JP3439818B2 - Control device for shutter - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shutter control device for controlling the opening and closing operation of a shutter provided at an entrance of a store, an office, a garage, or the like. 2. Description of the Related Art FIG. 4 is a front view showing a conventional shutter. In FIG. 4, reference numeral 1 denotes a pair of hollow guide rails provided on the left and right sides of an opening such as an entrance to be opened and closed by the shutter. Reference numeral 2 denotes a plurality of panels, and the panels 2 are vertically connected and hung so as to close the entrance. The left and right edges of these panels 2 are
The guide rail 1 is inserted into the inside of the guide rail 1 through a vertically elongated narrow opening. Reference numerals 3 are pins provided on both side edges of each panel 2, and reference numerals 4 are guide rollers rotatably provided on the pins 3, which roll in the guide rail 1 in the vertical direction. [0004] Reference numeral 5 denotes a chain for connecting and suspending a plurality of panels 2 by engaging the respective pins 3, and is provided in the guide rail 1. Reference numeral 6 denotes a driving mechanism (not shown) for raising and lowering the panel 2 and a storage unit for storing the panel 2, which is provided at the back of the ceiling or the like. The drive mechanism includes a sprocket meshed with the chain 5, a motor for rotating the sprocket, a speed reducer for reducing the rotation of the motor, and the like (neither is shown). Next, the operation will be described. FIG. 5 shows a state in which the shutter is closed, in which all the panels 2 are in the lowered position, and the space between the pair of guide rails 1 is closed. When the motor of the drive mechanism is rotated from this state, the sprocket rotates and the chain 5 is wound up. Therefore, each panel 2 rises as each guide roller 4 rolls upward in the guide rail 1 and is sequentially stored in the storage section 6. [0006] Two rails (not shown) are provided in the storage portion 6 in parallel in the horizontal direction, and the guide rollers 4 are guided by these rails so that each panel 2 is arranged in a line. Are arranged and stored. Thus, the shutter is opened. On the other hand, if the motor is reversed from this state, the chain 5 is extended. This makes each panel 2
Are sequentially sent out from the storage section 6 and descend along the guide rails 1 to be in a fully closed state as shown in FIG. In some cases, an automatic lock device or a manual lock device is provided to lock the shutter at the fully closed position. In the case of the manual locking device, a turning device is provided inside the lower part of the shutter (inside the room). To unlock the opening device, open a small window provided in the shutter from outside and put a hand in there. It is necessary to operate the lever to unlock. Further, in the case where the automatic locking device is provided,
A large-scale brake mechanism is provided, which can be activated or deactivated by using large power. [0010] Since the conventional shutter is configured as described above, if a manual locking device is used to lock the shutter in the fully closed position, the shutter is unlocked. In such a case, it is necessary to open the small window of the shutter and operate the lever. In this case, since the small window of the shutter is provided at the lower portion, the operation is troublesome.
Also, in cold weather, the lock may freeze and the operation may be difficult. Further, there is a problem that an automatic lock device employing a large-scale brake mechanism or the like has a complicated structure and a high cost. SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and it is possible to use a simple mechanism to securely lock a shutter when a commercial power supply fails or when the shutter is not operated. It is an object of the present invention to provide an inexpensive shutter control device that can easily and manually open and close the shutter by unlocking the shutter, and is easy to install and handle. [0013] A shutter control device according to the present invention, which raises, lowers, and stops a shutter by operating a shutter raising switch, a shutter lowering switch, and a shutter stop switch. Are connected to the output side of a power unit connected to the commercial power supply, and both ends of the shutter drive motor are short-circuited or short- circuited by a lock switch that can be externally operated when the commercial power supply fails or the shutter is not operated. Solution
Dividing possible, and also to stop the downward movement of the shutter by the lowest stop control circuit in the lower limit position of the shutter,
At the upper limit position of the shutter, the raising operation of the shutter is stopped by turning on the switch for the upper limit stop control. According to the shutter control device of the present invention, both ends of the shutter driving motor are short-circuited via relay contacts connected when the shutter is not operated or the commercial power supply is cut off by turning on the lock switch. , The shutter open / close state can be locked, and the shutter can be opened / closed arbitrarily by unlocking the lock switch.
Is easily performed manually . Further, the power unit extracts a low-voltage DC voltage from a commercial power supply, and makes the control circuit for driving the shutter operable with a small force by using this DC voltage, thereby facilitating assembly and handling of the apparatus, and lower limit. The stop control switch and the upper limit stop control circuit automatically stop the lowering operation and the raising operation of the shutter at the lower limit position and the upper limit position, respectively. An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a circuit diagram showing a shutter control device. In the drawing, reference numeral 11 denotes 50/60 Hz, 100 VAC.
And a power unit 12 such as an AC / DC converter which is connected to the commercial power supply and extracts a low DC voltage. Numerals 13 and 14 denote a pair of female connectors and male connectors which are connected so as to connect the contacts to each other. One output terminal of the power unit 12 is directly connected to the contact of the female connector 13, and the other output terminal is connected to the shutter up switch 15, the shutter down switch 16 and the shutter stop switch 17 connected in parallel with each other. , Are connected to the contacts of the female connector 13, respectively. The other output terminal is a female connector 1
The contacts of the female connector are also connected to each other via a lock switch 18. This lock switch 18 can be provided in a place where it is difficult for others to find it. On the other hand, reference numerals 19 and 20 denote a relay for switching up / down and a relay for operating the shutter, one end of which is connected to the contact of the male connector 14. The other end of the relay 19 is directly connected to the male connector 14. The other end of the relay 20 is directly connected to the contact of the male connector 14 and the contact of the male connector 14 via the diode 21. Here, 22 is a smoothing capacitor, and 23 and 24 are diodes for removing noise. Further, the relays 19a and 19b are
Relay switch, which is switched in conjunction with
Reference numerals a and 20b denote relay switches operated by the relay 20, and these movable contact pieces c are in contact with the contact a when inoperative in the drawing, and the contact b is open. The contact a of the relay switch 20a is connected to the contact of the male connector 14, and the contact b is connected to one end of each of the relays 19 and 20 and the contact of the male connector. The contact b of the relay switch 19c
The contact a of the relay switch 19b is connected to the contact c of the relay switch 20a, and the contact a of the relay switch 19a and the contact b of the relay switch 19b are both grounded. And, each relay switch 19a, 19b
Are connected to the contacts of the male connector 25 which are interconnected with the female connector 26, respectively. Reference numeral 27 denotes each of these relay switches 19a,
A capacitor for insulating the circuit between the contact pieces c of 19b in a DC manner, and a shutter driving motor 28 is connected between the contacts of the female connector 26. The contact of the male connector 14 is grounded. Reference numerals 29, 30, 31, and 32 denote resistors and capacitors connected in series / parallel to the motor circuit including the contact c of the relay switch 19a, and these connection terminals hold the operations of the relays 19 and 20. The base of the transistor 33 is connected, the collector of the transistor 33 is connected to the contact of the male connector 14, and the emitter is grounded via the diode 34 via the contact c of the relay switch 20b and the contact b. Reference numerals 35, 36, 37 and 38 denote resistors and capacitors connected in series and parallel to the motor circuit including the contact c of the relay switch 19b.
The base of a transistor 39 for holding the operation of the relay 20 is connected, the collector of the transistor 39 is connected to the contact of the relay 20 and the male connector 14, and the emitter is connected to the contact c of the relay switch 20b via the diode 34. And the contact b. The contact of the male connector 25,
Is grounded, and the contact is connected to a connection point P2 of the resistors 35 and 36. The collector of a transistor 40 whose emitter is grounded is connected to this connection point P2, and the resistors 41 and 42 for setting the bias voltage and the contact of the female connector 26 are connected to the base of this transistor. The contacts of the female connector 26 are connected to each other via a counter type limit switch 43 for detecting the lower limit position of the shutter. Further, the connection point P2 is a diode 44
And the connection point P1 of the resistors 29 and 30 is connected to a contact of the male connector 14 via a diode 45. Reference numeral 46 denotes a motor load detecting resistor connected in series with a diode 47, which is connected between the contact of the male connector 14 and the ground together with a capacitor 48 and a resistor 49. Is connected to a resistor 51 via a resistor 50. The connection point at one end of each of the resistors 50 and 51 is connected to the base of the transistor 52, the emitter is connected to the other end of the resistor 51, and the collector is connected to the connection point P1. Note that these resistors 46, 4
9, 50, 51, capacitor 48, diode 47 and transistor 52 are shutter upper limit stop control circuit 60.
Is formed. 53 is the connection point P1 and the relay 2
Reference numeral 55 denotes a diode connected between the connection point P2 and the relay 19. Reference numeral 54 denotes a male connector which is juxtaposed to the male connector 25 and to which the female connector 26 is selectively connected, the contacts of which are connected alternately to the contacts of the male connector 25, respectively. I have. The contact of the male connector 54 is grounded, and the contact is connected to the base of the transistor 40. FIGS. 2 and 3 are a front view and a front sectional view, respectively, showing the shutter drive mechanism G. In FIG. 2, reference numeral 61 denotes the shutter drive motor 28, a speed reduction gear 62, This is a case in which a counter limit switch 43 for detecting the lower limit position of the shutter, which is connected via a. Reference numeral 63 denotes the motor 2 for driving the shutter.
8, the output shaft 64 of the speed reducer 63
Is mounted with a sprocket 65 meshed with a chain that moves up and down the shutter panel described above. 6
Reference numeral 6 denotes a mount for the drive mechanism G having a mount plate for the speed reducer 63 integrally. The male connectors 25, 5 in the circuit (control circuit section) N shown in FIG.
2, a female connector 26 is connected to the male connector 25 in FIG. Next, the operation will be described. First, the present invention is provided with a lock switch 18 that can be operated externally. The lock switch 18 is turned on when the power switch of the commercial power supply 11 is turned off or the relay switch 20a is turned off when the shutter operation relay 20 is not operated, that is, when the contact c is connected to the contact a. To Thus, the ground → male connector 14,
Contact of female connector 13 → Lock switch 18 → Contact of female connector 13 and male connector 14 → Relay switch 20a → Contact a and contact c of relay switch 19b → Contact of male connector 25 and female connector 26 →
The shutter drive motor 28 is short-circuited by a closed circuit of the shutter drive motor 28 → contact of the female connector 26 and the male connector 25 → contact c of the relay switch 19a, contact a → earth. For this reason, the shutter driving motor 28
Is locked, the open / closed state of the shutter is maintained,
Further elevation (opening / closing) of the shutter is restricted. In the event of a power failure, the shutter can be easily opened and closed manually by opening the lock switch 18 and releasing the short circuit of the shutter driving motor 28. Next, a case in which the shutter is raised to open an entrance such as a garage will be described. First, the shutter raising switch 15 is turned on. Thereby, the power unit 12 → the contact of the female connector 13 and the male connector 14 → the relay 19 and the relay 20, the diode 21
→ Contacts of the male connector 14 and the female connector 13 → Electric current flows through the path of the shutter raising switch 15 → the power unit 12, and the respective relays 19 and 20 are energized, and the respective relay switches 19a and 19b and the relay switch 20
The respective contact pieces c of a and 20b are switched to the contact a. For this reason, from the power unit 12, the contacts of the female connector 13 and the male connector 14 → relay switch 20a → relay switch 19a → male connector 2
5, the contact of the female connector 26 → the shutter driving motor 28 → the contact of the female connector 26 and the male connector 25 → the relay switch 19b → the ground → the resistor 46 → the diode 47 → the contact of the male connector 14 and the female connector 13 → the power unit Current flows through 12 paths. Thus, the shutter driving motor 28
Current flows in the direction indicated by the solid line e, and the sprocket 65
Is rotated to raise the shutter. When the shutter reaches the upper limit position, the shutter is prevented from rising further, and a large current flows through the shutter driving motor 28 due to an increase in load. For this reason, the resistance 4
6 increases, and the transistor 52 is turned on based on the voltage across the resistor 46. Therefore, the potential of the connection point P1 connected to the collector of the transistor 52 decreases, and even after the return of the shutter raising switch 15,
The transistor 33 that holds the operation of the relays 19 and 20 while receiving the motor supply voltage while being on is turned off. As a result, the relays 19 and 20 are deenergized, the contact c of the relay switch 20a returns to the contact a side, and the power supply to the shutter driving motor 28 is cut off. 28 will stop. Next, a case where the shutter is lowered to close the entrance will be described. In this case, first,
The shutter down switch 16 is turned on. This allows
Power unit 12 → contact of female connector 13 and male connector 14 → relay 20 → contact of male connector 14 and female connector 13 → shutter lowering switch 16 →
Since current flows through the path of the power unit 12, the relay 20 is operated, and the contact c of the relay switches 20a and 20b is switched to the contact b. Therefore, the output of the power unit 12 is
Contact of female connector 13 and male connector 14 and relay switch 20a → relay switch 19b → contact of male connector 25 and female connector 26 → shutter driving motor 28 → contact of female connector 26 and male connector 25 → relay switch 19a → ground → resistor 46 → diode 47 → contact of male connector 14 and female connector 13 → power unit 12. Therefore, the shutter driving motor 28
The current flows in the direction indicated by arrow f, which is the opposite direction to the above, and the motor 28 rotates in the reverse direction to rotate the sprocket 65.
As a result, the shutter panel connected to the chain is lowered to close the entrance. On the other hand, the number of revolutions of the shutter driving motor 28 is counted by a counter in a counter type limit switch 43 via a gear pump # 62, and when the count reaches a set count value corresponding to the lower limit position of the shutter, the counter counts. The type limit switch 43 is turned on. For example, if this counter counts from 0 to 999,
For example, when the count value 500 at the start (down) of the repetition of the shutter reaches the count value 999, the counter type limit switch 43 is turned on. As a result, the potential at the connection point P2 held at the drive potential of the motor circuit decreases, and therefore, the rotation of the shutter drive motor 28 stops, and further lowering of the shutter is restricted. You. Next, when the shutter stop switch 17 is turned on, the connection point P1 → the diode 45 → the contact of the male connector 14 and the female connector 13 → the shutter stop switch 17 → the path of the power unit 12 and the connection point P2 → In the path of the diode 44 → the male connector 14 and the contact of the female connector 13 → the shutter stop switch 17 → the power unit 12, the potential of each of the connection points P1 and P2 decreases, so that the base potential of the transistors 33 and 39 also decreases. Therefore, these transistors 33, 3
9, the self-holding of the relays 19 and 20 by the relay 9 is released, the contact c of each of the relay switches 19a, 19b, 20a and 20b is switched to the contact a side, the drive of the shutter drive motor 28 is stopped, and the shutter Is stopped. The drive mechanism G having the control circuit section N and the shutter drive motor 28 may be installed with its direction changed to the left end or right end of the upper part of the entrance depending on the structure of the entrance in the garage. Therefore, it is necessary to reverse the rotation direction of the shutter drive motor 28 according to the installation position. In the present invention, as shown in FIG. 1, by connecting the female connector 26 to another male connector 54 facing the front of the case 61, the shutter drive motor 28 is driven in the reverse direction through the contact. Apply current,
As described above, the rotation direction of the shutter driving motor 28 can be reversed. In this case, for example, when the count value 500 at the start (lowering) of the shutter extension (count) reaches the count value 000, the counter-type limit switch 43 may be turned on. As described above, according to the present invention, the shutter up switch, the shutter down switch and the shutter stop switch are connected to the output side of the power unit connected to the commercial power supply, and the power failure of the commercial power supply is performed. the lock shorted both ends of the motor shutter drive by closing the external operable lock switch at the time of non-operation of the time and the shutter
The short circuit is released by opening the switch, the lowering operation of the shutter is stopped by the switch for the lower limit stop control at the lower limit position of the shutter, and the shutter raising operation is performed by the upper limit stop control circuit at the upper limit position of the shutter. , The shutter can be securely locked using a simple mechanism when the commercial power supply fails or the shutter is not operated, and the shutter can be unlocked arbitrarily to manually open and close the shutter.
There is an effect that a device that can be more easily implemented and that can be easily installed and handled by a person other than a specific qualified person can be obtained.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a circuit diagram showing a shutter control device according to an embodiment of the present invention. FIG. 2 is a front view of a driving mechanism according to the present invention. FIG. 3 is a front sectional view of the drive mechanism shown in FIG. 2; FIG. 4 is a front view showing a conventional shutter. [Description of Signs] 11 Commercial power supply 12 Power unit 15 Shutter up switch 16 Shutter down switch 17 Shutter stop switch 18 Lock switch 28 Shutter driving motor 43 Counter type limit switch (switch) 60 Upper limit stop control circuit

Claims (1)

(57) [Claim 1] A power unit for converting a commercial power supply into a DC low voltage, and a shutter connected to an output side of the power unit and operated when raising, lowering and stopping the shutter, respectively. A shutter-up switch, a shutter-down switch, and a shutter-stop switch for rotating the drive motor forward, backward, and stop, respectively, and are closed when the commercial power supply fails or the shutter is not operated, and both ends of the shutter drive motor are short-circuited. To open the short circuit
An externally operable lock switch, a switch for detecting a lower limit position of the shutter, shutting off power supply to the shutter drive motor, and stopping the lowering operation of the shutter, A shutter control device comprising: an upper limit stop control circuit that detects an increase in motor current of a shutter driving motor, shuts off power supply to the shutter driving motor, and stops the shutter raising operation.