A concealed escape window and its usage method

Abstract

This invention discloses a concealed escape window and its usage method, including an escape basket, a receiving cavity, and a window. The escape basket includes a folded form for storage within the receiving cavity and an unfolded form for escape. The escape basket has a first frame and a second frame, and also includes a suspension line for suspending the escape basket; a swing arm mechanism rotatably disposed at the upper end of the receiving cavity for auxiliary support of the suspension line; a storage mechanism disposed within the first frame for storing the suspension line; a line-releasing mechanism disposed on the first frame for releasing the suspension line; and a balancing support mechanism disposed on the suspension line for smooth descent of the escape basket. This design, using the swing arm mechanism to support the suspension line when the escape basket is in the unfolded state, improves its safety performance. Furthermore, the suspension line is only located on one side of the first frame, simplifying the structure, and the balancing support assembly ensures a smooth descent of the escape basket.

Description

Technical Field

[0001] This invention relates to the technical field of escape devices, and more particularly to a concealed escape window and its method of use. Background Technology

[0002] In modern buildings, especially high-rise buildings, the safe evacuation and escape of personnel are crucial issues in emergencies such as fires. Existing escape equipment has some shortcomings. For example, some escape devices are bulky, affecting the aesthetics of the building after installation; others lack stability and safety during use, failing to ensure the safety of personnel during escape. For instance, patent application CN222218448U discloses a glass railing-concealed escape device. While the escape basket can be hidden under a window, its descent mechanism is complex. It typically requires connecting suspension lines to the front and rear frames of the escape basket to achieve descent, and the support arms cannot adequately support the suspension lines, posing a certain safety hazard. Summary of the Invention

[0003] Therefore, the purpose of this invention is to provide a concealed escape window with a simple structure, which enables the escape basket to descend smoothly and has high safety, and a method for using it.

[0004] The technical solution adopted by this invention to solve its technical problem is as follows:

[0005] A concealed escape window includes an escape basket, a receiving cavity mounted on a wall for storing the escape basket, and a window mounted on the wall for sealing the receiving cavity. The escape basket includes a folded form for storage within the receiving cavity and an unfolded form for escape. The escape basket includes a first frame on the front side and a second frame on the rear side, and further includes:

[0006] Suspension line: installed inside the receiving cavity and used to suspend the escape basket;

[0007] Swing arm mechanism: Rotatably mounted on the upper end of the receiving cavity and used to provide auxiliary support for the suspension line;

[0008] A storage mechanism is provided within the first frame and is used to store the suspension wire.

[0009] Line-laying mechanism: installed on the first frame and capable of laying out the suspension line to lower the escape basket;

[0010] Balance support mechanism: installed on the suspension line to allow the escape basket to descend smoothly.

[0011] In a preferred embodiment of the present invention, the swing arm mechanism includes a fixed shaft inclinedly disposed within the receiving cavity and a swing rod rotatably disposed within the fixed shaft. When the escape basket is in a folded state, the swing rod is housed within the receiving cavity and is in a horizontal state. When the escape basket is in an unfolded state, the swing rod extends out of the receiving cavity and is inclined downward. The swing rod is hollow, and the suspension cable passes through the swing rod and is fixed within the receiving cavity. A support shaft is provided inside the swing rod and at the extended end to support the suspension cable.

[0012] In a preferred embodiment of the present invention, the receiving cavity is provided with a pop-out mechanism that can push the swing arm out of the receiving cavity. The pop-out mechanism includes a push plate disposed in the receiving cavity and movable back and forth to push the swing arm out of the receiving cavity, a spring disposed on the rear side of the push plate and driving the push plate to move, a fixing seat disposed on the inner wall of the receiving cavity and used to assemble the spring, and a trigger structure disposed in the spring and able to keep the spring in a compressed state.

[0013] In a preferred embodiment of the present invention, the triggering structure includes a first buckle disposed on the fixed base, a second buckle disposed on the push plate and capable of engaging with the first buckle, and a pull cord disposed at the bottom of the second buckle. One end of the first buckle is provided with a first inclined surface, and one end of the second buckle is provided with a second inclined surface. The engaging end of the second buckle extends upward, and the engaging end of the first buckle extends downward. The second buckle is made of a material with elasticity and resilience. The window includes a telescopic frame disposed on the wall and a glass plate disposed on the telescopic frame. The receiving cavity is provided with a through hole through which the pull cord can pass, and the extended end of the pull cord passes through the through hole and is connected to the telescopic frame.

[0014] In a preferred embodiment of the present invention, the escape basket includes a plurality of folding vertical bars disposed on and connecting the first frame and the second frame, and a plurality of horizontal bars disposed on and movable up and down within the first frame and the second frame. The balancing support mechanism includes a support member disposed above the first frame, a first traction line disposed on the support member with one end disposed on the first frame, a second traction line disposed on the support member with one end disposed on the second frame, and a third traction line disposed on the support member with one end disposed on the folding vertical bars. The suspension line is wound around the support member at least once.

[0015] In a preferred embodiment of the present invention, the balancing support mechanism includes a lifting assembly capable of pulling the crossbar upward. The first frame has a first guide groove for the crossbar to move vertically, and the second frame has a second guide groove for the crossbar to move vertically. The crossbar includes a first crossbar disposed on the first frame and a second crossbar disposed on the second frame. Both ends of the first crossbar have first plugs that can be inserted into the first guide groove, and both ends of the second crossbar have second plugs that can be inserted into the second guide groove. The first frame has a connection to the first guide groove. The first lead wire hole is provided on the second frame, which communicates with the second guide groove. The lifting assembly includes a fourth traction wire connected to the first traction wire and extending into the first guide groove through the first lead wire hole, and a fifth traction wire connected to the second traction wire and extending into the second guide groove through the second lead wire hole. The first plugs at both ends of the first crossbar are fixed to the fourth traction wire, and there is a certain distance between two adjacent first crossbars. The second plugs at both ends of the second crossbar are fixed to the fifth traction wire, and there is a certain distance between two adjacent second crossbars.

[0016] In a preferred embodiment of the present invention, the folding rod includes a first folding rod disposed on the first frame, a second folding rod disposed on the second frame and hinged to the first folding rod, and a hinge shaft that hinges the first folding rod and the second folding rod. The third traction line is connected to the hinge shaft of the uppermost folding rod. A sixth traction line is provided on the hinge shafts of adjacent connecting folding rods to connect the two rods. A seventh traction line is provided on the first frame and above the first folding rod, connected to the hinge shaft. An eighth traction line is provided on the second frame and above the second folding rod, connected to the hinge shaft.

[0017] In a preferred embodiment of the present invention, the suspension line includes a first suspension line disposed on the left side of the first frame and a second suspension line disposed on the left side of the second frame. The storage mechanism includes a first storage cavity disposed on the left side of the first frame, a first winding shaft disposed in the first storage cavity, a second storage cavity disposed on the right side of the first frame, a second winding shaft disposed in the second storage cavity, and a coupling disposed between the first winding shaft and the second winding shaft and drivingly connecting the two. The first frame is provided with a first wire hole communicating with the first storage cavity, and the first frame is provided with a second wire hole communicating with the second storage cavity. The first winding shaft is provided with a first threaded groove for winding the first suspension line, and the second winding shaft is provided with a second threaded groove for winding the second suspension line. The rotation direction of the first threaded groove is opposite to the rotation direction of the second threaded groove.

[0018] In a preferred embodiment of the present invention, the wire feeding mechanism includes a housing disposed on the first frame and located at the coupling, a manual wire feeding structure disposed on the housing for synchronously feeding the first suspension wire and the second suspension wire, and a damper disposed at the ends of the first suspension wire and the second suspension wire for limiting their wire feeding speed. The manual wire feeding structure includes a first limiting block disposed on the coupling, a threaded shaft disposed in the housing, a rotating handle disposed on the housing and driving the threaded shaft to rotate, and a second limiting block disposed on the threaded shaft and reciprocating along the axial direction of the threaded shaft to engage with the first limiting block.

[0019] This invention also discloses a method for using an escape window, employing the concealed escape window described above. The method of use is as follows: Under normal circumstances, the escape basket is folded and stored in the receiving cavity, which is sealed by the window. When the escape basket needs to be used for escape, the window is opened, and the telescopic frame on the window will pull the pull rope to trigger the mechanism to unlock, causing the push plate on the pop-out mechanism to push the swing arm out of the receiving cavity, thereby also pushing out the escape basket. After the escape basket is pushed out, the folding vertical bar will automatically unfold, and the support member of the balance support mechanism will be pulled upward by the suspension line, driving the first, second, and third traction lines to pull up. Furthermore, the first and second traction lines will drive the fourth and fifth traction lines to pull up, causing the crossbar to be pulled to the corresponding position. At this time, the escape basket is in the unfolded state. Then, by rotating the rotating handle on the line-laying mechanism, the first and second suspension lines on the left and right sides are controlled to release the lines synchronously, and the escape basket can descend smoothly under the action of the damper and the balance support mechanism.

[0020] The beneficial effects of this invention are as follows: The concealed escape window includes an escape basket, a receiving cavity, and a window body. The escape basket includes a folded form for storage within the receiving cavity and an unfolded form for escape. The escape basket has a first frame and a second frame, and also includes a suspension line for suspending the escape basket; a swing arm mechanism rotatably mounted on the upper end of the receiving cavity for auxiliary support of the suspension line; a storage mechanism mounted in the first frame for storing the suspension line; a line-releasing mechanism mounted on the first frame for releasing the suspension line; and a balance support mechanism mounted on the suspension line for smoothly lowering the escape basket. In this way, the swing arm mechanism supports the suspension line when the escape basket is in the unfolded state, ensuring that the escape basket can be lowered by releasing the line. Furthermore, the swing arm mechanism can also detach the escape basket from the receiving cavity during its swing, facilitating its ejection. The escape basket is stored within the receiving cavity, making the overall window body look simpler and more aesthetically pleasing, without affecting the building's appearance. Furthermore, the suspension line is only set on one side of the first frame, making the structure simpler. With the provided balance support components, the escape basket will not overturn during descent due to the force being concentrated on one side of the first frame. This ensures the safety of the escape basket during descent and allows it to descend smoothly. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the present invention;

[0022] Figure 2 This is an exploded view of the swing arm mechanism in this invention;

[0023] Figure 3 This is a cross-sectional view of the swing arm mechanism in this invention;

[0024] Figure 4 This is a cross-sectional view of the pop-out mechanism in this invention;

[0025] Figure 5 This is a schematic diagram of the escape basket in this invention;

[0026] Figure 6 This is a cross-sectional view of the escape basket in this invention;

[0027] Figure 7 This is a partial schematic diagram of the balancing support mechanism in this invention;

[0028] Figure 8 This is a cross-sectional view of the present invention located inside the upper part of the first frame;

[0029] Figure 9 This is a partial schematic diagram of the storage mechanism in this invention;

[0030] Figure 10 This is a cross-sectional view of the present invention located at the wire feeding mechanism. Detailed Implementation

[0031] The technical solutions in the embodiments of the present invention will now be clearly and completely described in conjunction with the accompanying drawings.

[0032] Reference Figures 1 to 10 A concealed escape window includes an escape basket 1, a receiving cavity 2 mounted on a wall for storing the escape basket 1, and a window 3 mounted on a wall for sealing the receiving cavity 2. The escape basket 1 includes a folded form for storage within the receiving cavity 2 and an unfolded form for escape. The escape basket 1 includes a first frame 11 on the front side and a second frame 12 on the rear side, and also includes:

[0033] Suspension line 4: installed inside the receiving cavity 2 and used to suspend the escape basket 1;

[0034] Swing arm mechanism 5: Rotatably mounted on the upper end of the receiving cavity 2 and used to provide auxiliary support for the suspension line 4;

[0035] Storage mechanism 6; set inside the first frame 11 and used to store the hanging wire 4;

[0036] Line-laying mechanism 7: installed on the first frame 11 and capable of laying out the suspension line 4 to lower the escape basket 1;

[0037] Balance support mechanism 8: It is installed on the suspension line 4 and can make the escape basket 1 descend smoothly.

[0038] The swing arm mechanism 5 supports the suspension line 4 when the escape basket 1 is in the unfolded state, ensuring that the escape basket 1 can be lowered. During the swinging motion of the swing arm mechanism 5, the escape basket 1 can also be disengaged from the receiving cavity 2, facilitating its ejection. The escape basket 1 is then stored within the receiving cavity 2, making the overall appearance of the window 3 more minimalist and aesthetically pleasing, without affecting the building's exterior. Furthermore, the suspension line 4 is only located on one side of the first frame 11, simplifying the structure. The included balance support components prevent the escape basket 1 from overturning during descent due to concentrated force on one side of the first frame 11, thus ensuring the safety of the escape basket 1 during its descent and allowing it to descend smoothly.

[0039] In this design, the swing arm mechanism 5 includes a fixed shaft 51 inclined within the receiving cavity 2 and a swing rod 52 rotatably disposed within the fixed shaft 51. When the escape basket 1 is in a folded state, the swing rod 52 is retracted into the receiving cavity 2 and is in a horizontal state. When the escape basket 1 is in an unfolded state, the swing rod 52 extends out of the receiving cavity 2 and is inclined downwards. The swing rod 52 is hollow, and the suspension line 4 passes through the entire swing rod 52 and is fixed within the receiving cavity 2. A support shaft 53 is provided inside the swing rod 52 at its extended end to support the suspension line 4. Furthermore, a first ring is provided on the outside of the swing rod 52 at its extended end, and a second ring is provided inside the receiving cavity 2 in front of the fixed shaft 51. A support line is provided between the first ring and the second ring to connect the two, thereby supporting the swing rod 52 and preventing it from being bent. In this way, after window 3 is opened, the swing arm 52 will rotate and unfold on its own due to its own weight. After unfolding, the swing arm 52 will not swing due to its weight, thus ensuring the stability of the escape basket 1 during its descent.

[0040] In this design, the receiving cavity 2 is provided with an ejection mechanism that can push the swing arm 52 out of the receiving cavity 2. The ejection mechanism includes a push plate 91 disposed in the receiving cavity 2 and movable back and forth to push the swing arm 52 out of the receiving cavity 2, a spring 92 disposed on the rear side of the push plate 91 and driving the push plate 91 to move, a fixing seat 93 disposed on the inner wall of the receiving cavity 2 and used to assemble the spring 92, and a trigger structure 94 disposed in the spring 92 and able to keep the spring 92 in a compressed state. The side of the push plate 91 that cooperates with the swing arm 52 is a C-shaped groove. Specifically, the triggering structure 94 includes a first buckle 941 disposed on the fixed base 93, a second buckle 942 disposed on the push plate 91 and capable of engaging with the first buckle 941, and a pull rope 943 disposed at the bottom of the second buckle 942. One end of the first buckle 941 is provided with a first inclined surface, and one end of the second buckle 942 is provided with a second inclined surface. The engaging end of the second buckle 942 extends upward, and the engaging end of the first buckle 941 extends downward. The second buckle 942 is made of a material with elasticity and resilience. The window 3 includes a telescopic frame 31 disposed on the wall and a glass plate 32 disposed on the telescopic frame 31. The receiving cavity 2 is provided with a through hole (not shown in the figure) through which the pull rope 943 can pass. The extended end of the pull rope 943 passes through the through hole and is connected to the telescopic frame 31. When window 3 is opened, the pull rope 943 will be pulled, thereby unlocking the trigger structure 94. Then, the push plate 91 will push the swing arm 52 out of the containment cavity 2, thereby accelerating the speed at which the swing arm 52 swings outward, ensuring enough time for escape.

[0041] In this design, the escape basket 1 includes several folding vertical bars 13 connected to the first frame 11 and the second frame 12, and several horizontal bars 14 that are movable up and down within the first frame 11 and the second frame 12. The balance support mechanism 8 includes a support member 81 located above the first frame 11, a first traction line 82 located on the support member 81 with one end attached to the first frame 11, a second traction line 83 located on the support member 81 with one end attached to the second frame 12, and a third traction line 84 located on the support member 81 with one end attached to the folding vertical bars 13. The suspension line 4 is wound around the support member 81 at least once. Specifically, the support member 81 includes a support block and a pulley located at the upper end of the support block. The first traction line 82, the second traction line 83, and the third traction line 84 are all located at the lower end of the support block, and the suspension line 4 is wound around the pulley at least once. In this way, the first traction line 82 and the second traction line 83 balance the force received by the escape basket 1 in the horizontal direction, preventing the escape basket 1 from overturning. At the same time, the third traction line 84 restricts the height position of the support member 81, so that the first traction line 82 and the second traction line 83 are both in a straight state, avoiding uneven force on one side. It also facilitates the release of the hanging line 4 without causing jamming.

[0042] In this solution, the balance support mechanism 8 includes a lifting assembly 85 that can pull the crossbar 14 upward. The first frame 11 is provided with a first guide groove 111 for the crossbar 14 to move up and down, and the second frame 12 is provided with a second guide groove 121 for the crossbar 14 to move up and down. The crossbar 14 includes a first crossbar 141 disposed on the first frame 11 and a second crossbar 142 disposed on the second frame 12. The left and right ends of the first crossbar 141 are provided with a first plug 1411 that can be inserted into the first guide groove 111, and the left and right ends of the second crossbar 142 are provided with a second plug 1421 that can be inserted into the second guide groove 121. The first plug 1411 and the second plug 1421 are T-shaped and are respectively engaged in the first guide groove 111 and the second guide groove 121 for up and down movement. The first frame 11 is provided with a first lead wire hole 112 communicating with the first guide groove 111, and the second frame 12 is provided with a second lead wire hole 122 communicating with the second guide groove 121. The lifting assembly 85 includes a fourth traction wire 851 connected to the first traction wire 82 and extending into the first guide groove 111 through the first lead wire hole 112, and a fifth traction wire 852 connected to the second traction wire 83 and extending into the second guide groove 121 through the second lead wire hole 122. The first plugs 1411 at both ends of the first crossbar 141 are fixed to the fourth traction wire. On 851, and with a certain distance between the two adjacent first crossbars 141, the second plugs 1421 at both ends of the second crossbar 142 are fixed to the fifth traction line 852, and with a certain distance between the two adjacent second crossbars 142, so that after the escape basket 1 is pushed out, the support member 81 will be pulled upward to the corresponding position. Depending on the length of the third traction line 84, the first traction line 82 and the second traction line 83 will be pulled upward, and then the fourth traction line 851 and the fifth traction line 852 will be pulled upward, thereby pulling the crossbar 14 upward to the corresponding position.

[0043] In this design, the folding rod 13 includes a first folding rod 131 mounted on the first frame 11, a second folding rod 132 mounted on the second frame 12 and hinged to the first folding rod 131, and a hinge shaft 133 that hinges the first folding rod 131 and the second folding rod 132. The third traction line 84 is connected to the hinge shaft 133 of the uppermost folding rod 13. A sixth traction line 134 is provided on each hinge shaft 133 between adjacent folding rods 13 to connect the two. A seventh traction line 135 is provided on the first frame 11 above the first folding rod 131 and connected to the hinge shaft 133. An eighth traction line 136 is provided on the second frame 12 above the second folding rod 132 and connected to the hinge shaft 133, so that each folding rod 13 can be folded upward or unfolded downward simultaneously.

[0044] In this design, a first limiting plate is provided on the first frame 11 and below the first folding vertical bar 131 to limit the downward swing position of the first folding vertical bar 131, and a second limiting plate is provided on the second frame 12 and below the second folding vertical bar 132 to limit the downward swing position of the second folding vertical bar 132, so that the first folding vertical bar 131 and the second folding vertical bar 132 are in a horizontal state after being unfolded, which better supports the escape basket 1.

[0045] In this design, the bottom of the first frame 11 is provided with a first storage slot, the bottom of the second frame 12 is provided with a second storage slot, and the bottom of the escape basket 1 is provided with a rollable support net assembly. The support net assembly includes a first support column disposed in the first storage slot, a second support column disposed in the second storage slot, and a support net disposed between the first and second support columns and capable of being rolled up on the first and second support columns. Thus, during the unfolding of the escape basket 1, the support net at the bottom is also pulled open, thereby supporting personnel entering the escape basket 1.

[0046] In this design, the suspension line 4 includes a first suspension line 41 disposed on the left side of the first frame 11 and a second suspension line 42 disposed on the left side of the second frame 12. The storage mechanism 6 includes a first storage cavity 61 disposed on the left side of the first frame 11, a first winding shaft 62 disposed within the first storage cavity 61, a second storage cavity 63 disposed on the right side of the first frame 11, a second winding shaft 64 disposed within the second storage cavity 63, and a mechanism between the first winding shaft 62 and the second winding shaft 64 that holds the two winding shafts together. The coupling 65 connects the two wires for transmission. The first frame 11 has a first wire hole 113 communicating with the first storage cavity 61, and the first frame 11 has a second wire hole 114 communicating with the second storage cavity 63. The first winding shaft 62 has a first threaded groove 621 for winding the first suspension wire 41, and the second winding shaft 64 has a second threaded groove 641 for winding the second suspension wire 42. The rotation direction of the first threaded groove 621 is opposite to that of the second threaded groove 641. This allows for the smooth unwinding of the first suspension wire 41 and the second suspension wire 42 without jamming.

[0047] In this design, the wire feeding mechanism 7 includes a housing 71 mounted on the first frame 11 and located at the coupling 65; a manual wire feeding structure 72 mounted on the housing 71 for synchronously feeding the first suspension wire 41 and the second suspension wire 42; and a damper 73 mounted at the ends of the first suspension wire 41 and the second suspension wire 42 to limit their feeding speed. The manual wire feeding structure 72 includes a first limiting block 721 mounted on the coupling 65; a threaded shaft 722 mounted inside the housing 71; a rotating handle 723 mounted on the housing 71 and driving the threaded shaft 722 to rotate; and a second limiting block 724 mounted on the threaded shaft 722 and capable of reciprocating along the axial direction of the threaded shaft 722 to engage with the first limiting block 721. Furthermore, the first limiting block 721 is teardrop-shaped, and the second limiting block 724 includes a recessed portion that abuts against the protruding portion of the first limiting block 721. This manual control of the first and second suspension lines 41 and 42 ensures a smooth descent of the escape basket 1, making the operation simple and convenient, avoiding the use of electrical control components, and thus enhancing safety and reliability. Furthermore, the inclusion of a damper 73 prevents the escape basket 1 from descending too quickly, further improving safety performance.

[0048] This invention also discloses a method for using an escape window, employing the concealed escape window described above. The method is as follows: Under normal circumstances, the escape basket 1 is folded and stored within the receiving cavity 2, covered by the window 3, without affecting the building's appearance. In an emergency, the window 3 is opened, and the telescopic bracket 31 on the window 3 pulls the pull rope 943 to trigger the mechanism 94, causing the push plate 91 on the ejection mechanism to push the swing arm 52 out of the receiving cavity 2. After the escape basket 1 is pushed out, the folding vertical bar 13 unfolds, and the support member 81 of the balance support mechanism 8 is pulled upwards by the suspension line 4, causing the first traction line 82, the second traction line 83, and the third traction line 84 to pull upwards. Furthermore, the first traction line 82 and the second traction line 83 will cause the fourth traction line 851 and the fifth traction line 852 to pull upwards, causing the horizontal bar 14 to rise to the corresponding position. At this time, the escape basket 1 unfolds, allowing the user to enter and escape. Then, by rotating the handle 723 on the wire-laying mechanism 7, the first suspension line 41 and the second suspension line 42 on the left and right sides are controlled to be laid out synchronously. The escape basket 1 can be smoothly lowered by the damper 73 and the balance support mechanism 8, so that the people in the escape basket 1 can quickly escape from the floor or ground where the fire has not yet occurred.

[0049] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A concealed escape window, comprising an escape basket (1), a receiving cavity (2) disposed on a wall and capable of storing the escape basket (1), and a window (3) disposed on a wall and capable of sealing the receiving cavity (2), wherein the escape basket (1) includes a folded form for storage within the receiving cavity (2) and an unfolded form for escape, and the escape basket (1) includes a first frame (11) disposed on the front side and a second frame (12) disposed on the rear side, characterized in that, It also includes: Suspension line (4): installed inside the receiving cavity (2) and used to suspend the escape basket (1); Swing arm mechanism (5): Rotatably mounted on the upper end of the receiving cavity (2) and used to provide auxiliary support for the suspension line (4); Storage mechanism (6); disposed within the first frame (11) and used to store the hanging wire (4); Line-laying mechanism (7): Set on the first frame (11) and capable of laying out the suspension line (4) to lower the escape basket (1); Balance support mechanism (8): set on the suspension line (4) and can make the escape basket (1) descend smoothly; The escape basket (1) includes several folding vertical bars (13) that are set in the first frame (11) and the second frame (12) and connect the two, and several horizontal bars (14) that are set in the first frame (11) and the second frame (12) and can move up and down. The balance support mechanism (8) includes a support member (81) set above the first frame (11), a first traction line (82) set on the support member (81) and the other end set on the first frame (11), a second traction line (83) set on the support member (81) and the other end set on the second frame (12), and a third traction line (84) set on the support member (81) and the other end set on the folding vertical bars (13). The suspension line (4) is wound around the support member (81) at least once. The balance support mechanism (8) includes a lifting assembly (85) that can pull the crossbar (14) upward. The first frame (11) is provided with a first guide groove (111) for the crossbar (14) to move up and down. The second frame (12) is provided with a second guide groove (121) for the crossbar (14) to move up and down. The crossbar (14) includes a first crossbar (141) disposed on the first frame (11) and a second crossbar (142) disposed on the second frame (12). The left and right ends of the first crossbar (141) are provided with a first plug (1411) that can be inserted into the first guide groove (111). The left and right ends of the second crossbar (142) are provided with a second plug (1421) that can be inserted into the second guide groove (121). The first frame (11) is provided with a first lead hole that communicates with the first guide groove (111). (112) The second frame (12) is provided with a second lead wire hole (122) communicating with the second guide groove (121). The lifting assembly (85) includes a fourth traction wire (851) connected to the first traction wire (82) and extending into the first guide groove (111) through the first lead wire hole (112), and a fifth traction wire (852) connected to the second traction wire (83) and extending into the second guide groove (121) through the second lead wire hole (122). The first plugs (1411) at both ends of the first crossbar (141) are fixed to the fourth traction wire (851), and there is a gap between two adjacent first crossbars (141). The second plugs (1421) at both ends of the second crossbar (142) are fixed to the fifth traction wire (852), and there is a gap between two adjacent second crossbars (142).

2. The concealed escape window according to claim 1, characterized in that, The swing arm mechanism (5) includes a fixed shaft (51) inclinedly disposed in the receiving cavity (2) and a swing rod (52) rotatably disposed in the fixed shaft (51). When the escape basket (1) is in the folded state, the swing rod (52) is stored in the receiving cavity (2) and is in a horizontal state. When the escape basket (1) is in the unfolded state, the swing rod (52) extends out of the receiving cavity (2) and is inclined downward. The swing rod (52) is in a hollow state. The suspension line (4) passes through the swing rod (52) and is fixed in the receiving cavity (2). The swing rod (52) has a support shaft (53) inside and at the extended end that can support the suspension line (4).

3. A concealed escape window according to claim 2, characterized in that, The receiving cavity (2) is provided with a pop-out mechanism (9) that can push the swing rod (52) out of the receiving cavity (2). The pop-out mechanism (9) includes a push plate (91) disposed in the receiving cavity (2) and movable back and forth to push the swing rod (52) out of the receiving cavity (2), a spring (92) disposed on the rear side of the push plate (91) and driving the push plate (91) to move, a fixing seat (93) disposed on the inner wall of the receiving cavity (2) and used to assemble the spring (92), and a trigger structure (94) disposed in the spring (92) and can keep the spring (92) in a compressed state.

4. A concealed escape window according to claim 3, characterized in that, The triggering structure (94) includes a first buckle (941) disposed on the fixed base (93), a second buckle (942) disposed on the push plate (91) and capable of engaging with the first buckle (941), and a pull rope (943) disposed at the bottom of the second buckle (942). One end of the first buckle (941) is provided with a first inclined surface, and one end of the second buckle (942) is provided with a second inclined surface. The engaging end of the second buckle (942) extends upward, and the engaging end of the first buckle (941) extends downward. The second buckle (942) is made of a material with elasticity and resilience. The window (3) includes a telescopic frame (31) disposed on the wall and a glass plate (32) disposed on the telescopic frame (31). The receiving cavity (2) is provided with a through hole through which the pull rope (943) can pass. The extended end of the pull rope (943) passes through the through hole and is connected to the telescopic frame (31).

5. A concealed escape window according to claim 1, characterized in that, The folding rod (13) includes a first folding rod (131) disposed on the first frame (11), a second folding rod (132) disposed on the second frame (12) and hinged to the first folding rod (131), and a hinge shaft (133) that hinges the first folding rod (131) and the second folding rod (132). The third traction line (84) is connected to the hinge shaft (133) of the uppermost folding rod (13). A sixth traction line (134) is provided on the hinge shaft (133) between adjacent connecting folding rods (13). A seventh traction line (135) is provided on the first frame (11) above the first folding rod (131) and connected to the hinge shaft (133). An eighth traction line (136) is provided on the second frame (12) above the second folding rod (132) and connected to the hinge shaft (133).

6. A concealed escape window according to claim 5, characterized in that, The suspension line (4) includes a first suspension line (41) disposed on the left side of the first frame (11) and a second suspension line (42) disposed on the left side of the second frame (12). The storage mechanism (6) includes a first storage cavity (61) disposed on the left side of the first frame (11), a first winding shaft (62) disposed in the first storage cavity (61), a second storage cavity (63) disposed on the right side of the first frame (11), a second winding shaft (64) disposed in the second storage cavity (63), and a shaft disposed between the first winding shaft (62) and the second winding shaft (64) to hold the two shafts together. The coupling (65) that connects the two parts for transmission has a first wire hole (113) on the first frame (11) that communicates with the first storage cavity (61), a second wire hole (114) on the first frame (11) that communicates with the second storage cavity (63), a first threaded groove (621) on the first winding shaft (62) for winding the first suspension wire (41), and a second threaded groove (641) on the second winding shaft (64) for winding the second suspension wire (42). The rotation direction of the first threaded groove (621) is opposite to that of the second threaded groove (641).

7. A concealed escape window according to claim 6, characterized in that, The wire feeding mechanism (7) includes a housing (71) disposed on the first frame (11) and located at the coupling (65), a manual wire feeding structure (72) disposed on the housing (71) for synchronously feeding the first suspension wire (41) and the second suspension wire (42), and a damper (73) disposed at the ends of the first suspension wire (41) and the second suspension wire (42) for limiting their wire feeding speed. The manual wire feeding structure (72) includes a first limiting block (721) disposed on the coupling (65), a threaded shaft (722) disposed in the housing (71), a rotating handle (723) disposed on the housing (71) and driving the threaded shaft (722) to rotate, and a second limiting block (724) disposed on the threaded shaft (722) and reciprocating along the axial direction of the threaded shaft (722) to engage with the first limiting block (721).

8. A method of using an escape window, characterized in that, The concealed escape window as described in claim 7 is used as follows: Normally, the escape basket (1) is folded and stored in the receiving cavity (2), and the receiving cavity (2) is sealed by the window (3); when the escape basket (1) needs to be used for escape, by opening the window (3), the telescopic frame (31) on the window (3) will pull the pull rope (943) to trigger the trigger structure (94) to unlock, causing the push plate (91) on the pop-out mechanism (9) to push the swing arm (52) out of the receiving cavity (2), thereby also pushing out the escape basket (1). After the escape basket (1) is pushed out, the folding vertical rod (13) will automatically unfold, and the balance support mechanism ( The support member (81) of 8) will be lifted upward by the suspension line (4), which will drive the first traction line (82), the second traction line (83) and the third traction line (84) to pull upward. The first traction line (82) and the second traction line (83) will drive the fourth traction line (851) and the fifth traction line (852) to pull upward, so that the crossbar (14) is pulled to the corresponding position. At this time, the escape basket (1) is in the unfolded state. Then, by rotating the rotating handle (723) on the line release mechanism (7), the first suspension line (41) and the second suspension line (42) on the left and right sides are controlled to release the line synchronously. The escape basket (1) can descend smoothly under the action of the damper (73) and the balance support mechanism (8).

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