KR20040059218A - Digital door lock - Google Patents

Abstract

PURPOSE: A digital door lock is provided to sense accurately an opening state and a shutting state of a door and simplify a total structure by using a magnet installed at a door frame. CONSTITUTION: A controller(16) is installed on a base(12). A motor(18) is installed on the base. The motor includes a driving gear(20) and is connected to the controller. A drive gear(22) is coupled to the driving gear. A driven shaft(26) is installed vertically to the base. A top gear(24) and the driven gear are formed with one body. A sector gear(38) is coupled to the top gear. A bar(40) is formed at a rear end of the sector gear. A first and a second sensor(42,44) are arranged at an end of the bar. The first and the second sensors are connected to the controller. An idle gear(32) is coupled to the top gear. An idle shaft(34) is installed vertically to the base. A key(36) is coupled to the idle shaft. A locking device is coupled to a front end of the key.

Description

Digital door lock

The present invention relates to a digital door lock, and in particular, it is possible to quickly check the open and closed state of the door to improve the operability and to realize the simplification of the structure, and also to intermittent the power provided from the motor The present invention relates to a digital door lock which improves safety by preventing the locking device from being unilaterally opened by another person.

In general, door locks are classified into mechanical and electronic door locks, and these door locks are merely separate devices, and merely perform functions related to opening and closing of a door.

The mechanical door lock is a combination of a plurality of components that can be locked and unlocked manually by using a lever or a key, such as inside and outside, and relatively inexpensive, but the structure is complex and has the disadvantage of easy to open the key. .

In addition, the electronic door lock opens and closes the door by the operation of an electronic solenoid without the need for a separate key or lock lock. A plurality of input buttons are provided on the outside of the door, and the input button has a password having a predetermined number of digits. It is possible to input.

The electronic door lock is a recent technical trend to add a variety of security functions to further improve the security, the electronic door lock of the electronic door lock has to be supplemented and installed every time the security function is added. Function can be exercised.

On the other hand, the prior art is described in Figure 16 Utility Model Registration No. 20-289539 (name: digital door lock) registered and filed by the same person in advance.

First, while forming the digital door lock inside the inner body 100 to be installed in the door not shown, the ratchet bolt 130 to be hit by the striker to reverse the spring 132 is coupled to the rear and installed to the front and back, On the rear end of the ratchet bolt 130, a door closing detecting unit 150 for detecting a forward and backward state is installed.

In addition, a control unit (not shown) is connected to the door closing detecting unit (150), and the control unit is connected to a motor (121) that provides power while operating by a command transmitted, and the motor (121) is a bevel gear ( 122 is installed inside the inner body 100 while engaging the shaft.

Subsequently, the bevel gear 122 has a driven bevel gear 123a formed on one side of the outer circumference of the spindle 123c, and an operation protrusion 123b for transmitting an action force to the other outer circumference of the spindle 123c is installed in a bar shape. do.

The dead bolt 110 is coupled to the front end of the manipulation protrusion 123b so as to be able to move forward and backward from one side of the inner body 100. The operation groove 112 is formed to guide the flow as much as possible.

Referring to the operation of the conventional technology configured as described above is as follows.

First, when the door is closed, the digital door lock moves together, and the ratchet bolt 130 is hit by the striker installed in the door frame, thereby compressing the spring 132, and the door closing detecting means 150 is ratchet bolt 130. When the reverse state is detected and transmitted to the control unit, the control unit transmits an operation command to the motor 121.

Accordingly, the motor 121 rotates the spindle 123c by transmitting power to the driven bevel gear 123a which is geared through the bevel gear 122 while the motor 121 rotates, and subsequently the spindle 123c rotates. The adjustment protrusion 123b is moved from one side to the other side inside the operation groove 112.

As described above, when the operation protrusion 123b moves inside the operation groove 112, the dead bolt 110 moves forward into the groove formed in the door frame to be locked.

At the same time, the ratchet bolts 130 that are retracted are pushed forward by the elastic force of the repulsing spring 132 and flow into the groove formed in the door frame.

Therefore, the dead bolt 110 and the ratchet bolt 130 is introduced into the groove formed in the door frame, the door is closed and locked.

In contrast to the above, if a password is input to a menu panel not shown to open the door, the control unit transmits a command to the motor 121 to operate in the reverse direction while driving the bevel gear 122 and the driven bevel gear 123a. , The spindle 123c, and the operation protrusion 123b in order.

Therefore, the operation protrusion 123b is returned to its original position while the dead bolt 110 is reversed so that the tip portion is separated from the groove formed in the door frame.

When the door is opened in the above state, the ratchet bolt 130 hits the striker and moves backward, and at the same time, the door is released from the door frame.

According to the related art, when the ratchet bolt is retracted, the control unit receives the information through the door closing detecting means and advances the dead bolt to lock the door, resulting in a complicated structure and a high failure rate during long-term use. .

Another drawback is that there is a lack of stability because no separate device is installed to control the operation of the door lock.

An object of the present invention is to realize the simplification of the structure while improving the operability by enabling to check the open and closed state of the door quickly.

Another object is to improve the safety by preventing the locking device from being unilaterally opened by others by allowing the power supplied from the motor to be interrupted.

1 is an embodiment of the present invention installed on the door.

2 is a perspective view of an indoor door lock in which an embodiment of the present invention is installed.

3 is a plan view of the interior door lock showing an embodiment of the present invention.

Figure 4 is a side view of the indoor door lock and the locking device coupled state showing an embodiment of the present invention.

Figure 5 is an exploded perspective view of the interior door lock showing an embodiment of the present invention.

Figure 6 is a state in which the locking device is an embodiment of the present invention installed on the door.

7 is a perspective view of the inside of the locking device which is an embodiment of the present invention.

8 is a plan view of a locking device which is an embodiment of the present invention.

9 is a cross-sectional view taken along the line AA of FIG. 8.

10 is a perspective view of an outdoor door lock in combination with the present invention.

11 is a block diagram illustrating an embodiment of the invention.

12 is a flow chart of the operation command of the control unit showing an embodiment of the present invention.

Figure 13a, b, c, d, e is a functional diagram showing a process of transmitting power to the dead bolt of the locking device of the present invention.

Figure 14a, b, c is a view showing a process of transmitting power to the ratchet of the locking device of the present invention.

Figure 15a, b is a functional diagram showing a process of transmitting power to the pressing member which is an embodiment of the present invention.

Figure 16 is a detailed internal view showing a conventional embodiment.

Explanation of symbols for the main parts of the drawings>

2: door 4: locking device 6: indoor door lock

8: Outdoor door lock 10: Case 12: Base

14: battery 16: control unit 18: motor

20: primary gear 22: driven gear 24: top gear

26: driven shaft 28: stopper 30: auxiliary handle

32: Children gear 34: Children axis 36: Tall

38: sector gear 40: bar 42: sensor a

44: sensor b 46: pressure member 48: guide plate

50, 70, 106, 128: Slot 52: Pressure 54, 68: Fixing screw

56, 114: Lever 58: Center screw 60: Moving member

62: Plate 64: Guide ball 66: Pin

72: rocker 74: rotary shaft 76: flange

78: stopper 80,124: spring 82: boss

84,122: bar 86,88: handle 90,92: cover

94: open switch 96: close switch 98: case

100, 102: Guide ball 104: Dead bolt 108, 120: Fixing pin

110: groove a 112: groove b 116: ratchet

118: mass 126: support 130: finger

132: door sensor 134: door frame 136: pocket

138: magnet 140: password input unit 142: outdoor control unit

The present invention includes a control unit 16 installed on the base 12, the motor 18 is provided on the base 12 having a motive gear 20 connected to the control unit 16 and the A driven shaft 26 vertically installed on the base 12 and forming an upper gear 24 integrally formed with the driven gear 22 geared to the motive gear 20, and the upper gear 24. Sector gear 38 having a bar 40 at the rear and geared to the rear and rotatably installed on the motor 18, and is connected to the control unit 16 while being in contact with the end of the bar (40) Sensor shafts a, b (42, 44), idle gears (32) that are geared to the upper gear (24) and are vertically mounted on the base (12), and the idle shaft (34) A key 36 coupled to 34 and a locking device 4 coupled to the tip of the key 36 are provided.

Referring to the present invention in more detail, first, as shown in FIG. 1, the door 2 is provided with a locking device 4 for controlling the opening and closing, and the indoor door lock 6 on both sides of the locking device 4. And outdoor side door locks 8 are provided, respectively.

The indoor side door lock 6 installed as described above has a case 10 as shown in FIG. 2, and the base 12 shown in FIGS. 3 to 5 inside the case 10 (see FIG. 5). ) Is installed.

The control unit 16 is installed on the base 12 to connect the battery 14, and the motor 18 installed on the base 12 is provided with the motive gear 20 on the control unit 16. Connected.

In addition, a driven shaft 26 is formed vertically rotatably on the base 12 to form a driven gear 22 that rotates and is coupled to the prime gear 20 and an upper gear 24 that transmits power. And a stopper 28 defining a rotation range below the driven shaft 26, and manually locking the locking device 4 (see FIG. 1) at the lower end of the driven shaft 26. One auxiliary handle 30 to be coupled.

The auxiliary handle 30 is installed outside the case 10 constituting the indoor door lock 6.

On one side of the driven shaft 26 (see FIG. 5) installed as described above, the idle shaft 34 having the upper gear 24 and the idle gear 32 coupled to the gears on the base 12 is rotatable on the base 12. It is installed vertically, the end portion is coupled to the locking device 4 (see Fig. 1) while the key 36 for transmitting the acting force is installed in the axial direction on the idle shaft 34.

In addition, while the sector gear 38 is rotatably installed on the motor 18 (see FIG. 5), the sector gear 38 is rotatably coupled to the upper gear 24, and the rear end of the sector gear 38 indicates the rotation range. 40 is installed, and the bar 40 is connected to the ends of the control unit 16 arranged at regular intervals of the sensors a, b (42, 44) to check the movement range.

Subsequently, a pressure member 46 is installed at one side of the driven shaft 26 to stop the rotation while pressing one side of the stopper 28. The pressure member 46 has a guide plate 48 bent in multiple stages. It is configured while forming a slot 50 in the portion, the pressure plate 52 for pressing one side of the stopper 28 is installed in the guide plate 48 while moving forward and backward.

In addition, the fixing screw 54 is coupled to the pressure 52 while being protruded through the slot 50. The fixing screw 54 has a lever 56 for transmitting an acting force to the motor 18 while engaging the tip. ) Located on one side.

In the middle of the lever 56, the center screw 58, which forms the center of rotation, is installed on the base 12, and a moving member 60 is provided at the rear of the lever 56 to provide an action force. The moving member 60 has a plate 62 which moves to the left and right while engaging the rear end of the lever 56 to form guide holes 64 on both sides, and a pin 66 on the rear surface of the plate 62. ) Is installed vertically.

In addition, the guide hole 64 is installed vertically on the base 12 while the fixing screw 68 that is to support the local area, and the slot 70 for guiding the pin 66 while guiding the base 12 In this case, the end of the pin 66 is coupled to the locker 72 installed in the case 10 (see FIG. 2).

On the other hand, the base 12 (see Fig. 5) is installed while the rotating shaft 74 is formed to form a flange 76 at the lower portion, the stopper 78 is installed on the outer circumference of the flange 76, the locking role is provided, The rotation shaft 74 is provided with a spring 80 to provide a restoring force.

A plurality of bosses 82 are vertically installed at a position spaced apart from the flange 76 while being distributed at the same angle on the base 12, and a finger of the spring 80 is disposed on both sides of the bosses 82. Each of the pieces is positioned so that the rotary shaft 74 may rotate in a predetermined direction and then return to its original position by the elastic force of the spring 80.

A bar 84 for transmitting an action force is coupled to the rotary shaft 74 while penetrating through the axial direction. At this time, a handle 86 installed outside the case 10 (see FIG. 1) is coupled to the rear end of the bar 84. To the bar 84 (see FIG. 5), the locking device 4 (see FIG. 1), the outdoor door lock 8, and the handle 88 are sequentially coupled.

Cover 90 is provided on the driven shaft 26 (see Fig. 5) and the upper end of the idle shaft 34 is installed as described above, and the boss (82) located outside the rotary shaft (74) (spring) Covers 92 for preventing the separation of the 80 are provided, respectively.

In addition, the control unit 16 is connected to the open switch 94 (see FIG. 2) and the close switch 96, which enable the locking device 4 (see FIG. 1) to be operated indoors. The switch 94 and the close switch 96 are respectively fixed to the front side of the interior door lock 6 case 10.

Meanwhile, referring to the locking device 4 (see FIG. 8) in FIGS. 6 to 9, first, a case 98 made of a hollow rectangular parallelepiped is formed, and the guide holes 100 and 102 penetrated through the case 98. Two are formed at the upper and lower portions, respectively, and the guide hole 100 positioned at the upper portion is installed while the dead bolt 104 for controlling the locking state of the door 2 (see FIG. 1) is coupled to slip the front part.

A slot 106 is formed in the middle portion of the dead bolt 104 by a predetermined length, and the fixing pin 108 that acts as a locking mechanism is slip-coupled in the slot 106 and the sidewall surface of the inside of the case 98 is formed. It is installed fixed vertically.

And the rear end of the dead bolt 104 is formed while the grooves a, b (110, 112) are disposed to face each other, the lower portion of the dead bolt 104, while engaging the leading end to any one of the grooves a, b (110, 112) The lever 114 for transmitting the lever 114 is installed, wherein the rear end of the lever 114 is installed to be rotated in the case 98 together with the tip of the key 36 coupled thereto.

In addition, the guide hole 102 located under the case 98 is provided with a ratchet 116 for controlling the locked state of the door 2 (see FIG. 1), and a mass 118 is provided at the rear of the ratchet 116. It is installed while coupling the fixing pin 120 to the side, the bar 126 is formed integrally to the rear of the mass 118 is formed.

The bar 122 is coupled to a spring 124 providing an elastic force so that the retracted ratchet 116 can be returned to its original position, the rear end of the bar 122 is a support 126 formed in the case 98 In which the spring 124 is located between the mass 118 and the support 126.

In addition, a slot 128 penetrates the side wall of the case 98, and a fixing pin 120 is slip-coupled in the slot 128.

Along with the fixing pin 120, the finger 130 for reversing the mass 118 is installed inside the case 98 while the front part is disposed, and the handle 86 (FIG. 5) is located at the rear of the finger 130. Bar 84 coupled to the through) is coupled through.

Accordingly, the finger 130 (see FIG. 8) is installed in the case 98 so as to pull the fixing pin 120 while rotating together around the rotating bar 84.

On the other hand, the door sensor 132 (see Fig. 8) for checking the open and closed state of the door 2 (see Fig. 1) is located in front of the case 98 between the dead bolt 104 and the ratchet 116. Is installed, the door sensor 132 is connected to the control unit 16 (see Fig. 5) for transmitting a command while receiving information.

In addition, a pocket 136 is installed on the inner surface of the door frame 134 that includes the door 2 to allow the dead bolt 104 and the ratchet 116 to be kept locked, and the pocket 136 is in the middle of the pocket 136. The magnet 138, which allows the position of the door 2 to be grasped, is installed on a line coinciding with the door sensor 132 (see Fig. 8).

Meanwhile, the outdoor side door lock (see FIG. 10) is provided with a password input unit 140 for inputting a password on the front side as shown in FIG. 10, and the password input unit 140 is shown in FIG. 11. The outdoor side control unit 142 and the motor 18 are sequentially connected.

Referring to the operation of the present invention configured as described above are as follows.

First, when the open switch 94 installed in the indoor side door lock 6 (see FIG. 2) is turned on, the control unit 16 (see FIG. 5) transmits an operation command to the motor 18 to provide power. As a result, the power is transmitted in the order of the prime gear 20, the driven gear 22, and the idle gear 32 as shown in FIG. 13A.

As described above, when a part of the power reaches the driven gear 22, the driven shaft 26 rotates together with the upper gear 24, so that the sector gear 38 (see Fig. 13C) as shown in Figs. At the same time, the bar 40 installed at the rear end of the sector gear 38 moves away from the sensor b 44 and moves in one direction to reach the sensor a 42.

Accordingly, the sensor a 42 transmits a signal indicating that the bar 40 has reached the control unit 16, and the control unit 16 commands the motor 18 to stop operating based on the transmitted information. In this case, the driven shaft 26 is rotated by a predetermined rotation speed and then stopped.

At this time, the idle shaft 34 is rotated by the rotational speed proportional to the driven shaft 26 together with the key 36.

Subsequently, when the key 36 is rotated as described above, the lever 114 (see FIG. 13E) is rotated as shown in FIGS. 13D and E to move the tip portion from the groove b 112 to the groove a 110. By doing so, the dead bolt 104 is reversed, which causes the dead bolt 104 to move while maintaining a balance under the guidance of the fixing pin 108, and at the same time the tip of the dead bolt 104 Is introduced into the guide hole 100 is in line with the front of the case 98.

After the dead bolt 104 is locked as described above, as shown in FIGS. 14A and 14B, when the handle 86 (see FIG. 14B) located on the indoor side is rotated in one direction, the rotation shaft ( 74 rotates together while resisting the elastic force of the spring 80 and at the same time by rotating the bar 84 coupled to the handle 86 in the same direction, as shown in FIG. To rotate.

At this time, if the fixing pin 120 located in front of the finger 130 is pushed together with the mass 118, the rear end of the mass 118 compresses the spring 124, and at the same time in front of the mass 118 The installed ratchet 116 is retracted together and flows into the guide hole 102 and is positioned on a line coinciding with the front surface of the case 98, which causes the ratchet 116 to be released from the locked state.

In this state, the user opens the door 2 (see Fig. 6) as shown in the flowchart shown in Fig. 12 (S1).

When the door 2 is opened and released from the door frame 134, the door sensor 132 (see FIG. 8) installed in the case 98 is mounted in the pocket 136 installed in the door frame 134 (FIG. 6). The door sensor 132 transmits information to the control unit 16 (see FIG. 5) that the door sensor 132 is not in contact with the magnet 138.

After S1, the control unit 16 (see FIG. 5) determines whether the door 2 (see FIG. 6) is opened (S2).

If the door 2 has not been opened since S2, the control unit 16 (see Fig. 5) maintains a command transmission standby state (S3).

In addition, if the door 2 (see Fig. 6) is opened after S2, the motor 18 (see Fig. 5) is kept in the stopped state. (S4)

Therefore, the dead bolt 104 (see Fig. 8) is kept inside the guide hole 100 as the first time to maintain the unlocked state.

When the user removes the external force applied to the handle 86 (see FIG. 5) in the above state, the spring 80 coupled to the rotation shaft 74 rebounds and returns the handle 86 to its original position. The spring 124 coupled to the bar 122 (see FIG. 8) rebounds to advance the mass 118 such that the ratchet 116 protrudes toward the front of the case 98.

On the other hand, unlike the above, the user closes after using the opened door 2 (see Fig. 6).

As described above, when the door 2 is closed and positioned on the door frame 134, the door sensor 132 installed in the case 98 (see FIG. 8) is provided with a magnet 138 installed in the pocket 136 (FIG. 6). In this case, the door sensor 132 (see FIG. 5) transmits information to the control unit 16.

After S5, the control unit 16 determines whether the door 2 (see Fig. 6) is closed. (S6)

As described above, the control unit 16 (see FIG. 5) is based on information transmitted from the door sensor 132 (see FIG. 5) corresponding to the magnet 138 (see FIG. 6). It is determined whether or not to close).

If it is determined that the door 2 has not been closed since the step S6, the control unit 16 (see Fig. 5) maintains the command transmission standby state (S7).

When the door 2 (see FIG. 6) is closed as described above, the ratchet 116 (see FIG. 8) is pushed while hitting the door frame 134 and flows into the guide hole 102 to open the mass 118. In this case, the mass 118 is retracted while compressing the spring 124, and at the same time the fixing pin 120 is spaced apart from the front of the finger 130.

Subsequently, when the door 2 (see Fig. 6) closes and reaches a line coinciding with the door frame 134, the ratchet 116 (see Fig. 8) is mass 118 by the spring 124 which repels. 6) and the inside of the pocket 136 (see FIG. 6) while advancing together, and the fixing pin 120 (see FIG. 8) is in contact with the front of the finger 130.

Thus, the door 2 (see Fig. 6) is in a state of being primarily locked by the ratchet 116 (see Fig. 8).

If it is determined that the door 2 (see Fig. 6) is closed after the step S6, the operation command is transmitted to the motor 18 (see Fig. 5).

When the operation command is transmitted to the motor 18 as described above, unlike the above, the motive gear 20 is rotated in the reverse direction to transmit power to the driven gear 22, the upper gear 24, the sector gear 38 and the idle. The gears 32 are simultaneously transmitted to each other.

Accordingly, the key 36 rotating together with the idle gear 32 rotates the lever 114 (see FIG. 8) and moves the dead bolt 104 forward while being positioned in the groove b 112. The dead bolt 104 is located inside the pocket 136 (see FIG. 6) while being exposed to the front of the case 98, thereby keeping the dead bolt 104 locked.

At this time, the slot 106 (see FIG. 8) is moved while being guided by the fixing pin 108, allowing the dead bolt 104 to move forward while maintaining balance.

At the same time, by the power transmitted by the sector gear 38 which is geared to the upper gear 24 (see FIG. 5), the tip of the bar 40 is rotated in the opposite direction as described above. In the sensor b (44).

Therefore, the sensor b 44 transmits information to the control unit 16 that the end of the bar 40 has been reached.

After the step S8, the control unit 16 determines whether the bar 40 has reached the sensor b44. (S9)

If it is determined that the end of the bar 40 has reached the sensor b 44 since S9, an operation stop command is transmitted to the motor 18 (S10).

As described above, when there is no power transmitted when the motor 18 is stopped, the bar 40 of the sector gear 38 remains in the sensor b 44, and the lever coupled to the key 36. 114 (see FIG. 8) no longer advances the dead bolt 104.

Therefore, the dead bolt 104 is kept locked.

If it is determined that the end of the bar 40 has not reached the sensor b 44 (see FIG. 5) since S9, the motor 18 can be continuously operated.

Unlike the method of operating by transmitting a command from the indoor side door lock 6 (see FIG. 1) as described above, the user inputs a password to the password input unit 140 installed in the outdoor side door lock 8 (see FIG. 10). Then, the outdoor control unit 142 (see FIG. 11) determines whether the stored password and the input password match each other, and if it is determined that the password matches each other, transmits an operation command to the motor 18 (see FIG. 5). Through the same process as described above, the dead bolt 104 (see Fig. 8) is reversed so that the locked state of the locking device 4 is released.

On the other hand, in order not to be released in the locked state of the locking device 4, the locker 72 installed in the indoor door lock 6 (see Fig. 2) is moved in one direction.

As described above, when the locker 72 moves, the pin 66 (see FIG. 15B) moves to one side in the slot 70 (see FIG. 5) as shown in FIGS. 15A and 15B. 66, the plate 62 (see Fig. 15b) is moved together, the plate 62 is guided by the guide hole 64 by the fixing screw 68 can be moved in a balanced manner.

When the lever 56 is rotated about the center screw 58 by the plate 62 moving continuously, the pressure 52 coupled to the tip of the lever 56 moves forward and closely adheres to one side of the stopper 28. At the same time, the fixing screw 54 is moved in the slot (50).

In this state, the motor 18 (see FIG. 5) receives the operation command from the control unit 16 and transmits power to the driven gear 22 through the motive gear 20 to transfer the driven shaft 26. In order to rotate, the driven shaft 26 is prevented from rotating because the stopper 28 installed below the driven shaft 26 is pressed while being pressed by the pressure 52.

Therefore, since the power supplied from the motor 18 is not transmitted to the locking device 4 (see Fig. 1), the locking device 4 is kept in the locked state continuously.

The present invention has the advantage that the door sensor through the magnet installed in the door frame to quickly check the opening and closing state of the door has excellent operability, and can also simplify the structure.

Another effect is to install a pressurizing member on one side of the driven shaft to interrupt the power provided from the motor, thereby preventing the locking device from being unilaterally opened by another person, thereby improving safety.

Claims (10)

A control unit 16 mounted on the base 12, A motor 18 connected to the control unit 16 and having a motive gear 20 installed on the base 12; A driven shaft 26 vertically installed on the base 12, respectively, forming an upper gear 24 integral with the driven gear 22 geared to the motive gear 20; A sector gear 38 having a bar 40 at the rear and being rotatably installed on the motor 18 while being geared to the upper gear 24; Sensors a, b (42, 44) are arranged to be in contact with the end of the bar (40) and connected to the control unit 16, An idle shaft 34 installed vertically on the base 12 while forming an idle gear 32 that is gear-coupled to the upper gear 24; A key 36 coupled to the idle shaft 34; A digital door lock comprising a locking device (4) coupled to the tip of the key (36). The method of claim 1, A stopper 28 is installed below the driven shaft 26, and a pressing member 46 is installed at a lower side of the driven shaft 26, and a lever 56 is coupled to the pressing member 46 to the pressing member 46. It is installed on the base 12, the center screw 58, which forms the center of rotation is coupled to the middle portion of the lever 56 is fastened to the base 12, the moving member 60 at the rear of the lever 56 Digital door lock, characterized in that the installation. The method of claim 2, The pressing member 46 is A guide plate 48 formed by bending in multiple stages while forming the slot 50 in the center portion, The pressure 52 is installed to be able to move forward and backward inside the guide plate 48, A digital door lock made of a set screw 54 which is installed in the slot 50 while being coupled to the pressure 52 and the lever 56, respectively. The method of claim 2, The moving member 60 is Plates 62 are coupled to the rear end of the lever 56 and formed with guide holes 64 on both sides, A pin 66 vertically installed on the back of the plate 62; Slot 70 is formed in the base 12 to couple the pin 66 to the inside, A digital door lock made of a set screw (68) installed on the base (12) while being slidably coupled in the guide hole (64). The method of claim 1, A door sensor 132 is installed on the locking device 4, a control unit 16 is connected to the door sensor 132, and a magnet 138 facing the door sensor 132 is provided with a door frame 134. Digital door lock, characterized in that installed in. The method of claim 5, wherein When the control unit 16 receives a signal from the door sensor 132 that is in contact with the magnet 138, the control unit 16 transmits an operation command to the motor 18 to transfer power to the idle shaft 20 through the motive gear 20. 34), wherein the idle shaft (34) and the key (36) rotate together to lock the locking device (4). The method of claim 5, wherein The control unit 16 is a digital door lock, characterized in that to keep the motor (18) stopped when the signal from the door sensor 132 to be spaced apart from the magnet (138). The method according to any one of claims 1 to 7, The locking device 4 is A case 98 formed in a hollow shape and having a guide hole 100 penetrated through the front surface thereof; The dead bolt 104 and the grooves a, b (110, 112) formed to face each other while the front end portion is coupled to the guide hole 100, A digital door lock comprising a lever (114) for coupling a key (36) coupled to a case (98) to a rear end while the front end is positioned at one of the grooves (a, b (110, 112)). The method of claim 8, The slot 106 is formed in the middle of the dead bolt 104, the fixing pin 108 is slip-coupled in the slot 106, and is installed perpendicular to the side wall of the case 98 Door lock. The method according to claim 8 or 9, The guide hole 102 penetrates the front surface of the case 98, and the ratchet 116 is coupled to the guide hole 102 so as to move forward and backward, and the mass 118 is formed at the rear of the ratchet 116. Is coupled to each having a fixing pin 120 and the bar 122, the bar 122 is coupled to the support 126 formed in the case 98 while engaging the spring 124, the fixing pin 120 Digital door lock, characterized in that the finger 130 is installed in the case (98) while positioning the front portion, the bar (84) is installed on the rear end of the finger (130).