Door limiting device and aircraft

Abstract

The present invention discloses a door limit device and an aircraft, and relates to the field of aviation technology. The door limit device includes a cabin body, a sliding cabin door, a cabin door and a limit mechanism installed on the cabin body. The sliding cabin door is slidably connected to the cabin body, and the sliding cabin door can be slid open in a direction close to the cabin door. The limit mechanism is arranged between the sliding cabin door and the cabin door, and is connected to the cabin door. The limit mechanism can extend out of the cabin body when the cabin door is opened to stop and limit the sliding cabin door to prevent the sliding cabin door from colliding with the cabin door. Compared with the prior art, the door limit device provided by the present invention adopts a limit mechanism connected to the cabin door and arranged between the sliding cabin door and the cabin door, so it can stop and limit the sliding cabin door when the cabin door is opened to prevent the sliding cabin door from colliding with the cabin door, and is practical and reliable.

Description

Technical Field

[0001] The present invention relates to the field of aviation technology, and in particular to a door limiting device and an aircraft. Background Art

[0002] At present, most aircraft (such as helicopters) are provided with sliding doors and cabin doors on the sides of the fuselage. However, the sliding door and the cabin door are currently located on the same side of the fuselage. When the sliding door is opened, it will cover the outside of the cabin door. As a result, the sliding door is likely to interfere with the cabin door. When the cabin door is in the open state, if the sliding door is opened again, the sliding door and the cabin door will collide, thereby causing damage to the two doors and even leading to the occurrence of safety accidents.

[0003] In view of this, it is particularly important to design and manufacture a door limit device and an aircraft capable of performing stop limit, especially in industrial production. Summary of the invention

[0004] The object of the present invention is to provide a door limiting device, which can stop and limit the sliding door when the passenger door is opened to prevent the sliding door from colliding with the passenger door, and is practical and reliable.

[0005] Another object of the present invention is to provide an aircraft that can stop and limit the sliding door when the cabin door is open to prevent the sliding door from colliding with the cabin door, which is practical, reliable and safe.

[0006] The present invention is achieved by adopting the following technical solutions.

[0007] A door limiting device comprises a cabin body, a sliding cabin door, a cabin door and a limiting mechanism installed on the cabin body, wherein the sliding cabin door is slidably connected to the cabin body and can be slid open in a direction close to the cabin door, the limiting mechanism is arranged between the sliding cabin door and the cabin door and connected to the cabin door, and the limiting mechanism can extend out of the cabin body when the cabin door is opened to stop and limit the sliding cabin door to prevent the sliding cabin door from colliding with the cabin door.

[0008] Furthermore, the limiting mechanism includes a locking pin assembly, a transmission rope and a limiting assembly. The locking pin assembly and the limiting assembly are both installed on the cabin body. The locking pin assembly is connected to the limiting assembly through the transmission rope. The limiting assembly is arranged between the sliding cabin door and the cabin door. The locking pin assembly can drive the limiting assembly to extend out of the cabin body through the transmission rope when the cabin door is opened.

[0009] Furthermore, the limit assembly includes an outer shell, a stopper, a clamping member and a first torsion spring. A first rotating shaft and a second rotating shaft are spaced apart in the outer shell. The stopper is sleeved outside the first rotating shaft and can rotate relative to the first rotating shaft. The first torsion spring is sleeved outside the first rotating shaft. One end of the first torsion spring abuts against the stopper, and the other end abuts against the outer shell. The clamping member is sleeved outside the second rotating shaft and can rotate relative to the second rotating shaft. The clamping member is connected to the transmission rope and clamped with the stopper. The first torsion spring can drive the stopper to extend out of the cabin when the transmission rope pulls the clamping member to disengage from the stopper.

[0010] Furthermore, the holding member includes a hook portion, a connecting portion and a pressing portion, the hook portion is fixedly connected to the pressing portion through the connecting portion, the hook portion is connected to the transmission rope and is engaged with the stop member, the connecting portion is sleeved outside the second rotating shaft, and the pressing portion is used to manually control the hook portion to disengage from the stop member.

[0011] Furthermore, a first limit column is provided in the shell, and the stop member is provided with a first limit groove and a second limit groove. The first limit column can be embedded in the first limit groove when the first torsion spring drives the stop member to rotate to the first limit position, and the first limit column can also be embedded in the second limit groove when the stop member overcomes the elastic force of the first torsion spring and rotates to the second limit position.

[0012] Furthermore, the limiting assembly also includes a second torsion spring, which is sleeved outside the second rotating shaft, one end of the second torsion spring abuts against the clamping member, and the other end of the second torsion spring abuts against the housing.

[0013] Furthermore, a limiting portion and a second limiting column are provided in the shell. The limiting portion can abut against the clamping member when the second torsion spring drives the clamping member to rotate to the third limit position. The second limiting column can abut against the clamping member when the clamping member overcomes the elastic force of the second torsion spring and rotates to the fourth limit position.

[0014] Furthermore, the lock pin assembly includes a lock pin member, a return spring and a fixing frame, the fixing frame is fixedly connected to the cabin body, the lock pin member passes through the fixing frame and can slide relative to the fixing frame, one end of the lock pin member is connected to the transmission rope, and the other end is abutted against the cabin door, the lock pin member is provided with a supporting portion, the return spring is sleeved outside the lock pin member, one end of the return spring is abutted against the fixing frame, and the other end is abutted against the supporting portion, and the return spring can pull the transmission rope to move through the lock pin member when the cabin door is opened.

[0015] Furthermore, the cabin door is provided with a hinge, which is hinged to the cabin body, and an anti-collision head is provided at one end of the lock pin away from the transmission rope, and the hinge abuts against the anti-collision head.

[0016] An aircraft comprises the above-mentioned cabin door limiting device, which comprises a cabin body and a sliding cabin door, a cabin door and a limiting mechanism installed on the cabin body. The sliding cabin door is slidably connected to the cabin body, and the sliding cabin door can be slid open in a direction close to the cabin door. The limiting mechanism is arranged between the sliding cabin door and the cabin door and is connected to the cabin door. The limiting mechanism can extend out of the cabin body when the cabin door is opened to stop and limit the sliding cabin door to prevent the sliding cabin door from colliding with the cabin door.

[0017] The door limiting device and the aircraft provided by the present invention have the following beneficial effects:

[0018] The door limiter provided by the present invention has a sliding door connected to a cabin body in a sliding manner, the sliding door can slide open in a direction close to a passenger cabin door, a limiter mechanism is arranged between the sliding door and the passenger cabin door, and is connected to the passenger cabin door, and the limiter mechanism can extend out of the cabin body when the passenger cabin door is opened to stop and limit the sliding door to prevent the sliding door from colliding with the passenger cabin door. Compared with the prior art, the door limiter provided by the present invention adopts a limiter mechanism connected to the passenger cabin door and arranged between the sliding door and the passenger cabin door, so it can stop and limit the sliding door when the passenger cabin door is opened to prevent the sliding door from colliding with the passenger cabin door, and is practical and reliable.

[0019] The aircraft provided by the present invention comprises a door limiting device, which can stop and limit the sliding door when the cabin door is opened to prevent the sliding door from colliding with the cabin door. The aircraft is practical, reliable and highly safe. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 A schematic diagram of the structure of a door limiting device provided in an embodiment of the present invention;

[0022] Figure 2 A schematic diagram of the structure in which the limiting mechanism of the door limiting device provided by an embodiment of the present invention is installed on the cabin body;

[0023] Figure 3 A schematic diagram of the structure of a limiting mechanism in a door limiting device provided in an embodiment of the present invention;

[0024] Figure 4 for Figure 2 A schematic diagram of the structure of the middle limit assembly from the first perspective;

[0025] Figure 5 for Figure 2 A schematic diagram of the structure of the middle limit assembly from a second viewing angle;

[0026] Figure 6 for Figure 2 A schematic diagram of the structure of the middle limit assembly from a third perspective;

[0027] Figure 7 for Figure 2 A schematic diagram of the structure of the middle locking pin assembly;

[0028] Figure 8 A schematic diagram of the structure of the cabin door and the lock pin assembly abutting against each other in the door limiting device provided in an embodiment of the present invention.

[0029] Icons: 100-cabin door limit device; 110-cabin body; 120-sliding door; 130-cabin door; 131-hinge; 140-limiting mechanism; 141-locking pin assembly; 142-transmission rope; 143-limiting assembly; 144-housing; 145-stopper; 146-clamping member; 147-first torsion spring; 148-second torsion spring; 149-first rotating shaft; 150-second rotating shaft; 151-first limiting column ;152-first limiting groove;153-second limiting groove;154-limiting portion;155-second limiting column;156-hook portion;157-connecting portion;158-pressing portion;159-first connecting arm;160-second connecting arm;161-guide slope;162-locking pin;163-reset spring;164-fixing frame;165-supporting portion;166-anti-collision head;167-protective cover;168-stop head. DETAILED DESCRIPTION

[0030] In order to make the purpose, 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 in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0031] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0033] In the description of the present invention, it should be noted that the terms "inside", "outside", "upper", "lower", "horizontal", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the product of the invention is usually placed when in use, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0034] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connect", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the features of the following embodiments can be combined with each other.

[0036] Please refer to Figure 1 The embodiment of the present invention provides an aircraft (not shown) for performing aviation flight operations. It can stop and limit the sliding door 120 when the cabin door 130 is opened to prevent the sliding door 120 from colliding with the cabin door 130, which is practical, reliable and safe.

[0037] In this embodiment, the aircraft is a helicopter, and the aircraft includes a door stopper 100 and a power device (not shown). The door stopper 100 includes a cabin 110, and the power device is installed on the cabin 110. The power device can drive the cabin 110 to take off or land to realize the flight function of the aircraft. However, this is not limited to this. In other embodiments, the aircraft can be a glider or an aircraft, and the type of aircraft is not specifically limited.

[0038] The door limiting device 100 includes a cabin body 110, a sliding door 120, a cabin door 130 and a limiting mechanism 140. The sliding door 120, the cabin door 130 and the limiting mechanism 140 are all installed on the cabin body 110. The sliding door 120 is slidably connected to the cabin body 110, and the sliding door 120 can slide open in a direction close to the cabin door 130, and cover the closed cabin door 130. The cabin door 130 is rotatably connected to the cabin body 110, and the cabin door 130 can rotate outward relative to the cabin body 110 to open. The limiting mechanism 140 is arranged between the sliding door 120 and the cabin door 130, and is connected to the cabin door 130. The limiting mechanism 140 can extend out of the cabin body 110 when the cabin door 130 is opened, so as to stop and limit the sliding door 120, and prevent the sliding door 120 from colliding with the cabin door 130. In this way, when the cabin door 130 rotates to open outside the cabin body 110, the limiting mechanism 140 simultaneously extends out of the cabin body 110. At this time, if the sliding door 120 is opened again, the limiting mechanism 140 will stop and limit the sliding door 120 to prevent the sliding door 120 from continuing to slide toward the direction close to the cabin door 130, that is, to prevent the sliding door 120 from opening, thereby avoiding interference between the sliding door 120 and the cabin door 130.

[0039] Please refer to Figure 2 The limiting mechanism 140 includes a locking pin assembly 141, a transmission rope 142 and a limiting assembly 143. The locking pin assembly 141 and the limiting assembly 143 are both installed on the cabin 110. The locking pin assembly 141 is connected to the limiting assembly 143 through the transmission rope 142. The locking pin assembly 141 is used to drive the limiting assembly 143 to move through the transmission rope 142. The limiting assembly 143 is arranged between the sliding cabin door 120 and the cabin door 130. The limiting assembly 143 is used to stop and limit the sliding cabin door 120. The locking pin assembly 141 can drive the limiting assembly 143 to extend out of the cabin 110 through the transmission rope 142 when the cabin door 130 is opened.

[0040] Please refer to Figure 3 , Figure 4 , Figure 5 and Figure 6The limiting assembly 143 includes a housing 144, a stopper 145, a clamping member 146, a first torsion spring 147, and a second torsion spring 148. A first rotating shaft 149 and a second rotating shaft 150 are arranged in the housing 144 at intervals. The stopper 145 is sleeved outside the first rotating shaft 149 and can rotate relative to the first rotating shaft 149. The stopper 145 can rotate outward from the housing 144 to extend out of the housing 144 and stop and limit the sliding door 120; the stopper 145 can also rotate inward from the housing 144 to retract into the housing 144, thereby releasing the limiting effect on the sliding door 120, and the sliding door 120 can be opened and closed normally. The first torsion spring 147 is sleeved on the outside of the first rotating shaft 149, one end of the first torsion spring 147 is abutted against the stopper 145, and the other end is abutted against the outer shell 144. The first torsion spring 147 has elastic force so that the stopper 145 has a tendency to rotate toward the outside of the outer shell 144, so that the stopper 145 can stop and limit the sliding door 120.

[0041] The clamping member 146 is sleeved outside the second rotating shaft 150 and can rotate relative to the second rotating shaft 150. The clamping member 146 is connected to the transmission rope 142 and is clamped with the stopper 145. The transmission rope 142 can pull the clamping member 146 to rotate relative to the second rotating shaft 150 so that the clamping member 146 is separated from the stopper 145. The first torsion spring 147 can drive the stopper 145 to extend out of the cabin 110 when the transmission rope 142 pulls the clamping member 146 to separate from the stopper 145. The second torsion spring 148 is sleeved outside the second rotating shaft 150. One end of the second torsion spring 148 abuts against the clamping member 146 and the other end abuts against the housing 144. The second torsion spring 148 has elastic force so that the clamping member 146 has a tendency to rotate and be clamped with the stopper 145, so as to facilitate the reset of the clamping member 146.

[0042] In this embodiment, the first rotating shaft 149 is arranged parallel to and spaced from the second rotating shaft 150, that is, the axis of rotation of the stopper 145 is arranged parallel to and spaced from the axis of rotation of the clamping member 146. The first torsion spring 147 can drive the stopper 145 to rotate relative to the first rotating shaft 149 in a direction extending out of the housing 144, and the second torsion spring 148 can drive the clamping member 146 to rotate relative to the second rotating shaft 150 in a direction retracting into the housing 144.

[0043] Further, a stopper head 168 is provided at the free end of the stopper 145, and the stopper head 168 is used to abut against the sliding door 120 to stop and limit the sliding door 120. Specifically, the stopper head 168 is made of rubber material to buffer and reduce shock on the contact between the stopper 145 and the sliding door 120.

[0044] It should be noted that a first limiting column 151 is further provided in the housing 144, and the stopper 145 is provided with a first limiting groove 152 and a second limiting groove 153. The first limiting column 151 can be embedded in the first limiting groove 152 when the first torsion spring 147 drives the stopper 145 to rotate to the first limit position, and the first limiting column 151 can also be embedded in the second limiting groove 153 when the stopper 145 overcomes the elastic force of the first torsion spring 147 and rotates to the second limit position. Specifically, when the stopper 145 is located at the first extreme position, the first limit column 151 is embedded in the first limit groove 152 and abuts against the stopper 145. The first limit column 151 can stop and limit the stopper 145 to prevent the stopper 145 from continuing to rotate out of the shell 144. At this time, the elastic force of the first torsion spring 147 is relatively small, the stopper 145 is disengaged from the clamping member 146, and extends out of the shell 144 to stop and limit the sliding door 120; when the stopper 145 is located at the second extreme position, the first limit column 151 is embedded in the second limit groove 153 and abuts against the stopper 145. The first limit column 151 can stop and limit the stopper 145 to prevent the stopper 145 from continuing to rotate into the shell 144. At this time, the elastic force of the first torsion spring 147 is relatively large, the stopper 145 is retracted into the shell 144, and can be clamped with the clamping member 146.

[0045] Furthermore, a limiting portion 154 and a second limiting column 155 are further provided in the housing 144. The limiting portion 154 can abut against the clamping member 146 when the second torsion spring 148 drives the clamping member 146 to rotate to the third limit position, and the second limiting column 155 can abut against the clamping member 146 when the clamping member 146 overcomes the elastic force of the second torsion spring 148 and rotates to the fourth limit position. Specifically, when the clamping member 146 is located at the third extreme position, the clamping member 146 abuts against the limiting portion 154, and the limiting portion 154 can stop and limit the clamping member 146 to prevent the clamping member 146 from rotating in the direction of extending out of the shell 144. At this time, the elastic force of the second torsion spring 148 is relatively small, and the clamping member 146 can be engaged with the stopper 145; when the clamping member 146 is located at the fourth extreme position, the clamping member 146 abuts against the second limiting column 155, and the second limiting column 155 can stop and limit the clamping member 146 to prevent the clamping member 146 from continuing to rotate into the shell 144. At this time, the elastic force of the second torsion spring 148 is relatively large, and the clamping member 146 is disengaged from the stopper 145.

[0046] The clamping member 146 includes a hook portion 156, a connecting portion 157 and a pressing portion 158. The hook portion 156 is fixedly connected to the pressing portion 158 through the connecting portion 157. In this embodiment, the hook portion 156, the connecting portion 157 and the pressing portion 158 are integrally formed to improve the connection strength. The hook portion 156 is connected to the transmission rope 142 and is engaged with the stopper 145. The transmission rope 142 can drive the hook portion 156 to move so that the hook portion 156 is disengaged from the stopper 145. The connecting portion 157 is sleeved outside the second rotating shaft 150. The connecting portion 157 can rotate relative to the second rotating shaft 150 so that the entire clamping member 146 rotates relative to the second rotating shaft 150. The pressing portion 158 is used to manually control the disengagement of the hook portion 156 from the stop member 145. The staff can press the pressing portion 158 outside the cabin body 110 to rotate the holding member 146 toward the inside of the shell 144 relative to the second rotating shaft 150, thereby disengaging the hook portion 156 from the stop member 145, and then realizing that the stop member 145 pops out of the shell 144 under the action of the first torsion spring 147, so as to stop and limit the sliding cabin door 120.

[0047] In this embodiment, the connection portion 157 is L-shaped, and includes a first connection arm 159 and a second connection arm 160 fixedly connected at a preset angle. The first connection arm 159 is fixedly connected to the hook portion 156, and the second connection arm 160 is fixedly connected to the pressing portion 158. Specifically, the preset angle is 90 degrees, but it is not limited thereto. In other embodiments, the preset angle may be 80 degrees or 100 degrees, and the degree of the preset angle is not specifically limited.

[0048] In this embodiment, the hook portion 156 is provided with a guide slope 161 , and the stopper 145 can slide relative to the guide slope 161 to reduce friction resistance, so as to facilitate the stopper 145 to engage with the hook portion 156 during the resetting process.

[0049] In this embodiment, the transmission rope 142 is a steel wire rope, and a protective cover 167 is provided outside the transmission rope 142. The protective cover 167 can shield and protect the transmission rope 142. The transmission rope 142 can slide relative to the protective cover 167 to realize the function of the locking pin 162 pulling the clamping member 146 to move.

[0050] Please refer to Figure 7 and Figure 8The lock pin assembly 141 includes a lock pin 162, a return spring 163 and a fixing frame 164. The fixing frame 164 is fixedly connected to the cabin 110, and the lock pin 162 passes through the fixing frame 164 and can slide relative to the fixing frame 164. One end of the lock pin 162 is connected to the transmission rope 142, and the other end is against the cabin door 130, and the cabin door 130 can stop and limit the lock pin 162. The lock pin 162 is provided with a supporting portion 165, and the return spring 163 is sleeved outside the lock pin 162. One end of the return spring 163 is against the fixing frame 164, and the other end is against the supporting portion 165. The return spring 163 has elastic force, so that the lock pin 162 has a tendency to move in a direction away from the fixing frame 164, so that the lock pin 162 pulls the transmission rope 142 to move. The return spring 163 can pull the transmission rope 142 to move via the lock pin 162 when the cabin door 130 is opened. When the cabin door 130 is opened, the cabin door 130 no longer abuts against the lock pin 162. At this time, the abutting portion 165 moves in a direction away from the fixing frame 164 under the elastic force of the return spring 163, so that the lock pin 162 pulls the transmission rope 142 to move.

[0051] In this embodiment, the cabin door 130 is provided with a hinge 131, and the hinge 131 is hinged to the cabin body 110, so as to realize the function that the cabin door 130 can be rotated to open or close relative to the cabin body 110. An anti-collision head 166 is provided at one end of the lock pin 162 away from the transmission rope 142, and the hinge 131 abuts against the anti-collision head 166. The hinge 131 can stop and limit the lock pin 162 through the anti-collision head 166. When the cabin door 130 is rotated to open relative to the cabin body 110, the hinge 131 rotates synchronously and no longer abuts against the anti-collision head 166. Specifically, the anti-collision head 166 is made of nylon material to buffer and reduce shock on the contact between the lock pin 162 and the hinge 131.

[0052] It should be noted that during the limiting process of the door limiting device 100, the cabin door 130 rotates and opens relative to the cabin body 110 to drive the hinge 131 to move in the direction away from the fixing frame 164, thereby causing the hinge 131 to disengage from the locking pin 162. At this time, the locking pin 162 moves in the direction away from the fixing frame 164 under the elastic force of the return spring 163, and pulls the clamping member 146 through the transmission rope 142 to overcome the elastic force of the second torsion spring 148 to rotate relative to the second rotating shaft 150. When the clamping member 146 rotates to the fourth extreme position, the clamping member 146 disengages from the stop member 145, and the stop member 145 rotates relative to the first rotating shaft 149 under the elastic force of the first torsion spring 147. When the stop member 145 rotates to the first extreme position, the stop member 145 extends out of the outer shell 144 to stop and limit the sliding door 120 to prevent the sliding door 120 from colliding with the cabin door 130.

[0053] In the door stopper 100 provided in the embodiment of the present invention, the sliding door 120 is slidably connected to the cabin body 110, the sliding door 120 can slide open in the direction close to the cabin door 130, the stopper mechanism 140 is arranged between the sliding door 120 and the cabin door 130, and is connected to the cabin door 130, and the stopper mechanism 140 can extend out of the cabin body 110 when the cabin door 130 is opened, so as to stop and limit the sliding door 120, and prevent the sliding door 120 from colliding with the cabin door 130. Compared with the prior art, the door stopper 100 provided in the present invention adopts the stopper mechanism 140 connected to the cabin door 130 and arranged between the sliding door 120 and the cabin door 130, so that the sliding door 120 can be stopped and limited when the cabin door 130 is opened, so as to prevent the sliding door 120 from colliding with the cabin door 130, and is practical and reliable. Thus, the aircraft has strong safety and long service life.

[0054] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A door stop device, characterized in that: The invention comprises a cabin body and a sliding cabin door, a passenger cabin door and a limiting mechanism installed on the cabin body. The sliding cabin door is slidably connected to the cabin body and can be slid open in a direction close to the passenger cabin door. The limiting mechanism is arranged between the sliding cabin door and the passenger cabin door and is connected to the passenger cabin door. The limiting mechanism can extend out of the cabin body when the passenger cabin door is opened to stop and limit the sliding cabin door to prevent the sliding cabin door from colliding with the passenger cabin door.

2. The door limiting device according to claim 1, characterized in that: The limiting mechanism includes a locking pin assembly, a transmission rope and a limiting assembly. The locking pin assembly and the limiting assembly are both installed on the cabin body. The locking pin assembly is connected to the limiting assembly through the transmission rope. The limiting assembly is arranged between the sliding cabin door and the passenger cabin door. The locking pin assembly can drive the limiting assembly to extend out of the cabin body through the transmission rope when the passenger cabin door is opened.

3. The door limiting device according to claim 2, characterized in that: The limit assembly includes an outer shell, a stopper, a clamping member and a first torsion spring. A first rotating shaft and a second rotating shaft are spaced apart in the outer shell. The stopper is sleeved outside the first rotating shaft and can rotate relative to the first rotating shaft. The first torsion spring is sleeved outside the first rotating shaft. One end of the first torsion spring abuts against the stopper, and the other end abuts against the outer shell. The clamping member is sleeved outside the second rotating shaft and can rotate relative to the second rotating shaft. The clamping member is connected to the transmission rope and clamped with the stopper. The first torsion spring can drive the stopper to extend out of the cabin when the transmission rope pulls the clamping member to disengage from the stopper.

4. The door limiting device according to claim 3, characterized in that: The holding member includes a hook portion, a connecting portion and a pressing portion, the hook portion is fixedly connected to the pressing portion through the connecting portion, the hook portion is connected to the transmission rope and is engaged with the stopper, the connecting portion is sleeved outside the second rotating shaft, and the pressing portion is used to manually control the hook portion to disengage from the stopper.

5. The door limiting device according to claim 3, characterized in that: A first limiting column is also provided in the shell, and the stop member is provided with a first limiting groove and a second limiting groove. The first limiting column can be embedded in the first limiting groove when the first torsion spring drives the stop member to rotate to the first limit position, and the first limiting column can also be embedded in the second limiting groove when the stop member overcomes the elastic force of the first torsion spring and rotates to the second limit position.

6. The door limiting device according to claim 3, characterized in that: The limiting assembly further includes a second torsion spring, which is sleeved outside the second rotating shaft, one end of the second torsion spring abuts against the clamping member, and the other end of the second torsion spring abuts against the housing.

7. The door limiting device according to claim 6, characterized in that: A limiting portion and a second limiting column are also provided in the shell. The limiting portion can abut against the clamping member when the second torsion spring drives the clamping member to rotate to the third limit position. The second limiting column can abut against the clamping member when the clamping member overcomes the elastic force of the second torsion spring and rotates to the fourth limit position.

8. The door limiting device according to any one of claims 2 to 7, characterized in that: The lock pin assembly includes a lock pin member, a return spring and a fixing frame, the fixing frame is fixedly connected to the cabin body, the lock pin member passes through the fixing frame and can slide relative to the fixing frame, one end of the lock pin member is connected to the transmission rope, and the other end is abutted against the cabin door, the lock pin member is provided with a supporting portion, the return spring is sleeved outside the lock pin member, one end of the return spring is abutted against the fixing frame, and the other end is abutted against the supporting portion, and the return spring can pull the transmission rope to move through the lock pin member when the cabin door is opened.

9. The door limiting device according to claim 8, characterized in that: The cabin door is provided with a hinge, the hinge is hinged to the cabin body, an anti-collision head is provided at one end of the lock pin away from the transmission rope, and the hinge abuts against the anti-collision head.

10. An aircraft, characterized in that: It comprises a door limiting device as described in any one of claims 1 to 9.

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