KR20230095734A - Portable emergency escape reinforced wire reck structure of wire rope - Google Patents

Abstract

Disclosed is a portable emergency escape apparatus. The portable emergency escape apparatus of the present invention comprises: a casing; a drum rotationally installed at the interior of the casing and on which a wire rope is wound; a reduction gear connected to the drum; a DC motor wherein a rotation shaft is connected to the reduction gear; and a seat belt worn by a user. A holding unit for holding the wire rope on a support structure is provided at an end portion of the wire rope. The holding unit includes at least one selected from the following: a wire with a relatively thick diameter compared to the wire rope; a wire extending from at least two strands; and a wire extended in a loop shape. An objective of the present invention is to provide the portable emergency escape apparatus with a reinforced holding structure which secures the wire rope to the support structure.

Description

Portable emergency escape device with reinforced hook structure of wire rope {PORTABLE EMERGENCY ESCAPE REINFORCED WIRE RECK STRUCTURE OF WIRE ROPE}

The present invention relates to a portable emergency escape device in which a hook structure of a wire rope is reinforced, and more particularly, in the event of an emergency such as a fire in a high-rise building, a user safely escapes to the ground by descending using a wire rope through a window of a building or the like. It relates to a portable emergency escape device with a reinforced hook structure of a wire rope that helps to do so.

In general, when an emergency such as a fire occurs in a building such as an apartment or a high-rise building, an emergency escape operation is performed to evacuate using an elevated firefighting ladder or to jump onto an air mat after installing an air mat on the ground.

However, escape using an elevated ladder has a place limitation requiring a large space to install the elevated ladder, and in the case of a high-rise building where the elevated ladder does not reach, there is a disadvantage of being useless.

In addition, air mats are subject to restrictions requiring a large number of people and a large space during installation, and in the case of high-rise buildings, escape time is delayed due to the uneasy psychology of escapees, and it is difficult to accurately jump off the air mat due to wind.

Accordingly, a drum rotatably installed inside the casing and around which a wire rope is wound, a reduction gear for decelerating the rotational speed of the drum in case of an emergency escape while connected to the drum, and a pole connected to the end of the wire rope and a pillar of a high-rise building An emergency escape device composed of a hook fixed to the hook and a safety belt connected to the lower end of the casing to bind the user's body has been proposed.

As described above, the emergency escape device using a wire rope has the advantage of being able to make an emergency escape by quickly descending through a window in the event of a fire. However, since the falling speed is reduced using only a reduction gear, the falling speed is not constant, causing problems such as not only the user feeling unstable, but also not being able to stably use the emergency escape device.

As an alternative, Patent Document 1 proposes an emergency escape device for high-rise buildings that can descend at a constant speed according to the weight of the escapee using the flow control valve of the speed controller, and can move by increasing or decreasing the descending speed if necessary.

The high-rise building emergency escape device of Patent Document 1 adjusts the rotation speed of the wire rope drum part through flow control, and for this purpose, a flow control valve for flow control is installed between the first and second piston cylinders. When the amount of fluid moving in the first and second piston cylinders increases, the rotational speed of the wire rope drum part increases because the volume change of the first and second piston cylinders increases, so that the escapee descends faster.

However, the method of controlling the descending speed using fluid as described above has disadvantages in that the volume and weight of the device are large and complicated, making it inconvenient to use. There is a concern that this may occur or become inoperable.

On the other hand, in the conventional emergency escape device, in the process of descending by hanging a wire rope on a pillar of a building or a veranda crossbar, the wire rope repeatedly rubs against a pillar of a building or a veranda crossbar, reducing tensile strength, and when the damage is severe, the wire rope There is a risk of breaking, so safety measures are required for this.

Patent Document 1: Korean Patent Publication No. 2018-0119180 (published on November 2, 2018)

The present invention was invented to solve the above problems, and an object of the present invention is to provide a portable emergency escape device having a reinforced hook structure for fixing a wire rope to a supporting structure.

Another object of the present invention is to provide a portable emergency escape device capable of safely descending at a constant speed regardless of the weight of the user by automatically controlling the descending speed in response to the weight of the user and performing braking using the braking resistance of the DC motor when descending. Its purpose is to provide

Another object of the present invention is to provide a portable emergency escape device having a structure in which the user can freely adjust the descent speed as needed during descent.

In order to achieve the above object, the present invention provides a casing, a drum rotatably installed inside the casing and around which a wire rope is wound, a reduction gear connected to the drum, and a DC motor having a rotational shaft connected to the reduction gear. And, in a portable emergency escape device equipped with a seat belt worn by a user, a hook portion for hanging the wire rope to a supporting structure is provided at the end of the wire rope, and the hook portion is relatively larger than the wire rope Provided is a portable emergency escape device comprising at least one selected from a wire having a thick diameter, a wire extending in at least two strands, and a wire extending in a loop shape.

The relatively thick wire may be connected to the end of the wire rope by lock processing.

The wire extending in at least two or more strands may be formed by lock processing or ice splice processing in a state in which a portion of the wire rope is folded by a predetermined length.

A hook capable of hanging on the wire in a state in which the wire is wound around the support structure may be connected to an end portion of the hooking part.

The wire extending in the loop shape may be formed by lock processing or ice splice processing in a state in which a portion of the wire rope is folded into a loop shape.

A braking resistance unit for determining a descending speed is connected between both ends of the power input terminal of the DC motor, and a resistance value of the braking resistance unit can be adjusted. A constant speed control unit may be provided to keep the descending speed constant regardless of the weight by changing the resistance value.

The constant speed controller may change the resistance value of the braking resistance unit by physically moving or transforming at least some parts according to the weight of the user.

Alternatively, the constant speed control unit may change the resistance value of the braking resistance unit by checking at least one of the voltage and current generated between the power input terminals of the DC motor differently for each weight of the user when descending. there is.

Alternatively, the constant speed control unit may change the resistance value of the braking resistance unit by checking the rotation amount of one selected from among the DC motor, the drum, the reduction gear, and the guide roll for each weight of the user during descent. there is.

A brake function may be provided by shorting both ends of the power input terminal of the DC motor.

The portable emergency escape device in which the hanger structure of the wire rope is reinforced according to the present invention has the following effects.

First, the hook portion directly coupled to the support structure is configured to include a relatively thick wire, at least two or more wires, a loop-shaped wire, etc., so that the tensile strength of the wire rope is improved and safety can be improved.

Second, when descending, braking is performed using the braking resistance of the DC motor, and the descending speed is automatically controlled in response to the user's weight, so that the descending speed can be safely descended at a constant speed regardless of the weight of the user.

Third, just before descending, the weight is placed on the wire rope fixed to the building so that it is taut, and the foot is placed on the railing of the building to establish a stable posture. . Therefore, since an impact load is not applied to the wire rope, damage to the wire rope can be prevented and safety accidents can be prevented.

Fourth, right before the descent, the wire rope is not loosened even if it is pulled tight, so the user can start the descent after fully preparing the attitude or mind for the descent.

Fifth, in the case of a fire in a high-rise building, unlike the existing descending machines where one person has to wait and escape one by one even in an urgent situation in which a few seconds are contested, multiple users can quickly escape individually using their own portable emergency escape devices.

The following drawings attached to this specification illustrate preferred embodiments of the present invention, and together with the detailed description of the present invention serve to further understand the technical idea of the present invention, the present invention is the details described in such drawings should not be construed as limited to
1 is a perspective view showing the appearance of a portable emergency escape device according to an embodiment of the present invention.
FIG. 2 is a perspective view illustrating an internal configuration by separating the cover from FIG. 1 .
Figure 3 is a front view of Figure 2;
FIG. 4 is a perspective view illustrating a modified example of the down start switch in FIG. 1;
5 is a perspective view showing the appearance of a portable emergency escape device with a safety handle according to another embodiment of the present invention.
6 is a perspective view showing an example of a safety belt connected to a wire rope according to another embodiment of the present invention.
7 and 8 are perspective views showing examples of use of the portable emergency escape device.
9 to 11 are perspective views showing the appearance of a portable emergency escape device according to a preferred embodiment of the present invention.
12 is a wiring diagram schematically showing a configuration for braking and stopping a DC motor.
13 is a circuit diagram illustrating a configuration in which a constant speed controller performs PWM control.
14 is a perspective view showing an example of use of a portable emergency escape device having a wire rope hanging structure reinforced according to an embodiment according to a preferred embodiment of the present invention.

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

1 is a perspective view showing the appearance of a portable emergency escape device according to a preferred embodiment of the present invention, FIG. 2 is a perspective view showing the internal configuration by removing the cover from FIG. 1, and FIG. 3 is a front view of FIG. 2 .

1 to 3, the portable emergency escape device according to a preferred embodiment of the present invention has a casing 100 of a predetermined shape, rotatably installed inside the casing 100, and a wire rope 103 is wound. A drum 101, a reduction gear 109 connected to the drum 101 to reduce the rotational speed of the drum 101 in case of emergency escape, and a DC motor 102 having a rotation shaft connected to the reduction gear 109 , The braking resistance unit 106 connected to the DC motor 102, the constant speed controller (see 115 in FIG. 12) that keeps the descending speed constant regardless of the weight, and the lower part of the casing 100, It includes a safety belt 104 for fixing the upper body and a hook 105 connected to the end of the wire rope 103 and hooked to a predetermined support structure fixed to a high-rise building.

The drum 101 is disposed in the casing 100 and rotates passively by the force of pulling the wire rope 103 by the descent of the escapee. Both ends of the rotating shaft of the drum 101 are preferably supported within the casing 100 to prevent the user's load from leaning to one side of the reduction gear 109.

As the wire rope 103, lines of various materials may be employed, including a conventional rope-type wire rope. Additionally, a portion of the length of the wire rope 103 or the entire length may be covered with a non-combustible coating or a protective tube to ensure flame resistance in case of fire. In addition, a light emitting member (not shown) such as an LED or an EL wire rope is installed on at least a portion of the wire rope 103 to secure visibility for identifying the descending state in case of fire, on a cloudy day, or at night.

The reduction gear 109 reduces the descending speed of the escapee at a predetermined gear ratio and transmits it to the rotating shaft. The reduction gear 109 may be composed of various known gear assemblies.

The DC motor 102 generates a braking force by rotating a rotating shaft by an external force. The DC motor 102 is not actively rotated by an external power source, but the rotating shaft together with the drum 101 is passively rotated by the pulling force of the wire rope 103 caused by the descent (free fall movement) of the escapee. rotate to

The braking resistance unit 106 is connected between both ends of the power input terminal of the DC motor 102 to determine the descending speed. In case of emergency escape, if the braking resistor 106 is controlled to have a resistance value corresponding to the escapee's weight, the descending speed can be maintained constant regardless of the weight of the escapee. In addition, a brake function can be provided by shorting both ends of the power input terminal of the DC motor 102 to directly contact each other. As will be described later, separate start switches 112 and 113 may be connected to both ends of the power input terminal. By operating the start switches 112 and 113, the DC motor 102 is shorted and brakes. The start switches 112 and 113 are installed to be exposed to the outside of the casing 100 .

The braking force generated by the power generation of the DC motor 102 is changed according to the resistance value of the braking resistance unit 106 . That is, if the resistance value of the braking resistor 106 connected to the DC motor 102 is relatively large, the energy consumed as Joule heat in the braking resistor 106 is large, so the braking force of the DC motor 102 is weak, so the descending speed is faster, and when the resistance value is relatively small, the energy consumed as Joule heat is small and the braking force of the DC motor 102 is large, so the descending speed is slow. When the resistance value is 0, the descent is substantially stopped because the braking force is large because it is in a short circuit state.

For example, when the resistance value of the braking resistance unit 106 is relatively small, such as 100 ohms (Ω), the braking force generated by the DC motor 102 is large, so that the drum 101 connected to the rotating shaft of the DC motor 102 slowly moves. Since the speed at which the wire rope 103 is released by rotation is slow, the descent is made slowly. Conversely, when the resistance value of the braking resistance unit 106 is adjusted to gradually increase, such as 200Ω, 300Ω, or 400Ω, the braking force generated by the DC motor 102 gradually weakens and the descending speed gradually increases. As described above, the resistance value of the braking resistance unit 106 determines the descending speed, so the resistance value corresponding to the weight of the user is controlled so that the user (escaper) can feel safe.

In the start switches 112 and 113, both ends of the power input terminal of the DC motor 102 are connected to the braking resistor 106 from the first state in which both ends of the power input terminal of the DC motor 102 are shorted to each other by a switching operation. Switch to state 2 and start the downward movement. The user can also stop at a desired point by operating the start switches 112 and 113 if necessary during descent.

The start switches 112 and 113 are configured in the form of a button in which a cable of a predetermined length is extended to the inside of the casing 100 . Alternatively, the start switch 112 may be configured in the form of a line connected to an end of a predetermined safety pin (not shown) inserted into the casing 100 as shown in FIG. 4 . Alternatively, the start switches 112 and 113 may also be configured in the form of a lever, a dial, or an on/off button installed on the outer surface of the casing 100 without an extension cable.

The seat belt 104 has a ring shape into which the user's arm can be inserted. The seat belt 104 is preferably worn on both armpits of the user.

The seat belt 104 can be connected to or detached from the front of the chest through a predetermined fastener in a state where both arms of the user are inserted into the seat belt 104 .

A ring-shaped safety handle may be attached to one side of the seat belt 104 as shown in FIG. 5 so that the user can hold and hang it by hand during use. In addition, when the casing 100 is fixed to one side of a building during use, the safety belt 104 may be connected to the end of the wire rope 103 released from the drum 101 as shown in FIG. 6 .

In case of emergency escape, the hook 105 in the form of a biner connected to the end of the wire rope 103 is hooked to the pole side and fixed, and the seat belt 104 is hooked to the user's upper body, that is, the armpit. Specifically, as shown in FIG. 7, a biner-shaped hook 10 is hung on a rod-shaped support 1 installed on a veranda or terrace of a building, or as shown in FIG. The hook 10 is hooked to the wire rope 103 in a state where the rod-shaped support 1 is wound and bound.

9 to 11 show an example in which a hook 125 is provided at the end of the wire rope 103 so that the wire rope 103 can be wound around and bound to a support structure such as a building pillar or a rod-shaped support 1. has been

Specifically, as shown in FIG. 9, the hook 125 includes a wire 120 having a relatively thick diameter compared to the wire rope 103 and a biner-shaped hook 105 connected to the end of the wire 120. may consist of For example, the wire rope 103 may be composed of a wire having a diameter of 2.4 mm and the thick wire 120 may be composed of a wire having a diameter of 3 mm. Both ends of the thick diameter wire 120 are connected to the end of the wire rope 103 and the hook 105, respectively, and the connection portion is fixed by a lock process in which the slip 121 is inserted and compressed.

Alternatively, as shown in FIG. 10, the hook part 125 is a wire assembly part 123 extending at least two strands by folding a part of the wire rope 103 by a predetermined length and the wire assembly part It may be composed of a biner-shaped hook 105 connected to the end of 123. Both ends of the wire assembly unit 123, that is, the final end of the wire and the folding portion are fixed by a locking process in which the slip 121 is inserted and compressed. The lock processing may be replaced with an eye splice processing that binds the strands of the wire rope 103 by interweaving.

Alternatively, the hook 125 may be composed of a loop wire 124 extending in a loop shape as shown in FIG. 11 . In this case, since the binding is possible by passing the body casing 100 through the loop wire 124 in a state where the hook part 125 is wound around the support structure, a separate hook is not required. The loop wire 124 may be part of the wire rope 103, or may be formed as a separate wire connected to the wire rope 103. The wire shape of the loop wire 124 is fixed by a locking process in which the slip 121 is inserted and crimped. Similarly, the lock machining can be replaced with an eye splice machining.

As shown in FIG. 12, both ends of the power input terminal of the DC motor 102 are connected to the start switches 112 and 113 for selectively operating the brake (short state), and are connected in parallel with the start switches 112 and 113. Between both ends of the power input terminal, a plurality of resistance elements having different resistance values are connected in parallel or in series to adjust the descending speed, and the resistance value of the braking resistance unit 106 is changed to A constant speed controller 115 is connected to keep the descending speed constant.

Alternatively, the braking resistor 106 may be composed of a conventional rotary or sliding variable resistor (volume). Alternatively, the braking resistor 106 may be composed of a plurality of LEDs or motors. In addition, the braking resistance unit 106 may be composed of various electrical/electronic components (or devices) capable of adjusting the total resistance value.

The constant velocity control unit 115 changes the resistance value of the braking resistance unit 106 by physically moving or transforming at least some parts according to the user's weight. Preferably, the constant velocity control unit 115 is a predetermined guide roll to which the axis of the drum 101 or the wire rope 103 contacts through a spring or plate-shaped spring (not shown) disposed on one side of the inside of the casing 100. The resistance value of the braking resistance unit 106 is changed by sensing the mechanical deformation (not shown) differently according to the weight of the user. Specifically, when the user's weight is, for example, 100 kg, the axis of the drum 101 or the axis of the guide roll is mechanically deformed by the first displacement in response to the user's weight. It is physically moved or deformed by 1 length to automatically set the resistance value of the braking resistance unit 106 to, for example, 100Ω. Accordingly, since a relatively large braking force is generated in the DC motor 102, the user descends while the wire rope 103 is gradually released. On the other hand, when the user's weight is, for example, 50 kg, the constant speed controller 115 mechanically deforms the axis of the drum 101 or the axis of the guide roll by the second displacement in response to the user's weight, and interlocks with this to move the spring to a second length. The resistance value of the braking resistance unit 106 is automatically set to, for example, 400 Ω by physically moving or deforming by the amount. Accordingly, since a relatively small braking force is generated in the DC motor 102, the user descends while the wire rope 103 is released relatively quickly compared to the case of 100 kg. In this way, since the constant speed control unit 115 controls the braking force to be generated differently for each user's weight, anyone can descend at a constant speed regardless of the user's weight. If there is no speed control function of the constant speed control unit 115, the user's body weight of 100 kg is significantly higher than that of 50 kg, while applying a significantly larger rotational force (torque) to the rotation shaft of the DC motor 102. Descent at a significantly faster speed will do

Alternatively, the constant speed control unit 115 checks at least one of the voltage and current of electricity generated between both ends of the power input terminal of the DC motor 102 differently for each user's weight during descent, and the braking resistance unit 106 resistance value can be changed. To this end, the constant speed controller 115 may include a conventional current sensor or voltage sensor. The constant speed controller 115, for example, when the user is an adult, weighs more than a child, and accordingly, electricity of relatively high power is generated between both ends of the power input terminal of the DC motor 102. The control unit 115 checks at least one of the voltage and current of the generated electricity, detects the power generation amount of the DC motor 102 differently according to the weight of the user, and changes the resistance value of the braking resistor unit 106. The process of changing the resistance value of the braking resistor 106 to keep the descending speed constant regardless of the weight of the user is the same as the method described above.

Alternatively, the constant speed control unit 115 may change the resistance value of the braking resistance unit by checking the rotation amount of one selected from among the DC motor, drum, reduction gear, and guide roll for each weight of the user during descent. . The process of changing the resistance value of the braking resistor 106 to keep the descending speed constant regardless of the weight of the user is the same as the method described above.

As another alternative, the constant speed control unit 115 may include a dip switch for selecting a range that allows the user to select a range to which the user's body weight belongs. In this case, the dip switch for selecting the range may be classified into, for example, 'adult' and 'children', and may be classified as '10 to 30 kg', '31 to 60 kg', '61 to 90 kg', and '91 to 120 kg'. It may be classified according to a predetermined weight range. The process of changing the resistance value of the braking resistor 106 to keep the descending speed constant regardless of the weight of the user is the same as the method described above.

More preferably, the constant velocity control unit 115 performs pulse control such as PWM (Pulse Width Modulation) using a predetermined switching element 115d connected to the braking resistance unit 106 to correlate with the user's weight. It is possible to maintain a constant rate of descent. When PWM control is performed, substantially the same as changing the resistance value of the braking resistor 106 by changing the duty ratio of the pulse width to the voltage applied to the braking resistor 106 for each weight of the user. effect can be obtained. The pulse control is not limited to the PWM method and may be performed using various known pulse modulation methods or electrical signal control methods. Hereinafter, the configuration of the constant speed control unit 115 will be described in detail, focusing on an example of performing pulse control using a PWM method.

As shown in FIG. 13, the constant speed controller 115 includes an SMPS regulator 115a, a voltage detector 115b, a PWM control microcomputer 115c, a switching element 115d, a voltage detector 115b and a B contact relay 115f. includes

The SMPS regulator 115a outputs a constant voltage for driving the PWM control microcomputer 115c and the B contact relay 115f by controlling the switching of the electromotive force generated by the DC motor 102.

The voltage detector 115b detects the voltage of the electromotive force generated by the DC motor 102 and transmits it to the PWM control microcomputer 115c.

The PWM control microcomputer 115c detects the weight of the user from the voltage value detected by the voltage detection unit 115b and performs PWM control based on this, and the braking resistance unit 106 substantially connected to both ends of the DC motor 102. ) to change the resistance value. At this time, the PWM control microcomputer 115c controls the duty ratio of the pulse width by driving the switching element 115d such as a Field Effect Transistor (FET) connected to the braking resistor 106 . Here, the FET can be replaced with various known semiconductor switching devices.

The B contact relay 115f connects the braking resistor 106 to both ends of the DC motor 102 even when at least one of the SMPS regulator 115a, the PWM control micom 115c, and the switching element 115d fails. It acts as a safety device to prevent a fall accident due to inability to brake. That is, the B contact relay 115f is a switch that is normally in an on state where the contacts are attached to each other (when there is no control signal input), and is switched to an off state where the contacts are separated from each other when a control signal is input. Since it has a structure (Normally Closed), even if at least one of the SMPS regulator 115a, PWM control microcomputer 115c, and FET fails, it is switched to an on state where the contacts are attached to each other, so both ends of the DC motor 102 Connects the braking resistor 106 to

During the normal operation of PWM control, the PWM control microcomputer 115c inputs a control signal to the B contact relay 115f so that the contacts of the B contact relay 115f are turned off. In addition, the PWM control micom 115c is connected between the source terminal of the FET, which is the switching element 115d, and the shunt resistor 115e (see 116 in FIG. 12) to measure the current flowing through the switching element 115d do. The PWM control microcomputer 115c detects the failure of the switching element 115d by measuring the current value, and if the current does not flow or is shorted, normal PWM control is impossible, so the B contact relay 115f is disconnected. By switching to the on state where they are attached to each other, the braking resistance unit 106 is connected to both ends of the DC motor 102. To this end, the B contact relay 115f is connected in parallel to the switching element 115d and the shunt resistor 115e and connected in series to the braking resistor 106.

14 is a perspective view showing an example of use of a portable emergency escape device having a wire rope hanging structure reinforced according to an embodiment according to a preferred embodiment of the present invention.

In the event of an emergency situation such as a fire in a high-rise building, the user (escapee) winds the fixed length section of the end of the wire rope (103) around a support structure such as a building column or rod-shaped support (1), and then uses a biner-shaped hook (105). ) to the wire rope 103, or by passing the body casing 100 through the loop wire 124, the wire rope 103 can be quickly bound to the support structure only by pulling. At the end of the wire rope 103, the part that is directly in contact with the support structure is a thick diameter wire 120, a wire assembly part 123 extending at least two strands, or a loop processed into a loop shape. Since the hook portion 125 made of the wire 124 is located, it is possible to prevent a decrease in tensile strength due to friction with the support structure.

After binding the wire rope 103 to the supporting structure, weight is put on the wire rope fixed to the building so that it is taut, and the foot is placed on the building handrail to take a posture for descending.

Then, preferably, when the start switches 112 and 113 are operated by pressing a button or pulling a string, the DC motor 102 starts from the first state in which both ends of the power input terminal of the DC motor 102 are shorted to each other. Both ends of the power input terminal are converted to a second state in which they are connected to the braking resistor 106 . Accordingly, the braking force generated by the DC motor 102 is weakened, so that the line can be smoothly released while descending. Therefore, since an impact load is not applied to the wire rope, it is possible to prevent safety accidents such as wire rope breaking.

The descending speed may be maintained constant regardless of the weight of the user by the constant speed controller 115 . The constant speed control unit 115 physically moves or transforms at least some parts according to the user's weight, checks the amount of power generation generated between both ends of the power input terminal of the DC motor 102 when descending differently for each weight, or sets the user's The resistance value of the braking resistor 106 is changed according to the weight range setting value of the dip switch for selecting one range or by performing PWM control. For example, when used by an adult with a relatively heavy weight, the resistance value of the braking resistor 106 is lowered to an appropriate value to reduce the descending speed, and when used by a child with a relatively light weight, the braking resistor 106 ) by increasing the resistance value to an appropriate value to increase the descent speed, the descent speed can always be maintained constant regardless of the weight.

When the user almost reaches the ground and wants to stop at a desired position, by operating the start switches 112 and 113 to short both ends of the power input terminal of the DC motor 102, the drum ( Since the rotation of 101 is suppressed and the wire rope 103 cannot be unwound, descent is stopped.

Although the present invention has been described above with limited embodiments and drawings, the present invention is not limited thereto, and within the equivalent scope of the technical idea of the present invention by those skilled in the art to which the present invention belongs Of course, various modifications and variations are possible.

100: casing 101: drum
102: DC motor 103: wire rope
104: seat belt 105: hook
106: braking resistor 109: reduction gear
112,113: start switch 114: safety handle
115: constant speed controller 115a: SMPS regulator
115b: voltage detection unit 115c: PWM control microcomputer
115d: switching element 115e: shunt resistor
115f: B contact relay 121: sleep
125: hanging part

Claims (10)

A portable device having a casing, a drum rotatably installed inside the casing and around which a wire rope is wound, a reduction gear connected to the drum, a DC motor having a rotating shaft connected to the reduction gear, and a safety belt worn by a user. In the emergency escape device,
The end of the wire rope is provided with a hook for hanging the wire rope to the support structure,
The hook part,
A portable emergency escape device comprising at least one selected from a wire having a relatively thick diameter compared to the wire rope, a wire extending in at least two strands, and a wire extending in a loop shape. According to claim 1,
The relatively thick wire is a portable emergency escape device, characterized in that connected to the end of the wire rope by lock processing. According to claim 1,
The portable emergency escape device, characterized in that the wire extending to at least two or more strands is formed by lock processing or ice splice processing in a state in which a portion of the wire rope is folded by a predetermined length. According to claim 2 or 3,
A portable emergency escape device, characterized in that a hook capable of hanging on the wire in a state where the wire is wound around the support structure is connected to the end of the hook part. According to claim 1,
The wire extending in the loop shape is a portable emergency escape device, characterized in that formed by lock processing or ice splice processing in a state in which a part of the wire rope is folded into a loop shape. According to claim 1,
A braking resistor for determining a descending speed is connected between both ends of the power input terminal of the DC motor,
The braking resistance unit can adjust the resistance value,
A portable emergency escape device characterized in that it is provided with a constant speed control unit that is connected to the braking resistance unit and changes the resistance value of the braking resistance unit according to the user's weight to maintain a constant descent speed regardless of the user's weight. The method of claim 6, wherein the constant speed control unit,
A portable emergency escape device, characterized in that at least some parts are physically moved or deformed according to the weight of the user to change the resistance value of the braking resistance unit. The method of claim 6, wherein the constant speed control unit,
When descending, at least one of the voltage and current generated between the power input terminals of the DC motor is checked differently for each weight of the user to change the resistance value of the braking resistor. The method of claim 6, wherein the constant speed control unit,
When descending, the portable emergency escape device, characterized in that the resistance value of the braking resistance unit is changed by checking the rotation amount of any one selected from among the DC motor, the drum, the reduction gear and the guide roll differently according to the weight of the user. According to claim 6,
A portable emergency escape device, characterized in that a brake function is provided when both ends of the power input terminal of the DC motor are shorted.

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