KR20230112480A - Security Auxiliary Door on The Front Door - Google Patents

Abstract

The present invention relates to an auxiliary door mounted on a front door, and more specifically to the auxiliary door mounted on a front door provided with an external guard on the front side of a main opening part formed at a certain size on the front door, thereby reducing the size of the main opening part. By providing a guard plate on the front of the auxiliary door to create a level difference with the auxiliary door, crime prevention can be improved by blocking insertion of intrusion tools.

Description

Security auxiliary door mounted on the front door {Security Auxiliary Door on The Front Door}

The present invention relates to an auxiliary door mounted on a front door, and more particularly, to a method auxiliary door mounted on a front door that reduces the size of the main opening by providing an external guard on the front side of a main opening formed to a certain size in the front door, and having a guard plate on the front surface of the auxiliary door to form a step with the auxiliary door to block the insertion of an intrusion tool and improve security.

In general, a front door is hinged to one side of an entrance prepared to allow people to enter and exit a dwelling such as an apartment, an office, or a detached house to open and close the entrance.

In recent years, as couriers and delivery services are widely used, when a resident uses a courier service or delivery service, an engineer visits a resident's house. At this time, the resident opens the front door and exchanges the goods requested for the service.

However, as the methods of crime become sophisticated day by day, a criminal disguised as a delivery driver visits a resident's house and induces him to open the front door.

In order to prevent crime, a front door equipped with a small-sized viewing window is widely used so that outside visitors can be checked without opening the front door.

However, there is a disadvantage that visitors cannot be identified when the small viewing window is covered from the outside, and when disguised as a delivery driver, the front door must be opened inevitably to receive the goods, so there is a difficulty in being exposed to the threat of crime.

Therefore, the simple unmanned delivery storage for the front door posted in Korean Patent Publication No. 10-2018-0005645 includes a fixing plate provided with a fixing means for inducing attachment and detachment to the front door; It consists of; a receiving plate mounted on the fixing plate to be foldable along a hinge and supporting the delivery service from the bottom.

This courier storage rack has the advantage of being able to receive goods by opening only the storage plate without opening the front door.

However, since the front door has to be opened as much as the size of the receiving plate to receive the goods, a relatively large area is opened. When the storage plate is opened, an intruder can prevent an intruder from inserting a tool into the open area and attempt to open the front door with the open area.

In addition, when a criminal damages the courier storage rack for the purpose of intrusion, when a long skewer or rod is inserted between the fixing plate and the storage plate to damage it, an area the size of the storage plate is opened, and the open area can be used to open the front door. There is a disadvantage that security is vulnerable.

Therefore, the development of an auxiliary door mounted on the front door that can send and receive items of a certain size or less without opening the front door directly, and which can clearly identify visitors and maintain security is emerging.

KR 10-2018-0005645 (A) 2018.01.16. KR 10-2015-0085718 (A) 2015.07.24.

An object of the present invention to solve the above problems is to have an auxiliary door for opening or closing a main opening formed in a predetermined size on the front door, to have an outer guard having guard wings formed on the front side of the main opening, and to provide a security auxiliary door mounted on a front door with excellent crime prevention by providing a guard plate in contact with the front side of the auxiliary door to form a step with the auxiliary door to block the insertion of intrusion tools and excellent crime prevention.

Another object of the present invention is to provide an auxiliary security door mounted on a front door capable of checking a visitor without opening the front door or an auxiliary door by outputting an image taken by a camera provided on the front side of the front door to a monitor provided on the rear side.

Another object of the present invention is to provide a security auxiliary door mounted on a front door that further includes auxiliary openings through which visitors can be identified in the auxiliary door, has a grate shaft vertically crossing the auxiliary opening, and maintains security by closing the auxiliary openings of the screens provided on the bars, and at the same time, the screens are placed on the front and rear sides as the grille shaft rotates to clearly identify the visitor through a gap between the bars and block an intruder attempt.

Another object of the present invention is to provide a crime prevention auxiliary door mounted on a front door that is convenient for receiving relatively small-sized objects without opening the auxiliary door and has a crime prevention effect, since a part of the auxiliary opening can be opened by moving the grate shaft and the shield closing the auxiliary opening to one side.

The present invention for achieving the above object is the main opening 100 formed to a certain size to pass through the front and rear sides of the front door; An outer guard 200 disposed on the front side of the main opening 100 and having guard wings 210 protruding toward the center of the main opening 100 to reduce the size of the main opening 100; an auxiliary door 400 inserted into the main opening 100 and opening or closing the main opening 100; It is coupled to the front part of the auxiliary door 400, is formed in a smaller size than the auxiliary door 400, forms a step with the auxiliary door 400, and contacts the inner rim of the guard wing 210 A guard plate 410 located on the same plane as the outer guard 200; and an internal frame 300 disposed on a rear side of the main opening 100, closed and fixed to the auxiliary door 400 through a locking lever 430 provided thereon, and provided with a hinge 440 for vertically or horizontally folding the auxiliary door 400.

In addition, in the present invention, a camera 420 for photographing the front side of the front door is mounted on the front of the auxiliary door 400, and a monitor 421 for outputting an image captured by the camera 420 is provided on the rear of the auxiliary door 400.

In addition, the auxiliary window 500 provided in the auxiliary door 400 of the present invention includes an auxiliary opening 510 formed to pass through the front and rear sides of the auxiliary door 400; Arranged to cross the auxiliary opening 510 in the vertical direction, a shield 523 for closing the auxiliary opening 510 is formed, an open gear 521 is formed at the upper end, and a plurality of grate shafts 520 in which magnets 522 are formed at the lower end; A guide rail 530 having an upper rail 534 having a width larger than the diameter of the open gear 521; A first magnet 541 having a polarity different from that of the shaft magnet 522 is provided, and a second magnet 542 having the same polarity as the shaft magnet 522 is provided. ); and a slide groove 550 formed in a horizontal direction at a lower end of the auxiliary opening 510 and from which the magnet lever 543 protrudes rearward.

In addition, the rack 532 of the present invention is provided as much as the number of the grate shafts 520, has a length equal to 1/4 of the arc length of the open gear 521, and the rack 532. The rotation angle of the open gear 521 meshed with it rotates at a maximum of 90 °.

In addition, the second magnet 542 of the present invention is formed inclined, so that the repulsive force with the shaft magnet 522 acts in a diagonal direction, and the repulsive force between the second magnet 542 and the shaft magnet 522 moves the opening gear 521 in the opening direction on the upper rail 534.

In addition, when the opening magnet 540 of the present invention is moved in the opening direction with the first magnet 541 located at the top, the shield 523 is disposed in the front and rear directions of the auxiliary opening 510, and the auxiliary opening 510 is covered by the grate shaft 520. The auxiliary opening 510 is open.

The crime prevention auxiliary door mounted on the front door according to the present invention includes an auxiliary door that opens or closes a main opening formed in a predetermined size on the front door, an outer guard having guard wings formed on the front side of the main opening, and a guard plate in contact with the inner rim of the guard wing is provided on the front side of the auxiliary door to form a step with the auxiliary door, thereby blocking the insertion of intrusion tools and having excellent crime prevention properties.

In addition, the present invention has the advantage of being able to check the visitor without opening the front door or auxiliary door by outputting an image taken by a camera provided on the front side of the front door to a monitor provided on the rear side.

In addition, according to the present invention, the auxiliary door is further provided with auxiliary openings through which visitors can be identified, and a grate axis vertically crossing the auxiliary opening is provided, and the screen provided on the grate axis closes the auxiliary opening to maintain indoor security. At the same time, as the grate axis rotates, the screen is placed on the front and rear sides, so that the identity of the visitor can be clearly confirmed through the gap between the grate axes, and an intruder attempt can be prevented.

In addition, since the present invention can open a part of the auxiliary opening by moving the grate shaft and the screen closing the auxiliary opening to one side, it is convenient to receive relatively small-sized objects without opening the auxiliary door, and has the advantage of having a crime prevention effect.

1 is a perspective view of a state in which a crime prevention auxiliary door mounted on a front door according to a first embodiment of the present invention is viewed from the front side.
Figure 2 is a perspective view of a state viewed from the rear side of the auxiliary security door mounted on the front door according to the first embodiment of the present invention.
3 shows a longitudinal cross-section of a security auxiliary door mounted on a front door according to Example 1 of the present invention, (a) is a cross-sectional view of a state in which the auxiliary door closes the main opening, and (b) is a cross-sectional view of a state in which the auxiliary door is open and the main opening is open.
Figure 4 is a rear view of a state viewed from the rear side of the auxiliary security door mounted on the front door according to the second embodiment of the present invention.
Figure 5 is a perspective view showing a guide rail constituting a security auxiliary door mounted on the front door according to a second embodiment of the present invention.
Figure 6 shows a state in which the opening gear constituting the security auxiliary door mounted on the front door according to the second embodiment of the present invention is engaged with the rack, (a) is a longitudinal cross-sectional view, (b) is a planar cross-sectional view.
Figure 7 is a longitudinal cross-sectional view showing a state in which the opening magnet constituting the security auxiliary door mounted on the front door according to the second embodiment of the present invention is located in the slide groove.
Figure 8 is a rear view showing the operation of the grate shaft when the opening gear constituting the security auxiliary door mounted on the front door according to the second embodiment of the present invention is positioned on the lower rail.
Figure 9 is a rear view showing the operation of the grate shaft when the opening gear constituting the security auxiliary door mounted on the front door according to the second embodiment of the present invention is positioned on the upper rail.

Hereinafter, with reference to the accompanying drawings, a preferred embodiment of the present invention will be described so that those skilled in the art can easily implement it.

1 to 9, the security auxiliary door mounted on the front door according to the present invention is installed through the front door for the purpose of identifying a visitor or receiving an item,

A main opening 100 formed to a certain size to pass through the front and rear sides of the front door;

An outer guard 200 disposed on the front side of the main opening 100 and having guard wings 210 protruding toward the center of the main opening 100 to reduce the size of the main opening 100;

an auxiliary door 400 inserted into the main opening 100 and opening or closing the main opening 100;

It is coupled to the front part of the auxiliary door 400, is formed in a smaller size than the auxiliary door 400, forms a step with the auxiliary door 400, and contacts the inner rim of the guard wing 210 A guard plate 410 located on the same plane as the outer guard 200; and

It is disposed on the rear side of the main opening 100, closes and fixes the auxiliary door 400 through a locking lever 430 provided at the top, and vertically or horizontally folds the auxiliary door 400. Inner frame 300 equipped with a hinge 440.

In the present invention, the front side refers to the outdoor direction in which the visitor stands relative to the front door, and the rear side refers to the direction in which the resident stays indoors.

Further, in the present invention, the inner side means a direction toward the center, and the outer side means a radial direction extending outward in a direction opposite to the inner side.

In addition, in the second embodiment of the present invention, the opening direction means a direction in which the auxiliary opening 510 is opened while moving from one side to the other side. In the drawing of the present invention, the opening direction is shown from left to right, but through arbitrary design changes, when the opening magnet 540 moves from the right side to the left side, the auxiliary opening 510 can be opened.

The security auxiliary door mounted on the front door according to the present invention can clearly confirm the identity of an outside visitor without opening the front door, and if the visitor is a delivery driver, security and security are reinforced to receive a parcel or delivery item. It is an auxiliary door.

In the present invention, a main opening 100 having a certain size is drilled through the front door, and the main opening 100 can be opened or closed through the auxiliary door 400.

When the auxiliary door 400 is unfolded, the main opening 100 is opened to receive goods, and when the auxiliary door 400 is closed, the main opening 100 is closed, so that the front and rear sides cannot come and go, so security is maintained.

In the present invention, an external guard 200 is additionally provided on the front side of the main opening 100. The guard wings 210 of the outer guard 200 reduce the size of the main opening 100, and the front side of the auxiliary door 400 is disposed to be positioned on the same plane as the outer guard 200. A guard plate 410 is added.

Therefore, when viewed from the front side of the front door, the gap becomes the gap between the outer guard 200 and the guard plate 410. However, even if an intruder attempts to insert a thin and long intrusion tool such as an iron or a skewer for the purpose of damaging the auxiliary door 400 of the present invention, if inserted between the outer guard 200 and the guard plate 410, the tip of the intruder will collide with the front surface of the auxiliary door 400, so the intruder cannot be inserted to the rear side of the front door.

Therefore, the auxiliary door 400 forms a step due to the guard plate 410, and the insertion of an intrusion tool is blocked due to this step, so that an attempt at breakage by an intruder is fundamentally blocked, resulting in excellent crime prevention.

As shown in Figure 3, the security auxiliary door mounted on the front door according to the present invention is formed with a main opening 100 penetrating the front and rear sides of the front door. The main opening 100 is preferably formed at an upper height from the front door. Since it is necessary to receive goods from a delivery driver or to identify an intruder through the main opening 100, the main opening 100 is formed at an eye level convenient for receiving goods or checking an intruder.

The size of the main opening 100 is formed so that a commonly used small-capacity box can pass therethrough. It is preferably formed mainly of 360 mm × 260 mm, but is not necessarily limited thereto.

The main opening 100 is formed on the vertical center line of the front door opposite to the direction in which the handle or door lock is provided. When an intruder attempts to open the front door, the main opening 100 can easily attempt to open the door when the handle is close to the main opening 100. In order to prevent this, the main opening 100 is away from the handle or door lock of the front door. It is preferable to form such a distance.

Although the shape of the main opening 100 is shown in a rectangular shape, it is not limited thereto and can be transformed into various shapes.

In addition, the inner rim of the main opening 100 may come into contact with the outer rim of the auxiliary door 400 to be described later. Therefore, there is no gap between the inner surface of the main opening 100 and the outer surface of the auxiliary door 400, making it difficult to insert the intrusion tool.

As shown in Figures 1 and 3, the outer guard 200 of the present invention is configured to be coupled to the front side of the main opening (100). The outer guard 200 is also opened at the center, and the opened portion communicates with the main opening 100.

The outer guard 200 is further formed with guard wings 210 toward the center of the main opening 100 . The guard wings 210 protrude to the inside of the outer guard 200, and reduce the open portion of the center side of the outer guard 200.

Therefore, since the guard wings 210 cover a part of the outer edge of the auxiliary door 400, insertion of an intrusion tool into the gap between the main opening 100 and the auxiliary door 400 is blocked.

Since the outer guard 200 is provided coupled to the front surface of the main opening 100, it protrudes more than the front surface of the front door.

In addition, the guard plate 410 coupled to the front of the auxiliary door 400 to be described later is coupled to form the same plane as the outer guard 200. The outer guard 200 and the guard plate 410 are on the same plane, and are in contact with the outer edge of the guard plate 410 and the inner edge of the guard wing 210.

Therefore, in order to insert an intrusion tool, it must be inserted into the gap between the guard wing 210 and the guard plate 410, but even if the insertion is successful, the main opening 100 and the auxiliary door 400 must pass through in order to be inserted to the rear side of the front door. However, since the gap between the main opening 100 and the auxiliary door 400 forms a step with the gap between the guard wings 210 and the guard plate 410, an attempt to insert an intrusion tool can be blocked.

As shown in FIGS. 1 to 3 , the auxiliary door 400 that opens or closes the main opening 100 is formed to have the same size as the main opening 100 . An outer edge of the auxiliary door 400 is in contact with an inner edge of the main opening 100 .

A guard plate 410 is coupled to the front of the auxiliary door 400 . The guard plate 410 is configured to close the centrally opened portion of the outer guard 200 . That is, the main opening 100 may be closed by the auxiliary door 400, and the open portion of the outer guard 200 may be closed by the guard plate 410.

The guard plate 410 covers a part of the central side of the auxiliary door 400, and the guard wing 210 covers a part of the outer edge of the auxiliary door 400 that is not covered by the guard plate 410.

The auxiliary door 400 is coupled to an inner frame 300 and a hinge 440 to be described later at the bottom. The hinge 440 is designed to rotate up to 90°. The hinge 440 is provided on the rear side of the auxiliary door 400 .

The auxiliary door 400 closing the main opening 100 is placed vertically while moving toward the rear side while rotating through the hinge 440. Therefore, in the case of receiving or receiving goods, it is also used as a supporting role for placing goods on the front of the auxiliary door 400.

Since the guard plate 410 is attached to the front of the auxiliary door 400, objects are placed on the guard plate 410.

Since the auxiliary door 400 is rotated to open the main opening 100 and an object to be received is placed on the guard plate 410, the guard plate 410 can support the object.

A locking lever 430 for fixing the closed state of the auxiliary door 400 is provided at an upper end of the rear surface of the auxiliary door 400 . The locking lever 430 connects the inner frame 300 and the auxiliary door 400 to be described later and fixes the auxiliary door 400 so as not to be opened.

The locking lever 430 is provided with a locking member, and the locking member is inserted into a locking groove formed in the inner frame 300 to fix the auxiliary door 400 . The latch receives an elastic force by a spring and prevents it from being separated from the locking groove.

When the locking lever 430 is pulled downward, the spring is compressed and the latch is separated from the locking groove, and the auxiliary door 400 can be opened.

As shown in FIGS. 2 and 3 , the inner frame 300 coupled to the rear side of the main opening 100 is formed with an open center side. The inner frame 300 is provided with a hinge 440 for rotating the auxiliary door 400 at the bottom, and a locking groove into which the locking lever 430 is inserted is formed at the top.

The opening portion inside the inner frame 300 has the same size as the main opening 100 and may communicate therewith.

In the crime prevention auxiliary door mounted on the front door according to the present invention, the main opening 100 is formed at the front door, an auxiliary door 400 for opening or closing the main opening 100 is provided, and an outer guard 200 equipped with a guard wing 210 covering a gap between the main opening 100 and the auxiliary door 400 is provided on the front side of the main opening 100, the main door The inner frame 300 is provided on the rear side of the sphere 100 .

Therefore, when looking at the front door from the front side where the visitor is located, a gap exists between the guard wings 210 and the guard plate 410, and when looking at the front door from the rear side where the resident is located, there is a gap between the main opening 100 and the auxiliary door 400.

Due to the configuration of the guard plate 410, the shape of the longitudinal section of the guard plate 410 and the auxiliary door 400 forms a step.

Since the gap between the guard wings 210 and the guard plate 410 does not coincide with the gap between the main opening 100 and the auxiliary door 400, an intrusion tool cannot be inserted from the front side of the front door to the rear side of the front door.

Due to the configuration of the guard wing 210, a gap passing through the front and rear sides of the front door forms a step to block an attempt to insert an intrusion tool, thereby improving crime prevention.

In the present invention, an intrusion attempt by an intruder can be blocked, and a visitor can be identified without opening the auxiliary door 400 .

In the first embodiment of the present invention, the identity of the visitor is confirmed through the camera 420, and in the second embodiment, the auxiliary window 500 is provided in the auxiliary door 400 to check the visitor.

As shown in FIGS. 1 and 2, the security auxiliary door mounted on the front door according to the first embodiment of the present invention is configured to check the visitor on the front side of the front door without opening the auxiliary door 400. A camera 420 is provided.

The camera 420 is provided on the front side of the auxiliary door 400 . The camera 420 may photograph the front side of the front door at an irradiation angle.

A monitor 421 outputting an image taken by the camera 420 is provided at a rear side of the auxiliary door 400 .

A visitor is photographed by the camera 420, and an indoor resident can check the visitor through the monitor 421.

Therefore, since the visitor can be checked through the monitor 421 without opening the auxiliary door 400, the auxiliary door 400 can be opened after clearly confirming the identity of the visitor.

4 to 9, the auxiliary window 500 is provided in the auxiliary door mounted on the front door according to the second embodiment of the present invention. The auxiliary window 500 is provided on the auxiliary door 400 so that visitors can be identified through the auxiliary window 500 without opening the auxiliary door 400 .

The auxiliary window 500 provided in the auxiliary door 400 is

Auxiliary opening 510 formed to pass through the front and rear sides of the auxiliary door 400;

Arranged to cross the auxiliary opening 510 in the vertical direction, a shield 523 for closing the auxiliary opening 510 is formed, an open gear 521 is formed at the upper end, and a plurality of grate shafts 520 in which magnets 522 are formed at the lower end;

A guide rail 530 having an upper rail 534 having a width larger than the diameter of the open gear 521;

A first magnet 541 having a polarity different from that of the shaft magnet 522 is provided, and a second magnet 542 having the same polarity as the shaft magnet 522 is provided. ); and

It includes; a slide groove 550 formed in a horizontal direction at the lower end of the auxiliary opening 510 and protruding to the rear side of the magnet lever 543.

The auxiliary window 500 closes the auxiliary opening 510 formed in the auxiliary door 400 through the lattice shaft 520 and the screen 523, and while the lattice shaft 520 and the screen 523 rotate, only a part of the auxiliary opening 510 is opened to confirm the identity of the visitor and at the same time to block an intruder's attempt to break in if the robber turns unexpectedly.

As shown in FIGS. 6 to 9 , the auxiliary window 500 has auxiliary openings 510 penetrating the front and rear sides of the auxiliary door 400 . Since the auxiliary opening 510 is provided inside the auxiliary door 400, it is formed in a smaller size than the main opening 100.

As shown in FIGS. 4 and 6 to 9 , a plurality of grate shafts 520 for opening or closing the auxiliary opening 510 are disposed in a vertical direction of the auxiliary opening 510 .

The lattice shaft 520 is formed as a long cylindrical shaft, and is formed longer than the height of the auxiliary opening 510, so that the upper and lower ends of the lattice shaft 520 are longer than the upper and lower ends of the auxiliary opening 510.

An open gear 521 is formed at the upper end of the grate shaft 520, and a shaft magnet 522 is formed at the lower end.

The open gear 521 is mounted on and moved on a guide rail 530 to be described later, and the gear is formed to engage with a rack 532 formed on the guide rail 530. Therefore, when the open gear 521 moves left and right, since it is meshed with the open gear 521 and the rack 532, it can move left and right while rotating around the grate shaft 520 as a central axis.

The diameter of the open gear 521 is formed equal to the width of the lower rail 531 to be described later, but smaller than the width of the upper rail 534. When the open gear 521 moves on the lower rail 531, it engages with the rack 532 and rotates, and when it moves on the upper rail 534, it moves without interference, so it is formed with a smaller diameter than the width of the upper rail 534.

A shaft magnet 522 is provided at the lower end of the grate shaft 520, and the shaft magnet 522 is a magnet that moves or raises the bar shaft 520 by acting with an open magnet 540 to be described later by attraction or repulsive force.

The axis magnet 522 has a different polarity from the first magnet 541 to be described later and acts as an attractive force with the first magnet 541, and has the same polarity as the second magnet 542 and acts as a repulsive force with the second magnet 542.

The lattice shafts 520 are arranged in the vertical direction to cross the auxiliary opening 510 and are spaced apart from each other in the horizontal direction of the auxiliary opening 510 and arranged in plurality.

A shielding film 523 is formed on the outer surface of the lattice shafts 520 to close the space between the lattice shafts 520 . The shielding film 523 has the same length as the lattice shaft 520 in the vertical direction.

Although the shielding film 523 is shown as being formed on the left and right sides with respect to the grate shaft 520, it may be formed on only one side as long as the shielding film 523 can close the space between the grate shafts 520.

The shielding film 523 is located in a state in which the space between the grate shafts 520 is closed, and when the grate shaft 520 rotates 90°, the shielding film 523 also rotates to open the space between the grate shafts 520.

The space between the lattice shafts 520 is opened so that an indoor occupant can verify the identity of an outdoor visitor.

In addition, even if the space between the lattice shafts 520 is opened, the lattice shaft 520 still crosses and blocks the space of the auxiliary opening 510 vertically, so that even if a visitor suddenly turns into a robber, the lattice shaft 520 plays the role of a lattice, so an intrusion attempt can be prevented.

In addition, when the identity of the visitor is confirmed, the grate shaft 520 is lifted upward and the opening gear 521 is moved to an upper rail 534 to be described later, and the auxiliary opening 510 can be opened by moving the grate shaft 520 in the opening direction. In this case, since the grate shaft 520 is moved upward by a second magnet 542 to be described later, an open gear 521 is located on an upper rail 534 to be described later. Since the opening gear 521 of the grate shaft 520 is located on the upper rail 534 to be described later, it is not engaged with the rack 532 and is free to rotate and move.

At this time, the shield 523 may be positioned to face the left and right sides and then be positioned to face the front and rear sides of the front door. As a means for this, a resident can directly adjust it by hand, or it can be implemented in a sliding manner by tilting the end of the screen 523.

As shown in FIGS. 5, 6, 8 and 9, the guide rail 530 disposed above the grate shaft 520 is moved left and right by inserting an opening gear 521 provided at the top of the grate shaft 520.

The guide rail 530 is formed in a horizontal direction at an upper portion of the auxiliary door 400 and may communicate with the auxiliary opening 510 .

The guide rail 530 is composed of an upper rail 534 and a lower rail 531. The lower rail 531 limits the rotation angle and linear movement range of the open gear 521, and the upper rail 534 can freely rotate and move without limiting the rotation angle of the open gear 521.

First, a plurality of racks 532 engaged with the open gear 521 are formed at a portion of the lower rail 531 . The rack 532 may be provided to correspond to the number of the grate shafts 520 provided.

The racks 532 are formed on the lower rail 531 while being spaced apart from each other by the mutually spaced distance of the grate shafts 520 .

In addition, the length of each rack 532 is formed by 1/4 of the circular arc of the open gear 521, so that the open gear 521 limits rotation to a maximum of 90°.

The rack 532 is formed in a negative angle with respect to the lower rail 531, and the point where the part of the rack 532 ends protrudes toward the open gear 521 more than the valley of the rack 532. That is, the trough of the rack 532 is formed as an intaglio that goes deeper than the mountain.

The end of the rack 532 is located on the same line as the peak of the rack 532, and serves as a stopper to stop the open gear 521 from rotating any further.

The width of the lower rail 531 is smaller than the diameter of the open gear 521 to limit the rotation of the open gear 521, and the width from the valley of the rack 532 to one side of the lower rail 531 is preferably formed equal to the diameter of the open gear 521. This is because the rotation of the open gear 521 can be limited in correspondence with the diameter of the open gear 521 .

When the auxiliary opening 510 is closed, the opening gear 521 is skewed toward the opposite direction to the opening direction of the rack 532 and meshes with it.

The opening gear 521 moves in the opening direction along the rack 532 to open the space between the grate shafts 520 by positioning the shield 523 on the front and rear sides of the front door. The grate shaft 520 moves in the opening direction by the length of the rack 532 and rotates because the opening gear 521 is meshed with the rack 532 . The open gear 521 moves as much as the length of the rack 532, and since the length of the rack 532 is 1/4 of the diameter of the open gear 521, it can rotate only by a maximum of 90°.

A pedestal 533 supporting the lower end of the open gear 521 is formed at the lower end of the lower rail 531 . The width of the pedestal 533 is greater than or equal to the diameter of the grate shaft 520, but smaller than the diameter of the open gear 521. Therefore, the lower end of the open gear 521 comes into contact with the upper surface of the pedestal 533, and the pedestal 533 serves to support the open gear 521 so that it does not fall off the guide rail 530.

The upper rail 534 is located above the lower rail 531 and has a wider width than the lower rail 531 .

The upper rail 534 communicates with the lower rail 531 , and the open gear 521 may communicate between the upper rail 534 and the lower rail 531 .

The width of the upper rail 534 is formed to be larger than the diameter of the open gear 521, so that the open gear 521 can freely rotate or reciprocate without being caught by other structures when positioned on the upper rail 534.

Since the opening gear 521 located on the upper rail 534 is not jammed, the range of movement is not limited when moving in the opening direction, so it can move to the end of the opening direction, and can rotate freely while moving in the opening direction.

As shown in FIGS. 7 to 9 , the opening magnet 540 provided under the auxiliary opening 510 moves the grate shaft 520 .

The open magnet 540 is provided with magnets with two polarities. A first magnet 541 having a polarity different from that of the shaft magnet 522 and having an attractive force acting thereon and a second magnet 542 having the same polarity as the shaft magnet 522 and having a mutual repulsive force acting thereon are provided.

A magnet lever 543 is formed between the first magnet 541 and the second magnet 542 so that a resident can grip and slide it by hand, and the positions of the first magnet 541 and the second magnet 542 can be reversed through the magnet lever 543.

Since the first magnet 541 has an attractive force with the shaft magnet 522, the movement of the first magnet 541 induces the grate shaft 520 to follow.

After the first magnet 541 is positioned adjacent to the axis magnet 522, when the opening magnet 540 is moved in the opening direction, the grate shaft 520 moves along the first magnet 541, and the opening gear 521 meshed with the rack 532 rotates the grate shaft 520. Since the lattice shaft 520 is stopped after rotating at a maximum of 90 °, the rotation and movement of the lattice shaft 520 in the opening direction is restricted, and the first magnet 541 continuously moves in the opening direction to move and rotate another adjacent lattice shaft 520.

As the first magnet 541 moves in the opening direction, all of the grate shafts 520 sequentially move in the opening direction and rotate at a maximum of 90°.

When the auxiliary opening 510 is opened through the first magnet 541, the lattice shaft 520 rotates to open only the auxiliary opening 510 of the portion closed through the screen 523, and the lattice shaft 520 blocks the auxiliary opening 510 like a bar.

The second magnet 542 has the same polarity as the axial magnet 522 so that a repulsive force acts thereon. In addition, the second magnet 542 has an obliquely inclined shape and forms an inclined downward in the opening direction. Accordingly, the direction of the repulsive force of the second magnet 542 may be directed toward the opening direction and the upward direction at the same time.

After inverting the second magnet 542 to the top through the magnet lever 543, when the second magnet 542 is moved in the opening direction, the grate shaft 520 rises due to the repulsive force between the second magnet 542 and the shaft magnet 522 in the upward direction, and the opening gear 521 is positioned on the upper rail 534 and meshes with the rack 532. is released, and the grate shaft 520 moves along the upper rail 534 in the opening direction due to the repulsive force in the opening direction.

As the second magnet 542 continuously moves in the opening direction, all of the grate shafts 520 are raised, and the opening gear 521 moves to the upper rail 534 and moves in the opening direction. At this time, the shielding film 523 may be positioned toward the front and rear sides of the auxiliary opening 510 .

Accordingly, when the auxiliary opening 510 is opened through the second magnet 542, a large area of the auxiliary opening 510 is opened to receive a small-sized product.

When opening the auxiliary opening 510 through the second magnet 542, the identity of the visitor may be confirmed by first opening the auxiliary opening 510 through the first magnet 541.

When opening through the first magnet 541, only the shield 523 is rotated and opened, so security is maintained, the identity of the visitor is confirmed, and the auxiliary opening 510 is opened again through the second magnet 542. Since the auxiliary opening 510 is opened without opening the auxiliary door 400, it is possible to perform tasks such as receiving goods.

As shown in FIGS. 4 and 7 to 9 , a slide groove 550 having a length in the horizontal direction of the auxiliary opening 510 is formed at the bottom of the auxiliary door 400 . The slide groove 550 has a configuration in which the magnet lever 543 of the opening magnet 540 protrudes toward the rear side, and guides the sliding direction of the opening magnet 540 .

Therefore, the opening magnet 540 can move in the opening or closing direction along the slide groove 550, and the occupant can control the opening of the auxiliary opening 510 by holding the magnet lever 543 protruding toward the rear side of the slide groove 550.

The auxiliary window 500 is configured to send and receive small-sized objects without directly opening and closing the auxiliary door 400, and can maintain crime prevention while directly confirming the identity of a visitor.

The occupant of the room can control the opening of only part of the auxiliary opening 510 or the entire opening while holding the magnet lever 543 and moving it in the opening direction. This can be controlled by selecting a magnet that inverts the first magnet 541 and the second magnet 542 to be located at the top.

First, by moving the first magnet 541 upward and moving in the opening direction, the auxiliary opening 510 is blocked by the lattice shaft 520, and only a part of it can be opened while security is maintained, and the identity of the visitor can be confirmed.

In order to fully open the auxiliary opening 510 after confirming the identity of the visitor, the positions of the first magnet 541 and the second magnet 542 are reversed by holding and rotating the magnet lever 543, and when the second magnet 542 is moved in the opening direction from the upper position, the grate shaft 520 moves upward and in the opening direction, and the auxiliary opening 510 is opened so that objects can be exchanged.

The auxiliary window 500 is useful when identifying a visitor or receiving a small-sized object without opening the main opening 100 .

100: main opening 200: outer guard 210: guard wing 300: inner frame
400: auxiliary door 410: guard plate 420: camera 421: monitor
430: lock lever 440: hinge
500: auxiliary window 510: auxiliary opening
520: lattice shaft 521: open gear 522: shaft magnet 523: screen
530: guide rail 531: lower rail 532: rack 533: support 534: upper rail
540: open magnet 541: first magnet 542: second magnet 543: magnet lever 550: slide groove

Claims (6)

A main opening 100 formed to a certain size to pass through the front and rear sides of the front door;
An outer guard 200 disposed on the front side of the main opening 100 and having guard wings 210 protruding toward the center of the main opening 100 to reduce the size of the main opening 100;
an auxiliary door 400 inserted into the main opening 100 and opening or closing the main opening 100;
It is coupled to the front part of the auxiliary door 400, is formed in a smaller size than the auxiliary door 400, forms a step with the auxiliary door 400, and contacts the inner rim of the guard wing 210 A guard plate 410 located on the same plane as the outer guard 200; and
It is disposed on the rear side of the main opening 100, closes and fixes the auxiliary door 400 through a locking lever 430 provided at the top, and folds the auxiliary door 400 vertically or horizontally. Inner frame 300 provided with a hinge 440,
A security auxiliary door mounted on the front door.
According to claim 1,
A camera 420 for photographing the front side of the front door is mounted on the front side of the auxiliary door 400,
A monitor 421 outputting an image taken by the camera 420 is provided on the rear side of the auxiliary door 400
A security auxiliary door mounted on the front door.
According to claim 1,
The auxiliary window 500 provided in the auxiliary door 400 is
Auxiliary opening 510 formed to pass through the front and rear sides of the auxiliary door 400;
Arranged to cross the auxiliary opening 510 in the vertical direction, a shield 523 for closing the auxiliary opening 510 is formed, an open gear 521 is formed at the upper end, and a plurality of grate shafts 520 in which magnets 522 are formed at the lower end;
A guide rail 530 having an upper rail 534 having a width larger than the diameter of the open gear 521;
A first magnet 541 having a polarity different from that of the shaft magnet 522 is provided, and a second magnet 542 having the same polarity as the shaft magnet 522 is provided. ); and
A slide groove 550 formed in the horizontal direction at the lower end of the auxiliary opening 510 and protruding to the rear side of the magnet lever 543;
A security auxiliary door mounted on the front door.
According to claim 3,
The rack 532 is provided as much as the number of the grate shafts 520 and has a length equal to 1/4 of the arc length of the open gear 521,
The rotation angle of the open gear 521 meshed with the rack 532 rotates at a maximum of 90 °
A security auxiliary door mounted on the front door.
According to claim 3,
The second magnet 542 is inclined so that the repulsive force with the axis magnet 522 acts in a diagonal direction,
With the repulsive force of the second magnet 542 and the shaft magnet 522, the opening gear 521 moves in the opening direction in the upper rail 534.
A security auxiliary door mounted on the front door.
According to claim 3,
When the opening magnet 540 is moved in the opening direction with the first magnet 541 located at the top, the shielding film 523 is disposed in the front and rear directions of the auxiliary opening 510, and the auxiliary opening 510 is covered by the grate shaft 520,
When the opening magnet 540 is moved in the opening direction in a state where the second magnet 542 is located at the top, the auxiliary opening 510 is opened.
A security auxiliary door mounted on the front door.