KR20080065515A - Door lock device - Google Patents

Abstract

A door lock device is provided to steer a handle when a door is locked or unlocked by rotating the handle independently without an interlock with a motor. A door lock device includes a housing, a dead bolt(320), a first rotating member(350), and a second rotating member(360). A door is installed on the housing. The dead bolt is installed on the housing to lock and unlock the door. The first rotating member is coupled to the housing to rotate around the housing. The first rotating member is connected to the dead bolt so that the dead bolt is slid along a direction to indent the dead bolt into the housing together with the rotation. The second rotating member is coupled to the housing to rotate around the housing. The second rotating member is relatively rotated around the first rotating member and is connected to the dead bolt so that the dead bolt is slid along a direction to protrude toward the housing.

Description

Door lock device

1 is a schematic exploded perspective view of a door lock device according to an embodiment of the present invention.

FIG. 2 is a schematic exploded perspective view of the mortise portion shown in FIG. 1.

3 is a partial cross-sectional view schematically showing the internal structure of the mortise portion shown in FIG.

4 is a partial cross-sectional view schematically illustrating a state in which the door is unlocked by the first rotating member in the mortise portion illustrated in FIG. 3.

FIG. 5 is a partial cross-sectional view schematically illustrating a state in which a door is locked by a second rotating member in the mortise portion illustrated in FIG. 3.

6A and 6B are schematic cross-sectional views taken along the line VI-VI of FIG. 3 to illustrate the unlocking process of the door by the first rotating member.

<Description of the symbols for the main parts of the drawings>

1 ... door lock device 2 ... door

3 ...

110.Interior housing 120 ... Handle

130 ... Handle pin 200 ... Outside

210 ... outer housing 220 ... handle

230 ... spinning pin 300 ... motes

310 ... housing 320 ... dead bolt

330 ... Parameter 331 ... Hinge section

332 ... plate section 333 ... pressurized projection

334.Inclined part 335 ... Tapered part

340.Main rotation member 342 ... First pressure part

343.2nd pressure part 350 ... 1st rotating member

355 ... first pressure unit 360 ... second rotating member

365.2nd pressure part 370 ... torsion spring

380 ... rotating body

The present invention relates to a door lock device, and more particularly to a door lock device for locking and unlocking the door.

In general, the door lock device is widely used in general home houses or public buildings. Typically, door locks are used for entrance doors, bank vaults, and access controls to restrict access to specific areas.

Such a door lock device generally includes a housing installed in the door, a latch bolt protruding and immersed with respect to the housing, and a dead bolt for locking and unlocking the door as it protrudes and immerses with respect to the housing. The dead bolt is driven by the rotation of the motor to lock and unlock the door. In addition, a button for operating the motor, a knob for locking the door, and a rotatable handle are coupled to the indoor side of the door.

The user presses a button to operate the motor to open and exit the door from the indoor side, and then opens and exits the door by rotating the handle. That is, the user turns the handle or the handle after the first operation for moving the dead bolt to open the door, for example, pressing a button.

In addition, the user locks the door by moving the dead bolt linked to the motor by rotating the knob to lock the door in the indoor side.

By the way, in the door lock device configured as described above, in the case of an emergency, for example, in the event of a fire or an earthquake, the person in the room is mentally panic, so that the above-described primary operation, that is, the button Pressing does not unlock the door, but only turns the secondary, i.e., turns the handle. Therefore, there is a problem in that the locking of the door is not released and a person on the indoor side is trapped, causing personal injury.

In addition, since the rotational force of the knob is transmitted to the dead bolt through the gear and the motor, the door lock device needs to rotate the gear and the motor together with the knob to lock the door. Therefore, it takes a lot of force to lock the door, there is a problem that the motor is damaged.

The present invention has been made to solve the above problems, an object of the present invention is to provide a structure that can easily unlock the door from the indoor side in the event of an emergency, as well as easy to lock the door from the indoor side. It is to provide an improved door lock device.

In order to achieve the above object, the door lock device according to the present invention is installed in the door and the dead bolt is installed in the housing so as to be linearly movable in a direction protruding and immersed with respect to the housing dead bolt for locking and unlocking the door And a first rotating member coupled to the housing so as to be rotatable with respect to the housing and connected to the dead bolt so as to linearly move in a direction in which the dead bolt is immersed with respect to the housing. A second rotation coupled to the housing so as to be rotatable, the second rotation being relatively rotatable with respect to the first rotation member, and connected to the dead bolt so that the dead bolt moves linearly in a direction protruding from the housing in association with the rotation; It is characterized by including a member.

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

1 is a schematic exploded perspective view of a door lock device according to an embodiment of the present invention, Figure 2 is a schematic exploded perspective view of the mortise portion shown in Figure 1, Figure 3 schematically shows the internal structure of the mortise portion shown in Figure 1 4 is a partial cross-sectional view schematically illustrating a state in which the door is unlocked by the first rotating member in the mortise portion illustrated in FIG. 3, and FIG. 5 is the mortise portion illustrated in FIG. 3. Is a partial cross-sectional view schematically showing a state in which the door is locked by the second rotating member, Figure 6a and Figure 6b is a schematic cross-sectional view of the VI-VI line of Figure 3 the unlocking process of the door by the first rotating member To illustrate.

1 to 6B, the door lock device 1 according to the present embodiment includes an indoor side part 100, an outdoor side part 200, and a mortise part 300.

The interior side part 100 includes an interior side housing 110 coupled to the interior side of the door 2 and a handle 120 rotatably coupled to the interior side housing. The handle pin 130 is fixed to the handle 120. The handle pin 130 rotates around the rotation center axis C1 of the handle. In addition, the handle 120 is elastically biased to return to its original state by a torsion spring (not shown), and when the handle 120 is rotated and released, the handle 120 returns to its original state.

The outdoor side part 200 has a handle 220 and a keypad 211 rotatably coupled to the outdoor side housing 210 and the outdoor side housing 210. Rotating pin 230 is fixed to the handle 220, the rotating pin 230 is rotated with the handle 220 when the handle 220 is rotated.

The mortise portion 300 is installed inside the door 2. The mortise portion 300 includes a housing 310, a dead bolt 320, an intermediate member 330, a main rotating member 340, a first rotating member 350, and a second rotating member 360. It is provided.

The housing 310 is installed in the door 2 and is inserted into the door 2 so as not to protrude and immerse with respect to the side of the door 2 shown in phantom in FIG. 1. The housing 310 has a case 311, a front plate 312 and a cover 313 which are coupled to each other. A dead bolt through hole 312a is formed in the front plate 312. The case 311 includes a first stopper 311a, a second stopper 311b, and a protrusion pillar 311c, and a gear 316 coupled to the motor 314 and the output shaft 315 of the motor. Is installed.

The dead bolt 320 is installed inside the housing 310 to enable linear movement in the direction in which the dead bolt 320 protrudes and immerses with respect to the housing 310. The dead bolt 320 is inserted into the dead bolt receiving hole (3a) formed in the door holder (3) through the dead bolt through hole (312a) to lock the door (2), in Figure 4 As shown, the lock is released from the door 2 by being separated from the dead bolt receiving hole 3a. The dead bolt 320 is bolted to the fixing member 321. A cylindrical coupling hole 322 is formed in the fixing member 321.

The dead bolt 320 is elastically biased in a direction in which the dead bolt 320 protrudes and immerses with respect to the housing 310 when the door is locked and unlocked, respectively. One end of the torsion spring 323 is fixed to the protruding pillar 311c protruding from the case 311, and the other end of the torsion spring 323 is fixed to the protruding pillar 336 protruding from the intermediate member 330 described later. It is.

The intermediate member 330 is coupled to the dead bolt 320 and moves linearly with respect to the housing 310 together with the dead bolt 320. The intermediate member 330 has a shape corresponding to the coupling hole 322 of the fixing member 321 and is inserted into the coupling hole 322 and a dead bolt (331) from an end of the hinge portion 331. A plate portion 332 is formed to extend in the moving direction of the 320 and a pressurized protrusion portion 333 is formed to extend in the thickness direction of the door 2 from one side of the plate portion 332. In addition, the inclined portion 334 and the tapered portion 335 which are formed to be inclined with respect to the moving direction of the dead bolt 320 are formed on both sides of the pressure projecting portion 333.

And as described above, since the hinge portion 331 of the intermediate member 330 is fitted into the coupling hole 322 of the fixing member 321, the hinge portion 331 is rotated by a predetermined angle in the coupling hole 322. Possible, and therefore, the intermediate member 330 is rotatable between the first position shown in FIG. 6A and the second position shown in FIG. 6B. In the first position and the second position, the plate part 332 is caught by the fixing member 321 so that the intermediate member 330 can no longer rotate. In addition, the intermediate member 330 is elastically biased in the direction approaching the main rotating member described later by the torsion spring 337. One side of the torsion spring 337 is welded and fixed to the fixing member 321, and the other side of the torsion spring 337 is in contact with the plate 332 to press the plate 332 toward the main rotating member.

The main rotation member 340 is rotatably installed in the housing 310. The main rotating member 340 is provided with a groove portion 341, a first pressing portion 342, a second pressing portion 343, and a gear portion 344.

The groove 341 is formed on the outer surface of the main rotating member 340. The pressurized protrusion 333 is inserted into the groove 341.

The first pressing portion 342 and the second pressing portion 343 are formed on both sides of the groove portion 341 and face each other. A pressurized protrusion 333 is disposed between the first pressing part 342 and the second pressing part 343. The first pressing portion 342 and the second pressing portion 343 presses the pressure projecting portion 333 of the intermediate member 330 when the main rotating member 340 rotates, thereby causing the dead bolt 320 to enter the housing 310. Linear movement in the direction of protruding or immersing relative to. That is, when the main rotating member 340 is rotated in one direction, that is, clockwise in the state shown in FIG. 3, the pressurized protrusion 333 of the intermediate member 330 is pressed by the first pressing unit 342 to mediate the member. 330 and the dead bolt 320 is linearly moved to the right, so that the dead bolt 320 is immersed into the housing 310, so that the locking of the door 2 is released. At this time, the first pressing portion 342 directly presses the pressurized protrusion 333 formed in a direction perpendicular to the moving direction of the intermediate member 330. Therefore, a rotational force for rotating the intermediate member 330 by using the hinge part 331 as the rotating shaft does not occur, and as a result, the intermediate member 330 does not rotate. In addition, when the main rotating member 340 is rotated in the opposite direction, that is, counterclockwise, in the state in which the door 2 is locked, the pressurized protrusion 333 of the intermediate member 330 is connected to the second pressing portion 343. The door 2 is locked because the intermediate member 330 and the dead bolt 320 are linearly moved to the left so that the dead bolt 320 protrudes out of the housing 310.

Gear portion 344 is formed on the outer surface of the main rotating member 340 includes a tooth of the abdomen. Here, the plurality of teeth form an arc as a whole. The gear portion 344 meshes directly with the gear 316 coupled to the output shaft 315 of the motor 314. Accordingly, when the motor 314 is driven, the main rotation member 340 rotates clockwise or counterclockwise.

In addition, fitting holes 345 and 346 in which the handle pin 130 and the rotation pin 230 are fitted are formed in the main rotation member 340. The fitting holes 345 and 346 are formed in an arc shape. The inner walls of the fitting holes 345 and 346 do not contact the handle pin 130 and the rotation pin 230 when the handle pin 130 and the rotation pin 230 rotate.

The first rotating member 350 is disposed to face each other in the thickness direction of the main rotating member 340 and the door (2). The first rotating member 350 is coupled to the housing 310 so as to be rotatable with respect to the housing 310. The first rotating member 350 is disposed coaxially with the main rotating member 340 and the handle 120. The first rotating member 350 includes a body portion 351 and the first pressing portion 355.

The body portion 351 is formed in a plate shape. The body portion is provided with a first insertion groove portion 352 and a first insertion protrusion portion 353. The first insertion groove 352 is formed in an arc shape. The first insertion protrusion 353 is formed to protrude in the thickness direction of the door 2 from both sides of the body portion 351. In the body portion 351, a coupling hole 354 through which a rotating body to be described later is fitted is formed.

The first pressing portion 355 is formed extending from the side of the body portion 351 in the direction perpendicular to the thickness direction of the door (2). The first pressing portion 355 is disposed to face the inclined portion 334 of the intermediate member 330. The first pressing unit 355 rotates the intermediate member 330 to the second position by pressing the inclined portion 334 of the intermediate member 330 when the first rotating member 350 rotates in one direction, that is, in the clockwise direction. Let's do it. And when the first rotating member 350 continues to rotate in the state in which the intermediate member 330 is rotated, the first pressing unit 355 presses the pressurized protrusion 333 to force the intermediate member 330 to the dead bolt 320. Linearly move in the immersion direction of. Since the first pressing part 355 is in contact with the first stopper 311a, the first rotating part 350 is restricted from rotating in the counterclockwise direction.

The second rotating member 360 is disposed to face each other in the thickness direction of the main rotating member 340 and the door (2). The second rotating member 360 is installed inside the housing 310 to be rotatable with respect to the housing 310. The second rotating member 360 includes a body portion 361 and the second pressing portion 365.

The body portion 361 is formed in a plate shape. In the body portion 361, a second insertion groove portion 362 and a second insertion protrusion portion 363 are formed. The second insertion groove 362 is formed in an arc shape. The second insertion protrusion 363 is formed to protrude in the thickness direction of the door 2 from both sides of the body portion 361. In the body portion 361, a coupling hole 364 through which a rotating body to be described later is fitted is formed.

The second pressing part 365 is formed to extend in a direction perpendicular to the thickness direction of the door 2 from one side of the body portion 651. The second pressing part 365 is disposed to face the tapered part 335 of the intermediate member 330. The second pressing part 365 presses the taper part 335 of the intermediate member 330 when rotating in the opposite direction to the one direction of the second rotating member 360, that is, the counterclockwise direction, to remove the intermediate member 330. Rotate to 2 position. And when the second rotating member 360 continues to rotate in the state in which the intermediate member 330 is rotated, the second pressing unit 365 presses the pressurized protrusion 333 to dead bolt 320 to the intermediate member 330. Move linearly in the protruding direction. In addition, since the second pressing part 365 is in contact with the second stopper 311b, the rotation of the second rotating part 360 in the clockwise direction is limited.

The second rotating member 360 is disposed to be relatively rotatable with respect to the first rotating member 350. The first insertion protrusion 353 is inserted into the second insertion groove 362, and the second insertion groove 362 includes the rotation path of the first insertion protrusion 353, so that the first insertion protrusion 353 is formed. The first insertion protrusion 353 is not caught by the second insertion groove 362 during rotation. The second insertion protrusion 363 is inserted into the first insertion groove 352. Since the first insertion groove 352 is formed to include the rotation path of the second insertion protrusion 363, the second insertion protrusion 363 During rotation, the second insertion protrusion 363 is not caught by the first insertion groove 352. The body part 361 is in contact with the body part 351, and the first pressing part 355 and the second pressing part 365 are disposed on the same plane. The first rotating member 350 and the second rotating member 360 are coaxially disposed with each other.

In addition, a handle pin 130 is disposed between the first insertion protrusion 353 and the second insertion protrusion 363. Therefore, when the handle 120 rotates in the clockwise direction, the handle pin 130 rotates in the clockwise direction to press the first insertion protrusion 353 so that the first rotation member 350 rotates in the clockwise direction, and the handle 120 In the counterclockwise rotation, the handle pin 130 rotates counterclockwise to press the second insertion protrusion 363 so that the second rotation member 360 rotates counterclockwise.

In addition, an elastic member for elastically biasing the first rotating member 350 and the second rotating member 360 in a direction in which the first rotating member 350 and the second rotating member 360 are spaced apart from each other is coupled. In particular, in this embodiment, the torsion spring 370 is coupled. The torsion spring 370 is fitted to the rotating body 380 to be described later, one end of which is supported by the first insertion protrusion 353, and the other end of which is supported by the second insertion protrusion 363. Therefore, the first rotation member 350 is elastically biased counterclockwise by the torsion spring 370, and the second rotation member 360 is elastically biased clockwise.

The rotating body 380 is rotatably installed with respect to the housing 310. That is, both ends of the rotating body 380 are fitted to the case 311 and the cover 313. The main rotating member 340, the first rotating member 350 and the second rotating member 360 are fitted to the rotating member 380, respectively.

In the door lock device 1 configured as described above, as shown in FIG. 3, a predetermined number is input to the keypad 211 provided in the outdoor housing 210 while the door 2 is locked. When the motor 314 is driven to rotate the main rotating member 340. In addition, since the first pressing part 342 of the main rotating member 340 pressurizes the pressurized protrusion 333 of the intermediate member 330 during the rotation of the main rotating member 340, the dead bolt 320 is disposed in the housing. The door 2 is unlocked by moving in the direction immersed with respect to. In addition, since the main rotating member 340, the first rotating member 350, and the second rotating member 360 are disposed to be spaced apart from each other in the thickness direction of the door 2, the first rotating member 340 is rotated. The pressing unit 342 is not caught by the first pressing unit 355 or the second pressing unit 365. Therefore, when the main rotating member 340 is rotated, the first rotating member 350 and the second rotating member 360 do not rotate.

And when the door (2) is locked as shown in Figure 3, when the user in the room rotates the handle 120 clockwise to open the door (2), the handle pin coupled to the handle ( 130 presses the first insertion protrusion 353 while rotating clockwise with the handle 120, so that the first rotation member 350 rotates clockwise. While the first rotating member 350 rotates, the first pressing portion 355 presses the inclined portion 334 of the intermediate member 330, and the intermediate member 330 is hinged by the rotation force generated at this time. 331 is rotated by the rotation axis to move to the second position. When the first rotating member 350 is continuously rotated while the intermediate member 330 is rotated, the first pressing unit 355 presses the pressurized protrusion 333 of the intermediate member 330 and thus the intermediate member 330. ) Moves linearly in the immersion direction of the dead bolt 320, and as a result, the locking of the door 2 is released as shown in FIG.

In addition, since the intermediate member 330 is linearly moved in the rotated state, the pressurized protrusion 333 of the intermediate member 330 is the main rotating member during the linear movement of the intermediate member 330 as shown in FIGS. 6A and 6B. Since the second pressing part 343 of 340 is not caught, the main rotating member 340 does not rotate. Therefore, a problem that occurs when the main rotating member 340 and the motor 314 coupled thereto rotates together with the first rotating member 350, for example, a problem that requires a large force to turn the handle 120. The motor 314 is manually rotated by an external force, thereby preventing the motor 314 from being damaged or the like.

In addition, the user can lock the door 2 by turning the handle 120 on the indoor side. That is, as shown in FIG. 4, when the user turns the handle 120 counterclockwise in a room in which the door is unlocked, the handle pin 130 coupled to the handle 120 together with the handle 120. Since the second insertion protrusion 363 is pressed while rotating counterclockwise, the second rotation member 360 rotates counterclockwise. While the second rotating member 360 rotates, the second pressing part 365 presses the taper part 335 of the intermediate member 330, and the intermediate member 330 rotates by the rotation force generated at this time. It is moved to the second position. In addition, when the second member 330 is rotated and the second rotary member 360 is continuously rotated, the second pressing part 365 presses the pressurized protrusion 333 of the intermediate member 330, thereby preventing the intermediate member ( 330 moves linearly in the protruding direction of the dead bolt 320, and as a result, the door 2 is locked as shown in FIG.

As described above, in the present embodiment, it is possible to release the locking of the door 2 only by rotating the handle 120 in the room, so in case of emergency, for example, in case of fire or earthquake, Even if the person on the side is mentally panic, it is possible to easily escape by rotating the handle (120). Therefore, it is possible to minimize human injury. The door 2 may be locked by rotating the handle 120 in the opposite direction to the direction in which the door 2 is unlocked.

In addition, in the process of locking and unlocking the door 2 indoors by turning the handle 120, since the intermediate member 330 is linearly moved, the pressure projection 333 and the first pressure part 342 are moved. Alternatively, the second pressing portions 343 do not meet each other. Therefore, it is easy to turn the handle 120, it is prevented that the motor 314 is damaged by the rotation of the motor 314 when the handle 120 is rotated. In particular, when the user rotates the handle 120 in the direction in which the user unlocks the door 2 indoors while the door is locked by the motor 314, that is, the main rotating member 340 and the first rotating member 350. Are rotated in opposite directions, the rotation path of the pressure projection 333 is separated from the rotation path of the second pressure portion (343) by the rotation of the intermediate member 330, so that the motor through the pressure projection (333) A rotational force in the opposite direction to the driving direction is applied to the 314 to prevent the motor 314 from being damaged.

In addition, in order to lock and unlock the door 2 through the handle 120 indoors, two rotating members, that is, the first rotating member 350 and the second rotating member 360, are used. Since it is configured to rotate relatively, it is possible to reduce the rotation range of the rotating member. Therefore, the driving space required for driving the first and second rotating members 350 and 360 is reduced, and as a result, the internal space of the housing 310 can be efficiently used.

In the above, preferred embodiments of the present invention have been described in detail, but the present invention is not limited to the above embodiments, and various modifications may be made by those skilled in the art within the technical spirit of the present invention. It is obvious.

For example, in the present embodiment, the inclined portion and the tapered portion are provided in the intermediate member, but the inclined portion and the tapered portion may be provided in the first rotating member and the second rotating member, respectively.

According to the present invention of the above configuration, it is possible to lock and unlock the door simply by turning the handle, so that the person in the room can easily unlock the door and escape outside in an emergency, and can easily lock the door. have.

In addition, when the door is locked and unlocked using the handle, since the handle is configured to rotate independently without interlocking with the motor, the handle can be easily rotated and the motor can be prevented from being damaged.

Claims (9)

A housing installed in the door; A dead bolt installed in the housing to lock and unlock the door so as to linearly move in a direction protruding and immersing with respect to the housing; A first rotating member coupled to the housing so as to be rotatable with respect to the housing and connected to the dead bolt so as to linearly move in the direction in which the dead bolt is immersed with respect to the housing; And It is coupled to the housing so as to be rotatable with respect to the housing, it is relatively rotatable with respect to the first rotating member, in connection with the rotation is connected to the dead bolt so that the dead bolt moves linearly in a direction protruding with respect to the housing Door lock device comprising a; second rotating member. The method of claim 1, The first rotating member is provided with a first insertion groove and a first insertion protrusion, The second rotating member is provided with a second insertion groove and a second insertion protrusion, The first insertion protrusion is inserted into the second insertion groove, the second insertion protrusion is inserted into the first insertion groove, The first insertion groove is formed to include a rotation path of the second insertion protrusion, And the second insertion groove part is formed to include a rotation path of the first insertion protrusion part. The method of claim 2, A handle installed at an interior side of the door to be rotatable with respect to the door; And It rotates in conjunction with the rotation of the handle, and is disposed between the first insertion protrusion and the second insertion protrusion, and during the rotation in one direction by pressing the first insertion projection to rotate the first rotating member in the one direction And a handle pin configured to press the second insertion protrusion to rotate the second rotation member in the opposite direction when the rotation is performed in the opposite direction to the one direction. The method of claim 3, wherein The dead bolt is provided with a pressurized protrusion, The first rotating member is formed with a first pressing portion for pressing the pressurized projection when the first rotating member is rotated, The second rotating member, wherein the pressurized projection is disposed between the first pressing portion and the door lock, characterized in that the second pressing portion for pressing the pressurized projection during the rotation of the second rotating member is formed. Device. The method according to any one of claims 1 to 3, An intermediate member which is linearly movable with the dead bolt and coupled to the dead bolt so as to be rotatable with respect to the dead bolt, and having a pressurized protrusion; The first rotating member is provided with a first pressing portion for linearly moving the intermediate member by pressing the pressurized protrusion when the first rotating member is rotated, The second rotating member may include a pressurized protrusion part disposed between the first press part and a second press part configured to pressurize the pressurized protrusion part when the second rotating member rotates to linearly move the intermediate member. It is At least one of the intermediate member and the first rotating member is provided with an inclined portion formed to be inclined with respect to the moving direction of the dead bolt so that the intermediate member is pressed by the first pressing unit to rotate when the first rotating member is rotated. And At least one of the intermediate member and the second rotating member is provided with a taper formed to be inclined with respect to the moving direction of the dead bolt so that the intermediate member is pressed by the second pressing unit to rotate when the second rotating member is rotated. There is a door lock device. The method of claim 5, And an elastic member for elastically biasing the first rotating member and the second rotating member in a direction spaced apart from each other. The method of claim 6, The elastic member is a door lock device, characterized in that one side of the torsion spring is supported in contact with the first insertion protrusion and the other side is in contact with the second insertion protrusion. The method of claim 1, The first rotating member and the second rotating member are formed with a first pressing unit and a second pressing unit for pressing the pressurized protrusions in opposite directions when the first rotating member and the second rotating member rotate, respectively. A media member coupled to the dead bolt so as to be linearly movable with the dead bolt and rotatable with respect to the dead bolt, and having a pressurized protrusion disposed between the first pressing part and the second pressing part; And First to be installed in the housing to rotate in conjunction with the rotation of the motor installed in the housing, disposed to face each other with the pressurized projections therebetween, and during the rotation to press the pressurized projections in the opposite direction to each other And a main rotating member having a pressing portion and a second pressing portion formed thereon, The intermediate member is pressed by the rotating member when the rotation of at least one of the main rotating member, the first rotating member, the second rotating member is rotated by a predetermined angle, characterized in that the door lock device. The method of claim 8, At least one of the intermediate member and the first rotating member is provided with an inclined portion formed to be inclined with respect to the moving direction of the dead bolt so that the intermediate member is pressed by the first pressing unit to rotate when the first rotating member is rotated. And At least one of the intermediate member and the second rotating member is provided with a taper formed to be inclined with respect to the moving direction of the dead bolt so that the intermediate member is pressed by the second pressing unit to rotate when the second rotating member is rotated. There is a door lock device.

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