KR101933839B1 - Push and pull type door lock with double latch - Google Patents

Abstract

The present invention relates to a push and pull type door lock in which a latch is operated in a double mode. A latch constituting a latch bolt for the push and pull type door lock is configured to be easily folded when entering and leaving a striker. The latch is configured to pull the latch bolt into the interior of a door lock case by a pulling device when the latch is opened. The push and pull type door lock allows the latch bolt to be easily inserted into and taken out from a latch groove provided in the striker. Also, the push and pull type door lock reduces friction with the striker, thereby implementing smooth opening and closing, operation, reducing noise reduction and maintaining a closed state stably.

Description

[0001] Push and pull type door lock with double latch [

The present invention relates to a push-and-pull type door lock apparatus, and more particularly, to a push and pull type door lock apparatus in which a latch constituting a latch bolt of a door lock is easily bent when it enters and exits a latch groove of a striker, Quot; door " is a double-acting push-and-pull type door lock.

Generally, the latch bolt, which is operated for opening and closing the door, has one side formed as a round portion and the opposite side formed as a facing portion. When the door is closed, the round portion is pushed into the door lock case by pressure and then returned to the striker The latch bolt is inserted into the door lock case by the operation of rotating the knob when the door is opened to open the door by the continuous operation of pushing or pulling the latch bolt.

Recently, as the technology of door lock has developed, a push-and-pull type door lock has been developed which can open and close the door by only pushing the push button or pulling the full lever. The push and pull type door lock is formed by pressing the push button, So that the latch bolt of the door lock enters and exits the latch groove provided in the striker provided in the door frame.

When the door is opened and closed by applying the conventional latch bolt drive device to such a push-and-pull type door lock, there is no structure for pulling the latch bolt into the door lock case when pushing the push button or pulling the full lever. There is a problem in that the function of the latch bolt deteriorates, for example, the possibility that the opening and closing of the door is not smooth or fails is increased.

Particularly, when the door is opened, the frictional force between the latch groove provided in the striker and the latch bolt is increased by the pressing force, so that the latch bolt is not smoothly moved out of the latch groove. Which may interfere with the water surface.

Thus, in the prior art 20-2014-0002186, a striker for a push-and-pull type door lock device having a connecting piece bent at one side when a latch groove provided in a striker is constructed has been disclosed. However, There is a problem that it can not completely solve the disadvantages of friction and hitching.

Korean Published Utility Application No. 20-2014-0002186 (Apr. 17, 2014)

It is an object of the present invention to provide a latch bolt for a push and pull type door lock which can be easily inserted into and removed from a latch groove provided in a striker, By latching into the door lock case, it is possible to reduce the friction and noise of the latch bolt and the latch groove, and to keep the closed state stable while allowing smooth opening and closing, thereby providing a latch capable of smoothly performing push- The object of the present invention is to provide a double-acting push-and-pull type door lock.

In order to achieve the above object, the latch bolt for a push-pull type door lock of the present invention has a groove in which a connecting piece and a spring are inserted in the center of the latch, And the connecting piece and the spring are axially coupled.

When pressure is applied to one side of the latch configured as described above, the latch is bent by the inclination angle of the latch about the rotary shaft pin. When the pressure is removed, the latch is restored to its original position by a spring provided between the latch and the latch.

In addition, a latching groove is formed in one side surface of the latch, and a latching jaw of the latching fastener can be engaged or disengaged from the latching groove. When the latching jaw is caught while the door is closed, When the latch is released from the latching groove by pressing the button or by pulling the full lever, the latch can be turned at a certain angle.

In particular, when the latching jaw of the latch fastener is detached from the latching groove, the projecting piece of the latch fastener pushes the bending portion of the operation member, and the projecting pin formed on the opposite side of the bending portion rotates about the shaft pin of the operation member, The latch bolt is inserted into the interior of the door lock case while the connection rod with the key of the key fastener is moved together with the key fastener.

According to the present invention as described above, when the latch moves in and out of the latch groove provided in the striker, the inclined surface formed on the latch facilitates the engagement and reduces the friction in both directions due to the structural characteristics of the elastic latching latch .

Further, since the operation member and the key fastener are operated by the operation of opening the door by the user, the latch bolt is pulled into the door lock case, thereby preventing the latch from being caught in the latch groove, so that the opening and closing of the door is smooth and the noise can be reduced have.

In addition, when the door is closed, the clearance between the vertical surface of the latch and the latch groove is maintained to be minimum, and the latching jaw of the latch is hooked to the latching groove of the latch so that it is more firmly fixed. So that the original function of the latch bolt can be faithfully performed.

1 is a perspective view of a latch bolt for a push-and-pull type door lock according to the present invention;
2 is an exemplary view showing a state in which a latching jaw of a latch fastener is caught in a latching groove of a latch for a push-and-pull type door lock
Fig. 3 is an operating state diagram showing an operation in which the latch bolt for the push-and-pull type door lock enters the interior of the door lock case
Fig. 4 is an exploded perspective view of the push-and-pull type door lock,
FIG. 5 is a plan view showing a process of releasing the latch from the latch groove when the door is opened.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a push-pull type door lock in which the latches of the present invention are operated in duplicate will be described in detail with reference to the accompanying drawings.

1 to 4, the latch bolt 1 for a push-pull type door lock according to the present invention has a connecting piece 21 formed at the front end of the connecting rod 20 inserted into the insertion groove 15 of the latch 10, So that the latch spring 3 and the latch spring 3 are engaged with each other.

The latch 10 has a shape of a parallelepiped having a pair of inclined surfaces and has an insertion groove 15 in the center thereof for accommodating the connecting piece 21 of the connecting rod 20 and the latch spring 3, The connecting piece 21 of the connecting rod 20 and the latch spring 3 are axially coupled with each other about the rotating shaft pin 14 passing through the insertion groove 15 vertically.

 1, the latching groove 16 and the protrusion 17 are formed on the horizontal surface 11 of the latch 10 and the latching jaw 2-1 of the latching fastener 2 is inserted into the latching groove 16 The latch 10 can not be rotated and is fixed when the latching jaw 2-1 is caught in the latching groove 16. When the push button is pressed or the pull lever is pulled, When the jaw 2-1 comes out of the latching groove 16, the latch 10 is made to be elastic and can be turned by a certain angle.

A connection piece 21 is formed at the tip of the connection rod 20 and inserted into the insertion groove 15 of the latch 10 and fixed together with the latch spring 3 by the rotary shaft pin 14, A groove is formed on one side of the connecting piece 21 so that the latch 10 can be tilted only by an inclination angle of the inclined surface 13 so that the latch 10 is inclined by an angle of inclination and restored by the elasticity of the latch spring 3 when pressure is applied.

A key groove 22 penetrating perpendicularly to the longitudinal direction is formed at the opposite end of the connecting piece 21 so that the key 5-1 formed at the lower end of the key fastener 5 can be inserted and received, 5, the connecting rod 20 can be moved.

A spring 6 is provided between the end of the connecting rod 20 and the door lock case 23 so that the latch bolt 1 is resiliently reciprocated horizontally.

The protruding piece 2-2 formed on the latch fastener 2 is positioned between the operating piece 25 and the bending piece 4-2 of the operating member 4 and is centered on the rotational axis 2-3 of the latch fastener The key bolt 1 is pulled into the door lock case 23 by pushing the operation piece 25 by pushing the bending piece 4-2 by pushing the operation piece 25 by reciprocating a predetermined angle.

' 형상의 절곡편(4-2)이 형성되고 타단부의 일측면에 돌출핀(4-3)이 형성되며, 상기 절곡편(4-2)과 돌출핀(4-3)의 사이에 구비된 축핀(4-1)이 도어락 케이스(23)에 회전가능하게 설치되어 돌출편(2-2)이 절곡편(4-2)을 밀면, 작동부재(4)가 각도회전하고 그로 인하여, 돌출핀(4-3)이 키고정구(5)를 연동시켜 연결로드(20)와 래치(10)로 구성된 래치볼트(1)를 도어락 케이스(23)의 내부로 이동시킬 수 있도록 구성된 것이다.At one end of the operating member 4,

Shaped protrusion pin 4-2 and a protrusion pin 4-2 formed at one side of the other end of the protrusion pin 4-2 and a protrusion pin 4-2 formed between the protrusion pin 4-2 and the protrusion pin 4- The shaft pin 4-1 is rotatably installed in the door lock case 23 so that the projecting piece 2-2 pushes the bending piece 4-2 so that the operation member 4 rotates at an angle, The pin 4-1 is configured to move the latch bolt 1 composed of the connecting rod 20 and the latch 10 to the interior of the door lock case 23 by interlocking the key fastener 5.

Hereinafter, the operation of the push-pull type door lock in which the latch of the present invention configured as described above operates double will be described.

2 and 5, when the door 24 is closed, the latch 10 is engaged with the latch groove 30 and the vertical surface 12 of the latch 10 is engaged with the inner surface of the latch groove 30 Since the latching jaw 2-1 of the latch fastener 2 is caught by the latching groove 16 and the latch 10 can not be rotated and fixed and therefore the user can push the push button or pull the full lever The door 24 can be kept closed without being shaken even if pressure is externally applied.

When the user pushes the push button or pulls the full lever in the state where the door 24 is closed as described above, the operating piece 25 pushes the protruding piece 2-2 of the latch fastener 2, The latch 10 rotates about the rotation axis 2-3 of the latch fastener and the latch jaw 2-1 is released from the latch groove 16 so that the latch 10 can easily be tilted.

The vertical surface 12 of the latch 10 collides with the latch groove 30 by the pressure to open the door 24 and forms a tilting so that the friction with the latch groove 30 is reduced, (See Fig. 5)

3, the latching fixture 2 is rotated so that the latching jaw 2-1 is disengaged from the latching groove 16, and at the same time, the projecting piece 2-2 is disengaged from the bending piece 2-1 of the operation member 4, The operation member 4 is rotated by a certain angle by pushing the protrusion pin 4-2 and the protrusion pin 4-3 formed on the opposite side of the bending piece 4-2 pushes the side surface of the key fixing hole 5. [

The connecting rod 20 in which the key 5-1 is inserted moves together with the key fastener 5 when the key fastener 5 is moved and consequently the latch bolt 1 is moved to the inside of the door lock case 23 It will be pulled.

The operation of pulling the latch bolt 1 into the door lock case 23 at the same time as the operation of pulling the latch 10 together with the latch bolt 1 prevents the latch bolt 1 from being caught in the latch groove 30, So that a smooth operation can be achieved when the latch member is removed from the latch groove.

When the door is closed, the latch bolt 1 is pulled into the door lock case 23 by the action as described above when the push button is pushed or the full lever is pulled. In this state, after the door is closed, The latch 10 is naturally inserted into the latch groove 30 so that the noise generated from the latch when the door 24 is opened and closed can be completely reduced.

1: latch bolt 2: latch fastener
2-1: engaging jaw 2-2: protruding piece
2-3: rotation axis of the latch fastener 3: latch spring
4: operating member 4-1:
4-2: bending piece 4-3: projecting pin
5: Key fastener 5-1: Key
6: Spring
10: latch 11: horizontal plane
12: vertical surface 13: inclined surface
14: rotary shaft pin 15: insertion groove
16: Retaining groove 17:
20: connecting rod 21: connecting piece
22: key groove 23: door lock case
24: Door 30: Latch groove

Claims (3)

The latching grooves 16 and the protrusions 17 are formed on the horizontal surface 11 of the latch 10 so that the latching jaws 2-1 of the latching fasteners 2 can be caught or escaped by the latching grooves 16. [ The latch 10 can not be rotated and is fixed while the latching jaw 2-1 is caught in the latching groove 16. When the latching jaw 2-1 is pressed by pushing the push button or pulling the full lever, The insertion groove 15 of the latch 10 is inserted into the connecting piece 21 formed at the tip of the connecting rod 20 so that the latch 10 can be elastically and tilted by a predetermined angle when the latch 10 is released from the latching groove 16 And is axially coupled with the latch spring 3,
A key groove 22 penetrating perpendicularly to the longitudinal direction is formed in the connecting rod 20 opposite to the connecting piece 21 so that the key 5-1 formed at the lower end of the key fastener 5 is inserted, The latch bolt (1) constituted by the latch and the connecting rod can move according to the movement,
The shaft pin 4-1 provided on the operating member 4 is rotatably mounted on the door lock case 23 so as to move the key fastener 5 and the lower end of the operating member 4 is fixed to the latch fastener 2, And the upper end is brought into close contact with the key fastener 5 so that the operation piece 25 is pushed by the projecting piece 2 of the latch fastener 2 2) and the operating member (4) are operated to enter the latch bolt (1) into the interior of the door lock case (23). 3. The electronic device according to claim 1, wherein the operation member (4)

And a protruding pin (4-3) is formed on one side of the other end of the push-pull type door lock. The push-pull type actuator according to claim 2, wherein the projecting pin (4-3) formed on one side of the actuating member (4) is integrally formed with the actuating member (4) by bending. door lock.

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