JP2005036488A - Door guard device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a door guard device, in which a door guard arm can be locked and unlocked even from the outside of a door and which is also installed easily and has a higher burglarproofness. <P>SOLUTION: In the door guard device, the door guard arm 30 can be locked and unlocked even from the outside of the door by remotely controlling a door guard unit 10 rotating the arm 30 by a motor 21 in a wireless type by a transmitter 50. In the device, a main battery 12a is changed over to a back-up battery 12b by a power changeover switch 13 mounted on the unit 10 when the power of the main battery 12a driving the unit 10 is used up. Accordingly, the unit 10 can be driven again, and a shutting-out to the outside of the door can be prevented. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a door guard device for remotely operating a door guard arm wirelessly, and particularly to a door guard device suitable for a house.

  Conventionally, if you live in a house, apartment, etc., and you lock the door of the entrance, there is a security concern with only the locking device installed on the indoor side of the door provided at the entrance of the house The door can be double-locked by providing two locking devices on the indoor side of the door, or by providing a door guard device as in Patent Document 1 and Patent Document 2 in addition to the locking device. There are many things. This door guard device is designed to prevent illegal intrusion by opening the door a little when the visitor comes to confirm the opponent.

  However, the door guard device described in Patent Document 1 and Patent Document 2 is intended to protect the body from an outsider while the resident is inside, and has crime prevention properties when the resident is inside. Because it cannot be operated from outside the room when going out, it lacked security.

Therefore, Patent Document 3 and Patent Document 4 describe a door guard device that can be operated from the outdoor side in order to improve crime prevention when going out.
In Patent Document 3, the door guard arm is raised and the door is closed when going out, the locking body is released from the guide block, and the door guard arm is locked by engaging with the insertion portion of the door guard arm. When returning home, the door guard arm is released by opening the door by the length of the door guard arm, inserting a key through the gap, and turning the cylinder lock provided on the locking body.

  In Patent Document 4, the cylinder lock is inserted through the door and connected to the door guard. When the cylinder lock is turned from outside the room when the user goes out, the pinion rotates, and the door guard arm is raised by the link mechanism. Engage with the receiver and lock. When returning home, if the cylinder lock is turned from the outside, the door guard arm is returned to its original position by the link mechanism and unlocked.

JP-A-6-137014 JP-A-9-195606 JP 2002-180725 A JP 2002-227485 A

  If the door guard device described in Patent Literature 3 and Patent Literature 4 is used, it can be operated from the outside, but since the cylinder lock is used to lock and unlock the door guard arm, the door guard device can be used by picking or the like. Since the door guard device is also operated in the same way as the lock is opened, the crime prevention property is low.

  Also, if you use two door locks or a door guard device that can be operated from the outside using a cylinder lock, a double lock will be applied to the door. In order to increase the number or pass the cylinder lock of the door guard device through the door, it is necessary to open an insertion hole for the door lock, which takes time and effort.

  The present invention has been made to solve the above-described problems, and the object of the present invention is to provide a door guard device that can lock and unlock the door guard arm even from the outside of the door, can be easily attached, and has higher crime prevention. The purpose is to provide.

  In order to solve the above-mentioned problems, the present invention is attached to the indoor side of a door, and is attached to the wall of the room and to be engaged with the engaging tool. A door guard device including a door guard arm that prevents the door guard arm from being opened at a constant interval, an actuator that rotates the door guard arm, a main power source that drives the actuator, and the power of the main power source is equal to or less than a predetermined value A door guard unit comprising a warning circuit for generating a warning sound and a receiving unit for receiving a signal for operating the actuator, and a wireless type for operating the actuator in the receiving unit of the door guard unit. A transmitter for transmitting a signal to the door guard unit, the door guard unit being driven by the transmitter, By eta, and technical features to be able to rotate the door guard arm even from a distance.

  In the present invention, it is preferable that the door guard unit has a backup power source that can drive an actuator instead of the main power source, and a power source switch that can manually switch between the main power source and the backup power source. Then, when the actuator can no longer be driven by the main power source, the actuator can be driven again by switching the power source changeover switch to the backup power source.

In the present invention, since the door guard arm can be opened and closed by the actuator of the door guard unit, if the transmitter is used, the door guard arm can be hooked and removed from the outside of the door. Because it does not use, it is excellent in crime prevention of picking.
Also, if a battery is used as the main power supply as will be described later, no extra wiring is required compared to the case of using an AC power supply, the door guard unit can be made smaller, and the power of the main power supply is below a certain value. If it becomes, a warning sound is sounded to prompt the user to replace the battery.

  Furthermore, since the door guard unit is small and it is only necessary to attach the unit to the indoor side of the door, it is not necessary to provide an insertion hole or the like in the door, and it does not take time and can be easily replaced with the provided door guard device.

  Also, since the door guard unit is provided with a backup power supply in place of the main power supply, even if the power of the main power supply decreases and it becomes difficult to drive the actuator, switching the switch to the backup power supply will switch the actuator power supply again. Drive becomes possible.

  In addition, since the power switch can be switched manually, even if the main power supply cannot drive the door guard arm, it can be easily switched to the backup power supply by inserting a hand from the door gap and operating the switch. Can do.

  A door guard device according to an embodiment of the present invention will be described with reference to the drawings.

  Drawing 1 is an explanatory view showing the composition of the door guard device concerning one embodiment. The door guard device includes a door guard arm 30, a door guard unit 10 that opens and closes the door guard arm 30 with a motor, and a transmitter 50 that remotely operates the door guard unit 10 wirelessly. The door guard unit 10 to which the door guard arm 30 is attached is attached to the door 40, and the engagement tool 31 that engages with the door guard arm 30 so as not to open the door more than a certain distance is attached to the indoor wall 41. . The transmitter 50 is carried by the user.

  Here, in one Embodiment of this invention, although the engaging tool 31 is attached to the indoor wall 41, since the side of the door 40 is not necessarily a wall, the side of the door 40 is If it is not a wall, it can be attached to the door frame of the door. In this case, since the rotation angle of the door guard arm 30 varies depending on the attachment position of the engagement tool 31, it is necessary to adjust the rotation angle of the door guard arm 30 by the door guard unit 10 in advance.

  A user performs radio wave transmission to the door guard unit 10 by operating the switch 51 of the transmitter 50 having a built-in transmitter from indoors and outdoors. When the door guard unit 10 receives the radio wave transmitted from the transmitter 50, the door guard unit 10 rotates the door guard arm 30 to lock and unlock it. Thus, since the door guard arm 30 can be locked and unlocked even from the outdoor side, the crime prevention property when going out can be improved.

  In one embodiment of the present invention, the door guard unit 10 operates by receiving a signal from the transmitter 50 wirelessly. However, the door guard arm 30 is locked and unlocked on the indoor wall 41 and the main lock 71. If a remote control unit (not shown) for displaying the unlocking / unlocking state is separately provided and the locking / unlocking state is transmitted from the door guard unit 10 and the main locking unit 70, the unlocking / unlocking state of the door guard and the main locking is achieved. Can be displayed on the monitor of the remote control unit, or the battery can be exchanged. This makes it easy to check whether the door guard device is locked or unlocked even when indoors.

  2A is a front view of the door guard unit 10, FIG. 2B is a side view of the door guard unit 10, and FIG. 3 shows a configuration of the door guard unit 10. The door guard unit 10 includes a receiving unit 11 that receives radio waves from the transmitter 50, a driving unit 20 that opens and closes the door guard arm 30, a battery housing unit 12 that houses six AA batteries, a main power source, and a backup power source. A power supply changeover switch 13 for switching between and a main control board 14 on which a CPU 60 and the like to be described later are incorporated, and these are integrally configured so that construction work on the door is easy.

  The drive unit 20 of the door guard unit 10 includes a motor 21, a worm 22, a spur gear 23, a clutch-equipped gear 24, and a connecting gear 25 connected to the door guard arm 30. Although a motor is used here, a solenoid can also be used as an actuator.

  The battery storage unit 12 stores three main batteries 12a as main power supplies and three backup batteries 12b as backup power supplies, and the backup battery 12b has no power to drive the motor 21 in the main battery 12a. Sometimes it is provided to drive the motor 21 instead.

  Since the power switch 13 is disposed on the side of the door guard unit 10, when the main battery 12a can no longer drive the motor 21, when switching to the backup battery 12b, the door 40 is moved by the length of the door guard arm 30. It can be switched manually by putting a hand through the open gap.

  Since the door guard unit 10 is battery-driven as described above, it cannot be locked / unlocked by radio waves (weak radio waves) from the transmitter 50 if the battery capacity is insufficient. For this reason, when the battery voltage decreases, a warning sound is emitted by the warning circuit to prompt battery replacement.

  In one embodiment of the present invention, a buzzer is used as a means for generating a warning sound, and a buzzer sounding circuit is provided as a warning circuit for controlling the warning sound. However, as long as a sound is generated, the buzzer is limited to the buzzer. It is not something.

  FIG. 4 shows an electrical configuration of the door guard unit 10. The door guard unit 10 includes a CPU 60, a battery voltage detection circuit 62 that detects the voltage of the main battery 12a, a power supply circuit 64 that converts the voltage of the main battery 12a or the backup battery 12b into a CPU supply voltage, and a transmitter 50 Receiver 11 for receiving radio waves, battery voltage detection circuit 63 for detecting the voltage of backup battery 12b, motor control circuit 66 for driving motor 21 for locking and unlocking door guard arm 30, main battery 12a and backup A power switching circuit 61 that switches between the battery 12b, a lock / unlock position detection circuit 65 that detects the lock / unlock state of the door guard arm 30, a door switch 67a that is turned on when the door 40 is open, and a door switch 67a. The door switch input circuit 67 for detecting the state, and as described above, the main battery 1 Consisting buzzer sounding circuit 68. the voltage of a controls the buzzer 68a for prompting battery replacement by blowing upon reduction.

  The door switch 67a is turned off when the door 40 is closed, and turned on when the door 40 is opened. When the state of the door switch 67a is detected by the door switch input circuit 67 and the door switch 67a is ON, the door guard unit 10 does not operate.

  FIG. 5 is a circuit diagram showing the configuration of the power supply switching circuit 61 and the locking / unlocking position detection circuit 65 in FIG. The power supply switching circuit 61 is interlocked with the detection result of the lock / unlock position detection circuit 65 when the power supply switch 13 for switching between the main battery 12a and the backup battery 12b and the backup battery 12b is selected by the power supply switch 13. Directional switches SW1, SW1, SW1 are provided. The power switch 13 is interlocked so that the backup battery 12b is turned off when the main battery 12a is selected, and conversely, when the backup battery 12b is selected, the main battery 12a is turned off. It is linked.

  The locking / unlocking position detection circuit 65 includes a locking switch SW2 that is turned on when the door guard arm 30 is locked by operating the transmitter 50, and an unlocking switch that is turned on when the door guard arm 30 is unlocked. SW3.

  When the power switch 13 selects the main battery 12a, current flows directly from the main battery 12a to the power supply circuit 64. When the power switch 13 selects the backup battery 12b, the current flows to the power circuit 64 via the directional switches SW1, SW1, SW1 and the lock / unlock position detection circuit 65. The directional switches SW1, SW1, and SW1 are all ON when the lock switch SW2 of the lock / unlock position detection circuit 65 is ON (when the door guard arm 30 is locked). ), And when the unlocking switch SW3 of the unlocking position detection circuit 65 is ON (when the door guard arm 30 is unlocked), the current does not flow in a fixed direction, so the switch is not turned on. It is like that.

  As described above, when the backup battery 12b is selected, whether or not the operation by the transmitter 50 can be determined by the state of the door guard arm 30 is determined. The backup battery 12b is selected when the door guard arm 30 can no longer be driven by the main battery 12a. If the door guard arm 30 is unlocked, the door opens and the transmitter 50 is required to be operated. There is no. That is, when the backup battery 12b is selected, it is only necessary to operate the transmitter 50 only in the locked state.

  As described above, the backup battery 12b only needs to have power that can be used only for the unlocking operation. When the position detection circuit recognizes the unlocking, no power flows from the backup battery 12b to the motor side. It is not always necessary to provide the same power as that of the main battery 12a as in the embodiment.

  As described above, by providing the backup battery, the door guard unit can be driven even when the power of the main battery is lost, and the user is prevented from being shut out of the door. it can.

Drawing 1 is an explanatory view showing the composition of the door guard device concerning one embodiment. FIG. 2A is a front view of the door guard unit, and FIG. 2B is a side view of the door guard unit. FIG. 3 is an explanatory view showing the structure of the door guard unit. FIG. 4 is a block diagram showing an electrical configuration of the door guard unit. FIG. 5 is a circuit diagram showing the configuration of the power supply switching circuit and the locking / unlocking position detection circuit in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Door guard unit 11 Reception part 12 Battery accommodating part 12a Battery 12b Battery 13 Power supply switch 20 Drive part 21 Motor 24 Gear 25 with a clutch mechanism 25 Connection gear 30 Door guard arm 31 Engagement tool 50 Transmitter 51 Switch 61 Power supply switching circuit 65 Locking release Lock position detection circuit 66 Motor control circuit 67 Door switch input circuit 67a Door switch SW1 Unidirectional switch SW2 Locking switch SW3 Unlocking switch

Claims (2)

Attached to the indoor side of the door,
An engagement tool attached to the wall of the room;
A door guard device including a door guard arm that is pivotally attached to engage with the engagement tool and prevents the door from being opened with a certain interval.
An actuator for rotating the door guard arm;
A main power source for driving the actuator;
A warning circuit for sounding a warning sound when the power of the main power supply is below a certain value;
A door guard unit comprising a receiving unit for receiving a signal for operating the actuator;
A transmitter that wirelessly transmits a signal to actuate the actuator in the receiver of the door guard unit;
The door guard unit, wherein the door guard unit is driven by the transmitter, and the door guard arm can be rotated from a remote position by the actuator. The door guard unit is
A backup power source capable of driving the actuator instead of the main power source;
A power source switch capable of manually switching between the main power source and the backup power source;
2. The door guard device according to claim 1, wherein when the actuator cannot be driven by the main power source, the actuator can be driven again by switching the power switch to the backup power source.

Images