JPS62225684A - Frontage open-close machine for shutter, blind, etc. having safety stopping function - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Object of the Invention (Field of Industrial Application) The present invention relates to a frontage opening/closing machine for shutters, blinds, etc., which is attached to the frontage of a building.

(Prior Art) Conventionally, frontage opening/closing devices such as shutters and blinds have generally been equipped with magnetic contactors or joints. ! It is opened and closed by a shelving device using a container, and due to its structure, only simple control is possible.

Therefore, safety stop devices required by users include one that detects changes in current value or capacitor voltage due to changes in motor load torque, and one that stops using a contact signal from a tape switch attached to the frontage opening/closing member. Sensors using various sensors such as ultrasonic waves, radio waves, and light sensors are used.

(Problems to be Solved by the Invention) As described above, all of the conventional safety stop devices described above are completely different devices from the control device of a normal frontage opening/closing machine, and each is housed in its own dedicated control box. It is an expensive piece of equipment both in terms of price and installation cost, and currently it is not used in most frontage opening/closing machines.

Structure of the Invention (Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention provides a frontage opening/closing member 1 that is opened and closed by the rotation of a motor 2, a drive circuit 12 that drives and stops the motor 2, , a detection means for detecting the moving speed or acceleration of the frontage opening/closing member 1, a comparison means for comparing the signal from the detection means with a preset speed or acceleration, and an actual speed as a result of the comparison by the comparison means. Alternatively, when the acceleration is different from a preset speed or acceleration, the motor 2 is controlled to be stopped.

(Function) When the motor is driven by the drive circuit and the frontage opening/closing member is moved, the moving speed or acceleration is detected by the detection means. The comparison means compares this detection signal with a preset speed or acceleration, and if the actual speed or acceleration differs from the preset speed or acceleration as a result of the comparison,
The motor is stopped by the control means, and the frontage opening/closing member is stopped.

(Example) Hereinafter, an example in which the present invention is embodied in an electric shutter attached to the frontage of a building, etc. will be described with reference to the drawings.

A slat curtain 1 serving as a frontage opening/closing member is wound up and rewound by a motor 2 via a rotation transmission mechanism 3. A potentiometer 6 is attached to the rotating shaft 4 of the motor 2 via a gear train 5 to detect the amount of rotation of the same shaft 40.

An acceleration detector 7 that detects the acceleration of the slat curtain 1 based on a signal from the potentiometer 6, and a speed detector 8 that detects the moving speed of the slat curtain 1 based on a signal from the potentiometer 6 are connected to the potentiometer 6. ing. Said potentiometer 6
, an acceleration detector 7, and a speed detector 8 constitute a detection means.

A central processing unit (CPU) 9 constituting comparison means and control means is connected to the acceleration detector 7 and speed detector 8, and a read only memory (ROM) 10 storing a program is connected to the CPU 9. Along with
Random access memory as setting unit for upper and lower limit stop position, acceleration and speed range of slat curtain 1
(RAM) 11 is connected.

Further, a drive circuit 12 for driving and stopping the motor 2 is connected to the CPU 9, and when the detection signal from the potentiometer 6 reaches preset upper limit stop position data and lower limit stop position data, the CPU 9 A stop command signal for stopping the slat curtain 1 at the upper limit stop position iup and the lower limit stop position iDP is output to the next stage drive circuit 12. Further, when the acceleration detected by the acceleration detector 7 exceeds a preset acceleration range, the CPU 9 outputs a stop command signal to the next-stage drive circuit 12. Further, when the speed detected by the speed detector 8 exceeds a preset speed range, the CPU 9 outputs a stop command signal to the next stage drive circuit 12.

Further, the CPU 9 is configured to raise the slat curtain 1;
Three switches U for stopping and lowering operations,
A switch box 13 as an operation section having S and D is connected.

Next, the safe stopping operation of the slat curtain 1 using the acceleration detector 7 and the speed detector 8 will be explained.

First, to explain the acceleration detector 7, when moving the slat curtain l, its moving speed is a moving speed that is balanced between the torque generated by the motor 2, the weight of the slat curtain l, and the sliding resistance of the rotation transmission mechanism 3. , winding,
The movement speed during rewinding is almost constant. If an obstacle hits the slat curtain 1 while driving,
When the drain plate 1a at the bottom of the slat curtain 10 hits the entrance (path shown in the figure) of the storage case due to a change in the diameter of the slat curtain 10, the moving speed of the slat curtain 1 suddenly changes. The CPU 9 compares the detected value at this time by the acceleration detector 7 with an acceleration range preset in the RAMII, and immediately outputs a stop command signal when the detected value exceeds the set acceleration range, and receives this. The motor 2 and the slat curtain 1 are stopped by the drive circuit 12.

Next, the safe stopping operation of the slant curtain 1 by the speed detector 8 will be explained.

As described above, the moving speed of the slat curtain 1 is almost constant during winding and unwinding of the slat curtain 1. Therefore, during use, if the output of the motor 2 decreases sequentially or over time, the transmission efficiency of the rotation transmission mechanism 3 decreases, or the guide rails (shown in the diagram) on both sides of the slat curtain 1 deform. , its moving speed changes.

The CPU 9 uses the detected value at this time by the speed detector 8 and R
It compares the speed range preset in AM11, and if the detected value exceeds the set speed range, it outputs a stop command signal, and upon receiving this, the motor 2 and the slat curtain 1 are stopped by the drive circuit 12. .

Note that the detection means, comparison means, setting section, acceleration detector 7 and its setting section, speed detector 8 and its setting section, and signal processing method in the drive circuit 12 used in the above embodiments may also be analog-based. A digital method is also possible, and as the detection means, in addition to the potentiometer 6, various sensors such as a rotary encoder for detecting absolute and relative positions can be used.

Also, in the above embodiment, the electric shutter was used, but
It may be applied to blinds, automatic doors, sliding doors, gates, etc.

Effects of the Invention As detailed above, the present invention stops the frontage opening/closing member based on the amount of change in the signal from the detection means, so unlike the conventional method, an expensive safety stop device is not required and safety is improved. It has the excellent effect of allowing door opening/closing devices such as shutters and blinds with a stop function to be manufactured easily and inexpensively.

[Brief explanation of drawings]

The figure is an explanatory diagram showing an embodiment of the present invention as a shutter.

Claims (1)

[Claims] 1. A frontage opening/closing member (1) that is opened and closed by the rotation of a motor (2), and a drive circuit (12) that drives and stops the motor (2).
a detection means for detecting the moving speed or acceleration of the frontage opening/closing member (1); a comparison means for comparing the signal from the detection means with a preset speed or acceleration; and a comparison result by the comparison means. Shutters and blinds equipped with a safety stop function, characterized in that they are configured with a control means that controls the motor (2) to be stopped when the actual speed or acceleration differs from the preset speed or acceleration. etc. Frontage opening/closing machine. 2. The safety stop function according to claim 1, wherein the detection means includes a potentiometer (6) and an acceleration detector (7) that outputs a stop command signal based on a signal change from the potentiometer (6). shutter with
Frontage opening/closing machine for blinds, etc. 3. The safety stop function according to claim 1, wherein the detection means includes a potentiometer (6) and a speed detector (8) that outputs a stop command signal based on a signal change from the potentiometer (6). Frontage opening/closing machine for shutters, blinds, etc.