JP3275064B2 - Safety device for electric movable middle pillar - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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

[0002]

2. Description of the Related Art When the frontage of an opening is wide, the shutters and the like are provided in a multiple connection type, and a movable center post is provided. When the opening is closed, the center post is pulled out from the wall side to provide a space between the shutters. It is fixed and moved to the wall side so as not to obstruct the opening when the opening is opened. In addition, the middle pillar is also moved by electric power, and the safety of the electrically movable middle pillar is particularly problematic. FIG. 5 is a schematic cross-sectional view of a middle pillar showing a conventional safety device for an electric movable middle pillar.
As shown in FIG. 5, a tape switch a is provided on the side surface of the center pillar, and an obstacle on the movement route 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. Usually, rails are provided on the floor to stably move the center pillar, but such floor rails are used.
When dust was clogged in the table, the tape switch could not detect the dust.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and it is intended to surely stop the running of the center pillar even if an obstacle hits any part of the center pillar. It is intended for. Another object of the present invention is to reliably stop the center pillar even when the center pillar is caught by dust on the floor rail.

[0004]

The technical means adopted by the present invention to solve the above-mentioned problems is that a hanger rail provided along an upper frame of a building opening is provided through a hanger roller. In the electric movable middle pillar suspended movably, a stop switch of the middle pillar moving drive, which is always kept in a non-operating state, is provided in a suspending portion of the middle pillar, and the stop switch is provided on a hanger rail.
It is characterized in that it operates in response to forward and backward swinging of the middle pillar moving along the moving direction to cut off the power. Preferably, in the above means, the actuator of the stop switch is provided near the hanger rail at the front and rear ends of the hanging portion in the moving direction , and the center column swings back and forth in the moving direction.
In this case, the stop switch is actuated when the actuator comes into contact with the hanger rail.

[0005]

[Function] If there is an obstacle in the movement path of the middle pillar while the middle pillar is moving, the middle pillar hits the obstacle and moves back and forth in the movement direction.
So that the swings. Along with the swing of the center column, the stop switch of the center column movement drive is activated to cut off the power and stop the movement of the center column. Even when there is dust in the rail on the floor, the lower end of the middle pillar is caught and the middle pillar swings back and forth in the movement direction , and the stop switch is similarly activated.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to one embodiment shown in the drawings. In this embodiment, as a preferred embodiment, a case is shown in which an electrically driven movable pillar is used for an overhead head door. FIG. 1 is a schematic side view of an overhead head door, and FIG. 2 is a schematic front view in a state where an opening is closed. A winding shaft 1 is mounted near the ceiling above the opening, and a winding drum 2 for winding a winding rope (not shown) is mounted at both ends of the winding shaft 1. A guide rail 4 for guiding one end of the shutter panel 3 is provided upright on both sides of the opening, and an upper portion of the guide rail extends in a curved shape toward the indoor side. On the other hand, guide rails are also formed on both sides of the center pillar 5 to guide one end of the shutter panel 3. When the opening is closed, the center pillar 5 is pulled out from the wall side and fixed at a predetermined position. When the opening is opened, the center pillar 5 is stored on the wall side so as not to interfere with 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 lintel portion 6 is provided with an I-beam in which the web 8 is vertical and the flanges 9a and b are positioned up and down in parallel with the upper frame 7 of the opening. -Constitutes a rule 10. The upper part of the center pillar 5 is a hanging frame 1 on which a hanger roller 11 is mounted.
2, the hanger roller 11 rolls on the inner surface side of the lower flange 9b of the I-shaped steel constituting the hanger rail 10. The suspension frame body 12 is formed in a substantially U-shaped cross section from both side portions 12a and a bottom portion 12b parallel to the I-shaped steel web 8, and a hanger roller 11 is axially mounted on the both side portions 12a so as to face each other. ing. The upper portion of the center column 5 is fixed to the bottom 12b of the suspension frame 12 with bolts and nuts. On both sides 12a of the suspension frame 12 , a part of a part facing the lower flange 9b of the I-shaped steel is cut out and a roller 13 is mounted on the lower part. 9b is slidably in contact with both side edges.
Rails 15 are provided on the floor surface 14 along the direction of movement of the center pillar 5, and guide the guide rollers 16 provided at the lower end of the center pillar 5 when the center pillar 5 moves. I have.

The rotating shaft of the hanger roller 11 is linked to an electric motor (not shown). The driving of the motor causes the hanger roller 11 to roll on the hanger rail 10 and the center post 5 to move. It is supposed to. At the upper and lower ends of the center post 5, fixing rods 17 are built-in so as to be able to protrude and retract. The center post 5 is stopped at a predetermined position, and the locking holes 1 provided in the floor surface 14 and the lintel portion 6 are provided.
The center pillar 5 is fixed by fitting a fixing rod into the center rod 8.

[0009] In the hanging portion of the center post 5, the front and rear directions of movement of the center post 5
A drive switch 19 for stopping driving of the center pillar 5 by detecting the inclination of the center pillar 5 is provided. The actuator 20 of the stop switch 19 is a support plate 2 provided on the upper portion of the front and rear ends in the moving direction of the middle pillar 5 of the side portion 12a of the suspension frame 12 on the indoor side.
1, the actuator 20 has a desired inclination and faces the inner surface of the upper flange 9a of the I-beam. Actuator 20 is always hanger rail 1
0, that is, so close as not to contact the inner surface of the I-section steel flange 9a, and in this state, the stop switch 19 is not operated. Since the suspension frame 12 is fixed to the center column 5, when the center column 5 swings back and forth in the movement direction, the suspension frame 12 also swings, and the swing of the suspension frame 12 In response to this, the actuator 20 abuts against the inner surface of the I-section steel flange 9, thereby activating the stop switch 19 and cutting off the power for driving the center column. Actuator - motor 20 on both sides of the lifting frame 12 of the center post 5, so are provided symmetrically shaped across the lifting frame 12, suitably stop switch 19 by the oscillation of the moving direction before and after the center post 5 Activate Note that the configuration of the stop switch 19 according to the present invention is not limited to these, and the point is that the stop switch of the center column moving drive that is always held in the non-operating state on the hanging portion of the center column 5. Provided that the stop switch is operated in response to the swing of the center pillar 5 in the forward and backward movement directions to cut off the power. In the embodiment, the floor rail 1 is used.
5, the stop switch 19 according to the present invention can, of course, be applied to an electric movable center pillar having no floor rail. in this case,
Only obstacle detection will be performed.

[0010] The operation of the electric movable center post constructed as described above will be described. Since the center pillar 5 is suspended and moves, if there is an obstacle in the movement path of the center pillar 5 during the movement of the center pillar 5, the center pillar 5 hits the obstacle and moves forward of the moving direction.
It will rock later . As the center column 5 swings, 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 the stop switch 1
Activate 9 to cut off the power to the hanger roller 11,
The movement of the center pillar 5 is stopped. If there is dust in the rail 15 on the floor, the guide roller 16 at the lower end of the center post 5 is caught, hindering downward movement.
Rock back and forth . Actuator with the swing of the center pillar 5
The stop switch 19 is actuated to turn off the power to the hanger roller 11, and the center post 5 Stop moving. Thus, the floor Les - to forcibly move the B-pillar 5 when the dust had clogged in Le 15, center post 5
No burden is placed on the drive mechanism of the camera.

[0011]

According to the present invention, there is provided an electric movable middle pillar which is movably suspended via a hanger roller on a hanger rail provided along an upper frame of a building opening. The suspension unit is provided with a stop switch for driving the movement of the center column, which is always kept in a non-operation state, and the stop switch is provided along the hanger rail.
It operates in response to forward and backward swing in the direction of movement of the moving middle pillar, and shuts off the power. Therefore, even if an obstacle hits any part of the middle pillar, the running of the middle pillar can be ensured. Can be stopped, and even when the middle pillar is caught by dust in the floor rail, the running of the middle pillar can be surely stopped. According to the second aspect of the present invention, the above means is achieved by using a hanger rail which is always at a vertical position with respect to the center pillar. The number of points can be reduced, and the stop switch can be reliably operated.

[Brief description of the drawings]

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

FIG. 2 is a schematic front view of an overhead head door with an 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 pillar according to the present invention as viewed from the inside of the opening.

FIG. 5 is a schematic cross-sectional view of a middle pillar showing a conventional safety device for an electric movable middle pillar.

[Explanation of symbols]

 5 Middle Pillar 10 Hanger Rail 11 Hanger Roller 19 Stop Switch for Middle Pillar Movement Drive 20 Actuator

Claims (2)

(57) [Claims] 1. A hanger provided along an upper frame of a building opening.
In a motor-driven movable pillar that is movably hung on a rail via a hanger roller, a suspending portion of the pillar is provided with a stop switch for the driving of the pillar that is always in a non-operating state. Provided,
The stop switch is operated in response to forward and backward swings in the direction of movement of the center pillar moving along the hanger rail to cut off the power, and the power is turned off. An actuator of the stop switch is provided near the hanger rail at the front and rear ends of the hanging portion in the moving direction , and when the center pillar swings back and forth in the moving direction. 2. The safety device according to claim 1, wherein the stop switch is operated by a contact of the rotor with the hanger rail.