KR20090051365A - Safety door lock of dual construction - Google Patents

Abstract

The present invention provides a door lock for operating the latch bolt 10 and the guard bolt 30 with one lever, and locking and unlocking with the other lever. A latch link 20 for advancing back and forth the bolt 10; A lock link 40 connected to the other lever to rotate at a predetermined angle and restrain the forward and backward movement of the latch bolt 10; Adjusting means is located on one side of the up and down stroke end according to the rotation angle of the lock link (40), to individually control the rotation of each latch link (20); And an auxiliary lock means for restraining the reverse of the latch bolt 10 while the guard bolt 30 is in the reverse position.

Accordingly, the present invention, while having a latch bolt and a guard bolt can be opened with a single lever in the event of an emergency such as a fire to improve safety, and can change the installation direction of the inner and outer sides as necessary, improving durability. have.

Latch, Dead, Door Lock, Double, Safety, Emergency

Description

Safety door lock of dual construction

The present invention relates to a safety door lock, and more particularly, having a latch bolt and a guard bolt can be opened with one lever in case of an emergency such as a fire to improve safety and change the installation direction of the inner and outer sides as necessary. The present invention relates to a safety door lock of a dual structure that can improve durability.

For example, according to Korean Utility Model No. 0282709, a key drive unit connected to a guard bolt shaft is installed through the external unit, and the handle shaft and the dead bolt shaft are penetrated by the rotation of the handle shaft. Disclosed is a door lock device comprising a back set in which dead bolts, latch bolts, and automatic lock buttons are mounted, and the dead bolts are mounted by rotation of the dead bolt shaft.

As another example, the main configuration of Korean Utility Model No.0205795 is a dead bolt disposed inside the housing and moved to the locked and unlocked position, and a rotating member rotated to the dead bolt and restored to its original position by a spring; A guide plate for guiding the movement of the rotating member in the longitudinal direction, a slide rotating member returned to its original position by a spiral spring fixed by a pin, and a latch bolt for selectively moving the slide to a locked and released position. .

The door lock can be expected security against crime prevention based on the latch bolt and dead bolt. However, the former is a component that enhances the security function with a relatively convenient operation, but lacks the function to prepare for the safety of the user in case of emergency such as a fire. The latter is molded in one piece, making it easy to install in any location that requires a locking device for the door. However, in either case, since the indoor and outdoor sides are distinguished from side to side and do not change, it is difficult to expect to increase durability.

Literature Information of the Prior Art

[Document 1] Korean Utility Model Registration No. 0282709 “Door Lock Device”

[Reference 2] Korean Utility Model Registration No.0205795 “Locking Device for Door”

Accordingly, the present invention is to fundamentally solve the conventional problems as described above, while having a latch bolt and a guard bolt can be opened with a single lever in the event of an emergency such as a fire to improve the safety, An object of the present invention is to provide a double door safety door lock that can change the installation direction of the outside to improve durability.

In order to achieve the above object, the present invention provides a door lock that operates a latch bolt and a guard bolt with one lever, and locks and unlocks with the other lever. A latch link for advancing and reversing the bolt; A lock link connected to the other lever to rotate at a predetermined angle and restrain the forward and backward movement of the latch bolt; Control means positioned on one side of the upper and lower stroke ends according to the rotation angle of the lock link, and separately controlling the rotation of each latch link; And an auxiliary lock means for restraining the reverse of the latch bolt while the guard bolt is in the reverse position.

In addition, the adjusting means according to the present invention is an operating rod which is in contact with the lock link and the latch link and moves up and down through the projection and the slide surface, a double block which is installed adjacent to the latch link on the operating rod, and each of the blocks Characterized in that it comprises an eccentric cam is installed to individually adjust the protruding length of.

In addition, the auxiliary lock means according to the present invention is an upper link which is rotatably installed in a state of engagement in linkage with the forward and backward movement of the guard bolt, and a state in which the restraint or release of the latch bolt in conjunction with the upper link restrained or released And an intermediate link rotatably installed in a ro, and a lower link rotatably installed to release the locked state of the intermediate link in conjunction with the latch link.

On the other hand, the terms or words used in the present specification and claims are not to be construed as limiting the ordinary or dictionary meanings, the inventors should use the concept of the term in order to explain the invention in the best way. Based on the principle that it can be properly defined, it should be interpreted as meaning and concept corresponding to the technical idea of the present invention. Therefore, the embodiments described in the present specification and the configuration shown in the drawings are only the most preferred embodiments of the present invention, and do not represent all of the technical ideas of the present invention, and various alternatives may be substituted at the time of the present application. It should be understood that there may be equivalents and variations.

As described in the above configuration and operation, the present invention is provided with a latch bolt and a guard bolt can be opened with a single lever in the event of an emergency, such as a fire to improve safety, and can change the installation direction of the inner and outer as necessary It provides the effect of improving durability.

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

1 is a configuration diagram showing the unlocked closed state of the door lock according to the present invention, Figure 2 is a configuration diagram showing the unlocked open state of the door lock according to the present invention, Figure 3 is a disassembled operation rod of the door lock according to the present invention 4 is a configuration diagram showing a lock closing state of the door lock according to the present invention, and FIG. 5 is a configuration diagram showing a lock opening state of the door lock according to the present invention.

The present invention relates to a door lock that operates the latch bolt 10 and the guard bolt 30 with one lever, and locks and unlocks with the other lever. Since the levers are not different from the known technology, they are not separately illustrated, but for convenience of understanding, the latter lever is referred to as a 'locking lever'. The opening and closing lever is installed on the indoor side and the outdoor side of the door, respectively, and is used to open the door in general, and the lock lever is installed only on the indoor side of the door to prevent unauthorized entry into the interior. The latch bolt 10 is interlocked with the frame 12 and is installed to receive the elastic force of the spring 13 in the forward direction.

According to the present invention, the latch link 20 for advancing the latch bolt 10 forward and backward is divided into left and right types and is provided on a double shaft. The latch link 20 has a shape in which the lower arm 20a and the upper arm 20b are formed at both sides, respectively, and has a square hole for fixing the opening and closing lever at the center. The recess 20c formed in one side of the latch link 20 is used to operate the guard bolt 30, which will be described later, and the sliding curved surface 20d formed as a stepped surface on the other side is the present invention. Perform safety functions, one of the important functions.

In order to be installed on the coaxial in such a state that the latch link 20 is overlapped twice, each should be formed in a line symmetric structure. Each latch link 20 is fixed to the indoor opening and closing lever and the outdoor opening and closing lever. If the latch link 20 has a dual structure, the advantages of installing the lever on the indoor side and the outdoor side can be achieved. Of course, in order to change installation, the position of the related parts including the latch bolt 10 must also be changed.

In addition, according to the present invention, the lock link 40 which restrains the forward and backward movement of the latch bolt 10 is connected to the other lever and installed to rotate at a set angle. The lock link 40 has a shape having a lower arm 40a and an upper arm 40b around a square hole for fixing the lock lever on the indoor side. If the lower arm 40a is rotated to be adjacent to the rear end of the frame 12 by rotating the lock lever to the lock position, it is impossible to open the door because further backwards are constrained even when the latch bolt 10 is reversed by the outdoor lever. Do. On the other hand, due to the configuration in which the operation rod 42, which will be described later, is engaged with the upper arm 40b, it can be quickly switched to the unlocked state only by the indoor lever regardless of the locking lever.

In addition, according to the present invention, the adjustment means for controlling the rotation of each latch link 20 separately is installed so as to be located on one side of the upper and lower strokes in accordance with the rotation angle of the lock link (40). The adjustment means is in contact with the lock link 40 and the latch link 20 through the projection (42a) and the sliding surface (42b) and the up and down movement rod 42, the latch link on the operation rod (42) A double block 45 is installed adjacent to the 20, and the eccentric cam 46 is installed to individually adjust the protruding length of each of the blocks (45). The actuating rod 42 is in the form of a long rod and is mounted to be able to move up and down. The upper arm 40b of the lock link 40 is engaged between the curved projections 42a formed at two points at the lower end of the actuating rod 42. A sliding curved surface 42b is formed at one side of the upper end of the operating rod 42 to engage or be spaced apart from the sliding curved surface 20d of the latch link 20. A space is formed at the top of the operating rod 42 and accommodates the pair of blocks 45. The double blocks 45 correspond to the double latch links 20, respectively. The block 45 is adjusted to be located above or below the sliding surface 42b of the actuating rod 42. When the block 45 is positioned lower than the sliding surface 42b, the block 45 is engaged with the stepped sliding surface 20d of the latch link 20 to restrain the rotation of the latch link 20 so that the emergency opening mode, which is a main function of the present invention, is not performed. (Normally, the outdoor side is left in this mode.) On the contrary, when the block 45 is adjusted to the maximum possible state, the sliding surface 42b of the operating rod 42 is removed by the latch link ( It comes into contact with the slide curved surface 20d of 20 and becomes an emergency opening possible mode (normally, the indoor side is left in this mode).

Referring to FIG. 3, an eccentric cam 46 is used to adjust the protruding length of the block 45. The eccentric cam 46 has a structure in which a control shaft 46a is formed at one side of the plate-shaped body and a support shaft 46b is formed at the other side. The adjusting shaft 46a is a portion where a groove for using a driver is formed at the upper end, and the supporting shaft 46b is a portion inserted into the through recess 45a of the block 45. The through-spring 45a of the block 45 is provided with a leaf spring 47 to prevent any rotation of the support shaft 46b. The eccentric cam 46 and the leaf springs 47 are provided in the same double for each block 45.

At this time, the operating rod 42 of the present invention is provided with a contactor 44 supported on the spring 43 on one surface to maintain the position of the up and down one end of the stroke. The contactor 44 is accommodated in the working rod 42 to receive the elastic force of the spring 43, and is firmly held by the mountain-shaped curved jaw formed on the main body to maintain the position of the upper and lower stroke ends.

6 is a block diagram showing the auxiliary lock means of the door lock according to the present invention.

According to the invention there is provided an auxiliary lock means for restraining the reverse of the latch bolt 10 while the guard bolt 30 is in the reverse position. The auxiliary lock means of the present invention is composed of the upper link 30, the intermediate link 26, the lower link 25 and is connected directly or indirectly to the guard bolt (30).

The upper link 35 is rotatably installed in a tangent state to interlock with the front and rear of the guard bolt 30. The torsion spring 37 installed on the rotation shaft of the upper link 35 acts as an elastic force in the direction of advancing the guard bolt 30.

The intermediate link 26 is rotatably installed in a tangent state so as to restrain or release the forward and backward of the latch bolt 10 in conjunction with the upper link 35. If the upper link 35 is cantilevered, the intermediate link 26 has two arms 26a and 26b. The spring 27 provided on the rotating shaft of the intermediate link 26 exerts an elastic force in the downward direction of the arms 26a and 26b. The upper arm 26a of the intermediate link 26 extends in and out of the forward and backward path of the latch bolt 10, and the lower arm 26b extends in the downward direction to reach the lower link 25 described later. .

The lower link 25 is rotatably installed to release the locked state of the intermediate link 26 in conjunction with the latch link 20. The lower link 25 also has a lower arm 25a and an upper arm 25b like the intermediate link 26. The lower arm 25a is engaged with the groove 20c of the latch link 20, and the upper arm 25b freely contacts the intermediate link 26.

At this time, in the present invention, the lower end portion of the upper link 35 interferes with the protruding pins 26c formed on the upper arm 26a of the intermediate link 26 and takes the configuration of rotating the intermediate link 26. Detailed operation thereof will be described later.

First, the operation will be described with reference to FIGS. 1 to 5. In order to use the door lock of the present invention, the installation direction of the indoor side or the outdoor side should be determined. Of course, you can also reverse the installation location after a period of use. If the block 45 on the upper side (indoor side or visible side) is lowered and the lower block 45 is raised on the basis of FIG. 1, an indoor side opening lever and a lock lever are installed on the upper side and the lower side (outdoor side or visible side). Outside lever) for the open / close side. 1 and 2 in the unlocked state, as shown in FIG. 2, when the opening and closing lever rotates the latch bolt 20 and the latch bolt 10 and the guard bolt 30 in accordance with the rotation of the door is opened. It is possible to open or close the door whether the lever is for the indoor side or the lever for the outdoor side.

However, as shown in FIG. 4, when the lock lever is rotated in the room side, the lower arm 40a of the lock link 40 approaches the frame 12, and the upper arm 40b pushes the operation rod 42 downward. . The actuating rod 42 in the once lowered state is maintained by the contactor 44 accommodated on one side and the corresponding jaw, without any change in position, and a solid lock state is maintained. Even if the latch link 20 is rotated by the lever on the outdoor side in this state, the retraction of the frame 12 is restrained so that the door is not opened.

However, as shown in FIG. 5, when the lever for the interior lock is strongly rotated, the sliding curved surface 20d of the latch link 20 pushes the sliding curved surface 42b of the operating rod 42 to push the operating rod 42 upward. This is because the indoor block 45 is raised as described above. When the operation rod 42 is raised, the lock link 40 is naturally rotated in reverse and releases the restraint of the frame 12 so that the door is opened. That is, when an elderly person or a child evacuates in an emergency at the time of a fire, the door can be opened by rotating only one lever without operating two levers. Even if the outdoor side opening and closing lever is rotated in the state of FIG. 5, since the outdoor block 45 restricts the rotation of the latch link 20, the door lock state cannot be released.

In the operation of Figure 6, the guard bolt 30 of the present invention is a portion to automatically perform the auxiliary lock function is formed in the form of a triangular or curved shape of the front end, not square, so as to smoothly move forward and backward without opening and closing the door. do. When the guard bolt 30 is retracted in the state in which the door is closed as shown in FIG. 6, the upper link 35 also rotates in the same direction and releases the restraint of the intermediate link 26. Accordingly, while the intermediate link 26 is rotated downward by the elastic force of the spring 27, the upper arm 26a enters the path of the latch bolt 10 to restrain the forward and backward movement. Therefore, even when the door is closed, a closed state (auxiliary lock function) is maintained even when the door is opened by forcibly reversing the latch bolt 10 with a knife or a card from the outside.

On the other hand, when the latch link 20 is rotated by turning the lever, the lower link 25 rotates so that the upper arm 25b of the lower link 25 pushes up the lower arm 26b of the intermediate link 26 to latch. The bolt 10 is rotated and the door can be opened. Of course, once the door is opened and the guard bolt 30 is in the forward state as indicated by the dashed line, the upper link 35 interferes with the protruding pin 26a and pushes up the intermediate link 26 so that the auxiliary lock function is performed. It doesn't work.

As described above, the safety door lock according to the present invention has a latch bolt and a guard bolt, and can be opened with one lever in case of an emergency such as a fire, thereby improving safety, and changing the installation direction of the inner and outer sides as necessary. Is improved.

It is apparent to those skilled in the art that the present invention is not limited to the described embodiments, and that various modifications and variations can be made without departing from the spirit and scope of the present invention. Therefore, such modifications or variations will have to belong to the claims of the present invention.

1 is a configuration diagram showing an unlocked closed state of a door lock according to the present invention;

2 is a configuration diagram showing an unlocked open state of a door lock according to the present invention;

3 is an exploded perspective view showing an operating rod of a door lock according to the present invention;

4 is a configuration diagram showing a closed state of a door lock according to the present invention;

5 is a configuration diagram showing a lock opening state of a door lock according to the present invention;

6 is a block diagram showing the auxiliary lock means of the door lock according to the present invention.

Explanation of symbols on the main parts of the drawings

10: Latch Bolt 12: Frame

20: Latch Link 22: One Piece

25: upper link 30: guard bolt

32: Guide 35: Lower Link

40: lock link 42: operating rod

44: contact 45: block

46: eccentric cam 47: leaf spring

Claims (4)

In the door lock which operates the latch bolt 10 and the guard bolt 30 with one lever, and locks and unlocks with the other lever: A latch link 20 which is divided into left and right is provided in double on the coaxial and advances the latch bolt 10 forward and backward; A lock link 40 connected to the other lever to rotate at a predetermined angle and restrain the forward and backward movement of the latch bolt 10; Adjusting means is located on one side of the up and down stroke end according to the rotation angle of the lock link (40), to individually control the rotation of each latch link (20); And And a secondary locking means for restraining the reverse of the latch bolt (10) while the guard bolt (30) is in the reverse position. The method of claim 1, The adjustment means is in contact with the lock link 40 and the latch link 20 through the projection (42a) and the sliding surface (42b) and the up and down movement rod 42, the latch link on the operation rod (42) The double door 45 is installed to be adjacent to the 20, and the eccentric cam 46 is installed to individually adjust the protruding length of each block 45, characterized in that the double door safety lock. The method of claim 2, The actuating rod 42 has a contactor 44 supported by a spring 43 on one surface to securely maintain the position of the upper and lower one end of the double safety door lock. The method of claim 1, The auxiliary lock means has an upper link (35) rotatably installed in a tangent state so as to interlock with the forward and backward movement of the guard bolt (30), and the forward and backward movement of the latch bolt 10 in conjunction with the upper link (35). An intermediate link 26 rotatably installed in a crimped state to restrain or release, and a lower link 25 rotatably installed to release the lock state of the intermediate link 26 in conjunction with the latch link 20. Double door safety door lock characterized in that it comprises.

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