JPH0119031B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic opening/closing device for a folding door, which is constructed by rotatably connecting a plurality of doors at their joint edges.

In general, this type of folding door has a starting end door pivoted to one wall of the opening/closing opening that forms the entrance/exit, and a guide rail extending from one wall of the opening/closing opening toward the other wall on the terminal side. They are adapted for sliding engagement.

By the way, there were conventional folding doors of this type that opened and closed automatically, but since each folding door performs a complicated movement in which each door rotates and bends and extends along a guide rail, The opening/closing device for opening and closing the folding door is also complicated and large, making it difficult to apply it particularly to shops and the like where appearance is important.

The present invention provides a torque arm protruding in the thickness direction of the door at the engagement portion of the door that slides and engages with the guide rail, and a movable body movable along the guide rail in the direction of movement thereof. By providing a movable body that moves relatively to the movable body, connecting the torque arm and the movable body to each other via a swing arm, and providing a drive device that reciprocates the movable body along the longitudinal direction of the guide rail, The objective is to obtain an automatic opening/closing device with a simple structure and small size.

The configuration according to the present invention will be explained in detail below based on the illustrated embodiments. In addition, in the drawings, FIG. 1 is an explanatory plan view in which the opening/closing device according to the present invention is applied or the folding door is in the closed state, FIG. 2 is an explanatory plan view in the half-opened state, and FIG. 4 is a partially sectional plan view of FIG. 3, and FIG. 5 is a partially sectional plan view corresponding to FIG. 4 in a half-opened state.

Reference numeral 1 denotes an opening/closing opening forming an entrance/exit, and an upper frame 1a forming an upper wall thereof includes one wall 1 of opening/closing opening 1.
A guide rail 2 is fixed and extends from b toward the other wall 1c, that is, in the width direction of the opening/closing opening 1.

Further, a folding door 3 for opening and closing the opening/closing opening 1 is arranged, and the folding door 3 has a narrow door 4 and a wide door 5, which is twice the width of the door 4, on hinges. 6, they are rotatably connected to each other.

The folding door 3 is rotatably connected to the starting edge of the narrow door 4 to one wall 1b of the opening/closing opening 1 by a hinge 7, and the center of the upper edge of the wide door 5 is connected to a guide rail as described later. 2 in a slidable and rotatable manner.

That is, a torque pin 8 is fixedly protruding from the center of the upper edge of the door 5, and is rotatably engaged with a support plate 10 of a movable body 9 moving along the guide rail 2.

As shown in FIGS. 3 and 4, the moving body 9 is provided with two rollers 11, 11 that protrude leftward at the upper part of the support plate 10.
is fitted onto the guide rail 2 so that it can roll.

Further, a torque arm 12 that protrudes toward the side of the door 5, that is, the thickness direction, is fixed to the aforementioned torque pin 8, while a movable body 13 that protrudes in the same direction as the torque arm 12 is fixed to the movable body 9. will be established. That is, as shown in FIGS. 3 and 4, a holding plate 14 is fixed to the supporting plate 10 so as to protrude rightward, and two rails extending parallel to the guide rail 2 are provided at both ends of the holding plate 14. The guide bars 15, 15 are locked, and the aforementioned movable body 13 is slidably fitted and locked to the guide bars 15, 15.

The torque arm 12 and the movable body 13 are mounted on a rocker whose one end is pivotally supported by the tip of the torque arm 12 and the other end is pivotally supported by the outer end of the movable body 13 (the right end in FIGS. 3 and 4). They are connected to each other via a movable arm 16.

In this case, the movable body 13 and the swinging arm 16 are such that when the doors 4 and 5 are in a straight line state, that is, the folding door 3 is in a closed state, the swinging arm 16 is connected to the torque arm 1.
2 and so that the movable body 13 is at the end position of the guide bar 15 (position in the direction of the other wall 1c), and the length of the guide bar 15 is such that the torque arm 12 is When the folding door 3 is turned to the right by 90 degrees, that is, when the folding door 3 is fully opened, the movable body 13
is set to be the starting end position of the guide bar 15 (the position in the direction of one wall 1b).

Reference numeral 17 denotes a drive device, which is connected to one wall 1b of the opening/closing opening 1.
A pulley 18 supported on the other wall 1c and a sprocket 20, which is provided on the other wall 1c and rotationally driven by a motor 19, are arranged to face each other, and a rope 21 is attached to the pulley 18, and a chain 22 is attached to the sprocket 20. While winding, one end of the rope 21 and one end of the chain 22 are connected to each other so as to face the movable body 13, and the other end of the rope 21 and the other end of the chain 22 are connected to each other.

Then, the motor 19 moves the movable body 13 in the direction of one closing 1b via the rope 21 and the chain 22 by operating the switch of the phototube 23, 23 provided on the exit side or the entrance side of the opening/closing port 1. When the movable body 13 and thus the movable body 9 approach one wall 1b, the rotational drive is stopped by the operation of the micro switch 24 by the movable body 9, and after a predetermined time, The circuit is set such that when the movable body 9 approaches the other wall 1c, the reverse rotation drive is stopped by the operation of the micro switch 25 by the movable body 9. There is.

Next, the operation of the configuration according to the present invention will be explained.

First, the folding door 3 extends in a straight line, and the opening/closing door 1
When the switch of the phototube 23 provided in the opening/closing port 1 is activated while the opening/closing port 1 is closed, the motor 19
is activated, and the movable body 13 is pulled toward one wall 1b of the opening/closing opening 1 via the rope 21 and the chain 22. This tensile force is applied to the tip of the torque arm 12 via the swing arm 16, and a force acts to rotate the torque arm 12 to the right in FIGS. 1 and 4, that is, in the direction of arrow A.

The rotational force of the torque arm 12 is transmitted to the door 5 at the terminal end via the torque pin 8, and the door 5 is rotated in the same direction as the torque arm 12.

When the door 5 is rotated in the direction of arrow A, since the door 5 is connected to the door 4 on the starting end side by the hinge 6, the door 4 on the starting end side is rotated in the direction of arrow A.

Since the starting edge of the door 4 is pivotally connected to the wall 1b by the hinge 7, the rotation of the door 7 in the direction of arrow A causes the door 5 on the terminal end to be moved to the hinge 6.
This tensile force is transmitted to the movable body 9 via the torque pin 8, and the movable body 9 moves along the guide rail 2 to open/close the opening 1 by the rolling of the rollers 11, 11. (the state shown in FIGS. 2 and 5).

In this case, the moving speed of the movable body 13 toward the one wall 1b and the moving speed of the movable body 9 toward the one wall 1b will deviate depending on the amount of swing of the swing arm 16, and the speed of the former will be higher than the speed of the latter. It becomes relatively faster compared to the speed.
Therefore, the movable body 13 moves the guide bar 15 on the guide bar 15 fixed to the movable body 9 as the amount of rotation of the doors 4 and 5, that is, the opening degree of the folding door 3 increases.
5 will slide toward the end on the side of one wall 1b.

Moreover, since the movable body 13 is connected to the torque arm 12 via the swing arm 16, the folding door 3
As the opening degree of torque arm 1 increases,
2 rotates a large amount (approximately 90 degrees) together with the door 5 around the torque pin 8, but this rotation is compensated for by the swinging of the swinging arm, and the movable body 13 is always attached to the guide rail 2. , and move in parallel along this direction. Therefore, the rope 21 and chain 22 connected to the movable body 13 always maintain a predetermined position and move linearly with respect to the guide rail 2.

In this way, when the folding door 3 is fully opened,
Each of the doors 4 and 5 is folded at one wall 1b in a state perpendicular to the longitudinal direction of the guide rail 2.

Next, when the motor 19 is started in reverse and pulls the movable body 13 in the direction of the other wall 1c via the chain 22, the torque arm 12
is urged to rotate in the direction of arrow C in FIGS. 2 and 5, and is pulled in the direction of the other wall 1c.

As a result, the doors 4 and 5, the movable body 13, and the movable body 9 act and operate in the opposite direction to the opening operation described above, and the folding door 3 is closed.

Even during the closing operation, the movable body 13
and the rope 21 and chain 2 connected to this
2 maintains a predetermined position relative to the guide rail 2 and moves linearly.

Note that FIGS. 6 and 7 show a second embodiment, which is different from the first embodiment in that there is an additional door 5 on the terminal end side (the other wall 1c side) of the wide door 5.
The difference is that two doors 5a and 5b having the same width are rotatably connected, and door 5b is provided with the same opening/closing mechanism as door 5, and both are connected to a drive device 17 in series. , and the other configurations and functions are substantially the same as those in the first embodiment, so parts common to those in FIGS. 1 and 2 will be given the same reference numerals as in FIGS. Omitted.

As explained above, according to the present invention, a torque arm protruding in the thickness direction of the door is fixed to the engagement portion of the door that is slidably and rotatably engaged with the guide rail, and A movable body movable along the guide rail is provided with a movable body that moves relatively in the direction of movement of the movable body, the torque arm and the movable body are connected to each other via a swing arm, and the movable body is attached to the guide rail. Since a drive device is provided for reciprocating the door along the door, the turning force required for opening and closing the door can be generated by a movable body that makes a simple linear motion. Moreover, this movable body is
Since it is arranged to be movable relative to the movable body moving along the guide rail, it can be made smaller. Furthermore, since the movable body performs a simple linear motion, the drive device for driving the movable body can also be simplified in structure and made smaller.

[Brief explanation of drawings]

Figures 1 and 2 are an explanatory plan view when the folding door to which the opening/closing device according to the present invention is applied is closed and when it is half-open, and Figure 3 is an enlarged cross-section of the main part of Figure 1. 4 is a partially sectional plan view of FIG. 3, FIG. 5 is a partially sectional plan view corresponding to FIG. 4 when half open, and FIGS. 6 and 7 are closed cases showing other embodiments. FIG. 2 is an explanatory plan view at the time of opening, and an explanatory plan view at the time of half-opening. 1... Opening/closing opening, 1a... Upper wall, 1b... One wall, 1
c...other wall, 2...guide rail, 3...folding door,
4, 5... Door, 6, 7... Hinge, 8... Torque pin, 9
... Moving body, 10... Support plate, 11... Roller, 12...
Torque arm, 13... Movable body, 14... Holding plate, 1
5... Guide bar, 16... Swinging arm, 17... Drive device, 18... Pulley, 19... Motor, 20... Sprocket, 21... Rope, 22... Chain.

Claims (1)

[Claims] 1. A folding door made by connecting multiple doors so that they can rotate at their joint edges can be bent and stretched along the length of a guide rail that extends from one wall of the opening to the other wall. In one that engages with
A torque arm that protrudes in the thickness direction of the door is fixed to the engagement portion of the door that is engaged with the guide rail, and is movable relative to the moving body that is movable along the guide rail in the direction of movement. An automatic opening/closing device for a folding door, comprising a movable body, the torque arm and the movable body being connected via a swing arm, and a drive device for reciprocating the movable body in the longitudinal direction of a guide rail.