KR20140125554A - Locking assembly for latch bolt - Google Patents

Abstract

Disclosed is a locking assembly for a latch bolt, which interworks with an edge bolt and smoothly works with a small force. The present invention relates to a locking assembly for a latch bolt, which releases the locking state of the latch bolt when the edge bolt is pressed. The locking assembly includes an interworking lever which is pivoted when the edge bolt is inserted; and a fixing lever which interworks with the pivoting of the interworking lever to rotate to one side and is separated from the fixing position of the end of the latch bolt.

Description

[0001] The present invention relates to a latching bolt,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a fastening structure for a latch bolt, and more particularly, to a fastening structure for a latch bolt that can smoothly operate even with a small force and is configured to be interlocked with an edge bolt.

A typical door lock includes a latch bolt which protrudes and comes into the side of the door by operating a rotating means such as a lever. The latch bolt is a means for preventing the door from being automatically opened, and is not a means for locking and unlocking. A mortise lock having a lock structure by a latch bolt and a dead bolt has been developed and used by providing a dead bolt that is locked and released by a knob or grip in order to solve the unstable situation of only the latch bolt .

Conventionally, a digital door lock having a 'panic function', which provides convenience by simultaneously opening the latch bolt and the dead bolt when the internal lever is operated when leaving the room, is disclosed.

However, in the digital door lock which performs the conventional panic function, when releasing the latch bolt and the dead bolt at the same time, a large amount of force is required because the motor engaged with the dead bolt must be returned.

In addition, in the conventional digital door lock, there is a problem in that the structure for fixing the latch bolt is complicated, and there is no consideration of interlocking of the latch bolt and the edge bolt, so that the operation performance is lowered overall and the operation reliability is lowered.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a latch bolt fastening structure capable of smoothly securing and releasing a latch bolt by a small force and interlocking with an edge bolt, .

According to an aspect of the present invention, there is provided a fixing structure for a latch bolt, the latch bolt being configured to be released from a locked state when the edge bolt is pressed, the interlock lever being pivoted when the edge bolt is retracted; And a fixed lever interlocked with the pivotal movement of the interlocking lever and rotated to one side to be separated from a fixed position of a distal end of the latch bolt.

The fixing lever may include a roller portion for supporting a distal end of the latch bolt.

And a second end connected to the operating piece of the lever actuating body provided on the main body of the motor, wherein the first end of the lever is rotatably pivoted by a predetermined radius, .

The interlocking lever is configured such that a first end thereof is connected to the edge bolt with a rotation axis as a starting point and a second end thereof is connected to the fixed lever from the rotation axis as a starting point and a guide hole for limiting the swing range of the interlocking lever is formed .

According to another aspect of the present invention, there is provided a latch bolt fixing structure configured to release a locked state of a latch bolt when an edge bolt is depressed, the latch bolt being fixed to the inside of the mothis main body and pivotable about a rotation axis, ; And a fixing member which is provided to pivot around a rotation axis in the inside of the mothis body and is connected to a distal end of the interlocking lever so as to be rotated together with the interlocking lever when the interlocking lever is turned, There is provided a fixing structure for a latch bolt comprising a lever.

According to another aspect of the present invention, there is provided a latch bolt fixing structure configured to release a locked state of a latch bolt when an edge bolt is pressed, wherein a part of the latch bolt is interlocked with the edge bolt, And another part of which is provided with a fixing lever which is interlocked to support the end of the latch bolt.

The fixing lever may include a roller portion for supporting a distal end of the latch bolt.

      And an interlocking lever pivotally coupled to the edge bolt when the edge bolt is pulled into the inside of the main body, so that the fixing lever can be interlocked with the pivoting of the interlocking lever.

According to the present invention, by adopting the roller type fixing lever, the latch bolt can be smoothly fixed and released by a small force, and the latch bolt can be pulled up by lifting the fixing lever in a state where the edge bolt is protruded It is possible to expect an improvement in operation reliability through interlocking with the edge bolt.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view showing an inner configuration of a mortis to which a fixing structure of a latch bolt according to an embodiment of the present invention is applied;
FIG. 2 is a perspective view showing an internal configuration of a mortis to which a fixing structure for a latch bolt according to an embodiment of the present invention is applied;
FIG. 3 is a schematic view showing components of a fixing structure of a latch bolt according to an embodiment of the present invention;
FIG. 4 is a state diagram showing an initial state of a motis to which a fixing structure of a latch bolt is applied according to an embodiment of the present invention;
5 is a state view showing a state where the edge bolt of the Mortis to which the fixing structure of the latch bolt is applied according to the embodiment of the present invention is pressed (pressed by the door frame when the door is closed)
6 is a state view showing the state of the latch bolt fixing structure in a state in which the door is completely closed in the state of Fig. 5, and Fig.
Fig. 7 is an operational state diagram for releasing the fixed state of the latch bolt fixing structure in the state of Fig. 6;

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 to 3, the present invention includes an edge bolt 20, a latch bolt 30, a dead bolt 40, a lever actuating body 50, a drive lever 60, and a motor (not shown) 70 may be provided inside the conventional Motice.

Specifically, the edge bolt 20 is elastically supported by a spring S (FIG. 4) so as to be protruded to the outside of the main body 10 when the door is opened or closed. The interlocking lever 90 is connected to the edge bolt 20 so that the interlocking lever 90 is pivoted about the rotation axis 91 in accordance with the linear movement of the edge bolt 20.

3, the first end 93 of the interlocking lever 90 is connected to the edge bolt 20 with the rotation axis 91 as a center, and the interlocking lever 90 is interlocked with the edge bolt 20 by linear movement . The second lower end 94 of the interlocking lever 90 is positioned so as to interfere with the first end 83 of the fixed lever 80 about the rotation axis 91 of the interlocking lever 90. The interlocking lever 90 is pivoted on the basis of the rotation axis 91 and the second end 94 of the interlocking lever 90 is pivoted by the linear movement of the edge bolt 20, And is configured to be pivoted on the basis of the rotating shaft 82.

More specifically, the fixed lever 80 is formed with a first end 83 on the upper side with respect to the rotary shaft 82, a second end 84 on the side, and a third end 85 on the lower end do. A roller portion 81 is formed at the front and is selectively positioned at the end of the operating bar 33 of the latch bolt 30. [ In other words, in a normal state, the fixing lever is configured such that the roller portion 81 is directed in the forward direction by the spring. On the other hand, the fixing lever 80 may have a configuration in which the roller portion 81 is mounted on the front side and the operation pieces having the same shape on both sides are disposed on both sides.

When the fixing lever 80 is turned (turned clockwise) to the upper side, the roller portion 81 is lifted at the end of the operating bar 33, so that the fixed state of the latch bolt 30 can be disassembled, The operation bar 33 can be retracted into the space between the fixing levers 80 when the latch bolt 30 is pulled into the inside of the motice body 10 (refer to FIG. 5).

4, the edge bolt 20 protrudes from the initial position (door open state), and the interlocking lever 90 is in a state in which the first end 83 of the fixed lever 80 is lifted up So that the latch bolt 30 can be pulled in (toward the main body of the motor).

4, the edge bolt 20 is composed of an edge head 21 exposed to the outside and a slide bar 22 connected to the edge head 21, and the slide bar 22 is supported by a spring S The slide bar 22 is formed with a fixing jaw 23 at the middle thereof and the first end 93 of the interlocking lever 90 is abutted against the fixing jaw 23. The slide bar 22 is moved and the first end 93 of the interlocking lever 90 connected to the fixing jaw 23 of the slide bar 22 is moved, (90) is turned in the clockwise direction, the fixed lever (80) is pivoted (rotated backward) counterclockwise by the spring force. As a result, the roller portion 81 of the fixed lever 80 is lowered to be engaged with the end of the actuating bar 33 (see FIG. 2).

In other words, since the edge bolt 20 is retracted, the interlocking lever 90 is released from lifting the first end 83 of the securing lever 80, and the securing lever 80 is restored to the original state The roller portion 81 can be placed on the operation bar of the latch bolt 30. [ The roller portion 81 of the fixing lever 80 is supported by the end of the actuating bar 33 of the latch bolt 30 in a state in which the latch bolt 30 is projected to the outside of the main body 10 It is possible to prevent the latch bolt 30 from being drawn in.

At this time, a guide hole 92 is formed in the second end 94 of the interlocking lever 90 by a predetermined length to limit the turning width of the interlocking lever 90. That is, the bolt 95 is fastened to the guide hole 92 of the interlocking lever 90, so that the turning width of the interlocking lever 90 can be limited.

3, the latch bolt 30 may be a double latch type in which the first latch 31 and the second latch 32 are vertically rotated in one direction. As a result, the door is rotated in the direction of opening and closing so that the operation bar 33 is pulled into the inside of the main body 10 (actuation against the spring force).

As shown in FIG. 2, the latch bolt 30 is configured to be pulled into the inside of the main body 10 only when an external force is applied to the elastic body such as a torsion spring (FIG. 2). In addition, the fixing lever 80 is installed so as to be rotatable about the rotary shaft 82, and can be applied to the torsion spring such that the fixing lever 80 is rotated in the clockwise direction and returned to the original state (rotated counterclockwise by the restoring force of the spring). In other words, in the free state, an external force (rotation of the actuating piece of the lever actuating body as shown in Figs. 5 and 7), in which the roller portion 81 is positioned forward and the roller portion 81 is forcibly rotated, The fixed lever 80 can be rotated in a clockwise direction against the spring force.

Hereinafter, an operation state of the fixing structure of the latch bolt of the present invention having the above-described structure will be described in detail with reference to the drawings.

4, the edge head 21 of the edge bolt 20 protrudes outward in a state in which the edge bolt 20 is not pressed (door open state). In addition, the interlocking lever 90 also has a state in which the fixing lever 80 is lifted (the roller portion of the fixing lever is out of the end of the latch bolt).

On the other hand, when the edge bolt 20 and the latch bolt 30 are pressed in the state of FIG. 4 (when the door is closed), the latch bolt 30 is pulled into the inside of the fixed lever 80 as shown in FIG. (30) is drawn into the inside of the main body (10). At this time, the edge bolt 20 is pulled by the door frame so that the interlocking lever 90 is rotated clockwise so that the interlocking lever 90 lifts the fixed lever 80 as shown in FIG. 4 The fixing lever 80 is pivoted counterclockwise). On the other hand, in this state (the state shown in FIG. 5), the interlocking lever 90 is released from the state of tight contact with the fixed lever 80, so that a slight free flow is possible.

6, the latch bolt 30 in the retracted state protrudes forward from the lower portion of the roller portion 81 and is inserted into the insertion groove of the striker 100 . The fixed lever 80 is pivoted in the counterclockwise direction by the restoring force of the spring so as to be in a state of being seated (supported) at the end of the actuating bar 33 of the latch bolt 30. Thus, the latch bolt 30 can be fixed in the inserted state in the insertion groove of the striker 100 (the latch bolt can be locked independently of the fixed state of the dead bolt).

When the door is to be opened in this state, the handle shaft 50 (not shown) connected to the lever operating body 50 is rotated to rotate the lever operating body 50 in the clockwise direction, The second end 84 of the fixed lever 80 connected to the second lever 51 is rotated in the clockwise direction so that the roller portion 81 of the fixed lever 80 is rotated upwardly, .

As the fixed lever 80 is turned clockwise in this way, the fixed state of the latch bolt 30 can be released so that the latch bolt 30 is moved in the direction of opening of the door by the first latch 31 and the second The latch 32 is pivoted and can be pulled into the inside of the main body 10.

As described above, according to the present invention, when the edge bolt 20 is drawn out (the door is opened), the interlocking lever 90 is lifted up the fixed lever 80 so that the latch bolt 30 can be pulled in When the edge bolt 20 is retracted, the state of lifting the fixed lever 80 is canceled and the fixed lever 80 is turned counterclockwise by the restoring force of the spring so that the end of the latch bolt 30 The retaining state of the latch bolt 30 can be maintained.

While the present invention has been particularly shown and described with reference to the particular embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.

10: Mortise body 20: Edge bolt
30: latch bolt 40: dead bolt
50: lever operating body 60: drive lever
70: Motor 80: Fixing lever
90: Interlocking lever 100: Striker

Claims (8)

And the latch bolt (30) is released from the fixed state when the edge bolt (20) is pressed,
An interlocking lever 90 pivoted when the edge bolt 20 is retracted; And
And a fixing lever (80) interlocked with the rotation of the interlocking lever (90) and rotated to one side to be detached from the fixing position of the end of the latch bolt (30). The method according to claim 1,
Wherein the fixing lever (80) comprises a roller portion (81) for supporting a distal end of the latch bolt (30). 3. The method of claim 2,
The fixing lever 80 is formed with a rotation shaft 82 so as to be pivoted at a predetermined radius,
A first end 83 connected to the end of the interlocking lever 90 with the rotation shaft 82 as a starting point,
And a second end (84) connected to the operating piece (51) of the lever operating body (50) provided on the mothis body (10). The method according to claim 1,
The interlocking lever 90 has a first end 93 connected to the edge bolt 20 starting from a rotation axis 91 and a second end 94 extending from the rotation axis 91 to the fixed lever 80), and a guide hole (92) for limiting the swing range of the interlocking lever (90) is formed. And the latch bolt (30) is released from the fixed state when the edge bolt (20) is pressed,
An interlocking lever 90 pivotally mounted on the rotation shaft 91 in the inside of the mothis body 10 and pivoted when the edge bolt 20 is retracted; And
And is rotatably connected to the end of the interlocking lever 90 so that the interlocking lever 90 is interlocked and rotated when the interlocking lever 90 is pivoted, And a fixing lever (80) located at a position deviating from a position for supporting the distal end of the latch bolt (30). And the latch bolt (30) is released from the fixed state when the edge bolt (20) is pressed,
A part of which is interlocked with the edge bolt 20 and is provided so as to be pivotable about the rotation axis 82 in the inside of the mothis body 10 and the other part is fixed to be interlocked to support the end of the latch bolt 30 And a lever (80). The method according to claim 6,
Wherein the fixing lever (80) comprises a roller portion (81) for supporting a distal end of the latch bolt (30). The method according to claim 6,
And an interlocking lever (90) pivotally coupled to the edge bolt (20) when the edge bolt (20) is drawn into the inside of the mothis body (10)
And the fixing lever (80) is interlocked with the rotation of the interlocking lever (90).

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