JP5527599B2 - Cold storage with alarm device - Google Patents

Description

  The present invention relates to a cold storage with an alarm device in which an alarm device is activated when an attempt is made to open the door while the door is locked.

  For example, the cold storage for grains such as brown rice shown in FIG. 3 is provided with a door 2 that freely opens and closes the opening in the cold storage main body 1 having an open front, and the cooling system 13 provides the cold storage. It is used to cool the interior of the main body 1 to a predetermined temperature and store the stored item C such as brown rice stored in the interior in a fresh state. This cold storage is often placed in a warehouse or the like, and when the warehouse or the like is unattended at night, the stored items C in the warehouse are likely to be stolen. For this reason, a locking device 5 such as a padlock or cylinder lock is provided on the cold storage door 2 at night, and the door 2 is locked to prevent the stored item C from being stolen.

  In particular, facilities that require strict management, such as pharmaceuticals, may use a storage room that can be locked and unlocked with a key only when the correct password is entered, and has higher locking reliability ( For example, see Patent Document 1 below).

Japanese Patent Laid-Open No. 8-120899

  The cold storage shown in FIG. 3 and Patent Document 1 has a problem that even if the locking device 5 is locked, if the door 2 is forcibly opened with a bar or the like, the stored item C can be easily taken out.

  Then, this invention makes it a subject to improve the deterring effect of the theft of a stored article in the cool box provided with the locking device.

  In order to solve the above-described problems, the present invention includes a locking device that locks a door, an operation switch that operates in conjunction with locking and unlocking of the locking device, a door switch that detects an open / closed state of the door, and an alarm device. The operation switch is turned on by locking the locking device, and when the door is opened in the turned-on state, the door switch is turned on, the operation switch, the door switch, and the alarm. A circuit composed of a device and the main power supply constitutes a closed circuit, and the alarm device operates upon receiving power from the main power supply, while the operation switch is turned off by unlocking the locking device. In this state, the circuit is an open circuit, and the cold storage with a warning device is configured so that the warning device is not activated regardless of whether the door is opened or closed.

  In this way, not only simply locking the door with a locking device, but also operating the alarm device when the door is forcibly opened with a bar or the like in that locked state, compared to the case of locking only, the crime prevention The effect can be expected to increase further. In addition, by linking the locking device and the operation switch, the alarm device can be put into a standby state (a state in which an alarm can be issued when the door is opened) simultaneously with the locking operation, so that the user only performs the locking operation. It is possible to prevent mistakes forgetting to put the alarm device in a standby state. On the other hand, since the alarm device does not operate in the unlocked state, it can be handled in the same manner as an ordinary cold box (cold box without an alarm device).

  Use of a warning buzzer or warning light (such as a red rotating light) as this warning device is preferable in that it has a high effect of giving up the theft by the threatening action against the criminal. At the same time, it is more preferable that the abnormality occurrence be automatically notified to the security company or the like through the communication line because the abnormality can be promptly dealt with.

  Further, in the above configuration, an auxiliary power source charged by the main power source is provided, and in the energized state of the main power source, the auxiliary power source is charged while supplying electricity from the main power source to the circuit, while the main power source is charged. It is more preferable to supply electricity from the auxiliary power supply to the circuit in place of the main power supply when the power supply fails.

  Thus, by providing the auxiliary power supply, even if the power failure occurs when the alarm device is in a standby state and the supply of electricity from the main power supply is stopped, the supply of electricity from the auxiliary power supply is received, Since the alarm device can be kept in this standby state until the power of the auxiliary power source is exhausted, the reliability as the alarm device is high. In addition, it can be assumed that the criminal pulls out the cold storage plug from the socket for the purpose of preventing the alarm device from operating, but since the standby state is continued by this auxiliary power supply, an effect of giving up the crime can be expected.

  Furthermore, in each of the above-described configurations, it is more preferable to provide an operation lamp that is turned on when the operation switch is turned on.

  For example, an operation lamp is provided in a place where the door surface is easily visible, and it is turned on to clearly know the standby state of the alarm device, and the user forgets to put the alarm device in this standby state. In addition to preventing the crime, the criminal sees the lighting of the operation lamp, thereby enhancing the crime prevention effect.

  According to the present invention, the cold storage is provided with an operation switch that operates in conjunction with the locking / unlocking state of the locking device, and the alarm device is activated when the door is opened in the on state of the operation switch. Thus, by providing the alarm device, the crime prevention performance is enhanced as compared with a case where the device is simply locked by the locking device. Further, since the locking device and the operation switch are interlocked, it is possible to prevent a user from forgetting to put the alarm device in a standby state.

The circuit diagram which shows the control system of the cold storage with an alarm device which concerns on this invention The control part of the cold storage with an alarm device which concerns on this invention is shown, (a) is a top view, (b) is a right view, (c) is a left view, (d) is a front view, (e) is a back view Figure A general cold storage for brown rice equipped with a locking device is shown, (a) is a front view, (b) is a side sectional view.

  The cold storage with an alarm device according to the present invention is provided with a door 2 having an opening that can be opened and closed on a cold storage main body 1 for storing stored items C such as brown rice as shown in FIG. Since it has the same function as the cold storage according to the prior art except for the alarm mechanism, detailed description of the cold storage itself is omitted.

  A circuit diagram of a control system of the cold storage with an alarm device is shown in FIG. This control system includes an operation unit 3 provided on the door 2 side of the cool box and a control unit 4 provided on the cool box body 1 side.

  The operation unit 3 includes an operation switch 6 (key switch) that is interlocked with the locking / unlocking of the locking device 5 (cylinder lock) (see FIG. 3), and the door 2 surface easily visible. An operation lamp 8 that is lit when locked (standby state of the alarm device 7) is provided. On the other hand, the control unit 4 includes a substrate 9 on which a control circuit is formed, a door switch 10 that detects opening and closing of the door 2, an alarm device 7 (alarm buzzer), a main power source 11 (AC 100V), and an auxiliary device. A power source 12 (nickel metal hydride battery, DC 3.6V) is provided. The main power source 11 is connected to the terminals H1 and H2 of the substrate 9, the operation switch 6 and the display lamp 8 are connected to the terminals H3, H4 and H5, the door switch 10 and the alarm device 7 are connected in series to the terminals H6 and H7, and the auxiliary power supply is connected. 12 are connected to terminals H8 and H9, respectively.

  The main power supply 11, the operation switch 6, the door switch 10 and the alarm device 7 constitute one circuit. When the operation device 6 is turned on by locking the locking device 5 and the door 2 is opened in this on state, the circuit is closed and the alarm device 7 supplies power from the main power supply 11. Act upon. On the other hand, when the locking device 5 is unlocked, the operation switch 6 is turned off, the circuit becomes an open circuit, and the alarm device 7 can be prevented from operating regardless of the open / closed state of the door 2. The main power source 11 also serves as a power source for driving the cooling system 13 (see FIG. 3) of the cold storage.

  On the substrate 9, a varistor 14 that removes noise from the main power supply 11, a transformer 15 that lowers the AC voltage, a bridge diode 16 that converts AC to DC, a series regulator 17 that stabilizes the DC voltage, and an auxiliary power supply A control circuit is composed of a comparator 18, a resistor 19, a capacitor 20, a transistor 21, a fuse 22, relays 23 and 24, and a diode 25 that switch the output with respect to 12 voltages.

  In the energized state of the main power supply 11, electricity is supplied to the circuit by the main power supply 11 and the auxiliary power supply 12 is charged until it is fully charged. On the other hand, when the main power supply 11 fails for some reason, the voltage drop of the main power supply 11 is detected by the relays 23 and 24 so that electricity is supplied from the charged auxiliary power supply 12 to the circuit. The power supply path is switched. And while electricity is supplied from this auxiliary power supply 12, the standby state of the alarm device 7 is maintained when the operation switch 6 is turned on. When the energization of the main power supply 11 is resumed, the power supply path is switched again, and electricity is supplied from the main power supply 11 to the circuit and the auxiliary power supply 12 is charged.

  As shown in FIG. 2, the control unit can be stored compactly in one case 26, and the alarm device 7, the board 9, the door switch 10, and the auxiliary power supply 12 are stored in the case 26. A battery box 27, wiring from the operation unit 3, and a connector 28 that connects the main power supply 11 are provided. The alarm device 7 and the like are wired according to the circuit diagram shown in FIG. In addition, a hook portion 29 is formed on the wall portion of the case 26, and the hook portion 29 can be easily fixed to the wall surface of the cool box main body 1 by screwing.

  The door switch 10 is connected in series with the alarm device 7 and detects opening / closing of the door 2 only when the operation switch 6 is in the on state (standby state of the alarm device 7). (Not shown), the internal cooling fan may be operated when the door 2 is opened in the same manner as a general cold storage.

DESCRIPTION OF SYMBOLS 1 Cold storage body 2 Door 3 Operation part 4 Control part 5 Locking device (cylinder lock)
6 Operation switch (key switch)
7 Alarm device (alarm buzzer)
8 Indicator lamp 9 Substrate 10 Door switch 11 Main power supply 12 Auxiliary power supply 13 Cooling system 14 Varistor 15 Transformer 16 Bridge diode 17 Series regulator 18 Comparator 19 Resistor 20 Capacitor 21 Transistor 22 Fuse 23, 24 Relay 25 Diode 26 Case 27 Battery box 28 Connector 29 Hook part H1-H9 terminal

Claims (3)

A locking device (5) that locks the door (2), an operation switch (6) that operates in conjunction with the locking and unlocking of the locking device (5), and a door switch (10) that detects the open / closed state of the door (2) ), An alarm device (7), and a main power source (11),
It said locking device (5) by the actuating switch (6) and the input state by locking the said door and to a standby state capable of emitting an alarm when the door opened, to open the door (2) in this input state When the switch (10) is turned on, a circuit comprising the operation switch (6), the door switch (10), the alarm device (7), and the main power source (11) forms a closed circuit, and the alarm The device (7) is operated by receiving power supply from the main power source (11) to prevent the stored goods from being stolen, while the operation switch (6) is unlocked by unlocking the locking device (5). A cold storage with an alarm device in which the alarm device (7) is not activated regardless of whether the door (2) is opened or closed.   An auxiliary power source (12) charged by the main power source (11) is provided. When the main power source (11) is energized, the auxiliary power source (12) is supplied with electricity from the main power source (11). 2, while the main power supply (11) is powered down, electricity is supplied to the circuit from the auxiliary power supply (12) instead of the main power supply (11). Cold storage with alarm device.   The cold storage with an alarm device according to claim 1 or 2, further comprising an operation lamp (8) that is lit when the operation switch (6) is turned on.

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