KR20110135078A - Hook type doorlock - Google Patents

Abstract

PURPOSE: A hook type door lock is provided to prevent the release of a deadbolt operating lever in a locked state even if a large external impact is applied to a door lock. CONSTITUTION: A hook type door lock is configured as follows. A support shaft(33) fixed to a case(35) is provided on the upper side of the moving path of a deadbolt(3) inside a mortise case. The top of a U-shaped hook(27) is coupled to the support shaft so that the hook is hung on the support shaft. The deadbolt head is formed with a propulsion pocket(9) which accommodates the hook in a release position and pushes the hook from the backside so that the bottom of the hook protrudes upward in a locking operation.

Description

Hook type door lock {HOOK TYPE DOORLOCK}

The present invention relates to a hook-type door lock, and more particularly, to a door lock comprising a mortis attached to a door and a striker attached to a door frame, the hook having a mortis provided when a dead bolt enters the striker. By hooking the wall of the striker, it relates to a hook-type door lock that prevents abnormal release or illegal release of the dead bolt.

Recently, the installation of digital door locks on the doors of apartment fire doors is becoming more common. The digital door lock has dead bolts and latch bolts in the case embedded in the door, and the striker installed in the door frame and the mortis functioning to lock and unlock, and the dead bolt actuating lever or latch bolt actuating lever on the inside of the door and are dead. Keypad for number keys, coupled to an internal module equipped with an electric motor for bolt driving, a power transmission device, a controller, an electric motor switch, a manual handle for dead bolt driving, an internal latch handle, and a latch bolt operating lever of Mortis at the outer side of the door It consists of an external module with an RFID antenna for a wireless contact key and an external latch handle. The door lock by the dead bolt is made when the dead bolt in the mortis enters the striker inserted into the door frame by the rotation of the electric motor embedded in the internal module, and the door by the dead bolt is released by the opposite rotation of the electric motor. When the dead bolt is completely out of the striker. The latch bolt is always locked to the elasticity of the latch spring provided in the mortis case in a normal state where the user does not turn the latch handle. When the inner latch handle or the outer latch handle is turned, the latch bolt is temporarily released. It returns to the locked state by the restoring force of the latch spring again.

Recently, a problem that is mainly recognized as a technical problem to be solved in the digital door lock industry is an illegal unlocking problem and a simultaneous release of the latch bolt and the dead bolt by the inner latch handle.

Illegal releases are inserted between the fire door and the door frame to open the gap, and by using a mechanism called a presser foot puller, the dead bolt coupled to the striker of the door frame is pushed to the mortis side to release the door lock, or the dead bolt operating lever in the mortis from the outside The door lock is released by giving a strong shock enough to be released in the locked state.

In general, the forward and backward deadbolt in the mortis is made by a rotary actuating lever that rotates by driving an electric motor or a manual handle. Advances the dead bolt by inserting the tip of the lever of the operating lever into the clearance hole, and forming a multi-cavity cavity formed with a continuous inclined surface and a stopping jaw extending downwards to the left and right of the center groove proceeding upward to the dead bolt tail. Or backwards. Since the lower stepped surface forms a discontinuous surface with the center of the clearance hole, when the locking or unlocking operation, the operating lever must be turned with a certain level or more to maintain the stop state by interviewing the lower end surface of the clearance hole. If the door lock is locked and no more than a certain level of rotational force is applied, the operating lever does not rotate and is not released.However, when a large impact is applied to the mortis, the end surface of the operating lever is released from the lower step surface of the play hole and rotates. This unlocks the door lock. If the operating lever is in the locked state. This is because the rotational restraint force other than the force applied to the downward stepped surface does not act.

Although some inventions have been disclosed to solve the illegal unlocking problem using the presser foot peg of the door lock, the invention which solves the problem of illegally unlocking the door lock is hardly disclosed.

Invention for solving the illegal release problem by the presser foot puller of the door lock includes the invention of Korea Patent Publication No. 10-648574, Korea Patent Publication No. 20-2009-0009954. The door locks disclosed in these inventions provide hooks rotatably around a rotating shaft fixed to the dead bolts in the dead bolts, and when the dead bolts advance to enter the striker, the hooks are guide slits (Korean Utility Model Publication No. 20). In the case of -2009-0009954) or a projection (Korean Patent Publication No. 10-648574) has a hook-like structure to be caught on the wall of the striker. In this case, the hooks used must exhibit sufficient rigidity, so first make thin hooks made of steel plate such as stainless steel, and then use them by stacking them.In this case, the hooks are heavier in weight than dead bolts. .

Conventional hook-type door locks, in which such hooks are charged in deadbolts and move linearly with the deadbolts, rotate by a rotating mechanism within the deadbolts when they enter the striker, and are distanced to the wall of the striker, in particular by means of an electric motor. When applied to a driving digital door lock has the following disadvantages. First of all, when the hook is loaded in the dead bolt and moves with the dead bolt, the total dead bolt becomes heavy, which increases the load on the electric motor, which increases the power consumption of the door lock that uses the battery as a power source, and thus does not attach the hook. Compared to this, there is a drawback of significantly shortening the battery replacement cycle. In particular, for doors with frequent entrance and exit, such as apartment fire doors, power consumption and battery replacement cycles vary considerably depending on whether the dead bolts are moved by adding the weight of the hook. Next, when the hook is integrated with the dead bolt and moves together, and the dead bolt includes all the rotating mechanisms of the dead bolt, there is a disadvantage in that the durability of the door lock is poor. It must rotate the hook as the dead bolt enters the striker, which complicates the rotation mechanism of the hook when the hook is integral with the dead bolt and moves forward or back together, resulting in damage to the door lock component or striker. It is easy to do. Looking specifically at this, as in the Korean Utility Model Publication No. 20-2009-0009954, the end of the hook to form a guide slit bent upwards, so that the guide slit is coupled to the guide pin of the dead bolt When the dead bolt enters the striker, the hook is rotated about the axis of rotation of the hook by the bent guide slit, and the impact is repeated on the guide bolt of the dead bolt every time the door passes through the door, and the impact accumulates. When the guide pin is bent, the shape of the guide slit is also modified to shorten the life of the door lock. As in Korean Patent Application Publication No. 10-648574, a protrusion is formed at the rear end of the hook, and when the dead bolt enters the striker, the hook of the hook hangs on the upper wall of the dead bolt groove of the striker, In the case of rotating around the axis of rotation, the impact is repeated in the dead bolt groove upper outer wall of the striker and the hook period of the hook every time the door enters and exits, and when such impact accumulates, the dead bolt groove upper wall of the striker is scratched or Distortion occurs. In addition, the repetitive impact acts on the rotating shaft of the hook and the rotating shaft is easily broken. Therefore, when used for a long time, the appearance of the striker is damaged, and the hook is not smoothly rotated.

Another technical problem recognized as a problem to be solved in the digital door lock is a problem of releasing not only the latch bolt but also the dead bolt when the door is opened by turning the inner latch handle. In general, the inner and outer latch handles of the digital door lock are used for latch bolt release, and the dead bolt release has used a separate release means (electric motor switch or separate manual handle) separate from the latch handle. Therefore, when going out from the room, first, the dead bolt was released by using an electric motor switch or a manual handle, and then the inner latch handle was turned again. However, in an emergency situation such as an indoor fire, the operation of the electric motor or the controller may fail, and even in normal operation, the dead bolt may not be released in the emergency situation after the dead bolt is released and the latch bolt may not be released. Therefore, the door lock such as the front door is required to release the dead bolt as well as the latch bolt at the time of opening the door by turning the inner latch handle.

When the door is opened by turning the inner latch handle, the mortise structure in which not only the latch bolt but also the dead bolt are released together is registered in Korea Patent Registration No. 10-763884, Korea Patent Registration No. 10-763885, etc. Publication No. 10-751952 and the like.

Korean Patent Application Publication No. 10-763884, Korean Patent Publication No. 10-763885 The invention is a dead bolt and latch bolt interlocking problem to eliminate the dead bolt, the outer latch handle and the latch bolt is provided with a clutch The inner latch handle and the latch bolt are directly connected so that when the door is opened from the outside, the clutch is opened only when the clutch is closed, and when the door is opened from the inside, the door is opened by simply turning the latch handle. However, this structure is more complicated in structure as the dead bolt is eliminated, but the clutch device between the outer latch handle and the latch bolt is further added, and in particular, the latch handle is more easily compared to the dead bolt by the above-mentioned illegal unlocking methods. Since it can be solved, there is a weak point in security.

Korean Patent No. 10-751952 is a cam that is fixedly installed on the central axis of rotation of the inner handle, a push plate pressed by the cam to move from the ready position to the press position, and the push plate is moved from the ready position to the press position And a first interlocking means having a slider that is pushed from the original position to the pressed position, and the first interlocking means for interlocking the latch bolt from the latched position to the released position as the slider moves from the original position to the pressed position. Disclosed is a dead bolt and latch bolt operating device having a second interlocking means for interlocking the dead bolt from the locked position to the released position as it moves from the position to the press position. The first interlocking means includes a push lever installed on the mortis so as to move the latch bolt from the latching position to the release position while being pressed and rotated by the slider moving from the original position to the pressed position. The first gear is installed on the inner body so as to be rotated to the first operating position and the second operating position while being pressed by the push plate moving from the ready position to the pressing position, so as to be engaged with the first gear. And a second gear fixed to the circumference of the shaft and moving the operating lever from the first position to the second position as the first gear rotates from the first operating position to the second operating position. The invention of Korea Patent No. 10-751952 is different from the above Patent Registration No. 10-763884, and Patent Registration No. 10-763885 of the invention, leaving the dead bolt intact, while the cam on the center of rotation of the inner handle And a push plate that moves up and down on the cam according to the rotation of the inner handle, so that when the inner handle is turned, the push plate is raised to raise the slider and rotate the first gear. Rotating the latch bolt push lever to release the latch bolt, the first gear is to rotate the second gear connected to the dead bolt operating lever to enable the operating lever to release the dead bolt. However, according to the invention of Korean Patent No. 10-751952 having such a structure, the inner handle, the push plate, the slider, the push lever, the second gear, and the first gear, which are formed separately from each other, are rotated by cam rotation. By repeating the ascending and descending while interlocking, the operating force of the inner handle may not be partially transmitted, and thus the latch bolt and the dead bolt may not be opened at the same time.

The present invention has been made to solve the problems of the conventional hook-type door lock as described above, the first problem to be solved by the present invention is to increase the weight of the dead bolt or to complicate the structure of the dead bolt, The purpose is to provide a hook-type door lock that secures the deadbolt to the striker to prevent illegal release.

The second problem to be solved by the present invention is to provide a hook-type door lock that does not affect the load of the electric motor, the power consumption of the battery, and the durability of the door lock even with the addition of a hook.

The third problem to be solved by the present invention is that the rotational force applied to the indoor latch handle is accurately transmitted simultaneously to the latch bolt and the dead bolt when the indoor latch handle is turned, so that the latch bolt and the dead bolt are rotated every time the indoor latch handle is turned. It is to provide a hook-type door lock that can be unlocked at the same time without failure.

The fourth problem to be solved by the present invention is to provide a hook-type door lock that does not easily leave the dead bolt operating lever in the locked state, even if a large impact on the door lock from the outside of the door.

The first object and the second object of the present invention described above are provided in the mortise case inserted into the door by a latch bolt which is released by an inner latch handle and an outer latch handle, and a dead bolt operating lever driven by an electric motor. In the door lock having a dead bolt that locks and unlocks, a support shaft fixed to the case is provided at a predetermined point above the dead bolt moving path inside the mortis case, and the support shaft is rotatably coupled to the upper end of the U-shaped hook. The hook is suspended downwardly around the support shaft, and the head of the dead bolt accommodates the hook therein at the unlocked position. Then, the lower part of the hook pushes the hook from the rear of the support shaft by the inner wall during the locking process. This is solved by forming a propulsion pocket for pivoting upward.

The third task of the present invention described above is coupled to the rotation shaft of the inner latch handle in the mortis case, and rotates the latch bolt operating lever in a direction in which the latch bolt is released by interfering with the latch bolt operating lever during unlocking of the inner latch handle. An inner latch handle interlocking lever having an arm formed therein, a clutching lever which is coupled to the inner latch handle interlocking lever, rotates with the inner latch handle, and has an arm protruding outward from the lower end, and protrudes outside the cylindrical rotor and the rotating body. It consists of a semi-circular arm coupled to the dead bolt operating lever, and the inner circumferential surface of the rotating body is formed with a guide groove into which the arm of the clutching lever is inserted and a jaw continuous to the guide groove to rotate the inner latch handle in the latch bolt release direction. The arm of the clutching lever pushes the jaw of the rotating body to rotate together with the clutching lever When the electric motor rotates and the dead bolt operating lever rotates in the dead bolt unlocking direction, the guide groove of the rotating body idles outside the arm of the clutching lever, so that the transmission of the rotational force with the clutching lever boils the dead bolt auxiliary lever. It is achieved by further providing.

The fourth object of the present invention described above is to form two grooves on the lower surface of the rotating body of the dead bolt auxiliary lever, and to provide a plate spring formed with a projection that can be elastically coupled to the lower groove, the dead bolt This is achieved by allowing the projection of the leaf spring to engage each groove of the dead bolt auxiliary lever at the time of locking and unlocking the dead bolt.

According to the present invention having the above-described configuration, since the hook is not mounted in the dead bolt and is suspended in the support shaft fixed to the case, without increasing the weight of the dead bolt or complicating the structure of the dead bolt, When locking, dead bolts can be reliably caught by the striker to prevent illegal unlocking.As a hook is added, it does not affect the load of the electric motor, the power consumption of the battery and the durability of the door lock. When turning the latch handle, the rotational force is transmitted directly to the inner latch handle interlock lever and the dead bolt auxiliary lever at the same time, and the latch bolt and the dead bolt are released at the same time by operating the lever, so the simultaneous release of the latch bolt and the dead bolt is always reliable. The lock spring is provided at the lower part of the dead bolt auxiliary lever. Since it is maintained, even if a large impact is applied to the door lock from the outside of the door, there is an effect that the dead bolt operating lever is not easily released from the locked state.

Figure 1a to 1c, when the outside of the hook-type door lock according to the present invention releases the dead bolt by the number key or the like and releases the latch bolt by turning the outer latch handle to open the door, when entering the interior when closing the door This is an operational state diagram showing a process of dead bolt being determined by an electric motor connected to the dead bolt operating lever.
2A to 2C are diagrams illustrating an operation state in which a latch bolt and a dead bolt are released at the same time when the door is opened and opened by turning the inner latch handle inside the door in which the hook-type door lock is installed according to the present invention.
Figure 3a is an exploded perspective view showing the inner latch handle, the outer latch handle of the hook-type door lock according to the present invention, the various levers and dead bolts interlocked to these handles.
Figure 3a is a partially exploded perspective view showing the inner latch handle, the outer latch handle of the hook-type door lock according to the present invention, the various levers and dead bolt assembly in conjunction with these handles separated from each other.

Hereinafter, with reference to the accompanying drawings will be described in detail a specific embodiment of the hook-type door lock according to the present invention.

FIG. 1A shows a front sectional view of a mortise 1 inserted into a door and a striker 23 inserted into a door frame.

The striker 23 is formed with a bolt groove 24 to allow the dead bolt 3 and the latch bolt 37 to enter and exit the striker 23 from the mortise (1). In the upper portion of the bolt groove 24 of the striker 23 is formed a front wall 25 through which the hook 27 is rotated so that the lower end 29 thereof can be caught.

As shown in FIGS. 1A and 3A, the mortise 1 includes various locking and unlocking parts in a rectangular metal barrel shaped mortise case 35. These parts include a dead bolt (3) having no automatic return function after unlocking, a latch bolt (37) automatically returning to the locked state by the return spring (47) after unlocking, and an electric motor (inside that is normally attached to the inside of the door). A dead bolt operating lever 91 driven by the module), and a latch bolt operating lever 49 driven by the inner latch handle 51 or the outer latch handle 55.

The dead bolt (3) is composed of a head (4) of the leading end, the body (5) in the middle and the tail (7) of the rear end. The head 4 of the dead bolt (3) is a portion entering and exiting the striker (23). The body 5 is formed with a guide hole 21 in the form of a long hole parallel to the direction of the dead bolt (3), and is slidably coupled to the guide pin 19 fixed to the case 35 dead bolt (3) To guide the linear motion of The tail 7 is formed with a polygonal cavity 13 through which the arm 95 (see FIG. 3A) of the dead bolt actuating lever 91 flows, and the wall surface of the polygonal cavity 13 is a dead bolt actuating lever 91. ) Is converted into the linear motion of the dead bolt (3). The center of the polygonal cavity 13 is a rectangular cavity, and discontinuous inclined surfaces 15a and 15b and stop jaws 17a and 17b are formed on both sides thereof so that the arm 95 of the dead bolt operating lever 91 is formed therein. When rotating in both directions in the polygonal cavity 13, the side of the arm 95 pushes the side wall of the central rectangular cavity to advance or reverse the dead bolt, and the front end surface of the arm 95 is inclined at both sides 15a, When the side surface of the arm 95 is caught by the stop jaw 17a, 17b while contacting 15b), the dead bolt stops. The driving force of the electric motor is transmitted to the rotating body 93 (see FIG. 3A) of the dead bolt operating lever 91.

The latch bolt 37 is composed of an integrated head 39 and the body 41. The head 39 of the latch bolt 37 is a part entering and exiting the striker 23. The body 41 is formed with a guide hole 43 parallel to the direction of the dead bolt, is coupled to the guide pin 45 fixed to the case so as to guide the linear movement of the latch bolt (37). The arm 41 of the rotary latch bolt operating lever 49 is coupled to the body 41 of the latch bolt 37 so that the rotational movement of the latch bolt operating lever 49 when the latch bolt operating lever 49 rotates is a straight line of the latch bolt 37. Convert it to exercise. 2b and 3a, two arms 50a and 50b are formed in a radial direction around a rotation axis of the latch bolt operating lever 49 at a predetermined angle. One arm 50a of the two arms 50a, 50b is coupled to the body 41 of the latch bolt 37, and the other arm 50b is the arm 65 of the inner latch handle interlock lever 59. Or the rotational force is transmitted while contacting the arm 73 of the outer latch handle interlock lever 59.

2b or 3a, when the user turns the inner latch handle 51 or the outer latch handle 55 in the release direction, the inner latch handle interlocking lever 59 or the outer latch coupled to these handles is released. The handle interlocking lever 69 pushes the arm 50b of the latching bolt operating lever 49 by its arms 65 and 73 to engage the latching bolt engaged with the other arm 50a of the latching bolt operating lever 49. Retract 37). When the user releases the inner latch handle 51 or the outer latch handle 55, these handles 51 are acted upon by the action of return springs (not shown in the drawing) coupled to the handles 51 and 55 in the mortis case 35. ) Will automatically return to the position before the user turns. In addition, when the user releases the inner latch handle 51 or the outer latch handle 55, the force acting on the arm 50b of the latch bolt operating lever 49 also disappears, so the latch bolt 37 also has a return spring ( Return to the locked position. Therefore, the retraction of the latch bolt 37 always occurs only temporarily.

As can be seen with reference to Figure 1a, one of the features of the present invention is to provide a support shaft 33 fixed to the case 35 at a certain point above the moving path of the dead bolt (3) inside the mortise case (35) In addition, the upper end 31 of the U-shaped hook 27 is rotatably coupled to the support shaft 33 so that the hook 27 is suspended downwardly around the support shaft 33, and the dead bolt 3 is fixed. The hook (4) is accommodated inside the head (4) in the unlocked position of the support bolt (31) by the inner wall (11) when the dead bolt (3) proceeds to the lock position Push back from the center to form a propelling pocket (9) for the hook bottom portion 29 to rotate upwardly projecting. As shown in Figure 1c, the body of the hook 27 in the locked position should not be completely out of the propulsion pocket (9) to prevent the forced release of the dead bolt 27 by the tool, such as a presser foot nail, so that the propulsion pocket ( The position of the inner wall 11 of the 9 and the position of the support shaft 33, even if the inner wall 11 of the propelled pocket 9 pushes the hook 27 in the locked position, the body of the hook 27 is the propelled pocket ( Adjust so that it does not completely deviate from 9). In addition, the upper surface of the inner wall 11 of the propulsion pocket (9) forms an inclined surface extending upward. The hook may be further installed at the bottom as well as at the top of the dead bolt. At this time, the hooks installed on the upper and lower dead bolts are installed to be symmetric with respect to the horizontal direction.

As shown in Figure 3a or 3b, the hook 27 is heavy and bulky by using a plurality of overlapping thin hooks made of steel plate such as stainless steel to exhibit sufficient rigidity, but according to the present invention, dead Not only does not increase the overall weight of the bolt (3) or complicated the structure of the dead bolt, but also add a heavy hook (27) to the mortis (1), the load of the electric motor and the power consumption of the battery increases, The durability of the door lock does not degrade.

As can be seen with reference to Figures 3a and 3b, another feature of the present invention is the simultaneous release of the latch bolt 37 and the dead bolt (3) by the inner latch handle 51 of the inner latch handle (51) It is realized only by rotary levers 59, 75, 85 continuously coupled to the rotary shaft 53. In this case, the rotational force of the inner latch handle is firmly and reliably transmitted to the latch bolt bolt operating lever 49 or the dead bolt operating lever 91, and the simultaneous release of the latch bolt 37 and the dead bolt 3 fails. Is done without.

To this end, as shown in Figures 3a and 3b, the present invention is coupled to the rotary shaft 53 of the inner latch handle 51, the mortise case 35, when unlocking the inner latch handle 51 It has an inner latch handle interlock lever 59 formed with an arm 65 for interfering with the latch bolt operating lever 49 to rotate the latch bolt operating lever 49 in the direction in which the latch bolt 37 is released. In addition, the present invention is coupled by the inner latch handle interlocking lever 59 and the keys (79a, 79b) in the mortis case 35, rotates together with the inner latch handle 51 and the lower end protrudes outward A clutching lever 75 having arms 77a and 77b formed therein, and a cylindrical rotating body 87 into which the clutching lever 75 is inserted, and protruding outside the rotating body 87 to form the dead bolt operating lever ( And a dead bolt auxiliary lever (85) formed of a semi-circular arm (86) to which the tip and the tip are coupled. The inner latch handle interlocking lever 59, the clutching lever 75, and the dev bolt auxiliary lever 85, which are integrally assembled with each other, all have a rotational body 63, 81, and 87 having the same center line as the inner latch handle. The center line of these rotors (63, 81, 87) coincides with the center line of the axis of rotation (53) of the inner latch handle (51). Therefore, when the user rotates the inner latch handle 51, the rotational force thereof remains the inner latch handle interlocking lever 59, the clutching lever 75, the dev bolt auxiliary lever 85, and the dead bolt operating lever 91. Is passed on. Therefore, when the indoor latch handle 51 is rotated, the rotational force applied to the indoor latch handle 51 is accurately and simultaneously transmitted to the latch bolt 37 and the dead bolt 3 without loss of rotation force or error.

Guide grooves 89a into which the arms 77a and 77b of the clutching lever 75 are inserted along the circumferential direction on the inner circumferential surface of the rotating body 87 of the dev bolt auxiliary lever 85 assembled with the clutching lever 75. , 89b and jaws 90a and 90b which are continuous to the guide grooves 89a and 89b are formed. Widths of the arms 77a and 77b and the jaws 90 of the clutching lever 75, widths of the guide grooves 89a and 89b, and guide grooves 89a and 89b of the arms of the clutching lever 75. The engagement position with respect to) is that when the inner latch handle 51 rotates in the latch bolt release direction, the arms 77a and 77b of the clutching lever 75 are rotated by the dead bolt auxiliary lever 85. Pushing the jaws 90a and 90b formed in the 87, the rotating body 87 of the dead bolt auxiliary lever 85 rotates with the clutching lever 75, the electric motor rotates to the dead bolt operating lever 91 Is rotated in the dead bolt (3) release direction, the outer side of the arms (77a, 77b) of the clutching lever 75, the guide grooves (89a, 89b) of the rotating body 87 of the dead bolt auxiliary lever 85 is stopped At this time, the rotational force of the dead bolt subsidiary lever 85 guide grooves 89a and 89b is greater than the width of the clutching lever arms 77a and 77b. The width is more than doubled, and the clutching lever arms 77a and 77b and the dead bolt operating lever 91 are assembled with the clutching lever arms 77a and 77b and the guide grooves 89a and 89b assembled. The space angle between the jaws 90b is made larger in the counterclockwise direction than the rotation angle of the dead bolt auxiliary lever 85 by the electric motor, and in the clockwise direction than the rotation angle for the release of the inner latch handle 51. In this way, the rotational force of the inner latch handle 51 is transmitted to the dead bolt operating lever 91 as it is, but the rotational force of the electric motor driving the dead bolt operating lever 91 is transmitted to the inner latch handle 51. Not delivered.

As shown in FIGS. 3A and 3B, between the inner latch handle interlock lever 59 and the clutching lever 75, an outer latch handle interlock lever 69 idling with these levers 59 is provided. . The outer latch handle interlock lever 69 is coupled to the rotation shaft 57 of the outer latch handle 55 so that when the user turns the outer latch handle 55, the arm 73 of the outer latch handle interlock lever 69 is latched. The operating lever 49 is rotated in the release direction.

Another feature of the present invention, as shown in Figure 1c, in the state that the dead bolt 3 is locked, the dead bolt auxiliary lever so that the dead bolt operating lever 91 does not escape from the locked position even in the external impact The lever 85 is to hold the dead bolt operating lever 91. To this end, as shown in FIGS. 1A and 1C, two recesses 97a and 97b are formed on the lower surface of the rotating body 87 of the dead bolt auxiliary lever 85, and the lower portion of the rotating body 87 is provided. By providing a leaf spring 99 formed with a projection 101 that can be elastically coupled to the grooves (97a, 97b), the projection 101 of the leaf spring 99 when the dead bolt is locked and the dead bolt is released To be coupled to the grooves (97a, 97b) of the dead bolt auxiliary lever (85). By this structure, even if a large impact is applied to the door lock from the outside of the door, the dead bolt operating lever does not easily escape from the locked position.

The head of the dead bolt 4 is press-processed using a stainless steel plate, and the dead bolt body 5 and the tail 7 are die casted with zinc, and when assembled by riveting, the strength of the dead bolt can be increased.

Hereinafter, referring to FIGS. 1A to 1C, the user releases the dead bolt 3 using the number key or the like outdoors, and releases the latch bolt 37 by turning the outer latch bolt handle 55. The process of re-locking the dead bolt (3) when entering the room with the outer latch bolt handle 55 is opened to open.

As shown in FIG. 1A, when the user releases the dead bolt 3 by the number key or the like outdoors, the dead bolt auxiliary lever 85 also rotates in the release direction, but as described above, the dead bolt auxiliary lever ( The inner latch handle 51 does not move because the guide grooves 89a and 89b of the 85 are idling about the clutching lever 75. In the unlocked state of the dead bolt 3, the hook 27 is suspended in the propulsion pocket 9 of the dead bolt head 4 by hanging on the support shaft 33 by its own weight. In addition, the latch bolt 37 returns to the locked state as soon as the user opens the door and releases the outer latch bolt handle 55. The inner surface of the head 39 of the latch bolt 37 is rounded or inclined so that the door is pushed back to the return spring 47 when the door is closed even when the outer latch bolt handle 55 is placed before the door is closed. It does not interfere with closing.

As shown in FIG. 1B, when the user enters the room and closes the door, the controller detects the closing of the door to drive the electric motor, and the dead bolt operating lever 91 rotates in the locking direction by the driving force of the electric motor to dead. The bolt 1 advances to the striker 23 side. In this process, the inner wall 11 of the propulsion pocket 9 rotates about the support shaft 33 by pushing the hook 27.

In the present invention, since the hook 27 is not installed inside the dead bolt, but is suspended by the support shaft on the mortis case, as shown in FIG. 1B, since the dead bolt starts to enter the striker 23 installed in the door frame, As the hook strikes the dead bolt inner wall 11, the rotation naturally occurs about the support shaft 33, and the dead bolt fully enters the striker 23, and at the same time, the lower end 29 of the hook 27 is the dead bolt head. (4) protrudes out.

As shown in FIG. 1C, when the locking of the dead bolt is completed, the lower end of the hook 27 rotates to be positioned immediately behind the front wall 25 of the striker 23, and the body of the hook 27 is a dead bolt. The propulsion pocket (9) of the will not go out. Therefore, when the dead bolt 3 is illegally released, the reverse of the dev bolt 3 is prevented by the hook 27, and even if a strong force is applied to the longitudinal or transverse direction of the dead bolt from the outside of the mortise 1 Is not freed easily.

In addition, the leaf spring 99 provided below the dead bolt auxiliary lever 85 is elastically coupled to the dead bolt auxiliary lever 85 to hold the dead bolt operating lever 91 so as not to be released by the impact, so that the illegal release by the impact This is avoided.

Hereinafter, referring to FIGS. 2A to 2C, when the user who is in the room goes out, a process of opening the door by simultaneously unlocking the latch bolt 37 and the dead bolt 3 by turning the inner latch bolt handle 51 is performed. Explain.

2A shows the state of the mortise 1 and the striker 23 when the door is locked. Here, the hook 27 is protruded by the dead bolt 3 operation and is firmly supported by the dead bolt inner wall 11 upper inclined surface, so the hook 27 continues to protrude.

As shown in FIG. 2B, when the inner latch handle 51 is rotated therein, the inner latch handle interlocking lever 59, the clutching lever 75, and the dead bolt auxiliary lever 85 are connected to the inner latch handle 51. By rotating together, the latch bolt operating lever 49 and the dead bolt operating lever 91 are simultaneously turned in the unlocking direction. At this time, the dead bolt (3) retracts the dead bolt inner wall (11) supporting the hook (27) from the hook 27 due to the force of gravity due to the hook 27 is centered on the support shaft (33) It starts to enter the propulsion pocket 9 in the dead bolt 3 while rotating.

2C shows a state in which the inner latch handle 51 is completely turned in the unlocking direction, the retreat of the dead bolt is completed, and the hook 27 is suspended in the support shaft 33 and accommodated in the propulsion pocket of the dead bolt head 4. Indicates. At this time, the latch bolt 37 is also retracted by the rotation of the inner latch handle 51 to maintain the unlocked state.

1: Mortis 3: Dead Bolt
4: head 5: body
7: tail 9: propulsion pocket
11: inner wall 13: polygonal cavity
15a, 15b: slope 17a, 17b: stop jaw
19: guide pin 21: guide ball
23: striker 24: bolt groove
25: front wall 27: hook
29: lower part 31: upper part
33: support shaft 35: case
37: Latch Bolt 39: Head
41: body 43: guide ball
45: guide pin 49: latch bolt operating lever
50a, 50b: arm 51: inner latch handle
53: rotation axis 55: outer latch handle
57: axis of rotation 59: inner latch handle interlocking lever
61: key groove 63: the rotating body
65: arm 67a, 67b: keyway
69: external latch handle interlocking lever 71: shaft work
73: arm 75: clutching lever
77a, 77b: arm 79a, 79b: key
81: rotating body 83: shaft hole
85: dead bolt auxiliary lever 87: rotating body
89a, 89b: Groove 91: Dead bolt operating lever
93: rotating body 95: arm

Claims (3)

A door lock comprising a latch bolt unlocked by an inner latch handle and an outer latch handle, and a dead bolt locked and unlocked by a dead bolt operating lever driven by an electric motor.
The mortise case inside the dead bolt moving path to provide a support shaft fixed to the case at a predetermined point, the support shaft is rotatably coupled to the upper end of the U-shaped hook to hang the hook downwards around the support shaft, the dead bolt The hook of the head is accommodated therein in the disengaged position, and by pushing the hook from the rear centering around the support shaft by the inner wall during the locking process to form a propelling pocket to rotate the hook bottom portion upward upward Hook-type door lock.
The method of claim 1,
In the mortis case,
An inner latch handle interlocking lever having an arm coupled to the rotational shaft of the inner latch handle and interfering with the latch bolt actuating lever during rotation of the inner latch handle for unlocking to rotate the latch bolt actuating lever in a direction in which the latch bolt is released; A clutching lever coupled to the handle interlock lever by a key to rotate together with the inner latch handle and an arm protruding outward from the bottom thereof, and a semicircular arm projecting to the outside of the cylindrical rotor and the rotor and coupled to the dead bolt operating lever. And a guide groove into which the arm of the clutching lever is inserted and a jaw continuous to the guide groove are formed on the inner circumferential surface of the rotating body so that the arm of the clutching lever rotates in the latch bolt release direction. The chin of the swivel to rotate with the clutching lever and the electric motor rotates to The hook-type door lock further comprises a dead bolt auxiliary lever that rotates in the debolt disengaging direction so that the guide groove of the rotating body rotates idlely outside the arm of the clutching lever to transmit the rotational force to the clutching lever. .
The method of claim 2,
Two grooves are formed on the lower surface of the rotating body of the dead bolt auxiliary lever, and a plate spring having protrusions that can be elastically coupled to the groove is provided on the lower part of the rotating body so that the dead bolt is locked and the dead bolt is released. Hook type door lock, characterized in that the projection of the spring is coupled to the groove of the dead bolt auxiliary lever.

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