JPH06330683A - Control method of sheet shutter having shutters arranged side by side and device thereof - Google Patents

Abstract

PURPOSE:To enable a sheet shutter to act only when no person exists at the upper limit position of a shutter so as to improve safety and reliability by providing a limit switch, a changeover switch, and a person detecting sensor on a shutter driving part. CONSTITUTION:When a disc 12b contacts with an upper limit switch 14, it also contacts with a limit switch 16 for interlocking. The switch 16 is connected to the control part 10 of a sheet shutter 4, so as to control the shutter 4 to open or close. The shutter 4 is controlled so that it can be brought down only when a shutter 3 is positioned on the upper limit and in the perfect opening state, and a motor 8 is operated so as to bring down the shutter 4 at contacting the disc 12b with the switch 16. Even if a sensor in the vicinity of an opening part 1 detects approach of a person or a vehicle, the shutter 4 is not brought down when the shutter 3 is not positioned on the upper limit. When the shutter 3 is positioned on the upper limit and in the perfect opening state, the shutter 4 is brought down, but the shutter 4 is elevated so as to open when either one of sensors 18a, 18b on the outside or the inside detects a person or a vehicle entering the opening part 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control method and a control device for safely opening and closing a sheet shutter provided with a steel slat type shutter.

[0002]

2. Description of the Related Art A screen with printed advertisements, pictures for decoration, pictures, characters, etc. is provided close to the front or back of a shutter that can be opened and closed provided in an opening of a building. There is known a "shutter with a screen" that is configured to be freely expandable when the shutter is closed (Jitsuhei 3-36696, Jitsuhei 3-36697, Jitsuhei 3-36698). The screen is composed of a thin sheet, so that if the screen is exposed to wind pressure or if a tangible object leans against it, it will bend and can be supported by a shutter.

Therefore, the screen is controlled to descend only when the shutter is present in the opening, and when the screen is raised, it is controlled to rise before the shutter.
The shutter must be located at the position (height) where the screen exists. The sheet shutter targeted by the present invention is different from the screen shutter, and the sheet shutter is always closed,
It is designed to rise and open only when people or vehicles pass through it. The shutter is attached to a steel slat type shutter, and since the shutter functions as a crime prevention purpose, it is only opened once in the morning and evening and is always open.

Therefore, when a person or a vehicle passes, the above-mentioned sheet shutter which is always closed is automatically opened and closed at a high speed, but when the shutter is rising or the shutter is stopped halfway. In some cases, people or cars pass by. That is, when entering the opening from the seat shutter side (inside), the shadow of the closed sheet shutter cannot be seen and the shutter status cannot be confirmed. If the seat shutter automatically opens, the opening will be completely opened. Believe it or not, there is a risk of colliding with a shutter that is still closed.

This is because even if the shutter is not opened in advance, or even if the switch is operated to open the shutter, the sheet shutter opens at high speed, so the shutter is in the middle of opening. It may enter. Many vehicles passing through this opening have a forklift, and the forklift has a fork for loading luggage in the front, but the sensor provided at the opening makes it difficult to detect this fork, so It is arranged to detect.

Therefore, in order to detect the area excluding the area near the opening corresponding to the length of the fork projecting forward, the seat shutter opens before the fork hits the seat shutter. If a forklift stops at the opening or the traveling speed is extremely reduced at the opening, the seat shutter may be lowered and pinched.

[0007]

As described above, when the sheet shutter is provided side by side, the opening and closing operations of the sheet shutter and the shutter have the above problems. The problems to be solved by the present invention are these problems,
Seat shutter is safe with a very simple control means,
(EN) Provided are a control method and a control device capable of surely opening and closing.

[0008]

[Means for Solving the Problems] A seat shutter is a device for shutting off indoors and outdoors to prevent outflow of cold air and warm air, and is an auxiliary device of a steel slat type shutter. The seat shutter is closed when the shutter is opened, and the seat shutter is temporarily opened only when a person or a car comes in or out. Since the function of the sheet shutter is lost if the shutter is closed, the present invention enables opening / closing only when the shutter is raised and in the open state so that the sheet shutter does not descend at any time.

For safety, the seat shutter cannot be lowered even when the shutter is in a position other than the upper limit, for example, in the half-opened state or in operation, and the shutter is controlled to stop at the upper limit. However, limiting the lowering of the sheet shutter only to the case where the shutter is at the upper limit may cause inconvenience. Therefore, control is performed so that the sheet shutter can be lowered and closed regardless of the position of the shutter as necessary. Hereinafter, embodiments according to the present invention will be described in detail with reference to the drawings.

[0010]

FIG. 1 is a schematic front view of a shutter device provided with a sheet shutter. Guide rails 2 and 2 are attached to both sides of the opening 1, and the seat shutter and the shutter can be moved up and down along the guide rails 2 and 2 to open and close the opening 1. As shown in the cross section in FIG. 2, the shutter 3 is arranged outside the sheet shutter 4, and the shutter 3 is arranged on the drum 5 and the sheet shutter 4
Are wound around the drum 6, respectively. In addition, these drums 5 and 6 are rotationally driven by motors 7 and 8, the shutter 3 can be opened and closed by operating the push button switch 9, and the sheet shutter 4 by operating the control unit 10.

By the way, the seat shutter of the present invention is held at the upper limit and is controlled so that it can be lowered only when the shutter is located at the upper limit and the opening 1 is opened. FIG. 3 shows a concrete example of the above. FIG. 8A is a control block diagram of the entire shutter device, and b shows a specific example of the shutter detection unit. The shaft 11 shown in the shutter detection section rotates in conjunction with the motor 7 that opens and closes the shutter 3, and the shaft 11 has 2
The individual disks 12a and 12b are fixed at a predetermined interval.

Since the screw 13 is formed on the shaft 11, the positions of the disks 12a and 12b can be freely adjusted, and screws are used to fix them at appropriate positions. Limit switches are arranged above and below the shaft 11, and when the shaft 11 rotates, the limit switches are moved in the axial direction through the screw 13 and rotate with the shaft 12a, 12a.
b contacts these limit switches. In the figure, reference numeral 14 is an upper limit switch for detecting the upper limit position of the shutter, and 15 is a lower limit switch for detecting the lower limit position. The 16 limit switches are interlock limit switches for transmitting signals to the sheet shutter control section.

By the way, when the push button switch 9 is operated and the shutter 3 is lowered, the shaft 11 is rotated in conjunction with the rotation of the motor 7, and when the disk 12a comes into contact with the lower limit switch 15, the motor 7 is stopped. To do. On the contrary, when the shutter 3 rises and the disk 12b moves with the rotation of the shaft 11 and comes into contact with the upper limit switch 14, the motor 7 stops. Therefore, the shutter 3 can only be raised after the disc 12a contacts the lower limit switch 15, and the shutter 3 can only be lowered after the disc 12b contacts the upper limit switch 14.

When the disk 12b further contacts the upper limit switch 14, it also contacts the interlock limit switch 16. The interlock limit switch 16 is connected to the control unit 10 of the sheet shutter 4 and controls the opening / closing movement of the sheet shutter 4. The seat shutter 4 is controlled so that it can descend only when the shutter 3 is at the upper limit and is in the fully open state. When the disk 12b comes into contact with the interlock limit switch 16, the seat shutter 4 is moved. The motor 8 operates so that the shutter 4 can be lowered.

Therefore, even if the sensor arranged near the opening 1 detects the approach of a person or a vehicle, the seat shutter 4 cannot descend if the shutter 3 is not at the upper limit. When the shutter 3 is located at the upper limit and is in the fully opened state, the seat shutter 4 is lowered, and when a person or a vehicle approaches the opening 1, it is automatically raised and opened. As shown in FIG. 2, sensors 18a and 18b are provided on the outer side and the inner side of the opening 1, respectively, and one of the sensors 18a and 18b detects a person or a vehicle entering the opening 1. Then, the sheet shutter 4 rises and opens.

Here, the detection area of the sensor 18 is not directly below the opening 1 but is a region apart from the opening 1 to some extent. This is because the fork protruding forward of the forklift is the seat shutter 4 as in the conventional case. The purpose of this is to detect the vehicle body so that the seat shutter 4 is opened before the contact, and in the case of a general vehicle, the vehicle approaching the opening 1 can be forwarded so that the vehicle can pass without pausing before the opening 1. Is being detected. Then, when the moving body such as a person or a car passes through the opening portion 1 of the opened sheet shutter 4 and passes through the detection area of the sensor 18 on the opposite side, the sheet shutter 4 descends to close the opening portion 1.

However, the opening / closing movement of the sheet shutter 4 is set to a semi-automatic state in which it is raised by operating a push button or the like without using the sensor 18 and is lowered at the upper limit after a predetermined stop time has elapsed. If it is, or even in the case of the fully automatic state, the seat shutter 4 descends if it retreats after passing through the detection area of the sensor 18 on the opposite side (exit side) and is directly below the opening 1. However, according to the present invention, in order to prevent the drop, the photoelectric tube 19 is attached to the opening 1 as another detection means. Therefore, the photoelectric tube 19 prevents the sheet shutter 4 from being lowered while the moving body is present in the opening 1, and when the moving body is present while the sheet shutter 4 is being lowered. It is controlled to rise.
However, if the opening / closing movement of the sheet shutter 4 is limited only when the shutter 3 is at the upper limit position, an operational inconvenience may occur.

For example, in the case of strong wind and rain, unless the seat shutter 4 descends only after the shutter 3 is completely opened, the shutter 3 is raised and the interior of the building is moved until the seat shutter 4 descends. Wind and rain invade. Therefore, in a special case, the shutter 3 is closed, or even if the shutter 3 is located in the middle, the sheet shutter 4
Can be lowered to close the opening 1. This control device is an interlock changeover switch 17 provided on the control panel 10. If the interlock switch 17 is turned off, the sheet shutter 4 can be opened and closed regardless of the position of the shutter 3.

By the way, the control device shown in FIG. 3 is only one specific example showing the mechanical structure, and when both the disks 12a and 12b are screwed into the screw 13 so as not to rotate and the shaft 11 rotates. The disks 12a and 12b may be moved along the axis 11. Further, the fact that the shutter is located at the upper limit may be directly detected by a detecting means such as a sensor. FIG. 4 shows another embodiment in which the shutter 3 and the sheet shutter 4 are provided side by side, and this device is a case where the sheet shutter 4 is provided side by side inside the opening of the already installed shutter 3.

Even in such a case, the control method and control device of the present invention can be constructed in the same manner as in the above-mentioned embodiment. As described above, the present invention enables the opening and closing of the sheet shutter only when the shutter is at the upper limit position, and in a special case, the control circuit is released to open and close the sheet shutter regardless of the position of the shutter. It is configured so that it can be operated, and the following effects can be obtained.

[0021]

The present invention relates to a method and apparatus for controlling the opening / closing movement of a sheet shutter, but the sheet shutter cannot be lowered unless it is detected that the shutter is at the upper limit position. Therefore, the seat shutter does not come down while the shutter is being operated, and therefore, even if a person or a vehicle passes by while the shutter is moving, there is a risk that the seat shutter will be caught in the descending seat shutter. There is no. Also, it does not collide with the shutter. Besides, the control means that can open and close the sheet shutter when the upper limit of the shutter is detected is not only highly safe, but also the control means is simple and highly reliable.

Further, since the present invention is provided with the interlock switch of the above-mentioned control circuit, the opening / closing movement of the sheet shutter can be performed irrespective of the position of the shutter by switching the switch in a special case. On the other hand, the control method and the control device of the present invention are not limited to the case where the sheet shutter is integrated with the shutter, but also when the sheet shutter is separately attached to the existing shutter,
It can be configured in the same way.

[Brief description of drawings]

FIG. 1 is a front view of a shutter device provided with a sheet shutter.

FIG. 2 is a sectional view of a shutter device provided with a sheet shutter.

FIG. 3 is an embodiment of a control device according to the present invention.

FIG. 4 is a sectional view of a shutter device provided with a sheet shutter.

[Explanation of symbols]

 1 Opening 2 Guide rail 3 Shutter 4 Seat shutter 5 Drum 6 Drum 7 Motor 8 Motor 9 Pushbutton switch 10 Control unit 11 Axis 12 Disk 13 Screw 14 Upper limit switch 15 Lower limit switch 16 Interlock limit switch 17 Interlock changeover Switch 18 Sensor 19 Phototube

Claims (3)

[Claims] 1. In a device having a shutter and a sheet shutter provided in an opening, the seat shutter held (stopped) at the upper limit is lowered when the shutter is positioned at the upper limit and stopped in a fully opened state, and the opening is opened. When a moving body such as a person or a car approaches the opening, the sensor detects the presence of those people or the car and opens the seat shutter.When the vehicle passes the opening, the seat shutter is closed. In addition, when there is a person or car in the opening, the presence of the person or car is detected to prevent the seat shutter from falling, and in special cases, the interlock switch of the control circuit is switched. A method for controlling a seat shutter with a shutter, which allows opening and closing of the seat shutter regardless of the position of the shutter. 2. A device in which a shutter and a sheet shutter are provided side by side in an opening, and a detection means is provided for detecting that the shutter is located at an upper limit and is in a fully opened state,
A control unit for the sheet shutter that receives a signal from the detection unit is provided, and the control unit configures a circuit so that the seat shutter can be opened and closed only when a signal confirming the upper limit position of the shutter is received. Further, in a special case, a control device for a sheet shutter provided with a shutter, wherein an interlock changeover switch is provided in the control circuit so that the seat shutter can be opened and closed regardless of the position of the shutter. 3. A circuit configured to provide means for detecting the presence of a person or a vehicle in the opening, and to prevent the seat shutter from descending when the person or the vehicle is present in the opening. A sheet shutter control device provided with the shutter according to Item 2.