JPH0336114B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic sliding door that opens and closes the sliding door using the driving force of a linear induction motor.

Conventionally, practical mechanisms for automatically opening/closing sliding doors include those that convert the rotation of a motor into linear motion via a belt, chain, or rack, and those that use a hydraulic cylinder. However, these devices generally have complex mechanisms and generate noise due to friction when opening and closing, are prone to failure, and require considerable force to open and close manually in emergencies, so the mechanical connection with the drive source is disconnected. There were some drawbacks, such as the need for special operations.

The present invention has been made in view of the above points, and uses a linear induction motor to directly drive the sliding door to open and close.It is noiseless, less likely to malfunction, and can be opened and closed easily by hand even in emergencies. It provides a sliding door. SUMMARY OF THE INVENTION An object of the present invention is to provide an automatic opening/closing sliding door that allows opening/closing of the sliding door and confirmation of the opening/closing state of the sliding door by remote control. A third object of the present invention is to provide a sliding door that automatically opens and closes depending on indoor and outdoor environmental conditions.

An embodiment of the present invention will be described based on the drawings. In FIG. 1, a top 1a, side frames 1b,
A single-opening sliding door 2 is fitted in an openable/closable manner into an outer frame 1 constituted by a threshold 1c and a threshold 1d. To explain this in detail, in Fig. 2, a rail 3b is laid along the top surface of the tip of a rail joint 3a that protrudes horizontally from the lower side of the seam 1a and extends over almost the entire length of the seam 1a. A convex portion 4 is provided on the threshold 1d over almost the entire length. On the other hand, a hanging metal fitting 2a having a hook-shaped cross section attached to the upper part of the sliding door 2 is provided with door wheels 2b, 2b, so that the groove 2c provided at the lower part of the sliding door 2 can fit into the convex part 4 and Door wheel 2b, 2
b is configured to run on rails 3b. On the upper surface of the hanging fitting 2a, a secondary iron core 5a made of laminated silicon steel plates, etc., and a flat secondary conductor 5b made of copper, aluminum, etc. are arranged horizontally over almost the entire width of the sliding door 2. has been done. On the other hand, primary windings 6a and 6b are arranged in the Kamai 1a at positions facing the secondary conductor 5b with a small gap within the opening/closing movement range of the sliding door 2, and Regardless of the primary winding 6
The arrangement is such that either one of a and 6b always faces the secondary conductor 5b. Primary winding 6a,
Reference numeral 6b is an iron core made of laminated silicon steel plates or the like with three-phase windings, and is fixed to the seam 1a by a support 6c. It is desirable that the gap between the primary windings 6a, 6b and the secondary conductor 5b be as small as possible so that they do not come into contact with each other, since this increases the driving force. Therefore, in this embodiment, in order to increase the positional accuracy of the secondary conductor 5b, the sliding door 2 is suspended from the top. It is also possible to have a structure in which the vehicle runs on the vehicle. In addition, the primary windings 6a and 6b are arranged at the threshold 1d, and the secondary iron core 5a and the secondary conductor 5
It is also possible to provide b at the bottom of the sliding door 2,
In this case, it is preferable to have a structure in which the sliding door 2 runs on the threshold 1d because it can be opened and closed smoothly. Furthermore, proximity switches 7a and 7b are provided on the rail stand 3a, and are activated when the lower end of the hanging fitting 2a approaches the lower end of the hook 1a. The proximity switches 7b are arranged to operate when the other primary winding 6b faces the respective secondary conductor 5b. Therefore, if the respective primary windings 6a, 6b are energized when the respective proximity switches 7a, 7b are activated, the sliding door 2 will be continuously moved to open and close by receiving the driving force. Furthermore, when both primary windings 6a, 6b are not excited, the sliding door 2 does not receive any driving force and is not mechanically connected to the primary windings 6a, 6b, etc., so it cannot be easily opened and closed manually. can. In this embodiment, two primary windings are used, but the same applies if three or more primary windings are used, and an appropriate number of proximity switches may be provided to sequentially switch them. Further, a secondary winding may be used instead of the secondary conductor, and a photoelectric switch, reed switch, micro switch, etc. may be used instead of the proximity switch.

Next, permanent detection magnets 8a and 8b are provided on the rigid frames 2e and 2d of the sliding door 2, and correspondingly, permanent magnets for detection are provided on the side frames 1c and 1b when the sliding door 2 is in the open or closed position. An open side reed switch 9a and a close side reed switch 9b are provided which operate in response to the signals 8a and 8b. In addition, a locking device 1 is provided in the middle of each of the rigid frame 2d and the side frame 1b.
0 is attached, and a locking device 10 is attached to the side frame 1b.
Micro switch 1 that operates in the locked state
0a is placed. To explain this in detail, in FIG. 3, a latch 11 having a hook portion 11a and a slope portion 11b formed at the top of the tip protrudes approximately horizontally from a rectangular hole 2f provided in the middle side of the rigid frame 2d. The rear end of the latch 11 has a pin 10b.
It is rotatably supported by a spring 10c, and its tip is urged upward by a spring 10c. The pin 10b penetrates the solid frame 2d and projects to the front of the sliding door 2, and a lever 12 is fixed to the tip of the pin 10b, so that as the lever 12 rotates, the latch 11 rotates by a certain angle. has been done. On the other hand, the side frame 1b is provided with a metal fitting entry hole 1e corresponding to the protruding position of the latch 11, and the lower end is formed in a slope shape above the metal fitting insertion hole 1e, so that when the latch fitting 11 enters, the hook part 11a is formed. An unlocking electromagnet 10e for attracting the latch 11 and releasing the above-described engagement is provided below the latch piece 10d. In addition, when the latch 11 is engaged with the latch piece 10d (ie, locked state), the micro switch 10 is pushed upward by the hook portion 11a to operate.
a is deployed. Therefore, in the locked state shown in FIG. 3, by energizing the unlocking electromagnet 10e or pulling the lever 12 to the left, the latch 11 and the latch piece 10d are disengaged, and the sliding door 2 is released.
can be moved freely. Further, locking is automatically performed when the latch 11 enters the metal fitting insertion hole 1e. In this embodiment, reed switches 9a and 9b were used as detection switches for opening/closing confirmation, but these may be proximity switches, photoelectric switches, reed switches, micro switches, etc., and may be made of suitable material depending on the type of these switches. , it is sufficient to select an actuating piece having a shape of .

Next, to explain the control circuit for controlling this automatic opening/closing sliding door, in FIG. It is connected to the input interface section 13 for conversion,
A large number of similar switches 13a of other automatic opening/closing sliding doors are connected to the input interface section 13. In addition, a large number of sensors 14a for detecting the indoor environment such as temperature, humidity, gas leakage, etc., and the outdoor environment such as the presence or absence of rain, wind speed, brightness, etc. are used to convert the sensor into a digital signal according to the detected amount of each sensor 14a. It is connected to a sensor interface section 14, and both of these interface sections 13 and 14 are connected to a central processing section 15 composed of a microprocessor or the like. The output interface section 16 is for receiving commands from the central processing section 15 and sending signals to various signal lines; 16a is a sliding door opening command signal line; 16b is a sliding door command signal line;
6c is an unlock command signal line, and 16d is a command signal line for other automatic opening/closing sliding doors. Also, storage unit 1
7 shows the indoor and outdoor environmental conditions and each switch 9a, 9.
Programs prepared in advance are stored in order to take necessary measures for environmental hygiene or flood prevention depending on the status of terminals b, 10a, and 13a, the current time, or conditions input from the keyboard 18.
The display unit 19 displays input conditions from the keyboard 18,
It displays the indoor and outdoor environmental conditions, the status of the sliding door, etc., and issues an alarm in the event of an abnormality. Proximity switch 7
a and 7b are connected to inhibit elements 19a and 19b to inhibit each other, and are input to an AND element 20. Also, the sliding door opening/closing command signal line 16
a, 16b are each input to an AND element 20, and the ignition circuit 21 selected according to these input conditions is operated, the bidirectional thyristor 22 is turned on, and the primary windings 6a, 6b are excited. has been done. That is, proximity switch 7
Either one of the primary windings 6a and 6b is selected by the operation of a and 7b, and the sliding door opening/closing signal line 16
The opening/closing direction of the sliding door 2 is selected by switching the two phases from the three-phase AC power supply 23 according to the signals a and 16b. Further, the unlocking command signal line 16c is configured to turn on the bidirectional thyristor 22j via the ignition circuit 21j and excite the unlocking electromagnet 10e. In this embodiment, the primary windings 6a, 6
The selection of b and the switching of two phases from the three-phase AC power supply 23 are performed by logical operations using the AND element 20. A program for this purpose is stored in advance in the storage unit 17, and the central processing unit 1
It is also possible to perform calculations using 8. Furthermore, although the bidirectional thyristor 22 is used as the power switching element, it is also possible to use an electromagnetic switch, and if the primary windings 6a and 6b are two-phase windings, the circuit may be modified as appropriate. This allows for adaptation.

In the automatic opening/closing sliding door configured as described above, in the fully open and locked state shown in FIG.
It is in the OFF state, and the user can appropriately know this from the display section 19. Next, if the various conditions match the conditions programmed in advance and stored in the storage unit 17 for opening the sliding door 2, the central processing unit 15 determines that the current sliding door 2 is fully closed and locked. After checking, the unlocking electromagnet 10e is first excited to attract the latch 11 and disengage it from the latch piece 10d. Then, the micro switch 10a becomes OFF, and after confirming this, a signal is sent to the sliding door opening command signal line 16a, and the primary windings 6b and 6a are sequentially excited to drive the sliding door 2 to fully open it. At this time, the closed side reed switch 9b is in the OFF state and the open side reed switch 9a is in the ON state, so when the central processing unit 15 confirms this, it turns the signal line 16a and the electromagnet 10e into the OFF state. Also sliding door 2
When the conditions for closing are met, the central processing unit 15 confirms that the sliding door is fully open, and outputs a signal to the sliding door close command signal line 16b to drive the sliding door 2 in the opposite direction to bring it into the fully closed state. In this case, the lock is automatically locked, the micro switch 10a and the closing reed switch 9b are in the ON state, and the opening reed switch 9 is in the ON state.
a is turned OFF, and the central processing unit 15 confirms this and turns the signal line 16b OFF.
In each of the above states, if each switch does not show a normal operating state, repeat the operation to reach that state by reversing the opening/closing direction of the sliding door 2, and make sure that each switch does not show a normal operating state. If not, the display section 19 will display a message to that effect and issue a warning. The above is an example of automatic opening/closing of a sliding door based on a program.
By operating 8, the sliding door 2 can be opened and closed as appropriate. In addition, in the event of a power outage or emergency, the sliding door 2 can be opened by operating the lever 12.
can be easily opened and closed manually. Further, the opening side reed switch 9a can be omitted and an appropriate timer signal can be used instead, or by appropriately providing a switch for detecting the opening degree of the sliding door 2, the sliding door 2 can be automatically opened appropriately. It is also possible to do so.

As described above, the present invention installs a secondary conductor and a secondary core horizontally at the top or bottom of a sliding door, and arranges a plurality of primary windings in the outer frame within the range of opening and closing movement of the sliding door. so that at least one primary winding always faces the secondary conductor, thereby forming a linear induction motor together with the secondary conductor and the secondary core, and the opening/closing position of the sliding door is determined on the outer frame. One or more position detection switches for detecting and sensors for detecting indoor and outdoor environmental conditions are provided, and the primary winding is sequentially switched and energized by the sensor and the position detection switch to detect indoor and outdoor environmental conditions. Since we decided to open and close the sliding door automatically depending on the conditions, there is no noise during automatic opening and closing, it is less likely to malfunction, and it can be easily opened and closed manually even in emergencies. In particular, since a plurality of primary windings are sequentially switched and excited, the exciting current is always effectively converted into driving force, high efficiency can be obtained, and there is no risk of burnout of the primary windings. In addition, automatic opening and closing is possible by remote control, and by installing an appropriate detection switch, the opening and closing status can be confirmed.
Furthermore, by providing a locking device and a detection switch for locking confirmation, it becomes possible to fully automatically control entrance doors, windows, rain shutters, etc. in buildings.

[Brief explanation of the drawing]

The drawings show embodiments of the present invention, and FIG. 1 is a front view of an automatic opening/closing sliding door according to the present invention, FIG. 2 is a cross-sectional view of FIG. FIG. 4 is a block diagram showing a control circuit for controlling the automatic opening/closing sliding door. 1...Outer frame, 2...Sliding door, 5...Linear induction motor, 5a...Secondary core, 5b...Secondary conductor,
6a, 6b...Primary winding, 7a, 7b...Proximity switch (position detection switch), 8a, 8b...Permanent magnet for detection (operating piece for opening/closing confirmation), 10...Lock device, 10a...Micro switch (detection switch for lock confirmation).

Claims (1)

[Claims] 1. A secondary conductor and a secondary core are horizontally attached to the upper or lower part of the sliding door, and a plurality of primary windings are arranged on the outer frame within the range of opening and closing movement of the sliding door. At least one primary winding always faces the secondary conductor, thereby forming a linear induction motor together with the secondary conductor and the secondary core, and detecting the opening/closing position of the sliding door on the outer frame. One or more position detection switches are provided, and the primary windings are sequentially switched and energized by the signals of the position detection switches to open and close the sliding door. A sensor is provided outside to detect outdoor environmental conditions, and the opening/closing conditions of the sliding door can be instructed from the keyboard.The central processing unit connected to the sensor, detection switch, and keyboard is An automatic opening/closing sliding door characterized in that the sliding door is opened and closed by exciting the primary winding in response to instructions from a sliding door opening/closing state detection switch, an indoor environmental condition detection sensor, an outdoor environmental condition detection sensor, and a keyboard. 2. An operating piece for confirming opening/closing is provided on the sliding door, a detection switch for confirming opening/closing is arranged on the outer frame and is activated by the operating piece, and the detection switch for confirming opening/closing is activated in response to the open or closed state of the sliding door. The automatic opening/closing sliding door according to claim 1, constructed in this way. 3. The automatic opening/closing sliding door according to claim 1 or 2, wherein the sliding door is locked in the open state and has a detection switch for confirming locking that is activated in response to the locking. 4. The automatic opening/closing sliding door according to any one of claims 1 to 3, wherein the sensor that detects indoor environmental conditions is a sensor that detects indoor temperature, humidity, or gas leakage. 5. The automatic opening/closing sliding door according to any one of claims 1 to 4, wherein the sensor that detects outdoor environmental conditions is a sensor that detects outdoor wind speed, brightness, or temperature.