KR200282721Y1 - Latch bolt functioning structure of tubular type door lock - Google Patents

Abstract

The present invention relates to a latch bolt operating structure of a tubular door lock that opens and closes a door by reciprocating the latch bolt 11, the guard bolt 12, and the operating piece 13 by the rotation of a lever installed on the inside and the outside of the door. do. In the present invention, cases 21 and 22 having a symmetrical structure which are vertically divided into inner and outer sides are used. The case 21 and 22 is fixed to the connecting rod 23 to accommodate the rear end of the latch bolt 11, the guard bolt 12, the operation piece 13 to be accessible. In addition, the retractors 24 and 34, which have holes 24b and 34b and wing pieces 24c and 34c integrally on the side surfaces, mesh with the rear ends of the latch bolt 11 and the operating piece 13 to interlock. Connection means for converting the rotation of the lever to the reciprocating motion of the retractors 24 and 34 is mounted inside the cases 21 and 22 so as to interlock with the rotational shaft of the lever.

Accordingly, in manufacturing, it is possible to improve the compatibility of the parts between different door lock types, greatly reducing the cost, while also reducing the operating angle of the lever in use, there is a useful effect that the door can be conveniently opened.

Description

Latch bolt functioning structure of tubular type door lock

The present invention relates to a latch bolt operating structure of a door lock, and more particularly, to improve the compatibility of parts between different door lock types in manufacturing, to reduce the cost, and to reduce the operating angle of the lever even in use, to facilitate the door. The latch bolt operating structure of the tubular door lock that can be opened easily.

In general, door locks are classified into cylindrical and tubular shapes, which are attached to universal doors in offices and homes, and box shapes, which are attached to handles on the front of casings, such as entrance doors or fire doors of apartments. In the case of door locks of the same type, the components inside are slightly different according to each design, but the main components are the same. However, if the type of door lock is different, almost all components are incompatible.

7 is a perspective view showing the main structure of the door lock according to an exemplary embodiment of the present invention.

In the figure, reference numeral 1 denotes a latch bolt reciprocating to engage the door frame, and reference numeral 2 denotes a guard bolt for preventing abnormal door opening from the outside. Levers (not shown) respectively provided on the inside and the outside of the door are engaged with the hub of numeral 5. Reference numeral 3 denotes an operation piece for allowing or restraining the reciprocation of the guard bolt 2, reference numeral 6 denotes a latch cam that rotates in conjunction with the hub 5, and reference numeral 4 denotes a latch bolt 1 for rotation of the latch cam 6. It is a retractor which switches to the reciprocating motion of the guard bolt 2. Accordingly, the latch bolt 1 and the guard bolt 2 reciprocate in conjunction with the rotation of the lever. In this way, the guard bolt 2 performs a dead locking function that restrains any opening of the door from the outside.

In addition, FIG. 7 is a form in which deadlocking is applied to a tubular door lock, and the operation principle of the structure is not only different from that of the cylindrical latch, but also the structure is very complicated. Therefore, in the case of the tubular door lock aiming at high quality, there is also a problem of lowering the original function of convenience and stability of operation.

For example, since the angle of rotation of the latch cam 6 to satisfy the stroke distance between the latch bolt 1 and the guard bolt 2 is large, it is very inconvenient to use the door when the lever in a horizontal state is rotated by 60 ° or more. In addition, there is a risk of dropping objects while operating the lever at a large angle, especially when the door is opened by yourself with both hands.

Accordingly, the present invention is to solve the above problems and closures, and in the manufacture of door locks, it is possible to improve the compatibility of parts between different door lock types, thereby greatly reducing the cost and reducing the operating angle of the lever in use, thereby making the door convenient. It is an object of the present invention to provide a latch bolt operating structure of a tubular door lock that can be easily opened.

1 is an exploded perspective view illustrating the main parts of the present invention;

Figure 2a is a planar state configuration showing the state before operation of the door lock according to the present invention,

Figure 2 b is a side state configuration diagram showing a state before operation of the door lock according to the present invention,

3 a is a plan view showing the state after the operation of the door lock according to the present invention,

Figure 3 b is a side state configuration diagram showing a state after the operation of the door lock according to the present invention,

Figure 4a is a planar configuration diagram showing a deadlocking state of the door lock according to the present invention,

Figure 4 b is a side state configuration diagram showing a deadlocking state of the door lock according to the present invention,

Figure 5 is a cross-sectional view showing a state in which the door lock is installed according to the present invention,

6 is a perspective view showing a main part according to another embodiment of the present invention;

7 is a perspective view showing the internal configuration of a door lock according to a conventional embodiment.

Explanation of symbols on the main parts of the drawings

11: Latch Bolt 12: Guard Bolt

13: Operation Part 14: Latch Stop Operation Plate

15: Latchstop 21, 22: Case

23: connecting rod 24, 34: retractor

24c, 34c: wing 25, 35: hub

25b, 35b: protruding jaw 26: latch cam

26b: Wing Jaw

In order to achieve this purpose, the present invention is a door lock for opening and closing the door by reciprocating the latch bolt 11, guard bolt 12, the operating piece 13 by the rotation of the lever installed on the inside and outside of the door,

Cases 21 and 22 having a symmetrical structure which is vertically divided into inner and outer sides; A connector 23 fixed to the case 21 and 22 to accommodate the latch bolt 11, the guard bolt 12, and the rear end of the operation piece 13 to be accessible; The latch bolt 11 and the rear end of the operation piece 13 are engaged with the grooves 24a and 34a of the retractor 24 and 34, and interlock with each other, and the holes 24b and 34b and the wing piece 24c are provided on the side surfaces. A retractor (24) (34) having a) (34c) integrally; And connection means mounted in the cases 21 and 22 so as to interlock with the rotary shaft of the lever and converting the rotation of the lever into the reciprocating motion of the retractor 24 and 34. .

In one embodiment, the connecting means includes a pair of wing jaws 26b in which a straight protruding jaw 25b is selectively engaged with a hub 25 formed on a cylindrical outer surface and a protruding jaw 25b of the hub 25. ) Has a latch cam 26 formed on one side.

In another embodiment, the connecting means includes a hub 35 having a fan-shaped protruding jaw 35b installed on a cylindrical outer surface.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment according to the present invention.

1 is an exploded perspective view showing the main portion of the door lock according to the present invention.

The present invention relates to a door lock for opening and closing the door by reciprocating the latch bolt 11, the guard bolt 12, the operation piece 13 by the rotation of the lever installed on the inside and outside of the door, the symmetry that is divided into two ends in and out Cases 21 and 22 of construction are used. The cases 21 and 22 are semi-cylindrical structures that are mounted to the door in a state of accommodating parts described later, and have holes 21a, 21b, 22a, and 22b on the side. Since the joining surfaces of the cases 21 and 22 are left and right in the door, they are positioned inward and outward, respectively. When the inner and outer cases 21 and 22 have the same symmetrical structure, they are compatible with each other and the cost is reduced in manufacturing, maintenance and management.

According to the present invention, the connecting rod 23 is fixed to the cases 21 and 22 so as to accommodate the rear end of the latch bolt 11, the guard bolt 12, the operation piece 13 to be accessible. The latch bolt 11, the guard bolt 12, and the operation piece 13 are commonly used to apply the tubular door lock to the cylindrical door lock described above. The latch bolt 11 and the guard bolt 12 have a structure in which the tail of the rear end is separated and integrally formed. The connecting table 23 is provided with a groove 23a so that the tail of the latch bolt 11, the tail of the guard bolt 12, and the rear end of the operation piece 13 are respectively accessible. As shown in the drawing, two rods extend in the front of the connecting table 23, and the latch stop operating plate 14, the latch stop 15, and the spring mounting structure are the same as those of the cylindrical door lock. On the other hand, in the present invention, the connecting table 23 is engaged with the above-described cases 21 and 22 so as to be accommodated in a fixed position, thereby omitting the components connecting the body of the latch and the door lock required in the conventional cylindrical door lock, and simplifying the flat plate shape. can do.

In addition, according to the present invention, the retractor 24 and 34 having the holes 24b and 34b and the wing pieces 24c and 34c integrally formed on the side thereof are provided with the latch bolt 11 and the operation piece 13. Interlock with the rear end of the The retractors 24 and 34 are plate members bent in a U-shape, and holes 24b and 34b and wing pieces 24c and 34c are symmetrically formed in the same size on both sides. And the front of the retractor 24 shown in Figure 1 is formed with a groove (24a) is engaged with the tail of the latch bolt 11 and the rear end of the operating piece (13). In addition, by cutting the letter C at both sides of the retractor 24 to form a hole (24b), the bent portion is bent into a curved surface to form a wing piece (24c).

As described above, according to the present invention, a connecting means for converting the rotation of the lever into the reciprocating motion of the retractor 24 and 34 is mounted inside the cases 21 and 22 so as to interlock with the rotating shaft of the lever. As an embodiment of the present invention, the connecting means includes a hub 25 and a latch cam 26 inside the cases 21 and 22 as shown in FIG.

The hub 25 has a cylindrical structure in which a hole 25a engaging with the shaft of the lever is formed concentrically, and a straight protruding jaw 25b is formed in a cantilever shape on the cylindrical outer surface of the hub 25. The latch cam 26 also has a cylindrical structure in which the holes 26a are formed concentrically, and a pair of wing jaws 26b selectively engaged with the protruding jaws 25b of the hub 25 is formed at one side. Each wing jaw 26b has a crescent shape in which the opposite inner surface has a smaller curvature than the outer surface. In the assembly, the rotating shaft of the lever is coupled to the hub 25 through one hole 21a formed in the case 21 and 22, and the pin 16 is latch cam 26 through another hole 21b smaller than this. Is coupled to the hole 26a. Accordingly, the protruding jaw 25b of the hub 25 is in contact with the inner surface of the wing jaw 26b, and the wing piece 24c of the retractor 24 is in contact with the outer surface.

Figure 2 is a block diagram showing a state before the operation of the door lock according to the present invention, Figure 3 is a block diagram showing a state after the operation of the door lock according to the present invention.

When the hub 25 is in a closed state as shown in FIG. 2, the protruding jaw 25b is located at the center of both wing jaws 26b of the latch cam 26, and the wing jaws 26b of the latch cam 26 are retractors. Slightly overlaps the wing piece 24c of (24). The latch bolt 11 and the guard bolt 12 protrude from the mounting plate P by the force of the spring interposed between the connecting table 23 and enter the door frame. As shown in FIG. 3, when the hub 25 is rotated to one side, the protruding jaw 25b opens the wing jaw 26b on one side. The latch cam 26 has a structure in which a pair of wing jaws 26b are simultaneously opened. The wing jaw 26b of the latch cam 26 presses the wing piece 24c of the retractor 24 so that the retractor 24 retreats, so that the latch bolt 11 and the guard bolt 12 At the same time, it is retracted to enter the mounting plate P and open the door. While the spring is compressed to accumulate elastic energy while the connecting table 23 and the retractor 24 are separated, the lever returns to the state of FIG. 2 again when the lever is released.

4 is a configuration diagram showing a deadlocking state of the door lock according to the present invention, Figure 5 is a configuration sectional view showing a state in which the door lock according to the present invention is installed.

As described above, the retraction of the retractor 24 is interlocked with the retraction of the latch bolt 11 and the guard bolt 12. However, reversal of the retraction of the latch bolt 11 and the guard bolt 12 inducing the retraction of the retractor 24 is impossible. That is, when the plate bolt is inserted into the door gap and the latch bolt 11 is abnormally retracted, the latch stop operating plate 14 rotates the latch stop 15 to restrain the movement of the latch bolt 11. No retreat

5 is a planar cross-sectional view, the lower side is a door and the upper side is a door frame based on the mounting plate P. FIG. The case 21, 22 containing the above-mentioned parts is pushed into the hole of the door, and the lever L is inserted onto the hub 25, and the coupling is completed. Accordingly, a tubular door lock having a deadlocking function is completed to restrain the retraction of the latch bolt 11 when the door is abnormally opened to prevent intrusion.

3 and 5, the rotation angle of the lever L is equal to the rotation angle of the hub 25. In the present invention, even when the hub 25 is rotated at a small angle, the opening operation of FIG. 3 is performed. There is convenience. This is due to the structure in which the wing piece 24c for reciprocating the retractor 24 is spaced far from the rotation center of the hub 25, and adjusts the shape of the wing jaw 26b of the latch cam 26 to adjust the retractor ( It is easy to increase or decrease the stroke distance of 24). In the conventional case, the lever L should be rotated upward or downward at least 60-70 ° or more, but in the present invention, the door can be opened even if only about 20-25 ° is rotated.

Figure 6 is a perspective view showing the main portion according to another embodiment of the present invention.

1, the structure of the front of the connecting table 23 is the same as in the case of Figure 1, while there is some difference in the structure behind the retractor 34. At this time, the connecting means has a fan-shaped protruding jaw (35b) is provided with a hub (35) installed on the outer surface of the cylinder. The hub 35 has a cylindrical structure in which a hole 35a is formed on a central axis, and a fan-shaped protruding jaw 35b is formed in an upper and lower two-stage structure on the outer surface. In the retractor 34, the groove 34a of the front surface where the tail of the latch bolt 11 and the rear end of the operation piece 13 are engaged is formed. The structure and function of the side hole 34b and the wing piece 34c in the connecting table 23 are also the same as in FIG. The protruding jaw 35b overlaps the blade piece 34c through the hole 34b of the retractor 34.

In the configuration of FIG. 1, the protrusion jaw 25b of the hub 25 is coupled to the rear, and in the configuration of FIG. 6, the protrusion cam 35b of the hub 35 is coupled to the front while being engaged with the latch cam 26; 1) is excluded. FIG. 6 has the advantage of lowering the manufacturing cost while reducing the number of parts, whereas the projection 34b of the hub 35 is directed toward the front of the retractor 34, and thus the position of the hole 34b is involved. In addition, when the hub 35 is engaged in front of the retractor 34, there is a limit in increasing the stroke distance of the retractor 34, which is disadvantageous in terms of keeping the operating angle of the lever L small as shown in FIG.

According to the above configuration and operation, the present invention improves the compatibility of components between different types of door locks in the manufacture of door locks, and greatly reduces the cost, while reducing the operating angle of the lever in use, which can conveniently open the door. It works.

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

Claims (3)

In the door lock for opening and closing the door by reciprocating the latch bolt 11, the guard bolt 12, the operation piece 13 by the rotation of the lever installed on the inside and outside of the door, Cases 21 and 22 having a symmetrical structure which is vertically divided into inner and outer sides; A connector 23 fixed to the case 21 and 22 to accommodate the latch bolt 11, the guard bolt 12, and the rear end of the operation piece 13 to be accessible; It engages with the rear end of the latch bolt 11 and the operation piece 13, and has grooves 24a and 34a in the front side, and holes 24b and 34b and wing pieces 24c and 34c in the side surface. Retractors 24 and 34 having integrally with; And And a connecting means mounted inside the cases 21 and 22 so as to interlock with the rotational shaft of the lever and converting the rotation of the lever into the reciprocating motion of the retractors 24 and 34. Tubular door lock with locking structure. The method of claim 1, The connecting means includes a hub 25 having a straight protruding jaw 25b formed on a cylindrical outer surface and a pair of wing jaws 26b selectively engaged with the protruding jaw 25b of the hub 25 on one side thereof. The latch cam 26 is a tubular door lock having a deadlocking structure, characterized in that even if the hub 25 is rotated at a small angle, the stroke distance of the retractor 24 is increased to greatly reduce the rotation angle of the lever. The method of claim 1, The connecting means is a tubular door lock of the deadlock structure, characterized in that the fan-shaped protruding jaw (35b) has a hub (35) installed on the cylindrical outer surface.