KR101713100B1

KR101713100B1 - Door locking apparatus

Info

Publication number: KR101713100B1
Application number: KR1020150105602A
Authority: KR
Inventors: 이석범
Original assignee: 이석범
Priority date: 2015-07-27
Filing date: 2015-07-27
Publication date: 2017-03-07
Also published as: KR20170012940A

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a door locking apparatus installed inside a side frame of a door, and more particularly, to a door locking apparatus which can be operated so that locking is simultaneously performed at an upper end and a lower end of a door.
The door locking apparatus of the present invention comprises a housing 110 installed inside a frame 100 constituting a side portion of a door 1, a rotary shaft 120 coupled to one side of the inside of the housing in the forward and backward directions, A center shaft 140 coupled to the other side of the housing in the front and rear direction; a circular gear 150 fitted to the center shaft; An operation lever 160 having a cam receiving groove 161 formed at one side thereof and having a cam receiving groove 161 bounded to one direction of rotation of the cam so that the rotated cam can return without rotating the circular gear, A lower locking bar 170 which is provided at an upper end of the frame and which is provided at the lower end of the frame, To be installed engaging in the vertical to the other side of the ring-gear is configured to include an upper locking bar 180 for retracting the upper end of the frame, while lifting in the opposite direction the locking bar and the bottom depending on the direction of rotation of the circular gear.

Description

[0001] The present invention relates to a door locking apparatus,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a door locking apparatus installed inside a side frame of a door, and more particularly, to a door locking apparatus which can be operated so that locking is simultaneously performed at an upper end and a lower end of a door.

2. Description of the Related Art [0002] Generally, a large door installed at an entrance or exit of a building or a door is provided with a door 1 The door locking device 10 is installed at the upper end and the lower end, respectively.

The conventional door locking device 10 includes a locking bar 14 installed in the case 12 so as to move in the vertical direction and a key bar 11 assembled with one side fitting hole 12b of the case 12 And a lock lever 20 which is hingedly rotated inside the case 12 in association with the operation cam 11a. A locking groove 2 corresponding to the locking bar 14 is formed on the bottom or ceiling of the door frame A or the doorway.

When the user pushes the key in the key box 11 and rotates, the operating lever 11 rotates while the locking lever 20 rotates. At the same time, the locking bar 14 is linked to the locking groove 2, And the door 1 is locked and unlocked in this process.

Thus, conventionally, every time the user locks or unlocks the door 1, it is necessary to bend the waist or raise the hand to operate the door locking device 10 installed at the upper and lower ends of the door 1, There were many points.

In particular, since the door locking device 10 installed at the upper end of the door 1 is located at a high altitude at which the user can not reach by hand, a pedestal or a ladder must be used.

Meanwhile, the conventional door locking device 10 is configured such that the locking operation is not performed on the master key having the structure in which the key is removed from the key box 1 only after the door locking device 10 is rotated to one side and returned to the original position Therefore, since different keys are required for each door 1, the management difficulties are very great.

KR 10-1216045 B1

It is an object of the present invention to provide a door locking device capable of operating the locking operation at the upper and lower ends of the door from the center of the door.

It is another object of the present invention to provide a door locking device capable of locking and unlocking through a master key.

In order to achieve the above object, a door locking apparatus of the present invention comprises a housing installed inside a frame constituting a side portion of a door, a rotation shaft coupled to one side of the inside of the housing in the front and rear direction, A circular gear fitted to the second center shaft, and a cam provided on the one side of the circular gear, the circular gear being fitted to the center shaft and being given a rotational force from the cam, And a cam receiving groove formed at one side of the cam receiving groove so as to be able to return without rotating the cam, and an operation lever provided vertically to one side of the circular gear, A lower locking bar that projects and rotates at the lower end of the frame while applying a rotational force to the gear, And an upper locking bar which is vertically engaged with the other side of the circular gear and moves up and down toward and away from the upper end of the frame in a direction opposite to the lower locking bar according to the rotation direction of the circular gear.

In addition, a cam receiving groove may be formed at one side of the operating lever so that the rotated cam can return without rotating the circular gear.

In this case, a master key box for applying a rotational force to the rotary shaft may be installed on the rear surface of the frame facing outdoors.

In addition, an inclined guide groove may be formed at one side of the lower locking bar, and a guide member may be coupled to the end of the operating lever, which moves along the inclined guide groove when the operating lever rotates, .

In this case, it is preferable that a horizontal seating section for stably maintaining the position of the operating lever is formed at both ends of the inclined guide groove.

Meanwhile, the housing may further include a tension member for elastically supporting the other end of the operation lever to apply a constant operation force to the operation lever.

In this case, it is preferable that the tension member is a band-shaped member provided along the rotation section of the operation lever, and the central portion is provided in a shape of a curved shape curved toward the operation lever.

In addition, the lower locking bar and the upper locking bar each preferably comprise a fixed body engaged with the circular gear and a rotating body hinged to the fixed body in a rotatable manner in the lateral direction.

In addition, the hollow bolts closely attached to the inner surface of the frame can be fastened to the front and back surfaces of the housing on the same horizontal line.

In this case, it is preferable that the housing is firmly fixed to the inside of the frame through a fixing bolt which is inserted into one side of the frame and passes through the hollow bolts fastened to the front and rear surfaces of the housing in order, and then fastened to the other side of the frame.

In addition, the door handle fixing bracket is positioned on the front and back sides of the frame, the housing is fitted to one door handle fixing bracket, passes through the hollow bolts fastened to the front and rear surfaces of the housing, It may be fixed firmly to the inside of the frame through a fixing bolt fastened to the frame.

Meanwhile, the housing may further include a central locking bar which is horizontally engaged with the circular gear and moves in the lateral direction according to the rotation direction of the circular gear, and protrudes and retracts toward the side of the frame.

According to the present invention configured as described above, when the rotary shaft is rotated, the operation lever is rotated, and the upper locking bar and the lower locking bar are interlocked to simultaneously lock the upper and lower doors of the door. Thus, The door can be locked so that the convenience of use is very large.

In addition, the present invention is characterized in that when a cam receiving groove is formed at one side of an operating lever so that the cam rotated in one direction of rotation of the cam is rotated so as to return without rotating the circular gear, It is possible to expect an effect of greatly increasing the convenience in management of a plurality of doors by using the master key.

In addition, in the present invention, when the central locking bar is installed so as to horizontally engage with the circular gear, the central locking bar moves in the lateral direction according to the rotational direction of the circular gear so that the locking is also performed at the side of the door. There is an effect that the door can be more reliably locked in three directions.

1 is a front view of a door provided with a conventional door locking device
Fig. 2 is a sectional view showing an operating state of the door locking device of Fig. 1; Fig.
3 is a front view of a door provided with the door locking device of the present invention;
4 is an exploded perspective view of the door locking device of the present invention.
Fig. 5 is a sectional view showing a state in which the door locking device of the present invention is mounted on a frame of a door. Fig.
6 is a cross-sectional view showing a state in which the door locking device according to the present invention is mounted on a frame together with a door handle fixing bracket;
7A and 7B are sectional views showing an operating state of the door locking apparatus according to the present invention, respectively.
8 is a sectional view of the door locking apparatus according to another embodiment of the present invention in use;
Fig. 9 is a front view of a door provided with a door locking device according to Fig. 8; Fig.

The features and advantages of the present invention will become more apparent from the following detailed description of preferred embodiments with reference to the accompanying drawings. Prior to this, terms and words used in the present specification and claims are to be interpreted in accordance with the technical idea of the present invention based on the principle that the inventor can properly define the concept of the term in order to explain his invention in the best way. It must be interpreted in terms of meaning and concept.

Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings. The same reference numerals are used for the same components, and only the different portions are described for the sake of clarity.

3 and 4, the present invention is installed inside the frame 100 constituting the side portion of the door 1. As shown in Fig. An upper passage hole 101 and a lower passage hole 102 are formed at the upper and lower ends of the frame 100.

The housing 110 of the present invention is divided into a front body 111 and a rear body 112 which are formed as a front body and a rear body so as to be disassembled and assembled, Respectively. The housing 110 is installed inside the frame 100 such that the front body 111 faces outdoors and the rear body 112 faces the room.

The housing 110 is provided with a rotation shaft 120. The rotation shaft 120 is formed in a cylindrical shape and is installed in the front and rear direction on one side of the inside of the housing 110. A through hole 113 is formed in the front body 111 to receive the front end of the rotating shaft 120 and a first insertion slot 114 is formed in the rear body 112 to receive the rear end of the rotating shaft 120 . Accordingly, the rotation shaft 120 is installed in a state where the rear end is seated in the first insertion recess 114 and the front end is fitted in the through hole 113 and is rotatable in the left and right directions. A key groove 121 is formed in the front end of the rotation shaft 120 so that a rotational force can be transmitted from the outside using a key.

A cam 130 is provided on the outer circumferential surface of the rotating shaft 120. The cam 130 is coupled to the outer circumferential surface of the central portion of the rotating shaft 120, which is located inside the housing 110, in a direction perpendicular to the rotating shaft 120.

The center shaft 140 is coupled to the other side of the housing 110 in the front-rear direction. A second insertion groove 115 into which the front end of the central shaft 140 is inserted is formed at the other side of the front body 111 and a rear end of the central shaft 140 is inserted into the other side of the rear body 112. [ 3 insertion grooves 116 are formed.

A circular gear 150 and an operation lever 160 are inserted into the center shaft 140 in order. The circular gear 150 is disposed on the front body 111 side and the operation lever 160 is disposed on the rear body 112 side.

The operation lever 160 is rotated from the cam 130 to the left and right around the central axis 140. To this end, a cam receiving groove 161 is formed at one side of the actuating lever 160 facing the cam 130. Therefore, when the cam 130 located inside the cam receiving groove 161 is rotated to the left and right, the operating lever 160 rotates in the left-right direction around the central axis 140 according to the rotating direction. The operation lever 160 is fitted to the center shaft 140 with sufficient space and independently rotates regardless of the rotational direction of the center shaft 140.

On both sides of the circular gear 150, a lower locking bar 170 and an upper locking bar 180 are installed.

The lower locking bar 170 is a member having a length that can pass through the housing 110 and reach the lower end of the frame 100. The lower locking bar 170 is made of a material excellent in strength so as to perform a locking operation. The lower locking bar 170 is vertically engaged with one side of the circular gear 150 so that the lower locking bar 170 can be lifted and lowered to impart rotational force to the circular gear 150 through the lifting and lowering operation. In addition, the lower end of the lower locking bar 170 is inserted in the lower passage hole 102 formed at the lower end of the frame 100, and is locked / unlocked while the door is opened / closed through the lower passage hole 102 do.
A through hole 111a through which the lower locking bar 170 passes is formed at the lower end of the housing 110.

The lower locking bar 170 is given a lifting force from the rotating operating lever 160. To this end, an inclined guide groove 171 is formed at one side of the lower locking bar 170. At the end of the operation lever 160, when the operating lever 160 rotates, the lower locking bar 170 moves along the inclined guide groove 171, And a guide member 162 for increasing the strength of the locking bar 170 is coupled.

In this case, it is preferable that the guide member 162 is formed in a roller shape so as to minimize friction with the inclined guide groove 171 through rolling contact when the guide member 162 moves along the inclined guide groove 171.

In order to stably maintain the position of the operation lever 160 at the end of the inclined guide groove 171 without being moved along the inclined guide groove 171, both ends of the inclined guide groove 171 are provided with a horizontal seating section 171a may be formed. The horizontal seating section 171a provides a bent portion at the end of the inclined guide groove 171 to make it difficult for the operating lever 160 seated in the horizontal seating section 171a to enter the inclined guide groove 171. [ Therefore, when an external force is received in a state in which the operation lever 160 is seated in the horizontal seating section 171a, an accident that the locking state is released or the state is changed from the released state to the locking state while entering the inclined guide groove 171 .

The upper locking bar 180 is made of a material having high strength so as to be able to perform a locking operation as a member having a length reaching the upper end of the frame 100 through the housing 110. The upper locking bar 180 is vertically engaged with the other side of the circular gear 150 so as to be parallel to the lower locking bar 170 and rotates in a direction opposite to the lower locking bar 170 . The upper end of the upper locking bar 180 is inserted in the upper passage hole 101 formed at the upper end of the frame 100 and is locked or unlocked while the door is opened and closed through the upper passage hole 101.
A through hole 111b through which the upper locking bar 180 passes is formed at the upper end of the housing 110. [

When the rotary shaft 120 rotates, the cam 130 rotates along the rotary shaft 120 to push and rotate the operation lever 160. When the operation lever 160 rotates, the lower locking bar 170 interlocks Thereby rotating the circular gear 150. Then, the circular gear 150 lifts the upper locking bar 180.

The lower locking bar 170 and the upper locking bar 180 are respectively formed with fixed bodies 172 and 182 engaged with the circular gear 150 and rotary bodies hinged to the fixed bodies 172 and 182 so as to be rotatable in the left- 173 and 183, respectively. This is because the lengths of the lower locking bar 170 and the upper locking bar 180 are long and the upper locking hole 170 and the upper locking bar 180 are moved upward and downward, So that it is possible to prevent a phenomenon in which the lifting and lowering operation is not performed smoothly while being caught in the lower passage hole 102.

Therefore, even if the lower locking bar 170 and the upper locking bar 180 can not vertically rise and fall and are raised and lowered to one side while generating a left-right deviation, the upper passage hole 101 formed at the upper and lower ends of the frame 100, The lower locking bar 170 and the upper locking bar 180 are pushed by the inner passage wall of the lower passage hole 102 and the inner passage wall of the lower passage hole 102 so that the rotary bodies 173 and 183 are rotated in the opposite direction, And the inner wall surface of the lower passage hole 102 can smoothly be raised and lowered without a large friction.

The cam receiving recess 161 of the operating lever 160 is configured to rotate the cam 130 in one direction so that the cam 130 rotates in one direction without returning the circular gear 150, Section as a boundary.

In this case, when the cam 130 rotates in one direction and then returns to the original position, no contact occurs in the cam receiving groove 161, so that the operating lever 160 is not given a rotational force. If the operating lever 160 does not rotate, the circular gear 150 does not rotate, so that the lower locking bar 170 and the upper locking bar 180 also do not move up and down. Therefore, the circular gear 150 can be rotated in the opposite direction only when the cam 130 rotated in one direction is rotated in the opposite direction in a state in which the cam 130 is returned to the original position. When the circular gear 150 is rotated in the opposite direction, the lower locking bar 170 and the upper locking bar 180 return to their original positions while being lifted.

According to the present invention, a tension member 190 is provided in the housing 110 to elastically support the other end of the operation lever 160 to apply a predetermined operating force to the operation lever 160. The tension member 190 is a band-shaped member provided along the rotation section of the operation lever 160, and the center portion of the tension member 190 is curved toward the operation lever 160. Accordingly, since the actuating lever 160 is required to be operated by a tension force of the tension member 190, the actuating lever 160 does not move or rotate unless a large external force greater than a certain level is applied in the stop state. It prevents an accident from being switched. The operation lever 160 is rotated while elastically deforming the tension member 190. When the tension member 190 passes the bending point of the tension member 190, the operation lever 160 automatically rotates without applying an external force continuously due to the repulsive force of the tension member 190 .

In addition, the master key box 200 may be installed on the front surface of the frame 100 facing outdoors. An assembling hole 103 is formed on the front surface of the frame 100 in which the master key box 200 is fitted at a position corresponding to the rotation axis 120. A fitting protrusion 210 is formed at an end of the master key box 200 so as to be inserted into the key groove 121 of the rotary shaft 120 so as to apply a rotational force to the rotary shaft 120.

On the front and rear surfaces of the housing 110, a hollow bolt 300 closely attached to the inner surface of the frame 100 is fastened on the same horizontal line. A hollow bolt fastening hole 117 is formed in the front body 111 and the rear body 112 of the housing 110 so that the hollow bolt 300 is fastened. The hollow bolt 300 has a hollow portion formed in a straight line on the head portion and the screw portion. A tool through hole 104 is formed in the frame 100 corresponding to the hollow bolt 300 and a screw hole 105 is formed in the opposite frame 100 on which the tool through hole 104 is formed. A driver groove 310 is formed in the head of the hollow bolt 300 to rotate the hollow bolt 300 using a screwdriver. Therefore, the hollow bolt 300 can be rotated by inserting a driver into the tool through hole 104 from the outside of the frame 100.

5, when the head of the hollow bolt 300 is rotated so as to protrude from the housing 110 using the screwdriver, the head of the hollow bolt 300 is firmly attached to the inner surface of the frame 100 The housing 110 hangs inside the frame 100 while resting on the hollow bolt 300. In this state, the housing 110 is inserted into the tool through-hole 104 formed at one side of the frame 100, passes through the hollow bolts 300 in order, and then is fastened to the screw hole 105 formed on the other side of the frame 100 And is firmly fixed to the inside of the frame 100 through the fixing bolts 400. [

Meanwhile, as shown in FIG. 6, the door handle fixing bracket 100a may be positioned on the front and back sides of the frame 100, respectively. In this case, the housing 110 is inserted into one of the door handle fixing brackets 100a, passes through the hollow bolts 300 fastened to the front and rear surfaces of the housing 110, passes through the door handle fixing bracket 100a, And may be firmly fixed to the inside of the frame 100 through the fixing bolts 400 fastened to the frame 100.

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7A, when the key is inserted into the master key box from the outside of the door 1 and rotated in the counterclockwise direction, the fitting protrusion of the master key box fitted in the key groove 121 of the rotary shaft 120 rotates the rotary shaft 120 The cam 130 rotates counterclockwise while rotating in the counterclockwise direction. 7B, the cam 130 rotates in a counterclockwise direction and pushes the inner wall surface of the cam receiving groove 161 downward to rotate the operation lever 160 in the clockwise direction about the center shaft 140 .

The end of the operation lever 160 elastically deforms the tension member 190 while the operation lever 160 rotates clockwise and the guide member of the operation lever 160 moves along the inclined guide groove 171 And transmits the lower force to the lower locking bar 170.

The lower locking bar 170 having received the lower force is lowered by a certain distance and the rotation is stopped when the guide member 162 reaches the horizontal seating section 171a at the upper end of the inclined guide groove 171 and becomes no longer movable . Since the operation lever 160 in this state is in a state in which the guide member 162 is positioned in the horizontal seating section 171a and a certain tension force is being transmitted from the tension member 190, So that a stable posture can be maintained.

When the lower locking bar 170 is lowered, the circular gear 150 engaged with the lower locking bar 170 rotates in the counterclockwise direction and the upper locking bar 180 ). When the lower locking bar 170 is lowered as described above, the lower end of the lower locking bar 170 protrudes from the lower end of the frame 100 through the lower passage hole 102 of the frame 100, When the upper locking bar 180 is raised, the upper end of the upper locking bar 180 is inserted into the frame 100 through the upper passage hole 101 of the frame 100, So that locking is performed at the upper portion of the door 1.

The master key box does not release the key unless the key returns to its original position. Accordingly, when locking is performed in the upper and lower portions of the door 1, the key must be reversed to release the key from the master key box. According to the present invention, since the cam receiving groove 161 is formed around the one-directional rotation section of the cam 130, even if the key is reversed, the cam 130 rotates only in the opposite direction and does not contact the cam receiving groove 161 . Therefore, the cam 130 can be returned to its original position while the door is kept in the locked state without lifting and lowering the lower locking bar 170 and the upper locking bar 180, thereby releasing the key from the master key box.

In order to release the locking state, the key is inserted into the master key box and rotated in the clockwise direction. The above process is performed in the reverse order and the locking is released. When the key is returned to the original position, the key can be removed from the master key box .

As described above, since the door 1 can be locked and unlocked by installing the master key box as well as the general key box, it is possible to manage a plurality of doors using the master key.

As another embodiment of the present invention, a central locking bar 500 may be further installed inside the housing to engage the circular gear 150 horizontally, as shown in FIGS. The central locking bar 500 moves in a lateral direction according to the rotation direction of the circular gear 150, and protrudes and retracts toward the side of the frame 100. A side through hole 111c through which the central locking bar 500 can be inserted is formed on the side of the front body 111 and a side through which the end of the central locking bar 500 passes A through hole 106 is formed. It is needless to say that the door frame A must have a locking groove 2 corresponding to the central locking bar 500.

Therefore, when the circular gear 150 is rotated, the lower locking bar 170 and the upper locking bar 180 are lifted and lowered, and at the same time, the central locking bar 500 is moved in the left and right direction, Can be locked.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be takeners of ordinary skill in the art, And such variations are within the scope of the present invention.

100 ... frame 100a ... door handle fixing bracket
110 ... housing 120 ... rotating shaft
130 ... cam 140 ... center axis
150 ... circle gear 160 ... operating lever
161 ... Cam receiving groove 162 ... Guide member
170 ... lower locking bar 171 ... inclined guide groove
171a ... horizontal seating section 172,182 ... fixed body section
173, 183 ... rotating body portion 180 ... upper locking bar
190 ... tension member 200 ... master key box
300 ... hollow bolt 400 ... fixing bolt
500 ... Central locking bar

Claims

A housing installed inside the frame forming the side of the door;
A rotation shaft coupled to one side of the inside of the housing in the front-rear direction;
A cam provided on an outer circumferential surface of the rotary shaft;
A center shaft coupled to the other side of the inside of the housing in the longitudinal direction;
A circular gear fitted to the central shaft;
An operating lever having a cam receiving groove formed at one side thereof and having a cam receiving groove formed at one side thereof so as to allow the rotated cam to return without rotating the circular gear,
A lower locking bar provided vertically to one side of the circular gear and provided with a lifting force from a rotating operation lever to impart a rotational force to the circular gear while moving up and down at a lower end of the frame; And
And an upper locking bar installed perpendicularly to the other side of the circular gear in parallel with the lower locking bar and protruding and retracting to an upper end of the frame in a direction opposite to the lower locking bar according to a rotation direction of the circular gear. Locking device.

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The method according to claim 1,
Wherein a master key box for applying a rotational force to the rotary shaft is provided on the front face of the frame facing outdoors.

The method according to claim 1,
The lower locking bar is provided at one side thereof with an inclined guide groove, and at the end of the operating lever is coupled a guide member which moves along the inclined guide groove when the operating lever rotates, Door locking device.

5. The method of claim 4,
And a horizontal seating section for stably maintaining the position of the operating lever is formed at both ends of the inclined guide groove.

The method according to claim 1,
Wherein the housing further comprises a tension member for elastically supporting the other end of the operation lever to apply a predetermined operating force to the operation lever.

The method according to claim 6,
Wherein the tension member is a band-shaped member provided along a rotation section of the operating lever, and the central portion is provided in a curved shape curved toward the operating lever.

The method according to claim 1,
Wherein the lower locking bar and the upper locking bar each comprise a fixed body portion engaged with a circular gear and a rotating body portion hinged to the fixed body portion so as to be rotatable in a lateral direction.

The method according to claim 1,
Wherein a hollow bolt tightly attached to an inner side surface of the frame is fastened to the front and rear surfaces of the housing on the same horizontal line.

10. The method of claim 9,
Characterized in that the housing is firmly fixed to the inside of the frame through a fixing bolt which is inserted into one side of the frame and passes through the hollow bolts fastened to the front and rear surfaces of the housing in order and then fastened to the other side of the frame. Device.

10. The method of claim 9,
On the front and back sides of the frame, a door handle fixing bracket is positioned,
And the housing is fixed to the inside of the frame through a fixing bolt which is inserted into one side door handle fixing bracket and passes through the hollow bolts fastened to the front and rear sides of the housing in order and then fastened to the door handle fixing bracket of the other side Door locking device.

The method according to claim 1,
Wherein the housing further comprises a central locking bar which is horizontally engaged with the circular gear and protrudes and retracts toward the side of the frame while moving in the lateral direction according to the rotational direction of the circular gear.