KR200293455Y1 - The full duplex locking equipment for door latch - Google Patents

Abstract

The present invention relates to a two-way locking device of the door latch, and more specifically, the latch bolt 20 and the latch bolt 20 that is installed in the main body case 10 as coil springs 22, 23, 24 In a conventional door latch composed of a movable plate 40 coupled to one end, a pair of cams 50 and 60 for operating the movable plate 40, and a locking bar 30 for controlling the rotation of the cam. The front and rear of the main body case 10, through-holes 12 are formed respectively, so that both ends of the locking bar 30 before and after protruding, and one side of the locking bar 30, the corner portion of the opposite surface The tapered first release protrusion 32 and the second release protrusion 34 are formed to face each other, but the first release piece 32a is formed on the inner surface of the first release protrusion 32 and the second release protrusion A second locking piece 34a is formed on the outer surface of the 34, and stone pieces 52 and 62 are formed on the outer circumferential surfaces of the first cam 50 and the second cam 60 which are installed to face each other. First A locking groove 524 is formed in the center of the stone piece 52 of the 50 to form a seating portion 522 having the upper and lower edges of one side thereof tapered, and one side of the stone piece 62 of the second cam 60. An arc-shaped locking piece guide groove 626 is formed along the outer circumference of the cam to form a through hole 628 penetrating the stone piece 62 in the center thereof, and the locking groove 624 tapered to the outside of the through hole 628. Since the first cam 50 and the second cam 60 is selectively fixed by the locking bar 30 so that the lock can be set in both directions of the door latch, even if the installation direction of the door latch is reversed, the door Regardless of the opening direction, the door latch can be installed easily and freely.

Description

The full duplex locking equipment for door latch}

The present invention relates to a two-way locking device of the door latch, and more specifically, it is possible to set and release the locking device on both the inside and the outside of the door door is installed, the door pushed outward or pulled inward to open Regardless of the door, the door latch can be installed easily.

In general, the door latch is a type of locking device that can be set or released by pressing or pulling the locking bar without a key among the locking devices installed at the door. Or many bathroom doors are installed.

These door latches are described in brief to explain the basic structure, the latch bolt which is installed inside the main body case and enters the bolt insertion portion formed in the door frame, and the door is fixed, the movable plate for operating the latch bolt, and the door for operating the movable plate. The cam has a spindle engaging hole into which the spindle of the handle is fitted, and a locking bar for controlling the rotation of the cam to set or unlock the door latch.

However, the above conventional door latch is generally installed only in one direction because the locking bar for controlling the lock of the door is formed only on one side of the door latch.

Therefore, the existing door latch has a constraint that the door latch must be installed so that the locking bar that locks the door is located inside the door.

However, some of the doors installed in the building are not only doors that are pushed outwards but also doors that are pulled inwards in opposite directions. In order to reverse the latch bolt, the latch bolt bolted with the coil spring must be pulled out by force and then rotated in the direction. In case of flipping, the gap between the operation hole of the cover and the latch bolt attached to the installation surface of the main body case is shifted frequently, and the operation of the latch bolt is not normally performed.

The present invention has been devised to solve the above-mentioned conventional problems, by installing a double cam in the interior of the door latch to form a locking groove for setting the lock on each cam, and selectively locking the double cam installed on the locking bar By forming a double locking piece that can be set, it is possible to set and release the lock in both directions of the door latch, so that the door latch can be easily installed in any direction regardless of the direction of opening the door. Is as follows.

1 is a perspective view of the present invention

2 and 3 are exploded perspective views of the locking bar and the cam of the present invention

4 is a perspective view showing a cam of the present invention

Figure 5 is a planar cross-sectional view showing a state in which the door latch of the present invention is unlocked

Figure 6 shows a state in which the door latch of the present invention is locked on the inside of the door

Plane Cross Section Example

Figure 7 shows a state in which the door latch of the present invention is locked on the outside of the door

Plane Cross Section Example

8 is a plan view showing a cross-sectional view showing a state of use of the door latch.

* Explanation of symbols for the main parts of the drawings

10: main body case 10a: cover

12: through hole 14: guide block

20: latch bolt 22, 23, 24: coil spring

30: locking bar 32: first release protrusion

32a: first jamming 34: the second release protrusion

34a: second jammer 36: screw hole

38: lever 40: movable plate

42: cam catching part 50: the first cam

60: second cam 50a, 60a: spindle coupling hole

52, 62: stone pieces 522, 622: seating portion

524, 624: hanging groove 626: guide groove

628: through-hole 70: door handle

72: spindle 80: door frame

90: door

Movable plate 20, which is installed in the main body case 10 as the coil springs 22, 23, 24, and the movable plate which is coupled to one end of the latch bolt 20, the cam engaging portion 42 is formed on both sides. 40 and a pair of cams 50 and 60 for forming the spindle coupling holes 50a and 60a into which the door handle spindle is fitted to operate the movable plate 40, and the body case 10. In the conventional door latch, which is provided on the guide block 14 and composed of a locking bar 30 for controlling the rotation of the cam,

Through holes 12 are formed at the front and rear of the body case 10, so that both ends of the locking bar 30 are protruded.

On one side of the locking bar 30, the first release protrusion 32 and the second release protrusion 34, each of which has a tapered edge portion of the opposite surface, are formed to face each other, but the inner surface of the first release protrusion 32 The first catching piece (32a) is formed on the outer surface of the second release projection (34) to form a second catching piece (34a),

Stone pieces 52 and 62 are formed on the outer circumferential surfaces of the first cam 50 and the second cam 60, which are installed to be in contact with each other. The upper and lower edges of one side thereof are formed to form a seating portion 522 tapered, and one side of the protrusion piece 62 of the second cam 60 has an arc-shaped locking piece guide groove 626 along the outer periphery of the cam. It forms a through hole 628 penetrating the stone piece 62 in the center thereof, and forming a locking groove 624 tapered to the outside of the through hole 628, the first cam 50 by the locking bar 30 ) And the second cam 60 is selectively fixed.

In this way, the present invention can operate the locking bar 30 for setting or releasing the door latch from both sides of the door latch before and after the door latch, so that the door latch can be easily installed regardless of the direction in which the door is opened or closed. It will be described in more detail as an embodiment of the present invention as follows.

1 is a perspective view showing the present invention, the front and rear ends of the locking bar 30 are provided to protrude through the through part 12 formed on the front and rear surfaces of the main body case 10, so that the door The door latch can be locked and unlocked in both directions of the latch.

As shown in the accompanying drawings, FIGS. 2 and 4 show the locking bar 30 and the cam which enable the locking of the door latches in both directions. As shown in the drawing, the locking bar 30 has one side for controlling the operation of the cam. A first release protrusion 32 and a second release protrusion 34 are formed, and each release protrusion is coupled to a seating portion 522 and a through hole 628 formed in the first cam 50 and the second cam 60. The first locking piece 32a and the second locking piece 34a are formed to suppress the rotation of the cam so that the door latch is locked. Each of the locking bar 30 and the first cam 50), the interaction between the second cam 60 will be described in more detail as follows.

5 is a planar cross-sectional view showing a state in which the door latch of the present invention is in a normal state of unlocking, the first release protrusion 32 and the second formed on one side of the locking bar 30 as shown in the drawing The second protrusion piece 34a formed on the outside of the second release protrusion 34 while the release protrusion 34 does not fix any of the first cam 50 and the second cam 60 is the second cam. Since the locking piece guide groove 626 formed in an arc shape along the outer circumference of the cam is fitted to the stone piece 62 of 60, the door handle in which the spindle is inserted into the spindle engaging holes 50a and 60a in any direction. Even if it is rotated, the first cam 50 and the second cam 60 can be freely rotated to operate the movable plate 40, so that the latch bolt 20 can operate to maintain a state in which the door can be opened. do.

However, when the locking bar 30 is pushed from the inside (IN) after the door latch is installed on the door as shown in FIG. 6, the locking bar 30 is introduced into the main body case 10 while the work of the locking bar 30 is applied. The first catching piece 32a formed on the inner surface of the first release protrusion 32 while being fitted to the seating portion 522 formed on the stone piece 52 of the first cam 50 by the first release protrusion 32 formed on the side surface. ) Is inserted into the locking groove 624 formed on the outer side of the stone piece 62 of the second cam (60) to suppress the rotation of the second cam (60), which is the spindle of the door handle installed on the outside (OUT) Since the second cam 60 into which 72 'is inserted cannot rotate, the door latch is locked and the door is locked.

After the locking of the door latch is set in this way, if the locking bar 30 is returned to its original position, the locking setting of the door latch is released. However, if the user is located inside the lock bar 30, If only the door handle in which the spindle 72 is fitted to the first cam 50 without release is rotated, the locking bar 30 is forced to return to its original position by the rotation of the first cam 50 and the second cam 60 is rotated. Since the first locking piece 32a which has suppressed the rotation of the) is released from the locking groove 624 formed on the outer side of the protrusion 62 of the second cam 60, the lock setting of the door latch is more easily released.

This is because both edge portions of the seating portion 522 formed on the stone piece 52 of the first cam 50 and the edge portion of the first release protrusion 32 formed on the locking bar 30 are both tapered. When the first cam 50 rotates while the tapered portion formed in the portion 522 and the tapered portion formed in the first release protrusion 32 are in contact with each other, the first release protrusion 32 is inward by the rotational force. Since it is pushed in the (IN) direction, the door latch can be easily released by simply operating the door handle as described above.

On the other hand, Figure 7 is a view showing the locking state of the door latch when the locking bar 30 is operated from the outside (OUT), as shown in the figure from the outside (OUT) to the locking bar (30) When the locking bar 30 is inserted into the body case 10, the second release protrusion 34 of the locking bar 30 is fitted to the seating part 622 of the second cam 60. The second locking piece 34a formed on the outside of the second release protrusion 34 passes through the through hole 628 formed in the second cam 60 and is formed in the center of the stone piece 52 of the first cam 50. 524 to be fitted.

Therefore, since the rotation of the first cam 50 is suppressed by the second locking piece 34a fitted in the locking groove 524, the door handle installed on the inside IN is locked in a state in which the door latch cannot be rotated. Will be set.

In addition, in the case of Figure 7, as described with reference to Figure 6 above, after the lock of the door latch is set, if the locking bar 30 is returned to its original position, the lock of the door latch is released, but the outside ( In the case where the user is located at OUT), only the door handle in which the spindle 72 'is fitted to the second cam 60 is rotated without releasing the locking bar 30, and the locking bar is rotated by the rotation of the second cam 60. In the locking groove 524 formed in the protrusion piece 52 of the first cam 50, the second locking piece 34a, which has been forcibly returned to the original position while suppressing the rotation of the first cam 50, has been made. Since the lock setting of the door latch is more easily released because it is separated, which is described with reference to FIG. 6, the edges of both sides of the seating portion 622 formed on the protrusion 62 of the second cam 60 and the locking bar 30. The edge portion of the second release protrusion 34 formed in the) is all possible because the tapered process.

Therefore, the present design has the advantage that the door latch can be set in both directions, so even if the installation direction of the door latch is reversed, the door latch can be easily and freely installed regardless of the direction in which the door is opened.

Claims (1)

Movable plate 20, which is installed in the main body case 10 as the coil springs 22, 23, 24, and the movable plate which is coupled to one end of the latch bolt 20, the cam engaging portion 42 is formed on both sides. 40 and a pair of cams 50 and 60 for forming the spindle coupling holes 50a and 60a into which the door handle spindle is fitted to operate the movable plate 40, and the body case 10. In the conventional door latch, which is provided on the guide block 14 and composed of a locking bar 30 for controlling the rotation of the cam, Through-holes 12 are formed at the front and rear of the body case 10, respectively, so that both ends of the locking bar 30 are protruded, and one side of the locking bar 30 is tapered at the edge of the opposite surface. The first release protrusion 32 and the second release protrusion 34 are formed to face each other, but the first release piece 32a is formed on the inner surface of the first release protrusion 32 and the second release protrusion ( A second catching piece 34a is formed on the outer surface of the 34, Stone pieces 52 and 62 are formed on the outer circumferential surfaces of the first cam 50 and the second cam 60, which are installed to be in contact with each other. The upper and lower edges of one side thereof are formed to form a seating portion 522 tapered, and one side of the protrusion piece 62 of the second cam 60 has an arc-shaped locking piece guide groove 626 along the outer periphery of the cam. It forms a through hole 628 penetrating the stone piece 62 in the center thereof, and forming a locking groove 624 tapered to the outside of the through hole 628, the first cam 50 by the locking bar 30 ) And the second cam 60, the two-way locking device of the door latch, characterized in that the configuration to be fixed