Emergency door and throwing method thereof

Abstract

The invention provides an emergency door and a throwing method thereof, and belongs to the technical field of structural design, the emergency door comprises a door frame, an emergency door body, a throwing hinge, an inner handle safety mechanism, an inner handle, a handle rotating shaft, a bolt throwing mechanism, a pull rod mechanism, a swing pin throwing mechanism, an outer handle mechanism and an outer handle safety mechanism; wherein the top of the emergency door is provided with a throwing hinge, the bottom of the emergency door is provided with an inner handle safety mechanism, a handle rotating shaft, a plug pin throwing mechanism, a pull rod mechanism, a swing pin throwing mechanism and an outer handle safety mechanism, the inner handle and the outer handle mechanism are connected with the handle rotating shaft, and the handle rotating shaft is connected with the plug pin throwing mechanism. The plug pin throwing mechanism is connected with the swing pin throwing mechanism through the pull rod mechanism. The emergency door is fixed to the door frame through the throwing hinge, the plug pin throwing mechanism and the swing pin throwing mechanism. A normal cabin door compression rubber strip sealing mode is adopted, the throwing mechanism is arranged on the emergency door, the emergency door can be thrown or taken down by operating the throwing mechanism, and emergency throwing and regular maintenance and disassembly are facilitated.

Description

Technical Field

[0001] The present invention belongs to the technical field of structural design, and particularly relates to an emergency door and a throwing method thereof. Background Art

[0002] Helicopters provide emergency evacuation channels for pilots and need to arrange emergency exits on both sides of the cockpit. The conventional method is to arrange throw-out side window glass or throw-out cockpit doors. The method of throwing out side window glass is difficult in throwing out and installing due to the large size of the glass, and it is inconvenient to use and regularly disassemble and maintain; while the weight of the throw-out cockpit door is heavy, and large transport helicopters can enter the cockpit from the cabin, so the cockpit door is not used daily, resulting in a waste of weight.

[0003] Therefore, it is necessary for large transport helicopters to have an emergency door structure that can be thrown out emergently, has a light weight and meets the requirements of regular maintenance and use. Summary of the Invention

[0004] To solve the problems in the prior art that it is difficult to throw out and install the side window glass and the weight of the throw-out cockpit door is heavy, the present invention provides an emergency door and a throwing method thereof. The normal cabin door compression rubber strip sealing method is adopted, and the throwing mechanism is arranged on the emergency door. Operating the throwing mechanism can throw out or remove the emergency door, which is convenient for emergency throwing and regular maintenance and disassembly. The technical solutions are as follows:

[0005] In a first aspect, an emergency door is provided, including: a door frame 10, an emergency door 20, a throw-out hinge 30, an inner handle safety mechanism 40, an inner handle 50, a handle rotating shaft 60, a bolt throw-out mechanism 70, a pull rod mechanism 80, a swing pin throw-out mechanism 90, an outer handle mechanism 100, and an outer handle safety mechanism 110; wherein, a throw-out hinge 30 is installed at the top of the emergency door 20, and an inner handle safety mechanism 40, a handle rotating shaft 60, a bolt throw-out mechanism 70, a pull rod mechanism 80, a swing pin throw-out mechanism 90, and an outer handle safety mechanism 110 are installed at the bottom of the emergency door 20. The inner handle 50 and the outer handle mechanism 100 are connected to the handle rotating shaft 60, the handle rotating shaft 60 is connected to the bolt throw-out mechanism 70, and the bolt throw-out mechanism 70 is connected to the swing pin throw-out mechanism 90 through the pull rod mechanism 80. The emergency door 20 is fixed to the door frame 10 through the throw-out hinge 30, the bolt throw-out mechanism 70, and the swing pin throw-out mechanism 90.

[0006] Optionally, the inner surface part of the emergency door 20 is covered by a cover plate 21; only the inner handle 50 and the inner handle safety mechanism 40 are exposed on the inner surface of the emergency door 20 inside the cabin. The outer handle mechanism 100 and the outer handle safety mechanism 110 are installed on the outer surface of the emergency door 20, and both are flush with the outer surface in the closed state, making the inner and outer surfaces of the emergency door 20 neat and beautiful.

[0007] Optionally, the jettison hinge 30 includes a U-shaped open hinge joint 31, a hinge shaft 32, and a double-ear joint 33. The U-shaped open hinge joint 31 is installed on the emergency door 20, and the hinge shaft 32 and the double-ear joint 33 are installed on the door frame 10. The emergency door 20 is limited by the cooperation of the U-shaped open hinge joint 31 with the double-ear joint 33 and the hinge shaft 32 on the door frame 10. The U-shaped open hinge joint 31 can rotate around the hinge shaft 32 and can be disengaged from the hinge shaft 32 along the U-shaped opening.

[0008] Optionally, the bolt jettison mechanism 70 includes a bolt 71, a rocker arm 73, a spring pre-tensioning mechanism 74, a slider 75, a lock seat 76, and a support 78. The bolt 71, the rocker arm 73, the spring pre-tensioning mechanism 74, and the slider 75 are installed on the emergency door 20, and the lock seat 76 and the support 78 are installed on the door frame 10. The rocker arm 73 connects the bolt 71 and the spring pre-tensioning mechanism 74, and the spring pre-tensioning mechanism 74 pre-tension limits the opening and closing positions of the bolt jettison mechanism 70. The bolt 71 is inserted into the lock seat 76 to limit the front-back and inside-out positions of the emergency door 20, and the slider 75 contacts the inclined surface of the support 78 to limit the up-down position of the emergency door 20.

[0009] Optionally, the swing bolt jettison mechanism 90 includes a swing bolt 91, a slider 92, a spring pre-tensioning mechanism 93, and a lock seat 94. The swing bolt 91, the slider 92, and the spring pre-tensioning mechanism 93 are installed on the emergency door 20, and the lock seat 94 is installed on the door frame 10. The swing bolt 91 is connected to the spring pre-tensioning mechanism 93, and the spring pre-tensioning mechanism 93 pre-tension limits the opening and closing positions of the swing bolt jettison mechanism 90. The swing bolt 91 can rotate around an axis and turns into the U-shaped opening groove of the lock seat 94 in the closed state to limit the inside-out position of the emergency door 20, and the slider 92 contacts the inclined surface of the lock seat 94 to limit the up-down position of the emergency door 20.

[0010] Optionally, the inner handle safety mechanism 40 includes a safety cover 41, a support 42, and a rotating shaft 43. The safety cover 41 can rotate around the rotating shaft 43 on the support 42, and there are two-position limits between the safety cover 41 and the support 42. When the emergency door 20 is in the closed state, the safety cover 41 buckles the inner handle 50, and at this time, the inner handle 50 cannot be operated to rotate, thereby protecting the inner handle 50 from accidental operation. When the inner handle 50 needs to be operated, the safety cover 41 needs to be pulled up first.

[0011] Optionally, the outer handle mechanism 100 includes an outer handle 101, a rotating shaft 102, and an outer handle rotating shaft joint 103. The outer handle 101 can rotate around the rotating shaft 102 on the outer handle rotating shaft joint 103. A torsion spring is provided between the outer handle 101 and the rotating shaft joint 103. The maximum rotation and spring-back angle of the outer handle 101 is 30 degrees. After popping out, the outer handle 101 can be held to operate and rotate.

[0012] Optionally, the outer handle safety mechanism 110 includes: a safety snap 111, a rotating shaft 112, and a support 113; the safety snap 111 can rotate around the rotating shaft 112 on the support 113, and a torsion spring is arranged between the safety snap 111 and the support 113; when the emergency door 20 is in the closed state, the safety snap 111 buckles the end groove of the outer handle 101, and at this time, the outer handle 101 cannot be operated, so as to protect the outer handle 101 from misoperation. When the outer handle 101 needs to be operated, the safety snap 111 needs to be pressed first to pop out the outer handle 101.

[0013] Optionally, the handle rotating shaft 60 is installed in the shaft hole of the emergency door 20. One end of the handle rotating shaft 60 is inserted into the rotating shaft hole of the inner handle 50, and the other end is sleeved on the rotating shaft of the outer handle rotating shaft joint 103. Annular grooves 61 and 62 with the same annular angle are provided at both ends of the handle rotating shaft 60. The pin 52 passes through the fixing hole 51 of the inner handle 50 and then is inserted into the annular groove 61. The pin 105 passes through the annular groove 62 and is fixed in the fixing hole 104 of the outer handle rotating shaft joint 103. When the emergency door 20 is in the closed state, the pin 52 abuts against the upper end of the annular groove 61, and the pin 105 abuts against the upper end of the annular groove 62; when the inner handle 50 is operated, the inner handle 50 drives the pin 52 to push the upper end of the annular groove 61, that is, drives the handle rotating shaft 60 to rotate, and the pin 105 on the outer handle rotating shaft joint 103 slides in the annular groove 62, and the outer handle 101 is not affected; when the outer handle 101 is operated, the outer handle rotating shaft joint 103 drives the pin 105 to push the upper end of the annular groove 62, that is, drives the handle rotating shaft 60 to rotate, and the pin 52 on the inner handle 50 slides in the annular groove 61, and the inner handle 50 is not affected, so as to achieve non-linkage between the inner and outer handles;

[0014] The rocker arm 63 on the handle rotating shaft 60 is connected to the rocker arm 73 of the bolt releasing mechanism 70 through a pull rod 72, and the rocker arm 73 is connected to the swing pin 91 of the swing pin releasing mechanism 90 through a pull rod assembly 80; operating the inner and outer handles can simultaneously drive the bolt 71 to be pulled out and the swing pin 91 to be swung out.

[0015] In a second aspect, a releasing method for the emergency door according to any one of the first aspect is provided. Operating the inner handle 50 or the outer handle 101 drives the bolt 71 to be pulled out from the lock seat 76 and drives the swing pin 91 to be swung out from the lock seat 94, and then the emergency door 20 is pushed outwards to rotate 5-10 degrees around the hinge shaft 32 at the top. The bottom sliders 75 and 92 of the emergency door 20 slide out along the inclined surfaces of the support 78 and the lock seat 94 respectively, and then the emergency door 20 is disengaged from the hinge shaft 32 along the U-shaped opening of the U-shaped opening hinge joint 31, and the emergency door 20 is detached from the door frame 10 and is thrown away. Installing the emergency door 20 is the reverse process of throwing away.

[0016] The in-cabin emergency release process is as follows:

[0017] 1) Pull out the safety cover 41 to release the safety of the inner handle 50;

[0018] 2) Rotate the inner handle 50 backward to unlock the emergency door 20;

[0019] 3) Push the inner handle 50 outward and downward to discard the emergency door 20.

[0020] The process of emergency release outside the cabin is as follows:

[0021] 1) Press the safety snap 111 to pop out the outer handle 101;

[0022] 2) Rotate the outer handle 101 downward to unlock the emergency door 20;

[0023] 3) Pull the outer handle 101 outward and downward to discard the emergency door 20.

[0024] The beneficial effects of the present invention are at least as follows:

[0025] a. After the emergency door is discarded, the passage is unobstructed;

[0026] b. The operation of discarding the emergency door is simple and reliable;

[0027] c. The installation and disassembly of the emergency door are convenient;

[0028] d. The discarding mechanism is simple;

[0029] e. The emergency door is beautiful without protrusions and does not affect daily use;

[0030] f. The stiffness and sealing effect of the emergency door are good. Description of the Drawings

[0031] Figure 1 is a schematic diagram of the inside of the cabin of the emergency door of the present invention;

[0032] Figure 2 is a partial schematic diagram of the outside of the cabin of the emergency door of the present invention;

[0033] Figure 3 is a schematic diagram of the release hinge of the emergency door of the present invention;

[0034] Figure 4 is a schematic diagram of the operation of the inner handle and the inner handle safety mechanism of the emergency door of the present invention;

[0035] Figure 5 is a schematic diagram of the bolt release mechanism, the pull rod mechanism and the swing bolt release mechanism in the inner cavity at the bottom of the emergency door;

[0036] Figure 6 is a schematic diagram of the movement of the bolt release mechanism of the emergency door;

[0037] Figure 7It is a schematic diagram of the movement of the swing pin release mechanism of the emergency door;

[0038] Figure 8 It is a schematic diagram of the inner handle, handle rotating shaft, outer handle mechanism and outer handle safety mechanism of the emergency door;

[0039] Figure 9 It is a schematic cross-section of the emergency door near the swing pin release mechanism of the emergency door. Specific implementation manners

[0040] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0041] The features and illustrative embodiments of various aspects of the present invention will be described in detail below. In the following detailed description, many specific details are set forth in order to provide a thorough understanding of the present invention. However, it will be apparent to those of ordinary skill in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is only intended to provide a better understanding of the present invention by showing examples of the present invention. The present invention is in no way limited to any specific arrangements and methods set forth below, but covers any improvements, substitutions and modifications of structures, methods, and devices without departing from the spirit of the present invention. Well-known structures and technologies are not shown in the drawings and the following description to avoid unnecessarily obscuring the present invention.

[0042] It should be noted that, without conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other, and the various embodiments may refer to and cite each other.

[0043] The present invention will be described in detail below with reference to the accompanying drawings and specific implementation manners.

[0044] As Figure 1 shown, the emergency door is in a closed state. The emergency door 20 is installed on the door frame 10 of the emergency exit passage on the side of the cockpit. The emergency door 20 is not usually opened and can be opened as an emergency escape exit in case of emergency. It can also be operated by the release mechanism to open when maintenance such as regular inspection requires opening this emergency door.

[0045] The emergency door 20 is installed on the structure of the door frame 10 through four limiting points, namely, two U-shaped opening hinge joints 31 at the top, a bolt 71, and a swing bolt 91. The fixed structures corresponding to only the four limiting points exposed on the door frame 10 include a double-ear joint 33, a lock seat 76, a support 78, and a lock seat 94. Among them, the throw-hinge 30 limits the front, rear, lateral inside and outside positions of the emergency door 20, the bolt 71 limits the front, rear, lateral inside and outside positions of the emergency door 20, the swing bolt 91 only limits the lateral inside and outside positions of the emergency door 20, and the throw-hinge 30, a slider 75, and a slider 92 jointly limit the up and down positions of the emergency door 20.

[0046] Only the inner handle safety mechanism 40 and the inner handle 50 are exposed on the inner surface of the emergency door 20. The handle rotating shaft 60, the bolt throwing mechanism 70, the tie-rod mechanism 80, and the swing bolt throwing mechanism 90 are installed inside the bottom cavity of the emergency door 20 and covered by a cover plate 21 on the outside. The rotating shaft of the inner handle 50 passes through the shaft hole of the cover plate 21.

[0047] As Figure 2 shown, the emergency door 20 is in the closed state. Only the outer handle 101, the outer handle rotating shaft joint 103, and the safety snap button 111 of the outer handle can be seen on the outer surface of the emergency door 20, and they are all flush with the outer surface of the emergency door 20, and there are no any protrusions on the outer surface of the emergency door 20.

[0048] The transition between the emergency door 20 and the door frame 10 is natural and the sealing is good. There are no protrusions outside the cabin, and there are few simple and exposed objects inside the cabin. After throwing, the handle and the mechanism are thrown away together with the emergency door 20. Only the door frame 10, the double-ear joint 33, the lock seat 76, the support 78, and the lock seat 94 remain on the emergency exit passage, and the double-ear joint 33, the lock seat 76, the support 78, and the lock seat 94 are all inside the opening of the door frame 10. Only a little of the slider inclined surfaces of the support 78 and the lock seat 94 are exposed, and there are no any other protrusions. The emergency escape passage is unobstructed.

[0049] See Figure 3 , the U-shaped opening hinge joint 31 installed at the top of the emergency door 20 is inserted on the hinge shaft 32 of the double-ear joint 33 on the door frame 10, which is similar to the connection between a single-ear joint and a double-ear joint, except that the single-ear joint is grooved. The U-shaped opening hinge joint 31 can rotate around the hinge shaft 32 and disengage from the double-ear joint 33 along the U-shaped opening. The double-ear joint 33 is connected to the door frame 10 through a toothed backing plate 34, and the double-ear joint 33 can adjust its inside and outside positions through the toothed backing plate 34, so as to adjust the relative inside and outside positions at the top of the emergency door.

[0050] See Figure 4The safety cover 41 can rotate about a shaft 43 on a support 42. A spring-loaded ball retaining device is provided on the support 42, providing two position limits between the safety cover 41 and the support 42, restricting the safety cover 41 to its closed and raised positions, respectively. The opening angle of the safety cover 41 is 90 degrees. When the emergency door 20 is closed, the central groove of the safety cover 41 engages the inner handle 50, restricting the front and rear positions of the inner handle 50 and preventing it from rotating. This protects the inner handle 50 from being misoperated. To operate the inner handle 50, the safety cover 41 must first be pulled up to release the restriction on the inner handle 50.

[0051] See also Figure 5 , Figure 5 The cover plate 21 is removed, and the rocker arm 63 on the handle shaft 60 is connected to the rocker arm 73 of the latch releasing mechanism 70 through the pull rod 72. The rocker arm 73 is connected to the swing pin 91 of the swing pin releasing mechanism 90 through the pull rod assembly 80. The entire mechanism is connected to form an integrated releasing mechanism. Operating the inner and outer handles can drive the handle shaft 60 and simultaneously drive the latch 71 to be pulled out and the swing pin 91 to be swung out.

[0052] See also Figure 6 The latch 71, rocker arm 73, spring preload mechanism 74, and slider 75 are mounted on the emergency door 20. The lock seat 76 and support 78 are mounted on the door frame 10. The rocker arm 73 connects the latch 71 and spring preload mechanism 74. The latch 71 is inserted into the lock seat 76 on the door frame 10 to limit the front-to-back and inside-out position of the emergency door 20. The lock seat 76 is mounted on the door frame 10 via a toothed backing plate 77. The toothed backing plate 77 allows adjustment of its inside-to-out and front-to-back position, thereby adjusting the inside-to-out and front-to-back relative position of the front bottom of the emergency door 20. The slider 75 contacts the inclined surface of the support 78 and limits the vertical position of the front bottom of the emergency door 20.

[0053] See also Figure 7 A swing pin 91, slider 92, and spring preload mechanism 93 are mounted on the emergency door 20, and a lock seat 94 is mounted on the door frame 10. The swing pin 91 is connected to the spring preload mechanism 93. The swing pin 91 is rotatable about its axis. When the emergency door 20 is closed, the swing pin 91 rotates into the U-shaped opening of the lock seat 94, limiting the inward and outward position of the emergency door 20. When the emergency door 20 is released, the swing pin 91 rotates out of the U-shaped opening of the lock seat 94. The lock seat 94 is mounted on the door frame 10 via a toothed backing plate 95. The toothed backing plate 95 can be used to adjust its inward and outward position, thereby adjusting the relative inward and outward position of the rear bottom of the emergency door 20. The slider 92 contacts the inclined surface of the lock seat 94 and limits the vertical position of the rear bottom of the emergency door 20.

[0054] The rocker arm 73 is connected to the spring pre-tensioning mechanism 74, and the swing pin 91 is connected to the spring pre-tensioning mechanism 93. The two spring pre-tensioning mechanisms pre-tension and limit the entire mechanism, which can be used to pre-tension and limit the ejection mechanism in the open and closed states. At the same time, they also pre-tension and secure the latch pin 71 and the swing pin 91.

[0055] See Figure 8 , the inner handle 50 and the outer handle mechanism 100 are respectively installed at both ends of the handle rotating shaft 60. The inner handle 50 is protected by the inner handle safety mechanism 40 to prevent misoperation, and the outer handle mechanism 100 is protected by the outer handle safety mechanism 110 to prevent misoperation.

[0056] The rocker arm 63 on the handle rotating shaft 60 is connected to the rocker arm 73 of the latch pin ejection mechanism 70 through the pull rod 72, and the rocker arm 73 is connected to the swing pin 91 of the swing pin ejection mechanism 90 through the pull rod assembly 80; operating the inner and outer handles can simultaneously drive the latch pin 71 to be pulled out and the swing pin 91 to be swung out.

[0057] The outer handle mechanism 100 includes: an outer handle 101, a rotating shaft 102, and a rotating shaft joint 103. The outer handle 101 can rotate around the rotating shaft 102 on the outer handle rotating shaft joint 103. A torsion spring is provided between the outer handle 101 and the rotating shaft joint 103. The maximum rotation and spring-back angle of the outer handle 101 is 30 degrees. After popping out, the outer handle 101 can be held to operate and rotate.

[0058] The outer handle safety mechanism 110 includes: a safety snap 111, a rotating shaft 112, and a support 113. The safety snap 111 can rotate around the rotating shaft 112 on the support 113. A torsion spring is provided between the safety snap 111 and the support 113; when the emergency door 20 is in the closed state, the safety snap 111 buckles the end groove of the outer handle 101. At this time, the outer handle 101 cannot be operated, thereby protecting the outer handle 101 from misoperation. When the outer handle 101 needs to be operated, the safety snap 111 needs to be pressed first to pop out the outer handle 101.

[0059] The handle rotating shaft 60 is installed in the shaft hole of the emergency door 20. One end of the handle rotating shaft 60 is inserted into the rotating shaft hole of the inner handle 50, and the other end is sleeved on the rotating shaft of the outer handle rotating shaft joint 103. Ring grooves 61 and 62 with the same annular angle are provided at both ends of the handle rotating shaft 60. The pin 52 passes through the fixing hole 51 of the inner handle 50 and then is inserted into the ring groove 61. The pin 105 passes through the ring groove 62 and is fixed in the fixing hole 104 of the outer handle rotating shaft joint 103. When the emergency door 20 is in the closed state, the pin 52 abuts against the upper end of the ring groove 61, and the pin 105 abuts against the upper end of the ring groove 62; when the inner handle 50 is operated, the inner handle 50 drives the pin 52 to push the upper end of the ring groove 61, that is, drives the handle rotating shaft 60 to rotate, and the pin 105 on the outer handle rotating shaft joint 103 slides in the ring groove 62, and the outer handle 101 is not affected; when the outer handle 101 is operated, the outer handle rotating shaft joint 103 drives the pin 105 to push the upper end of the ring groove 62, that is, drives the handle rotating shaft 60 to rotate, and the pin 52 on the inner handle 50 slides in the ring groove 61, and the inner handle 50 is not affected, so as to achieve non-linkage between the inner and outer handles.

[0060] See Figure 9 , a sealing rubber strip 120 is arranged between the door frame 10 and the emergency door 20. The sealing rubber strip 120 is arranged in a whole circle along the periphery of the emergency door 20. After the emergency door 20 compresses the sealing rubber strip 120, sealing and waterproofing are formed.

[0061] As Figure 9 shown, the slider 92 contacts the inclined surface of the lock seat 94 for up and down limit. When the emergency door 20 is jettisoned, the bottom of the emergency door is guided by the sliders 75 and 92 and the inclined surfaces of the support 78 and the lock seat 94 to slide outwards.

[0062] The working principle of emergency jettison inside the emergency door cabin is as follows:

[0063] 1) Pull out the inner handle safety cover 41 to release the inner handle safety;

[0064] 2) Rotate the inner handle 40 backwards to drive the front bolt 81 to be pulled out from the lock seat 86 and the rear swing bolt 91 to rotate out from the lock seat 94;

[0065] 3) Push the inner handle 40 outwards, and the emergency door 20 rotates 5-10 degrees around the hinge shaft 32, and the bottom slides out along the inclined surface of the support slider;

[0066] 4) Push the inner handle 40 downwards to jettison the emergency door 20, and the emergency door 20 drops obliquely downwards along the U-shaped opening of the hinge joint 31.

[0067] The working principle of emergency jettison outside the cabin is as follows:

[0068] 1) Press the outer handle safety 60 to pop out the outer handle 59;

[0069] 2) Rotate the outer handle 59 downward to drive the front bolt 81 out of the lock base 86 and the rear swing bolt 91 out of the lock base 94;

[0070] 3) Push the outer handle 59 outwards, and the emergency door 20 rotates 5-10 degrees around the hinge axis 32, and the bottom slides out along the inclined plane of the support slider;

[0071] 4) Push the outer handle 59 downward to discard the emergency door 20, and the emergency door 20 falls obliquely downward along the U-shaped opening of the hinge joint 31.

[0072] The above only expresses the implementation modes of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. In addition, the parts not elaborated in the present invention are all conventional techniques.

Claims

1. An emergency door, characterized in that, Comprising: A door frame (10), an emergency door (20), a release hinge (30), an inner handle safety mechanism (40), an inner handle (50), a handle rotating shaft (60), a bolt release mechanism (70), a pull rod mechanism (80), a swing pin release mechanism (90), an outer handle mechanism (100), and an outer handle safety mechanism (110); wherein, a release hinge (30) is installed at the top of the emergency door (20), and an inner handle safety mechanism (40), a handle rotating shaft (60), a bolt release mechanism (70), a pull rod mechanism (80), a swing pin release mechanism (90), and an outer handle safety mechanism (110) are installed at the bottom of the emergency door (20). The inner handle (50) and the outer handle mechanism (100) are connected to the handle rotating shaft (60), the handle rotating shaft (60) is connected to the bolt release mechanism (70), and the bolt release mechanism (70) is connected to the swing pin release mechanism (90) through the pull rod mechanism (80). The emergency door (20) is fixed to the door frame (10) through the release hinge (30), the bolt release mechanism (70), and the swing pin release mechanism (90).

2. The emergency door according to claim 1, wherein The inner surface part of the emergency door (20) is covered with a cover plate (21); only the inner handle (50) and the inner handle safety mechanism (40) are exposed on the inner surface of the cabin of the emergency door (20). The outer handle mechanism (100) and the outer handle safety mechanism (110) are installed on the outer surface of the cabin of the emergency door (20), and both are flush with the outer surface in the closed state.

3. The emergency door according to claim 1, characterized in that, The release hinge (30) comprises: a U-shaped open hinge joint (31), a hinge shaft (32), and a double-ear joint (33). The U-shaped open hinge joint (31) is installed on the emergency door (20), the hinge shaft (32) and the double-ear joint (33) are installed on the door frame (10), and the emergency door (20) is limited by the cooperation of the U-shaped open hinge joint (31) with the double-ear joint (33) and the hinge shaft (32) on the door frame (10). The U-shaped open hinge joint (31) can rotate around the hinge shaft (32) and can be disengaged from the hinge shaft (32) along the U-shaped opening.

4. The emergency door according to claim 1, characterized in that, The bolt release mechanism (70) comprises: a bolt (71), a rocker arm (73), a spring pre-tightening mechanism (74), a slider (75), a lock seat (76), and a support (78); the bolt (71), the rocker arm (73), the spring pre-tightening mechanism (74), and the slider (75) are installed on the emergency door (20), the lock seat (76) and the support (78) are installed on the door frame (10), the rocker arm (73) connects the bolt (71) and the spring pre-tightening mechanism (74), and the spring pre-tightening mechanism (74) pre-tightens and limits the opening and closing positions of the bolt release mechanism (70); the bolt (71) is inserted into the lock seat (76) to limit the front-back and inside-out positions of the emergency door (20), and the slider (75) contacts the inclined surface of the support (78) to limit the up-down position of the emergency door (20).

5. The emergency door according to claim 4, characterized in that The swing pin release mechanism (90) includes: a swing pin (91), a slider (92), a spring preloading mechanism (93), and a lock seat (94); the swing pin (91), the slider (92), and the spring preloading mechanism (93) are installed on the emergency door (20), the lock seat (94) is installed on the door frame (10), the swing pin (91) is connected to the spring preloading mechanism (93), and the spring preloading mechanism (93) preloads and limits the opening and closing positions of the swing pin release mechanism (90); the swing pin (91) can rotate around an axis, and when in the closed state, it rotates into the U-shaped opening groove of the lock seat (94) to limit the inside and outside positions of the emergency door (20), and the slider (92) contacts the inclined surface of the lock seat (94) to limit the up and down positions of the emergency door (20).

6. The emergency door according to claim 5, characterized in that The inner handle safety mechanism (40) includes: a safety cover (41), a support (42), and a rotating shaft (43); the safety cover (41) can rotate around the rotating shaft (43) on the support (42), and there are two positions of limit between the safety cover (41) and the support (42); when the emergency door (20) is in the closed state, the safety cover (41) buckles the inner handle (50), and at this time, the inner handle (50) cannot be operated to rotate, so as to protect the inner handle (50) from accidental operation. When the inner handle (50) needs to be operated, the safety cover (41) needs to be pulled up first.

7. The emergency door according to claim 6, wherein The outer handle mechanism (100) includes: an outer handle (101), a rotating shaft (102), and an outer handle rotating shaft joint (103); the outer handle (101) can rotate around the rotating shaft (102) on the outer handle rotating shaft joint (103), a torsion spring is arranged between the outer handle (101) and the rotating shaft joint (103), the maximum rotation and spring-back angle of the outer handle (101) is 30 degrees, and after popping out, the outer handle (101) can be held to operate and rotate.

8. The emergency door according to claim 7, characterized in that, The outer handle safety mechanism (110) includes: a safety snap (111), a rotating shaft (112), and a support (113); the safety snap (111) can rotate around the rotating shaft (112) on the support (113), and a torsion spring is arranged between the safety snap (111) and the support (113); when the emergency door (20) is in the closed state, the safety snap (111) buckles the end groove of the outer handle (101), and at this time, the outer handle (101) cannot be operated, so as to protect the outer handle (101) from accidental operation. When the outer handle (101) needs to be operated, the safety snap (111) needs to be pressed down first to pop out the outer handle (101).

9. The emergency door according to claim 8, characterized in that, The handle rotating shaft (60) is installed in the shaft hole of the emergency door (20). One end of the handle rotating shaft (60) is inserted into the rotating shaft hole of the inner handle (50), and the other end is sleeved on the rotating shaft of the outer handle rotating shaft joint (103). Ring grooves (61) and ring grooves (62) with the same annular angle are provided at both ends of the handle rotating shaft (60). After the pin (52) passes through the fixing hole (51) of the inner handle (50), it is inserted into the ring groove (61). After the pin (105) passes through the ring groove (62), it is fixed in the fixing hole (104) of the outer handle rotating shaft joint (103). When the emergency door (20) is in the closed state, the pin (52) abuts against the upper end of the ring groove (61), and the pin (105) abuts against the upper end of the ring groove (62). When the inner handle (50) is operated, the inner handle (50) drives the pin (52) to push the upper end of the ring groove (61), that is, drives the handle rotating shaft (60) to rotate, and the pin (105) on the outer handle rotating shaft joint (103) slides in the ring groove (62), and the outer handle (101) is not affected. When the outer handle (101) is operated, the outer handle rotating shaft joint (103) drives the pin (105) to push the upper end of the ring groove (62), that is, drives the handle rotating shaft (60) to rotate, and the pin (52) on the inner handle (50) slides in the ring groove (61), and the inner handle (50) is not affected, so as to achieve non-linkage between the inner and outer handles. The rocker arm (63) on the handle rotating shaft (60) is connected to the rocker arm (73) of the bolt throwing mechanism (70) through a pull rod (72). The rocker arm (73) is connected to the swing bolt (91) of the swing bolt throwing mechanism (90) through a pull rod assembly (80). Operating the inner and outer handles can drive the bolt (71) to be pulled out and the swing bolt (91) to be swung out at the same time.

10. A method for deploying an emergency door according to any one of claims 1 to 9, characterized in that, Operating the inner handle (50) or the outer handle (101) drives the bolt (71) to be pulled out from the lock base (76) and the swing bolt (91) to be swung out from the lock base (94). Then, push the emergency door (20) outward to rotate a preset angle around the hinge shaft (32) at the top. The bottom slider (75) and the slider (92) of the emergency door (20) slide out along the inclined surfaces of the support (78) and the lock base (94) respectively. Then, the emergency door (20) disengages from the hinge shaft (32) along the U-shaped opening of the U-shaped opening hinge joint (31), and the emergency door (20) is thrown off from the door frame (10). Installing the emergency door (20) is the reverse process of throwing.

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