KR102671017B1 - Going up and down assembly for emergency escape ladder and emergency escape ladder apparatus using thereof - Google Patents

Abstract

According to the present invention, when the ladder is unfolded from the border box toward the bottom of the escape space, the ladder is expanded at a slower speed than when the ladder is expanded by weight, including: a base panel formed on the inner side of the border box; A winding drum configured to be rotatable on the base panel and the other end of a wire fixed to the lowest end of the ladder is fixedly coupled to allow the wire to be wound and wound according to the direction of rotation; A run bell bar that is fixedly coupled to the winding drum with clearance and is spaced apart at a predetermined distance in the longitudinal direction when the winding drum rotates; And it covers the winding drum and the run bell bar and is formed on a base panel or border box, and when the winding drum is rotated by a wire connected to the ladder as the ladder is unfolded, the end of the run bell bar rotating along the winding drum is formed in an interference section formed on the inner peripheral surface. There is provided a steel assembly including a runbell drum that interferes with the driven drum to unfold at a slow speed and at the same time generates a hitting sound.

Description

Going up and down assembly for emergency escape ladder and emergency escape ladder apparatus using the same}

The present invention relates to a steel assembly for an emergency escape ladder and an emergency escape ladder device using the same. More specifically, it is installed in the evacuation hole of the fire escape space of a building so that in the event of an emergency escape situation such as a fire, evacuees can quickly go downstairs using the ladder. It relates to a steel assembly for an emergency escape ladder that allows safe evacuation and an emergency escape ladder device using the same.

Recently, the Act on Installation and Maintenance of Firefighting Facilities and Safety Management (Enforcement Decree Article 15), the Fire Safety Standard for Escape Equipment NFSC 301 (Article 3 (8), Article 4 (3) 10), and the Building Act Enforcement Decree (Article 46 (4) In accordance with paragraph), emergency escape ladder devices are required to be installed in medical facilities, educational facilities, lodging facilities, apartment complexes, and high-rise buildings.

Conventional ladder steel assemblies and emergency escape ladder devices, as disclosed in Registered Patent No. 10-2467543, etc., are constructed in a folded state inside a frame box installed in an escape hole formed at the bottom of the escape space of a building. A ladder that unfolds toward the bottom of the evacuation space when the box is opened, and a ladder steel assembly that is constructed inside the frame box and allows the ladder to unfold at a constant speed when the ladder is unfolded from the frame box toward the bottom of the evacuation space. The ladder steel assembly includes a cylindrical housing fixed to the inner surface of the frame box, a wire drum that is rotatable on a rotating shaft penetrating the inside of the housing and on which the wire is wound and unwound when the rotating shaft rotates; One end is fixed to the wire drum, the other end is fixed to the lowest end of the ladder, and it consists of a wire wound around the wire drum and rotatable on a rotating shaft. As the ladder unfolds, the wire drum connected to the ladder rotates, causing the rotating shaft to rotate. It includes a centrifugal brake that allows the rotation axis to rotate at a constant speed, and in the event of an emergency evacuation situation such as a fire in the building, the ladder is extended toward the bottom of the border box to enable evacuees to escape quickly and continuously. .

Here, the conventional ladder steel assembly and the emergency escape ladder device allow the wire drum, which rotates during the unfolding operation of the ladder, to rotate at a constant speed by a centrifugal brake. In the case of the centrifugal brake, a plurality of devices are used to apply centrifugal force to the brake wheel. When the reduction piece is radially arranged and the brake wheel rotates along the rotation axis connected to the wire drum, the reduction piece is moved to the edge of the brake wheel by centrifugal force, thereby reducing the rotational force.

Therefore, according to the conventional ladder steel assembly and emergency escape ladder device, when the ladder is first unfolded from the frame box, the reduction piece is not moved to the edge of the brake wheel, so the wire drum rotates due to the weight of the ladder and the ladder is unfolded. As the rotation speed gradually increases, if the reduction piece moves and contacts the edge of the brake wheel due to centrifugal force, the wire drum does not rotate and the ladder stops in a partially unfolded state.

Accordingly, in order to unfold the ladder again, the evacuee must directly lift the ladder to a predetermined height, release the load on the brake wheel and reduction piece, and then put the ladder down again so that the wire drum rotates. In a quick evacuation situation, There is a problem in that the ladder cannot be unfolded all at once, greatly reducing usability.

Therefore, the purpose of the present invention is to provide a means for unfolding a ladder from a border box at a slow speed, in which a run bell bar is formed on a rotating winding drum and induces interference when the run bell bar rotates on the inner periphery of the run bell drum covering the winding drum and the run bell bar. The object of the present invention is to provide a steel assembly for an emergency escape ladder that can improve usability by having an interference portion bent so that the ladder can be unfolded all the way at once at a slower speed than when unfolded by weight, and an emergency escape ladder device using the same.

Meanwhile, the purpose of the present invention is not limited to the purposes mentioned above, and other purposes not mentioned will be clearly understood by those skilled in the art from the description below.

According to the present invention, when the ladder is unfolded from the border box toward the bottom of the escape space, the ladder is expanded at a slower speed than when the ladder is expanded by weight, including: a base panel formed on the inner side of the border box; A winding drum configured to be rotatable on the base panel and the other end of a wire fixed to the lowest end of the ladder is fixedly coupled to allow the wire to be wound and wound according to the direction of rotation; A run bell bar that is fixedly coupled to the winding drum with clearance and is spaced apart at a predetermined distance in the longitudinal direction when the winding drum rotates; And it covers the winding drum and the run bell bar and is formed on a base panel or border box, and when the winding drum is rotated by a wire connected to the ladder as the ladder is unfolded, the end of the run bell bar rotating along the winding drum is formed in an interference section formed on the inner peripheral surface. There is provided a steel assembly including a runbell drum that interferes with the driven drum to unfold at a slow speed and at the same time generates a hitting sound.

Here, the run bell bar is a run bell body in the shape of a bar; A clearance hole is formed in the center of the runbell body to allow the rotation axis of the winding drum to penetrate; And an interference spacing hole that is perforated on both sides of the clearance hole and is movably coupled to the coupling port of the winding drum so that when one end of the runbell body contacts the interference part of the runbell drum, the runbell body moves to the other end. It is desirable to include it.

In addition, the run bell bar is formed in the shape of a tilde at the part of both ends of the run bell body that contacts the interference part during forward rotation of the winding drum, so that when it contacts the interference part of the run bell drum, the interference increases and the forward rotation of the winding drum temporarily stops. A hitting stage that generates a hitting sound of a predetermined size while making it possible to do so; Among both ends of the runbell body, it is desirable to include a non-interfering end that is formed in a round shape at the part that faces the hitting end and contacts the interference part during reverse rotation of the winding drum to minimize interference when contacting the interference part of the runbell drum. do.

In addition, the runbell drum includes a runbell drum body having a shape in which a flange protrudes at a predetermined height at the edge of the disk; It has a predetermined angle to the flange of the runbell drum body and is bent in the shape of a hatchet toward the center of the runbell drum. When the runbell bar rotates forward, the ends of the runbell bar contact and interfere with each other, causing the rotation of the winding drum to temporarily stop. It is desirable to include an interference portion.

Additionally, it is preferable that an odd number of interference units are formed.

Meanwhile, according to the present invention, a border box installed in an escape hole formed at the bottom of the escape space of a building; A ladder that is folded inside the border box and unfolds toward the bottom of the evacuation space; A rigid assembly configured inside the border box and allowing the ladder to unfold at a slower speed than when the ladder is unfolded by weight when the ladder is unfolded from the border box toward the bottom of the refuge space; And an emergency escape ladder device is provided, including a ladder stopper configured inside the border box and allowing the ladder to be restrained while maintaining a folded state inside the border box and at the same time allowing the ladder to unfold from the border box.

Here, the ladder stopper includes a stopper gear coupled to the driven drum of the steel assembly; A stopper configured on the base panel and engaged with the stopper gear to suppress rotation of the stopper gear or winding drum; An operating lever that is connected to the stopper and rotates the stopper so that when the stopper and the stopper gear are engaged, the ladder is stored in a folded state inside the frame box and when the stopper and the stopper gear are disengaged, the ladder is unfolded; And when the operation lever is rotated, the operation lever and the stopper are maintained in a rotated state, and when the rotation operation is released, the stopper is returned to its original position and the stopper and the stopper gear are engaged, so that a person is placed at the bottom of the ladder during the unfolding operation of the ladder. In this case, it is desirable to include a stopper return body that stops the unfolding motion of the ladder.

Therefore, according to the present invention, a run bell bar is formed on a rotating winding drum as a means for unfolding the ladder from the border box at a slow speed, and the inner periphery of the run bell drum covering the winding drum and the run bell bar induces interference when the run bell bar rotates. The interference part is bent to improve usability by allowing the ladder to unfold all the way at a slower speed than when it is unfolded by weight.

Meanwhile, the effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the description of the claims.

1 and 2 are front views showing the ladder being folded and unfolded, respectively, in the emergency escape ladder device according to a preferred embodiment of the present invention;
Figures 3 and 4 are side views showing Figures 1 and 2, respectively;
Figure 5 is a plan view showing Figure 1;
Figures 6 to 10 are diagrams showing the configuration of the steel assembly, ladder stopper, and bracket in the emergency escape ladder device of Figure 1.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings.

As shown in Figures 1 to 10, the emergency escape ladder device according to a preferred embodiment of the present invention is installed inside a border box (not shown) installed in an escape hole formed at the bottom of an escape space, such as a ceiling slab of a building. When the ladder 200 is configured in a folded state and unfolds toward the bottom of the refuge space, and is configured inside a border box (not shown) and the ladder 200 is unfolded from the border box (not shown) toward the bottom of the shelter space. The ladder 200 is configured inside a rigid assembly 100 and a border box (not shown) to unfold at a slower speed than when unfolded by weight, and the ladder 200 is maintained in a folded state inside the border box (not shown). It includes a ladder stopper 300 that allows the ladder 200 to unfold from a border box (not shown) while being restrained while doing so.

Here, the escape space floor refers to the floor where an emergency escape situation such as a fire occurs, and the escape space floor refers to the lower floor of the escape space floor.

The border box (not shown) is coupled to the escape hole at the bottom of the escape space and may have a box shape with the upper and lower parts penetrating.

Here, the border box (not shown) is preferably made of a metal material with sufficient durability and heat resistance since the ladder 200, the steel assembly 100, and the ladder stopper unit 200 are built into it.

The ladder 200 is an evacuation means configured in a folded state inside a border box (not shown) and unfolded toward the bottom of the escape space by the ladder stopper 300, and has an antenna type inside the border box (not shown). It has a configuration that unfolds or folds, more preferably, a plurality of unit ladders consisting of a pair of slide tubes with guide holes for moving the rungs on the inner side facing each other, and a rung connecting the pair of slide tubes. It is composed of a combination of, and each unit ladder has a structure in which each unit ladder can be folded or unfolded as it is stored and withdrawn through a slide tube with a relatively small inner diameter compared to the one placed directly above the ladder placed downward. However, a stop pin is mounted on the upper end of the slide tube of the unit ladder, and a slot-shaped pin hole formed long along the length of the tube is provided on the outer side of the slide tube to insert one end of the stop pin. It may have a configuration that prevents separation between unit ladders.

Meanwhile, the ladder 200 has a 'U' shape and includes a plurality of ladder frames that allow evacuees located at the bottom of the escape space to climb down to the bottom of the escape space while stepping on it with their feet or holding it with their hands, and a plurality of ladder frames. It may have a configuration including a plurality of connection frames that enable the operation of unfolding or folding a plurality of ladder frames by linking them, and a connecting rod connecting a pair of connection frames located at the lowest end of the plurality of connection frames. there is.

Accordingly, according to the ladder 200, when an emergency escape situation occurs, when an emergency escape situation occurs, the ladder 200 is spread downward by weight from the border box (not shown), so that a evacuee located at the bottom of the escape space can move to the bottom of the escape space. You can evacuate by going down the ladder (200).

On the other hand, the steel assembly 100 according to the present invention is configured inside a border box (not shown), and when the ladder 200 is unfolded from the border box (not shown) toward the bottom of the escape space, the weight of the ladder 200 is increased. As a means for unfolding at a slower speed than when unfolding by, a base panel 110 formed on the inner side of a border box (not shown), rotatably formed on the base panel 110 and placed at the lowest end of the ladder 200. The other end of the wire (not shown), one end of which is fixed, is fixedly coupled to the winding drum 120, which allows the wire (not shown) to be wound and wound according to the direction of rotation. It has a bar shape and has a gap in the winding drum 120. It is fixedly coupled to the base panel 110 or a border box (not shown) while covering the run bell bar 130 and the winding drum 120 and the run bell bar 130, which are spaced apart at a predetermined distance in the longitudinal direction when the winding drum 120 rotates. ) and when the driven drum 120 is rotated by a wire (not shown) connected to the ladder 200 as the ladder 200 unfolds from the border box (not shown) by its own weight, the driven drum 120 The end of the run bell bar 130, which rotates along, interferes with an odd number of interference parts 142 bent at a predetermined angle on the inner peripheral surface, so that the winding drum 120 rotates at a reduced speed so that the ladder 200 is unfolded by its weight. At the same time, the run bell bar 130 generates a predetermined striking sound when the interference part 142 is struck, so that the ladder 200 is unfolded at a slower speed than before, so that evacuees located at the bottom of the refuge space can be notified that the ladder 200 is unfolding. It includes a runbel drum 140 that provides a warning function to guide the ladder 200 and prevent it from colliding.

Here, the steel assembly 100 is installed on the inner surface of the border box (not shown) through a bracket 400, which will be described later. At this time, the base panel 110 or the runbell drum 140 is attached to the bracket 400. It can be fixed.

The run bell bar 130 has the shape of a bar and is fixedly coupled to the winding drum 120 with a gap, and is spaced apart at a predetermined distance in the longitudinal direction when the winding drum 120 rotates to form the interference portion 142 of the run bell drum 140. ), a runbell body 131 in the shape of a bar having a length shorter than the inner periphery of the runbell drum 140, which is a means for decelerating the rotation of the winding drum 120 and generating a striking sound at the same time, when in contact with the runbell drum 120. A clearance through-hole 132 is formed in an oval shape at the center of the body 131 to allow the rotation axis 121 of the winding drum 120 to penetrate with a clearance, and an elliptical or A perforation is formed in a rectangular shape and is coupled with a gap to the coupler 123 of the winding drum 120, so that when one end of the runbell body 131 contacts the interference portion 142 of the runbell drum 140, the runbell body 131 ) is moved away from the other end to temporarily stop the rotation of the winding drum 120 and then rotate it again. The area in contact with the part 142 is formed in the shape of a tilde like '~', so that when it touches the interference part 142 of the runbell drum 140, the interference increases and the forward rotation of the driven drum 120 is temporarily stopped. At the same time, the engaging striking end 134 and both ends of the runbell body 131, which generate a hitting sound of a predetermined size, are opposed to the engaging striking end 134 and are in the interference part 142 when the winding drum 120 rotates in reverse. The contact area is formed in a round shape like ')' to minimize interference when contacting the interference portion 142 of the runbell drum 140, so that the reverse rotation of the winding drum 120 is rotated smoothly without temporarily stopping. It includes a non-interfering end 135 that facilitates the return process of folding the ladder 200 from its unfolded state.

When the driven drum 120 is rotated by a wire (not shown) connected to the ladder 200, the run bell drum 140 has an end of the run bell bar 130 that rotates along the driven drum 120 and has a predetermined shape on the inner peripheral surface. By interfering with an odd number of interference portions 142 bent at an angle, the winding drum 120 rotates at a reduced speed to unfold at a slower speed than when the ladder 200 is unfolded by weight, and at the same time, the run bell bar 130 As a means for generating a predetermined striking sound when the interference part 142 is struck, the runbell drum body 141 has a flange protruding at a predetermined height on the edge of the disk, and the flange of the runbell drum body 141 It has an angle of 72 degrees and is bent in the shape of a hatchet like '^' toward the center of the runbell drum 140, and when the runbell bar 130 rotates forward, the hitting end 134 contacts and interferes with the winding drum ( After temporarily stopping the rotation of the run bell bar 130, the interference is released when the run bell bar 130 moves to the opposite part of the hitting end 134, so that the driven drum 120 rotates again, and the run bell bar 130 It includes an interference unit 142 that minimizes interference even if the non-interfering end 135 is contacted during reverse rotation.

Here, the interference unit 142 has an odd number at a predetermined interval in order to prevent the rotation of the winding drum 120 from completely stopping due to simultaneous contact and interference between the engaging striking ends 134 at both ends of the run bell bar 130. It is desirable that the dog be made up.

Meanwhile, according to the present invention, the engaging end 134 of the run bell bar 130 and the interference portion 142 of the run bell drum 140 have sharp shapes rather than round ends, so that they contact each other when they contact each other. The surface can be roughened to increase friction.

Therefore, according to the steel assembly 100, the lowermost end of the ladder 200 is connected to one end of a wire (not shown) and the wire (not shown) is wound around the winding drum 120, so that the ladder 200 When unfolded, the wire (not shown) is pulled from the winding drum 120 and the winding drum 120 rotates. At this time, both ends of the run bell bar 130 are connected to an odd number of interference portions ( 142), the winding drum 120 is slowed down to a predetermined speed or has a limited speed, thereby allowing the ladder 200 to safely descend.

In addition, both ends of the run bell bar 130 have a predetermined angle to the inner periphery of the run bell drum 140, and are not caught at the same time by the odd number of interference parts 142, but either end of the run bell bar 130 is not caught at the same time. After the rotation of the driven drum 120 is temporarily stopped due to contact and interference with the interference unit 142, one part of the run bell bar 130 is pushed away from the interference unit 142 by the weight of the ladder 200 and runs. As the bell bar 130 is moved to another location, one of the ends of the run bell bar 130 is released from the interference portion 142 and the winding drum 120 rotates again, as in the prior art. , the problem of the ladder 200 stopping in the middle of unfolding is solved by the configuration of the centrifugal brake, so the ladder 200 can be quickly unfolded, thereby greatly improving usability.

In addition, as a hitting sound is generated when both ends of the run bell bar 130 contact the interference portion 142 formed on the inner periphery of the run bell drum 140, when the ladder 200 is unfolded without a separate operating power source, it is directed toward the surroundings. By generating a predetermined noise, it is possible to prevent other evacuees from colliding when the ladder 200 is extended, and it is also possible to prevent criminals from entering by using the emergency escape ladder device.

Meanwhile, in the steel steel assembly 100 of the present invention, a rotary spanner (not shown) may be coupled to the shaft 122 opposite the rotation axis 121 of the winding drum 120, and through this, the ladder 200 When the ladder 200, which has been unfolded for emergency escape or for maintenance, needs to be folded and stored again, the winding drum 120 can be rotated in reverse using a rotating spanner (not shown).

The ladder stopper 300 is configured inside a border box (not shown) and limits the driving of the steel assembly 100 so that the ladder 200 is restrained while maintaining a folded state inside the border box (not shown). As a means for unfolding the ladder 200 from the border box (not shown), a stopper gear 310 and a base panel 110 are coupled to the winding drum 120 formed in the base panel 110 of the steel assembly 100. ) and is engaged with the stopper gear 310 to suppress the rotation of the stopper gear 310 or the winding drum 120. The stopper 320 is connected to the stopper 320 and allows the stopper 320 to rotate. When (320) and the stopper gear (310) are engaged, the ladder (200) is stored in a folded state inside a border box (not shown), and when the stopper (320) and the stopper gear (310) are disengaged, the ladder (200) is stored in a folded state. When the operation lever 330 and the operation lever 330 are rotated to unfold the ladder 200, the operation lever 330 and the stopper 320 are maintained in the rotated state, and when the rotation operation is released, the stopper 320 is maintained. As it returns to its original position, the stopper 320 and the stopper gear 310 are engaged so that the unfolding operation of the ladder 200 can be easily stopped if a person is located at the bottom of the ladder 200 during the unfolding operation of the ladder 200. It includes a stopper returner 340, etc.

Therefore, according to the ladder stopper 300, in order to unfold the ladder 200, the operation lever 330 is rotated counterclockwise through pressure of the evacuee's feet, etc., and the stopper 320 is rotated counterclockwise. In this case, the meshing state of the stopper 320 and the stopper gear 310 is released and the driven drum 120 formed on the base panel 110 of the steel assembly 100 rotates due to the weight of the ladder 200, and thus the ladder (200) unfolds.

In addition, in this state, when the unfolding operation of the ladder 200 must be stopped, the stopper can be stopped by simply rotating the operation lever 330, which has been rotated counterclockwise through pressure, counterclockwise or releasing the operation. As the stopper 320 is returned to its original position by the return body 340, the stopper 320 and the stopper gear 310 engage and the unfolding operation of the ladder 200 is stopped. As a result, the unfolding operation of the ladder 200 is stopped. If there are other evacuees at the location, it is possible to prevent other evacuees from colliding with the ladder 200 and causing a safety accident.

Meanwhile, in the present invention, the emergency escape ladder device further includes a bracket 400 that allows the ladder 200, the steel assembly 100, and the ladder stopper 300 to be configured inside a border box (not shown).

Here, the bracket 400 is bent in a 'ㄷ' shape in the center and fastening holes are formed in the center, so that the base panel 110 of the steel assembly 100 is fastened and stored in the center, and the ladder stopper 300 ) of the stopper 320 and the stopper returner 340 are installed, and the uppermost ends of the ladder 300 can be coupled to both sides of the central part.

Therefore, according to the bracket 400, the ladder 200, the steel steel assembly 100, and the ladder stopper 300 can be more easily installed inside the border box (not shown).

Hereinafter, the operation of the steel assembly for an emergency escape ladder and the device for an emergency escape ladder according to a preferred embodiment of the present invention will be described as follows.

First, when an emergency evacuation situation such as a fire occurs on the relevant floor of the building and it is necessary to evacuate to the lower floor, the ladder 200 built in a folded state inside the border box (not shown) is lowered toward the bottom of the evacuation space. It unfolds.

Here, the ladder 200 has a lowering speed limited by the descent assembly 100 so that the ladder 200 safely descends. The lowermost end of the ladder 200 is connected to one end of a wire (not shown). When the ladder 200 is unfolded as the wire (not shown) is wound around the driven drum 120, the wire (not shown) is pulled and unwound from the driven drum 120, and the driven drum 120 rotates. I do it.

At this time, as the driven drum 120 rotates, one of both ends of the run bell bar 130 that is installed and rotated so as to be spaced apart from the driven drum 120 is connected to the driven drum 120 and the run bell bar 130. The rotation of the driven drum 120 is temporarily stopped due to contact and interference with the interference portions 142 formed by bending an odd number at predetermined intervals on the inner peripheral surface of the runbell drum 140, which is configured to cover and accommodate.

Thereafter, one part of the run bell bar 130 is pushed away from the interference unit 142 by the weight of the ladder 200 and is spaced apart from the other part of the run bell bar 130 that is not interfered with by the interference unit 142, causing interference. The interference of the part 142 is released and the driven drum 120 rotates again, and the above operation is repeated until the ladder 200 is completely unfolded, so that the ladder 200 is safely rigid.

Therefore, according to the above-described structure, the spring spring 165 is pulled by the weight of the ladder 200, so the problem of the ladder 200 stopping in the middle of unfolding is solved and the ladder 200 is quickly unfolded. You can do it.

In addition, since the spring spring 165 is pulled by the weight of the ladder 200, the unfolded ladder 200 must be folded again by rotating the rotation axis 162 in the opposite direction using the rotation tool 190. In this case, the restoring force of the spring spring 165 assists the manager's efforts to rotate the rotation axis 162, so that the ladder 200 can be pulled up and folded with a small force.

In the above-described invention, specific embodiments have been described, but various modifications may be made without departing from the scope of the invention. Therefore, the scope of the invention should not be determined by the described embodiments, but by the claims and their equivalents.

Claims (7)

When the ladder 200 is unfolded from the border box (not shown) toward the bottom of the refuge space, the ladder 200 is unfolded at a slower speed than when the ladder 200 is expanded by weight,
A base panel 110 formed on the inner side of a border box (not shown); A winding drum configured to be rotatable on the base panel 110 and the other end of a wire (not shown) fixed to the lowest end of the ladder 200 is fixedly coupled to allow the wire (not shown) to be wound and wound according to the direction of rotation. (120); A run bell bar 130 that is fixedly coupled to the winding drum 120 with a gap and is spaced apart at a predetermined distance in the longitudinal direction when the winding drum 120 rotates; and a wire (not shown) connected to the ladder 200 as the ladder 200 unfolds, covering the winding drum 120 and the run bell bar 130. When the winding drum 120 is rotated, the end of the run bell bar 130 that rotates along the winding drum 120 interferes with the interference portion 142 formed on the inner peripheral surface so that the winding drum 120 unfolds at a slow speed. At the same time, it includes a runvel drum 140 that generates a hitting sound,
The run bell bar (130) is,
Bar-shaped runbell body (131); A clearance hole 132 is formed in the center of the runbell body 131 to allow the rotation axis 121 of the winding drum 120 to penetrate therethrough; And perforations are formed on both sides of the gap through hole 132 and are coupled to the coupler 123 of the winding drum 120 so that they can move apart, so that one end of the runbell body 131 is connected to the interference portion 142 of the runbell drum 140. ) A steel assembly characterized in that it includes an interference gap hole (133) that causes the runbell body (131) to move away from the other end side when in contact with ). delete The method of claim 1, wherein the run bell bar 130 is,
Among both ends of the runbell body 131, the portion that contacts the interference portion 142 during normal rotation of the winding drum 120 is formed in the shape of a tilde, so that interference increases when it contacts the interference portion 142 of the runbell drum 140. A hitting stage 134 that temporarily stops the forward rotation of the winding drum 120 and generates a hitting sound of a predetermined size;
Among both ends of the runbell body 131, the area that faces the hitting end 134 and is in contact with the interference part 142 when the winding drum 120 reverses is formed in a round shape, and the interference part of the runbell drum 140 ( A rigid assembly characterized in that it includes a non-interfering end (135) that minimizes interference when in contact with (142). The method of claim 1, wherein the runvel drum 140 is,
A runbell drum body 141 having a flange protruding at a predetermined height at the edge of the disk;
The flange of the runbell drum body 141 is bent in a hatchet shape toward the center of the runbell drum 140 at a predetermined angle, and when the runbell bar 130 rotates forward, the ends of the runbell bar 130 contact and interfere with each other. A steel assembly characterized in that it includes an interference portion 142 that temporarily stops the rotation of the driven drum 120. The method of claim 4, wherein the interference unit 142 is,
A rigid assembly characterized in that it consists of an odd number. A border box (not shown) installed in an escape hole formed at the bottom of the escape space of the building; A ladder 200 that is folded inside a border box (not shown) and unfolds toward the bottom of the evacuation space; A rigid assembly configured inside a border box (not shown) and allowing the ladder 200 to unfold at a slower speed than when the ladder 200 is unfolded by weight when the ladder 200 is unfolded from the border box (not shown) toward the bottom of the refuge space. (100); and a ladder configured inside a border box (not shown) and allowing the ladder 200 to be restrained while maintaining a folded state inside the border box (not shown) and at the same time allowing the ladder 200 to unfold from the border box (not shown). Includes a stopper 300,
The steel assembly 100 is,
A base panel 110 formed on the inner side of a border box (not shown); A winding drum configured to be rotatable on the base panel 110 and the other end of a wire (not shown) fixed to the lowest end of the ladder 200 is fixedly coupled to allow the wire (not shown) to be wound and wound according to the direction of rotation. (120); A run bell bar 130 that is fixedly coupled to the winding drum 120 with a gap and is spaced apart at a predetermined distance in the longitudinal direction when the winding drum 120 rotates; and a wire (not shown) connected to the ladder 200 as the ladder 200 unfolds, covering the winding drum 120 and the run bell bar 130. When the winding drum 120 is rotated, the end of the run bell bar 130 rotating along the winding drum 120 interferes with the interference portion 142 formed on the inner peripheral surface so that the winding drum 120 unfolds at a slow speed. It includes a runvel drum (140) that generates a hitting sound at the same time,
The run bell bar (130) is,
Bar-shaped runbell body (131); A clearance hole 132 is formed in the center of the runbell body 131 to allow the rotation axis 121 of the winding drum 120 to penetrate therethrough; And perforations are formed on both sides of the gap through hole 132 and are coupled to the coupler 123 of the winding drum 120 so that they can be moved apart, so that one end of the runbell body 131 is connected to the interference portion 142 of the runbell drum 140. ) An emergency escape ladder device comprising an interference gap 133 that causes the runbell body 131 to move to the other end when in contact with the emergency escape ladder device. The method of claim 6, wherein the ladder stopper 300 is:
A stopper gear 310 coupled to the winding drum 120 of the steel assembly 100;
A stopper 320 configured on the base panel 110 and engaged with the stopper gear 310 to suppress rotation of the stopper gear 310 or the driven drum 120;
It is connected to the stopper 320 and the stopper 320 is rotated so that when the stopper 320 and the stopper gear 310 are engaged, the ladder 200 is stored in a folded state inside the border box (not shown). and an operating lever 330 that allows the ladder 200 to unfold when the stopper 320 and the stopper gear 310 are disengaged; and
When rotating the operating lever 330, the operating lever 330 and the stopper 320 are maintained in the rotated state, and when the rotating operation is released, the stopper 320 returns to its original position and the stopper 320 and the stopper gear 310 An emergency escape characterized in that it includes a stopper returner 340 that engages the ladder 200 and stops the unfolding operation of the ladder 200 when a person is positioned under the ladder 200 during the unfolding operation of the ladder 200. Ladder device.

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