JPH07233686A - Safety device for motor-driven movable center pillar - Google Patents

Abstract

PURPOSE:To surely stop a motor-driven movable center pillar from its running even though an obstacle strikes upon the center pillar at any part thereof and even though the center pillar is caught by dust in a floor surface rail. CONSTITUTION:In a motor-driven center pillar 5 which is movably suspended from a hanger rail 10 laid along an upper frame for an opening in a building through the intermediary of hanger rollers 11, a suspending part of the center pillar 5 is provided with a normally turned-off stop switch 19 for moving the center pillar 5. The stop switch 19 is operated in association with lateral swing of the center pillar 5 in a direction in which the center pillar 5 is moved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric movable center pillar safety device.

[0002]

2. Description of the Related Art If the frontage of an opening is wide, the shutters and the like are of a multiple mounting type, and a movable center pillar is provided. It is fixed and moved to the wall side so as not to obstruct the opening when the opening is opened. In addition, the center pillar is also moved by electric power, and in particular, the safety of the electric movable middle pillar poses a problem. FIG. 5 is a schematic cross-sectional view of a center pillar showing a conventional electric movable center pillar safety device.
As shown in FIG. 5, a tape switch a is provided on the side surface of the center pillar, and an obstacle on the moving path of the center pillar is detected by the tape switch a. However, according to this method, there is a problem that the safety device does not operate when an obstacle hits a portion other than the tape switch. Further, usually, a rail is provided on the floor surface to stably move the middle pillar.
If dust is clogged inside the tool, the tape switch cannot detect the dust.

[0003]

DISCLOSURE OF THE INVENTION The present invention was devised to eliminate the above-mentioned problems, and to reliably stop the traveling of the middle pillar regardless of which part of the middle pillar hits an obstacle. The purpose is. Another object of the present invention is to reliably stop the middle pillar even when the middle pillar is caught by dust in the floor rail.

[0004]

The technical means adopted by the present invention in order to solve the above-mentioned problems are as follows: A hanger rail provided along an upper frame of a building opening is provided with a hanger roller. In an electrically movable center pillar that is movably suspended by means of a movable column, a suspension switch for driving the center column that is always held in an inoperative state is provided in the suspension part of the center column. It is characterized in that it operates in response to the swinging of the power source to turn off the power. Preferably, in the above means, the actuators of the stop switch are provided at both left and right ends of the suspension section in the moving direction of the middle column, facing the hanger rails, and the actuators are arranged in the left and right directions of moving the middle column. The stop switch is actuated by contacting the hanger rail in response to the swing of the.

[0005]

When the obstacle is present in the moving path of the center pillar during the movement of the center pillar, the middle pillar hits the obstacle and swings. Along with the swinging of the center pillar, a stop switch for driving the center pillar movement is actuated to cut off the power and stop the movement of the center pillar.
Even if there is dust in the rails on the floor, the lower end of the center column is caught and the center column swings, and the stop switch operates in the same manner.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to an illustrated embodiment. In this embodiment, as a preferred embodiment, a case where the electrically movable center pillar is used for the over head door is shown. FIG. 1 is a schematic side view of an over head door, and FIG. 2 is a schematic front view with an opening closed. A winding shaft 1 is mounted near the ceiling above the opening, and winding drums 2 for winding a winding loop (not shown) are mounted on both ends of the winding shaft 1. Guide rails 4 for guiding one end of the shutter panel 3 are provided upright on both sides of the opening, and the upper portions of the guide rails extend in a curved shape toward the inside of the room. On the other hand, guide rails are also formed on both sides of the center pillar 5 so as to guide one end of the shutter panel 3. When the opening is closed, the central pillar 5 is pulled out from the wall side and fixed at a predetermined position, and when the opening is opened, the central pillar 5 is housed on the wall side so as not to obstruct the opening.

FIG. 3 is a side sectional view of the center pillar according to the present invention, and FIG. 4 is a front view of the same, as viewed from the inside of the opening. The I-shaped steel having the web 8 vertically and the flanges 9a and 9b positioned vertically is installed in the lintel 6 in parallel with the upper frame 7 of the opening. -Constituting rule 10. The upper part of the middle pillar 5 has a hanger frame 1 on which a hanger roller 11 is attached.
The hanger roller 11 is adapted to roll on the inner surface of the lower flange 9b of the I-shaped steel which is suspended by two and which constitutes the hanger rail 10. The hanging frame 12 is formed in a substantially U-shaped cross section from both side portions 12a and a bottom portion 12b which are parallel to the I-shaped steel web 8, and a hanger roller 11 is axially attached to both side portions 12a so as to face each other. ing. The upper portion of the middle pillar 5 is fixed to the bottom portion 12b of the suspension frame by bolts and nuts. On both sides 12a of the hanging frame, a part of a portion facing the lower flange 9b of the I-shaped steel is cut out and the roller 13 is formed.
Is rotatably attached, and the roller 13 is adapted to slide on both side edges of the lower flange 9b so as to roll. Floor 14
A rail 15 is provided along the moving direction of the center pillar 5, and guides a guide roller 16 provided at the lower end of the center pillar 5 when the center pillar 5 moves.

The rotating shaft of the hanger roller 11 is interlocked with an electric motor (not shown). When the electric motor is driven, the hanger roller 11 rolls on the hanger rail 10 and the center pillar 5 moves. It is supposed to do. Fixing rods 17 are built in the upper and lower ends of the center pillar 5 so that they can be retracted and retracted, and the center pillar 5 is stopped at a predetermined position to lock holes 1 provided on the floor surface 14 and the lintel portion 6.
The center pole 5 is fixed by inserting a fixing rod into the column 8.

At the hanging portion of the center pillar 5, a center pillar drive stop switch 19 for detecting the inclination of the middle pillar 5 and stopping the driving of the middle pillar 5.
Is provided. Actuator 20 of stop switch 19
Is mounted on support plates 21 provided at the upper ends of both ends in the moving direction of the middle column of the side portion 12a on the indoor side of the suspension frame, and the actuator 20 is made of an I-shaped steel with a desired inclination. It faces the inner surface of the upper flange 9a. The actuator 20 is normally brought close to the hanger rail 10, that is, the inner surface of the flange 9a of the I-shaped steel, and in this state, the stop switch 19 is inactive. Since the hanging frame body 12 is fixed to the middle pillar 5,
When the suspension frame 12 swings in the moving direction, the suspension frame 12 also swings, and in response to the swing of the suspension frame 12, the actuator 20
Comes into contact with the inner surface of the flange 9 made of I-shaped steel, thereby actuating the stop switch 19 and cutting off the power for driving the center pole. Since the actuators 20 are provided symmetrically on both sides of the suspension frame 12 of the central column with the suspension frame 12 sandwiched therebetween, the stop switch 19 can be appropriately turned by swinging the central column 5 in the left and right directions. Activate. The configuration of the stop switch 19 according to the present invention is not limited to these, and the point is that the suspension switch for the center pole movement drive which is always held in the inactive state in the suspension portion of the center pole 5. Is provided, and the stop switch is operated in response to the left and right swings of the center column in the moving direction to turn off the power. Also,
Although the embodiment has been described with respect to the case where the floor rail 15 is provided, it goes without saying that the stop switch 19 according to the present invention can also be applied to an electrically movable center pillar that does not have the floor rail. In this case, only the obstacle is detected.

The operation of the electric movable center pillar constructed as described above will be described. Since the central pillar 5 is suspended and moves, if an obstacle is present in the movement path of the central pillar 5 while the central pillar 5 is moving, the central pillar 5 hits the obstacle and swings. With the swing of the center pillar 5, the actuator 20 comes into contact with the inner surface of the upper flange 9 of the I-shaped steel forming the hanger rail 10, and operates the stop switch 19 to operate the hanger roll. The power to the la 11 is cut off, and the movement of the center pillar 5 is stopped. If there is dust inside the rail 15 on the floor,
The guide roller 16 at the lower end portion of the middle pillar 5 is caught, its downward movement is hindered, and the middle pillar 5 swings. With the swing of the center pillar 5, the actuator 20 comes into contact with the inner surface of the upper flange 9 of the I-shaped steel forming the hanger rail 10, and operates the stop switch 19 to operate the hanger roll. The power to the la 11 is cut off, and the movement of the center pillar 5 is stopped. Therefore, when the rail 15 on the floor is clogged with dust, the center pillar is not forcibly moved, and the drive mechanism for the middle pillar is not burdened.

[0011]

According to the present invention, in the electric movable center pillar, which is movably suspended by the hanger rail provided along the upper frame of the building opening through the hanger roller, The suspension unit is provided with a stop switch for driving the center column that is always kept inactive, and the stop switch operates in response to left and right swing of the center column in the moving direction to cut off power. As it is characterized by, even if any part of the center pillar hits an obstacle, the middle pillar can be surely stopped from traveling, and when the middle pillar is caught by dust in the floor rail. Also, it is possible to reliably stop the traveling of the middle pillar. Further, according to the second aspect of the invention, the above-mentioned means is achieved by utilizing the hanger rail which is always in the vertical position with respect to the center pillar, and it is a member of the safety device. The number of points can be reduced and the stop switch can be operated reliably.

[Brief description of drawings]

FIG. 1 is a schematic side view of an overhead door.

FIG. 2 is a schematic front view of the overhead door with the opening closed.

FIG. 3 is a side sectional view of a center pillar according to the present invention.

FIG. 4 is a front view of the center column according to the present invention as viewed from the inside of the opening.

FIG. 5 is a schematic cross-sectional view of a center column showing a conventional electric movable center column safety device.

[Explanation of symbols]

 5 Middle pillar 10 Hanger rail 11 Hanger roller 19 Stop switch for driving the middle pillar 20 Actuator

Claims (2)

[Claims] 1. A hanger provided along an upper frame of a building opening.
In an electrically movable center pillar that is movably suspended on a rail via a hanger roller, a suspension switch for the center pillar movement drive that is always held in an inoperative state is provided at the suspension portion of the center pillar. Provided,
A safety device for an electrically movable center pillar, wherein the stop switch is activated in response to left and right swing of the center pillar in a moving direction to cut off power. 2. The actuator of the stop switch is provided at both left and right ends of the suspension column in the direction of movement of the center column so as to face the hanger rail, and the actuator swings left and right in the direction of movement of the center column. 2. A safety device for an electrically movable center pillar according to claim 1, wherein said stop switch is actuated by abutting the hanger rail in response to the movement.