Escape device

Abstract

An escape device comprises a first rectangular frame rail and a second rectangular frame rail, the first rectangular frame rail and the second rectangular frame rail are parallel and correspond to each other at an interval and define an open rail space, and each of the first frame rail and the second frame rail is provided with an upper frame part, a lower frame part and two side frame parts. The inverted-U-shaped frames are connected between the inner side faces of the first frame rail and the second frame rail in a bridging mode respectively, and each frame is provided with an open space communicated with the track space. And the fixed step is connected to the bottom of the frame part on one side of the first frame rail and the second frame rail. And the pedal is erected on the lower frame parts of the first frame rail and the second frame rail and is at least erected on one frame of the lower frame parts. The movable ladder is provided with a plurality of ladder rods, a plurality of connecting rods and a baffle which is parallel to the ladder rods and is connected between the two connecting rods at the tail end, and the movable ladder is in sliding fit with the first frame rail and the second frame rail through the connecting rods on the two sides, so that the movable ladder can move in the rail space.

Description

Technical Field

[0001] This invention relates to an escape device, and more particularly to an escape device used in conjunction with iron windows or flower beds. Background Technology

[0002] In recent years, public safety incidents have occurred frequently, causing great harm and even casualties to the public. In particular, once a fire breaks out, most people are unable to escape due to smoke inhalation and fainting. Although ordinary iron bars have escape hatches to facilitate firefighters' escape using ladders, fires usually occur suddenly and unexpectedly. After a fire breaks out, the waiting time until the firefighters arrive often causes significant delays. Therefore, if escape devices could be integrated into iron bars, allowing people to save themselves while waiting for rescue personnel to arrive, the best escape and prevention measures could be achieved.

[0003] While existing safety escape structures also incorporate iron window frames, these frames are structurally complex, making them unsuitable for emergency use, and they cannot be used across multiple floors. Summary of the Invention

[0004] To at least partially solve the aforementioned problems, the escape device of the present invention includes a movable ladder positioned around the periphery of a first and second frame rail, such that the total length of the movable ladder is equal to the total length of the outer frame of the first and second frame rails. Thus, after the movable ladder is fully lowered, the escape device can be used on the second to fourth floors of a building, in accordance with the use of general residential floors.

[0005] The escape device of the present invention can be further extended by adding an arched ladder to the bottom of the first and second frame rails, so that the total length of the movable ladder can be used on the fifth floor of a residential building.

[0006] The escape device of the present invention cuts the first and second frame rails to form four L-shaped rail structures to form a rectangular frame. The modular frame facilitates transportation and assembly.

[0007] Therefore, the escape device proposed in this invention includes: a first frame rail and a second frame rail, both rectangular in shape, parallel and spaced apart, defining an open track space. The first frame rail and the second frame rail each have an upper frame portion, a lower frame portion, and two side frame portions. Multiple frames, generally inverted U-shapes, each frame bridging the middle of an inner side surface of the first frame rail and the second frame rail, and each frame having an open space communicating with the track space. A fixed step is connected to the bottom of one of the side frame portions of the first frame rail and the second frame rail. A step is mounted on the lower frame portion of the first frame rail and the second frame rail, and at least on one of the frames of the lower frame portion of the first frame rail and the second frame rail. A movable ladder is capable of bending at an angle and has multiple step bars, multiple connecting rods pivotally connected to both ends of each step bar, and a baffle parallel to the aforementioned step bars and connected between the two connecting rods at the very end. The movable ladder is slidably engaged with the aforementioned connecting rods on both sides in the first frame rail and the second frame rail, thereby enabling the movable ladder to move within the rail space.

[0008] According to the escape device of the present invention, the height of the baffle is lower than the bottom of a top plate of the frame, so that when the baffle moves with the movable ladder, it can pass through the open space of the aforementioned frame and move back and forth in the track space.

[0009] According to the escape device of the present invention, it further includes a locking plate, which is disposed on the lower frame portion of the first frame rail and the second frame rail and adjacent to one side of the fixed step. The locking plate has a locking hole, and the baffle is provided with an ear corresponding to the locking hole, so that the ear of the baffle can pass through the locking hole of the locking plate to facilitate locking and fixing.

[0010] The escape device according to the present invention further includes a descent device having a hanging part for hanging on one of the frames.

[0011] According to the escape device of the present invention, it further includes a plurality of tripods, which are fixed to the bottom of the lower frame portion of the first frame rail and the second frame rail to facilitate locking to a wall.

[0012] According to the escape device of the present invention, it further includes an arched ladder and a hook chain connected to the end of the arched ladder. The arched ladder has two arc-shaped rods and a plurality of step rods connected between the two arc-shaped rods. The front end of the arched ladder is pivotally connected to the two connecting rods at the front end of the movable ladder, and its end is hooked to the movable ladder by the hook chain, so that the arched ladder is placed below the first frame rail and the second frame rail.

[0013] According to the escape device of the present invention described above, the pedal rests on two frames on the lower frame portions of the first frame rail and the second frame rail.

[0014] According to the escape device of the present invention, the fixed staircase has at least two steps, the uppermost step being located on the bottom side of one of the side frames of the first frame rail and the second frame rail.

[0015] According to the escape device of the present invention, it further includes a plurality of outer frame members. The first frame rail is formed by four L-shaped rails joined together to form a rectangle. The second frame rail is also formed by four L-shaped rails joining together to form a rectangle. The aforementioned outer frame members respectively cover the joint of the aforementioned rails, so as to lock the outer frame members and the aforementioned rails together by a plurality of locking members.

[0016] The escape device according to the present invention further includes a plurality of window strips, which are respectively installed on the outer side of the second frame rail.

[0017] Based on the above, compared to the existing escape iron window structures which are complex and unsuitable for multi-story buildings, the escape device of this invention places the movable ladder on the periphery of the first and second frame rails. These first and second frame rails are configured according to the width of the floor, so the total length of the movable ladder is equal to the total length of the outer frame of the first and second frame rails. This effectively increases the total length of the movable ladder. After the movable ladder is fully lowered, the escape device can be used on the second to fourth floors, conforming to the use of typical residential floors. Furthermore, by adding an arched ladder, the total length of the movable ladder is further increased, allowing it to be used on the fifth floor of a residential building. Attached Figure Description

[0018] [ Figure 1 [Image 1] is a perspective view of the first preferred embodiment of the escape device of the present invention.

[0019] [ Figure 2 [Image 1] is a second perspective view of the first embodiment, illustrating the operational state of the movable ladder with the pull-down portion.

[0020] [ Figure 3 [Image 1] is a third perspective view of the first embodiment, illustrating the movable ladder in its fully lowered state to the ground.

[0021] [ Figure 4 [Image 1] is a partial enlarged view of the movable ladder, illustrating the steps and connecting rods of the ladder.

[0022] [ Figure 5 [Image] is an enlarged view showing the frame, the locking plate, and the baffle.

[0023] [ Figure 6 [Image 1] is a schematic diagram illustrating the use of the escape device of the present invention with the addition of window strips.

[0024] [ Figure 7 [Image 1] is a perspective view of the second preferred embodiment of the escape device of the present invention.

[0025] [ Figure 8 [Image 1] is another perspective view of the second embodiment, illustrating the movable ladder in its fully lowered state to the ground.

[0026] [ Figure 9 [Image 1] is an exploded perspective view of the third preferred embodiment of the escape device of the present invention.

[0027] Explanation of markings in the diagram: 10: First frame rail; 11: Upper frame; 111: Inner side; 121: Inner side; 12: Lower frame; 121: Inner side; 122: Inner side; 13: Side frame; 14: Side frame; 15: Locking plate; 151: Lock hole; 152: Fastener; 16: Outer frame; 161: Through hole; 17: Locking piece; 20: Second frame rail; 21: Upper frame; 211: Inner side; 22: Lower frame; 221: Inner side; 23: Side frame; 24: Side frame; 25: Window strip; 30: Frame; 31: Open space; 32: Top plate; 33: Side plate; 40: Fixed step; 41: 42: Step; 43: Step; 50: Step; 60: Movable ladder; 61: Step bar; 62: Connecting rod; 63: Baffle; 631: Ear; 64: Pulley; 70: Tripod; 71: Top bar; 80: Arched ladder; 81: Curved bar; 82: Step bar; 90: Hook chain; 100: Escape device; 101: Track space; 102: Passageway; 103: Large frame space; 110: Rail; 120: Lock hole; 210: Rail; 220: Lock hole; 200: Escape device; 300: Escape device; 400: Descending device; 410: Hanging part; 500: Drain cover. Detailed Implementation

[0028] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments described are not intended to limit the present invention. For example, […]. Figure 1 ], [ Figure 2 As shown in the figure, a first preferred embodiment of the escape device 100 of the present invention includes a first frame rail 10, a second frame rail 20, a plurality of frames 30, a fixed step 40, a tread 50, and a movable ladder 60.

[0029] The first frame rail 10 and the second frame rail 20 are both rectangular, parallel and spaced apart, defining an open track space 101. The first frame rail 10 and the second frame rail 20 each have an upper frame portion 11, 21, a lower frame portion 12, 22, and two side frame portions 13, 23, 14, 24.

[0030] Sequence Parameters Figure 5 The aforementioned frame 30 is generally inverted U-shaped. Each frame 30 is bridged between an inner side 111, 211, 121, 221 of the upper frame portion 11, 21 and the lower frame portion 12, 22 of the first frame rail 10 and the second frame rail 20, respectively. Each frame 30 has an open space 31 communicating with the track space 101. Figure 5 In this embodiment, a frame 30 is symmetrically arranged on the left and right sides of the upper frame portions 11 and 21 of the first frame rail 10 and the second frame rail 20, and a frame 30 is also symmetrically arranged on the left and right sides of the lower frame portions 12 and 22 of the first frame rail 10 and the second frame rail 20. In this embodiment, the frame 30 is inverted U-shaped, having a top plate 32 and two side plates 33 connecting the two ends of the top plate 32 and the inner sides 111, 211, 121, 212 of the aforementioned lower frame portions 12 and 22.

[0031] The fixed step 40 is connected to the bottom of one of the side frame portions 13, 23 of the first frame rail 10 and the second frame rail 20, and has at least two step plates 41, 42. Figure 1 In this embodiment, the fixed step 40 is located at the bottom of the right side frame portions 13 and 23. During actual installation, the installation position of the fixed step 40 can be adjusted according to the installation environment, such as on the left side frame portions 14 and 24 or the right side frame portions 13 and 23. In this embodiment, the fixed step 40 has three steps 41, 42, and 43, with the top step 41 located at the bottom of the right side frame portions 13 and 23 of the first frame rail 10 and the second frame rail 20.

[0032] The pedal 50 is a wide, rectangular, hollow cover plate, which is disposed on the lower frame portions 12 and 22 of the first frame rail 10 and the second frame rail 20, and rests on at least one of the frames 30 on the lower frame portions 12 and 22 of the first frame rail 10 and the second frame rail 20. In this embodiment, the pedal 50 rests on the left and right frames 30 of the lower frame portions 12 and 22 of the first frame rail 10 and the second frame rail 20. This provides a larger stepping space, allowing one to three adults to step on it, and also increases the load-bearing capacity of the pedal 50.

[0033] The movable ladder 60 is flexible and can be assembled around the periphery of the first and second frame rails 10 and 20. In this embodiment, the total length of the movable ladder 60 is equal to the total length of the periphery of the first and second frame rails 10 and 20. (Refer to...) Figure 3 and Figure 4The detailed drawing of the movable ladder 60 shows that the movable ladder 60 has multiple step rods 61, multiple connecting rods 62 pivotally connected to both ends of each step rod 61, and a baffle 63 parallel to the aforementioned step rods 61 and connected between the two most distant connecting rods 62. The movable ladder 60 utilizes the aforementioned connecting rods 62 on both sides to slide within the first frame rail 10 and the second frame rail 20, allowing the movable ladder 60 to move within the track space 101. Furthermore, the height of the baffle 63 is lower than the bottom of the top plate 32 of the frame 30, so that the baffle 63 can smoothly pass through the open space 31 of the aforementioned frame 30 as the movable ladder 60 moves, and move back and forth in the track space 101, such as... Figure 5 As shown.

[0034] The escape device 100 further includes a locking plate 15, which is disposed on the lower frame portions 12 and 22 of the first frame rail 10 and the second frame rail 20, and adjacent to one side of the fixed step 40. Figure 5 As shown in the enlarged view, the locking plate 15 has a locking hole 151, and the baffle 63 has an ear 631 corresponding to the locking hole 151. In the initial installation state, the ear 631 of the baffle 63 passes through the locking hole 151 of the locking plate 15 to facilitate locking and fixing. In this embodiment, a U-shaped fastener 152 can be directly inserted into the ear 631 to temporarily fix the baffle 63 to the locking plate 15. At this time, the movable ladder 60 is restrained by the baffle 63 and maintains the initial installation state, preventing it from falling out at will. In addition, the U-shaped fastener 152 in this embodiment can also be any type of latch, lock, etc., as long as it can achieve the function of latching the aforementioned ear 631. Its locking form will not be described in detail.

[0035] Furthermore, the escape device further includes multiple tripods 70, which are fixed to the bottom of the lower frame portions 12 and 22 of the first frame rail 10 and the second frame rail 20, so as to secure them to the wall on which the escape device 100 is installed (not shown in the figure). In this embodiment, two tripods 70 are shown as an example. Of course, depending on the assembly strength, three or four tripods can also be installed.

[0036] Furthermore, it further includes a descent device 400, which is a known safe descent structure (such as patents CN203355150U, CN206660333U, CN202161707U, etc.). The descent device 400 has a hanging part 410 for hanging on one of the frames 30. In this embodiment, preferably, the descent device 400 is hung on one of the frames 30 at the bottom of the aforementioned upper frame parts 11 and 21. Figure 2In this way, in addition to being convenient for users standing on the footplate 50 to access, its hanging position is quite obvious, which can also remind family members that this is a safety escape device and that other items should not be hung here indiscriminately, so as not to affect escape or rescue in case of an emergency.

[0037] Therefore, in the escape device 100 of the present invention, the first frame rail 10 and the second frame rail 20 can be set according to the width (i.e., the upper frame portion 11, 21 and the lower frame portion 12, 22) and height (side frame portion 13, 23, 14, 24) of the floor of the residence. In this way, the total length of the movable ladder 60 of the escape device 100 can reach about 1200 to 1400 centimeters, so as to meet the needs of installation and use on the second to fourth floors of the building, and ensure that the movable ladder 60 can descend to the ground to achieve the purpose of safe escape.

[0038] Furthermore, as long as multiple window strips 25 are provided on the upper frame portion 21, lower frame portion 22, or side frame portions 23, 24 of the second frame rail 20, such as Figure 6 As shown, the escape device 100 can be further equipped with the function of iron window anti-theft, achieving multiple benefits and being easy to install.

[0039] like Figure 2 , Figure 3 As shown, in use, since the large frame space 103 of the first frame rail 10 corresponds to the window of the home (not shown in the figure), the interior of the home can directly access the large frame space 103 through the window. During the escape process, from indoors to the escape device 100, the escapee steps out of the window and stands on the step 50. Then, by pulling the buckle 152 outward from the ear 631, the escape device 100 immediately unlocks. Since the step 50 is adjacent to the side frames 13 and 23, the escapee grabs the aforementioned step bar 61 within the range of the side frames 13 and 23 and pulls downward forcefully. Because the movable ladder 60 is made of stainless steel or aluminum, it is lightweight and not heavy. Therefore, the front end of the movable ladder 60 can automatically descend through the channel 102 between the fixed step 40 and the tripod 70. If the escapee has less strength (e.g., a woman, an elderly person, or a child), they can simply pull downwards step by step along each step bar 61. Figure 2As shown by the dashed arrow, the baffle 63, originally located within the range of the lower frame portions 12 and 22, will move from one side of the lower frame portions 12 and 22, first passing through the first frame 30, then to the other side of the lower frame portions 12 and 22, then through the second frame rail 20, and then move outward along the side frames 14 and 24, entering one side of the upper frame portions 11 and 21, passing through the third frame 30, then to the other side of the upper frame portions 11 and 21, and finally fall vertically along the side frames 13 and 23, landing on the top step 41 of the fixed step 40 and the top rod 71 of the tripod 70, thus positioning the end of the movable ladder 60 (as shown). Figure 3 (State). At this time, the front end of the movable ladder 60 has completely dropped to the ground. The person who was originally standing on the step 50 can pass through the track space 101 between the two side frames 13 and 23 and cross over to the fixed step 40. Finally, by climbing down the ladder step 40 and the movable ladder 60, they can escape safely and quickly.

[0040] Secondly, to ensure the safety of escape, the escapee standing on the step 60 can also remove the descent device 400, which is within reach, and further bind it to the body. This can prevent the escapee from falling due to tension or carelessness during the climbing process, thus obtaining double safety protection for escape.

[0041] It is worth mentioning that after the escape device 100 is used, since the movable ladder 60 has fallen to the ground, the operator only needs to grasp the baffle 63 and pull it upwards along the track space 101, allowing the movable ladder 60 to sequentially move along the aforementioned side frames 13, 23, the aforementioned upper frame 11, 21, the aforementioned side frames 14, 24, and the aforementioned lower frame 12, 22 to pull it back to its original position, allowing the baffle 63 to approach the locking plate 15 again, and then re-fastening the buckle 152 onto the locking lug 631. Figure 1 As shown, it returns to its original position for reuse.

[0042] like〔 Figure 7 ], [ Figure 8 As shown in the figure, the second preferred embodiment of the escape device 200 of the present invention includes a first frame rail 10, a second frame rail 20, a plurality of frames 30, a fixed step 40, a step 50, a movable ladder 60, a locking plate 15, a plurality of tripods 70, an arched ladder 80, a hook chain 90, and a descent device 400.

[0043] In this second embodiment, the structure and usage of the first frame rail 10, the second frame rail 20, the aforementioned frame 30, the fixed step 40, the tread 50, the movable step 60, the locking plate 15, and the aforementioned tripod 70 are the same as in the first embodiment, and will not be described again.

[0044] Regarding the features of the second embodiment, the arched ladder 80 is placed below the lower frame portions 12 and 22, and the hook chain 90 is connected to the end of the arched ladder 80. The arched ladder 80 has two arc-shaped rods 81 and multiple step rods 82 connected between the two arc-shaped rods 81. The front end of the arc-shaped rods 81 of the arched ladder 80 is pivotally connected to the two connecting rods 62 at the front end of the movable ladder 60, and its end is hooked to any step rod 61 of the movable ladder 60 by the hook chain 90, so that the arched ladder 80 can be stably placed below the first frame rail 10 and the second frame rail 20.

[0045] In the second embodiment, when a person stands on the step 50, the hook chain 90 is first disengaged from the step bar 61, allowing the arched ladder 80 to hang downwards from the bottom of the lower frame 12, 22 (as shown in the image). Figure 7 (As shown by the imaginary arrow), then, as in the first embodiment described above, the following steps are performed in sequence: unlock the locking plate 15 and the baffle 63 (remove the buckle 152), forcefully pull down the movable ladder 60, cross the track space 101, and climb down the movable ladder 60 from the fixed ladder 40 to the ground to escape safely. Additionally, when the arched ladder 80 has descended to the ground, as... Figure 8 Alternatively, the hook chain 90 can be hooked onto a drain cover 500 or other relatively stable location on the building to ensure that the arched ladder 80 does not sway.

[0046] like〔 Figure 9 As shown in the figure, a third preferred embodiment of the escape device 300 of the present invention includes a first frame rail 10, a second frame rail 20, a plurality of frames 30, a fixed step 40, a step 50, a movable ladder 60, a locking plate 15, a plurality of tripods 70, a descent device 400, and a plurality of outer frame members 16.

[0047] The third preferred embodiment is characterized by disclosing a combined escape device 300. The first frame rail 10 is composed of four L-shaped rails 110 joined together to form a rectangle, and the second frame rail 20 is also composed of four L-shaped rails 210 forming a rectangle. The aforementioned outer frame 16 covers the joints of each of the rails 110 and 210, and is locked together with the outer frame 16 and the rails 110 and 210 by a plurality of locking members 17. In this embodiment, the aforementioned outer frame 16 is inverted U-shaped and has a plurality of through holes 161. The rails 110 and 210 of the first frame rail 10 and the second frame rail 20 are each provided with a locking hole 120 and 220 corresponding to the aforementioned through holes 161 of the outer frame 16. The third embodiment utilizes the combination of the aforementioned multi-segment rails 110 and 210 with the aforementioned outer frame 16. In addition to achieving the same functionality as the first embodiment, it also facilitates handling and modular manufacturing, thereby reducing manufacturing and installation costs.

[0048] In summary, the escape device of the present invention, since the dimensions of the first and second frame rails 10 and 20 can be correspondingly set according to the width of the floor, and the movable ladder 60 is set around the first and second frame rails 10 and 20, so that the total length of the movable ladder 60 is equal to the total length of the outer frame of the first and second frame rails 10 and 20, can effectively increase the total length of the movable ladder 60 of the escape device 100. When the movable ladder 60 is fully pulled down (e.g. Figure 3 , Figure 9 As shown), the escape device 100 can be used on the second to fourth floors of a building, suitable for general residential floors. Furthermore, for higher floors, an arched staircase 80 can be added to further extend the total length of the movable staircase 60, allowing it to be used on the fifth floor of a residential building (see reference). Figure 8 (As shown).

[0049] In addition, for ease of assembly and transportation, it can be Figure 1 The first and second frame rails 10 and 20 are cut off to form four L-shaped rail structures 110 and 210, which can also form a rectangular frame and are set according to the width of the floor, such as... Figure 9 As shown, the use of modular frames makes handling and assembly more convenient and cost-effective.

[0050] It is worth mentioning that a guide wheel 64 is respectively provided in the middle of the aforementioned connecting rod 62 of the first frame rail 10 and the second frame rail 20, such as Figure 4 As shown, this is to help the movable ladder 60 to move smoothly when it is pulled, so as not to cause jamming.

[0051] The embodiments described above are merely preferred embodiments provided to fully illustrate the present invention, and the scope of protection of the present invention is not limited thereto. Equivalent substitutions or modifications made by those skilled in the art based on the present invention, or reasonable combinations of features and solutions from various embodiments, are all within the scope of protection of the present invention.

Claims

1. An escape device, characterized in that, Includes: A first frame rail and a second frame rail are both rectangular, and are parallel and spaced apart to each other, defining an open track space. The first frame rail and the second frame rail each have an upper frame portion, a lower frame portion, and two side frame portions. Multiple frames, generally in the shape of an inverted U, each frame is respectively bridged in the middle of an inner side of the first frame rail and the second frame rail, and the aforementioned frame has an open space connected to the track space; A fixed step is connected to the bottom of one of the side frames of the first frame rail and the second frame rail; A treadmill is erected on the lower frame of the first frame rail and the second frame rail, and is erected on at least one of the frames of the lower frame of the first frame rail and the second frame rail; A movable ladder is capable of bending at an angle and has multiple step bars, multiple connecting rods pivotally connected to both ends of each step bar, and a baffle parallel to the aforementioned step bars and connected between the two connecting rods at the very end. The movable ladder is slidably engaged with the aforementioned connecting rods on both sides in the first frame rail and the second frame rail, thereby enabling the movable ladder to move within the track space.

2. The escape device as described in claim 1, characterized in that, The height of the baffle is lower than the bottom of the top plate of the aforementioned frame, so that when the baffle moves with the movable ladder, it can pass through the open space of the aforementioned frame and move back and forth in the track space.

3. The escape device as described in claim 1, characterized in that, The device further includes a locking plate disposed on the lower frame portion of the first frame rail and the second frame rail, and adjacent to one side of the fixed step. The locking plate has a locking hole, and the baffle has an ear corresponding to the locking hole, so that the ear of the baffle can pass through the locking hole of the locking plate to facilitate locking and fixing.

4. The escape device as described in claim 1, characterized in that, It further includes a descent device having a hanging part for suspension on one of the frames.

5. The escape device as described in claim 1, characterized in that, It further includes multiple tripods, which are fixed to the bottom of the lower frame of the first frame rail and the second frame rail to facilitate locking to a wall.

6. The escape device as described in claim 1, characterized in that, The device further includes an arched ladder and a hook chain connected to the end of the arched ladder. The arched ladder has two arc-shaped rods and multiple step rods connected between the two arc-shaped rods. The front end of the arched ladder is pivotally connected to the two connecting rods at the front end of the movable ladder, and its end is hooked to the movable ladder by the hook chain, so that the arched ladder is placed below the first frame rail and the second frame rail.

7. The escape device as described in claim 1, characterized in that, The pedal rests on two frames at the bottom of the first and second frame rails.

8. The escape device as described in claim 1, characterized in that, The fixed staircase has at least two steps, with the uppermost step located on the bottom side of one of the side frames of the first and second frame rails.

9. The escape device as described in claim 1, characterized in that, It further includes multiple outer frame members. The first frame rail is composed of four L-shaped rails joined together to form a rectangle. The second frame rail is also composed of four L-shaped rails joined together to form a rectangle. The aforementioned outer frame members respectively cover the joints of the rails, so as to lock the outer frame members and the aforementioned rails together using multiple locking members.

10. The escape device as claimed in claim 1, characterized in that, It further includes multiple window strips, which are respectively installed on the outside of the second frame rail.

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