KR102664317B1 - emergency door with double open structure - Google Patents

Abstract

An emergency door with a double open structure is opened. The emergency door of the double open structure of the present invention includes an outer door portion that is installed to be rotatable in only one direction relative to the door frame, opens or closes the entrance, and has a cutout on the inside; and an inner door portion that is installed to be rotatable only in the other direction opposite to the one direction with respect to the outer door portion to open or close the incision, and the incision is spaced a certain distance upward from the lower end of the outer door. It is characterized by being formed in a given position. According to the present invention, the cutout is formed at a position spaced a certain distance upward from the lower end of the outer door, so that flooding occurs at a height above a certain level on the outdoor side (second area), and the user pulls the inner door to open the cutout. Even if the is opened, the inflow of water from the second area into the first area (indoor side) can be further minimized.

Description

Emergency door with double open structure}

The present invention relates to an emergency door with a double open structure that has a structure that allows entry and exit in both directions, allowing people to escape quickly in the event of flooding, thereby minimizing the occurrence of casualties.

Due to climate change, localized heavy rain is gradually occurring, and as a result, in low-lying areas or underdeveloped areas where drainage is inadequate, rainwater flows instantaneously into underground households, underground shopping malls, and underground parking lots, causing many casualties.

Currently, the fire door structure is designed to be opened by pushing it from the inside out, so when water rises above a certain level on the outside, it is difficult for an ordinary adult to open the fire door by pushing it from the inside out.

To solve this problem, Republic of Korea Patent Publication No. 10-2021-0062936 discloses an emergency escape fire door that can be opened in both directions.

However, in this conventional fire door, the bottom of the inner door located on the inside and the bottom of the outer door on the outside are made identical to each other. For example, if the outdoor space is flooded and a person opens the inner door from indoors, Currently, a major problem is bound to arise where water from the outdoor space flows directly into the indoor space.

In addition, in a conventional fire door, the bottom of the inner door located on the inside and the bottom of the outer door on the outside are made the same, so water pressure is applied to all parts of the inner door located on the inside and the outer door located on the outside corresponding to the flood height. This may cause distortion in the water pressure applied areas of the outer and inner doors, making it difficult for the inner door to open properly.

Republic of Korea Patent Publication No. 10-2021-0062936 (published on June 1, 2021)

The present invention was developed to solve the above-described conventional problems. It has a structure that allows for two-way entry and exit, so that not only can people minimize casualties by allowing people to escape quickly in the event of flooding, but also the lower part of the inner door and the lower part of the inner door. By creating a vertical separation distance between the lower parts of the outer door, the inflow of water from the outdoor area into the indoor area can be minimized even when the inner door is opened, and an emergency door with a double open structure is provided to minimize the occurrence of twisting of the inner door. The purpose is to

According to one aspect of the present invention, an outer door portion is installed to be rotatable in only one direction relative to the door frame, opens or closes the entrance, and has an incision on the inside; and an inner door portion that is installed to be rotatable only in the other direction opposite to the one direction with respect to the outer door portion to open or close the incision, and the incision is spaced a certain distance upward from the lower end of the outer door. An emergency door with a double open structure formed in a given position is provided.

The distance between the lowermost side of the incision and the lower end of the outer door is preferably 5 to 30 cm.

When the inner door is opened, it may further include a damper installed to connect the outer door and the inner door to prevent the inner door from opening rapidly.

The damper may have a hydraulic cylinder structure.

The inner door portion includes an inner door that has a cross-sectional shape corresponding to the incision and is rotatably connected to the outer door portion; a door handle provided on the inner door, having a locking protrusion inserted into or removed from a locking groove formed on an inner wall of the incision, and a lever operating to insert or remove the locking protrusion into or out of the locking groove; and a locking part that can be inserted into or removed from the door handle and allows or restricts the operation of the lever.

The locking unit may include a locking pin that is inserted into or removed from the pin insertion hole of the door handle to restrain or allow the operation of the lever.

The inner door portion includes an inner door that has a cross-sectional shape corresponding to the incision and is rotatably connected to the outer door portion; and a rotating shaft rotatably provided on the inner door and rotatably coupled to the inner door, and a lock that protrudes on one side of the rotating shaft and is inserted into or removed from the locking groove formed on the inner wall of the incision according to the rotation of the rotating shaft. a protrusion, a lever protruding on the other side of the rotation shaft to rotate the rotation shaft, and a plurality of protruding pieces protruding on the outer surface of the rotation shaft and protruding in an inclined direction with respect to the direction in which the locking protrusion protrudes from the outer surface of the rotation shaft. It may include a door handle.

When the lever is rotated so that the locking protrusion is separated from the locking groove, the plurality of protruding pieces press the inner wall of the incision in a lever manner so that the inner wall of the incision is spaced apart from the inner door by a certain amount, and the plurality of protrusions The protruding pieces may be formed to be spaced apart from each other in directions on both sides of the locking protrusion based on the longitudinal direction of the rotation axis.

The inner door rotates to open the incision through a pulling operation in a first area on one side with respect to the outer door, and forcibly pushes the inner door in a second area on the opposite side of the first area. A forced opening may be further provided to open the incision.

The forced opening portion includes a forced opening rod inserted into a first rod insertion hole formed in the inner door and a second rod insertion hole provided in the door handle; a knob integrally connected to an end of the forcibly opening rod, disposed in the second region, and having an enlarged cross-sectional area compared to the forcibly opening rod; and an elastic member, one end of which is supported on one side of the outer door portion facing the second area and the other end of which is supported by the knob, to elastically support the forced opening rod and the knob, and the knob is connected to the door handle. When pushed to the side, the end of the forced opening rod is further inserted into the door handle and the lever can be pressed to release the locking protrusion from being already inserted into the locking groove.

The inner door rotates to open the incision through a pulling operation in a first area on one side with respect to the outer door, and forcibly pushes the inner door in a second area on the opposite side of the first area. A forced opening may be further provided to open the incision.

The forced opening portion includes a forced opening rod that is inserted into a first rod insertion hole formed in the inner door and is provided to press the lever in a direction from the second area toward the first area; a knob integrally connected to an end of the forcibly opening rod, disposed in the second region, and having an enlarged cross-sectional area compared to the forcibly opening rod; and an elastic member, one end of which is supported on one side of the outer door portion facing the second area and the other end of which is supported by the knob, to elastically support the forced opening rod and the knob, and the knob is connected to the door handle. When pushed to the side, the end of the forced opening rod presses the lever to rotate the rotation shaft and release the state in which the locking protrusion has already been inserted into the locking groove.

The forced opening portion is provided in a form that surrounds the elastic member between one side of the inner door facing the second area and the knob, and has a forced opening limit capable of restricting the end of the forced opening rod from approaching the door handle. Additional absences may be included.

The forced opening limiting member has one end in the width direction supported on one side of the inner door facing the second area and the other end in the width direction supported by the knob, and a gap is formed between both ends in the longitudinal direction, so that the overall shape is C-shaped. It may be prepared to have a cross-sectional structure.

The inner door portion includes an inner door that has a cross-sectional shape corresponding to the incision and is rotatably connected to the outer door portion; and a door handle provided on the inner door so that at least a portion is inserted into or removed from a locking groove formed on the inner wall of the incision through a user's action to open or close the incision, wherein the inner door has the door handle. A first folding door provided; And it may include a second folding door rotatably connected to the outer door part and rotatably connected to the first folding door.

According to the emergency door of the double open structure of the present invention described above, the cutout is formed at a position spaced a certain distance upward from the lower end of the outer door, thereby causing flooding at a height above a certain level on the outdoor side (second area). Therefore, even if the user pulls the inner door to open the incision, the flow of water from the second area into the first area (inside the room) can be further minimized.

In addition, water in the second area due to flooding minimizes water pressure acting on the inner door, thereby minimizing distortion of the inner door, allowing the user to easily open the inner door.

In addition, a forced opening is provided in the second area, which is opposite to the first area, to open the incision by forcibly pushing the inner door, so that in an emergency situation, there is no choice but to evacuate from the second area to the first area. It can protect people in the situation from casualties.

In addition, even in a situation where foreign matter stuck in the contact area between the outer door and the inner door has solidified, the lever principle can be applied to allow the inner door to rotate smoothly.

1 is a front view and a plan cross-sectional view showing an emergency door of a double open structure according to a first embodiment of the present invention;
Figure 2 is a plan cross-sectional view showing the opening operation of the outer door portion and the inner door portion in Figure 1;
Figure 3 is a plan cross-sectional view showing an emergency door of a double open structure according to a second embodiment of the present invention;
Figure 4 is a view showing a modified example of an emergency door with a double open structure according to a second embodiment of the present invention;
Figure 5 is a front view and partial plan cross-sectional view showing an emergency door of a double open structure according to a third embodiment of the present invention;
Figure 6 is a perspective view showing the door handle of an emergency door with a double open structure according to a third embodiment of the present invention;
Figure 7 is a perspective view showing the door handle rotating due to the operation of the forced opening part of Figure 3 in the emergency door of the double open structure according to the third embodiment of the present invention;
Figure 8 is a front view and a plan cross-sectional view showing an emergency door of a double open structure according to a fourth embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in more detail with reference to the attached drawings. However, the present invention is not limited to the embodiments disclosed below and will be implemented in various different forms. These embodiments only serve to ensure that the disclosure of the present invention is complete and to fully convey the scope of the invention to those skilled in the art. This is provided to inform you. In the drawings, like symbols refer to like elements.

The emergency door with a double open structure according to a preferred embodiment of the present invention can be provided at an entrance that requires security, such as a home or a commercial building, or at an entrance to a place where relative security is not required, such as a warehouse, school, or parking lot. It can be used as a fire door and has a structure that allows entry and exit in both directions, allowing people to escape quickly in the event of flooding, thereby minimizing casualties.

Hereinafter, the present invention will be described in detail with reference to various embodiments.

As shown in Figures 1 and 2, the emergency door of the double open structure according to the first embodiment of the present invention includes an outer door portion 100 and an inner door portion 200.

First, the outer door 100 is installed to be rotatable in only one direction based on the door frame 10 installed at the entrance to a home, shopping mall, warehouse, school, underground parking lot, etc. to open or close the entrance, and is installed on the inside. An incision 110 is provided. Here, 'rotation in one direction only' means rotation only from indoor to outdoor direction, as will be described later. The outer door portion 100 is rotatably installed on the door frame 10 through a hinge or the like.

To elaborate, according to fire law standards, fire doors have a structure that opens the entrance by rotating only from the indoor to the outdoor direction, and have a structure that cannot rotate from the outdoor direction to the indoor direction in the opposite direction for airtightness in the event of a fire.

In addition, as shown in FIGS. 1 and 2, a protruding protrusion 11 is provided on the inner surface of the door frame 10, and as described above, the fire door rotates from the outdoor direction toward the indoor direction to open the entrance. It has a structure that cannot be done. In this structure, when flooding occurs on the outdoor side and the water rises to about 50 cm, people on the indoor side push the fire door, that is, the outer door portion 100, toward the outdoor side due to water pressure to open the entrance. It becomes difficult, and as a result, fatal accidents frequently occur, and the present invention is intended to solve this problem.

Next, as shown in FIGS. 1 and 2, the inner door 200 is rotatable only in the other direction opposite to the one direction with respect to the outer door 100 to open or close the incision 110. It is installed. Here, the term 'rotation only in the other direction' means rotation only from the outdoor to the indoor direction, that is, the user on the indoor side opens the incision 110 by pulling the inner door 200. .

Hereinafter, for convenience of explanation, the indoor side will be referred to as a first area and the outdoor side will be referred to as a second area.

Additionally, in the case of homes, stores, warehouses, and schools, the first area refers to the space inside the building, and the second area refers to the space outside the building. Additionally, in the case of an underground parking lot, the first area may refer to a place where a parking space is provided, and the second area may refer to a space provided with stairs to move to the ground.

That is, in the present invention, when a flooding situation occurs as described above, a person on the indoor side (first area) pulls the inner door 200 toward the indoor side (first area) to create an incision in the outer door 100. Provides a structure that can open (110). Accordingly, even if flooding occurs at a water level of about 50 cm as described above on the outdoor side (second area), people on the indoor side (first area) open the inner door 200 and open the incision 110. You can escape to the outdoor side (second area) through. In addition, in the case of the inner door 200, as opposed to the outer door 100, it has a structure that is opened by pulling in the direction from the outdoor side to the indoor side, so even the elderly and infirm can easily open it regardless of the water pressure.

As shown in Figures 1 and 2, in the embodiment of the present invention, the incision 110 is preferably formed at a position spaced a certain distance upward from the lower end of the outer door 100, and specifically, the incision 110 The distance (d) between the lowermost part of the sphere 110 and the lower part of the outer door 100 may be 5 to 30 cm.

If the distance is less than 5 cm, the effect of minimizing the inflow of water from the outdoor side into the indoor side when the incision is opened is reduced, and if the distance is more than 30 cm, it is inconvenient for people to move beyond the height of the distance. there is.

In this way, the lowermost side of the cutout 110, that is, the lowest end of the inner door 200, is provided at a position spaced upward from the lower end of the outer door 100, so that it is raised to a height of a certain level or more on the outdoor side (second area). Even if a flooding situation occurs and the user pulls the inner door 200 to open the incision 110, the inflow of water from the second area into the first area (inside the room) can be further minimized. To elaborate, if the distance (d) above is 10cm and the water in the second area is filled to a height of 15cm from the floor surface (corresponding to the lower part of the outer door), only the water corresponding to the difference of about 5cm flows into the interior. As described above, it is possible to minimize the inflow of water into the interior to minimize additional damage.

In addition, water in the second area due to flooding minimizes the water pressure acting on the inner door 200, thereby minimizing distortion of the inner door 200, allowing the user to easily open the inner door 200. You can.

For example, if the distance d is 10 cm and the water in the second area is filled to a height of 5 cm from the floor surface (corresponding to the lower part of the outer door part), water pressure does not act on the inner door part 200. Twisting of the inner door portion 200 does not occur. In addition, when the distance d is 10 cm and the water in the second area is filled to a height of 20 cm from the floor surface (corresponding to the lower part of the outer door part), a small water pressure is applied only to the lower part of the inner door part 200. As a result, a serious situation in which the inner door portion 200 is distorted does not occur.

Meanwhile, in the process where the user pulls the inner door 200 in the first area to open the incision 110 and attempts to escape to the second area through the incision 110, the water level in the second area changes to a distance between the two areas. If it is higher than (d), a situation may occur in which the inner door 200 is rapidly opened due to water pressure partially acting on the inner door 200. In this case, a user located near the inner door 200 may be struck due to the rapid rotation of the inner door 200 and may suffer a safety accident.

In order to solve this problem, the present invention, as shown in Figure 1, when the inner door 200 is opened, the outer door 100 and the inner door 200 are provided to prevent the inner door 200 from opening rapidly. A damper 140 may be further installed to connect the two.

Here, the damper 140 may have a hydraulic cylinder structure, and thus can reduce the opening speed by cushioning the rapid opening of the inner door 200 toward the interior (first direction) due to hydraulic action.

As shown in Figures 1 and 2, the inner door portion 200 includes an inner door 210 and a door handle 220.

The inner door 210 has a cross-sectional shape corresponding to the incision 110 to open or close the incision 110 and is rotatably connected to the outer door 100 through a hinge or the like.

As shown in Figures 1 and 2, the door handle 220 is provided on one side of the inner door 210, and is inserted into or removed from the locking groove 120 formed on the inner wall forming the incision 110. It has a protrusion 221 and a lever 222 that operates to insert or remove the locking protrusion 221 into or out of the locking groove 120. The lever 222 is installed to be rotatable with respect to the door handle body, and the locking protrusion 221 reciprocates in a straight line according to the rotation of the lever.

Meanwhile, on the inner wall forming the incision 100, there is a protruding protrusion 11 that contacts the inner door 210 to limit the rotation direction so that the inner door 210 can rotate in only one direction and prevents it from rotating in the other direction. This is prepared.

That is, the user holds the lever 222 by hand and then pulls the lever 222 toward the indoor side (first direction) to move the locking protrusion 221 to separate from the locking groove 120, thereby opening the inner door 210. The incision 110 can be opened by rotating. Conversely, the user holds the lever 222 by hand and then pushes the lever 222 toward the outdoor side (second direction) so that the locking protrusion 221 is inserted into the locking groove 120 and the inner door 210 is opened through an incision. (110) can be kept closed.

Meanwhile, the inner door 200 is not freely opened and used as a movement passage in normal times, but is provided to be used only in emergencies such as flood situations. In normal times, the user pulls the lever 222 by hand to open the door. Even so, it is necessary to prevent a situation in which the inner door 210 rotates and the incision 110 is opened.

To this end, the inner door portion 200 may further include a locking portion (not shown) that can be inserted into or removed from the door handle 220 and allows or restrains the operation (pulling or pushing operation) of the lever 222. there is.

Specifically, the locking portion (not shown) may include a locking pin (not shown) that is inserted into or removed from the pin insertion hole (not shown) of the door handle 220 and restrains or allows the operation of the lever 222. . Therefore, in normal times, the manager can maintain the locking pin (not shown) inserted into the pin insertion hole (not shown), and when an emergency situation such as a flooding situation occurs, the locking pin (not shown) is inserted into the pin insertion hole (not shown). By removing it from (not shown), anyone can easily open the inner door 210 by operating the lever 222. Of course, not only the administrator can remove the locking pin (not shown), but anyone can easily remove it by pulling it out from the pin insertion hole (not shown).

Hereinafter, the emergency door of the double open structure according to the second embodiment of the present invention will be described, and the same reference numerals will be used for the same components as those of the first embodiment, and duplicate description will be omitted.

In the above description, the description was based on a case where people located in the first area open the inner door 200 and escape to the second area due to a flooding situation in the second area. However, on the contrary, the second area rapidly rises to the level of water. A situation may arise where the level rises and people located in the second area (for example, the stairs of an underground parking lot that goes up to the ground level) cannot move to the ground level through the stairs.

In the present invention, when the above-mentioned situation occurs, people located in the second area rotate the inner door 200 toward the indoor side (parking space in an underground parking lot, etc.) to open the incision 110 and pass through the incision. An emergency rescue is provided to enable evacuation to the indoor side.

Specifically, as shown in Figures 3 and 4, the emergency door of the double open structure according to the second embodiment of the present invention forcibly pushes the inner door portion 200 in the second area opposite to the first area. It further includes a forced opening portion 300 that allows the incision 110 to be opened.

In the second embodiment of the present invention, the forced opening portion 300 includes a forced opening rod 310, a knob 320, and an elastic member 330.

3 and 4, the forced opening rod 310 is inserted into the first rod insertion hole 211 formed in the inner door 210 and the second rod insertion hole (211) provided in the door handle 220. (not shown) is prepared to a certain length or more to be inserted into the device.

The knob 320 is a part held by the user's hand and is integrally connected to the end of the forced opening rod 310 located in the second area. The knob 320 is disposed in the second area and has an expanded cross-sectional area compared to the forced opening rod 310. It is made to have.

The elastic member 330 has one end supported on one side of the outer door 100 facing the second area and the other end supported on the knob 320 to elastically open the forced opening rod 310 and the knob 320. I support it. The elastic member 330 can be used as a coil spring, for example.

Here, as shown in FIG. 3, when a person located in the second area holds the knob 320 with his hand and pushes the knob 320 and the forced opening rod 310 toward the door handle 220, As the end of the forced opening rod 310 is further inserted (moved) inside the door handle 220, the lever 222 is pressed to release the locking protrusion 221 from being previously inserted into the locking groove 120.

That is, with the locking protrusion 221 inserted inside the locking groove 120, a person located in the second area uses the inner door 210 rather than the knob 320 and the forced opening rod 310 to open the first area. Even if you push toward it, the inner door 210 cannot be rotated and opened.

However, when the locking protrusion 221 is inserted inside the locking groove 120 and a person located in the second area holds the knob 320 with his hand and presses the knob 320 toward the first area, , the end of the forced opening rod 310 presses the lever 222 to unlock the locking protrusion 221, and the inner door 210 also moves toward the first area by the force pressing the knob 320. The incision hole 110 may be opened while rotating.

On the other hand, the forced opening part 300 cannot be operated freely in normal times and is designed to be used only in emergencies such as flood situations. In normal times, especially curious infants and children press the knob 320 out of curiosity to open the inner door 210. It is necessary to prevent spinning situations from occurring freely.

To this end, as shown in FIG. 4, the forced opening portion 300 is provided in a form that surrounds the elastic member 330 between one side of the inner door 210 facing the second area and the knob 320. , the end of the forced opening rod 310 may further include a forced opening limiting member 340 capable of restricting access to the door handle 220 side.

Specifically, the forced opening limiting member 340 has one end in the width direction supported on one side of the inner door 210 facing the second area, the other end in the width direction supported by the knob 320, and both ends in the longitudinal direction. A gap below a certain level is formed between them to have an overall C-shaped cross-sectional structure.

The forced opening limiting member 340 can restrict the movement of the knob 320 when installed to surround the elastic member 330, and in an emergency, the user can connect the forced opening limiting member 340 to the knob 320 and the forced opening rod. It can be removed by pulling it in the lateral direction of 310, and then the inner door 210 can be opened by pushing the knob 320.

Accordingly, when the forced opening limiting member 340 is removed by moving laterally as described above, the lateral separation is possible at least in the initial state in which the gap between both ends in the longitudinal direction is smaller than the diameter of the elastic member 330. It is preferably made of a material that can be deformed larger than the diameter of the elastic member 330. For example, the forced opening limiting member 340 may be made of a thin plastic material.

Hereinafter, an emergency door of a double open structure according to the third embodiment of the present invention will be described. The same reference numerals are used for the same components as those of the first and second embodiments, and duplicate descriptions are omitted.

The emergency door of the double open structure according to the third embodiment of the present invention is a change in the inner door structure of the first embodiment. As described above, the inner door 200 is not normally open and functions as an entrance, but is opened only in case of emergency such as a flood situation, and maintains the incision 110 closed for a long period of time, such as approximately several months to several years. In this case, a situation may occur in which foreign substances caught in the contact area between the outer door 100 and the inner door 200 are solidified and cannot be easily rotated. In this case, even though a flooding situation occurs and an urgent evacuation is required, a problem may occur in which the user cannot easily rotate the inner door 200 by simply pulling the lever (see the first embodiment) and cannot quickly evacuate. there is.

The emergency door of the double open structure according to the third embodiment of the present invention has the inner door structure changed to prevent such problems from occurring. As shown in FIGS. 5 to 7, the inner door portion 200 is the inner door portion. Includes (210) and door handle (420).

The inner door 210 has a cross-sectional shape corresponding to the incision 110 to open or close the incision 110 and is rotatably connected to the outer door 100 through a hinge or the like.

As shown in FIGS. 5 to 7, the door handle 420 is rotatably provided on the inner door 210, and includes a rotating shaft 421, a locking protrusion 422, a lever 423, and a plurality of protruding pieces. Includes (424).

The rotation shaft 421 is provided to be rotatable through a separate bracket, etc. on one side of the inner door 210 located near the locking groove 120.

The locking protrusion 422 protrudes on one side of the rotating shaft 421 and is inserted into or removed from the locking groove 120 formed on the inner wall of the incision hole 110 as the rotating shaft 421 rotates.

The lever 423 protrudes at a certain distance on the other side of the rotation shaft 421 in the opposite direction of the direction in which the locking protrusion 422 protrudes, and is provided so that the user can hold it with his hand and rotate the rotation shaft 421.

That is, the user holds the lever 423 by hand and then pulls the end of the lever 423 toward the indoor side (first direction) to rotate the rotation axis 421 so that the locking protrusion 422 is separated from the locking groove 120. By moving it as much as possible, the inner door 210 can be rotated to open the incision hole 110. Conversely, the user holds the end of the lever 423 with his hand and then rotates the rotation axis 421 while pushing the end of the lever 423 toward the outdoor side (second direction) so that the locking protrusion 422 is inside the locking groove 120. By being inserted into the inner door 210, the incision hole 110 can be maintained in a closed state.

As shown in FIGS. 5 to 7, the plurality of protruding pieces 424 protrude from the outer surface of the rotating shaft 421 and are inclined in a direction relative to the direction in which the locking protrusion 422 protrudes from the outer surface of the rotating shaft 421. It protrudes.

To elaborate, as shown in FIG. 5, in a state where the locking protrusion 422 is completely inserted into the locking groove 120 and the inner door 210 closes the incision 110, a plurality of protruding pieces 424 ) and the inner wall forming the incision 110, the plurality of protruding pieces 424 protrude in an inclined direction so that a gap of a certain amount or more is formed.

Here, the plurality of protruding pieces 424 are formed to be spaced apart from each other in both directions of the locking protrusion 422 based on the longitudinal direction of the rotation axis 421.

In a state where the locking protrusion 422 is completely inserted into the locking groove 120 and the inner door 210 closes the incision 110, the user uses the lever 423 to open the incision 110 for emergency evacuation. ) by holding the end of it with your hand and pulling it toward the user to rotate the rotation axis 421, the locking protrusion 422 moves away from the locking groove 120 according to the rotation of the rotation shaft 421 and the locking state of the locking projection is released. do.

In addition, as the rotation shaft 421 rotates, the plurality of protruding pieces 424 press the inner wall forming the incision hole 110 with a certain force or more.

That is, as shown in FIG. 5, when the user rotates the lever 423 so that the locking protrusion 422 is separated from the locking groove 120, the plurality of protruding pieces 424 are formed on the inner wall of the incision hole 110. The inner wall of the incision 110 is pressed so that it is spaced apart from the inner door 210 by a certain amount or, conversely, the inner door 210 is spaced from the inner wall of the incision 110 by a certain amount. To elaborate, the plurality of protruding pieces 424 function as a kind of lever, and as described above, in a state where foreign matter is fixed by maintaining the closed state for a long time, the inner door 210 and the incision are forced through the lever method. The inner door 210 can be easily opened by opening the distance between the inner walls of 110 to slightly increase.

To elaborate, as described above, when the plurality of protruding pieces 424 press the inner wall of the incision 110 and spread them so that the distance between the inner door 210 and the inner wall of the incision 110 increases slightly, the inner wall Foreign matter stuck between the surface of the door 210 and the inner wall of the incision 110 can be easily separated from it, and thus the inner door 210 can be opened more easily.

As in the above-described second embodiment, the emergency door of the double open structure according to the third embodiment of the present invention allows people located in the second area to open the inner door 200 to the indoor side (parking space in an underground parking lot, etc.). It provides an emergency structure that opens the incision 110 by rotating it and allows evacuation to the indoor side through the incision (see second embodiment).

Specifically, as shown in FIG. 7, the emergency door of the double open structure according to the third embodiment of the present invention forcibly pushes the inner door portion 200 in the second area opposite to the first area to create an incision. It further includes a forced opening portion 300 that allows opening (110).

In the third embodiment of the present invention, as shown in FIG. 7, the forced opening portion 300 includes a forced opening rod 310, a knob 320, and an elastic member 330.

Here, the forced opening rod 310 is inserted into the first rod insertion hole 211 formed in the inner door 210 and moves the lever 423 of the door handle 420 in the direction from the second area to the first area. It is provided with a length of a certain length or more to enable pressurization.

The knob 320 is a part held by the user's hand and is integrally connected to the end of the forced opening rod 310 located in the second area. The knob 320 is disposed in the second area and has an expanded cross-sectional area compared to the forced opening rod 310. It is made to have.

The elastic member 330 has one end supported on one side of the outer door 100 facing the second area and the other end supported on the knob 320 to elastically open the forced opening rod 310 and the knob 320. I support it. The elastic member 330 can be used as a coil spring, for example.

Here, as shown in FIG. 7, when a person located in the second area holds the knob 320 with his hand and pushes the knob 320 and the forced opening rod 310 toward the door handle 420, The end of the forced opening rod 310 presses the lever 423 of the door handle 420 to rotate the rotation shaft 421, releasing the locking protrusion 422 from being previously inserted into the locking groove 120.

That is, with the locking protrusion 422 inserted inside the locking groove 120, a person located in the second area uses the inner door 210 rather than the knob 320 and the forced opening rod 310 to open the first area. Even if you push toward it, the inner door 210 cannot be rotated and opened.

However, when the locking protrusion 422 is inserted inside the locking groove 120 and a person located in the second area holds the knob 320 with his hand and presses the knob 320 toward the first area, , the end of the forced opening rod 310 presses the lever 423, so that the rotation shaft 421 rotates in one direction, and the locking state of the locking protrusion 422 is released, and the inner side is moved by the force pressing the knob 320. The door 210 may also rotate toward the first area to open the incision hole 110.

In addition, the emergency door of the double open structure according to the third embodiment of the present invention has a forced opening limiting member 340 like the second embodiment (see FIG. 4), which is the same as the second embodiment, so the duplicate description is Omit it.

Hereinafter, an emergency door of a double open structure according to the fourth embodiment of the present invention will be described, and the same reference numerals will be used for the same components as those of the first embodiment, and duplicate description will be omitted.

The emergency door with a double open structure according to the fourth embodiment of the present invention has a changed inner door structure of the first embodiment.

In the fourth embodiment of the present invention, as shown in FIG. 8, the inner door portion 500 includes an inner door 510 and a door handle 220. The structure of the door handle 220 is the same as that of the first embodiment.

The inner door 510 has a cross-sectional shape corresponding to the incision 110 to open or close the incision 110 and is rotatably connected to the outer door 100 through a hinge or the like.

The door handle 220 is provided on one side of the inner door 510, has a locking protrusion 221 that is inserted into or removed from the locking groove 120 formed on the inner wall of the incision 110, and locks the locking protrusion 221. It has a lever 222 that operates to insert or remove the inside of the groove 120 (see the first embodiment for the part related to the door handle).

That is, the user holds the lever 222 with his hand and then pulls the lever 222 toward the indoor side (first direction) to move the locking protrusion 221 to separate from the locking groove 120, thereby opening the inner door 510. The incision 110 can be opened by rotating. Conversely, the user holds the lever 222 by hand and then pushes the lever 222 toward the outdoor side (second direction) so that the locking protrusion 221 is inserted into the locking groove 120 and the inner door 510 is opened through the incision. (110) can be kept closed.

Here, as shown in FIG. 8, the inner door 510 is rotatably connected to the first folding door 511 on which the door handle 220 is provided and the outer door portion 100, and the first inner door It includes a second folding door 512 rotatably connected to 510. Hinges, etc. may be provided at the folded portions of the first folding door 511 and the second folding door 512.

That is, the inner door 510 has a foldable structure, and the first foldable door 511 and the second foldable door 512 are folded together and rotate with respect to the outer door portion 100 to open the incision 110. It can be opened. Here, guide rails (not shown) may be provided on the upper and lower inner walls forming the incision 110, and the upper and lower sides of the first folding door 511 can slide along the guide rails (not shown). A slide roller (not shown) may be provided.

Although the present invention has been shown and described in connection with preferred embodiments for illustrating the principles of the invention, the invention is not limited to the construction and operation as shown and described. Rather, those skilled in the art will understand that numerous changes and modifications can be made to the present invention without departing from the spirit and scope of the appended claims.

10: door frame 11: protruding jaw
100: outer portal 110: incision
120: Locking groove 140: Damper
200: inner door 210: inner door
220: Door handle 221: Locking protrusion
222: Lever 300: Force opening portion
310: Forced opening rod 320: Knob
330: elastic member 340: forced opening limiting member
420: Door handle 421: Rotation axis
422: locking protrusion 423: lever
424: protruding piece 500: inner door portion
510: inner door 511: first folding door
512: second folding door

Claims (7)

An outer door portion that is installed to be rotatable in only one direction relative to the door frame, opens or closes the doorway, and has a cutout on the inside; and
An inner door portion installed to be rotatable only in the other direction opposite to the one direction with respect to the outer door portion to open or close the incision,
The incision is formed at a position spaced a certain distance upward from the lower end of the outer door,
The inner door is,
an inner door having a cross-sectional shape corresponding to the incision and rotatably connected to the outer door; and
A rotating shaft rotatably provided on the inner door and rotatably coupled to the inner door, a locking protrusion that protrudes on one side of the rotating shaft and is inserted into or removed from the locking groove formed on the inner wall of the incision as the rotating shaft rotates. , a lever protruding on the other side of the rotating shaft to rotate the rotating shaft, and a plurality of protruding pieces protruding on the outer surface of the rotating shaft and protruding in an inclined direction with respect to the direction in which the locking protrusion protrudes from the outer surface of the rotating shaft. An emergency door with a double open structure, characterized by including a door handle. According to paragraph 1,
When the lever is rotated so that the locking protrusion is separated from the locking groove, the plurality of protruding pieces press the inner wall of the incision in a lever manner so that the inner wall of the incision is spaced apart from the inner door by a certain amount,
An emergency door with a double open structure, wherein the plurality of protruding pieces are formed to be spaced apart from each other in both directions of the locking protrusion based on the longitudinal direction of the rotation axis. According to paragraph 1,
The inner door rotates to open the incision through a pulling operation in a first area on one side with respect to the outer door,
An emergency door with a double open structure, characterized in that a forced opening part is further provided in a second area opposite to the first area to forcibly push the inner door to open the incision. According to paragraph 3,
The forced opening part is
a forced opening rod that is inserted into the first rod insertion hole formed in the inner door and is provided to press the lever in a direction from the second area toward the first area;
a knob integrally connected to an end of the forcibly opening rod, disposed in the second region, and having an enlarged cross-sectional area compared to the forcibly opening rod; and
an elastic member whose one end is supported on one side of the outer door facing the second area and whose other end is supported on the knob to elastically support the forced opening rod and the knob;
When the knob is pushed toward the door handle, the end of the forced opening rod presses the lever to rotate the rotation shaft and release the locking protrusion from being previously inserted into the locking groove. emergency door. According to clause 4,
The forced opening part is
It is provided in a form surrounding the elastic member between one side of the inner door facing the second area and the knob, and further includes a forced opening limiting member capable of restricting access of the end of the forced opening rod to the door handle side. An emergency door with a double open structure, characterized by: According to clause 5,
The forced opening limiting member is,
One end in the width direction is supported on one side of the inner door facing the second area, the other end in the width direction is supported on the knob, and a gap is formed between both ends in the longitudinal direction to have an overall C-shaped cross-sectional structure. An emergency door with a double open structure. According to paragraph 1,
The inner door is,
an inner door having a cross-sectional shape corresponding to the incision and rotatably connected to the outer door; and
It includes a door handle provided on the inner door so that at least a portion is inserted into or removed from the locking groove formed on the inner wall of the incision through a user's action to open or close the incision,
The inner door is,
a first folding door provided with the door handle; and
An emergency door with a double open structure, comprising a second folding door rotatably connected to the outer door part and rotatably connected to the first folding door.

Images