KR200352214Y1 - Locking structure of a door-lock - Google Patents

Abstract

The present invention prevents the unlocking by the rotation of the outer handle 50 without damaging the latch 70 even if the force is applied to the outer handle 50 when the locked state is set, the locked state The locking structure of the door lock 1 which enables the rotation of the outer handle 50 when it is released.

The locking structure of the door lock 1 according to the present invention is integrally formed in the groove 67 formed on the outer circumferential surface of the outer bushing 60 and the key groove 109 of the locking device 100 to lock the lock. The side projection portion 109c which prevents the rotation of the outer handle 50 by being introduced into the groove 67 and interlocks, and is able to move away from the groove 67 at the time of unlocking to allow the rotation of the outer handle 50. Include.

Description

LOCKING STRUCTURE OF A DOOR-LOCK}

The present invention relates to a locking structure of the door lock, and more particularly, when the locked state is set, preventing the unlocking by the rotation of the outer handle, when the locked state is released, the door lock to enable the rotation of the outer handle The locking structure of the present invention.

In general, the door lock is to selectively set the locked state in the interior of the door as needed, the inside of the door can easily release the lock state, the outside of the door to release the lock state without using a key It is a device that prevents the intrusion of outsiders and maintains the privacy of the individual by not being able to do it.

1 is a perspective view of a door lock 200 including such a conventional locking device.

As shown in FIG. 1, the conventional door lock 200 rotates the locking dial 211 protruding from the front side of the inner handle 210 in one direction to rotate the outer handle 220 through a latch (not shown). The lock state is set by blocking the lock dial 211 by turning the locking dial 211 in the opposite direction or by a key hole (not shown) formed at the center of the outer handle at the outside of the door 250. It is configured to be released by rotating the key after inserting the key.

In the conventional door lock 200 as described above, if a force is excessively applied to rotate the outer handle 220 when the locking dial 211 is turned, the force is transmitted to the internal latch, There is a problem that a relatively expensive latch is broken and costs a lot of repairs.

Therefore, the present invention prevents the unlocking by the rotation of the outer handle without damaging the latch even if excessive force is applied to the outer handle when the locked state is set, and when the locked state is released, It is based on the problem to provide a locking structure of a door lock that enables rotation.

The problem is that the groove formed on the outer circumferential surface of the outer bushing and the key groove of the locking device are integrally formed so as to be introduced into and engaged with the groove at the time of lock setting, thereby preventing the rotation of the outer handle and preventing the locking of the outer handle. It is achieved by the locking structure of the door lock according to the present invention, which includes a side projection which allows the rotation of the outer handle away from the groove.

Hereinafter, with reference to the accompanying drawings, it will be described in detail the locking structure of the door lock according to an embodiment of the present invention.

1 is a schematic view of a conventional door lock.

Figure 2 is a schematic perspective view of a door lock including a locking structure according to an embodiment of the present invention.

Figure 3 is an exploded view of the door lock including a locking structure according to an embodiment of the present invention.

Figure 4 is a detailed view of the locking structure of the door lock according to an embodiment of the present invention.

5 is an operation of the locking structure of the door lock according to an embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

1: door lock device

10: inner plate

20: inner handle

30: inner bushing

40: outer plate

50: outside handle

60: outer bushing

67: home

70: latch

80: spindle

100: locking device

103: operation lever

109: key groove

109c: side projection

110: unlocking device

200: conventional door lock

2 shows a schematic perspective view of a door lock 1 including a locking structure according to an embodiment of the present invention, and FIG. 3 shows an exploded assembly of the door lock 1 including a locking structure according to an embodiment of the present invention. Shows a figure.

As shown in Figures 2 to 3, the door lock 1 including a locking structure according to an embodiment of the present invention, the inner and outer plates 10, 40 which are respectively installed on both sides of the door in a state coupled to each other ), The inner and outer handles 20 and 50 rotatably coupled to one side of the two side plates 10 and 40, and the inner side and rotatably fixed to the other side of the two side plates 10 and 40, respectively. The outer bushing (30, 60), the latch 70 is fixed to one side of the door located between the two plates (10, 40), through the latch (70) and both side bushings (30, 60) Both ends are fixed to the two side handles 20 and 50, respectively, and the outer plate is interlocked with the rotation of the spindle 80 and the operating lever 103 protruding to one side from the inner plate 10. The side protrusion 109c of the key groove 109 on the 40 is an outer side portion. Is introduced into the groove 67 on the outer peripheral surface (60) includes a locking device 100 for setting the locked state, the locking release mechanism 110 for releasing the locked state by the locking device 100.

In this case, the inner plate 10 is installed to be supported by a hole for the installation of the door lock on the inner side of the door toward the room, so that the inner handle 20 can be coupled, the inner plate 10 is one side A locking jaw 11 for coupling with the inner handle 20 is formed at the other side, and a locking jaw (not shown) for coupling onto the door is formed at the other side thereof, and the center of the inner bushing 30 is rotatable. The central hole 13 for fixing is formed.

In addition, on one side of the inner plate 10, a projection 14 for rotatable fixing of one end of the operating lever 43 of the locking device 40, and a side hole for side projection of the operating lever 43 15 and a through hole 16 for penetrating the key portion 47b of the second cam plate 47 of the locking device 40 is formed.

In addition, the inner plate 10 has a receiving portion 17 that can be coupled by the screw 18 is inserted into the screw hole portion 57 of the outer plate 50 for coupling with the outer plate 50 It is provided, on one side of the receiving portion 17 is formed a screw head seat 17a on which the screw head can be seated. It is preferable that two accommodation portions 17 are formed above and below.

On one side of the inner plate 10, several grooves 19, preferably two upper and lower grooves 19, into which the position fixing means 104 of the operation lever 103 to be described later is inserted and fixed are formed.

Inner handle 20 is coupled to one side of the inner plate 10, the inner handle 20 is rotated when opening the door from the inside of the door, or when the door is pushed or pulled As a part which is actually held by a user, the side plate 21 on which one side is formed with a corresponding engaging jaw 22 to be engaged with the engaging jaw 11 of the inner plate 10 and the other side is provided with a protruding through groove 23. And, one end side is fixed into the protruding through groove 23 of the side plate 21 and at the same time there is formed a fixing groove portion 27 is fixed to the one end of the spindle 80 is inserted into the fixing groove (27) And a handle lever 26 which is bent at a right angle and extends on the side of the door.

Combination of the side plate 21 and the handle lever 26 is a through screw hole (23a) formed on the protruding through groove portion 23 of the side plate 21, and the fixing groove portion 27 of the handle lever 26 The screw coupling hole 28 is inserted into and fixed into the through screw hole 27a formed in the groove.

According to an embodiment, the inner handle 20 may be formed integrally with the side plate 21 and the handle lever 26 are not coupled to each other.

The other side of the inner plate 10 is rotatably fixed to the inner bushing 30 through the central hole 13, the inner bushing 30 is a spindle 80 penetrating it through the inner handle 20 When rotating according to the operation, it rotates with respect to the inner plate 10 while supporting the spindle 80.

The inner bushing 30 is integrally formed with a protrusion 31 which is inserted into the central hole 13 of the inner plate 10 and protrudes. The protrusion 31 has a first cam plate (of the locking device 100). 101 is fitted and fixed, and a groove 31a is formed on the outer circumferential surface of the protrusion 31 to which the fixing piece 32 for the rotatable fixing of the inner bushing 30 is fitted. The protruding portion 31 is preferably formed in a key shape so that its cross section is not circular but can transmit the rotation of the inner bushing 30 to the first cam plate 101.

In addition, a through hole 33 for penetrating the spindle 80 is formed at the center of the inner bushing 30, and at one side of the inner bushing 30, the inner plate is rotated when the inner bushing 30 is rotated. A rotation stopper 35 is formed in contact with the upper and lower accommodation portions 17 of 10 to define the rotation range of the inner bushing 30.

The outer plate 40 coupled to the inner plate 10 at a predetermined interval is a hole for installation of the door lock 1 on the outer surface of the door facing inwardly so that the outer handle 50 can be coupled thereto. It is installed to be supported on, the outer plate 40 has a locking jaw 51 for coupling with the outer handle 50 is formed on one side, the locking jaw 42 for coupling onto the door is formed on the other side The center hole 43 is formed at the center thereof for the rotatable fixing of the outer bushing 60.

In addition, the protrusion 44 for allowing the central hole 113b of the pivoting lever 113 of the unlocking device 110 to penetrate and be rotatably fixed by the fixing piece 114 on one side of the outer plate 40. ) And a through hole 45 for allowing the side protrusion 109b of the key groove 109 to pass through the locking device 100 to be rotatably fixed. On the outer circumferential surface of the protrusion 44, a groove 44a for seating the fixing piece 114 is formed.

In addition, the outer plate 40 has a screw hole portion 46 which is inserted into the receiving portion 17 of the inner plate 10 for coupling with the inner plate 10 and can be coupled by a screw 18. Although provided, the screw hole portion 46 is preferably formed up and down corresponding to the receiving portion 17.

The outer handle 50 is coupled to one side of the outer plate 40, the outer handle 50 is rotated when the door is to be opened from the outside of the door, or when the door is pushed or pulled As a part actually held by a user, a side plate having a corresponding engaging jaw 52 engaged with a locking jaw (not shown) of the outer plate 40 is formed at one side and a protruding through groove 53 formed at the other side. (51) and one end side is fixed into the protruding through groove 53 of the side plate 51 and at the same time there is formed a fixing groove 57 is inserted into the other end of the spindle 80 is fixed to the other side And a handle lever 56 extending at an angle from 57 to the side of the door.

Combination of the side plate 51 and the handle lever 56 is a through screw hole (53a) formed on the protruding through groove portion 53 of the side plate 51, and the fixing groove portion 57 of the handle lever 56 It is made by inserting and screwing the screw engaging port 58 into the through screw hole (56a) formed in the.

According to the exemplary embodiment, the outer handle 50 may not be coupled to the side plate 51 and the handle lever 56, but may be integrally formed.

The other side of the outer plate 40 is rotatably fixed to the outer bushing 60 through the central hole 43, the outer bushing 60 is a spindle 80 through which the outer bushing 50 of the outer handle 50 When rotating according to the operation, it rotates with respect to the outer plate 40 while supporting the spindle 80.

The outer bushing 60 is integrally formed with a protrusion 61 inserted into the central hole 43 of the outer plate 40 and protruding therefrom. The outer bushing 60 is rotatable on the outer circumferential surface of the outer bushing 60. A groove 61a into which the fixing piece 62 for fixing is fitted is formed. Preferably, the protrusion 61 has a circular cross section.

In addition, a through hole 63 for penetrating the spindle 80 is formed at the center of the outer bushing 60, and at one side of the outer bushing 60, the outer plate at the time of rotation of the outer bushing 60. A rotation stopper 65 is formed in contact with the upper and lower screw hole portions 46 of 40 to define the rotation range of the outer bushing 60.

In addition, the groove 67 is formed on the outer circumferential surface of the outer bushing 60, the groove 67 is the outer side while selectively engaging the projection (109d) of the key groove 109 of the locking device 100 will be described later It serves to set or release the locked state of the handle (50).

A latch 70 is fixed to one side of the door and is positioned between the two plates 10 and 40, and the latch 70 has both spindles 80 and 90 according to the movement of both handles 20 and 50. By opening the door by driving the latch bolt 77 protruding toward one side of the door in accordance with the rotation of, the support plate 71 for fixing to one side of the door is formed, the body of the On both sides, two rotating holes 73 and 75 communicate with each other by inserting and fixing the other ends of both spindles 80 and 90. In this case, the support plate 71 has a through hole 72 through which the fixing screw 72 for the door is formed. Since the internal structure of the body of the latch 70 is the same as the conventional one, it will not be described here.

The inner handle 20 and the outer handle 50 are connected to be integrally rotated by the spindle 80, the spindle 80 is a pivot hole 73 and both side bushings (30, 60) of the latch (70) And the ends thereof penetrate through the central holes 33 and 63 and are inserted into and fixed to the fixing grooves 22 and 52 of the two handles 20 and 50, respectively. It serves to rotate the pivot hole 73 and the side bushings 30 and 60 of the latch 70 integrally, and is formed in a bar shape having a polygonal cross section, preferably a quadrangular cross section.

In addition, the rotation of the one side handle (20; 50) can be transmitted by the spindle 80 to both side bushing (30, 60), the rotation hole 73 of the latch 70 and the other handle (50: 20). As such, the fixing grooves 22 and 52 of the two handles 20 and 50, the central holes 33 and 63 of the two side bushings 30 and 60, and the pivot hole 73 of the latch 70 are formed in the spindle 80. It has a shape corresponding to the cross section of).

The spindle 80 is loosely coupled with both handles 20 and 50 so that relative slip is generated between them, so that the latches 70 are prevented from failing. It is preferable that both ends of the two handles 20 and 50 are firmly fixed so as not to slip relative to the side handles.

In order to securely engage the two handles 20 and 50 of the spindle 80, as shown in FIG. 3, the spindle 80 has eccentric holes 81 formed at both ends thereof so that one side of both ends thereof. The central portion has a relatively thin thickness, and the two side handles 20 and 50 have fixing grooves 27 and 57 and through-screw holes 26a and 56a, respectively, into which both ends of the spindle 80 are inserted, respectively. The threaded coupling holes 29 and 59 are fitted into the through threaded holes 26a and 56a of the handles 20 and 50, respectively, and penetrate into the central portions of one side of both ends of the spindle 80 so as to penetrate the spindle 80 and both sides. It is desirable to firmly engage the handles 20 and 50.

The inner plate 10 and the outer plate 40 is provided with a locking device 100, the locking device 100 to set or release the locked state of the outer handle 50 in accordance with the rotation of the operating lever 103 The first cam plate 101 fixed to the protrusion 31 of the inner bushing 30 and one end thereof are rotatably fixed on the inner plate 10 and the other end of the inner plate 10. An actuating lever 103 protruding from one side, a position fixing means 104 installed on the inner plate 10 to fix the pivot position of the actuating lever 103, and a pivot of the actuating lever 103. A second cam plate 107 integrally formed with the first cam plate 101 and integrally formed with a key portion 107b extending through the inner plate 10 and extending toward the outer plate 40; Engaged with the key portion 107b of the second cam plate 107 The side projection 109c is fixedly rotatable to the seat 40 and selectively stops the rotation of the outer bushing 60 according to the rotation of the operating lever 103. Key groove portion 109 is connected to the. Here, the locking means 100 preferably further comprises a connecting lever 105, the both ends of which are rotatably connected to the operating lever 103 and the second cam plate 107, respectively.

The first cam plate 101 is fitted to the protruding portion 31 of the inner bushing 30 and is fixed by the fixing piece 32 to be rotated together in accordance with the rotation of the inner bushing 30. 107 to be selectively engaged, a through hole 101a is formed at the center of the first cam plate 101 to be fitted into the protrusion 31 of the inner bushing 30, and the second cam plate is formed on the outer circumferential surface thereof. A cross-sectional extension 101b is formed which forms a cam that is selectively engaged with 107.

Since the first cam plate 101 is coupled onto the inner bushing 30 through the key-shaped through hole 101a, it is preferable that the first cam plate 101 rotates integrally with the inner bushing 30 when the inner handle 20 rotates. Do.

The actuating lever 103 is to set the lock state or release the lock state according to the rotation direction, one end of the actuating lever 103 is fitted onto the projection 14 on the inner plate 10, for example A through hole 103a is formed to be rotatably fixed by the fixing piece 104, and a through hole 105a formed at one end of the connecting rod 105 is fitted in the center thereof, for example, the fixing piece 106. The projection 103b is formed to be rotatably fixed by the other end, and the other end of the operation lever 103 protrudes to one side through a hole 15 formed at one side of the inner plate 10. In addition, a groove for mounting the fixing piece 106 is formed on the protrusion 103b.

A groove (not shown) is formed on the rear side of the operating lever 103, and the groove is selectively engaged with the position fixing tool 104, whereby the lock setting position and the unlocking position of the operating lever 103 are fixed. Play a role.

Position fixing tool 104 for fixing the up and down position of the operating lever 103 is provided in the groove 19 on one side of the inner plate 10 to be selectively engaged into the rear side groove of the operating lever 103 It is preferable that the elastic protrusions are formed of two elastic protrusions, and the elastic protrusions include an elastic spring fixed in the groove 19 and a spherical body supported by the elastic spring.

The connecting lever 105 is rotatably connected to the protrusion 103b of the operating lever 103, and the connecting lever 105 transmits a force acting on the operating lever 103 to the second cam plate 107. By passing, the projection 103b of the operating lever 103 is fitted to one end of the connecting lever 105, for example, the through hole 105a which can be fixed to the rotatable by the fixing piece 106 is The other end of the connecting lever 105 is formed with a projection 107a formed on the second cam plate 107 to be rotatably fixed by, for example, the fixing piece 108. 105b is formed. Here, the connection lever 105 preferably has a shape that is bent in an arc shape.

The other cam plate 107 is rotatably connected to the other end of the connecting lever 105, the second cam plate 107 and the first cam plate 101 in accordance with the rotation of the operating lever 103 By selectively engaging, the projection hole that can be fixed to the side of the second cam plate 107 by the through hole 105b of the connecting lever 105, for example, by the fixing piece 108. A key portion 107a is formed, and the other side of the second cam plate 107 penetrates the through hole 16 of the inner plate 10 to be engaged with the key groove 109a of the key groove 109. 107b) is integrally formed.

The key groove 109 is engaged with the key portion 107b of the second cam plate 107 so that the key groove portion 109 is rotatably fixed to the outer plate 40, and the key groove portion 109 is rotated by the operating lever 103. It is possible to lock and unlock the outer grip 50 by determining whether or not the outer bushing 60 is rotated relative to the key. On one side, the key portion 107b of the second cam plate 107 is provided. The engaging portion 109b is formed to be received and engaged with the key groove 109a and fitted into the through hole 45 of the outer plate 40 on the other side, for example, to be rotatably fixed by the fixing piece 109e. Is formed.

The locking device 10 includes a locking structure of the door lock according to the present invention, which maintains the locked state by preventing the rotation of the outer handle 50 after the locked state is set. Illustrated.

As shown in FIG. 4, the locking structure 1 of the door lock according to the present invention is rotatably fixed to the outer plate 40 to which the outer handle 50 is coupled, and both handles 20 by the spindle 80. And a groove 67 formed on the outer circumferential surface of the outer bushing 60 which is connected to and driven by the spring 50 and the locking device 100, in particular, the key groove 109. And a side projection 109c which prevents the rotation of the outer handle 50 by being introduced into the mesh and prevents the rotation of the outer handle 50 from being released from the groove 67 at the time of unlocking. On the side protrusion 109c, a protrusion 109d is engaged with an upper end of the rotation lever 113 of the unlocking means 110 which will be described later.

Here, the side protrusion 109c is preferably bent at an acute angle so as not to escape from the groove 67 by being pushed by the forcible rotational force of the outer bushing 60 applied by the outer handle 50 at the time of locking setting. .

In this case, the direction of the force exerted on the side protrusion 109c by the groove 67 of the outer bushing 60 is the centerline of the key groove 109 which is rotatably fixed on the outer plate 40. As the line of action of the force and the center line of the key groove 109 are parallel to each other in a direction, the key groove portion (even if a force is applied on the side protrusion 109c by the groove 67 of the outer bushing 60). 109 cannot rotate, and thus the side protrusion 109c is kept in the groove 67, thereby preventing rotation of the outer handle 50. As shown in FIG.

Therefore, in the case where the locking state is set by the locking device 100, even if the force is applied to the outer handle 50 excessively, the force is the side of the groove 67 and the key groove 109 of the outer bushing 60. Since it is applied only to the engaging portion of the protrusion 109c and is hardly transmitted to the latch 70, it is possible to prevent the unlocking by the rotation of the outer handle 50 without damaging the latch 70.

Figure 5 shows the operation of the locking structure of the door lock according to the present invention. Hereinafter, with reference to Figure 5, the operation of the locking device 100 according to the present invention. Here, the projection 107a is located on the left side of the center line of the second cam plate 107, so that the locking state is set when the operating lever 103 rotates in the counterclockwise direction and the locking state when it rotates in the clockwise direction. Is explained on the basis of which is released:

First, when the operating lever 103 is rotated counterclockwise, the connecting lever 105 connected to the operating lever 103 is moved up along an oblique inclination, and the connecting lever 105 is moved. Accordingly, the second cam plate 107 is rotated clockwise about the key portion 107b to enter into the rotation radius of the first cam plate 101 to be engaged with each other, and at the same time the key of the second cam plate 107 The key groove portion 109 pivotally connected to the portion 107b is also rotated in the clockwise direction on the outer plate 40, so that the side protrusion portion 109c integrally formed with the key groove portion 109 is formed on the outer bushing 60. The locked state is set by flowing into the groove 67 formed on the outer circumferential surface and preventing rotation of the outer bushing 60.

On the contrary, when the operating lever 103 is rotated in the clockwise direction, the connecting lever 105 connected to the operating lever 103 is moved downward along an oblique inclination, and the connecting lever 105 is moved. Accordingly, while the second cam plate 107 is rotated counterclockwise around the key portion 107b, the second cam plate 107 is released from within the rotation radius of the first cam plate 101, and at the same time, the key of the second cam plate 107 is The key groove portion 109 pivotally connected to the portion 107b is also rotated counterclockwise on the outer plate 40, and the side protrusion portion 109c integrally formed with the key groove portion 109 is the outer bushing 60. The locking state is released by allowing the outer bushing 60 to rotate out of the groove 67 formed on the outer circumferential surface thereof.

On the contrary, when the protrusion 107a is located on the right side with respect to the center line of the second cam plate 107, the locking device 100 is locked when the operating lever 103 is rotated clockwise. When set and rotated counterclockwise, the locked state is configured to be released. In this case, only the operation of the operation lever 103 and the connection lever 105 in the above operation description is different, and the rest are operated in the same way.

According to the present invention when the insertion means is pushed into the side hole 111 formed on one side of the outer plate 10 by being connected to the key groove 109 of the locking device 100 on the outer plate 40 The locking release device 110 for releasing the locked state by the locking structure of the door lock is provided.

The locking release device 110 is a key groove portion when a force is applied to the lower end by the side hole 111 formed on one side of the outer plate 40 and the insertion means pushed through the side hole 111. And a rotation lever 113 for rotating 109 in the unlocking direction.

The pivoting lever 113 has a projection 44 on the outer plate 40 is inserted into the center portion, for example, a through hole 113a which can be pivotally connected by the fixing piece 114 is formed. Coupling portion 113b coupled to the projection 109d formed on the side projection 109c of the key groove 109 is formed, and at the bottom thereof, a vertical plate 113c positioned on the same line as the side hole 111. Is formed.

When unlocking by the unlocking device 110, the operation of the locking structure of the door lock according to the present invention will be described as follows:

When the locking state is set by the locking structure of the door lock according to the present invention, the insertion means is pushed through the side hole 111 to push the vertical plate 113c of the pivot lever 113, the pivot lever The 113 is rotated in the clockwise direction about the through hole 113a, and the engaging portion 113b formed at the other end of the pivoting lever 113 rotates clockwise and at the same time, the key groove portion 109. The key groove portion 109 is rotated counterclockwise on the outer plate 40 by applying a force to the side protrusion portion 109c, whereby the side protrusion portion 109c of the key groove portion 109 is the outer bushing. The lock state is released by allowing the outer bushing 60 to rotate out of the groove 67 formed on the outer circumferential surface of the 60.

Therefore, the locking structure of the door lock according to the present invention as described above, if the locking state is set by allowing the locking on the outer bushing itself to be set or released, the outer handle without damaging the latch even if forcibly applied to the outer handle There is an excellent effect of preventing the unlocking by the rotation of the wheel, and enabling the rotation of the outer handle when the locked state is released.

Claims (2)

In the locking structure of the door lock which prevents the rotation of the outer handle when the locked state is set by the predetermined locking device, A groove formed on an outer circumferential surface of the outer bushing rotatably fixed to an outer plate to which the outer handle is coupled and driven to be connected to both handles by a spindle; And a side protrusion formed integrally with the locking device to prevent rotation of the outer handle by being introduced into and engaged with the groove when the lock is set. The method of claim 1, And the side protrusion is formed at an acute angle so as not to be pushed out of the groove by being pushed by a forced rotational force of the outer bushing applied by the outer grip when the lock is set.