JP5606188B2 - Handle device - Google Patents

Description

  The present invention relates to a handle device incorporated in, for example, a cabinet used in a data center.

  A handle device having a lock mechanism is attached to a cabinet door used in the data center. Such a handle device includes a handle handle pivotally attached to the handle body and a locking hook interlocked with the handle handle. When the handle handle is raised, the locking hook becomes an unlocked position. When the handle handle is tilted so as to be in close contact with the handle main body, the locking hook becomes the locking position. For this reason, the door cannot be opened if the handle handle is locked in the tilted position.

  An electric lock using a solenoid for this lock mechanism (Patent Document 1) is widely used. Such an electric lock can be switched between a locked state and an unlockable state by an electric signal from a management terminal or the like. However, since the solenoid is housed inside the handle body and the handle handle does not move unless it is operated by a person even if it is unlocked, the appearance of the locked state and the unlockable state can be distinguished. No. Therefore, an electric lock has been developed that is provided with an indicator lamp so that the locked state, the unlockable state, and the unlocked state can be identified. However, since the lighting control circuit for the indicator lamp, the circuit for sending the unlocking permission signal, and the circuit for sending the drive signal for the solenoid are independent, do not apply voltage to the solenoid when the unlocking permission signal is not input. Must be controlled by a microcomputer for control. For this reason, there existed a problem that processing time required and the need for program input.

JP 2003-239574 A

  Accordingly, an object of the present invention is to solve the above-described conventional problems, and to provide a handle device that can determine whether or not solenoid driving is permitted within the handle device and can increase the processing speed. .

The present invention, which has been made to solve the above-described problems, includes a lock release means, a lock release operation means, and an indicator lamp that displays a locked / unlocked state, and is connected to a control microcomputer. When the unlocking permission signal detection means that is turned on when the unlocking permission signal is input is connected in series to the circuit of the unlocking operation means, and the unlocking permission signal is detected by this detection means Only when the operation means is validated, the microcomputer releases a lock release signal when the validated operation means is operated, and the lock is released.

  As in claim 2, the unlocking permission signal detecting means is a photocoupler, the light emitting element of the photocoupler is connected in series to a circuit to which the unlocking permission signal is input, and is turned on by light emission of the light emitting element. It is possible to adopt a configuration in which the light receiving unit is connected in series to the circuit of the operation means. Note that, as in claim 3, the lock release means may be a solenoid.

  According to the handle device of the present invention, the detection circuit of the unlocking permission signal sent from the management terminal or the like and the means for validating the operation of the operation means are linked on the circuit, and the validated operation means is operated. When unlocked, a lock release signal is output from the microcomputer to release the lock. Therefore, it is possible to determine permission / non-permission of unlocking inside the handle device, and the processing speed can be increased as compared with the conventional case. In addition, the number of program inputs to the microcomputer can be reduced.

It is an appearance perspective view showing a handle device of an embodiment. It is sectional drawing of the handle apparatus of embodiment. 1 is a circuit diagram showing a first embodiment. FIG. It is explanatory drawing which shows the change of the lighting state of an indicator lamp. It is a circuit diagram which shows 2nd Embodiment. It is a circuit diagram which shows 3rd Embodiment. It is a circuit diagram which shows 4th Embodiment.

  FIG. 1 is an external perspective view showing the handle device of the embodiment, and FIG. 2 is a sectional view thereof. Reference numeral 1 denotes a hollow handle body fixed to a door of a cabinet or the like, and 2 denotes a handle handle that can be raised and lowered with respect to the handle body 1. The handle handle 2 is provided with an operation button 3 and an indicator lamp 4. A cylinder lock 5 is provided inside the handle body 1 so that it can be unlocked in an emergency, but this is not an essential requirement of the present invention.

  At the distal end of the handle handle 2 on the pivot side, there is a pair of hooks 6 that engage with the main body side of the cabinet or the like. As shown in FIG. 2, it is connected to the handle handle 2 by a link 7 so as to swing outward and to be locked. Thus, the door cannot be opened in the state where the handle handle 2 is tilted. Therefore, when the engaging step 8 is provided at the other tip of the handle 2 and the lock member 9 is engaged, the handle 2 cannot be raised. The lock member 9 is connected to a solenoid 10 which is unlocking means. When the solenoid 10 is turned on, the engagement step 8 and the lock member 9 are disengaged, and the handle handle 2 can be raised. It becomes. The solenoid drive signal, which is a lock release signal, is maintained for a predetermined time by a timer, and then automatically restored by a built-in spring.

The operation button 3 is for manually operating the solenoid 10 and is an unlocking operation means . However, the handle device of the present invention is configured such that the solenoid 10 cannot be operated by the operation button 3 unless the unlocking permission signal is input from the management terminal or the like. A specific circuit configuration for this purpose will be described below.

  FIG. 3 is a circuit diagram showing the first embodiment of the present invention, wherein 10 is a solenoid for unlocking, 3 is an operation button which is an operation means of the solenoid 10, and 4 is an indicator lamp for displaying a locked / unlocked state. It is. In this embodiment, the indicator lamp 4 includes a red light emitting diode 11 and a green light emitting diode 12, and displays red and green in the case of single lighting and orange in the case of both lighting. Reference numeral 20 denotes a photocoupler used as a means for detecting an unlocking permission signal.

  A to D are external connection terminals, A is a terminal to which a voltage is applied in a power-on state, B is a terminal to which an unlocking permission signal is input from a management terminal or the like, and C is a drive signal for the solenoid 10 from a microcomputer. An input terminal, D is a ground terminal. The red light emitting diode 11 is connected to the terminal A, and the green light emitting diode 12 is connected to the terminal B. However, the green light emitting diode 12 and the terminal B to which the unlocking permission signal is input to the light emitting element 21 of the photocoupler 20 are input. Are connected in series. Therefore, when the power is turned on, only the red light emitting diode 11 is lit and the indicator lamp 4 is displayed in red. When the unlocking permission signal is input, the green light emitting diode 12 is also lit, so that the indicator lamp 4 is displayed in orange. Become. Here, the management terminal is a PC or a mobile phone in a separate room or the like, and actually a control device is formed between the handle device and the management terminal, and an unlocking permission signal is sent from the management terminal. When it is transmitted, it enters the control device, and a signal is sent from the control device to the handle device. A signal from the handle device is also transmitted via the control device.

The light receiving unit 22 of the photocoupler 20 is a phototransistor or a photorelay, and is turned on by light emission of the light emitting element 21. The light receiving unit 22 is connected in series with an operation button 3 which is an unlocking operation means . Since the light emitting element 21 emits light only when the unlocking permission signal is detected and turns on the light receiving unit 22, the operation of the operation button 3 is effective only when the unlocking permission signal is detected. If the unlocking permission signal is not detected, the operation is invalid.

  For this reason, when the operation button 3 is operated in a state where the unlocking permission signal is input from the management terminal or the like, that is, in the unlocking permission state where the indicator light 4 is displayed in orange, a signal is sent from the terminal EF to the microcomputer. The microcomputer sends a drive signal from the terminal C to the solenoid 10. As a result, the solenoid 10 pulls the lock member 9 away from the engagement step portion 8 of the handle handle 2 and the lock is released. However, when the unlocking permission signal is not detected, the solenoid 10 does not move even if the operation button 3 is operated.

  As described above, according to the present invention, it is possible to determine whether the solenoid drive is permitted or not permitted inside the handle device without performing calculation by the microcomputer, and the microcomputer sends a drive signal to the solenoid 10 when the operation button 3 is operated. Since only this is necessary, the processing speed can be increased. Further, by inserting the bypass circuit 50 between the terminal C and the circuit through which the drive signal of the solenoid 10 flows, the solenoid 10 is driven even when the unlocking permission signal from the management terminal is turned off by the timer. During this time, the light emitting element 21 of the photocoupler 20 can be held while being turned on.

  FIG. 5 is a circuit diagram showing a second embodiment of the present invention. A transistor 30 is provided in parallel with the red light emitting diode 11, the input side of the red light emitting diode 11 is connected to the collector, and the base is driven by the solenoid 10. It is connected to a terminal C to which a signal is input. Other configurations are the same as those in FIG.

  Although the operation of the second embodiment is the same as that of the first embodiment, when the drive signal of the solenoid 10 is input, the transistor 30 is turned on, and the current that has been flowing through the red light emitting diode 11 until then is supplied to the transistor 30. To bypass. For this reason, since the red light emitting diode 11 is turned off and only the green light emitting diode 12 is turned on, the only difference is that the indicator lamp 4 is displayed in green. The change in the lighting state is shown in FIG.

  FIG. 6 is a circuit diagram showing a third embodiment of the present invention. This is a photo relay 25 incorporated in place of the photo coupler 20 of FIG. When the unlocking permission signal is detected, the photo relay 25 is turned on, and the operation button 3 is activated, and its operation is not different from that in FIG.

  FIG. 7 is a circuit diagram showing a fourth embodiment of the present invention. This incorporates an NPN transistor 40 instead of the photocoupler 20 of FIG. When the unlocking permission signal is detected, the transistor 40 is turned on and the operation button 3 is enabled, and its operation is not different from that shown in FIG.

  As described above, in the handle device of the present invention, the unlocking permission signal detection circuit and the means for enabling the operation of the operation means are integrated on the circuit, and the enabled operation means is operated. Since the microcomputer outputs a solenoid drive signal to release the lock, it is possible to determine whether the solenoid drive is permitted or not permitted inside the handle device, and the processing speed can be increased as compared with the prior art. . There is also an advantage that the number of program inputs to the microcomputer can be reduced. In this embodiment, the solenoid 10 is used as the unlocking means and the solenoid 10 drive signal is used as the unlocking signal. However, the present invention is not limited to the solenoid 10, and the locking member 9 is fixed by a locking piece or the like. Of course, the structure may be such that the locking piece rotates by releasing a signal to release the lock member 9 from being fixed.

DESCRIPTION OF SYMBOLS 1 Handle body 2 Handle handle 3 Operation button 4 Indicator light 5 Cylinder lock 6 Hook 7 Link 8 Engagement step part 9 Locking member 10 Solenoid 11 Red light emitting diode 12 Green light emitting diode 20 Photocoupler 21 Light emitting element 22 Light receiving part 25 Photorelay 30 Transistor 40 Transistor 50 Bypass circuit

Claims (3)

A handle device that includes a lock release means, an unlock operation means, and an indicator lamp that displays a locked / unlocked state, and is connected to a control microcomputer,
Connect the detection means of the unlocking permission signal that is turned on when the unlocking permission signal is input in series with the circuit of the unlocking operation means,
Only when the unlocking permission signal is detected by this detection means, the operation of the operation means is valid ,
A handle device that releases a lock by outputting an unlock signal from a microcomputer when a valid operation means is operated.   The detection means of the unlocking permission signal is a photocoupler, the light emitting element of the photocoupler is connected in series to the circuit to which the unlocking permission signal is input, and the light receiving unit that is turned on by light emission of the light emitting element is used as the circuit of the operation means. The handle device according to claim 1, wherein the handle device is connected in series. The handle device according to claim 1 or 2, wherein the unlocking means is a solenoid.

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