KR102635151B1 - A door lock having a direction change function of a latch bolt - Google Patents

Abstract

The present invention relates to a door lock with a latch bolt direction change function that can be selectively installed universally in both directions without being limited to any specific direction, and more specifically, an inclined surface (11a) on one side to be thickened toward the rear. This formed head 11, a neck 12 that extends to the rear of the head 11 and has a circular cross-sectional axis narrower than the head 11, with planes 12a formed on both sides, A latch bolt (10) formed at the rear end of the neck (12) and composed of a locking portion (13) with a width greater than that of the neck (12); and a latch bolt (10) that is open on one side and penetrates front and rear, so that the neck (12') ) is inserted and is formed with a receiving groove 22 of a size where the locking portion 13 is caught, and a side plate 23 extending rearward from both ends of the front plate 21. It is characterized in that it includes a bracket 20; and a compression spring 30 that accommodates the neck 12 and is interposed between the head 11 and the front plate 21.

Description

A door lock having a direction change function of a latch bolt}

The present invention relates to a door lock equipped with a latch bolt direction change function that contributes to the locking function of a swing door. More specifically, a latch bolt direction change function that is not limited to any specific direction but can be selectively installed universally in both directions. This relates to a door lock with functions.

A swing door is divided into an outer door and an inner door depending on the direction in which the door opens.

Outward-swinging doors are used at the exits of buildings such as offices or apartments where people gather to enable quick evacuation in dangerous situations such as fire, and in-swinging doors are used in each room and bathroom in a home to protect privacy and utilize living space.

The above swing doors are equipped with a door lock that functions as a lock, and these door locks generally consist of a handle placed at the front and rear of the swing door and a latch bolt that enters and exits from the side of the swing door by rotating the handle forward and backward.

The above latch bolt consists of a head with an inclined surface on one side and a flat surface on the other side, and the inclined surface is located in the direction in which the door is closed. When the door is closed, if you push the handle without turning it, the latch bolt moves down the inclined surface and goes inside the door lock. As you enter, the door closes.

Therefore, when manufacturing and constructing a swing door, there is the inconvenience of having to prepare a separate door lock depending on the direction in which the door opens. As a related prior art to improve the above problem, Republic of Korea Patent Publication No. 10-2006-0113227 A “door lock back set capable of changing direction” is disclosed.

This technology proposes a structure that changes the direction of the latch bolt by pulling it out from the latch bolt hole in the front cover and rotating it, and the support bracket has a through groove open at one end, and the shaft is inserted into the through groove. The direction of the latch bolt changes as it rotates.

At this time, the shaft has a structure that can deviate out of the through groove, and the latch bolt has a structure that lacks stable direction change.

In addition, the reciprocating pin must be advanced to the stage before the latch bolt is pulled out from the latch bolt hole of the front cover to release the slide pin from being in close contact with the contact surface of the drive lever. Therefore, there is an inconvenience in that the swing door must be disassembled in order to change the direction of the latch bolt after the door lock is installed inside the swing door.

As an example of other prior art related to the above, Republic of Korea Patent No. 10-0907641 discloses “mortise locking device with a latch bolt that can be reversed in the installed state.”

The technology includes a stopper having a corresponding engaging body corresponding to the engaging body of the latch bolt so that the corresponding connecting portion of the interior body and the advancing and retracting body in the latch bolt is limited by the restraining means; and a latch release means that releases the latch bolt and the stopper's corresponding latch body and is provided on the exposed side of the housing and includes a through hole connected to the stopper.

By inserting a bar into the hole and pressurizing the stopper, the latch bolt is configured to leave the flange and then change the direction of the inclined surface of the latch bolt.

According to this, in the above prior art, there is an inconvenience in that the worker must carry a rod that can be inserted into the hole in order to change the direction of the inclined surface of the latch bolt, and there is a factor in increasing the manufacturing cost related to the configuration of the stopper.

And a typical door lock consists of a latch bolt (10') that enters and exits from the side of the door according to the forward/backward rotation of a handle disposed at the front and rear of the door, and a bracket (20') in which the latch bolt (10') is accommodated.

Figure 1 is a perspective and exploded view of the latch bolt, bracket, and compression spring of a conventional door lock. Referring to Figure 1, the structure in which the latch bolt 10' is coupled to the bracket 20' is as follows.

The latch bolt 10' has a head 11' with an inclined surface 11a' formed on one side, extends to the rear of the head 11', and has a narrower width than the head 11'. An axial neck 12' is formed, and the rear end of the neck 12' has a width greater than that of the neck 12', so that a locking portion 13' that is caught in the receiving groove 22', which will be described later, is formed at the rear end of the neck 12'. It is composed.

The bracket 20' is opened laterally in a vertically standing state and penetrates front and rear, so that the front plate 21' is formed with a receiving groove 22' into which the neck 12' is inserted, and the front plate 21' is formed. Side plates 23' extend rearward from both ends of the shield 21'. In addition, a flange 26' protrudes forward from the front plate 21' at a side end corresponding to the receiving groove 22', thereby reinforcing the strength of the front plate 21'. That is, the front plate 21' is configured to prevent bending.

In addition, a C-shaped washer (W) fitted to the head (11') is configured, and a compression spring ( 30') is constructed.

Accordingly, when the compression spring 30' is in its natural state, the latch bolt 10' is advanced and is prevented from being caught in the receiving groove 22' by the locking portion 13'. In this state, when the latch bolt 10' is pressed backward, the compression spring 30' is compressed and the latch bolt 10' moves backward.

In addition, since the open side of the washer (W) faces the flange (26') as shown in FIG. 1, when the washer (W) is compressed by the compression spring (30'), it is placed on the front of the front plate (21'). It becomes closely attached. Accordingly, the phenomenon of the latch bolt 10' being separated from the open side of the receiving groove 22' is prevented.

According to the above background technology, there were the following problems.

First, since the flange 26' is formed at the side end of the front plate 21', the volume of the bracket 20' increases, and a C-type washer is used to prevent the latch bolt 10' from being separated. Since (W) is further configured, there is a problem in that the material cost increases compared to the present invention and the manufacturing cost increases.

Second, with the neck 12' inserted into the compression spring 30', a C-shaped washer W is inserted into the neck 12' between the locking portion 13' and the compression spring 30'. When the neck 12' at the rear of the washer W is inserted into the receiving groove 22' while the compression spring 30' is compressed by pushing the neck 12' forward, the washer (W ) occurred, making assembly difficult.

Third, the bracket 20' has the front plate 21' and the side plate 23' spread out in a plate shape, and the side plate 23' is bent backwards to the rear of the front plate 21' by the mold. . However, since the flange 26' is bent toward the front of the front plate 21', the side plate 23' has to be bent backward and then bent forward through another mold, making manufacturing inconvenient. .

Due to these problems, productivity was low compared to the main hospital.

Republic of Korea Patent Publication No. 10-2006-0113227 “Door lock back set capable of changing direction” Republic of Korea Patent No. 10-0907641 “Mortis locking device with a latch bolt that can be reversed in the installed state”

The present invention was created to actively solve the above-mentioned problems, and provides a 'latch bolt direction change function' in which the direction of the slope of the latch bolt can be adjusted without disassembling the swing door when the door lock is assembled inside the swing door. The main problem is to provide ‘equipped door locks’.

In addition, another problem to be solved is to reduce the increase in manufacturing cost of the 'door lock with latch bolt direction changing function' proposed by the present invention compared to the prior art by efficiently constructing a structure for assembling the latch bolt direction. .

In order to achieve the above-mentioned problem, the configuration of the door lock with a latch bolt direction change function proposed in the present invention is as follows.

A door lock equipped with a latch bolt direction change function of the present invention includes a head 11 on one side of which an inclined surface 11a is formed to thicken toward the rear, and the head 11 extends to the rear of the head 11. ) a neck 12 having flat surfaces 12a formed on both sides as an axis with a circular cross-section narrower than that of ), and a locking portion formed at the rear end of the neck 12 and having a width greater than that of the neck 12. A latch bolt (10) consisting of (13); and a front plate that is open on one side and penetrates front and rear, so that the neck (12) is inserted, and a receiving groove (22) of a size where the locking portion (13) hangs is formed. (21) and a bracket (20) consisting of side plates (23) extending rearwardly from both ends of the front plate (21); and the neck (12) is accommodated therein and the head (11) and the front plate Including a compression spring (30) interposed between (21),

The receiving groove 22 is smaller than the width V of the neck 12 and has an inlet 22a formed larger than the thickness T, which is the distance from the plane 12a on one opposing side to the plane 12a on the other side. is formed and connected to the inlet 22a, and is characterized in that an expansion portion 22b is formed to be wider than the inlet 22a and accommodates the neck 12.

In addition, a reinforcing groove 24 is formed on one of the front or rear sides of the front plate 21 and is concave on the opposite side of the inlet 22a, and a reinforcing protrusion 25 is formed on the opposite side.

In addition, a case 40 that accommodates the latch bolt 10, the bracket 20, and the compression spring 30 and is divided into left and right sides so that it can be disassembled and assembled; and one side of the case is configured to be disassembled and assembled, and the latch bolt The first plate 50 is formed with a plurality of first square holes 51 through which the head 11 of (10) can enter and exit, and a plurality of circular first holes 52 for fixing it with a bolt to one side of the casement door. ); and is configured to be attachable and detachable from one side of the first plate 50, so that when the second plate 60 is attached to one side of the first plate 50, it surrounds the edge of the head 11. It includes a second plate 60 on which a second square hole 61 is formed so that the head 11 cannot rotate and the direction of the inclined surface 11a is maintained,

When the second plate 60 is not attached to the first plate 50, the head 11 of the latch bolt 10 is completely exposed outside the first plate 50, so that the head 11 It is characterized in that the user can set the direction in which the inclined surface 11a faces by turning.

In addition, when the second plate 60 is attached to one surface of the first plate 50, the second plate 60 has a second hole 62 at the same position as the first hole 52. is formed, the second hole 62 has a smaller diameter size than the first hole 52, and one surface of the second hole 62 has a protruding end that can be accommodated on the inner peripheral surface of the first hole 52. 63) is formed so that when the second plate 60 is attached to the first plate 50, the protruding end 63 is guided to be inserted into the first hole 52.

In addition, the first plate 50 is made of a metal material, and a portion of the second plate 60 is made of a magnetic material.

In the present invention, a detachable second plate 60 is provided on one side of the first plate 50, and when the second plate 60 is not attached to the first plate 50, the latch bolt 10 The head 11 is completely exposed to the outside of the first plate 50 so that the user can set the direction in which the inclined surface 11a of the head 11 is facing by turning the latch of the present invention. Even when a door lock equipped with a bolt direction change function is assembled to a hinged door, the latch bolt 10 can be rotated 180 degrees, making it easy to adjust the locking direction of the latch bolt 10 according to the door opening direction.

In addition, the main component for changing the direction of the latch bolt 10 is the second plate 60, which is detachable from the first plate 50, and has the advantage of reducing the increase in production cost compared to conventional technology. There is.

In addition, a C-type washer is not required and a separate flange is not required for the strength of the front plate 21. Therefore, the number and volume of parts can be reduced, and thus the manufacturing cost can be lowered compared to the background technology.

In addition, when assembling the latch bolt 10 to the bracket 20, in a state in which the compression spring 30 is pushed forward, the flat surfaces 12a on both sides of the neck 12 are in the receiving groove 22. When the latch bolt 10 is turned after passing it so that it faces the inlet 22a, the inlet 22a prevents the neck 12 from coming off, thus eliminating the inconvenience of the washer coming off during the assembly process as in the background technology. You can. In other words, easier and faster combination is possible compared to background technology.

also. The bracket 20 has the front plate 21 and the side plate 23 spread out in a plate shape, and the side plate 23 is bent backwards to the rear of the front plate 21 by the mold. The reinforcement groove 24 and the reinforcement protrusion 25 can be formed at the same time. Therefore, since the process of folding the flange forward again while bending the side plate 23 backward in the background technology can be omitted, the product can be completed with fewer processes than in the background technology.

Figure 1 is a perspective view and exploded view of the latch bolt, bracket, and compression spring of a conventional door lock.
Figure 2 is a perspective view of a door lock equipped with a latch bolt direction change function constructed according to a preferred embodiment of the present invention.
Figure 3 is a flowchart showing the cross section of A-A' in Figure 2 and the assembly process of the latch bolt and bracket.
Figure 4 is a perspective view of the bracket presented by the present invention and a cross-sectional view of the reinforcing protrusion.
Figure 5 is a perspective view and an exploded view of a case 40 and a first plate 50 and a second plate 60 according to another embodiment.
Figure 6 is a flow chart showing the process of changing the direction of the latch bolt by 180 degrees in the embodiment of Figure 5.
Figure 7 is a perspective view and cross-sectional view showing the coupling relationship between the first plate and the second plate.

Hereinafter, the configuration of the present invention and its operations and effects will be described collectively with reference to the accompanying drawings.

The advantages and features of the present invention and methods for achieving them will become clear by referring to the embodiments described in detail below along with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, and may be implemented in various different forms. The present embodiments are merely provided to ensure that the disclosure of the present invention is complete, and are provided by those skilled in the art in the technical field to which the present invention pertains. It is provided to fully inform those who have the scope of the invention, and the present invention is only defined by the scope of the claims. In addition, the same reference numerals refer to the same elements throughout the specification.

The door lock equipped with a latch bolt direction change function of the present invention is comprised of a latch bolt 10 that opens and closes the hinged door, as shown in FIGS. 2 to 4, and a bracket (10) that supports the latch bolt 10 to reciprocate. 20). In the present invention, the combined structure of the latch bolt 10 and the bracket 20 is configured to enable easy assembly and reduce material costs compared to the background technology, so that productivity is improved.

For this purpose, the latch bolt 10 is configured as follows.

A head 11 is formed with an inclined surface 11a on one side, and an axial neck 12 that extends rearward of the head 11 is narrower than the head 11. (12) has a circular cross-section and has planes 12a formed on both sides. At this time, the inclined surface 11a is formed on the same side as either of the two planes 12a, and the inclined direction is determined so that the head 11 becomes thicker toward the rear. Therefore, when closing the swing door due to the inclined surface 11a, it is possible to close it by simply pushing it without turning the handle. Since these matters are known to anyone skilled in the art, detailed explanations will be omitted. In addition, a locking portion 13 is formed at the rear end of the neck 12 and has a wider width than the neck 12.

For the above features, the bracket 20 is configured as follows.

The bracket 20 is open on one side and penetrates front and rear, so that the neck 12 is inserted, and includes a front plate 21 having a receiving groove 22 of a size where the locking portion 13 is caught, and the front plate. It consists of side plates (23) extending rearward from both ends of (21).

Looking at the configuration of the receiving groove 22 with Figure 3, it is as follows.

An inlet 22a is formed that is smaller than the width V of the neck 12 and larger than the thickness T, which is the distance from the plane 12a on one opposing side to the other plane 12a, and the inlet ( It is connected to and connected to the inlet 22a, and is formed to have a wider width than the inlet 22a, forming an expansion portion 22b in which the neck 12 is accommodated.

In addition, the neck 12 is accommodated and a compression spring 30 is provided between the head 11 and the front plate 21. The compression spring 30 has an inner diameter that accommodates the locking portion 13, and since the locking portion 13 is fitted into the compression spring 30, the neck 12 can also be accommodated.

In addition, as shown in FIG. 4, a reinforcing groove 24 is formed on one of the front or rear sides of the front plate 21 and is concave on the opposite side of the inlet 22a, and a reinforcing protrusion 25 is formed on the opposite side. Accordingly, the front plate 21 has the strength to maintain a flat state without being bent, and thus supports the two side plates 23 to maintain a horizontal state without being widened or narrowed.

The reinforcing groove 24 and the reinforcing protrusion 25 are formed simultaneously by striking a tool with a tip corresponding to the reinforcing groove 24 on either the front or rear side of the front plate 21. At this time, of course, a block with a groove corresponding to the reinforcement groove 24 is disposed on the side where the reinforcement groove 24 is formed.

Since the reinforcing groove 24 and the reinforcing protrusion 25 are linear and extend upward and downward, they prevent bending upward and downward. That is, since the reinforcement groove 24 is formed, the reinforcement protrusion 25 formed at the same time plays the same role as the rib formed on the front plate 21, thereby preventing upward and downward bending. Of course, bending to the side is prevented by the side plate 23.

In order to couple the latch bolt 10 and the bracket 20, the method of combining the latch bolt of the present invention is as follows.

First, the locking portion 13 of the latch bolt 10 is accommodated by the compression spring 30. Then, even the neck 12 is accommodated in the compression spring 30. In this state, with the compression spring 30 pushed forward, the portion of the neck 12 exposed to the rear is inserted into the receiving groove 22, and the planes 12a on both sides are arranged upward and downward. Then, it can easily pass through the inlet 22a of the receiving groove 22. Since the width of the inlet 22a is smaller than the width V of the neck 12 and larger than the thickness T, the neck 12 opens the inlet 22a only when both planes 12a are arranged upward and downward. You can pass. In this way, while entering the extended portion 22b, the latch bolt 10 is turned so that both planes 12a face left and right. Then, the neck 12 is caught in the inlet 22a and is prevented from coming off. When removing the latch bolt 10 in this state, it can be removed through the inlet 22a with both planes 12a facing upward and downward. At this time, the compression spring 30 applies force to push the latch bolt 10 forward between the front of the front plate 21 and the head 11. In addition, the locking portion 13 is caught in the expanded portion 22b of the receiving groove 22 to prevent the latch bolt 10 from being released forward. Accordingly, when the latch bolt 10 moves backward due to compression force and the compression force is removed, it returns forward due to the restoring force of the compression spring.

According to the door lock with the latch bolt direction change function according to the present invention, as in the background technology, a C-shaped washer is not required and a separate flange is not required for the strength of the front plate 21. Therefore, the number and volume of parts can be reduced, and thus the manufacturing cost can be lowered compared to the background technology.

In addition, when assembling the latch bolt 10 to the bracket 20, in a state in which the compression spring 30 is pushed forward, the flat surfaces 12a on both sides of the neck 12 are in the receiving groove 22. When the latch bolt 10 is turned after passing it so that it faces the inlet 22a, the inlet 22a prevents the neck 12 from coming off, thus eliminating the inconvenience of the washer coming off during the assembly process as in the background technology. You can. In other words, easier and faster combination is possible compared to background technology.

also. The bracket 20 has the front plate 21 and the side plate 23 spread out in a plate shape, and the side plate 23 is bent backwards to the rear of the front plate 21 by the mold. The reinforcement groove 24 and the reinforcement protrusion 25 can be formed at the same time. Therefore, since the process of folding the flange forward again while bending the side plate 23 backward in the background technology can be omitted, the product can be completed with fewer processes than in the background technology.

Due to the above-mentioned characteristics of the present invention, the present invention is capable of improving productivity.

In another embodiment, the door lock with the latch bolt direction change function of the present invention has a case ( 40) and may further include a first plate 50 and a second plate 60.

The case 40 accommodates the latch bolt 10, the bracket 20, and the compression spring 30, and is divided into left and right sides so that it can be disassembled and assembled.

And the first plate 50 is configured to be disassembled and assembled on one side of the case, and has a first square hole 51 through which the head 11 of the latch bolt 10 can enter and exit, and one side of the casement door. A first hole 52 is formed for fixing with a bolt.

The first holes 52 are formed in two or more locations spaced apart from each other by a certain distance in the vertical direction of the first square hole 51, and may have a circular shape.

As shown in Figure 6, the second plate 60 is configured to be detachable from one surface of the first plate 50, and when the second plate 60 is not attached to the first plate 50, the latch bolt The head 11 of (10) is completely exposed to the outside of the first plate 50 so that the user can set the direction in which the inclined surface 11a of the head 11 is facing by turning.

In addition, a second square hole 61 is formed in the second plate 60 through which the head 11 can enter and exit. When the second plate 60 is attached to one side of the first plate 50, As the second square hole 61 surrounds the edge of the head 11, the head 11 cannot rotate and the direction of the inclined surface 11a can be maintained.

In addition, as shown in FIG. 7, when the second plate 60 is attached to one surface of the first plate 50, the second plate 60 has a second hole at the same position as the first hole 52. (62) is formed.

The second hole 62 has a smaller diameter than the first hole 52, and a protruding end 63 that can be accommodated on the inner peripheral surface of the first hole 52 is formed on one side of the second hole 62. Thus, when attaching the second plate 60 to the first plate 50, the protruding end 63 is guided to be inserted into the first hole 52 to facilitate proper assembly.

Additionally, the first plate 50 is made of a metal material, and a portion of the second plate 60 is made of a magnetic material, so that the user can attach and detach the second plate 60 from the first plate 50 using magnetic force. It can be configured to do so.

A door lock with a latch bolt direction change function with the above structure can easily adjust the locking direction of the latch bolt (10) according to the door opening direction by rotating the latch bolt (10) 180 degrees even when assembled on a swing door. It has one structure.

In addition, the main component for changing the direction of the latch bolt 10 is the second plate 60, which is detachable from the first plate 50, and has the advantage of reducing the increase in production cost compared to conventional technology. There is.

The present invention described above has been described with reference to an embodiment shown in the drawings, but this is merely illustrative, and various modifications and other equivalent embodiments can be made by those skilled in the art. should be clarified. Therefore, the true technical protection scope of the present invention should be interpreted in accordance with the attached claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

Latch bolt (10)
Head (11) Slope (11a)
Neck (12) Plane (12a)
Hang part (13)
Bracket (20)
Front plate (21) receiving groove (22)
Inlet (22a) extension (22b)
Side plate (23) Reinforcement groove (24)
Reinforcement protrusion (25)
Compression spring (30) Case (40)
1st plate (50) 1st square hole (51)
1st hole (52)
2nd plate (60) 2nd square hole (61)
Second hole (62) protruding end (63)

Claims (5)

A head 11 with an inclined surface 11a formed on one side to become thick toward the rear, and an axis extending rearward of the head 11 and having a circular cross-section narrower than the head 11, which is flat on both sides. A latch bolt (10) consisting of a neck (12) formed at (12a) and a locking portion (13) formed at the rear end of the neck (12) and having a width greater than that of the neck (12); A front plate 21 that is open on one side and penetrates front and rear, so that the neck 12 is inserted, and has a receiving groove 22 of a size where the locking portion 13 hangs, and both sides of the front plate 21. A bracket (20) consisting of side plates (23) each extending rearward from the end; Includes a compression spring 30 in which the neck 12 is accommodated and interposed between the head 11 and the front plate 21, wherein the receiving groove 22 has a width V of the neck 12. ) and is formed with an inlet 22a larger than the thickness T, which is the distance from the plane 12a on one opposing side to the other plane 12a, and is connected to the inlet 22a, An expansion portion (22b) is formed with a width greater than the inlet (22a) to accommodate the neck (12),
The latch bolt 10, the bracket 20, and the compression spring 30 are accommodated on one side of the case 40, which is divided into left and right sides and can be disassembled and assembled, so that the head of the latch bolt 10 A first plate (50) having a plurality of first square holes (51) through which (11) can enter and exit, and a plurality of circular first holes (52) for fastening to one side of the casement door and bolts; It is configured to be attachable and detachable from one side of the first plate 50, and when the second plate 60 is attached to one side of the first plate 50, it surrounds the edge of the head 11, thereby forming the head 11. ) includes a second plate (60) in which a second square hole (61) is formed so that the direction of the inclined surface (11a) cannot be rotated, but the second plate (60) is formed with the first plate (50) In the state where it is not attached, the head 11 of the latch bolt 10 is completely exposed to the outside of the first plate 50, so the user turns the direction in which the inclined surface 11a of the head 11 faces. It is configured so that it can be set as,
When the second plate 60 is attached to one surface of the first plate 50, the second plate 60 has a second hole 62 at the same position as the first hole 52. The second hole 62 has a smaller diameter than the first hole 52, and one surface of the second hole 62 has a protruding end 63 that can be accommodated on the inner peripheral surface of the first hole 52. ) is formed so that when the second plate 60 is attached to the first plate 50, the protruding end 63 is guided to be inserted into the first hole 52,
A door lock with a latch bolt direction change function, characterized in that the first plate (50) is made of a metal material, and a portion of the second plate (60) is made of a magnetic material. delete delete delete delete