KR102151646B1 - Push-Pull type Door Locks for rooms - Google Patents

Abstract

The push-pull-type door lock for visit according to the present invention has a push-pull-type door lock that is operated by a push-pull operation even at a visit other than the front door, so that infants and seniors who are inconvenient to operate can easily open and close the door by manipulating the handle, The structure of the mortise part is simplified by providing a clutch mechanism that operates the rotation of the latch bolt only by contact and separation, and the door lock can be easily released in the room by forming a release guide slope that is inclined at a predetermined angle on one side of the rotation lock key. There is an effect that the latch bolt can be smoothly operated by providing a pressure ball and a ball spring that auxiliaryly push the latch bolt inside the clutch hole.

Description

Push-Pull type Door Locks for rooms}

The present invention relates to a push-pull-type door lock for visiting, and more particularly, a push-pull-type door lock for visiting operated by a push-pull operation so that an infant or an elderly person who is inconvenient to operate can easily manipulate the handle, and a latch bolt and It relates to a push-pull type door lock for visiting provided with a pressure ball and a ball spring that auxiliaryly pushes a latch bolt so that a clutch hole is smoothly spaced apart.

In general, a door lock that operates to open and close a door is formed with a round part on one side and a latch bolt composed of a facing part on the opposite side.When the door is closed, the round part is pushed into the door lock case by pressure and then returns to the striker installed on the door frame. It is an unlocking device that locks the door by being inserted into the latch groove of the door, and the latch bolt is inserted into the door lock case by rotating the handle when opening the door, and the door is opened by a continuous push or pull operation.

With the development of the door lock technology, recently, a push-pull type door lock has been developed that can open and close a door with a single action of pressing a push button or pulling a pull lever.The push-pull type door lock is designed to push a push button or pull a pull lever. In this case, a door lock having a structure in which the latch bolt of the door lock operates is disclosed.

Here, Patent No. 10-0873401 has been disclosed as a technical document related to a conventional push-pull type door lock.

Such a conventional push-pull type door lock must be accompanied by a square-shaped door lock mortise for the easy operation of the latch bolt and the dead bolt. This is a complex configuration suitable for a secure and robust locking system such as a front door of a house. Likewise, the simple structure of the locking system had a problem of increasing inefficient size and unnecessary installation cost.

This has a disadvantage of having to have a fairly complex mechanical connection structure in order to obtain sufficient force to move the dead bolt, because the width at which the operating lever can move is very small in structure compared to the existing rotary door lock. The door lock body had a structural limit inevitably increasing the volume.

On the other hand, the conventional door lock installed in the door is a rotary handle type, that is, a door lock that operates the latch bolt by rotating after the user holds the handle. As described above, the push-pull type, that is, the user does not hold the handle. Door locks that can operate latch bolts by simply pushing or pulling in the unchanged state were a technology that cannot be found in door locks at present.

Recently, technologies related to door locks for door grafting with the push-pull type have been developed, but as described above, they have not been used due to inefficient size and unnecessary increase in installation cost, and the structure and size of the door lock are reduced. For the push-pull type door lock, there is a problem that the operation is not performed smoothly.

The present invention was created to solve the problems of the prior art as described above, and an object of the present invention is to provide a push-pull type door lock that is operated by a push-pull operation even at a visit other than the front door, so that it is easy for infants and the elderly who are inconvenient to operate The door can be opened and closed by manipulating the handle, and a clutch mechanism that operates the rotation of the latch bolt only by contact and release simplifies the structure of the mortise, and forms a release induction slope that is inclined at a predetermined angle on one side of the rotation lock key. Therefore, in the plan, the door lock can be easily released, and a push-pull type door lock for visiting is provided that can smoothly operate the latch bolt by providing a pressure ball and a ball spring that auxiliaryly push the latch bolt inside the clutch hole.

The push-pull-type door lock for a visit according to the present invention for achieving the above object is a push-pull-type door lock installed at the door to operate a latch bolt by a pushing or pulling action, and is inserted into the side of the door and the latch bolt is received. Consisting of a shaped mortise part, an outer handle part attached to the rear side of the door and having an outer key therein, and an inner handle part attached to the front side of the door and having an inner key therein; The mortise portion is inserted into the side of the landing and the box-shaped mortise body is accommodated so that the latch bolt is rotated, a clutch mechanism that contacts one surface of the latch bolt and regulates rotation of the latch bolt, and from one surface of the clutch mechanism to the rear. An extended clutch rod, a rod fixing piece into which the clutch rod is inserted and attached to an inner wall of the mortis body, a locking piece formed at an end of the clutch rod and having a cross-sectional area larger than the diameter of the clutch rod, A hook-shaped clutch drive unit connected to the locking piece, a rotation driver connected to the outer key and the inner key to individually rotate the clutch drive unit, and the rotation driver connected to the rear of the rotation driver It characterized in that it is configured with a rotation control key to control.

The clutch mechanism includes a clutch body in contact with the latch bolt, a clutch hole penetrating through the center of the clutch body, a spherical pressure ball seated in the clutch hole and pressing one surface of the latch bolt, and a rear of the clutch body And a pipe-shaped clutch pipe extending from the clutch rod and inserted into the clutch rod, and a ball spring provided inside the clutch pipe and pressing the pressure ball.

The clutch hole has a contact surface formed on one surface of the clutch body and recessed into the same curved surface as the one surface of the latch bolt, and a locking protrusion protruding in the direction of the latch bolt on one surface of the contact surface; A latch groove stepped inward is formed on one side of the latch bolt so that the locking protrusion is seated.

The clutch drive mechanism comprises a pair of driving pieces curved inwardly of the locking piece and provided at the upper and lower portions of the locking piece, and a rotation hinge part formed in the center of the driving piece and connected to the inner wall of the mote body so that the driving piece rotates. To do.

The rotation driver has a cylindrical outer driving body connected to the outer key, an outer driving protrusion in contact with the clutch driving mechanism on one side of the outer driving body, and the rotation control key to be seated on the other side of the outer driving body. An outer intermittent groove concave inward, a cylindrical inner driving body connected to the inner key, an inner driving protrusion in contact with the clutch driving mechanism on one side of the inner driving body, and the rotation on the other side of the inner driving body It characterized in that it is made of an inner cracking groove recessed inward so that the cracking key is seated.

The rotation control key is formed on a cylindrical key body that is moved to the front and rear of the mortise body, an outer intermittent protrusion that is formed on one side of the key body and inserted into or separated from the outer intermittent groove, and is formed on one surface of the outer intermittent protrusion. It characterized in that it consists of an inner intermittent protrusion that is inserted or separated from the inner intermittent groove.

A release induction inclined surface inclined at a predetermined angle is formed on one surface of the inner intermittent protrusion; A release induction inclined groove inclined at an angle corresponding to the release induction inclined surface is formed on an inner circumferential surface of the inner intermittent groove.

The outer handle part includes a box-shaped outer handle cover attached to the rear side of the door, a bar-shaped outer lever connected to the rear side of the outer handle cover and rotated in a forward and backward direction, and protruding from the front of the outer lever in a vertical direction. The outer lever rod rotated to the outer lever rod, the outer elevating port which is connected to the outer lever rod to elevate in a vertical direction, and an outer protrusion protruding in front of the outer elevating port, and the outer protrusion is inserted so that the outer key is rotated. It characterized in that it is made of an outer groove perforated at a position spaced apart by a predetermined distance from the central axis of the outer key.

The inner handle part includes a box-shaped inner handle cover attached to the rear side of the landing, a bar-shaped inner lever connected to the rear side of the inner handle cover and rotated in a forward and backward direction, and protruding from the front of the inner lever in a vertical direction. The inner lever rod rotated to the inner lever rod, the inner elevating port that is connected to the inner lever rod to elevate and descend in a vertical direction, and an inner protrusion protruding from the front of the inner elevating port, and the inner protrusion is inserted so that the inner key is rotated. It characterized in that it is made of an inner groove perforated at a position spaced apart by a predetermined distance from the central axis of the inner key.

An outer auxiliary lever extending downward is formed under the outer lever; It is characterized in that an inner auxiliary lever extending downward is formed under the inner lever.

As described above, the effect of the push-pull type door lock for visiting according to the present invention is as follows.

First, by providing a push-pull type door lock that is operated by a push-pull operation even at a visit other than the front door, even infants and the elderly who are inconvenient to operate can easily manipulate the handle to open and close the door.

Second, by providing a clutch hole with a locking protrusion that is inserted into or removed from the latch groove formed on the outer circumferential surface of the latch bolt, it is possible to conveniently control the rotation of the latch bolt through the reciprocating movement of the clutch hole, thereby simplifying the structure of the mortise part,

Third, by providing a pair of driving pieces on the upper and lower portions of the clutch mechanism, the clutch mechanism can be easily retracted no matter which direction the outer handle part or the inner handle part is operated,

Fourth, by forming a release guide slope that is inclined at a predetermined angle on one side of the rotation control key, in the room, even when the rotation control key is locked, the door lock can be easily released and the door can be opened.

Fifth, by providing a pressurizing ball and a ball spring that auxiliaryly pushes the latch bolt inside the clutch hole, the latch bolt and the clutch body can be easily separated from the closely attached by lubricating oil, so that the latch bolt can be operated smoothly. There is.

1 is an installation state diagram showing a push-pull type door lock for the present invention,
2 is an exploded view showing a push-pull type door lock for the present invention,
3 is an exploded perspective view showing a mortise portion for the present invention,
4 is a partial action flow chart showing the action of the mortise portion for the present invention,
5 is a partial action flow chart showing the action of the clutch part for the present invention,
6 is a partial perspective view and a plan view showing the rotation speed key of the present invention,
7 is a plan view showing the action of the rotation speed key for the present invention,
8 is a perspective view and an exploded perspective view showing a handle part for the present invention,
9 is a side view and a front view showing the operation of the handle portion for the present invention,
10 is a perspective view showing an auxiliary lever for the present invention.

Hereinafter, an exemplary embodiment of the present invention will be described in detail with reference to the accompanying drawings.

The push-pull type door lock for visiting according to the present invention is a push-pull type door lock (R) installed in the door (D) to operate the latch bolt (2) by pushing or pulling, as shown in FIGS. A box-shaped mortise portion 10 inserted into the side of the door D and accommodating the latch bolt 2, and the mortise portion 10 attached to the rear surface of the door D so that the latch bolt 2 is operated ( The outer handle part 20 protrudes in the direction of 10 and the outer key 21 is provided therein, and the mortise part 10 is attached to the front of the door D and the latch bolt 2 is operated. It is projected to and consists of an inner handle part 30 provided inside the inner key 31.

At this time, the mortise portion 10 is inserted into the side of the landing (D) as shown in Figs. 3 to 5 and the box-shaped mortise body 11 accommodated so that the latch bolt 2 is rotated, and the A clutch mechanism 12 that contacts one surface of the latch bolt 2 and regulates rotation of the latch bolt 2, a clutch rod 13 extending rearward from one surface of the clutch mechanism 12, and the clutch The rod 13 is inserted and formed at the end of the clutch rod 13 and the rod fixing piece 14 attached to the inner wall of the mortise body 11 and extended larger than the diameter of the clutch rod 13 A locking piece 15 having a cross-sectional area, a hook-shaped clutch drive unit 16 connected to the locking piece 15, and each of the outer key 21 and the inner key 31 are individually connected to the clutch tool It consists of a rotation driver 17 for rotating the rotor 16, and a rotation control key 18 connected to the rear of the rotation driver 17 to regulate the rotation of the rotation driver 17.

On the other hand, on the outer circumferential surface of the clutch rod 13, the clutch mechanism 12 retracted through the clutch drive mechanism 16 can be returned to the original position. It is preferable that a coil spring-shaped spring (S) provided in between is provided.

In addition, the clutch mechanism 12 includes a clutch body 121 in contact with the latch bolt 2 as shown in FIG. 5, a clutch hole 122 penetrating through the center of the clutch body 121, A spherical pressure ball 123 that is seated in the clutch hole 122 and presses one surface of the latch bolt 2, and a pipe extending from the rear of the clutch body 121 and inserted into the clutch rod 13 It consists of a clutch pipe 124 having a shape and a ball spring 125 provided inside the clutch pipe 124 and pressurizing the pressure ball 123.

On the other hand, the size of the clutch hole 122 is smaller than the diameter of the pressure ball 123, but protrudes to the front of the clutch body 121 of the pressure ball 123 to contact the latch bolt (2). It is desirable to be perforated to the size that is present.

In addition, the clutch hole 12 has a contact surface 126 formed on one surface of the clutch body 121 and recessed into the same curved surface as that of the latch bolt 2, and the latch on one surface of the contact surface 126 The locking protrusion 127 protruding in the direction of the bolt 2 is formed; A latch groove 2a stepped inward so that the locking protrusion 127 is seated is formed on one surface of the latch bolt 2.

On the other hand, it is preferable that a lubricant such as grease is applied to the contact surface 126 to reduce frictional force when the latch bolt 2 contacts.

In addition, the clutch drive unit 16 is curved inward of the locking piece 15 as shown in FIG. 4 and a pair of driving pieces 161 provided in the upper and lower portions of the locking piece 15, and the It is formed in the center of the driving piece 161 and is composed of a rotation hinge portion 162 connected to the inner wall of the mortise body 11 so that the driving piece 161 rotates.

In addition, the rotation driver 17 is a cylindrical outer drive body 171 connected to the outer key 21, as shown in Figures 3 to 4, and the outer drive body 171 on one side of the An outer driving protrusion 172 in contact with the clutch drive unit 16, and an outer intermittent groove 173 recessed inward so that the rotation speed key 18 is seated on the other side of the outer driving body 171, A cylindrical inner driving body 174 connected to the inner key 31, an inner driving protrusion 175 in contact with the clutch driving mechanism 16 on one side of the inner driving body 174, and the inner driving It consists of an inner intermittent groove 176 concaved inward so that the rotation intermittent key 18 is seated on the other side of the main body 174.

On the other hand, it is preferable that the outer driving protrusion 172 and the inner driving protrusion 175 are formed in a shape in which the diameters of the ends thereof are enlarged so as to be caught on the rear end of the clutch driving unit 16.

At this time, the rotation control key 18 is formed on one side of the cylindrical key body 181 and the key body 181 moved to the front and rear of the mortise body 11 as shown in FIG. The outer intermittent protrusion 182 inserted into or separated from the outer intermittent groove 173 and the inner intermittent protrusion 183 formed on one surface of the outer intermittent protrusion 182 and inserted into or separated from the inner intermittent groove 176 Done.

On the other hand, the key body 181 is inserted into the rotation control key 18 and fixed to the inner wall of the mortise body 11, and the key body 181 is inserted so that the key body 181 reciprocates forward and backward. It is preferable that the key body seating hole (not shown) in the shape of a square pipe is formed.

Here, on one surface of the inner intermittent protrusion 183, a release guide slope 184 inclined at a predetermined angle is formed as shown in FIG. 7; A release induction inclined groove 176a inclined at an angle corresponding to the release induction inclined surface 184 is formed on the inner circumferential surface of the inner intermittent groove 176.

In addition, the outer handle part 20 is a box-shaped outer handle cover 22 attached to the rear of the landing (D) as shown in Figs. 8 to 9, and the rear of the outer handle cover 22 A bar-shaped outer lever 23 connected to and rotated in the front and rear direction, an outer lever rod 24 protruding in front of the outer lever 23 and rotating in a vertical direction, and the outer lever rod 24 The outer elevating hole 25 which is connected to elevate in the vertical direction, the outer protrusion 26 protruding from the front of the outer elevating port 25, and the outer protrusion 26 are inserted, and the outer key 21 It consists of an outer groove 27 perforated at a position spaced apart from the central axis of the outer key 21 by a predetermined distance so that the outer key 21 rotates.

In addition, the inner handle part 30 is connected to the box-shaped inner handle cover 32 attached to the rear side of the door D, and the bar shape that is connected to the rear side of the inner handle cover 32 and rotates in the front and rear direction. Of the inner lever 33, an inner lever rod 34 protruding in front of the inner lever 33 and rotating in a vertical direction, and an inner lifting and descending vertically connected to the inner lever rod 34 The steel ball 35, the inner protrusion 36 protruding from the front of the inner elevating and descending port 35, the inner protrusion 36 is inserted, and the inner key 31 is rotated. It consists of an inner groove (37) drilled at a position spaced apart from the central axis by a predetermined distance.

On the other hand, it is preferable that the outer handle cover 22 and the inner handle cover 32 are provided with a plate-shaped cover C that closes the openings of the outer handle cover 22 and the inner handle cover 32.

Further, as shown in FIG. 10, an outer auxiliary lever 28 extending downward is formed under the outer lever 23; An inner auxiliary lever 38 extending downward is formed under the inner lever 33.

Looking at the operation of the push-pull type door lock for visiting according to the present invention made of the configuration as described above is as follows.

The push-pull type door lock for visiting according to the present invention is a push-pull type door lock R that is installed in the door D and operates the latch bolt 2 by pushing or pulling, as shown in FIGS. 1 to 2.

That is, the box-shaped mortise portion 10 inserted into the side of the door D and accommodated the latch bolt 2, and an outer handle portion that operates the latch bolt 2 by pushing or pulling the front and rear portions thereof. By providing the inner handle part 20 and the inner handle part 30, it is possible to operate the mortise part 10 by a push-pull operation.

By providing a push-pull-type door lock (R) operated by the push-pull operation through this, even infants and the elderly who are inconvenient to operate because there is no need to rotate the existing handle after gripping the handle easily open the door (D) You can close it.

In this case, as shown in FIG. 5, a clutch mechanism 12 for controlling the rotation of the latch bolt 2 is formed inside the mortise part 10, so that the clutch mechanism 12 becomes the latch bolt 2 In a state in contact with the latch bolt 2, rotation of the latch bolt 2 is blocked, and when the clutch hole 12 is separated from the latch bolt 2, the latch bolt 2 can be freely rotated.

Here, a locking protrusion 127 protruding in the direction of the latch bolt 2 is formed on one surface of the clutch hole 12, and the locking protrusion 127 is seated on one surface of the latch bolt 2. As the stepped latch groove 2a is formed, the rotation of the latch bolt 2 can be regulated through the movement of the clutch hole 12.

In addition, at the rear of the clutch mechanism 12, as shown in FIG. 4, the clutch mechanism 12 is connected to a rotation driver 17 that is respectively connected to the outer key 21 and the inner key 31 to rotate. ) Is provided with a hook-shaped clutch drive unit 16 that pulls the), so that when the rotation driver 17 rotates, the clutch drive unit 16 rotates in the opposite direction through a lever action, and the clutch unit 12 Can be pulled back easily.

At this time, the clutch drive unit 16 is provided with upper and lower portions, that is, a pair of driving pieces 161, so that the rotation direction of the rotation driver 17, that is, the outer handle part 20 or the inner handle part ( No matter which direction 30) is operated, the clutch mechanism 12 can be retracted.

Meanwhile, a spring (S) for elastically pressing the clutch mechanism 12 is provided at the rear of the clutch mechanism 12, so that the clutch mechanism 12 retracted through the clutch drive mechanism 16 is fixed again. You can return to the position.

In addition, the rotation driver 17 is individually composed of a cylindrical outer driving body 171 connected to the outer key 21 and a cylindrical inner driving body 174 connected to the inner key 31, so that the outer handle By individually operating the action of the part 20 or the action of the inner handle part 30, it is possible to distinguish between the inside and outside of the room.

At this time, by providing a rotation control key 18 that regulates the rotation of the rotation driver 17 at the rear of the rotation driver 17, the rotation of the rotation driver 17 is regulated. The key 18 is moved to the front and rear of the mortise body 11 through an external unlocking key (not shown), so that the rotation driver 17 can be rotated or fixed.

Here, the rotational control key 18 is inserted into or separated from the outer intermittent protrusion 182 or the inner intermittent groove 176 inserted or separated from the outer intermittent groove 173 as shown in FIGS. 6 to 7 Since the inner intermittent protrusion 183 is formed, it is possible to intercept or release the rotation of the outer drive body 171 and the inner drive body 174 when the rotation speed key 18 is moved.

On the other hand, on one surface of the inner intermittent protrusion 183, a release induction slope 184 inclined at a predetermined angle as shown in FIG. 7 is formed; The inner circumferential surface of the inner intermittent groove 176 is formed with a release induction inclined groove 176a inclined at an angle corresponding to the release induction inclined surface 184, so that the inner driving body 174 rotates, that is, inside the room. Even when the rotation lock 18 is locked when the inner handle part 30 is rotated, the door lock can be easily released inside the room by releasing the rotation lock key 18 through the release guide slope 184. There will be.

In addition, as shown in FIG. 5, the clutch bolt 12 is pressed on one surface of the latch bolt 2 to prevent the latch bolt 2 and the clutch body 121 from being separated from each other by being attached to various lubricants. By providing the spherical pressure ball 123, it is possible to prevent the clutch body 121 from being easily separated from the latch bolt 2 in advance.

Here, a pressing ball 123 elastically accommodated through a ball spring 125 inside the clutch pipe 124 presses the latch bolt 2 through the clutch hole 122, so that the latch bolt ( 2) and the clutch body 121 can be easily separated so that the latch bolt 2 can be operated smoothly.

In addition, the outer handle part 20 and the inner handle part 30 are spaced apart by a predetermined distance from the central axis when the outer protrusion 26 or the inner protrusion 36 is raised or lowered, as shown in FIGS. 8 to 9. It is possible to rotate the outer key 21 and the inner key 31 through the outer groove (27) and the inner groove (37).

In addition, as shown in FIG. 10, by forming an outer auxiliary lever 28 and an inner auxiliary lever 38 extending downwardly under the outer lever 23 and the inner lever 33, infants and young children who are less tall are formed. B. Elderly people who are difficult to operate in a high position can conveniently operate the door lock (R).

The present invention is not limited to the specific preferred embodiments described above, and any person having ordinary knowledge in the technical field to which the present invention pertains without departing from the gist of the present invention claimed in the claims can implement various modifications Of course, such changes are within the scope of the claims.

<Description of symbols for major parts of drawings>
D: Visit R: Door lock
S: spring C: cover
2: latch bolt 2a: latch groove
10: mortise part 11: mortise body
12: clutch unit 121: clutch body
122: clutch hole 123: pressure ball
124: clutch pipe 125: ball spring
126: contact surface 127: stopping protrusion
13: clutch rod 14: rod fixing piece
15: locking piece 16: clutch drive port
161: drive piece 162: rotation hinge part
17: rotation driver 171: outer drive body
172: outer driving protrusion 173: outer intermittent groove
174: inner driving body 175: inner driving protrusion
176: inner intermittent groove 176a: release guided slope groove
18: rotation control key 181: key body
182: outer intermittent protrusion 183: inner intermittent protrusion
184: release induction slope 20: outer handle part
21: outer key 22: outer handle cover
23: outer lever 24: outer lever rod
25: outer elevating mouth 26: outer protrusion
27: outer groove 28: outer auxiliary lever
30: inner handle part 31: inner key
32: inner handle cover 33: inner lever
34: inner lever rod 35: inner elevation opening
36: inner protrusion 37: inner groove
38: inner auxiliary lever

Claims (10)

In the push-pull type door lock (R) installed in the door (D) to operate the latch bolt (2) by pushing or pulling,
A box-shaped mortise portion 10 inserted into the side of the door D and accommodating the latch bolt 2, and an outer handle attached to the rear of the door D and having an outer key 21 therein Consisting of a part 20 and an inner handle part 30 attached to the front of the door D and having an inner key 31 therein;
The mortise portion 10 is inserted into the side of the door D and contacts the box-shaped mortise body 11 accommodated so that the latch bolt 2 is rotated, and the latch bolt 2 contacts one surface of the latch bolt 2. The clutch mechanism 12 that regulates the rotation of the bolt 2, the clutch rod 13 extending rearward from one surface of the clutch mechanism 12, and the clutch rod 13 are inserted, and the mote body 11 ), a locking piece 15 formed at an end of the clutch rod 13 and having a cross-sectional area larger than the diameter of the clutch rod 13, and the locking piece 14 attached to the inner wall of the A hook-shaped clutch drive unit 16 connected to the piece 15, and a rotation driver 17 connected to the outer key 21 and the inner key 31 to individually rotate the clutch drive unit 16 ), and a rotation control key 18 connected to the rear of the rotation driver 17 to regulate the rotation of the rotation driver 17;
The clutch hole 12 is seated in the clutch body 121 in contact with the latch bolt 2, a clutch hole 122 penetrating through the center of the clutch body 121, and the clutch hole 122 A spherical pressure ball 123 that presses one surface of the latch bolt 2, a pipe-shaped clutch pipe 124 extending from the rear of the clutch body 121 and inserted into the clutch rod 13, Visiting push-pull type door lock, characterized in that it is provided in the inside of the clutch pipe (124) and made of a ball spring (125) for pressing the pressure ball (123). delete The method of claim 1,
The clutch hole 12 has a contact surface 126 formed on one surface of the clutch body 121 and recessed into the same curved surface as the one surface of the latch bolt 2, and the latch bolt on one surface of the contact surface 126 ( The locking protrusion 127 protruding in the direction of 2) is formed;
A push-pull type door lock for visiting, characterized in that a latch groove (2a) stepped inward so that the locking protrusion (127) is seated on one side of the latch bolt (2). The method of claim 1,
The clutch drive unit 16 is curved inward of the locking piece 15 and formed in the center of the driving piece 161 and a pair of driving pieces 161 provided in the upper and lower portions of the locking piece 15 And a rotation hinge part 162 connected to the inner wall of the mortise body 11 so that the driving piece 161 rotates. The method of claim 1,
The rotation driver 17 includes a cylindrical outer driving body 171 connected to the outer key 21, and an outer driving protrusion in contact with the clutch driving tool 16 on one side of the outer driving body 171 (172) And, an outer intermittent groove 173 concaved inward so that the rotational control key 18 is seated on the other side of the outer driving body 171, and a cylindrical inner drive connected to the inner key 31 The main body 174, the inner driving protrusion 175 in contact with the clutch driving port 16 on one side of the inner driving main body 174, and the rotational control key on the other side of the inner driving body 174 (18) Push-pull type door lock for visiting, characterized in that consisting of an inner intermittent groove (176) concave inward to be seated. The method of claim 5,
The rotation control key 18 is formed on a cylindrical key body 181 that is moved to the front and rear of the mortise body 11, and is formed on one side of the key body 181 and is inserted into the outer control groove 173 or Visiting push-pull, characterized in that it comprises an outer intermittent protrusion 182 that is separated, and an inner intermittent protrusion 183 formed on one surface of the outer intermittent protrusion 182 and inserted into or separated from the inner intermittent groove 176 Type door lock. The method of claim 6,
A release guide slope 184 inclined at a predetermined angle is formed on one surface of the inner intermittent protrusion 183;
A push-pull type door lock for visiting, characterized in that a release induction inclined groove (176a) inclined at an angle corresponding to the release induction inclined surface (184) is formed on an inner circumferential surface of the inner intermittent groove (176). The method of claim 1,
The outer handle part 20 is connected to the box-shaped outer handle cover 22 attached to the rear side of the door D, and the bar-shaped outer side which is connected to the rear side of the outer handle cover 22 and rotates in the front and rear direction. A lever 23, an outer lever rod 24 protruding in front of the outer lever 23 and rotating in a vertical direction, and an outer lifting/lowering hole connected to the outer lever rod 24 to elevate and descend in a vertical direction ( 25), and the outer protrusion 26 protruding from the front of the outer elevating hole 25, the outer protrusion 26 is inserted and the central axis of the outer key 21 so that the outer key 21 is rotated A push-pull type door lock for visiting, characterized in that consisting of an outer groove (27) perforated at a position spaced apart by a predetermined distance from. The method of claim 1,
The inner handle part 30 is connected to the box-shaped inner handle cover 32 attached to the rear side of the landing (D), and the bar-shaped inner side which is connected to the rear side of the inner handle cover 32 and rotates in the front and rear direction. A lever 33, an inner lever rod 34 protruding in front of the inner lever 33 and rotating in a vertical direction, and an inner lifting and lowering hole connected to the inner lever rod 34 and moving up and down in a vertical direction ( 35), and the inner protrusion 36 protruding from the front of the inner elevating hole 35, the inner protrusion 36 is inserted and the central axis of the inner key 31 so that the inner key 31 is rotated Visiting push-pull-type door lock, characterized in that consisting of an inner groove (37) perforated at a location spaced apart by a predetermined distance from. The method according to any one of claims 8 or 9,
An outer auxiliary lever 28 extending downward is formed under the outer lever 23;
A push-pull type door lock for visiting, characterized in that an inner auxiliary lever (38) extending downwardly is formed under the inner lever (33).

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