JP2618203B2 - Overhead door equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in an overhead door apparatus, and more particularly, to an overhead door apparatus which allows a user to easily use different types of doors according to the purpose.

[0002]

2. Description of the Related Art Overhead door devices are often used as doors for opening and closing large openings such as garages, factories, and warehouses.

[0003] The overhead door device has a structure in which a door body in which a plurality of door panels called sections are connected in a vertically bendable manner is supported so as to be able to move up and down along guide rails that stand up along both ends of a building opening. The door body can be quickly opened and closed via a manual or electric opening and closing mechanism.

[0004]

In a food processing factory or the like, the door may be left open to improve ventilation, but in that case, a fly or the like may enter from the outside, which is not hygienic. Has requested to install a screen door.

However, in the conventional overhead door device structure, if an attempt is made to provide a screen door in addition to the original door functioning as an outer door, the depth of the guide rail portion is reduced because the guide rails are provided inside and outside. As the size increases, the space utilization efficiency of the building deteriorates, and the inside door has a large gap between the opening and the opening when it is closed.Therefore, special sealing members must be provided to ensure airtightness. The problem that it does not occur.

The present invention has been made in view of such a problem, and has good operability in which different types of doors such as doors and screen doors can be easily used without providing a double guide rail at the opening. It is intended to provide an overhead door device.

[0007]

According to the present invention, a guide rail is set up along both ends of an opening of a building, and both ends of a door body in which a plurality of vertically divided sections are flexibly connected to each other are guided by guide rollers. In an overhead door device supported on the guide rail so as to be able to move up and down via
The guide rail branches at a portion higher than the vicinity of the upper end of the opening, and a different door body is supported on each of the branched guide rails, and a branch guide rail at a branch portion of the guide rail according to its swing position. A switching lever that allows only one of them to be connected to the guide rail below the branch portion is provided to be swingable, and when the door body is fully closed,
Position the upper guide roller beside the switching lever,
This switching lever was fixed at a predetermined swing position .

[0008]

In the above construction, since the door main body is supported in the retracted state on each of the guide rails branched at a portion above the vicinity of the upper end of the opening, any of the door main bodies can be arbitrarily selected and the branching portion can be formed. The opening can be closed by the selected door body by pulling it down to a lower guide rail.

As for the portion along the opening, there is only one pair of guide rails on the left and right, so that the mounting dimension in the depth direction does not increase, and the seal at the time of closing is also the entire circumference of the door body and the opening. Can be easily performed.

On the other hand, a switching lever is provided at the branch portion of the guide rail so as to swing freely, and only one of the branch side guide rails is continuous with the guide rail below the branch portion according to the swing position of the switching lever. With this configuration, when the closed door body is opened, the inconvenience of being erroneously guided to the branch-side guide rail in which the other door bodies are stored is avoided. Is reliably guided to the corresponding branch side guide rail, so that the door body can be smoothly opened.

When the door body is fully closed, the uppermost guide roller is positioned beside the switching lever, and the switching operation is performed.
Since the lever is fixed at the predetermined swing position, the swing of the switching lever is prevented by the guide roller, so that it is possible to reliably prevent the switching lever from moving due to malfunction of the fixing means or mischief while the door is closed. be able to.

[0012]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

1 to 3, reference numeral 1 denotes a guide rail which stands up along both sides of an opening 21 of the building 2. A first branch-side guide rail 11 extending rearward along the ceiling 22 and a second branch rail located thereunder.
And a branch side guide rail 12.

As shown in FIG. 3, the guide rails 1 and 11 and 12 have a substantially U-shaped cross section in which a flat portion 13 is formed on the outside and a groove portion 14 is formed on the inside.

Reference numerals 3 and 4 denote first and second door bodies stored in the first and second branch-side guide rails 11 and 12, respectively. The first door main body 3 is configured by vertically connecting sections 31 formed in a horizontally long rectangular panel shape by a metal plate material such as a steel plate or aluminum or a fiber glass. Also, the second door body 4
Has a configuration in which a plurality of sections 41 are connected in the vertical direction, similarly to the first door body 3.

The first door main body 3 and the second door main body 4 (sections 31 and 41) have different structures, for example, one of them is a whole plate for forming a strong door for crime prevention. It is formed as a frame-shaped member, and the other is formed as a screen door having a frame structure with a net meshed inside to allow ventilation.

Each of the door bodies 3 and 4 has a section 3
It is configured to bendable via hinges provided at key points on the indoor side surfaces of the first and second indoors. At both ends of each door body 3, 4,
As shown in FIG. 3, a roller hinge 5 is provided, and a guide roller 52 is rotatably supported on the roller hinge 5 via a roller shaft 51.

The guide roller 52 fits loosely between the flat portion 13 and the groove portion 14 of the guide rails 1, 11 and 12, and rolls on the groove portion 14 to guide the door body 3 or 4. The rails 1 and 11 and 12 are supported so as to be freely movable.

As shown in FIG. 3, the building opening 21 is provided with a weather strip 23 at a position facing the interior, and when closed, the weather strip 23 is elastically contacted with the front surface of the door body 3 or 4 so as to achieve airtightness. is there.

In the building 2, the wire drums 7, 8 are rotatable via shafts 71, 81 at a position slightly above the guide rail branch portion 6 and at a position substantially behind the branch guide rails 11, 12, respectively. It is provided in.

Each of the wire drums 7 and 8 has a wire rope 7 having a leading end connected to a lower end of the door body 2 or 3.
2, 82 are wound, and a wind-up biasing force is applied via a spring (not shown) in a direction that balances the door weight, so that the door body 2 or 3 can be manually opened and closed with a light operating force. It constitutes a switchgear.

The wire drums 7 and 8 and the wire ropes 72 and 82 are provided in a pair of left and right sides so as to impart a balance force to both ends of the door bodies 2 and 3, respectively. Regarding the second door body 3, since the wire drum 8 is located at the rear, the wire rope 82 is routed through a wire lobe 83 provided slightly behind the guide rail branching portion 6, so that the opening direction is set. The force acts along the guide rail 1.

FIG. 4 shows the details of the guide rail branch portion 6, and as shown in FIG.
The switching lever 9 is swingably supported via a bolt 62 on a bracket 61 provided at the intersection of 12.

The switching lever 9 swings forward and upward as shown by the solid line in FIG. 4, and a position at which the tip end portion 91 abuts the guide rail flat portion 13 (hereinafter, this position is referred to as an "up position"). In this case, only the second branch-side guide rail 12 is connected to the lower guide rail 1. In addition, as shown by the imaginary line, the end portion 91 swings substantially vertically downward and abuts on the guide rail groove portion 14 (hereinafter referred to as a “down position”).
That. In (1), only the first branch-side guide rail 11 is connected to the lower guide rail 1.

As described above, the switching lever 9 forms a part of the first branch side guide rail 11 or the second branch side guide rail 12 according to the swing position. In order to smoothly roll the guide roller 52 as a part of the guide rail in this manner, as shown in FIG. 5, the switching lever 9 has a surface following the first branch side guide rail 11. And a flat portion 93 is formed on the surface following the second branch-side guide rail 12, respectively.
The cross-sectional shape of the guide rail is formed continuously at the branch portion 6 regardless of the swing position of the guide rail.

In this embodiment, as a fixing means for preventing the switching lever 9 from inadvertently moving in a closed state in which one of the door bodies 3 or 4 is pulled down on the guide rail 1, a switching lever tip portion 91 is provided. The magnet 10 is attached to the flat portion 13 of the guide rail 1 which comes into contact at the ascending position, and the tip portion 91 is attracted by the magnet 10. Since the lower position of the switching lever 9 is held by gravity, no fixing means such as the magnet 10 is provided for the lower position. In addition, the door body 3 or 4
When closed, the uppermost guide roller as shown in FIG.
52 is set to the side of the switching lever 9.
As a result, the guide roller 52 causes the switching lever 9
Reversal operation is prevented .

Next, the operation will be described.

In the fully opened state, the first and second door bodies 3 and 4 are respectively attached to the first and second branch side guide rails 11 and 12 as shown by broken lines in FIG. 1 or FIG. Is stored. From this state, if one of the door bodies 3 and 4 is selected and pulled down to the guide rail 1 below the branch portion 6, the opening 21 can be closed by the selected door body.

At this time, the switch lever 9 is fixed at a position where the switching lever 9 happens to interfere with the door body 3 or 4 to be closed, that is, at the raised position with respect to the door body 3 and at the lowered position with respect to the door body 4. Even if the fixed state depends on the attraction force or the gravity of the magnet 10, the swing position can be easily adjusted by contact with the guide roller 52 at the leading end (lower end) of the door body 3 or 4 during the closing operation. And the switching lever 9 is fixed at the inverted position. Therefore, the switching lever 9 does not hinder the door closing operation.

Regardless of which of the two types of door bodies 3 and 4 are closed, only one pair of the left and right guide rails 1 is required for the portion along the opening 21 so that the mounting dimension is in the depth direction. It does not become large, so that the indoor space of the building 2 is not damaged by the guide rail 1. Further, airtightness at the time of closing can be easily secured by the weather strip 23 provided in the opening 21.

Next, when performing the door opening operation, the door body 3 or 4 is reliably guided by the switching lever 9 of the branch portion 6 to the branch side guide rail 11 or 12 to be stored. Switching lever 9 when door is fully closed
Has moved in the opposite direction, when the door body 3 or 4 is to be opened, the other is guided to the branch side guide rail 11 or 12 in which the other is stored.
As described above, when the door body is fully closed, the uppermost guide
Roller 52 is positioned beside switching lever 9 and
Since the switching lever 9 is fixed at a predetermined swing position, the door
Switching lever due to malfunction of fixing means or mischief during closing
-9 can be reliably prevented from moving.
At the same time, it may be guided to the other guide rail
No.

In this embodiment, the configuration in which the magnet 10 is provided as a fixing means of the switching lever 9 is exemplified. However, the fixing means is not limited to this. For example, the switching lever 9 is fixed by a spring tension. By pressing against the bracket 61 with force, a friction is generated between the two, and the action of the friction causes the switching lever 9 to move.
May be held.

The door body 3 or 4 is not limited to a screen door or a louver, and can be used in any combination of various structures according to the purpose. For example, one of the door bodies is provided with a transparent window made of glass or acrylic. The structure may be
This makes it possible to use the building as a showroom.

[0034]

According to the present invention, since the door main body is supported on each of the guide rails branched from the portion above the upper end of the opening of the building, the door main body can be arbitrarily selected in any door main body. If it is pulled down to the guide rail below the branch, the opening can be closed by the selected door body, and therefore, without impairing the space use efficiency and airtightness of the building, in addition to ordinary doors Different types of doors can be used, such as screen doors and glass doors.

In particular, in the present invention, a switching lever is provided at the branch portion of the guide rail so as to swing freely, and only one of the branch-side guide rails is located below the branch portion depending on the swing position of the switching lever. When the door body is closed, it can be reliably guided to the corresponding branch-side guide rail when the door body is opened . Turn off the guide roller
Since the switching lever is fixed to a predetermined swing position by being positioned to the side of the switching lever, the swing of the switching lever is prevented by the guide roller. The situation in which the switching lever is moved can be reliably prevented, and the above-described excellent operability can be further ensured. Further, an effect that the opening operation of the door body can be performed reliably and smoothly can be obtained.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view mainly showing an opening of a building according to an embodiment of the present invention.

FIG. 2 is a longitudinal sectional view mainly showing a ceiling portion of a building according to the embodiment of the present invention.

FIG. 3 is a sectional view taken along line AA of FIG. 1;

FIG. 4 is a side view showing details of a guide rail branch portion according to the embodiment of the present invention.

FIG. 5 is a sectional view taken along line BB of FIG. 4;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Guide rail 11 1st branch side guide rail 12 2nd branch side guide rail 13 Flat part of guide rail 14 Groove part of guide rail 2 Building 21 Building opening 22 Building ceiling part 23 Weather strip 3 First Door body 31 section 4 second door body 41 section 5 roller hinge 51 roller shaft 52 guide roller 6 branching portion 61 bracket 62 bolt 7 wire drum 71 shaft 72 wire rope 8 wire drum 81 shaft 82 wire rope 83 wire sheave 9 switching lever 91 Tip of switching lever 92 Groove of switching lever 93 Flat portion of switching lever 10 Magnet

Claims (1)

(57) [Claims] 1. A guide rail is set up along both ends of an opening of a building, and both ends of a door body, which is connected to a plurality of sections divided in a vertical direction in a bendable manner, are moved up and down on the guide rail via guide rollers. In the overhead door device freely supported, the guide rail is branched at a portion above the vicinity of the upper end of the opening, and a different door body is supported on each of the branched guide rails. A switching lever that allows only one of the branch-side guide rails to be continuous with the guide rail below the branch portion in accordance with the moving position, and that is swingably provided;
When the body is fully closed, switch the topmost guide roller
The switch lever in the predetermined swing position.
An overhead door device which is fixed to an installation.