KR102251429B1 - Digital door lock with self-power system - Google Patents

Abstract

The present invention relates to a digital door lock with a self-generating system and comprises: an external body (100) mounted on the outside of a door (1), provided with a key input unit (110), and provided with an outdoor handle (120); an inner body (200) mounted on the inside of the door (1) and provided with an indoor handle (210); a dead bolt (310) and a latch bolt (320) installed inside the door (1), inserted into a hole (5) of a door frame (3), and inserted into the door (1) and drawn out from the hole (5) by rotating the outdoor handle (120) when unlocking through the key input unit (110); and a power supply unit (400) for supplying power to the key input unit (110). The present invention can be used semi-permanently without replacing batteries, etc. by implementing a self-generating system using a thermoelectric element in a digital door lock.

Description

Digital door lock with self-power system

The present invention relates to a digital door lock, and to a digital door lock equipped with a self-powered system that is mounted and used in an entrance door.

The main key type digital door lock mounted on the door handle is often replaced because of feeling uneasy about the existing door lock, and recently, it has become popular enough to run as a standard for new villas.

There are two types of digital door locks: a main key-type door lock that functions as both a door lock and a handle by attaching a door lock to the door handle, and an auxiliary key-type door lock that is installed at the existing auxiliary key position and the door handle remains the same.

The digital door lock has the advantage of not having to carry a key because it can be automatically locked by simply closing the door and can be opened with a password, NFC, or fingerprint recognition.

However, door locks using batteries may have the hassle of replacing the batteries if they are discharged after a long period of time, and may not operate suddenly if the temperature drops sharply while the batteries are depleted.Therefore, do not open the door after going out. There are also difficult situations that cannot be done.

Registered Utility Model Publication No. 0464590 (registered on 2013.01.03)

The present invention was conceived to solve the above problems, and an object of the present invention is to implement a self-generation system using a thermoelectric element in a digital door lock, so that it can be used semi-permanently without replacement of batteries or batteries. It is to provide a digital door lock equipped with this.

A digital door lock equipped with a self-powered system according to an embodiment of the present invention for solving the above problems is mounted on the outside of the door, provided with a key input unit, and mounted on the inside of the door and the outer body provided with an outdoor handle. An inner body equipped with a side handle and a dead bolt installed inside the door and inserted into the hole of the door frame and inserted into the door and drawn out from the hole by rotating the outdoor handle when unlocking through the key input unit And a power supply unit for supplying power to the latch bolt and the key input unit.

The power supply unit is arranged to be in contact with the inner body on one side and to the outer body on the other side to generate an electromotive force due to a temperature difference between the inside and the outside of the door, generated from the thermoelectric element and the thermoelectric element. It includes a charging unit for storing and charging the electromotive force.

The thermoelectric element has a first aluminum substrate on one side disposed to be in contact with the inner body, and a second aluminum substrate on the other side disposed to be in contact with the outer body, and the first aluminum substrate and the second The aluminum substrate is connected by a P-type thermoelectric element and an N-type thermoelectric element, and the connection between the first and second aluminum substrates, the P-type thermoelectric element, and the N-type thermoelectric element is performed with copper. It is in the form of a module, and lead wires are connected to the P-type thermoelectric element and the N-type thermoelectric element, respectively.

The first aluminum substrate and the second aluminum substrate are flexible substrates.

An antibacterial film is attached to the key input portion of the external body, and the antibacterial film includes at least one of copper particles and silver nanoparticles.

The external body is provided with an emergency power supply to open the door by contacting the battery from the outdoor side in case of an emergency.

The digital door lock of the present invention has a power supply unit that converts the temperature difference inside and outside the door into electric energy, stores or charges it, and supplies power required for driving the digital door lock, so that batteries or batteries are replaced even after a certain period of time has elapsed. There is an effect that can be used semi-permanently without it.

In addition, the present invention is provided with an emergency power supply unit to open the door by contacting the battery from the outdoor side to the external body, it is possible to quickly process the power supply unit, there is an effect that can effectively cope with a failure.

In addition, in the present invention, since an antibacterial film including at least one of copper particles or silver nanoparticles is attached to the key input portion of the external body, there is an effect of preventing infection due to bacteria or viruses.

1 is a block diagram showing a digital door lock equipped with a self-power system according to an embodiment of the present invention.
2 and 3 are operation diagrams showing a digital door lock equipped with a self-powered system according to an embodiment of the present invention.
4 is a block diagram showing a power supply of a digital door lock equipped with a self-powered system according to an embodiment of the present invention.
5 is a block diagram showing a power supply of a digital door lock equipped with a self-power system according to another embodiment of the present invention.
6 is a cross-sectional view showing a layout view of a power supply unit according to another embodiment of the present invention.
7 is an enlarged cross-sectional view of the power supply of FIG. 6.

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

1 is a block diagram showing a digital door lock equipped with a self-powered system according to an embodiment of the present invention, and FIGS. 2 and 3 are operation diagrams showing a digital door lock equipped with a self-powered system according to an embodiment of the present invention. .

As shown in FIG. 1, a digital door lock (hereinafter, digital door lock) 10 equipped with a self-powered system includes an outer body 100, an inner body 200, a dead bolt 310 and a latch bolt 320, and It includes a power supply unit 400.

The outer body 100 is mounted on the outside of the door 1. The external body 100 is provided with a key input unit 110 and an outdoor handle 120 is provided. The key input unit 110 may be a button type for pressing a password or a touch pad type with light. The key input unit 110 may have an imaginary number function for security. The imaginary number function is a function that opens the door by pressing any number at random and entering the correct password at the end.

The external body 100 further includes a fingerprint recognition unit 130 and a card key recognition unit 140. The fingerprint recognition unit 130 enables an access method through a fingerprint, prevents concerns about password peepholes, and reduces the stress of memorizing passwords.

The external body 100 may further include an emergency power supply unit 150. When the charging unit 430 is not charged due to a failure of the power supply unit 400, which will be described later, the emergency power supply unit 150 contacts the battery to open the door.

The inner body 200 is mounted on the inside of the door 1 and is provided with an indoor handle 210. The inner body 200 includes an open/close switch 220 and a volume control switch 230. The open/close switch 220 is an automatic/manual locking switch. The inner body 200 is further provided with a registration button 240. The registration button 240 is a reset button for initial setting and registration of a password.

The interior handle 210 may open the door by rotating it by a predetermined angle or pressing it down. A safety button 250 may be provided on the indoor handle 210. The safety button 250 may lock or release the rotation function of the indoor handle 210.

The inner body 200 further includes a manual switching device 260. The manual opening and closing device 260 may lock the door 1 or release the locked state by turning it to the left or right.

As shown in FIGS. 2 and 3, the dead bolt 310 and the latch bolt 320 are provided in the locking device assembly 300 installed inside the door 1. The dead bolt 310 and the latch bolt 320 protrude to the side of the door 1 and are inserted into the hole 5 of the door frame 3, and the key input unit 110 or the fingerprint recognition unit 130 or the card key recognition When the lock is released through the part 140 or the like, by rotating the outdoor handle 120, it is inserted into the door 1 and is withdrawn from the hole 5.

The dead bolt 310 locks the door 1 and the latch bolt 320 serves to fix the door 1. For example, with the manual opening and closing device 260 turned to the left to lock the door 1, the dead bolt 310 protrudes to the side of the door 1 and is inserted into the hole 5 of the door frame 3, When the opening/closing device 260 is turned to the right to release the locked state of the door 1, the dead bolt 310 enters the door 1 and is released into the hole 5 of the door frame 3.

The locking device assembly 300 further includes a door opening sensor 330. The door opening sensor 330 is provided on the lower side of the latch bolt 320 and has a shape protruding downward like a hook shape. In a state in which the door open sensor 330 protrudes, the locking function of the door 1 is not performed, and in a state in which the door open sensor 330 is pressed, the locking function of the door 1 may be performed. The door open sensor 330 is pressed by the door frame 3 when the door 1 is closed.

The above-described digital door lock 10 has an outdoor handle 120 integrally provided on the outer body 100, and an indoor handle 210 is integrally provided on the inner body 200, so that the door 1 is held and pulled. It can be opened, so it is convenient to use.

The digital door lock 10 has an antibacterial film attached to the key input unit 110. The antibacterial film contains a copper component to prevent infection and prevent the spread of infection by contact. For example, the antibacterial film contains copper particles or silver nanoparticles to have an antibacterial function.

In addition, the digital door lock may be a method of automatically turning on and recognizing the power when a user approaches and opening the door by using a non-contact authentication method using a sensor. In this case, an infrared (IR LED) sensor may be applied as the sensor. In this case, compared to the method of pressing the password, it is more effective in preventing password exposure and preventing crime and has high stability.

Meanwhile, the power supply unit 400 illustrated in FIG. 1 automatically supplies power to the key input unit 110. In addition, the power supply unit 400 supplies power to a control circuit for driving the dead bolt 310. The power supply unit 400 is a configuration for improving the troublesome exchange of batteries or batteries in a conventional digital door lock.

The power supply unit 400 includes thermoelectric elements 410 and 420 and a charging unit 430.

The thermoelectric elements 410 and 420 are arranged such that one side of the thermoelectric element is in contact with the inner body 200 and the other side of the thermoelectric element is in contact with the outer body 100 to generate an electromotive force due to a temperature difference between the inside and the outside of the door 1. The charging unit 430 is connected to the thermoelectric elements 410 and 420 to store and charge the electromotive force generated by the thermoelectric elements 410 and 420 as power.

The power supply unit 400 converts the temperature difference between the inside and the outside of the door 1 into electric energy, stores or charges, and supplies the power required to drive the digital door lock 10. It was made to be used semi-permanently without replacement.

The charging unit 430 may be a rechargeable battery. In the embodiment, the charging unit 430 is displayed in the form of a battery, but may be provided in various shapes. In addition, in the embodiment, the opening/closing cover 270 covering the charging unit 430 is shown to show the configuration of the charging unit 430, but the charging unit 430 is attached to the inner body 200 without employing the opening/closing cover 270. It can also be provided integrally.

Specifically, the power supply unit 400 uses thermoelectric elements 410 and 420 using the Seebeck effect in which electric charges are generated on both sides due to a temperature difference, and one side is the inner body 200 and the other side is the outer body 100. It is configured to be in contact with and used as power required to drive the digital door lock 10, including the charging unit 430 that stores or charges the electromotive force generated by the temperature difference between the inside and the outside of the door 1, so that there is no replacement of batteries, etc. Make it available semi-permanently.

The Seebeck effect refers to a phenomenon in which an electromotive force is generated when a temperature difference is applied to both sides of an object, that is, a phenomenon in which heat is converted into electricity by the temperature difference.

4 is a block diagram showing a power supply of a digital door lock equipped with a self-power system according to an embodiment of the present invention.

As shown in FIG. 4, the power supply unit 400 includes thermoelectric elements 410 and 420 and a charging unit 430, but the thermoelectric elements 410 and 420 have a P-type side disposed to contact the inner body 200. The other side of the thermoelectric element 410, which is arranged to be in contact with the external body 100, is an N-type thermoelectric element 420, and an electromotive force is issued due to the temperature difference sensed by the thermoelectric elements 410 and 420, and the electromotive force is generated. The power is stored in the charging unit 430 as power and the power stored in the charging unit 430 is supplied to the key input unit 110 and the driving unit 440.

In the embodiment, the P-type thermoelectric element 410 and the N-type thermoelectric element 420 are connected to each other by means of an element that absorbs heat on one side or are connected to each other by an element that absorbs heat on one side of each other, and the other side is an element that generates heat. And can be connected to each other through a circuit to form a closed circuit. When a temperature difference between the two thermoelectric elements 410 and 420 occurs, an electromotive force is generated, and at this time, endothermic heat is generated on one side and heat is generated on the other side of the opposite side, thereby generating a stable electromotive force.

The electromotive force generated by the thermoelectric elements 410 and 420 may be stored as power in the charging unit 430, and the power stored in the charging unit 430 may be supplied to the key input unit 110 and the driving unit 440. The driving unit 440 serves to unlock the dead bolt 310 when the password stored in the key input unit 110 is correct.

In this way, the thermoelectric elements 410 and 420 may be installed to come into contact with the outer body 100 and the inner body 200, and current may be generated due to a temperature difference inside and outside the door 1. In the embodiment, winter is taken as an example.In winter, since the indoor temperature is relatively high compared to the outdoor temperature, the electromotive force is generated as heat moves from the P-type thermoelectric element 410 to the N-type thermoelectric element 420. .

Specifically, when a temperature difference occurs inside and outside the door 1, a temperature difference occurs between the P-type thermoelectric element 410 and the N-type thermoelectric element 420, and accordingly, a current is generated. As the electrons of the higher temperature side move toward the lower temperature, electromotive force (current) is generated, so when the temperature of the P-type thermoelectric element 410 (inside) is higher, the current is changed from the N-type thermoelectric element 420 to the P-type. Flow occurs in the direction of the thermoelectric element 410.

If the temperature of the N-type thermoelectric element 420 (outside) is higher, current flows from the P-type thermoelectric element 410 to the N-type thermoelectric element 420.

5 is a block diagram showing a power supply of a digital door lock equipped with a self-power system according to another embodiment of the present invention.

As shown in FIG. 5, the power supply unit 400 ′ according to another embodiment may be configured only with a thermoelectric element. That is, the power supply unit 400 ′ may implement a digital door lock without a charging unit or a battery by using a temperature difference between the inside and outside of the door 1.

In this case, the electromotive force generated by the thermoelectric element may be directly supplied to the key input unit 110 and the driving unit 440 as power.

6 is a cross-sectional view showing a layout view of a power supply unit according to another embodiment of the present invention, and FIG. 7 is an enlarged cross-sectional view of the power supply unit of FIG. 6.

6 and 7, the power supply unit 400' is disposed so that one side of the power supply unit is in contact with the inner body 200 and the other side of the door 1 is disposed so as to be in contact with the outer main body 100. It is composed of a thermoelectric element that generates electromotive force due to the temperature difference between the inside and the outside.

The thermoelectric element has a first aluminum substrate 400a' having excellent heat conduction on one side disposed in contact with the inner body 200, and a second aluminum substrate having excellent heat conduction on the other side disposed in contact with the outer body 100 (400b'), the first aluminum substrate 400a' and the second aluminum substrate 400b' are connected by a P-type thermoelectric element 410' and an N-type thermoelectric element 420, and the first aluminum The connection between the substrate 400a' and the second aluminum substrate 400b' and the P-type thermoelectric element 410' and the N-type thermoelectric element 420' is in the form of a module made of copper.

The power supply unit 400' has a structure in which lead wires R are connected to the P-type thermoelectric element 410' and the N-type thermoelectric element 420, respectively. The key input unit 110 and the driving unit 440 are connected in parallel to the two lead wires R to receive power.

The present invention described above includes a power supply unit for converting energy wasted in the form of heat into electrical energy, and the power supply unit constitutes a closed circuit with two different metals and uses the electromotive force generated in the metal when a temperature difference occurs between the metals. It is supplied as the driving power of the digital door lock.

Meanwhile, the above-described power supply unit may be manufactured in a form in which the resistance of the thermoelectric element is lowered while increasing the flexibility by connecting to the elastic substrate into which the silver nanowires are inserted. In this case, since metal particles having high thermal conductivity are added to the inside of the stretchable substrate to improve the heat transfer capability of the stretchable substrate, the power output is high, and thus it can be more efficiently used for a digital door lock without a battery. When the power supply unit is made of an elastic substrate containing metal particles, it is more efficient than installing the power supply unit 400 ′ inside the inner body () with a narrow space.

In addition, the power supply unit has a function of a sensor for diagnosing an excessive increase in indoor temperature, and thus can detect an indoor fire or the like.

The present invention has been disclosed in the drawings and in the specification, the best embodiments. Here, specific terms have been used, but these are only used for the purpose of describing the present invention and are not used to limit the meaning or the scope of the present invention described in the claims. Therefore, the present invention will be understood by those of ordinary skill in the art that various modifications and equivalent other embodiments are possible therefrom. Therefore, the true technical scope of the present invention should be determined by the technical idea of the appended claims.

1: door 3: door frame
5: hole 10: digital door lock
100: external body 110: key input unit
120: outdoor handle 130: fingerprint recognition unit
140: card key recognition unit 150: emergency power supply unit
200: inner body 210: interior handle
220: open and close switch 230: volume control switch
240: registration button 250: safety button
260: manual opening and closing device 270: cover
300: locking device assembly 310: dead bolt
320: latch bolt 330: door open sensor
400': power supply unit 410,420: thermoelectric element
430: charging unit 440: driving unit

Claims (2)

An external body mounted on the outside of the door, provided with a key input unit, and provided with an outdoor handle;
An inner body mounted on the inside of the door and provided with an interior handle;
A dead bolt and a latch bolt installed inside the door and inserted into a hole in the door frame, and drawn out from the hole and inserted into the door by rotating the outdoor handle upon unlocking through the key input unit; And
A power supply unit supplying power to the key input unit and a driving unit driving the dead bolt;
Including,
The power supply unit,
A thermoelectric element having one side disposed to contact the inner body and the other side disposed to contact the outer body to generate an electromotive force due to a temperature difference between the inside and the outside of the door; And
A charging unit for storing and charging the electromotive force generated by the thermoelectric element;
Including,
The thermoelectric element is
One side surface disposed to be in contact with the inner body is a first aluminum substrate,
The other side that is arranged to be in contact with the outer body is a second aluminum substrate,
The first aluminum substrate and the second aluminum substrate are each connected to a P-type thermoelectric element and an N-type thermoelectric element,
The first and second aluminum substrates and the P-type thermoelectric element and the N-type thermoelectric element are connected with copper,
Lead wires are connected to the P-type thermoelectric element and the N-type thermoelectric element, respectively,
The first aluminum substrate and the second aluminum substrate are flexible substrates,
An antibacterial film is attached to the key input part of the external body,
The antibacterial film includes at least one of copper particles and silver nanoparticles,
The external body is provided with an emergency power supply to open the door by contacting the battery from the outdoor side in case of an emergency,
Digital door lock with self-power system. delete

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