels are foldably connected to each other, and are integrally connected to the outer surface of the hinge member and each door panel. The spring plate, which is disposed between the formed sliding contact pieces and held between the two, causes the hinge member to slide into contact with the sliding contact pieces as the door panels rotate. A folding door hinge structure that elastically bends along the exterior surface.