KR20050021153A - Power supply apparatus of an electronic doorlock - Google Patents

Abstract

PURPOSE: An apparatus for supplying power of an electronic door lock is provided to reduce the probability of complete discharge of a rechargeable battery by using induced electromotive force upon charging the rechargeable battery in the electronic door lock. CONSTITUTION: A primary coil(30) is installed on a door frame and connected to an external power(170) to generate induced electromotive force. A magnetic sensor(32) is installed on the door frame and performs a switching operation between the primary coil and the external power. A secondary coil(31) is installed on a position of a door which is opposite to the primary coil, thereby converting the induced electromotive force generated from the primary coil into a current. A magnetic(33) is installed on a position of the door which is opposite to the magnetic sensor, thereby operating the magnetic sensor. A power supplier(530) generates and provides driving power source from the current outputted from the secondary coil.

Description

Power Supply of Electronic Door Lock {POWER SUPPLY APPARATUS OF AN ELECTRONIC DOORLOCK}

The present invention relates to a power supply device for an electronic door lock, and more particularly, to a power supply device for maintaining the operating power of the electronic door lock at all times.

Electronic door locks are becoming more popular due to improved security and user convenience compared to manual door locks using conventional keys. Types of electronic door locks include electronic door locks using keypads, electronic door locks using RF-cards, and electronic door locks using fingerprints, and new electronic door locks such as eye recognition and raw vegetable recognition are being created one after another.

1 is a schematic view showing a conventional electronic door lock using a battery (battery) as a power source, Figure 2 is a schematic view showing a conventional electronic door lock using an external power source, the door lock main body 140 is installed in the door 200 The striker 130 is installed in the door frame 300.

1 and 2, the control unit 100 in the door lock main body 140 receives a signal of an RF-CARD input through a password or a predetermined receiving apparatus input through a predetermined keypad. Then, when the input signal is the same as the pre-stored authentication data, the controller 100 sends the unlock signal to the backset unit 110 to open the door 200. On the other hand, when the input signal is different from the authentication data, the controller 100 outputs a warning sound through a predetermined device. In this case, the power supply device uses a battery 120 or directly connected to an external power source 170.

Electronic door lock using the battery 120 in the prior art as shown in Figure 1, it is difficult to add various functions to the door lock due to the limit of the limited capacity of the battery, the cumbersome replacement due to battery consumption, emergency means according to the full discharge of the battery Has the same problem as the demands. Even when using a rechargeable battery rather than a disposable battery, there is a problem similar to that of a disposable battery, such as the trouble of charging and the emergency means required by the full discharge of the rechargeable battery.

In the conventional technology as shown in FIG. 2, the electronic door lock connected to the external power source 170 may be damaged in a part of the door when the door lock is installed, and the electric wire connecting the main body of the electronic door lock to the external power source is prevented from being exposed to the outside. There is a lot of difficulty in drawing wires inside. In addition, there is a problem that the function of the door lock is stopped when the power is interrupted for reasons such as risk of electric shock due to the direct connection of the external power source and power failure or power failure.

The present invention has been made in order to solve the problems of the prior art as described above, by using an induction electromotive force to supply the charging power to the rechargeable battery (rechargeble battery) of the main body electronically supplying the driving power required for the electronic door lock It is an object to provide a power supply of the door lock.

In order to achieve the above object, the present invention provides a door lock power supply, which is installed in a predetermined door frame and receives an external power source to generate a magnetic field, and a predetermined position of a position facing the primary side coil. A power supply provided in a door to supply a secondary side coil for converting induced electromotive force by a magnetic field generated by the primary side coil into a current, and a driving power required to perform a function of the door lock by using a current generated by the secondary side coil It characterized in that it comprises a supply.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

3 is a block diagram showing an embodiment of a power supply device for an electronic door lock according to the present invention.

The electric power supply device of the electronic door lock using the induction electromotive force is installed in the door frame and connected to the external power source 170 to generate the induction electromotive force, and installed in the door frame and the primary side coil 30 and The magnetic sensor 32 for switching between the external power source 170 and the door in a position facing the primary side coil 30 is installed to induce the voltage applied from the primary side coil 30 by induction electromotive force In the secondary side coil 31 for converting the voltage of the magnitude, the magnetic 33 installed in the door facing the magnetic sensor 32 to operate the magnetic sensor 32, and the secondary side coil 31 It includes a power supply unit 530 for generating and providing a driving power required for the electronic door lock from the output current.

The power supply unit 530 according to the state of charge of the rectifier 34 for converting the AC current generated in the secondary side coil 31 into a direct current, and the charging battery 610 for supplying driving power to the electronic door lock. It includes a charger 35 to charge the charging battery 610. The primary side coil 30 and the secondary side coil 31 constitute a transformer in which the output voltage is varied in accordance with the number of turns thereof.

Hereinafter, the primary side coil 30 and the magnetic sensor 32 will be referred to as the magnetic field generating unit 510, and the secondary side coil 31 and the magnetic 33 will be referred to as the magnetic field processing unit 520.

Looking at the action of the power supply configured as described above, when the door is closed, the magnetic 33 is approached to the magnetic sensor 32, the magnetic force lines generated from the magnetic 33 is the magnetic sensor 32 lead 28 Magnetize and attract each other. When this force is greater than the mechanical elasticity of the lead 28, the contact in the magnetic sensor 32 is connected to the current flows in the primary side coil 30, as a result of which a magnetic field is generated around the secondary side coil 31 In the current flows as the induced electromotive force is formed according to the generation of the magnetic field.

The current generated by the induced electromotive force in the secondary side coil 31 is sent to the rectifier 34 along the circuit. The rectifier 34 converts the AC current flowing from the secondary side coil 31 into a DC current and sends the same to the charger 35, and the charger 35 receives the current sent from the rectifier 24 to receive a voltage state of the rechargeable battery 610. The current is sent to the rechargeable battery 610 until the high voltage is reached, and when the high voltage is reached, the current flows to the rechargeable battery 610.

The control unit 36 displays the voltage state of the rechargeable battery 610 on the indicator light so that the user can check it, and performs the functions required for the electronic door lock using the current sent from the rechargeable battery 610.

When the door is opened, the magnetic sensor 32 and the magnetic 31 are separated, so that the magnetization of the magnetic sensor 32 lead 28 is weakened, the mechanical elasticity of the lead 28 becomes larger than the magnetizing force, so that the contact is dropped. do. As a result, the magnetic field of the primary side coil 30 disappears, and since the induced electromotive force is not generated in the secondary side coil 31, the current flowing in the power supply unit 530 is also cut off. The rechargeable battery 610 then supplies the current required by the controller 36 with the charged power.

In FIG. 3, the molding 29 is processed on the external exposed portions of the magnetic field generating unit 510 and the magnetic field processing unit 520 in order to pursue safety in use by not limiting the function of the apparatus and not exposing it to any contacts and moisture to the outside. Do

4 and 5 are schematic diagrams showing respective examples of power supply using the embodiment shown in FIG.

When a current flows in the magnetic field generating unit 510 supplied with power from the external power source 170, the magnetic field processing unit 520 generates a current by the induced electromotive force, and the current generated by the induced electromotive force is the power supply unit 530. It is used as a driving power source for the electronic door lock.

 In FIG. 4, the magnetic field generating unit 510 is positioned inside the striker 130 installed on the door frame 300, and the magnetic field processing unit 520 is disposed on the door 200 corresponding to the striker 130. ) Part. This shows an installation example that can be installed without any external exposure.

5 shows an installation example in which the magnetic field generating unit 510 is positioned at the upper end of the door frame 300 and the magnetic field processing unit is positioned at the upper end of the door 200 corresponding to the magnetic field generating unit 510.

While the invention has been described above based on the preferred embodiments thereof, these embodiments are intended to illustrate rather than limit the invention. It will be apparent to those skilled in the art that various changes, modifications, or adjustments to the above embodiments can be made without departing from the spirit of the invention. Therefore, the protection scope of the present invention will be limited only by the appended claims, and should be construed as including all such changes, modifications or adjustments.

According to the present invention as described above, there is no problem caused by the full discharge of the rechargeable battery by the constant charge using the external power source, the risk of inadvertent danger of the direct connection of the external power source by using the device using the induction electromotive force, and troublesome installation There is no worry about outages such as power outages and blackouts. In addition, by supplying abundant power in accordance with the constant charge can provide a variety of additional functions as well as the basic functions of the electronic door lock, there is an effect that can further strengthen the basic and important functions of the electronic door lock security and ease of use.

1 is a schematic diagram showing a conventional electronic door lock using a battery as a power source,

2 is a schematic view showing a conventional electronic door lock using an external power source,

3 is a block diagram showing an embodiment of a power supply device for an electronic door lock according to the present invention;

4 and 5 are schematic diagrams showing respective examples of power supply using the embodiment shown in FIG.

Claims (6)

A primary coil installed in a predetermined door frame to generate a magnetic field by receiving external power; A secondary side coil installed in a predetermined door at a position facing the primary side coil to convert induced electromotive force by a magnetic field generated by the primary side coil into a current; A power supply unit which charges using the current generated by the secondary side coil and provides driving power for performing the function of the door lock. Power supply of the electronic door lock device comprising a. The method of claim 1, The primary side coil, the power supply of the electronic door lock device, characterized in that installed in the inner portion of the striker preset in the door frame. The method of claim 1, The primary side coil is installed at a portion forming an interface with the door at the upper end of the door frame, The secondary side coil, the power supply of the electronic door lock device, characterized in that installed in the upper end of the door in a position facing the primary side coil. The method of claim 1, A magnetic installed in the door, Magnetic sensor is installed in the door frame of the position facing the magnetic switch to switch between the external power source and the primary coil according to the proximity of the magnetic Power supply of the electronic door lock device characterized in that it further comprises. The method according to any one of claims 1 to 4, The power supply unit, A rectifier for converting the alternating current generated by the secondary side coil into a direct current; A charger for charging the DC current to the power supply according to the charging state of the power supply Power supply of the electronic door lock device comprising a. The method of claim 4, wherein The primary coil, the magnetic sensor, the secondary coil, and the magnetic power supply device of the electronic door lock device, characterized in that the molding process.