WO2012138119A2

WO2012138119A2 - Door lock

Info

Publication number: WO2012138119A2
Application number: PCT/KR2012/002522
Authority: WO
Inventors: 김용혁
Original assignee: Kim Yong Hyeok
Priority date: 2011-04-08
Filing date: 2012-04-04
Publication date: 2012-10-11
Also published as: KR101201649B1; WO2012138119A3; KR20120114920A

Abstract

The present invention relates to a door lock in which a latch bolt and a hook are improved in structure so as to maintain a firmly closed state even if a gap between a door and a door frame is widened and to reduce noise from when the latch bolt collides with a door catcher. The door lock includes: a latch bolt (10) installed on a door (1) and moved forward or backward by a handle, wherein the latch bolt has a sloped surface (11) on one surface thereof; and a door catcher (20) installed on a door frame (2), wherein the door catcher has a hook groove (21) in which the latch bolt (10) is hooked. The latch bolt (10) has a seat groove (12) in the sloped surface (11) thereof. The door catcher (20) includes: a housing (22) having the hook groove (21); a base (24) which can be withdrawn so as to be adjusted within the hook groove (21) of the housing (22); and a hook bundle (26) rotatably installed on the base (24), wherein the hook bundle is hooked in the seat groove (12) of the latch bolt (10) inserted into the hook grove (21).

Description

Door lock

The present invention relates to a door lock, which improves the structure of the latch bolt and the locking mechanism to maintain a secure closed state even when the gap between the door and the door frame, and occurs when the latch bolt collides with the door catcher It also reduces noise, so the door closes silently.

In general, a door lock mounted on a front door or a door to lock a door is equipped with a latch bolt formed with a slope on a mortise inserted into a side of the door, and the latch bolt is connected to a handle mounted on the door to handle the door. When rotated or rotated to one side is inserted into the door and the handle is released to the side of the door, the latch bolt is inserted into the locking groove formed in the door frame in which the door is mounted to support the door in a closed state.

Accordingly, when the handle is rotated or rotated to one side while the door is closed, the latch bolt may be removed from the insertion groove of the door frame and inserted into the door to open the door. At this time, the locking groove circumference of the door frame is provided with a receiving plate to prevent the locking groove from being damaged and to allow the latch bolt to be smoothly inserted into the locking groove, and a door such as a front door is provided between the door and the door frame. Fit a closure to automatically close the door.

Therefore, the door equipped with the door closer is opened or closed by rotating or rotating the handle, the door is automatically closed by the door closer even if the handle is released. In other words, when the handle is released, the door is closed by the door closer while the latch bolt is protruded to the side of the door.When the door is closed, the latch bolt is inserted into the door through the receiving plate and the door is completely closed. It protrudes and is inserted into the locking groove of the door frame.

By the way, when the latch bolt for the door lock closes the door with the latch bolt protruding to the side of the door, the entire slope is inserted into the door while being in contact with the receiving plate, that is, the contact area is wide, so the noise is large. There is a problem that occurs. In particular, when the door is strongly closed or closed by the force of the door closer, the door closes as the slope of the latch bolt and the receiving plate collide strongly, and the impact force is transmitted to other parts connected to the latch bolt, thereby improving the durability of the door lock. There is a problem to drop.

In addition, the gap between the door and the door frame is 2 to 3mm wide to ensure the smooth rotation of the door, but after installation or deformation or other reasons such as distortion or shrinkage of the door or door frame after installation, As a result of the situation that the gap between the gaps is increased, the latch bolts of the doors are not inserted deeply into the door catchers of the door frames, but only slightly hang up, so that the locking function is poor.

The present invention has been made to solve the above problems, an object of the present invention is to improve the structure of the latch bolt and the locking mechanism to maintain a tight closed state even when the gap between the door and the door frame, latch bolt To provide a door lock that can also reduce the noise generated when the impact on the door catcher.

In order to achieve the above object, the present invention includes a latch bolt installed on the door to move forward and backward by a handle and a slope surface formed on one side, and a door catcher provided on the door frame and having a locking groove to which the latch bolt is caught. A door lock made of; The latch bolt is provided with a seating groove or a tooth on the slope surface, and the door catcher is rotatably installed on the base and the base that is removably adjusted in the housing and the locking groove of the housing is provided with the Provided is a door lock made of a latch bundle that is caught in the mounting groove of the latch bolt is inserted into the locking groove or in contact with the teeth.

Preferably, in the present invention, the latch bundle is divided into parts made of a hard material including a metal or a synthetic resin and parts made of a soft material including a silicon or a synthetic rubber to be mutually coupled to prevent noise when contacting the latch bolt. And friction reduction.

The present invention improves the structure of the latch bolt and the latching hole when the gap between the door and the door frame is opened, by using the adjusting bolt to raise the base inside the door catcher housing to the outside, the latch bundle is coupled to the seating groove of the latch bolt It is possible to securely hold the latch bolts in a locked state, and even when the latch bolts collide with the door catcher, the bundles made of synthetic resin first come into contact with each other, thereby reducing the noise, thereby solving the annoying problem. It has a useful effect such as.

1 is a perspective view of an installation state of a door lock according to a first embodiment of the present invention;

2 is an exploded perspective view of the door lock according to the first embodiment of the present invention;

3 is a cross-sectional view of the door catcher of the door lock according to the first embodiment of the present invention;

4 is a cross-sectional view showing a state before the door is closed;

5 is a cross-sectional view showing a state in which the door is closed;

Figure 6 is a perspective view of the installation state of the door lock according to a second embodiment of the present invention,

Figure 7 is an exploded perspective view of the door lock shown in Figure 6,

8 is a cross-sectional view of the door catcher of the door lock according to the second embodiment of the present invention;

9 is a sectional view showing a state before the door is closed;

10 is a cross-sectional view showing a state in which the door is closed.

Hereinafter, with reference to the accompanying drawings, preferred embodiments that do not limit the present invention will be described in detail.

1 to 5 show the structure of the door lock according to the first embodiment of the present invention, the present invention is installed in the door (1) to move forward and backward by the handle not shown and the slope surface 11 on one side In the door lock comprises a latch bolt (10) is formed, and a door catcher (20) provided in the door frame (2) is provided with a latching groove (21) to catch the latch bolt (10); The latch bolt 10 has a seating groove 12 formed on a slope 11 thereof, and the door catcher 20 includes a housing 22 having a catching groove 21 and a catching of the housing 22. A base 24 that is retractably adjusted within the groove 21, and a latch that is caught by the seating groove 12 of the latch bolt 10 that is rotatably installed in the base 24 and inserted into the locking groove 21. It consists of a bundle (26).

In the present invention, the latch bolt 10 installed in the door 1 has a seating groove 12 into which the latch bundle 26 of the door catcher 20 is inserted into the slope 11 of the tip. Since the same structure as the conventional latch bolt, a detailed description thereof will be omitted.

In the present invention, the door catcher 20 installed in the door frame 2 includes a housing 22, a base 24, and a latch 26, as described above. A receiving plate 28 made of steel is further provided.

The receiving plate 28 is used to cover the housing 22 to exert the appearance enhancement function, one side of the receiving plate 28 is formed with a guide surface 29 for the latch 26, the door is When closed, the brace bundle 26 will exert a function of guiding the soft contraction.

In the drawings,

reference numerals

22a and 28a denote screw holes to which the fixing screw S for fastening the door catcher 20 to the door frame 2 is fastened.

The housing 22 has a locking groove 21 is formed on the inner side, the outer edge of the locking groove 21 is formed with an edge portion to be superimposed at the correct position with the receiving plate 28, the An adjustment screw hole 22b into which the adjustment screw S 'for adjusting the depth of the base 24 inserted into the rear of the locking groove 21 of the housing 22 is inserted behind the edge of the locking groove 21. Perforated

Compression coil spring (P) located between the housing 22 and the base 24 is fitted to the adjustment screw (S ') and the base located in the locking groove 21 by adjusting the adjustment screw (S') ( The depth of 24 is adjustable.

In addition, the outer edge of the locking groove 21 is also formed in the square in the rim so that the depth adjustment can be made in the state that the base 24 is prevented from rotating by this rim.

The base 24 is a portion for rotatably seating the latch bundle 26, which is provided with a female screw hole 24b on which the adjustment screw S 'is screwed as described above, and the latch bundle ( The pin hole 24a to which the 26 is rotatably coupled is formed so as to penetrate the side surface, and the stopper 24c is erected vertically above the front to prevent the latch bundle 26 from excessively passing over. .

The latch bundle 26 is coupled to the pin hole 24a of the base 24 by the rotation pin 30, and the rotation pin 30 is provided with a torsion spring 40 so that the latch bundle 26 is provided. The latch bolt 10 is biased toward the bolt bolt 10, and when the latch bolt 10 approaches and pushes the latch 26, the latch bolt 10 is rotated toward the stopper 24c while winning the force of the torsion spring 40. ) Is fitted into the mounting groove 12 of the latch bolt (10).

In the present invention, the latch bundle 26 is preferably made of a hard material including two parts, namely metal or synthetic resin, as can be seen in the exploded perspective view of FIG. The main body 260 and the buffer 264 made of a soft material including silicon or synthetic rubber are divided into a structure that is coupled to each other to prevent noise and reduce friction during the rotation operation.

The main body 260 of the latch bundle 26 has a pivoting portion 262 in which a pin hole 261 into which the pivoting pin 30 is fitted is drilled, and a latching portion 263 protruding from the upper surface of the pivoting portion 262. It consists of a), the latch portion 263 is a part that is caught in the insertion groove 12 of the latch bolt (10).

In addition, the shock absorbing body 264 constituting the latch bundle 26 is composed of a bottom portion 265 and a side portion 266 protruding to the upper surface of the bottom portion 265 during the rotation operation of the latch bundle 26. It reduces noise generated by contact with adjacent parts and absorbs shock.

4 and 5, the latch lock 10 protrudes outward from the door 1 when the door 1 is open, as shown in FIGS. 4 and 5. The latch bundle 26 of the door catcher 20 installed in the inclined forward direction toward the latch bolt 10 side.

When the door 1 is closed in such a state, the latch bundle 26 is in contact with the latch bolt 10 and the latch bundle 26 is primarily a locking groove of the door catcher 20 mounted on the door frame 2. 21, the first locking is made, and at the same time, the latching portion 263 of the latch 26 is inserted into the insertion groove 12 formed in the slope surface 11 of the latch bolt 10 so that 2 Car locking is achieved.

Therefore, even when the distance between the door 1 and the door frame 2 is widened, the door 1 can be kept in a firm closed state, and unintentional arbitrary opening becomes difficult.

On the other hand, in the present invention, it is possible to adjust the degree of protrusion of the latch bundle 26 is protruded by using the adjustment screw (S ') is to adjust the appropriate degree of protrusion according to the distance between the door (1) and the door frame (2).

6 to 10 are shown the door lock according to the second embodiment of the present invention, in this embodiment is installed in the door 1 to move forward and backward by the handle not shown and the slope surface 11 on one side In the door lock comprises a latch bolt (10) is formed, and a door catcher (20) provided in the door frame (2) is provided with a latching groove (21) to catch the latch bolt (10); The latch bolt 10 is formed on the slope surface 11 of the teeth 12a of the same shape as the gear of the spur gear, the door catcher 20 is a housing 22 having a locking groove 21, The base 24 which is retractably adjusted in the locking groove 21 of the housing 22 and rotatably installed in the base 24 and inserted into the locking groove 21 are provided with the teeth of the latch bolt 10. It consists of a latch bundle 26 caught by 12a.

The door lock of the present embodiment is also the same basic principle as the first embodiment shown in Figures 1 to 5, the structure is also not very different, only the specific form of each component is different.

This will be described in detail below.

In the present embodiment, the door catcher 20 installed in the door frame 2 includes a housing 22, a base 24, and a latch 26, as described above. A receiving plate 28 made of stainless steel is further provided.

In this embodiment, since the shape of the housing 22 is the same as that of the first embodiment, overlapping description is omitted.

The base 24 is a part for rotatably seating the latch bundle 26, which is provided with a female screw hole 24b to which the adjustment screw S 'is screwed on the front surface, and the latch bundle 26 is rotated. The pinhole 24a, which is possibly coupled, is formed to penetrate the side surface.

The latch bundle 26 is coupled to the pin hole 24a of the base 24 by the rotation pin 30, and the rotation pin 30 is provided with a torsion spring 40 so that the latch bundle 26 is provided. The latch bolt 10 is biased toward the bolt bolt 10, and when the latch bolt 10 approaches and pushes the latch 26, the latch bolt 10 is rotated toward the stopper 24c while winning the force of the torsion spring 40. ) Abuts against the teeth 12a of the latch bolt 10.

In the present embodiment, as shown in the exploded perspective view of FIG. 7 and the cross-sectional view showing the combined state of FIG. 8, the latch 26 is made of a rigid material including two components, that is, a metal or a synthetic resin ( 260 and a buffer body 264 made of a soft material including silicon or synthetic rubber are divided to be coupled to each other to prevent noise and reduce friction during the rotation operation.

The main body 260 of the latch bundle 26 is bored with a pin hole 261 into which the pivot pin 30 is fitted, and the buffer 264 has a bottom portion 265 and a bottom portion 265. It consists of a locking portion (266a) protruding to the upper surface to reduce noise and absorb shock when contacting the teeth (12a) dl of the latch bolt 10 to the locking portion (266a) during the rotation operation of the latch bundle (26) It will play a role.

The main body 260 and the buffer 264 are integrally coupled by a fixing screw (not shown), and the coupling protrusion and the coupling groove are formed at positions corresponding to each other to increase the coupling force.

The door lock of the present embodiment is also not significantly different from the operating state of the first embodiment, as shown in FIGS. 9 and 10, the latch bolt 10 protrudes out of the door 1 when the door 1 is opened. And the latch bundle 26 of the door catcher 20 installed on the door frame 2 side is in a forward bowed state toward the latch bolt 10 side.

Meanwhile, when the door 1 is closed, the latch bundle 26 is in contact with the latch bolt 10 and the latch bundle 10 is firstly caught by the door catcher 20 of the door catcher 20 mounted on the door frame 2. The first locking that is applied to the lock is made, and at the same time, the latch portion 263 of the latch bundle 26 inside the door catcher 20 is inserted into the teeth 12a formed on the slope surface 11 of the latch bolt 10. The second locking is achieved by being caught.

Therefore, even when the distance between the door 1 and the door frame 2 is widened, the door 1 can be kept in a firm closed state, and arbitrary opening becomes difficult.

Claims

A door lock comprising a latch bolt installed on the door and moving forward and backward by a handle, the latch bolt having a slope surface formed on one side thereof, and a door catcher provided on the door frame and having a locking groove to which the latch bolt is caught;

The latch bolt 10 has a seating groove 12 is formed on the slope surface 11,

The door catcher 20 is rotated to a housing 22 having a catching groove 21, a base 24 that is retractably adjustable within the catching groove 21 of the housing 22, and the base 24. The door lock, characterized in that it comprises a latch bundle (26) which is installed to be possible and caught in the seating groove (12) of the latch bolt 10 is inserted into the locking groove (21).
A door lock comprising a latch bolt installed on the door and moving forward and backward by a handle, the latch bolt having a slope surface formed on one side thereof, and a door catcher provided on the door frame and having a locking groove to which the latch bolt is caught;

The latch bolt 10 is a tooth 12a is formed on the slope surface 11,

The door catcher 20 is rotated to a housing 22 having a catching groove 21, a base 24 that is retractably adjustable within the catching groove 21 of the housing 22, and the base 24. The door lock is characterized in that it comprises a latch bundle (26) which is installed to be possible and in contact with the teeth 12a of the latch bolt 10 is inserted into the locking groove (21).
The method according to claim 1 or 2,

The housing 22 has an adjustment screw hole 22b formed therein, and the base 24 has a female screw hole 24b screwed with the adjustment screw S 'inserted through the adjustment screw hole 22b. Compression coil spring (P) located between the housing 22 and the base 24 is fitted to the adjustment screw (S ') is located in the locking groove 21 by adjusting the adjustment screw (S'). Door lock, characterized in that the depth of the base 24 can be adjusted.
The method according to claim 1 or 2,

The base 24 is connected to the pivot pin 26 by the pivot pin 30 to be rotatable. The torsion spring 40 is fitted to the pivot pin 30 so that the latch bolt 26 is latched to the latch bolt 10 side. A door lock, characterized in that it is deflected toward.
The method according to claim 3,

The clasp 26 is divided into a part made of a hard material including a metal or a synthetic resin and a part made of a soft material including a silicone or a synthetic rubber, and are mutually combined to prevent noise and reduce friction during operation. A door lock, characterized in that enabled.