KR200322421Y1 - Device for Sensing Opening and Shutting of Door Key Cover by Using Magnetic Sensor - Google Patents

Abstract

The present invention relates to an opening / closing detection device of a door key cover using a magnetic sensor, and more particularly, a key cover that includes a key input unit and a key cover that covers a key input unit, that is, a key cover. A door key device comprising: a door key cover open / close detection device configured to detect whether a key cover is opened or closed by using a magnetic sensor and a magnet provided in a key holder and a key cover.

The present invention is a door key device comprising a key cover and a key holder for key input to a key input unit provided in the key holder, the magnet 200 and the magnet to determine whether the key cover 104 is opened or closed Provided is a door key device having a magnetic sensor 210 for detecting a magnetic force of the (200).

According to the present invention, it is possible to check whether the key cover is opened or closed using a magnetic sensor without mechanical contact, thereby preventing the switch from malfunctioning due to mechanical friction and ensuring the semi-permanent life of the sensor due to the characteristics of the magnet. .

Description

Device for Sensing Opening and Shutting of Door Key Cover by Using Magnetic Sensor}

The present invention relates to an opening / closing detection device of a door key cover using a magnetic sensor, and more particularly, a door including a key holder having a key input unit and a key cover covering the key input unit. The key device relates to an opening / closing detection device for a door key cover that detects whether the key cover is opened or closed using a magnetic sensor and a magnet provided in the key holder and the key cover.

A door key device having a key cover and a key holder is generally a key device by a sliding method in which the key cover slides up and down in relation to the key holder.

1A is a perspective view of a conventional sliding key device.

The conventional sliding key device is provided with a key input unit 106 and a key holder 102 fixed to a door or a building wall and a key cover 104 for covering the key input unit 106.

The key input unit 106 provided in the key storing unit 102 is composed of ten numbers and special characters of '#' and '*' as shown in FIG. 1 to allow a password to be entered. -Pad). Recently, however, a door key provided with an electronic information key having an EEPROM (Electrically Erasable Programmable Read-Only Memory) storing an ID code and a key reading device for authenticating the electronic information key by checking the ID code of the electronic information key The device is in use.

In addition, in addition to the keypad, a device that can open and close the door by recognizing different physical characteristics of each person by a method such as fingerprint recognition or iris recognition may be used.

The key cover 104 is configured to operate up and down in relation to the key holder 102 as shown in FIG. 1 to protect or conceal the key input unit 106 provided in the key holder 102. Will be

On the other hand, an electronic key device such as the keypad, the electronic information key reading device, the fingerprint recognition, or the iris recognition key device has a problem in that power consumption is increased when the authentication key input mode for key input is continuously maintained. Accordingly, the electronic key device provided in the key input unit 106 may be switched to the authentication key input mode by detecting the opening and closing of the key cover 104.

FIG. 1B is a view illustrating a state in which the micro switch 110 for detecting opening and closing of the key cover 104 in the sliding key device is installed in the sliding key device.

The micro switch 110 is a switch for switching the key input unit provided in the key holder 102 to the authentication key input mode by sensing the operation of the structure.

When the key cover 104 slides up along the rail provided in the key holder 102, the projection 108 provided in the key cover 104 switches the micro switch 110 provided in the key holder 102. The plate 112 is pushed and the switching plate 112 comes into contact with the contact point 114 to indicate that the key cover 104 is open. Thereafter, when the key cover 104 is lowered and the switching plate 112 is separated from the contact point 114, the key cover 104 is closed.

However, since the micro-switch 110 is mechanically operated according to the operation of the key cover 104, the contact part is worn out when used for a long time, so that the movement of the key cover 104 cannot be accurately sensed and the switching plate ( When the restoring force of 112) decreases, there is a problem that a malfunction will occur. In order to prevent such a malfunction, when a certain number of times of use have elapsed, there is a problem that the micro switch 110 needs to be replaced.

In addition, in the case of the sliding key device, the key cover 104 does not move up and down in relation to the key storing unit 102, for example, but the key cover 104 operates left and right in relation to the key storing unit 102. In this case, there is a limit in detecting the movement of the key cover 104 using the micro switch 110.

In order to solve the above problems, the present invention, the magnetic cover and the magnetic sensor for detecting the magnetic force of the magnet in the key cover and the key holder of the key device can detect whether the key cover is opened or closed using the magnetic sensor. It is an object of the present invention to provide a key cover opening and closing detection device of a door key device.

1A is a perspective view of a conventional sliding key device,

1B is a view illustrating a state in which a micro switch for detecting a movement of a key cover in a sliding key device is installed in the sliding key device;

2 is a side cross-sectional view illustrating a state in which a magnet and a magnetic sensor are installed in a key cover and a key holder of a sliding key device in a device for detecting an opening and closing of a key cover using a magnetic sensor according to a preferred embodiment of the present invention;

3 is a plan view illustrating a state in which a magnet and a magnetic sensor are installed in a key cover and a key holder of a sliding key device in a device for detecting an opening and closing of a key cover using a magnetic sensor according to an embodiment of the present invention;

Figure 4 is a block diagram showing the operation of the main controller according to the operation of the magnetic sensor in the opening and closing detection device of the key cover using the magnetic sensor according to an embodiment of the present invention.

<Description of Symbols for Main Parts of Drawings>

102: key storage 104: key cover

106: key input unit 108: protrusion

110: micro switch 112: switching plate

200: magnet 210: magnetic sensor

400: main controller 402: display unit

404: power supply

In order to achieve the above object, the present invention comprises a key cover and a key holder, the door key device for key input to the key input unit provided in the key holder, it is determined whether the key cover 104 is opened or closed To provide a door key device comprising a magnet 200 and a magnetic sensor 210 for detecting the magnetic force of the magnet 200.

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 known configuration or function may obscure the subject matter of the present invention, the detailed description thereof will be omitted.

First, a configuration for detecting opening and closing of a key cover in a sliding key device will be described.

2 is a key cover 104 and a key holder 102 of a sliding key device in the opening and closing detection device of the key cover using the magnetic sensor according to an embodiment of the present invention, the magnet 200 and the magnetic sensor 210 Figure 3 is a side cross-sectional view showing a state installed, Figure 3 is a key cover opening and closing detection device using a magnetic sensor in accordance with a preferred embodiment of the present invention, the magnet 200 and the magnetic sensor 210 sliding key device It is a top view which shows the state attached to the key cover 104 and the key storing part 102 of this.

The magnetic sensor 210 detects a magnetic force of the magnet 200 and detects magnetic properties or changes thereof as changes in electromotive force, electrical resistance, or the like, and identifies voltages, currents, materials, or defects. Say the sensor.

In order to detect whether the key cover 104 is opened or closed, a magnet 200 is attached to the key cover 104, and a magnetic sensor 210 is attached to an upper end of the key holder 102.

When the key cover 104 is slid upward and the portion to which the magnet 200 is attached comes to the portion to which the magnetic sensor 210 provided in the key holder 102 is attached, the magnetic sensor 210 is a magnet ( The magnetic force of the 200 is sensed and a signal indicating that the key cover 104 is opened is sent to the main controller 400 to be described later. In addition, when the key cover 104 is moved downward, the magnet 200 is moved away from the magnetic sensor 210 to reduce the magnetic force sensed by the magnetic sensor 210. The magnetic sensor 210 senses a decrease in magnetic force and sends a signal to the main controller 400 that the key cover 104 is closed.

On the other hand, in the preferred embodiment of the present invention, the attachment portion of the magnet 200 and the magnetic sensor 210 may be interchanged. That is, even if the magnet 200 is provided in the key holder 102 and the magnetic sensor 210 is attached to the key cover 104, the above effects can be obtained.

In addition, when the attachment position of the magnetic sensor 210 and the magnet 200 is changed, for example, when the attachment position of the magnet 200 is changed upward than that shown in FIG. 2, the opening and closing signal of the key cover 104 is controlled. (400) can be sent earlier. In addition, by adjusting the sensitivity of the magnetic sensor 210, it is possible to adjust the opening and closing signal transmission time of the key cover 104. For example, since the magnetic sensor 210 is a sensor that detects the magnetic force of the magnet 200 and generates a signal, when the magnetic sensor 210 weakly sets the magnetic force value to which the magnetic sensor 210 reacts, the magnetic cover 210 does not have to slide much up. If the sensor 210 reacts earlier and the magnetic force value of the magnetic sensor 210 is set to a large value, the magnetic sensor 210 reacts only when the key cover 104 slides a lot upward.

Meanwhile, the operating range of the magnetic sensor 210 may be adjusted by adjusting the size of the magnet 200. As described above, since the magnetic sensor 210 is a sensor for detecting the magnetic force of the magnet 200, when the length of the magnet attached to the door key device of the present invention is lengthened in the longitudinal direction, the key cover 104 is opened. It is possible to transmit a signal that the key cover 104 is open even if not.

Figure 4 is a block diagram showing the operation of the main control unit 400 according to the operation of the magnetic sensor 210 in the opening and closing detection device of the key cover using the magnetic sensor according to an embodiment of the present invention.

The signal sensed by the magnetic sensor 210 is transmitted to the main controller 400 of the door key device. The main controller 400 determines an operation mode of the key input unit 106 according to the signal transmitted from the magnetic sensor 210.

When the key cover 104 is raised upward, the magnetic sensor 210 detects the magnetic force of the magnet 200, and when the signal is transmitted to the main controller 400, the main controller 400 is in the state of the key input unit 106. Switch to authentication key input mode. Accordingly, the person who wants to open the door can open and close the door by key input to the key input unit 106. In addition, when the key input is terminated and the key cover 104 is closed, the magnetic sensor 210 detects that the magnetic force of the magnet 200 is reduced and transmits the signal to the main control unit 400 and the main control unit 400 Cancels the authentication key input mode of the key input unit 106.

In addition, the main control unit 400 may be further connected to the display unit 402 or the power supply unit 404 to control the operation of the display unit 402 or the power supply unit 404.

The display unit 402 may be connected to a screen display device, an LED, a buzzer, or the like. When the magnetic sensor 210 detects a signal indicating that the key cover 104 is opened and transmits the signal to the main controller 400, the main controller 400 displays the signal on the display unit 402. That is, the key cover 104 may be opened to the user through a screen display device or an LED or a buzzer. In particular, such a function may warn the user when the user does not close the key cover 104 after the user inputs the key through the key input unit 106.

In addition, when the display unit 402 receives the signal that the key cover 104 is opened, the display unit 402 switches the key input unit 106 to the authentication key input mode and simultaneously operates a back light behind the key input unit 106. This allows the user to facilitate key input in dark places.

In addition, in operation of the power supply unit 404, the main controller 400 connects or cuts off power transmission from the power supply unit 404 to the key input unit 106 or the like depending on whether the key cover 104 is opened or closed. You can get the effect.

On the other hand, the key cover 104 may not be operated only up and down, but in some cases, a part of the key cover 104 may be coupled to the key holder 102 by a hinge to be operated left and right. In addition, the upper part of the key cover 104 may be coupled to the upper part of the key holder 102 to be combined in a folder type.

When the key cover 104 is moved from side to side or folded up and down as described above, it may be difficult to check whether or not a contact is made using the conventional micro switch 110. However, when the magnet 200 and the magnetic sensor 210 according to the present invention are utilized, even when the key cover 104 moves left and right, it is possible to easily detect whether the key cover 104 is opened or closed.

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 variations 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 explain, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be interpreted by the following claims, and all technical ideas falling within the scope of the present invention should be interpreted as being included in the scope of the present invention.

As described above, according to the present invention, it is possible to check whether the key cover is opened or closed using a magnetic sensor without mechanical contact, thereby preventing malfunction of the switch due to mechanical friction and ensuring semi-permanent life due to the characteristics of the magnet. There is an advantage.

In addition, according to the present invention, there is an advantage in that the timing of determining whether the key cover is opened or closed can be adjusted by adjusting the sensitivity of the magnetic sensor or adjusting the position of the magnet or the magnetic sensor.

In addition, according to the present invention, there is an advantage that the key cover and the key holding part constituting the key device can be easily detected whether the key cover is opened or closed even when the key cover and the key holder are operated in a sliding manner or folded up and down.

Claims (9)

A door key device comprising a key cover and a key storing part for inputting a key to a key input part provided in the key storing part, Door key device characterized in that it comprises a magnet (200) for determining whether the key cover 104 is opened or closed and a magnetic sensor (210) for detecting the magnetic force of the magnet (200). The method of claim 1, Main control word for controlling whether to switch the authentication key input mode of the electronic key input device of the key input unit 106 provided in the key storing unit 102 from the opening / closing signal of the key cover 104 transmitted from the magnetic sensor 210. Door key device further comprises a portion (400). The method of claim 2, And a display unit 402 controlled by the main controller 400 to indicate whether the key cover 104 is opened or closed according to the open / close signal of the key cover 104 transmitted from the magnetic sensor 210. Door key device, characterized in that. The method of claim 2, The door further comprises a power supply unit 404 is controlled to supply and cut off by the main control unit 400 in accordance with the opening and closing signal of the key cover 104 transmitted from the magnetic sensor 210. Key device. The method according to any one of claims 1 to 4, And the key cover (104) slides up and down in relation to the key holder (102). The method according to any one of claims 1 to 4, The key cover 104 is a door key device, characterized in that coupled to the key holder 102 is hinged (Hinge) to move from side to side. The method according to any one of claims 1 to 4, The upper end of the key cover 104, door key device, characterized in that coupled to the upper end of the key holder (102) in the form of a folder (Folder). The method according to any one of claims 1 to 4, The magnet (200) is provided in the key cover (104), the magnetic sensor 210 is a door key device, characterized in that provided in the key holder (102). The method according to any one of claims 1 to 4, The magnet 200 is provided in the key holder 102, the magnetic sensor 210 is a door key device, characterized in that provided in the key cover (106).