KR20040105512A - Door Lock Apparatus by Using Copper Foil Sensor - Google Patents

Abstract

PURPOSE: An automatic door locking apparatus using sensors is provided to accurately control a locking operation of a door by detecting a change of capacitance when an object approaches a sensor. CONSTITUTION: An automatic door locking apparatus using sensors includes copper film sensor(230), mortise lockset(210) and a dead bolt(220). A mortise lockset having a dead bolt(220) perform the locking operation of the door is implemented on a predetermined position of the door. A copper film sensor(230) is implemented on a predetermined position of the mortise lockset(210), in a way that the copper film sensor is placed on an exposed terminal portion of the dead bolt. The copper film sensor is electrically coupled with the mortise lockset and senses a change of capacitance when the door approaches the copper film sensor.

Description

Door Lock Apparatus by Using Copper Foil Sensor

The present invention relates to a door automatic locking device using a sensor, and more particularly, to close the door accurately by installing a copper foil sensor on the door that detects the sensing object by a change in capacitance when the sensing object approaches the sensor. The present invention relates to a door automatic locking device that uses a sensor to sense and precisely control a door lock.

In general, the locking device is widely used in general houses or apartments, businesses, offices, and the like. Typically, locks are used for entrance doors, bank vaults, and access controls to restrict access to specific areas. A door lock mounted on a front door or the like is generally equipped with a latch bolt (or trigger bolt) and a mortise lock having a dead bolt. The latch bolt and the dead bolt are mounted on the side of the mortise so that they can be manipulated by the door handle and the rotary knob.

As a lock device such as a door lock, a mechanical method that is to be manually locked and unlocked, and an electric method that can be locked / unlocked using a solenoid or a motor are generally used. The electronic locking device includes a device for inputting a password, which is widely used recently, for example, an electronic device for determining an accessor using a keypad device, a fingerprint reader device, a card reader, or the like. Or digital) locking device. The electronic lock provides high security compared to other methods by the electronic authentication process of the accessor authentication. In addition, a door lock device using a magnet that detects an open / closed state of the door using a magnetic and locks the door is used as the electronic lock device.

1 is a perspective view showing a door locking device using a conventional magnet.

The conventional door locking device 100 has a configuration including a door 110, a door frame 120, an inner operation unit 130, a magnetic sensor 140, a magnetic body 150 and the like.

In the above configuration, the inner operation unit 130 is composed of a keypad for inputting a handle and a password that can open and close the door, a motor for wandering the dead bolt, and the like.

As shown in FIG. 1, the magnetic sensor 140 is electrically connected to and attached to an upper portion of the inner operation unit 130, and a magnetic body 150 is installed in the door frame 120 corresponding to the magnetic sensor 140. Operation control of the magnetic sensor 140 and the motor is installed to be controlled by a circuit board installed inside the inner operation unit 130.

The conventional door lock device 100 configured as described above, when the user opens the door 110 to enter and close the building, and then closed, the magnetic sensor 140 attached to the door 110 is the door frame at the same time the door 110 is closed Approach of the magnetic body 150 installed in the 120 is detected by the magnetic force, and the motor is controlled by an electrical signal to protrude the dead bolt to execute the closing operation.

However, in the conventional door lock device 100 operating as described above, after the predetermined time has elapsed from the time when the magnetic sensor 140 recognizes the proximity of the magnetic material 150, the motor is operated after 3 seconds elapsed, for example, and dead. To protrude the bolt, the door 110 is not yet completely closed, the approach is detected by the magnetic force of the magnetic body 150 to operate the motor to protrude the dead bolt occurs. In this case, since the door 110 is not completely closed, the user had to approach the door 110 to operate the inner operation unit 130 to release the dead bolt from the protrusion and close the door 110. .

In addition, if a predetermined time elapses unconditionally after the door 110 is opened, the motor may be set to automatically operate a dead bolt. Even in this case, a malfunction may occur in the locking process by executing automatic locking in a state in which the closing of the door 110 is not properly sensed.

Therefore, a technology for precisely controlling the locking of the door 110 by accurately detecting the closed state of the door 110 in the automatic locking process of the door 110 is required.

In order to solve the above problems, the present invention, by installing a copper foil sensor to the door to detect the detection object by the change in capacitance when the detection object is close to the sensor to accurately detect the closing of the door to precisely lock the door It is an object of the present invention to provide an automatic door locking device using a sensor that enables control.

1 is a perspective view showing a door locking device using a conventional magnet,

2 is a configuration diagram schematically showing a configuration of a door automatic locking device using a sensor according to an embodiment of the present invention;

3 is a perspective view showing an appearance of a door locking device in which a copper foil sensor is installed.

<Description of Symbols for Main Parts of Drawings>

100: conventional door lock 110: door

120: door frame 130: inner operation

140: magnetic sensor 150: magnetic material

200, 300: door lock 210: Mortis device

220: dead bolt 230: copper foil sensor

310: outer door lock cover 320: inner door lock cover

330: keypad 340: latch bolt

350: inner door handle 360: outer door handle

In order to achieve the above object, the present invention, a door lock device for detecting the opening and closing of the door by a change in capacitance caused by the proximity of the door, the mortis device having a dead bolt for locking the door The copper foil sensor is installed at a fixed position of the door, and the copper foil sensor is installed at a constant position of the mortise device. The copper foil sensor is installed at an end of the door where the dead bolt protrudes, and the copper foil sensor is electrically connected to the mortise device. It provides a door lock device characterized in that.

In addition, according to another object of the present invention, a door lock device for detecting the opening and closing of the door by the change in capacitance caused by the proximity of the door, the outer door lock cover and the inner door lock cover is coupled between the door, In the door at the position where the outer door lock cover and the inner door lock cover are coupled, a mortise device is installed in a portion facing the door frame, a dead bolt protrudes from the mortise device, the portion facing the door and the door frame Provides a door lock device, characterized in that the copper foil sensor for causing the change in the capacitance is installed at the bottom or top of the Mortis device.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. First of all, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are used as much as possible even if displayed on different drawings. In addition, in describing the present invention, when it is determined that the detailed description of the related well-known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted.

In the present invention, by accurately detecting the closing of the door to precisely control the dead bolt to lock the door, and attaching a copper foil sensor to the door to detect the closing of the door, the door closed through the copper foil sensor When this is detected correctly, the dead bolt is controlled to lock the door.

2 is a configuration diagram schematically showing the configuration of the door automatic locking device 200 using a sensor according to an embodiment of the present invention.

The door locking device 200 according to the present invention installs a Mortis device 210 having a dead bolt 220 at a predetermined position of the door 110, and the copper foil sensor 230 at a predetermined position near the Mortis device 210. ), But installed on the end portion of the door 110, the dead bolt 220 is protruding, the copper foil sensor 230 has a configuration that is electrically connected to the Mortis device (210).

The copper foil sensor 230 transmits a change in capacitance generated when the sensing target object is in close proximity or contact with the sensor as a sensing signal to the Mortis device 210. Therefore, the mortise device 210 operates the dead bolt 220 when receiving the sensing signal from the copper foil sensor 230.

The copper foil sensor 230 has a capacitance C as shown in Equation (1).

In Equation 1, ε represents the permittivity, S represents the junction area of the copper foil sensor 230 segment, and L represents the distance between the sensor segment and the door frame segment. Here, the sensor slice represents a slice attached to the copper foil sensor 230, and the door frame slice represents a slice attached to the door frame 120. When the door 110 is closed, the sensor fragments and the door frame fragments face each other in close proximity or contact.

As can be seen from Equation 1, the distance L between the sensor piece and the door frame piece is formed when the door 110 is completely closed, so there is no change. Therefore, the capacitance C of the copper foil sensor 230 depends on the bonding area S of the sensor piece and the door frame piece.

That is, since the door piece and the sensor piece are completely separated in the state in which the door 110 is opened, the electrostatic capacitance C of the copper foil sensor 230 is zero (0). However, when the door 110 is closed slowly, the area of the sensor piece is gradually in contact with the door piece, and when the door 110 is completely closed, the sensor piece and the door piece are completely in contact with each other. The capacitance C is the maximum. The copper foil sensor 230 transmits a sensing signal to the Mortis device 210 when the change in capacitance is surely generated, for example, when the capacitance is 80% or more of the maximum capacitance or when the capacitance is 90% or more. Will be done.

In the case of the copper foil sensor 230, the sensing distance thereof is very short as compared with the conventional magnetic sensor 140. In the conventional magnetic sensor 140, even if the sensor is operated even if a certain distance or more within the range of the magnetic force with respect to the sensing object, the magnetic sensor 140 is installed in the door 110 while the door 110 is still closed. Even though the dead bolt is activated, the copper foil sensor 230 can be sure that the change in capacitance occurs only when the sensing object comes into contact with the copper foil sensor 230 or is spaced within a few mm from the copper foil sensor 230, so that the door The dead bolt 220 can only be operated when 110 is closed correctly.

Therefore, the dead bolt 220 is operated only when the door 110 is completely closed.

3 is a perspective view showing an external appearance of the door locking device 300 in which the copper foil sensor 230 is installed.

As shown in FIG. 3, the door lock device 300 is coupled to the outer door lock cover 310 and the inner door lock cover 320 with the door 110 therebetween. The outer door lock cover 310 is provided with a keypad 330 for inputting a password when the door 110 is unlocked at an upper portion thereof, and has an outer door handle 360 at a lower portion thereof. In addition, although not shown, the outer door lock cover 310 includes a motor and a mechanical assembly for controlling the mechanical locking / unlocking state of the outer door handle 310.

Although not shown, the inner door lock cover 320 includes a control circuit for operating the dead bolt 220 when receiving a sensing signal, a battery for supplying operating power, and an inner door handle 350 at the bottom thereof. It is.

When the user manipulates the outer door handle 310 or the inner door handle 320 from side to side, the latch bolt 340 moves in and out according to the manual operation. That is, the outer door handle 310 and the inner door handle 320 are connected to a rotating shaft (not shown), and the latch bolt 340 is mechanically connected to the rotating shaft, so that the outer door handle 310 or the inner door handle ( The rotating shaft rotates according to the rotational movement of the 320, and thus the latch bolt 340 mechanically connected is operated.

In the door 110 at the position where the outer door lock cover 310 and the inner door lock cover 320 are coupled, the mortise device 210 is installed at a portion contacting the door frame 120, and the mortise device 210 has a dead bolt ( 220, latch bolt 340 is provided.

In FIG. 3, the copper foil sensor 230 according to the present invention is installed at a lower end of the mortise device 210, that is, below the dead bolt 220.

The Mortis device 210 typically includes a dead bolt 220 and a latch bolt 340, which is a dead area for maintaining the locked state of the door 110 and a latch for maintaining the closed state. Has an area. The latch bolt 340 is located directly above the dead bolt 220 as shown in FIG. That is, as the door 110 is closed, the latch bolt 340 is inserted and protruded.

When the user closes the door 110 that is opened in the door lock device 300 configured as described above, when the door 110 is completely closed, the copper foil sensor 230 and the surface of the door frame 120 on the wall are in close contact or contact. The copper foil sensor 230 causes a change in capacitance, and transmits the change in capacitance to a control circuit inside the mortise device 210 as a sensing signal.

At this time, the portion of the mortise device 210 installed in the door 110 coincides with the groove portion formed in the wall door frame 120, and the control circuit of the mortise device 210 controls the dead bolt 220. The 220 does not protrude until the control signal is applied from the control circuit of the mortise device 210, but is inserted into the mortise device 210 according to the control signal from the control circuit of the mortise device 210 and then protrudes. It is inserted into the groove portion in the door frame 120.

Therefore, the control circuit of the mortise device 210 controls the dead bolt 220 to execute the lock, thereby maintaining the locked state.

Meanwhile, in the above embodiment, although the copper foil sensor 230 is positioned at the upper or lower portion of the mortise device 210, the copper foil as the magnetic sensor 140 installed in the door locking device 100 shown in FIG. The sensor 230 may be installed at a separate location without being installed in the mortise device 210, and an internal control circuit may be provided in the mortise device 210.

According to the present invention, a sensor for accurately controlling the door lock by precisely detecting the closing of the door by installing a copper foil sensor on the door to detect the sensing object by the change in capacitance when the sensing object is close to the sensor It is possible to realize the door automatic locking device using.

The above description is merely illustrative of the technical idea of the present invention, and those skilled in the art to which the present invention pertains may make various modifications and changes without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

As described above, according to the present invention, the lock of the door 110 is closed, as compared with the prior art in which the lock has to be performed after a predetermined time or the lock is performed by the magnetic sensor, which has to perform a cumbersome release operation according to an incomplete lock operation. By reliably detecting and precisely controlling the locking operation, there is no need to perform a door unlocking operation cumbersomely, and the convenience is greatly improved.

When the copper foil sensor is used, the frequency of malfunction of the door lock is significantly reduced than when using the conventional magnetic sensor, and the convenience of using the door and the life of the mortise device 210 can be maintained for a long time.

Claims (9)

A door lock device that detects the closing of the door 110 by the change in the capacitance caused by the proximity of the door 110 to lock the door, The mortise device 210 provided with the dead bolt 220 for locking the door 110 is installed at a predetermined position of the door 110, The copper foil sensor 230 is installed at a predetermined position of the mortise device 210, and is installed at an end portion of the door 110 from which the dead bolt 220 protrudes. The copper foil sensor 230 is a door lock device, characterized in that electrically connected to the Mortis device (210). The method of claim 1, The copper foil sensor 230 is a door lock device, characterized in that for transmitting the change in the capacitance generated when the door 110 close to or in contact with the sensor as a sensing signal to the Mortis device (210). The method of claim 2, The mortise device 210 operates the dead bolt 220 when the sensing signal is received from the copper foil sensor 230, and locks the door 110 by maintaining the door. . The method of claim 1, The copper foil sensor 230 is a door lock device, characterized in that installed below or above the dead bolt (220). The method of claim 1, The copper foil sensor 230 is installed in the door 110 separately from the mortise device 210 by a predetermined position, and the control circuit for receiving the sensing signal from the copper foil sensor 230 is the mortise device 210. Door lock, characterized in that installed inside. As a door lock device for detecting the opening and closing of the door 110 by the change in capacitance caused by the proximity of the door 110, The outer door lock cover 310 and the inner door lock cover 320 are coupled with the door 110 therebetween, In the door 110 at the position where the outer door lock cover 310 and the inner door lock cover 320 are coupled, a mortise device 210 is installed at a portion facing the door frame 120, and the mortise device 210 is provided. ) Dead bolt 220 is protruded, The copper foil sensor 230 causing the change in the capacitance is installed at the lower end or the upper end of the mortise device 210 among the parts facing the door 110 and the door frame 120. Door lock, characterized in that. The method of claim 6, When the door 110 is completely closed, the surface of the door frame 120 is in close contact with or in contact with the copper foil sensor 230, and the copper foil sensor 230 has a capacitance Causing a change, and transferring the change in capacitance to a control circuit inside the mortise device (210) as a sensing signal. The method of claim 7, wherein The outer door lock cover 310 is provided with a keypad 330 for inputting a password when the door 110 is unlocked, an outer door handle 360, and a machine of the outer door handle 310. Built-in motor and mechanical assembly for controlling the locking / unlocking state The inner door lock cover 320 is provided with a control circuit for operating the dead bolt 220 when receiving the sensing signal, a battery for supplying operating power and an inner door handle 350. Door lock. The method of claim 7, wherein The copper foil sensor 230 is a door lock device, characterized in that is installed separately from the mortis device 210 by a predetermined position on the door (110).