JPS63284385A - Safety apparatus of automatic door - 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 [Field of Industrial Application] The present invention relates to a safety device provided in an automatic door that opens and closes an entrance/exit passage.

[Prior Art and Problems to be Solved by the Invention] In most conventional automatic doors, the left and right sides open and close at the same time.

In recent years, for reasons such as energy conservation, in places where there are few people going in and out, doors are being opened (the opening is halved). One such option is to open and close the left and right doors separately. However, For this type of safety switch, it is not possible to use the transmissive light switch that has been commonly used in the past.Therefore, reflective type and contact type switches are used.However, with this reflective type, the door A dead center is likely to be created on the opening/closing line of the switch, and adjustment is difficult.Contact type switches also have disadvantages such as being dangerous to women and children because they detect contact.

[Means for Solving the Problems] In view of the above-mentioned circumstances, the present invention was invented in order to solve the above-mentioned inconvenient drawbacks. The safety sensor's light beam switch detection device is placed opposite the safety sensor, and the safety sensor is equipped with a reed switch, which is connected to a control device that controls the left and right motors to open and close the door independently. This is a safety device for an automatic door, which controls the opening and closing of the door on both the left and right sides, but uses one optical switch, and is provided for the purpose of improving workability and cost.

[Embodiment] Next, an embodiment of the automatic door safety device according to the present invention will be described based on the drawings.

Reference numeral 1 designates a safety sensor having two independent output systems, and is equipped with a relay 2, and is installed opposite to the left and right in the path of an automatic door opening/closing section that opens and closes a detection section 3 using a light beam switch of the safety sensor 1. . Further, the safety sensor 1 is connected to either one of the left and right control devices 6, 6a connected via a power source 4 and a switch 5.

The control devices 6 and 6a are equipped with relays 2 and 2, respectively, including a safety sensor reed switch LS-5, an open side reed switch LS-3, and a fine brake switch LS-2.
, a start switch LS-4 is provided, and a motor 7.7a is provided.
The motors 7, 7a are controlled by the control device.

[Function] As described above, the basic operation of the present invention is to open and close an automatic door from the closed position as shown in FIG. The sensor LS-5 is turned on, opened, and then opened at a constant speed, and when it approaches the closed position, the open side reed switch LS-3 is turned on, and the speed gradually decreases and operates in a step-like manner as shown in the drawing. and open it. Next, to change from opening to closing, when the controller moves in the closing direction based on the closing signal, it will close at a constant speed, and when it approaches closing, the fine brake reed switch LS-2 will turn on and the brake will act, causing the brake to move stepwise. Gradually the third switch for the safety sensor turns OFF and the closing side reed switch LS-
1 is turned ON, and it closes and stops when a stop signal is sent from the control device. This is the basic operation.

Next, when the safety device is placed in the entrance/exit passage in the above operation, it will operate in the closing direction when there is a close signal from the control device 6゜6a when closing as described above, but at this time, the detection device 3 detects a fault. Then, relay 2 is activated, relay 2a is turned on, and safety sensor reed switch L is activated.
Since S-5 is ON, the control device 6 operates the motor 7 to rotate in the reverse direction and operate in the opening direction. (If one door is closed, the reed switch LS-5 on the closed side
is off, so the door on the closed side will not operate. )
When the operation in the opening direction of B comes close to the opening position, the opening side reed switch LS-3 is turned on, performs the basic operation described above, and opens. Next, if there is no obstruction during the closing operation, the door is closed using the basic operation as described above.

That is, one optical switch for detection is used in common for both.

[Effects] As described above, the present invention has a light beam switch detection device of a safety sensor having two independent outputs facing the passageway of an automatic door, and a reed switch is provided on the safety sensor. This is an automatic door safety device that is characterized by connecting the motor that opens and closes the door to a control device that controls the left and right doors to open independently, and controls the left and right doors separately using a single light switch. , unlike the conventional reflective type, it does not require two units, making it cheaper, and since there is only one unit, there is no need to consider interference between switches, making it easier to work with, and since the optical switch is a transmission type, I can't make a dead center. Further, there are effects such as easy adjustment.

[Brief explanation of the drawing]

The drawings show an embodiment of the automatic door safety device according to the present invention. Fig. 1 is a circuit diagram of the invention, Fig. 2 is an explanatory diagram of the basic opening/closing operation, and Fig. 3 is an example of the use of the safety device. FIG. 4 is an explanatory diagram of the opening and closing operation. 1° Safety sensor 2 Relay 3...Detection section
4...Power source 5...Switch 6, 6a...Control device 7,7a...Motor LS-1...Closing side reed switch LS-2...Fine brake reed switch LS-3...Opening side Reed switch LS-4... Start switch Figure 2 Figure y

Claims (1)

[Claims] A safety sensor optical switch detection device with two independent output systems is placed facing the automatic door passage, and the safety sensor is equipped with a reed switch to open the left and right motors that open and close the door independently. An automatic door safety device characterized by being connected to a control device that controls the