Sierra escape door

Abstract

The invention relates to the field of plug-type doors, and discloses a plug-type emergency door, comprising a base fixed on the upper part of a door frame, a group of coupling drive mechanisms are respectively installed at both ends of the base, and the two groups of coupling drive mechanisms are fixedly connected through a sliding rod and rotatably connected through a pull rod; at least one or at most two sliding sleeves are sleeved on the sliding rod, a guide wheel rotatably connected to one of the sliding sleeves is limited in a guide groove on the base, and each sliding sleeve is fixedly connected to a door panel through a door-carrying frame; a gas spring is fixed on the pull rod, and the telescopic end of the gas spring is fixedly connected to the sliding sleeve connected to the guide wheel; the coupling drive mechanism can make reciprocating motion relative to the base under the drive of the gas spring and external force respectively to drive the door panel to open and close; at least one manually unlocked safety lock is also installed on both sides of the door panel, and the unlocking piece of the safety lock is connected to the manual unlocking pull rod through an unlocking wire. In an emergency, the plug-type emergency door is opened to both sides close to the vehicle body, does not occupy much space outside the vehicle, is not easy to hit obstacles outside the vehicle, and is easy to open.

Description

Technical Field

[0001] The invention relates to the field of driving mechanisms, and in particular to a Sierra escape door. Background Art

[0002] At present, Sierra doors are usually used for bus doors, subway doors or high-speed rail doors. Sierra doors have good sealing properties and take up little space, making the overall vehicle model beautiful and elegant. The quality of Sierra door locks directly affects the safety and sealing properties of Sierra doors. In order to improve the safety of Sierra doors, researchers in the field mainly focus on the structure of Sierra door locks.

[0003] The Sierra door lock structure currently used usually guides a guide wheel on the door lock into a guide groove on the frame when the door is closed, and limits the movement of the door lock through the guide groove. The door lock is fixed on the door, which limits the movement of the door and achieves the purpose of locking the door. On the one hand, this door lock structure has great safety hazards, because when the vehicle is driving, the road surface is bumpy and the guide wheel on the door lock will roll back and forth in the guide groove, which will cause the door to be poorly closed. When running at high speed, airflow will enter the car through the door gap, affecting the passenger experience; when the vibration is large, the guide wheel may even slide back from the guide groove, causing the door to open automatically, which poses a great safety hazard. On the other hand, in this door lock structure, the power source is fixed on the door frame, and the driving end of the power source is fixed on the guide wheel. When the door is closed or opened, the force applied by the power source is all applied to the guide wheel. The guide wheel is the only stress point, which is prone to damage and acceleration due to stress concentration. And because there is only this stress point, when closing or opening the door, the door panels on both sides cannot be guaranteed to be absolutely synchronized. This will result in the inability to guarantee absolute balance when the doors on both sides are closed or opened, which can easily cause the door panels to shake.

[0004] In order to solve the above-mentioned safety hazard problem, the common solution is to add a cylinder or a motor to pull the guide wheel after the car door is closed, so that the guide wheel is confined in the guide groove. However, this method requires a large pulling force to limit the guide wheel after the car door is closed. The problem of unstable closing or opening of the door has not been well solved, which does not conform to the concept of green environmental protection in today's society.

[0005] In addition, nowadays bus accidents happen frequently, so safe escape is very important. Now buses generally use escape windows, and in emergency situations, the windows on both sides can be opened manually or automatically, so that passengers can escape through the windows. But there are big problems with escape windows. First, there is a certain height, and it is not easy for passengers to climb over, especially the elderly and children. Second, the escape window has a certain height, and passengers will fall over the window, causing secondary injuries. Summary of the invention

[0006] Purpose of the invention: In view of the problems existing in the prior art, the present invention provides a Sierra escape door. By setting a coupling drive mechanism and changing the fixed position of the escape door power source, the Sierra escape door can disperse the force originally concentrated on the guide wheel to the guide wheel and the coupling drive mechanism on both sides thereof, so that when the escape door is opened or closed, the door panels on both sides can ensure absolute synchronous opening or closing, which is very stable and reliable, effectively avoiding the phenomenon that the guide wheel automatically disengages from the guide groove, and can greatly reduce the damage of the guide wheel, save power, and be green and environmentally friendly. In addition, in an emergency, the Sierra escape door opens to both sides close to the vehicle body, does not occupy much space outside the vehicle, is not easy to hit obstacles outside the vehicle, and is easy to open.

[0007] Technical solution: The present invention provides a Sierra escape door, comprising a base fixed on the upper part of the door frame, with a group of coupling drive mechanisms installed at both ends of the base, the two groups of coupling drive mechanisms are fixedly connected by a sliding rod and rotatably connected by a pull rod; at least one and at most two sliding sleeves are sleeved on the sliding rod, a guide wheel rotatably connected to one of the sliding sleeves is limited in a guide groove on the base, and each of the sliding sleeves is fixedly connected to a door panel through a door carrying frame; a gas spring is fixed on the pull rod, and the telescopic end of the gas spring is fixedly connected to the sliding sleeve connected to the guide wheel; the coupling drive mechanism can make reciprocating motion relative to the base to drive the door panel to open and close under the drive of the gas spring and external force respectively; at least one manually unlocked safety lock is also installed on both sides of the door panel, and the unlocking piece of the safety lock is connected to the manual unlocking pull rod through an unlocking wire.

[0008] Furthermore, in the two groups of the coupling drive mechanisms, the sliding bracket is fixedly connected by the sliding rod, and the driving arm is rotationally connected by the pulling rod; in the two groups of the coupling drive mechanisms, the sliding bracket in at least one group is installed on the base through a guiding mechanism, and can reciprocate relative to the base under the action of external force and the guiding mechanism; one end of the driving arm is rotationally connected to the base, and the other end is rotationally connected to the pulling rod; one end of the connecting arm is rotationally connected to the middle part of the driving arm, and the other end is rotationally connected to the sliding bracket. When the power source pulls or pushes the pull rod, the rotation connection point between the pull rod and the driving arms in the coupling drive mechanisms on both sides moves away from or approaches the rotation connection point between the connecting arm and the sliding bracket, so that the driving arm rotates counterclockwise or clockwise around the rotation connection point between it and the base, and the connecting arm rotates clockwise or counterclockwise around the rotation connection point between it and the driving arm, thereby forcing the sliding bracket to reciprocate relative to the base under the action of the guide mechanism; when the sliding bracket moves to the extreme position under the guidance of the guide mechanism, the coupling drive mechanisms on both sides are in a self-locking state, at which time the rotation connection point between the pull rod and the driving arm, the rotation connection point between the driving arm and the base, the rotation connection point between the driving arm and the connecting arm, and the rotation connection point between the connecting arm and the sliding bracket The four dynamic connection points are all located in the same straight line. At this time, even if the external force of the power source on the pull rod is released, the above four points will not easily deviate from the straight line because they are located in the same straight line; and the guide wheel arranged on the sliding sleeve moves along the sliding rod together with the sliding sleeve, and the sliding rod is an integrated structure with the sliding brackets on both sides, so when the door panel is closed, the guide wheel is just located in the guide groove, and the above four points are just located in the same straight line, so that when the door panel is closed, the pulling force or pushing force of the power source can be released, or the power source only needs to apply a smaller pulling force or pushing force to ensure that the above four points do not deviate from the same straight line, which can effectively prevent the guide wheel from sliding out of the guide groove, thereby achieving an effective door self-locking effect, saving power, and being green and environmentally friendly.

[0009] Furthermore, the guide mechanism is a guide wheel or a guide block, the guide wheel or the guide block is installed on the sliding bracket, and the guide wheel or the guide block is limited in a bracket guide groove opened on the base; under the drive of the power source and the guiding action of the bracket guide groove, the guide wheel or the guide block can reciprocate in the bracket guide groove. The guide wheel or guide block and the bracket guide groove are provided to enable the coupling drive mechanism to realize reciprocating motion. In actual application, at least one set of coupling drive mechanisms is provided with a guide wheel or guide block to cooperate with the bracket guide groove, or both sets of coupling drive mechanisms are provided with a guide wheel or guide block to cooperate with the bracket guide groove; when the power source pulls or pushes the pull rod, the connecting arm is driven by the driving arm, and then the sliding bracket is driven to reciprocate linearly up and down relative to the base in the cooperation of the guide wheel or guide block and the bracket guide groove, and then the two sets of coupling drive mechanisms, the pull rod, the power source, the sliding rod, the sliding sleeve and the guide wheel can reciprocate linearly up and down relative to the base absolutely synchronously, ensuring that the door panels on both sides are opened or closed absolutely synchronously, and effectively ensuring the balance of the door panels on both sides when closing or opening the door panels.

[0010] Preferably, the support guide groove is a waist-shaped groove. The waist-shaped support guide groove enables the guide wheel or guide block on the sliding support to perform linear reciprocating motion along the support guide groove.

[0011] Preferably, a group of the coupling drive mechanisms close to the guide wheel also includes a limit block, the limit block is fixed on the base, and the limit block and the pull rod are respectively located on both sides of the driving arm; when the rotation connection point between the pull rod and the driving arm moves to one side to the extreme position, the limit block presses against one side of the rotation connection point between the driving arm and the pull rod; when the rotation connection point between the pull rod and the driving arm moves to the other side to the extreme position, the limit block and the driving arm do not contact each other. The setting of the limit block makes it possible for the limit block to press against one side of the rotation connection point between the pull rod and the driving arm when the rotation connection point between the pull rod and the driving arm moves to the extreme position to one side (at this time the door panel is closed), the limit block presses against one side of the rotation connection point between the driving arm and the pull rod; if the power source used is a driving cylinder, then at this time the rotation connection point between the pull rod and the driving arm, the rotation connection point between the driving arm and the base, the rotation connection point between the driving arm and the connecting arm, and the rotation connection point between the connecting arm and the sliding bracket are located in the same straight line. At this time, the limit block presses against one side of the rotation connection point between the driving arm and the pull rod, so that the above four points can be kept in the same straight line. Even if the external force of the power source on the pull rod is released, the above four points will not easily deviate from the straight line because they are located in the same straight line; and the guide wheel arranged on the sliding sleeve slides along the sliding sleeve together with the sliding sleeve The rod moves, and the sliding rod is an integrated structure with the sliding brackets on both sides, so when the door panel is closed, the guide wheel is just located in the guide groove, and the above four points are just located in the same straight line. In this way, the pulling force or pushing force of the power source can be released when the door panel is closed, or the power source only needs to apply a smaller pulling force or pushing force to ensure that the above four points do not deviate from the same straight line, which can effectively prevent the guide wheel from sliding out of the guide groove, thereby achieving an effective self-locking effect of the car door, saving power, and being green and environmentally friendly; if the power source used is a driving motor, the above four points must exceed the above straight line and then tilt slightly to the side of the limit block, so that the driving motor has a self-locking function. At this time, the limit block is pressed against one side of the rotation connection point of the driving arm and the pull rod, which can also achieve an effective self-locking effect of the car door.

[0012] Preferably, the limit block is fixedly connected to the base by an adjusting bolt. With this design, the spacing between the limit block and the driving arm is adjustable. After the door panel is closed, if the power source is a driving cylinder, the limit block is adjusted by adjusting the adjusting bolt so that the above four points are just located in the same straight line and abut against the rotation connection point between the driving arm and the pull rod; if the power source is a driving motor, the limit block is adjusted by adjusting the adjusting bolt so that the above four points just exceed the above straight line and abut against the rotation connection point between the driving arm and the pull rod.

[0013] Furthermore, one side of the sliding brackets in the two groups of the shaft coupling drive mechanisms is also respectively provided with sliding rollers, and the sliding rollers cooperate with the slide rails provided on the base. The sliding rollers and the slide rails are provided to make the reciprocating motion of the shaft coupling drive mechanism more stable.

[0014] Preferably, the slide rail is a U-shaped slide rail.

[0015] Furthermore, if there are two sliding sleeves, there are two door panels, and the opposite side edges of the two door panels are respectively installed with center seam sealing strips, and the opposite side edges and the upper and lower side edges are respectively installed with side seam sealing strips; after closing the door panels on both sides, the center seam sealing strips on the door panels on both sides are sealed with each other by mortise and tenon joints, and the side seam sealing strips on the door panels on both sides are respectively sealed with the door frames on both sides; if there is one sliding sleeve, there is one door panel, and the four side edges of the door panel are all installed with the side seam sealing strips; after closing the door panel, the side seam sealing strips are respectively sealed with the door frames on the four sides of the door panel. The provision of the center seam sealing strip and the side seam sealing strip enables the Bensela escape door to effectively seal the door panel after the door panel is closed, preventing the door panel from shaking, wind, rain, etc. during vehicle operation.

[0016] Furthermore, the opposite sides of the strip bodies of the center seam sealing strips on both sides are respectively provided with mortise and tenon grooves and mortise and tenon protrusions for mortise and tenon matching, the mortise and tenon grooves of the strip body on one side are arranged opposite to the mortise and tenon protrusions of the strip body on the other side, and the opposite sides of the two strip bodies are respectively provided with center seam door panel claws for clamping in the door panel profiles on both sides. When installing the center seam sealing strips on the door panels on both sides, the center seam door panel claws on one side of the strip bodies on both sides can be clamped in the profiles on the opposite sides of the door panels on both sides, and it is necessary to pay attention to the positional relationship between the mortise and tenon grooves and the mortise and tenon protrusions to achieve an effective sealing effect.

[0017] Furthermore, the ends of the tenon grooves of the rubber strip bodies on both sides are respectively provided with middle seam water guide strips. The middle seam water guide strips are provided to prevent rainwater from the outside of the door panel from entering the door panel through the gap between the rubber strip bodies on both sides, and the middle seam water guide strips can timely guide rainwater entering through the gap between the rubber strip bodies on both sides from the outside of the vehicle to the bottom of the door panel to flow out.

[0018] Furthermore, the outer walls of the rubber strip bodies on both sides which are opposite to each other are respectively provided with middle seam outer sealing edges, which are used to seal the gap between the rubber strip body and the outer wall plane of the door panel.

[0019] Furthermore, the inner walls of the rubber strip bodies on both sides which are opposite to each other are respectively provided with inner sealing edges of the middle seam, which are used to seal the gap between the rubber strip body and the inner wall plane of the door panel.

[0020] Furthermore, the side of the side seam sealing rubber strip opposite to the door panel is provided with a side seam door panel clamping claw for clamping in the door panel profile. When installing the side seam sealing rubber strip, the side seam door panel clamping claw on one side thereof is clamped in the door panel profile.

[0021] Furthermore, the outer wall of the side seam sealing strip located on the same side as the side seam door panel claw is also provided with a door panel sealing edge, which is used to seal the gap between the side seam sealing strip and the plane of the door panel outer wall.

[0022] Furthermore, a door frame sealing edge is arranged on the outer side of the side seam sealing strip relative to the door frame, and the door frame sealing edge is used to seal the gap between the side seam sealing strip and the plane of the door frame outer wall.

[0023] Furthermore, a side seam water guide strip is provided on the inner wall of the side seam sealing strip opposite to the door frame. The side seam water guide strip is provided to prevent rainwater outside the door panel from entering the door panel through the gap between the side seam sealing strip and the door frame, and the side seam water guide strip can guide the rainwater entering from the outside to the bottom of the door panel in time to flow out.

[0024] Furthermore, a buffer hollow cavity is provided in the strip body of the side seam sealing strip. The provision of the buffer hollow cavity can, on the one hand, provide a certain buffering effect on the side seam sealing strip when the door is closed, and at the same time, make the side seam sealing strip have a greater deformation effect after being squeezed with the door frame, thereby improving the sealing effect of the side seam sealing strip, and on the other hand, can reduce the weight of the side seam sealing strip and save the cost of raw materials.

[0025] Furthermore, the Sierra escape door also includes a pneumatic unlocking cylinder installed on the door frame, and the telescopic end of the pneumatic unlocking cylinder is connected to the unlocking piece of each safety lock through an unlocking wire. The setting of the pneumatic unlocking cylinder allows the safety lock to be opened pneumatically. The operation only requires lightly touching the opening button of the pneumatic unlocking cylinder. After the pneumatic unlocking cylinder is ventilated, the unlocking piece of the safety lock can be automatically pulled through the unlocking wire, and it can be easily unlocked without pulling the manual unlocking rod.

[0026] Furthermore, the Sierra escape door further comprises a driving cylinder, which is fixed on the pull rod, and whose telescopic end is fixedly connected to the sliding sleeve connected to the guide wheel. Because after the Sierra escape door is opened by the gas spring, the telescopic end of the driving cylinder can be used to pull the sliding sleeve connected to the guide wheel, so that the sliding sleeve returns to the guide groove along the sliding rod with the guide wheel. In this process, the driving cylinder needs to overcome the elastic force of the gas spring all the time and compress the gas spring to the initial state; if there is no driving cylinder, when the Sierra safety door is opened and wants to be closed, it is very difficult to close the door manually.

[0027] Furthermore, a door panel guide mechanism consisting of a rotating block, a first guide wheel and a second guide wheel is also provided on one side of the bottom of the door panel, one end of the rotating block is horizontally rotatably connected to the door frame through a fixed block, the first guide wheel and the second guide wheel are respectively vertically rotatably connected to the upper surface of the rotating block through a rotating shaft, the first guide wheel is located in the bottom guide groove of the door panel, and the second guide wheel is located outside the bottom guide groove. The door panel guide mechanism can limit the moving track of the bottom of the door panel so that it moves synchronously with the top of the door panel.

[0028] Furthermore, an arc guide groove is provided at the bottom edge of the door panel close to the door frame, and when the door panel is closed, the second guide wheel is located in the arc guide groove; when the door panel is opened, the second guide wheel is located outside the arc guide groove.

[0029] Furthermore, a positioning roller is provided at the bottom of the door panel, on the other side opposite to the door panel guide mechanism, and a guide positioning groove matching the positioning roller is provided at the bottom of the door frame. The positioning roller and the guide positioning groove are also provided to limit the moving track of the bottom of the door panel so that it moves synchronously with the top of the door panel.

[0030] Furthermore, if there are two sliding sleeves, the escape door is a double-serra escape door, and the Serra escape door also includes a wire drawing and two wire drawing wheels respectively fixed on the two sets of the coupling drive mechanisms, and the two ends of the wire drawing are respectively passed around the two wire drawing wheels and then connected to one of the sliding sleeves. This Serra escape door can be either a single-serra escape door or a double-serra escape door. The single-serra escape door only needs to add a wire drawing, two wire drawing wheels and a sliding sleeve to become a double-serra escape door.

[0031] Preferably, the slide bar and the pull rod are parallel to each other. This design can realize the slide bar, the pull rod, the two sets of shaft coupling drive mechanisms, the sliding sleeve, the gas spring and the guide wheel to move in and out at the same time.

[0032] Working principle: In this Sierra escape door, the gas spring is always in a compressed state when the door panel is closed. When emergency opening is required, pull the manual unlocking rod, and unlock the unlocking piece of the safety lock by unlocking the wire. At this time, since the Sierra escape door has lost the locking force of the safety lock and the gas spring is in a compressed state, the gas spring will quickly extend and push the sliding sleeve connected to it to one side along the sliding rod, driving the guide wheel to move out of the guide groove. At the same time, the gas spring will also exert a force on the pull rod opposite to the sliding sleeve, driving the pull rod to pull the two side shaft drive mechanisms together with the sliding rod to make a linear motion outside the vehicle; under the above dual action, the sliding sleeve drives the door panel to open through the door carrier.

[0033] Beneficial effects: Bensera escape door has the following advantages:

[0034] (1) Since the gas spring in the Bensera escape door is fixed on the pull rod and its driving end is fixedly connected to the sliding sleeve, when the gas spring pushes the sliding sleeve to slide along the sliding rod to open the door panel, the gas spring will also follow the shaft drive mechanisms on both sides to make a linear motion toward the outside of the vehicle. As a result, the gas spring will not only push the sliding sleeve to move, but also pull the pull rod to move in the opposite direction due to the interaction of forces. As a result, when opening the door panel, the force applied by the gas spring to the sliding sleeve (i.e., the force applied by the gas spring to the guide wheel) will not be applied only to the guide wheel, but will be dispersed to the shaft drive mechanisms on both sides, which can greatly reduce the damage to the guide wheel, save power, and be environmentally friendly.

[0035] (2) Due to the structural setting of the Benserra escape door, the coupling drive mechanisms on both sides, the middle guide wheel, the sliding rod, the pull rod and the gas spring can all move linearly outward from the vehicle in absolute synchronization, so that the forces distributed to the guide wheel and the coupling drive mechanisms on both sides can be balanced at three points, thereby ensuring that the Benserra escape door can be very smooth when closing or opening.

[0036] (3) In the Bensera escape door, under the action of external force, the guide wheel on the escape door can move linearly toward the vehicle synchronously with the sliding bracket. When the door panel is closed under the action of the coupling drive mechanism, the guide wheel is just located in the guide groove. If the power source is the drive cylinder, the above four points are just located in the same straight line at this time. In this way, when the door panel is closed, only a small pulling force needs to be applied to the pull rod to ensure that the above four points do not deviate from the same straight line, which can effectively prevent the guide wheel from sliding out of the guide groove. Under normal vehicle conditions, it has an effective door self-locking effect, saving power and being green and environmentally friendly.

[0037] (4) In an emergency, the Sierra escape door opens to both sides close to the vehicle body, does not take up much space outside the vehicle, is not easily hit by obstacles outside the vehicle, and is easy to open.

[0038] (5) This Sierra escape door can be either a single Sierra escape door or a double Sierra escape door. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 This is the front view of the double Sierra escape door when it is closed;

[0040] Figure 2 This is a top view of the double Sierra escape door when it is closed;

[0041] Figure 3 for Figure 1 A schematic diagram of the enlarged structure within the middle dotted circle;

[0042] Figure 4 This is the front view of the double Sierra escape door when it is open;

[0043] Figure 5 This is a top view of the double Sierra escape door when it is open;

[0044] Figure 6 This is a schematic diagram of the overall structure of the double-serra escape door when it is closed (the gas spring is not shown);

[0045] Figure 7 for Figure 6 Schematic diagram of some structures in ;

[0046] Figure 8 for Figure 7 A schematic diagram of the enlarged structure within the middle dotted circle S1;

[0047] Fig. 9 for Figure 7 A schematic diagram of the enlarged structure within the middle dotted circle S2;

[0048] Fig.10 This is a schematic diagram of the overall structure of the double Sierra escape door when it is open (the gas spring is not shown);

[0049] Fig.11 for Fig.10 Schematic diagram of some structures in ;

[0050] Fig.12 for Fig.11 A schematic diagram of the enlarged structure within the middle dotted circle S1;

[0051] Fig.13 for Fig.11 A schematic diagram of the enlarged structure within the middle dotted circle S2;

[0052] Fig.14 This is a schematic diagram of the overall structure of the double Sierra escape door when it is closed;

[0053] Fig.15 for Fig.14 A schematic diagram of the enlarged structure within the middle dotted circle S1;

[0054] Fig.16 for Fig.14 A schematic diagram of the enlarged structure within the middle dotted circle S2;

[0055] Fig.17 and 18 It is a three-dimensional structural schematic diagram of the door panel guide mechanism;

[0056] Fig.19 This is a top view of part of the structure when the double Sierra escape door is closed;

[0057] Fig. 20 for Fig.19 A partial structural diagram of

[0058] Fig.21This is a top view of part of the structure when the double Sierra escape door is open;

[0059] Fig. 22 for Fig.21 A partial structural diagram of

[0060] Fig.23 It is a top view of the coupling drive mechanism when the door panel is fully closed;

[0061] Fig.24 It is a top view of the coupling drive mechanism when the door panel is half-opened;

[0062] Fig.25 It is a top view of the coupling drive mechanism when the door panel is fully opened;

[0063] Fig.26 This is a cross-sectional view of the middle seam sealing strip assembly after being combined with the door panel;

[0064] Fig. 27 It is a cross-sectional view of the center seam sealing strip assembly;

[0065] Fig.28 It is a cross-sectional view of the side seam sealing strip after being combined with the door panel and door frame;

[0066] Fig.29 It is a cross-sectional view of the side seam sealing strip;

[0067] Fig.30 A cross-sectional view of the sealing strip in the position after it is combined with the door panel and the door frame; wherein, the base 1, the bracket guide groove 101, the guide groove 102, the roller guide groove 103, the shaft drive mechanism 2, the sliding bracket 201, the drive arm 202, the connecting arm 203, the limit block 204, the adjustment bolt 205, the slide rod 3, the pull rod 4, the sliding sleeve 5, the drawing 6, the drawing wheel 7, the guide wheel 8, the driving cylinder 9, the door frame 10, the door panel 11, the bottom guide groove 1101, the arc guide groove 1102, the positioning roller 1103, the sliding roller 12, the slide rail 13, the guide wheel or the guide block 14, the door panel guide mechanism 15, the rotating block 1501, the first guide wheel 1502, the second guide wheel 1 503, fixed block 1504, inner sealing rubber strip 16, middle seam sealing rubber strip 18, rubber strip body 1801, mortise and tenon groove 1802, mortise and tenon protrusion 1803, middle seam water guide strip 1804, middle seam door panel claw 1805, middle seam outer sealing edge 1806, middle seam inner sealing edge 1807, hollow cavity 1808, side seam sealing rubber strip 19, side seam door panel claw 1901, door panel sealing edge 1902, door frame sealing edge 1903, side seam water guide strip 1904, buffer hollow cavity 1905, door frame 20, guide positioning groove 2001, gas spring 21, pneumatic unlocking cylinder 22, unlocking wire 23, manual unlocking rod 24, safety lock 25. DETAILED DESCRIPTION

[0068] The present invention is described in detail below in conjunction with the accompanying drawings.

[0069] Implementation 1:

[0070] This embodiment provides a double-slip escape door. Figures 1 to 11 As shown in 19 to 25, it mainly consists of a base 1 fixed on a door frame 20, two sets of coupling drive mechanisms 2, a sliding rod 3, a pull rod 4, two sliding sleeves 5, a wire drawing 6, two wire drawing wheels 7, a guide wheel 8, a gas spring 21, two door carrying frames 10, two door panels 11, four safety locks 25 and a manual unlocking pull rod 24.

[0071] Two sets of shaft coupling drive mechanisms 2 are respectively installed at both ends of the upper part of the base 1. The two sets of shaft coupling drive mechanisms 2 are mainly composed of a sliding bracket 201, a driving arm 202 and a connecting arm 203. The sliding bracket 201 in the two sets of shaft coupling drive mechanisms 2 is fixedly connected by a sliding rod 3, and the driving arm 202 is rotatably connected by a pull rod 4. The sliding rod 3 and the pull rod 4 are parallel to each other. In the two sets of shaft coupling drive mechanisms 2, the sliding bracket 201 in one set is installed on the base 1 through a guide mechanism, and can reciprocate relative to the base 1 under the action of external force and the guide mechanism; the guide mechanism is a guide wheel or a guide block 14, which is installed on the sliding bracket 201, and the guide wheel or the guide block 14 is limited in the waist-shaped bracket guide groove 101 opened on the base 1; under the driving of external force and the guiding action of the bracket guide groove 101, the guide wheel or the guide block 14 can reciprocate in the bracket guide groove 101. One side of the sliding bracket 201 in the two sets of shaft coupling drive mechanisms 2 is also respectively installed with a sliding roller 12, and the sliding roller 12 cooperates with the U-shaped slide rail 13 set on the base 1. One end of the driving arm 202 in the shaft coupling drive mechanism 2 is rotatably connected to the base 1, and the other end is rotatably connected to the pull rod 4; one end of the connecting arm 203 is rotatably connected to the middle part of the driving arm 202, and the other end is rotatably connected to the sliding bracket 201. The set of shaft coupling drive mechanisms 2 near the guide wheel 8 also includes a limit block 204 fixed to the base 1 by an adjusting bolt 205, and the limit block 204 and the pull rod 4 are respectively located on both sides of the driving arm 202.

[0072] When the rotation connection point between the pull rod 4 and the driving arm 202 moves to one side to the extreme position, the limit block 204 presses against one side of the rotation connection point between the driving arm 202 and the pull rod 4; at this time, the rotation connection point between the pull rod 4 and the driving arm 202, the rotation connection point between the driving arm 202 and the base 1, the rotation connection point between the driving arm 202 and the connecting arm 203, and the rotation connection point between the connecting arm 203 and the sliding bracket 201 are located on the same straight line; when the rotation connection point between the pull rod 4 and the driving arm 202 moves to the other side to the extreme position, the limit block 204 and the driving arm 202 do not contact each other.

[0073] Two sliding sleeves 5 are sleeved on the slide bar 3, and the two ends of the wire drawing 6 are connected to the two sliding sleeves 5 after passing through the two wire drawing wheels 7 fixed on the two sliding brackets 201; the guide wheel 8 rotatably connected to one of the sliding sleeves 5 is limited in the guide groove 102 on the base 1, and the two sliding sleeves 5 are respectively fixedly connected to the door panels 11 through the door carrying frame 10; the gas spring 21 is fixed on the pull rod 4, and its telescopic end is fixedly connected to the sliding sleeve 5 connected to the guide wheel 8. The manually unlocked safety locks 25 are respectively installed on both sides of the two door panels 11, and the manual unlocking pull rod 24 is fixed on the inner wall of the carriage. The manual unlocking pull rod 24 is connected to the unlocking piece of the safety lock 25 through the unlocking wire 23.

[0074] The working principle of the Sierra escape door in this embodiment is as follows:

[0075] When the Sierra escape door needs to be opened in an emergency, the manual unlocking rod 24 is pulled, and the unlocking piece of the safety lock 25 is pulled to unlock through the unlocking wire 23. At this time, since the Sierra escape door loses the locking force of the safety lock 25, and the gas spring 21 is always in a compressed state when the door panel 11 is closed, the gas spring 21 will quickly extend along the slide rod 3 to push the sliding sleeve 5 connected to it. The sliding sleeves 5 on both sides slide toward each other along the slide rod 3 under the action of the wire 6, and then the guide wheel 8 follows the sliding sleeve 5 and moves out of the guide groove 102 under the guidance of the guide groove 102. At the same time, the gas spring 21 will also have a force on the pull rod 4 that is opposite to the sliding sleeve 5, driving the pull rod 4 to pull the two side coupling drive mechanisms 2 together with the slide rod 3 to move linearly toward the outside of the vehicle. The specific process is as follows:

[0076] The gas spring 21 drives the rotation connection point between the pull rod 4 and the driving arm 202 in the two-side coupling drive mechanism 2 to move away from the rotation connection point between the connecting arm 203 and the sliding bracket 201, so that the driving arm 202 rotates counterclockwise around the rotation connection point between it and the base 1, and the connecting arm 203 rotates clockwise around the rotation connection point between it and the driving arm 202, thereby forcing the sliding bracket 201 in the one-side coupling drive mechanism 2 to be guided by the guide wheel 14 and the bracket guide groove 101 and the sliding roller 12 and the slide rail 13, and the sliding bracket 201 in the other-side coupling drive mechanism 2 to be guided by the sliding roller 12 and the slide rail 13. It moves linearly toward the outside of the vehicle relative to the bracket guide groove 101; the guide wheel 8 and the door carrying frame 10 arranged on the sliding sleeve 5 move along the sliding rod 3 together with the sliding sleeve 5, and the sliding rod 3 and the pull rod 4 are connected with the sliding brackets 201 on both sides. Therefore, when the sliding bracket 201 moves to the extreme position of the bracket guide groove 101 close to the outside of the vehicle, the sliding rod 3, the pull rod 4, the gas spring 21, the sliding sleeve 5 and the guide wheel 8 and the door carrying frame 10 thereon, as well as the door panels 11 on both sides fixed under the door carrying frame 10 will all move linearly toward the outside of the vehicle together with the sliding bracket 201. Under the above dual effects, the door panels 11 on both sides are opened.

[0077] Implementation 2:

[0078] This embodiment is a further improvement of the embodiment 1, and the main improvement is that in the embodiment 1, when the emergency situation is over and the opened double-saddle safety door needs to be closed, the escape doors on both sides need to be manually pushed to the middle to close, and then the four safety locks 25 on both sides need to be relocked; because the escape door is in the emergency opening state by the gas spring 21, the gas spring 21 is always in an extended state, if the escape doors on both sides are manually pushed to the middle to close the escape door, it is very time-consuming and laborious, and the operation is difficult. In this embodiment, the above defects can be effectively overcome.

[0079] Specifically, the double-spool safety door in the present embodiment also includes a driving cylinder, which is fixed on the pull rod, and its telescopic end is fixedly connected to the sliding sleeve 5 connected to the guide wheel 8. After the Spool escape door is opened by the gas spring 21, the telescopic end of the driving cylinder 9 will also be stretched due to the fixed connection with the sliding sleeve 5. When the escape door needs to be closed, the driving cylinder 9 can be started, and its telescopic end will compress and pull the sliding sleeve 5 connected to the guide wheel 8, so that the sliding sleeve 5 returns to the guide groove 102 along the slide rod 3 with the guide wheel. In this process, the driving cylinder 9 needs to overcome the elastic force of the gas spring 21 all the time and compress the gas spring 21 to the initial state (closed door state). The escape door is automatically closed by the driving cylinder 9, which greatly saves manpower. The specific process is as follows:

[0080] The sliding sleeve 5 connected to the guide wheel 8 is pulled to slide along the slide bar 3 by the contraction of the telescopic end of the driving cylinder 9. The sliding sleeves 5 on both sides slide relatively along the slide bar 3 under the action of the wire drawing 6 and the wire drawing wheel 7, and then the guide wheel 8 follows the sliding sleeve 5 and moves into the guide groove 102 under the guidance of the guide groove 102. At the same time, the movement of the sliding sleeve 5 connected to the guide wheel 8 will compress the gas spring 21, and the driving cylinder 9 will also exert a force on the pull rod 4 opposite to that on the sliding sleeve 5 connected to the guide wheel 8, driving the pull rod 4 to push the two-side coupling drive mechanism 2 together with the slide bar 3 to move linearly toward the inner side of the vehicle. The specific process is as follows:

[0081] The driving cylinder 9 drives the rotation connection point between the pull rod 4 and the driving arm 202 in the two-side coupling driving mechanism 2 to approach the rotation connection point between the connecting arm 203 and the sliding bracket 201, so that the driving arm 202 rotates clockwise around the rotation connection point between it and the base 1, and the connecting arm 203 rotates counterclockwise around the rotation connection point between it and the driving arm 202, thereby forcing the sliding bracket 201 in the one side coupling driving mechanism 2 to move under the dual guidance of the guide wheel 14 and the bracket guide groove 101 and the sliding roller 12 and the slide rail 13. The sliding bracket 201 in the shaft driving mechanism 2 on the other side moves linearly toward the inside of the vehicle relative to the bracket guide groove 101 under the action of the sliding roller 12 and the slide rail 13; when the sliding bracket 201 moves to the limit position of the bracket guide groove 101 close to the inside of the vehicle, the sliding rod 3, the pull rod 4, the driving cylinder 9, the sliding sleeve 5 and the guide wheel 8 thereon and the door carrying frame 10, as well as the door panels 11 on both sides fixed below the door carrying frame 10 will all move linearly toward the inside of the vehicle together with the sliding bracket 201. Under the above dual action, the door panels 11 on both sides are closed. At this time, the gas spring 21 is in the initial compression state, and then the four safety locks 25 on both sides can be re-locked.

[0082] In the above process, when the guide wheel 14 of the sliding bracket 201 moves to the extreme position of the bracket guide groove 101 close to the outer side of the vehicle, the shaft driving mechanisms 2 on both sides are in a self-locking state. At this time, the rotation connection point between the pull rod 4 and the driving arm 202, the rotation connection point between the driving arm 202 and the base 1, the rotation connection point between the driving arm 202 and the connecting arm 203, and the rotation connection point between the connecting arm 203 and the sliding bracket 201 are all located on the same straight line, and the limit block 204 just presses against one side of the rotation connection point between the pull rod 4 and the driving arm 202. At this time, even if the pull rod is released, the pull rod 4 and the driving arm 202 will not be locked. The external force of the driving cylinder 9 on the rod 4, the above four points are located in the same straight line and will not easily deviate from the straight line. In this way, when the door panel 11 is closed, the pulling force of the driving cylinder 9 can be released, or the driving cylinder 9 only needs to apply a smaller pulling force to ensure that the above four points do not deviate from the same straight line. In order to prevent the door panels on both sides from being reopened due to the elastic force of the gas spring 21, safety locks 25 are installed on both sides of the door panels of the Sierra escape door to further fix the door panels 11 on both sides, which can effectively prevent the guide wheel 8 from slipping out of the guide groove 102 and prevent the car door from opening automatically.

[0083] Since the driving cylinder 9 in the Bensera escape door is fixed on the pull rod 4 and its driving end is fixedly connected to the sliding sleeve 5, when the driving cylinder 9 pulls or the gas spring 21 pushes the sliding sleeve 5 on one side to slide the sliding sleeves 5 on both sides relative to or toward each other along the sliding rod 3 to close or open the door panel 11, the driving cylinder 9 and the gas spring 21 will also follow the sliding brackets 201 in the shaft driving mechanism 2 on both sides to make reciprocating motion relative to the base 1, so that when the driving cylinder 9 or the gas spring 21 pulls or pushes the sliding sleeve 5 to move, according to the interaction of forces, the driving cylinder 9 or the gas spring 21 will also pull or push the pull rod 4 to move in the opposite direction. This means that when closing or opening the door panels 11 on both sides, the force applied by the drive cylinder 9 or the gas spring 21 to the sliding sleeve 5 (i.e., the force applied by the drive cylinder 9 or the gas spring 21 to the guide wheel 8) will not be applied only to the guide wheel 8, but will also be dispersed to the coupling drive mechanisms 2 on both sides. Due to the structural setting of the Bensela escape door, the coupling drive mechanisms 2 on both sides, the guide wheel 8 in the middle, the sliding rod 3, the pull rod 4, the drive cylinder 9 and the gas spring 21 can all reciprocate relative to the base 1 at the same time, so that the force dispersed to the guide wheel 8 and the coupling drive mechanisms 2 on both sides can be balanced at three points, thereby ensuring that the Bensela door can be very stable when closed or opened.

[0084] Apart from this, this embodiment is completely the same as Embodiment 1 and will not be described in detail here.

[0085] Implementation 3:

[0086] The present embodiment is a further improvement of the embodiment 2, and the main improvement is that in the embodiment 2, when the emergency situation is over, it is necessary to first manually pull the manual unlocking rod, and after the safety lock 25 is unlocked by pulling the unlocking piece of the safety lock 25 through the unlocking wire 23, the gas spring 21 can quickly extend to open the door panel. The pulling of the manual unlocking rod requires manpower. If an elderly person or a child who has no strength is encountered, it is not easy to pull it open, and it is easy to lose the best escape opportunity. Therefore, in the present embodiment, a pneumatic unlocking cylinder 22 is also installed on the inner wall of the car body of the double-saddle escape door, and the telescopic end of the pneumatic unlocking cylinder 22 is connected to the unlocking piece of each safety lock 25 through the unlocking wire 23.

[0087] The setting of the pneumatic unlocking cylinder 22 allows the safety lock 25 to be opened pneumatically. The operation is to simply touch the opening button of the pneumatic unlocking cylinder 22. After the pneumatic unlocking cylinder 22 is ventilated, the unlocking piece of the safety lock 25 can be automatically pulled through the unlocking wire 23, and it can be easily unlocked without pulling the manual unlocking rod 24.

[0088] Apart from this, this embodiment is exactly the same as Embodiment 2 and will not be described in detail here.

[0089] Implementation 4:

[0090] This embodiment provides a single-sleeper escape door, which has roughly the same structure as the double-sleeper escape door in Embodiment 1. Only one sliding sleeve 5, the wire drawing 6 and the two wire drawing wheels 7 in the double-sleeper escape door need to be removed. The remaining structure and working principle are exactly the same and will not be elaborated here.

[0091] Implementation 5:

[0092] This embodiment is a further improvement of embodiment 1, and the main improvement is that in the Sierra escape door in embodiment 1, only the top ends of the door panels 11 on both sides enter the guide groove 102 for positioning through the guide wheel 8, and there is no positioning mechanism at the bottom end of the door panels 11, which will cause the bottom end of the door panels 11 to shake easily when the vehicle encounters bumpy conditions during driving. In this embodiment, a door panel guide mechanism 1515 for positioning the bottom ends of the door panels 11 on both sides is added to the Sierra escape door, which can limit the moving trajectory of the bottom end of the door panel 11, so that it moves synchronously with the top end of the door panel 11, and effectively avoids the situation where the bottom ends of the door panels 11 on both sides shake unsteadily during driving.

[0093] Specifically, if Figure 1 , 3 , 4, 6, 9, 10, 14, 17 and 18, in the Sierra escape door of this embodiment, a door panel guide mechanism 15 consisting of a rotating block 1501, a first guide wheel 1502 and a second guide wheel 1503 is also provided on one side of the bottom of the door panel 11, one end of the rotating block 1501 is horizontally rotatably connected to the door frame 20 through a fixed block 1504, the first guide wheel 1502 and the second guide wheel 1503 are respectively vertically rotatably connected to the upper surface of the rotating block 1501 through a rotating shaft, the first guide wheel 1502 is located in the bottom guide groove 1101 of the door panel, and the second guide wheel 1503 is located outside the bottom guide groove 1101. An arc guide groove 1102 is also provided at the bottom edge of the door panel 11 close to the door frame 20, when the door panel 11 is closed, the second guide wheel 1503 is located in the arc guide groove 1102; when the door panel 11 is opened, the second guide wheel 1503 is located outside the arc guide groove 1102.

[0094] When the door panel 11 is closed, the first guide wheel 1502 and the second guide wheel 1503 roll inside and outside along the bottom guide groove 1101 respectively, forcing the rotating block 1501 to rotate, and the first guide wheel 1502 pulls the bottom of the door panel 11 to move into the car. When the door panel 11 is opened, the first guide wheel 1502 pushes the bottom of the door panel 11 to move out of the car, which can limit the moving trajectory of the bottom of the door panel 11 and keep it in sync with the top of the door panel 11, effectively avoiding the shaking and instability of the bottom ends of the door panels 11 on both sides during driving.

[0095] In addition, in order to further limit the moving track of the bottom of the door panel 11, so that it keeps moving synchronously with the top of the door panel 11, and avoid the bottom ends of the door panels 11 on both sides shaking and being unstable during driving, in this embodiment, a positioning roller 1103 is further provided at the bottom of the door panel 11, on the other side opposite to the door panel guide mechanism 15, and a guide positioning groove 2001 matching the positioning roller 1103 is provided at the bottom of the door frame 20. When the door panel 11 is closed, the positioning roller 1103 is located in the guide positioning groove 2001, and when the door panel 11 is opened, the positioning roller 1103 moves out of the guide positioning groove 2001.

[0096] Apart from this, this embodiment is completely the same as Embodiment 1 and will not be described in detail here.

[0097] Implementation 6:

[0098] This embodiment is a further improvement of the embodiment 5, and the main improvement is that in the Sierra escape door in the embodiment 5, after the two side door panels 11 are closed, there is a certain gap between the two side door panels 11 and between the two side door panels 11 and the door frame 20, resulting in insufficient sealing. In windy and rainy weather, wind or rain can easily enter the vehicle through the gap. In addition, the gap will also cause the two side door panels 11 to shake unsteadily during the driving of the vehicle. In this embodiment, the above problems are effectively solved by adding a middle seam sealing strip 18 and a side seam sealing strip 19.

[0099] Specifically, if Figures 26 to 29 In the Sierra escape door of this embodiment, the opposite side edges of the two door panels 11 are respectively installed with a middle seam sealing strip 18, and the opposite side edges and the upper and lower side edges are respectively installed with a side seam sealing strip 19 (to achieve external sealing) or an inner sealing strip 16 (to achieve internal sealing, such as Fig.30, one side is clamped in the profile on the inner side of the door panel 11 by a claw, and the other side is squeezed between the door frame 20 to achieve a sealed state when the door is closed); after closing the door panels 11 on both sides, the middle seam sealing strips 18 on the door panels 11 on both sides are sealed with each other, and the side seam sealing strips 19 on the door panels 11 on both sides are respectively sealed with the door frames 20 on both sides and the top base 1. The opposite sides of the strip bodies 1801 of the center seam sealing strips 18 on both sides are respectively provided with mortise and tenon grooves 1802 and mortise and tenon protrusions 1803 for mortise and tenon matching, and the mortise and tenon protrusions 1803 have a hollow cavity 1808. The mortise and tenon grooves 1802 of the strip body 1801 on one side are arranged opposite to the mortise and tenon protrusions 1803 of the strip body 1801 on the other side, and the ends of the mortise and tenon grooves 1802 of the strip bodies 1801 on both sides are also respectively provided with center seam water guide strips 1804; the opposite sides of the two strip bodies 1801 are respectively provided with center seam door panel claws 1805 for clamping in the door panel 11 profiles on both sides, and the opposite outer walls are also respectively provided with center seam outer sealing edges 1806, and the opposite inner walls are also respectively provided with center seam inner sealing edges 1807. A side seam door panel claw 1901 for clamping in the door panel 11 profile is provided on the side of the side seam sealing strip 19 opposite to the door panel 11, and a door panel sealing edge 1902 is also provided on the outer wall of the side seam sealing strip 19 located on the same side as the side seam door panel claw 1901; a door frame sealing edge 1903 is provided on the outer side of the side of the side of the side sealing strip 19 opposite to the door frame 20, and a side seam water guide strip 1904 is provided on the inner wall of the side opposite to the door frame 20; a buffer hollow cavity 1905 is provided in the side seam sealing strip 19.

[0100] When installing the center seam sealing strip 18 on the door panels 11 on both sides, just clamp the center seam door panel claw 1805 on one side of the strip body 1801 on both sides into the profile on the opposite side of the door panels 11 on both sides. When installing the side seam sealing strip 19, just clamp the side seam door panel claw 1901 on one side into the profile of the door panel 11.

[0101] When the door panels 11 on both sides are closed, the mortise and tenon grooves 1802 and the mortise and tenon protrusions 1803 in the above-mentioned center seam sealing strip 18 are mortise and tenoned and squeezed together, and the center seam water guide strip 1804 can promptly guide rainwater entering from the outside of the vehicle through the gap between the strip bodies 1801 on both sides to the bottom of the door panel 11 to flow out, and the center seam outer sealing edge 1806 effectively seals the gap between the center seam sealing strip 18 and the outer wall plane of the door panel 11, and the center seam inner sealing edge 1807 effectively seals the gap between the center seam sealing strip 18 and the inner wall plane of the door panel 11. The door panel sealing edge 1902 in the above-mentioned side seam sealing strip 19 effectively seals the gap between the side seam sealing strip 19 and the outer wall plane of the door panel 11, the door frame sealing edge 1903 effectively seals the gap between the side seam sealing strip 19 and the outer wall plane of the door frame 20 and the base 1, and the side seam water guide strip 1904 can guide rainwater entering from outside the vehicle through the gap between the side seam sealing strip 19 and the door frame 20 to the bottom of the door panel 11 to flow out in time.

[0102] The coordinated use of the center seam sealing strip 18 and the side seam sealing strip 19 enables the Bencella escape door to effectively seal the door panel 11 after the door panel 11 is closed, thereby preventing the door panel 11 from shaking, being exposed to wind, rain, etc. during vehicle operation.

[0103] Apart from this, this embodiment is exactly the same as embodiment 5 and will not be described in detail here.

[0104] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent transformation or modification made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A Sierra escape door, characterized in that: The cam is connected with the base by a plurality of sliding bearings, and the sliding bearings are connected with the plurality of sliding bearings respectively. At least one manually unlocked safety lock is also installed on both sides of the door panel. The manual unlocking rod of the safety lock is fixed to the inner wall of the vehicle compartment, and the unlocking piece is connected to the manual unlocking rod through an unlocking wire. When unlocking is required, the manual unlocking rod is pulled, and the unlocking piece is unlocked by pulling the unlocking wire.

2. The Sierra escape door according to claim 1, characterized in that: In the two groups of the coupling drive mechanisms, the sliding bracket in at least one group is installed on the base through a guide mechanism, and can reciprocate relative to the base under the action of external force and the guide mechanism; one end of the driving arm is rotationally connected to the base, and the other end is rotationally connected to the pull rod; one end of the connecting arm is rotationally connected to the middle part of the driving arm, and the other end is rotationally connected to the sliding bracket.

3. The Sierra escape door according to claim 2, characterized in that: The guide mechanism is a guide wheel or a guide block, which is installed on the sliding bracket and is limited in a bracket guide groove opened on the base; under the driving of the external force and the guiding action of the bracket guide groove, the guide wheel or the guide block can reciprocate in the bracket guide groove.

4. The Sierra escape door according to claim 3, characterized in that: The support guide groove is a waist-shaped groove.

5. The Sierra escape door according to claim 2, characterized in that: A group of the coupling drive mechanisms near the guide wheel also includes a limit block, the limit block is fixed on the base, and the limit block and the pull rod are respectively located on both sides of the drive arm; When the rotation connection point between the pull rod and the driving arm moves to one side to an extreme position, the limit block abuts against one side of the rotation connection point between the driving arm and the pull rod; When the rotation connection point between the pull rod and the driving arm moves to the other side to the limit position, the limit block and the driving arm do not contact each other.

6. The Sierra escape door according to claim 5, characterized in that: The limit block is fixedly connected to the base through an adjusting bolt.

7. The Sierra escape door according to claim 1, characterized in that: One side of the sliding bracket in the two sets of the coupling drive mechanisms is also respectively installed with a sliding roller, and the sliding roller cooperates with the sliding rail arranged on the base.

8. The Sierra escape door according to claim 7, characterized in that: The slide rail is a U-shaped slide rail.

9. The Sierra escape door according to claim 1, characterized in that: If there are two sliding sleeves, there are two door panels, and the opposite side edges of the two door panels are respectively installed with center seam sealing strips, and the opposite side edges and the upper and lower side edges are respectively installed with side seam sealing strips; after closing the door panels on both sides, the center seam sealing strips on the door panels on both sides are sealed with mortise and tenon joints, and the side seam sealing strips on the door panels on both sides are respectively sealed with the door frames on both sides; If there is one sliding sleeve, there is one door panel, and the four side edges of the door panel are all installed with the side seam sealing strips; after closing the door panel, the side seam sealing strips respectively cooperate with the door frames on the four sides of the door panel to seal.

10. The Sierra escape door according to claim 9, characterized in that: The opposite sides of the strip bodies of the center seam sealing strips on both sides are respectively provided with mortise and tenon grooves and mortise and tenon protrusions for mortise and tenon matching, the mortise and tenon grooves of the strip body on one side are arranged opposite to the mortise and tenon protrusions of the strip body on the other side, and the opposite sides of the two strip bodies are respectively provided with center seam door panel claws for clamping in the door panel profiles on both sides.

11. The Sierra escape door according to claim 10, characterized in that: The ends of the mortise and tenon grooves of the rubber strip bodies on both sides are also respectively provided with middle seam water guide strips.

12. The Sierra escape door according to claim 10, characterized in that: The outer walls of the rubber strip bodies at both sides which are opposite to each other are also provided with middle seam outer sealing edges respectively.

13. The Sierra escape door according to claim 10, characterized in that: The inner walls of the rubber strip bodies at both sides which are opposite to each other are also provided with inner sealing edges of the middle seam.

14. The Sierra escape door according to claim 9, characterized in that: The side of the side seam sealing rubber strip opposite to the door panel is provided with a side seam door panel clamping claw for clamping in the door panel profile.

15. The Sierra escape door according to claim 14, characterized in that: The outer wall of the side seam sealing strip located on the same side as the side seam door panel clamping claw is also provided with a door panel sealing edge.

16. The Sierra escape door according to claim 14, characterized in that: A door frame sealing edge is arranged on the outer side of the side seam sealing rubber strip opposite to the door frame.

17. The Sierra escape door according to claim 14, characterized in that: The inner wall of the side seam sealing rubber strip opposite to the door frame is provided with a side seam water guide strip.

18. The Sierra escape door according to claim 14, characterized in that: A buffer hollow cavity is arranged in the side seam sealing rubber strip.

19. The Sierra escape door according to any one of claims 1 to 18, characterized in that: It also includes a pneumatic unlocking cylinder installed on the door frame, and the telescopic end of the pneumatic unlocking cylinder is connected to the unlocking piece of each safety lock through an unlocking wire.

20. The Sierra escape door according to any one of claims 1 to 18, characterized in that: It also includes a driving cylinder, which is fixed on the pull rod and has a telescopic end fixedly connected to a sliding sleeve connected to the guide wheel.

21. The Sierra escape door according to any one of claims 1 to 18, characterized in that: A door panel guide mechanism consisting of a rotating block, a first guide wheel and a second guide wheel is also provided on one side of the bottom of the door panel, one end of the rotating block is horizontally rotatably connected to the door frame through a fixed block, the first guide wheel and the second guide wheel are vertically rotatably connected to the upper surface of the rotating block through a rotating shaft respectively, the first guide wheel is located in the bottom guide groove of the door panel, and the second guide wheel is located outside the bottom guide groove.

22. The Sierra escape door according to claim 21, characterized in that: An arc guide groove is also arranged at the bottom edge of the door panel close to the door frame. When the door panel is closed, the second guide wheel is located in the arc guide groove; when the door panel is opened, the second guide wheel is located outside the arc guide groove.

23. The Sierra escape door according to claim 21, characterized in that: A positioning roller is also arranged at the bottom of the door panel and at the other side opposite to the door panel guide mechanism, and a guide positioning groove matching with the positioning roller is arranged at the bottom of the door frame.

24. The Sierra escape door according to any one of claims 1 to 18, characterized in that: If there are two sliding sleeves, the escape door is a double-Serra escape door, and the Serra escape door also includes a wire drawing and two wire drawing wheels respectively fixed on the two groups of the coupling drive mechanisms. The two ends of the wire drawing are respectively passed around the two wire drawing wheels and then connected to one of the sliding sleeves.

25. The Sierra escape door according to any one of claims 1 to 18, characterized in that: The sliding rod and the pulling rod are parallel to each other.

Images