WO2008056948A1

WO2008056948A1 - Door lock device

Info

Publication number: WO2008056948A1
Application number: PCT/KR2007/005619
Authority: WO
Inventors: Hong-Sik Koo
Original assignee: Techsumer Co.Ltd.
Priority date: 2006-11-09
Filing date: 2007-11-08
Publication date: 2008-05-15

Abstract

The door lock device includes: a housing; a deadbolt; an intermediate member installed in the housing, and fixed to the deadbolt to be straightly moved with the deadbolt; a rotary member rotatably coupled to the housing, having a pressing part for pressing the intermediate member upon rotation of the rotary member in one direction and a first guide slot formed through the rotary member, and resiliently biased to be rotated in a reverse direction of the one direction; a handle pin inserted into the guide slot to be relatively rotated with respect to the rotary member, and movable between the first position and the second position; and a hooking member coupled to the rotary member to be rotated with the rotary member, movable between the hooking position and the hooking release position, and pressed by the handle pin to be rotated with the handle pin at the hooking position.

Description

Description DOOR LOCK DEVICE

Technical Field

[1] The present invention relates to a door lock device, and more particularly, to a door lock device capable of locking and unlocking a door. Background Art

[2] Conventionally, a door lock device is widely used in standard dwellings, such as houses, and in public buildings. Typically, the door lock device can be used as an entry control device for controlling entry to specific areas such as an entry door, a bank-safe, and so on.

[3] Such a door lock device generally includes a housing installed at a door, a latch bolt projecting from and inserting into the housing, and a deadbolt projecting from and inserting into the housing to lock and unlock the door. The latch bolt has a curved shape such that the latch bolt is in contact with a doorpost to be moved in the inserting direction when the door is closed. In addition, the deadbolt is driven by rotation of a motor to lock or unlock the door. Further, when the door is closed, a detection part installed at the door detects a magnetic part installed at the doorpost to generate a detection signal, and the motor is driven in response to the detection signal to automatically lock the door.

[4] Furthermore, a button for operating the motor and a pivotable handle are coupled to an indoor part of the door. A number input part for operating the motor, an authentication part such as a fingerprint recognition part, and a pivotable handle are installed at an outdoor part of the door. Therefore, in order to open the door from an indoor side, a user pushes the button to operate the motor, and then rotates the handle to open the door. In order to open the door from an outdoor side, a user inputs predetermined numbers into the number input part to operate the motor, and then rotates a handle to open the door. Eventually, the user should perform a primary operation for moving the deadbolt to open the door, for example, input of numbers or push of the button, and then perform a secondary operation of rotating the handle.

[5] However, in the door lock device constituted as described above, since the deadbolt should be driven to be reciprocated by the motor, the motor should have an output of a certain level or more. Moreover, when the deadbolt is obstructed by something, for example, when the deadbolt catches on the doorpost, the motor may be overloaded to cause damage to the motor. In addition, an impact is applied to the deadbolt while the door is opened or closed. Since the impact is transmitted to an output shaft of the motor for driving the deadbolt, it is likely to cause difficulty for the impact-sensitive motor.

[6] Further, in an emergency, for example, when a fire or an earthquake occurs, since persons at the indoor side may be in a panic, the persons may not be able to perform the primary operation, i.e., pushing the button to unlock the door, and may perform only the secondary operation of rotating the handle. As a result, the locking of the door cannot be released, and the persons at the indoor side may be trapped therein to cause personal injury. Disclosure of Invention Technical Problem

[7] In order to solve the above-described problems, it is an object of the present invention to provide a door lock device capable of reducing power consumption, improving durability, and readily unlocking a door from an indoor side in an emergency. Technical Solution

[8] According to an aspect of the present invention, a door lock device includes: a housing installed at a door; a deadbolt straightly movably installed at the housing in a direction of projecting from and inserting into the housing to lock or unlock the door, and resiliently biased in a direction projecting from the housing; an intermediate member installed in the housing, and fixed to the deadbolt to be straightly moved with the deadbolt upon straight movement of the deadbolt; a rotary member rotatably coupled to the housing, having a pressing part for pressing the intermediate member such that the deadbolt moves in a direction of inserting into the housing upon rotation of the rotary member in one direction and a first guide slot formed through the rotary member, and resiliently biased to be rotated in a reverse direction of the one direction; a handle pin inserted into the guide slot to be relatively rotated with respect to the rotary member, and movable between the first position spaced apart from a rotation center axis of the rotary member and the second position disposed to be rotated to a certain distance around the rotation center axis by the rotation center axis from the first position; and a hooking member coupled to the rotary member to be rotated with the rotary member upon rotation of the rotary member, movable between the hooking position disposed on a rotation path of the handle pin and the hooking release position spaced apart from the rotation path of the handle pin, and pressed by the handle pin to be rotated with the handle pin at the hooking position upon rotation of the handle pin.

[9] According to another aspect of the present invention, a door lock device includes: a housing installed at a door; a deadbolt straightly movably installed at the housing in a direction of projecting from and inserting into the housing to lock or unlock the door, and resiliently biased in a direction projecting from the housing; an intermediate member installed in the housing, and fixed to the deadbolt to be straightly moved with the deadbolt upon straight movement of the deadbolt; a rotary member rotatably coupled to the housing, having a pressing part for pressing the intermediate member such that the deadbolt moves in a direction of inserting into the housing upon rotation of the rotary member in one direction, resiliently biased to be rotated in a reverse direction of the one direction, and having a drive projection; a pressing member installed at the housing to be straightly moved with respect to the housing, and having a first pressing projection and a second pressing projection disposed opposite to each other with the drive projection disposed therebetween; and a motor that is bi- directionally rotatable, and drives the pressing member such that the drive projection is pressed by the first pressing projection or the second pressing projection to rotate the rotary member. [10] According to still another aspect of the present invention, a door lock device includes: a housing installed at a door; a deadbolt straightly movably installed at the housing in a direction of projecting from and inserting into the housing to lock or unlock the door, and resiliently biased in a direction projecting from the housing; an intermediate member installed in the housing, and fixed to the deadbolt to be straightly moved with the deadbolt upon straight movement of the deadbolt; a rotary member rotatably coupled to the housing, having a pressing part for pressing the intermediate member such that the deadbolt moves in a direction of inserting into the housing upon rotation of the rotary member in one direction and a first guide slot formed through the rotary member, and resiliently biased to be rotated in a reverse direction of the one direction; a rotary drive member disposed in the housing to be spaced apart from the rotary member, rotatably coupled to the housing, connected to the deadbolt such that the deadbolt moves in a direction inserting into the housing during rotation of the rotary member, and having a push part; an intermediate movement member coupled to the intermediate member to be moved with the intermediate member, and movable between the pressing position disposed on a rotation path of the push part to be pressed by the push part so that the deadbolt moves in a direction inserting into the housing during rotation of the rotary drive member and the pressing release position spaced apart from the rotation path of the push part; and a resilient member for resiliently biasing the rotary drive member such that the rotary drive member is rotated in a direction of releasing the pressing by the push part of the intermediate movement member.

Advantageous Effects

[11] As can be seen from the foregoing, a door lock device is configured as a semiautomatic type to increase durability in comparison with a conventional art. In addition, since the locking of the door can be readily released by simply rotating a handle, people can readily escape from the indoor side in an emergency to minimize personal injury. Further, it is possible to use a motor having small output to reduce energy consumption.

Brief Description of the Drawings [12] FIG. 1 is an exploded perspective view of a door lock device in accordance with a first exemplary embodiment of the present invention; [13] FIG. 2 is a partial cross-sectional view of an inner structure of a mortise shown in

FIG. 1; [14] FIG. 3 schematically shows a state in which a deadbolt shown in FIG. 2 is inserted into a housing; [15] FIG. 4 schematically shows a state in which a hooking member shown in FIG. 2 is located at the hooking position; [16] FIG. 5 schematically shows a state in which a projection length adjustment member shown in FIG. 2 is projected and hooked by the deadbolt; [17] FIG. 6 is a rear view of the mortise shown in FIG. 2, showing a process of preventing rotation of a handle pin by an anti-rotation member; [18] FIGS. 7 and 8 are partial cross-sectional views of inner structures of mortises of door lock devices in accordance with second and third exemplary embodiments of the present invention, respectively; [19] FIG. 9 is an exploded perspective view showing coupling relations between a rotary member, a handle pin, a hooking member, and a pressing member shown in FIG. 8; [20] FIG. 10 is a partial cross-sectional view of an inner structure of a mortise of a door lock device in accordance with a fourth exemplary embodiment of the present invention;

[21] FIG. 11 is a schematic cross-sectional view taken along the line XI-XI of FIG. 10;

[22] FIG. 12 is a schematic side view taken along the line XII-XII of FIG. 10;

[23] FIG. 13 is a side view of a rotated state of a drive member shown in FIG. 12;

[24] FIG. 14 is a schematic cross-sectional view taken along the line XIV-XIV of FIG.

10; [25] FIG. 15 schematically shows a state in which a deadbolt is inserted into a housing by rotation of a rotary pin shown in FIG. 10; [26] FIG. 16 schematically shows a state in which a deadbolt is inserted into the housing by rotation of a handle pin shown in FIG. 10; [27] FIG. 17 is an exploded perspective view of a rotary member, a rotary drive member, an intermediate member, an intermediate movement member, a rotary pin, a handle pin, and a shaft shown in FIG. 10; [28] FIG. 18 is a partial cross-sectional view of an inner structure of a mortise of a door lock device in accordance with a fifth exemplary embodiment of the present invention;

[29] FIG. 19 schematically shows a state in which a pressing member shown in FIG. 18 is pressed by a rotary body and located at the pressing position;

[30] FIG. 20 is an exploded perspective view of major components of the mortise shown in FIG. 18;

[31] FIG. 21 is a schematic view for explaining a relationship between a sliding pin part shown in FIG. 20 and a stopper member for fixing the sliding pin part; and

[32] FIGS. 22, 23 and 24 are partial cross-sectional views of inner structures of mortises of door lock devices in accordance with sixth, seventh and eighth exemplary embodiments of the present invention, respectively. Best Mode for Carrying Out the Invention

[33] Reference will now be made in detail to exemplary embodiments of the present invention illustrated in the accompanying drawings.

[34] Referring to FIGS. 1 to 6, a door lock device 1 in accordance with a first exemplary embodiment of the present invention includes an indoor unit 100, an outdoor unit 200, and a mortise 300.

[35] The indoor unit 100 includes an indoor housing 110 coupled to an indoor side of a door 2, and a handle 120 pivotally coupled to the indoor housing 110. A rotary pin 130 is engaged with the handle 120. The rotary pin 130 is spaced apart from a rotary center axis Cl of the handle 120. The rotary pin 130 is installed to be rotated with the handle 120 upon pivotal movement of the handle 120. That is, the rotary pin 130 is rotated around the rotary center axis Cl of the handle by the rotary center axis Cl of the handle 120 upon pivotal movement of the handle 120. In addition, the handle 120 is re- siliently biased by a torsion spring (not shown) to be returned to its original position upon release of the handle 120.

[36] The outdoor unit 200 includes an outdoor housing 210 coupled to an outdoor side of the door 2, and a handle 220 pivotally coupled to the outdoor housing 210. The outdoor housing 210 includes an authorization part, for example, a number input part, a fingerprint recognition part, a card authorization part, and so on, and in this embodiment, the number input part 211 is installed thereon.

[37] The handle 220 includes a key assembly 230 having a keyhole 231 and rotatably engaged with the handle 220. The key assembly 230 can be relatively rotated with respect to the handle 220. A bar-shaped shaft (not shown) is rotatably coupled to the key assembly 230. When a key having a shape corresponding to the keyhole 231 is inserted into the keyhole 231 and then rotated, the shaft is rotated in the same direction as a rotational direction of the key. In addition, the shaft can be relatively rotated with respect to the key assembly 230 within a certain angular range. Further, a handle pin 240 is engaged with the handle 220. The handle pin 240 is spaced apart from a rotary center axis C2 of the handle 220. The handle pin 240 is installed to be rotated with the handle 220 upon pivotal movement of the handle 220. That is, the handle pin 240 is rotated around the rotary center axis C2 of the handle 220 by the rotary center axis C2 of the handle 220 upon pivotal movement of the handle 220. In addition, the handle 220 is resiliently biased by a torsion spring (not shown) to be returned to its original position upon release of the handle 220.

[38] The mortise 300 is installed in the door 2. The mortise 300 includes a housing 10, a deadbolt 20, an intermediate member 30, a latch bolt 40, a rotary member 50, a rotary body 51, a rotary drive means, an anti-rotation member 70, and a projection length adjustment member 75.

[39] The housing 10 is inserted into the door 2 such that the housing 10 is substantially aligned with a side surface of the door 2 shown in a broken line in FIG. 2. The housing 10 includes a case 11, a front plate 12, and a cover 13, which are coupled to each other. The front plate 12 has a deadbolt through-hole 121, and a latch bolt through-hole 122.

[40] The deadbolt 20 is installed at the housing 10, and can be straightly moved in a direction of projecting from or inserting into the housing 10. The deadbolt 20 is inserted into a deadbolt accommodating hole 3a formed at a doorpost 3 through the deadbolt through-hole 121 to lock the door 2 as shown in FIG. 2, and is separated from the deadbolt accommodating hole 3a to unlock the door 2 as shown in FIG. 3. The deadbolt 20 has an elongated hole 21 longitudinally formed in a movement direction of the dead bolt. The deadbolt 20 is resiliently biased by a compression coil spring 22 in a direction projecting toward the housing 10. One end of the compression coil spring 22 is supported by a pin 23 fixed to the case 11 in a contact manner, and the other end of the compression coil spring 22 is supported by an inner sidewall of the elongated hole 21 in a contact manner.

[41] The intermediate member 30 is installed in the housing 10. The intermediate member 30 is fixed to the deadbolt 20 to be straightly moved with the deadbolt 30 upon straight movement of the deadbolt 20. A threshold 31 is formed at an end of the intermediate member 30.

[42] The latch bolt 40 is installed at the housing 10 to be straightly moved through the latch bolt through-hole 122 in a direction of projecting from and inserting into the housing 10. The latch bolt 40 is inserted into the latch bolt accommodating hole 3b formed at the doorpost 3 in order to prevent the door from being arbitrarily opened by wind or weak vibration. The latch bolt 40 is resiliently biased by a resilient member (not shown), for example, a compression coil spring, in a direction of projecting from the housing 10. [43] A rotary member 50 is rotatably coupled to the housing 10. The rotary member 50 is rotated in one direction as shown in FIG. 2, i.e., clockwise, to unlock the door 2 as shown in FIG. 3. In addition, the rotary member 50 is resiliently biased in a reverse direction of the one direction, i.e., counterclockwise, by a torsion spring (not shown). The rotary member 50 has a coupling hole 507, and a through-hole 508 connected to the coupling hole 507. The coupling hole 507 is concentrically disposed to a rotational center of the rotary member 50.

[44] The rotary member 50 includes a disc part 501 formed in a plate structure, and a hooking part 502 and a pressing part 503 projecting from an outer periphery of the disc part 501.

[45] The hooking part 502 is spaced apart a predetermined distance from an end of the deadbolt 20. The hooking part 502 is disposed on a movement path of the deadbolt 20 with the door 2 being locked. In addition, with the door locked as shown in FIG. 2, when the deadbolt 20 is pushed in a direction of inserting into the housing, the deadbolt 20 is hooked by the hooking part 502 to restrict movement of the deadbolt 20. Therefore, in a state that the door 2 is locked, it is impossible to forcedly push the deadbolt 20 to unlock the door 2.

[46] The pressing part 503 is hooked by the threshold 31 of the intermediate member 30 during one direction rotation, i.e., clockwise rotation of the rotary member 50. In addition, the intermediate member 30 is pressed to be straightly moved rightward from the moment when the pressing part 503 is hooked by the threshold 31. Therefore, when the rotary member 50 is rotated with the deadbolt 20 projecting from the housing 10, the deadbolt 20 moves in a direction of inserting into the housing 10 to unlock the door 2.

[47] In addition, the rotary member 50 has a first guide slot 504 and a second guide slot

505. The first and second guide slots 504 and 505 have a curved shape.

[48] The rotary body 51 is inserted into the coupling hole 507. The rotary body 51 is rotatably coupled to the housing 10 by a center of the coupling hole 507. The rotary body 51 is concentrically coupled to the rotary member 50. The rotary body 51 has a projection 512 projecting therefrom and disposed in the through-hole 508. In addition, while the rotary body 51 is relatively rotated with respect to the rotary member 50 until the projection 512 of the rotary body is in contact with an inner wall of the through- hole 508 when the rotary body 51 is rotated clockwise or counterclockwise as shown in FIG. 2, the projection 512 presses the rotary member 50 to be rotated therewith just after the projection 512 is in contact with the inner wall of the through-hole 508. In addition, the rotary body 51 has a keyhole 511 into which the shaft of the key assembly 230 is inserted. The keyhole 511 is complimentarily formed to the shape of the shaft of the key assembly 230. Therefore, when a key is inserted into the keyhole 231 of the key assembly and then rotated, the shaft rotates the rotary body 51 and the projection 512 of the rotary body presses the rotary member 50 to be rotated, thereby releasing the locking of the door 2.

[49] A rotary drive means rotates the rotary member 50 in one direction. The rotary drive means includes a handle pin 240, a hooking member 61, a pressing member 63, a motor 64, and a rotary pin 130.

[50] The handle pin 240 is inserted into a center of the first guide slot 504. The handle pin can be rotated in the first guide slot 504. The first guide slot 504 is formed to include a rotation path of the handle pin 240 to prevent rotation of the rotary member 50, since the handle pin 240 does not press the inner wall of the first guide slot 504 when the handle pin 240 is rotated. The handle pin 240 is rotated around the rotation center axis of the rotary member 50 by the rotation center axis of the rotary member 50. The handle pin 240 can be rotated between the first position spaced apart from the rotation center axis of the rotary member as shown in FIG. 2 and the second position rotated a certain distance from the first position as shown in FIG. 3.

[51] The hooking member 61 is coupled to the rotary member 50 to be rotated therewith upon rotation of the rotary member 50. In this first exemplary embodiment, the hooking member 61 is coupled to be rotated by a pivot shaft 611. The hooking member 61 can be rotated between the hooking position and the hooking release position. When the hooking member 61 is positioned at the hooking position as shown in FIG. 4, the hooking member 61 is disposed on a rotation path of the handle pin 240. In addition, in a state that the hooking member 61 is disposed on the hooking position, when the handle pin 240 is rotated in one direction, i.e., clockwise, the hooking member 61 is pressed by the handle pin 240 to rotate the rotary member 50 in one direction. Further, since the threshold of the intermediate member 30 is pressed when the rotary member 50 is rotated, the deadbolt 20 moves in a direction of inserting into the housing to unlock the door 2 as shown in FIG. 3. Meanwhile, when the hooking member 61 is positioned at the hooking release position as shown in FIG. 2, since the hooking member 61 is disposed outside the rotation path of the handle pin 240, the rotary member 50 is not rotated and the handle pin 240 is rotated only in the first guide slot 504, even though the handle pin 240 is rotated in one direction.

[52] The hooking member 61 is resiliently biased by a tension coil spring 62 in a direction of departing from a rotation path of the handle pin 240. One end of the tension coil spring 62 is fixed to the hooking member 61, and the other end of the tension coil spring 62 is fixed to the case 11.

[53] The pressing member 63 is movably installed at the housing 10 in a straight direction. The pressing member 63 can be moved between the pressing position and the pressing release position. When the pressing member 63 moves from the pressing release position shown in FIG. 2 to the pressing position shown in FIG. 4, the pressing member 63 presses the hooking member 61 such that the hooking member 61 overcomes a resilient force of the tension coil spring 62 to be disposed on the rotation path of the handle pin 240 during the movement. Then, when the pressing member 63 is returned to the pressing release position shown in FIG. 2, the pressing of the pressing member 63 against the hooking member 61 is released during the returning, and the hooking member 61 departs from the rotation path of the handle pan 240 by a resilient returning force of the tension coil spring 62. The pressing member 63 has a rack 631. The rack 631 is elongated in a movement direction of the pressing member 63.

[54] The motor 64 is installed in the housing 10. A pinion 641 is coupled to an output shaft of the motor 64, and is meshed with the rack 631 of the pressing member 63. In particular, in this embodiment, the pinion 641 is directly meshed with the rack 631. The motor 64 drives the pressing member 63 such that the pressing member 63 can be moved between the pressing position and the pressing release position. The motor 64 can be rotated clockwise and counterclockwise, for example, when the motor 64 is rotated clockwise, the pressing member 63 positioned at the pressing release position moves to the pressing position, and when the motor 64 is rotated counterclockwise, the pressing member 63 is returned to the pressing release position from the pressing position. When predetermined numbers are input into the number input part 211, the motor 64 is driven. At this time, the motor 64 is rotated clockwise to locate the pressing member 63 at the pressing position, and then, after a certain time, for example, 4 to 5 seconds, the motor 64 is rotated counterclockwise to locate the pressing member 63 at the pressing release position. In addition, even before 5 seconds elapse, it is possible to detect the moment when the handle pin 240 presses the pressing member 63, using a separate sensor (not shown). Further, at the moment of detection by the sensor, the motor 64 is rotated counterclockwise to locate the pressing member 3 at the pressing release position.

[55] The rotary pin 130 is inserted into the second guide slot 505. The rotary pin 130 can be rotated around the rotation center axis of the rotary member 50 by the rotation center axis of the rotary member 50. In the state as shown in FIG. 2, when the rotary pin 130 is rotated clockwise, the rotary pin 130 presses the inner wall of the second guide slot 505 to rotate the rotary member 50 in one direction.

[56] The anti-rotation member 70 is coupled to be rotated by the pivot shaft 71 in the housing 10. The anti-rotation member 70 can be rotated between a free-rotation position shown in a solid line of FIG. 6 and the anti-rotation position shown in a broken line in FIG. 6. When the anti-rotation member 70 is located at the free-rotation position, the anti-rotation member 70 is spaced apart from the rotation path of the handle pin 240 to enable free rotation of the handle pin 240 between the first position and the second position. Meanwhile, when the anti-rotation member 70 is located at the anti-rotation position, the handle pin 240 is hooked by the anti-rotation member 70 to prevent the handle pin 240 from being rotated from the first position to the second position. The anti-rotation member 70 is driven by the motor (not shown) installed in the housing 10.

[57] The projection length adjustment member 75 is straightly movably coupled to the housing 10 in a direction crossing a movement direction of the deadbolt 20. When the deadbolt 20 projects from the housing 10 with the locking of the door 2 being released, the projection length adjustment member 75 restricts movement of the deadbolt 20 to adjust a projection length of the deadbolt 20. The projection length adjustment member 75 is disposed on a straight movement path of at least one of the deadbolt 20 and the intermediate member 30 when the projection length of the deadbolt 20 is adjusted. In this embodiment, the projection length adjustment member 75 is singly provided to be disposed on the straight movement path of the intermediate member 30 when the projection length of the deadbolt 20 is adjusted. The projection length adjustment member 75 can be located between the adjustment position shown in FIG. 5 and the adjustment position shown in FIG. 2. When the projection length adjustment member 75 is located at the adjustment position, since the projection length adjustment member 75 is hooked by the intermediate member 30 when the deadbolt 20 moves in a direction of projecting from the housing 10, it is possible to prevent the deadbolt 20 from being completely projected, thereby reducing the projection length of the deadbolt 20. Meanwhile, when the projection length adjustment member 75 is located at the spacing position, the projection length adjustment member 75 is spaced apart from the movement path of the intermediate member 30 to prevent interference with straight movement of the intermediate member 30. In addition, the projection length adjustment member 75 is installed to project from the indoor housing 110 to be straightly moved depending on push operation.

[58] In the door lock device 1 constituted as described above, an example of a process of releasing the locking of the door 2 from the indoor side and the outdoor side will be described.

[59] First, in order to unlock the door shown in FIG. 2 from the indoor side, when the handle 120 installed at the indoor part of the door is rotated, the rotary pin 130 is rotated with the handle 120. During rotation of the rotary pin 130, the rotary pin 130 presses the inner wall of the second guide slot 505 to rotate the rotary member 50 clockwise. In addition, since the hooking part 502 of the rotary member 50 is hooked by the threshold 31 of the intermediate member 30 to press the intermediate member 30 during rotation of the rotary member 50, the intermediate member 30 straightly moves rightward. Further, since the deadbolt 20 also moves in a direction of inserting into the housing 10 depending on movement of the intermediate member 30, the locking of the door 2 is released. As described above, by simply rotating the handle 120 at the indoor side, the locking of the door 2 can be readily released.

[60] Next, in order to unlock the door shown in FIG. 2 from the outdoor side, when predetermined numbers are input into the number input part 211 to receive authentication, the motor 64 is rotated clockwise to locate the pressing member 63 at the pressing position shown in FIG. 4. During the movement, the pressing member 63 presses the hooking member 61 to finally locate the hooking member 61 at the hooking position shown in FIG. 4. When the handle 220 is rotated with the hooking member 61 being located at the hooking position, the handle pin 240 is rotated with the handle 220 to locate the handle pin 240 at the second position shown in FIG. 3. In addition, during rotation of the handle pin 240, the handle pin 240 presses the hooking member 61 to rotate the rotary member 50 with the handle pin 240 in one direction. When the rotary member 50 is rotated in one direction, the locking of the door 2 is released as described above. Meanwhile, when the authentication cannot be received, the hooking member 61 is not located at the hooking position to maintain the locking of the door 2.

[61] In addition, when the motor 64 is out of order, in order to unlock the door 2 from the outdoor side, a key is inserted into a keyhole 231 of the key assembly 230 and the keyhole 511 of the rotary body 51 to be rotated.

[62] Meanwhile, in a state that the handle 220 or 120 is rotated to unlock the door 2, the deadbolt 20 maintains the inserted state, not projecting, by a conventional anti- projection structure, even though the handle 220 or 120 is released. Further, when the door 2 is closed after opening, the deadbolt 20 automatically projects to lock the door 2 by a conventional relocking means. Since the anti-projection means or the relocking means is already known in the art from Korean Patent Application No. 2006-92486, etc., a detailed description thereof will be omitted.

[63] As described above, in this embodiment, since the locking of the door 2 can be released by simply rotating the handle 120 from the indoor side, even in an emergency, for example, when a fire or an earthquake occurs, it is possible for a person at the indoor side to readily escape by simply rotating the handle 120, even though the person may be in panic. Therefore, it is possible to minimize personal injury.

[64] In addition, in this embodiment, after receiving authentication from the number input part 211 from the outdoor side, the handle 240 is configured to be rotated to unlock the door 2. Different from the conventional automatic type of releasing the locking of a door by drive of a motor, the door lock device in accordance with the present invention is configured as a semi-automatic type to increase durability thereof. Further, different from the conventional art of directly moving a deadbolt using a motor, since the motor 64 is configured to move the pressing member 63, it is possible to use a smaller motor than the conventional art. Furthermore, power consumption may also be reduced.

[65] Meanwhile, in the first exemplary embodiment, while the door lock device is configured as a semi-automatic type such that the locking of the door is released by rotating the handle pin or the rotary pin after a user's numerical authentication is received, as shown in FIG. 7, the door lock device in accordance with the present invention may be configured as an automatic type such that the locking of the door can be released by only driving the motor through the numerical authentication.

[66] The mortise 300a in accordance with a second exemplary embodiment of the present invention includes a housing 10, a deadbolt 20, an intermediate member 30, and a rotary member 50a, similar to the mortise 300 of the door lock device described with reference to FIGS. 1 to 6.

[67] A drive projection 506 is formed at the rotary member 50a. The drive projection

506 projects from an outer periphery of a disc part 501.

[68] A rotary drive means includes a pressing member 63a and a motor 64.

[69] The pressing member 63a is straightly movably installed at the housing 10. The pressing member 63a includes a first pressing projection 632 and a second pressing projection 633. The first pressing projection 632 and the second pressing projection 633 are disposed opposite to each other. In addition, as shown in FIG. 7, a drive projection 506 is disposed between the first pressing projection 632 and the second pressing projection 633. Further, a rack 631 is formed at the pressing member 63a. The rack 631 is elongated in a movement direction of the pressing member 63a.

[70] The motor 64 is connected to the pressing member 63a to straightly move the pressing member 63a. The motor 64 can be rotated clockwise and counterclockwise. A pinion 641 is coupled to an output shaft of the motor 64, and is meshed with the rack 631. In this second exemplary embodiment, the pinion 641 and the rack 631 are directly engaged with each other.

[71] As shown in FIG. 7, when the motor 64 is rotated clockwise with the door 2 being locked, leftward movement of the pressing member 63a allows the first pressing projection 632 to press the drive projection 506, thereby rotating the rotary member 50a clockwise. Therefore, the locking of the door 2 is released. Meanwhile, when the motor 64 is rotated counterclockwise with the locking of the door 2 being released, the pressing member 63a is returned to its original position. In this process, the second pressing projection 633 presses the drive projection 506 to rotate the rotary member 50 counterclockwise. In addition, the deadbolt 20 projects by a resilient recovering force of the compression coil spring to lock the door 2 again. Further, the rotary member 50 is resiliently biased by a torsion spring (not shown) to more readily rotate the rotary member 50 counterclockwise. As described above, in this embodiment, the motor 64 is rotated clockwise and counterclockwise to drive the deadbolt 20, thereby locking and releasing the door 2.

[72] Furthermore, in the door lock device of the second exemplary embodiment, the indoor unit and the outdoor unit have no handle. That is, the indoor unit includes an indoor housing, and an operation button for operating a motor. The outdoor unit includes an outdoor housing, and an authentication part such as a number input part.

[73] While the pressing member of the first exemplary embodiment is configured to be returned to the pressing release position when the handle pin is rotated, when the door lock device is constituted as shown in FIGS. 8 and 9 it is possible to maintain the pressing member at the pressing position even though the handle pin is rotated.

[74] In a mortise 300b of the third exemplary embodiment, a hooking member 61b includes a rotary part 612 inserted into the pivot shaft 611 to be rotated with respect to the rotary member 50, and a projection 613 formed at the rotary part 612 to project toward the rotary member 50. As shown in FIG. 12, the rotary part 612 is spaced apart a predetermined distance from the disc part 501 of the rotary member 50. In addition, the projection 613 is also spaced apart from the disc part 501.

[75] The pressing member 63b has an arc-shaped contact surface 634. A center of curvature of the contact surface 634 is located on the rotation center axis of the rotary member 50 when the pressing member 63b is positioned at the pressing position. When the pressing member 63b is located at the pressing release position, the contact surface 634 is not in contact with the hooking member 61b. When the pressing member 63b moves from the pressing release position to the pressing position, the contact surface 634 is in contact with the hooking member 61b to press the hooking member 61b to locate the hooking member 61b at the hooking position.

[76] Meanwhile, in order to unlock the door from the outdoor side in a state that the door

2 is locked, the motor 64 is first driven to locate the pressing member 63b at the pressing position. At this time, the contact surface 634 is in contact with the projection 613 of the hooking member 61b. Then, when the handle pin 240 is rotated, the handle pin 240 presses the hooking member 61b to rotate the rotary member 50 in one direction, i.e., clockwise. At this time, since the center of curvature of the contact surface 634 is located at the rotation center axis of the rotary member 50, the projection 613 of the hooking member 61b is in contact with the contact surface 634 of the pressing member 63b to be relatively slid therewith. In addition, since the hooking member 61b is spaced a predetermined gap from the rotary member 50, as shown in FIG. 8, the pressing member 63b is not hooked by the hooking member 61b when the rotary member 50 is rotated.

[77] Referring to FIGS. 10 to 17, the door lock device of a fourth exemplary embodiment has a different mortise than the door lock device in accordance with the first exemplary embodiment, the mortise installed at the door lock device in accordance with the fourth exemplary embodiment will be described below.

[78] The mortise 300c in accordance with the fourth exemplary embodiment, similar to the mortise 300 of the first exemplary embodiment, includes a housing 10, a deadbolt 20, an intermediate member 30c, a latch bolt 40, and a rotary member 50c. However, different from the first exemplary embodiment, the intermediate member 30c has a pair of bracket parts 32, and the rotary member 30c has no hooking part. In addition, similar to the first exemplary embodiment, the rotary member 50c of the fourth exemplary embodiment may also have a hooking part.

[79] Meanwhile, the mortise 300c of the fourth exemplary embodiment further includes a rotary drive member 80, an intermediate movement member 90, bells 95, and impact members 96.

[80] The rotary drive member 80 is rotatably coupled to the housing 10. The rotary drive member 80 has a shape and a size substantially equal to the rotary member 50c. The rotary drive member 80 is spaced apart from the rotary member 50c in a thickness direction of the door 2. The rotary drive member 80 is concentrically coupled to the rotary member 50c. The rotary drive member 80 is rotated in one direction shown in FIG. 10, i.e., clockwise, to unlock the door 2 shown in FIGS. 15 and 16. At this time, the intermediate movement member 90 is located at the pressing position. In addition, the rotary drive member 80 is resiliently biased by a torsion spring (not shown) to be rotated in a reverse direction of the one direction, i.e., counterclockwise.

[81] The rotary drive member 80 includes a disc part 801 formed of a plate-shape, and a hooking part 802 and a push part 803 projecting from an outer periphery surface of the disc part 801.

[82] The disc part 801 has a coupling hole 807, and a through-hole 808 connected to the coupling hole 807. The coupling hole 807 is concentrically disposed at a rotation center of the rotary drive member 80. In addition, the disc part 801 has a first guide slot 804 and a second guide slot 805. The first guide slot 804 and the second guide slot 805 have a curved shape. A handle pin 804 is inserted into the first guide slot 804, and a rotary pin 130 is inserted into the second guide slot 805. The second guide slot 805 has a shape and a size equal to the second guide slot 505 of the rotary member 50c, and is concentrically disposed at the second guide slot 505 of the rotary member 50c.

[83] The hooking part 802 is spaced apart a predetermined distance from an end of the deadbolt 20. The hooking part 802 is disposed on a movement path of the deadbolt 20 with the door 2 being locked. Therefore, in a state that the door 2 is locked as shown in FIG. 2, when the deadbolt 20 is pushed in a direction inserting into the housing, the deadbolt 20 is hooked by the hooking part 802 to restrict movement of the deadbolt 20. [84] The push part 803 is hooked by a threshold 91 of the intermediate movement member 90 when the rotary drive member 80 is rotated in one direction, i.e., clockwise, as described below. At this time, the intermediate movement member 90 is located at the pressing position as described below. Then, from the moment when the push part 803 is hooked by the threshold 91, the intermediate movement member 90 is pressed to be moved rightward.

[85] The intermediate movement member 90 is inserted into the pivot shaft 92 inserted into the bracket part 32 of the intermediate member 30c to be rotated with respect to the intermediate member 30c by the pivot shaft 92 as the rotation center axis. In addition, the intermediate movement member 90 can be straightly moved with the intermediate member 30. The threshold 91 is formed at an end of the intermediate movement member 90. The intermediate movement member 90 can be rotated between the pressing position shown in a broken line in FIG. 11 and the pressing release position shown in a solid line of FIG. 11. When the intermediate movement member 90 is located at the pressing position, since the threshold 91 of the intermediate movement member 90 is disposed on a rotation path of the push part 803 of the rotary drive member 80 as shown in FIG. 13, the threshold 91 of the intermediate movement member 90 is pressed by the push part 803 of the rotary drive member 80 to unlock the door 2 when the rotary drive member 80 is rotated. Meanwhile, when the intermediate movement member 90 is located at the pressing release position, since the threshold 91 of the intermediate movement member 90 departs from the rotation path of the push part 607 of the rotary drive member 80 as shown in FIG. 12, the threshold 91 of the intermediate movement member 90 is not pressed to maintain the locking of the door 2 even though the rotary drive member 80 is rotated.

[86] The intermediate movement member 90 is driven by a drive unit. The drive unit includes a motor 93 and a drive member 94.

[87] The motor 93 is fixed to the case 11. The motor 93 can be rotated clockwise and counterclockwise.

[88] The drive member 94 is coupled to an output shaft of the motor 93 to be rotated by the output shaft of the motor 93 when the motor 93 is rotated clockwise and counterclockwise. The drive member 94 can be selectively located at the first position shown in FIG. 12 and the second position shown in FIG. 13. When the motor 93 is not operated, the drive member 94 is located at the first position shown in FIG. 12. When the drive member 94 is rotated to be located at the second position by the clockwise rotation of the motor 93, the drive member 94 presses the intermediate movement member 90 to rotate the intermediate movement member 90 by the pivot shaft 92 to locate the member 90 at the pressing position during the rotation. Then, when the motor 93 is rotated counterclockwise in a state that the drive member 94 is located at the second position, the drive member 94 is returned to the first position. In this process, the pressing against the intermediate movement member 90 is released to locate the intermediate movement member 90 at the pressing release position.

[89] The pair of bells 95 are installed in the housing 10. Each bell 95 makes a sound by an external physical impact.

[90] The pair of impact members 96 may be attached to an outer periphery of the disc part 801 of the rotary drive member 80. In this embodiment, each impact member 96 is integrally formed with the rotary drive member 80. The impact member 96 hits the bell 95 to inform a user of the locking and locking release of the door 2 when the door 2 is locked and when the locking of the door 2 is released. That is, in a state that the door 2 is locked as shown in FIG. 10, at the moment when the rotary drive member 80 is rotated to unlock the door 2, the impact member 96 hits the bell 95 to make a sound as shown in FIG. 16. In addition, when the deadbolt 20 projects from the housing 10 in a state that the locking of the door 2 is released as shown in FIG. 16, the rotary drive member 80 is rotated by a resilient force of a torsion spring counterclockwise to lock the door 2, and the impact member 96 hits the bell 95 to make a sound upon the locking of the door 2 as shown in FIG. 10.

[91] Further, the rotary body 51c is inserted into both the coupling hole 507 of the rotary member 50c and the coupling hole 807 of the rotary drive member 80. Both ends of the rotary body 51c are inserted into the case 11 and the cover 13. A pair of projections 512 project from the rotary body 51c and are disposed in a through-hole 508 of the rotary member 50c and a through-hole 808 of the rotary drive member 80. In addition, while the rotary body 51c is relatively rotated with respect to the rotary drive member 80 until the projections 512 of the rotary body 51c are in contact with inner walls of the through-holes 508 and 808 when the rotary body 51c is rotated clockwise and counterclockwise shown in FIG. 10, the projections 512 presses the rotary member 50c and the rotary drive member 80 to rotate the rotary body 51c together with the rotary member 50c and the rotary drive member 80 from the moment when the projections 512 are in contact with the inner walls of the through-holes 508 and 808.

[92] Meanwhile, the rotary member 50c and the rotary drive member 80 are rotated by the rotary pin 130 and/or the handle pin 240.

[93] The rotary pin 130 is inserted into the second guide slot 505 of the rotary member

50c and the second guide slot 805 of the rotary drive member 80. The rotary pin 130 is disposed to be in contact with the inner walls of the second guide slot 505 and the second guide slot 805. The rotary pin 130 can be rotated around the rotation center axis of the rotary member 50c by the rotation center axis of the rotary member 50c. Therefore, when the rotary pin 130 is rotated clockwise from the state shown in FIG. 10, the rotary pin 130 presses the inner walls of the second guide slot 505 and the second guide slot 805 to rotate both the rotary member 50c and the rotary drive member 80 clockwise as shown in FIG. 15.

[94] The handle pin 240 is inserted into the first guide slot 504 of the rotary member 50c and the first guide slot 804 of the rotary drive member 80. The handle pin 240 is disposed in contact with one inner wall of the first guide slot 804 of the rotary drive member 80. In addition, the handle pin 240 is disposed at a center of the first guide slot 504 of the rotary member 50c to be rotated in the first guide slot 504. The first guide slot 504 is configured to include the rotation path of the handle pin 240 such that the handle pin 240 does not press the inner wall of the first guide slot 504 during rotation of the handle pin 240, thereby preventing rotation of the rotary member 50c. The handle pin 240 is rotated around the rotation center axis of the rotary member 50c

[95] by the rotation center axis of the rotary member 50c. Therefore, when the handle pin 240 is rotated clockwise from the state shown in FIG. 10, the handle pin 240 presses the inner wall of the first guide slot 804 to rotate the rotary drive member 80 clockwise as shown in FIG. 16. At this time, since the handle pin 240 does not press the inner wall of the first guide slot 504, the rotary member 50c maintains its stop state as shown in FIG. 16.

[96] In the door lock device of the fourth exemplary embodiment constituted as described above, by simply rotating the handle 120 from the indoor, the pressing part 503 of the rotary member 50c presses the threshold 31 of the intermediate member 30 to straightly move the intermediate member 30 rightward to unlock the door 2 as shown in FIG. 15.

[97] In addition, in order to unlock the door from the outdoor side, when authentication is received from the number input part 211 to operate the motor 93, the motor 93 is rotated to locate the drive member 94 at the second position shown in FIG. 13. Further, the intermediate movement member 90 is pressed by the drive member 94 to be located at the pressing position during rotation of the drive member 94. When the handle 220 is rotated in a state that the intermediate movement member 90 is located at the pressing position, the handle pin 240 is rotated. During rotation of the handle pin 240, the handle pin 240 presses the inner wall of the first guide slot 804 to rotate the rotary drive member 80 clockwise from the state shown in FIG. 10. At this time, the rotary member 50c is not pressed by the handle pin 240 to maintain its stop state. During rotation of the rotary drive member 80, since the push part 803 of the rotary drive member presses the threshold 91 of the intermediate movement member 90 to straightly move the intermediate member 90 rightward, the deadbolt 20 moves in a direction inserting into the housing 10 to unlock the door 2 as shown in FIG. 16. If authentication is not received from the number input part 211, since the intermediate movement member 90 is located at the pressing release position, even though the handle 220 is rotated, it is possible to prevent the push part 803 of the rotary drive member from pressing the threshold 71 of the intermediate movement member, thereby maintaining the locking of the door 2.

[98] Referring to FIGS. 18 to 21, since a door lock device of a fifth exemplary embodiment has a mortise partially different from that of the door lock device of the first exemplary embodiment, only differences from the mortise 300 of the first exemplary embodiment will be described below.

[99] A mortise 300d of the fifth exemplary embodiment, similar to the mortise 300 of the first exemplary embodiment, includes a housing 10, a deadbolt 20, an intermediate member 30, a latch bolt 40, a rotary member 50d, a rotary body 5 Id, and a hooking member 6 Id. However, different from the first exemplary embodiment, the rotary member 50d has no through-hole, and a projection 512d of the rotary body 5 Id is disposed at an outer part of the rotary member 50d. The hooking member 6 Id includes a rotary part 612 coupled to the rotary member 50d and pivoted by the pivot shaft 611, and a projection 613 projecting from the rotary member 50d in a direction spaced apart therefrom.

[100] Meanwhile, a pressing member 63d installed at the mortise 300d of the fifth exemplary embodiment has a different structure than the pressing member 63 of the first exemplary embodiment. The pressing part 63d includes a sliding pin part 635 inserted into a slot 131 of a cover 13 to be slid in a longitudinal direction of the slot 131, a first pressing part 636 connected to the sliding pin part 635 and having an arc- shaped contact surface 634d, a second pressing part 637 connected to the sliding pin part 635 and having an L -shape to be pressed by a projection 512d of the rotary body 5 Id at the pressing position, and a downward extension part 638 downwardly extending from the sliding pin part 635 in an elongated manner. A center of curvature of a contact surface 634d is located at the rotation center axis of the rotary member 50d when the pressing member 63d is located at the pressing position. The contact surface 634d of the first pressing part presses the projection 613 of the hooking member 61d at the pressing position.

[101] The pressing member 63d is installed at the housing 10 to be straightly moved between the pressing position shown in FIG. 19 and the pressing release position shown in FIG. 18. When the pressing member 63d is located at the pressing position, the contact surface 634d of the pressing member 63d is in contact with the projection 613 of the hooking member 61d to press the projection 613, thereby locating the projection 613 at the hooking position. In addition, when the pressing member 63d is located at the pressing release position, the contact surface 634d of the pressing member 63d is not in contact with the projection 613 of the hooking member 61d to release the pressing of the contact surface 821 against the projection 613, thereby locating the hooking member 6 Id at the hooking release position. When the rotary body 5 Id is rotated in one direction, i.e., clockwise, the projection 512d of the rotary body 5 Id presses the second pressing part 637 of the pressing member 63d to locate the pressing member 63d at the pressing position. During movement of the pressing member 63d to the pressing position, the contact surface 634d of the pressing member 63d is in contact with the projection 613 of the hooking member 61d to press the projection 613, thereby overcoming a resilient force of a compression coil spring 62 to locate the hooking member 6 Id at the hooking position.

[102] In addition, a pair of stopper members 98 are coupled to the cover 13 such that the pressing member 63d fixes at the pressing position or the pressing release position. As shown in FIG. 21, the pair of stopper members 98 are disposed opposite to each other with the slot 131 interposed therebetween. Each stopper member 98 includes projections 981 spaced apart a predetermined distance from each other, and first and second grooves 982 and 983 concaved at the projections 981 and into which the sliding pin part 635 of the pressing member 63d is inserted. In addition, the stopper member 98 is formed of a resiliently deformable material to be resiliently deformed in a direction crossing the straight movement direction of the pressing member 63d. In this embodiment, each stopper member 98 is formed of a leaf spring.

[103] In a state that the pressing member 63d is located at the pressing release position shown in a solid line of FIG. 21, the sliding pin part 635 of the pressing member 63d is inserted into the first groove 982 of each stopper member 98 to fix its position. In this state, when the pressing member 63d is slid leftward, the sliding pin part 635 of the pressing member 63d presses the projection 981 of each stopper member 98 during the movement such that each stopper member 98 is resiliently deformed and the sliding pin part 635 of the pressing member 63d is simultaneously located at the pressing position shown in a broken line in FIG. 21. In addition, at the pressing position, the sliding pin part 635 of the pressing member 63d is inserted into the second groove 983 of each stopper member 98 to fix its position.

[104] Further, the mortise 300d of the fifth exemplary embodiment further includes a movable member 97. The movable member 97 can be straightly movably installed in the housing 10. The movable member 97 includes a main body 971, a rack part 972, and a pair of projections 973. The rack part 972 is elongated at one side of the main body 971 in a movement direction of the movable member 97, and is meshed with a pinion 641 coupled to an output shaft of the motor 64. The pair of projections 973 project from the main body 971 in a direction crossing the movement direction of the movable member 97, and in particular, in a direction perpendicular to the movement direction of the movable member 97. The pair of projections 973 are disposed to be spaced a predetermined gap from each other in a movement direction of the movable member 97. The downward extension part 638 of the pressing member is disposed between the pair of projections 973. When the movable member 97 moves, the extension part 638 is pressed by one projection of the pair of projections 973 to straightly move the pressing member 63d. In addition, a spaced distance between the pair of projections 973 is configured such that the extension part 638 is not in contact with the projection 973 when the pressing member 63d moves between the pressing position and the pressing release position.

[105] In the door lock device 1 constituted as described above, similar to the first exemplary embodiment, by simply rotating the handle 120 installed at the indoor part of the door, it is possible to unlock the door from the indoor side. Meanwhile, when the motor 64 is driven using the number input part 211 from the outdoor side, the pressing member 63d is pressed by the movable member 97 to be straightly moved. When the movable member 94 straightly moves, the projection 613d of the hooking member 61d is pressed by the contact surface 634d of the first pressing part to locate the hooking member 6 Id at the hooking position shown in FIG. 19. Then, when the handle 220 is rotated, the hooking member 6 Id is pressed by the handle pin 240 to unlock the door.

[106] While the pressing member 63d installed at the mortise 300d of the fifth exemplary embodiment is configured to be straightly moved and not to be resiliently deformed, a pressing member 63e may be configured to be rotated and to be resiliently deformed as shown in FIG. 22.

[107] That is, as shown in FIG. 22, in the mortise 300e of a sixth exemplary embodiment, the pressing member 63e can be rotatably installed between the pressing position and the pressing release position. A pivot shaft 635e of the pressing member 63e is inserted into the cover 13, and the pressing member 63e can be rotated with respect to the rotary member 50d by the pivot shaft 635e. In addition, a first pressing part 636e of the pressing member 63e may be formed of a resiliently deformable material, or the first pressing part 636e may include a plurality of components to be resiliently deformed. For example, the first pressing part 636e may be formed of a resiliently deformable material such as a leaf spring, a rubber material, and so on. In addition, the first pressing part 636e is configured to include a pair of rigid bodies, and a resilient member such as a compression coil spring, a leaf spring connecting the pair of rigid bodies, and so on, such that the first pressing part 636e can be resiliently deformed by a resilient force of the resilient member. In the sixth exemplary embodiment, the first pressing part 636e is formed of a leaf spring. In addition, the first pressing part 636e has a resilient force such that the first pressing part 636e is not resiliently deformed by the projection 613 when the projection 613 of the hooking member is pressed at the pressing position.

[108] Meanwhile, when the handle 220 is rotated and then released in order to unlock the door, the handle 220 is returned to its original state by a resilient recovering force of a torsion spring (not shown). However, when the door lock device is used for a long time, a resilient recovering force of the torsion spring is reduced. Therefore the handle pin 240 may be located at a position shown in a solid line of FIG. 22, not returned to its original position as shown in a broken line in FIG. 22 even though the handle 220 is released. As described above, when the handle pin 240 is returned to the position shown in a solid line of FIG. 22, even though the handle pin 240 is rotated after locating the pressing member 63e and the hooking member 6 Id at the pressing position and the hooking position by driving the motor 94 or rotating the rotary body 5 Id, since the handle pin 240 cannot press the projection 613 of the hooking member 61d, it is impossible to unlock the door 2.

[109] However, since the first pressing part 636e is configured to be resiliently deformed similar to the fifth exemplary embodiment, when the handle pin 240 shown in a solid line of FIG. 22 is rotated counterclockwise in a state that the projection 512d of the rotary body 5 Id presses a second pressing part 637 of the pressing member 63e as shown in FIG. 22, the projection 613 of the hooking member 61d is pressed by the handle pin 240 to be rotated by a pivot shaft 111 counterclockwise as shown in the broken line in FIG. 22. During the rotation, the first pressing part 636e is pressed by the projection 613 of the hooking member 6 Id to be resiliently deformed such that the handle pin 240 can be located at the position shown in the broken line in FIG. 22. As described above, when the handle pin 240 is located at the position shown in the broken line in FIG. 22, since the second pressing part 637 and the projection 613 of the hooking member 6 Id are returned to the position shown in a solid line of FIG. 22 by a resilient recovering force of the first pressing part 636e, the locking of the door 2 can be released upon clockwise rotation of the handle pin 240.

[110] While a seventh exemplary embodiment is configured such that the first pressing part 636e of the pressing member 63e can be resiliently deformed, as shown in FIG. 23, the second pressing part may be resiliently deformed, and the pressing member and the movable member may be connected to each other by the resilient member.

[I l l] That is, in the mortise 300e of the sixth exemplary embodiment, a second pressing part 637f of a pressing member 63f may be formed of a leaf spring to be resiliently deformed.

[112] In addition, the pressing member 63f is resiliently biased to be rotated to the pressing release position when the pressing member 63f is located at the pressing position by the compression coil spring s. One end of the compression coil spring s is fixed to a movable member 97f , and the other end of the compression coil spring s is fixed to the downward extension part 638. Further, different from the sixth exemplary embodiment, the movable member 97f has no projection. A rack part 972 is meshed with a pinion 641, and the pinion 641 is connected to a reduction part (not shown) including a reduction gear. Therefore, as shown in FIG. 23, even though the second pressing part 637f of the pressing member 63e is pressed by the projection 512d of the rotary body, the movable member 97f is not moved. In addition, the pressing member 63f is located at the pressing position or the pressing release position by a resilient force of the compression coil spring s generated during movement of the movable member 97f.

[113] In the mortise 300f of the seventh exemplary embodiment constituted as described above, similar to the fifth exemplary embodiment, even when the handle pin 240 is located at a position shown in a solid line of FIG. 23 due to long-term use of the door lock device, the handle pin 240 can be returned to the position shown in a broken line in FIG. 23 to unlock the door. That is, when the handle 220 is merely rotated counterclockwise in a state shown in a solid line of FIG. 23, since a first pressing part 634d of the pressing member 63f is pressed by the projection 613 of the hooking member 6 Id to be resiliently deformed as shown in the broken line in FIG. 23, the handle pin 240 can be located at the position shown in the broken line in FIG. 23.

[114] Meanwhile, FIG. 24 illustrates a mortise 300g of the door lock device in accordance with an eighth exemplary embodiment of the present invention.

[115] Referring to FIG. 24, in the mortise 300g of the eighth exemplary embodiment, a tooth-shaped part 513 having a plurality of teeth is formed at an outer periphery of a rotary body 5 Ig. The tooth-shaped part 513 of the rotary body 5 Ig and the rack part 972 of the movable member 97f are meshed with pinions p. A pivot shaft a of the pinion p is coupled to the housing 10. Therefore, the pinion p is rotated by rotation of the rotary body 5 Ig as well as operation of the motor 64, and the movable member 97f can be straightly moved depending on the rotation of the pinion p. Different from the seventh exemplary embodiment, a pressing member 80c has no second pressing part.

[116] In the mortise 300g constituted as described above, different from the mortise 300f the movable member 97f moves at the same time that the pinion p is rotated upon rotation of the rotary body 5 Ig, and the pressing member 63g is rotated by a resilient force of the compression coil spring s as shown in a broken line in FIG. 24 to be located at the pressing position.

[117] While exemplary embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes may be made to these embodiments without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents.

Claims

[1] A door lock device comprising: a housing installed at a door; a deadbolt straightly movably installed at the housing in a direction of projecting from and inserting into the housing to lock or unlock the door, and resiliently biased in a direction projecting from the housing; an intermediate member installed in the housing, and fixed to the deadbolt to be straightly moved with the deadbolt upon straight movement of the deadbolt; a rotary member rotatably coupled to the housing, having a pressing part for pressing the intermediate member such that the deadbolt moves in a direction of inserting into the housing upon rotation of the rotary member in one direction and a first guide slot formed through the rotary member, and resiliently biased to be rotated in a reverse direction of the one direction; a handle pin inserted into the guide slot to be relatively rotated with respect to the rotary member, and movable between the first position spaced apart from a rotation center axis of the rotary member and the second position disposed to be rotated to a certain distance around the rotation center axis by the rotation center axis from the first position; and a hooking member coupled to the rotary member to be rotated with the rotary member upon rotation of the rotary member, movable between the hooking position disposed on a rotation path of the handle pin and the hooking release position spaced apart from the rotation path of the handle pin, and pressed by the handle pin to be rotated with the handle pin at the hooking position upon rotation of the handle pin.

[2] The door lock device according to claim 1, further comprising; a pressing member installed at the housing to be moved between the pressing position for pressing the hooking member to dispose the hooking member on the rotation path of the handle pin and the pressing release position for releasing the pressing against the hooking member such that the hooking member is spaced apart from the rotation path of the handle pin; and a motor installed at the housing and driving the pressing member such that the pressing member can be moved between the pressing position and the pressing release position.

[3] The door lock device according to claim 2, wherein the handle pin is coupled to a handle rotatably coupled to an outdoor part of the door to be rotated depending on rotation of the handle, the hooking member is resiliently biased in a direction separated from the rotation path of the handle pin, a pinion is coupled to an output shaft of the motor, and the pressing member is elongated in a straight movement direction of the pressing member and has a rack meshed with the pinion.

[4] The door lock device according to claim 1, further comprising: a projection length adjustment member coupled to the housing to be moved between the adjustment position disposed on at least one straight movement path of the deadbolt and the intermediate member to adjust a length of the deadbolt projecting from the housing and at which the at least one of the deadbolt and the intermediate member is hooked, and the adjustment position spaced apart from a straight movement path of the deadbolt and the intermediate member.

[5] A door lock device comprising: a housing installed at a door; a deadbolt straightly movably installed at the housing in a direction of projecting from and inserting into the housing to lock or unlock the door, and resiliently biased in a direction projecting from the housing; an intermediate member installed in the housing, and fixed to the deadbolt to be straightly moved with the deadbolt upon straight movement of the deadbolt; a rotary member rotatably coupled to the housing, having a pressing part for pressing the intermediate member such that the deadbolt moves in a direction of inserting into the housing upon rotation of the rotary member in one direction, resiliently biased to be rotated in a reverse direction of the one direction, and having a drive projection; a pressing member installed at the housing to be straightly moved with respect to the housing, and having a first pressing projection and a second pressing projection disposed opposite to each other with the drive projection disposed therebetween; and a motor that is bi-directionally rotatable, and drives the pressing member such that the drive projection is pressed by the first pressing projection or the second pressing projection to rotate the rotary member.

[6] The door lock device according to claim 5, wherein a pinion is coupled to an output shaft of the motor, and the pressing member is elongated in a straight movement direction of the pressing member, and has a rack meshed with the pinion.

[7] The door lock device according to claim 1, further comprising: an anti-rotation member coupled to the housing to be located between the anti- rotation position at which the handle pin is hooked to prevent the handle pin from rotating from the first position to the second position and the free rotation position spaced apart from a rotation path of the handle pin such that the handle pin freely rotated from the first position to the second position.

[8] The door lock device according to claim 1, wherein the rotary member has a second guide slot formed through the rotary member and the door lock device further comprises: a rotary pin inserted into the second guide slot to be rotated around a rotation center axis of the rotary member by the rotation center axis, pressing an inner wall of the second guide slot to rotate the rotary member in the one direction upon rotation of the rotary body, and coupled to a handle rotatably coupled to an indoor part of the door to be rotated depending on rotation of the handle.

[9] The door lock device according to claim 1, further comprising: a rotary body rotatably coupled to the rotary member, and having a tooth-shaped part having a plurality of teeth formed at an outer periphery thereof; a pinion rotatably coupled to the housing, and meshed with the tooth-shaped part; a movable member straightly movably installed in the housing, elongated in a movement direction thereof, and having a rack part meshed with the pinion; and a pressing member installed at the housing to be rotated between the pressing position for pressing the hooking member to dispose the hooking member on a movement path of the handle pin and the pressing release position for releasing the pressing against the hooking member to separate the hooking member from the rotation path of the handle pin, and connected to the movable member to be moved between the pressing position and the pressing release position depending on movement of the movable member.

[10] The door lock device according to claim 1, further comprising: a pressing member installed at the housing to be moved between the pressing position for pressing the hooking member to dispose the hooking member on a movement path of the handle pin and the pressing release position for releasing the pressing against the hooking member to separate the hooking member from the rotation path of the handle pin; and a rotary body rotatably coupled to the rotary member, and pressing the pressing member such that the pressing member can be moved between the pressing position and the pressing release position during rotation of the rotary body.

[11] The door lock device according to claim 10, wherein the housing has a slot elongated in a straight movement direction of the pressing member, the pressing member has a sliding pin part inserted into the slot and slidable in a longitudinal direction of the slot, the housing is coupled to a stopper member formed of a resiliently deformable material, and having a first groove and a second groove spaced apart from each other in a straight movement direction of the pressing member, and when the pressing member is located at the pressing release position or the pressing position, the pressing member is inserted into the first groove or the second groove of the stopper member to be fixed thereto.

[12] The door lock device according to claim 10, wherein the pressing member comprises a pivot shaft, a first pressing part connected to the pivot shaft and pressing the hooking member at the pressing position, and a second pressing part connected to the pivot shaft and pressed by a push part of the rotary body at the pressing position to be resiliently deformed, and wherein the pressing member is resiliently biased to be rotated to the pressing release position when the pressing member is located at the pressing position.

[13] The door lock device according to claim 10, wherein the pressing member comprises a pivot shaft, a first pressing part connected to the pivot shaft and pressing the hooking member at the pressing position to be resiliently deformed, and a second pressing part connected to the pivot shaft and pressed by a push part of the rotary body at the pressing position.

[14] The door lock device according to claim 10, wherein the rotary member is concentrically disposed to the rotary body, the handle pin is coupled to a handle rotatably coupled to an outdoor part of the door to be rotated depending on rotation of the handle, the hooking member is resiliently biased to be spaced apart from a rotation path of the handle pin, the rotary member has a second guide slot formed through the rotary member, a rotary pin is inserted into the second guide slot to be rotated around the rotation center axis of the rotary member by the rotation center axis and presses an inner wall of the second guide slot to rotate the rotary member in the one direction during rotation of the rotary pin, and the rotary pin is coupled to a handle rotatably coupled to an indoor part of the door to be rotated depending on rotation of the handle.

[15] The door lock device according to claim 2 or 10, wherein the hooking member has a rotary part rotatably coupled to the rotary member and spaced apart from the rotary member in a thickness direction of the door, and a projection formed at the rotary part to project in the thickness direction of the door, the pressing member has an arc-shaped contact surface in contact with the projection of the hooking member when the pressing member is located at the pressing position, a center of curvature of the contact surface is located at the rotation center axis of the rotary member when the pressing member is located at the pressing position, and when the handle pin is rotated in a state that the pressing member is located at the pressing position, the projection of the hooking member is in contact with the contact surface of the pressing member to be relatively slid.

[16] A door lock device comprising; a housing installed at a door; a deadbolt straightly movably installed at the housing in a direction of projecting from and inserting into the housing to lock or unlock the door, and resiliently biased in a direction projecting from the housing; an intermediate member installed in the housing, and fixed to the deadbolt to be straightly moved with the deadbolt upon straight movement of the deadbolt; a rotary member rotatably coupled to the housing, having a pressing part for pressing the intermediate member such that the deadbolt moves in a direction of inserting into the housing upon rotation of the rotary member in one direction and a first guide slot formed through the rotary member, and resiliently biased to be rotated in a reverse direction of the one direction; a rotary drive member disposed in the housing to be spaced apart from the rotary member, rotatably coupled to the housing, connected to the deadbolt such that the deadbolt moves in a direction inserting into the housing during rotation of the rotary member, and having a push part; an intermediate movement member coupled to the intermediate member to be moved with the intermediate member, and movable between the pressing position disposed on a rotation path of the push part to be pressed by the push part so that the deadbolt moves in a direction inserting into the housing during rotation of the rotary drive member and the pressing release position spaced apart from the rotation path of the push part; and a resilient member for resiliently biasing the rotary drive member such that the rotary drive member is rotated in a direction of releasing the pressing by the push part of the intermediate movement member.

[17] The door lock device according to claim 16, further comprising: a motor installed in the housing to be rotated clockwise and counterclockwise; and a drive member coupled to an output shaft of the motor and pressing the intermediate movement member to locate the intermediate movement member at the pressing position upon drving of the motor.

[18] The door lock device according to claim 16, wherein the rotary member has a second guide slot formed through the rotary member and the rotary drive member has a first guide slot formed through the rotary drive member, and the door lock device further comprises: a rotary pin inserted into the second guide slot, rotatable around a rotation center axis of the rotary member by the rotation center axis, and pressing an inner wall of the second guide slot to move the deadbolt in the inserting direction during rotation of the rotary member; and a handle pin inserted into the first guide slot, rotatable around a rotation center axis of the rotary drive member by the rotation center axis, and pressing an inner wall of the first guide slot during rotation thereof to rotate the rotary drive member.

[19] The door lock device according to claim 18, wherein the rotary member is concentrically coupled to the rotary drive member, the rotary drive member has a second guide slot formed through the rotary drive member, concentrically disposed to the second guide slot of the rotary member and into which the rotary pin is inserted, such that the inner walls of the second guide slot of the rotary member and the second guide slot of the rotary drive member are pressed to rotate the rotary member and the rotary drive member during rotation of the rotary pin, the rotary member has a first guide slot formed through the rotary drive member such that the handle pin is inserted into the first guide slot, and the first guide slot is configured such that the inner wall of the first guide slot of the rotary member is not pressed by the handle pin when the handle pin is rotated.

[20] The door lock device according to any one of claims 1, 10 and 16, wherein the rotary member has a hooking part disposed on a movement path of the deadbolt and hooking the deadbolt to prevent the door from being unlocked by movement of the deadbolt in the inserting direction in a locked state of the door.