An automatic parachute detachment mechanism and an aircraft

Abstract

The present invention relates to the technical field of parachute separation, and discloses a parachute automatic detachment mechanism and an aircraft. The parachute automatic detachment mechanism includes a cylinder body for connecting with the aircraft; the cylinder body has a channel penetrating along its own axial direction; a pull rod for connecting with the parachute; the pull rod is located in the channel; a first limiting member is arranged on the cylinder body near the top of the channel and can move radially along the cylinder body; the first limiting member abuts against and limits the pull rod to limit the top of the pull rod from moving towards the bottom of the cylinder body; a second limiting member is arranged on the cylinder body near the bottom of the channel and can move radially along the cylinder body; the second limiting member abuts against and limits the pull rod to limit the bottom of the pull rod from moving towards the top of the cylinder body. The aircraft includes the parachute automatic detachment mechanism. Through the above solution, the present invention can solve the technical problem that the limiting mechanism between the connecting pull rod and the cylinder body in the related art cannot be reused.

Description

Technical Field

[0001] The present invention relates to the technical field of parachute separation, and particularly to an automatic parachute detachment mechanism and an aircraft. Background Art

[0002] After the parachute has completed its mission (such as after the carrier aircraft has landed), if it is not separated in time, it may drag the carrier aircraft due to wind force or inertia, resulting in capsizing, structural damage, or injury to personnel. Therefore, most existing aircraft are provided with a parachute detachment mechanism to enable the parachute to be separated from the aircraft in time.

[0003] The parachute detachment mechanism usually includes a cylinder body, a pull rod, and a limiting mechanism. The cylinder body is arranged on the aircraft. The pull rod is connected to the parachute and is connected to the cylinder body through the limiting mechanism. When the parachute is opened, the limiting mechanism prevents the pull rod from separating from the cylinder body so that the parachute can function. After the parachute has completed its mission, the limiting mechanism falls off, and the pull rod naturally separates from the cylinder body so that the parachute detaches. In the related art, after the pull rod separates from the cylinder body, the limiting mechanism fails and cannot be reused. Summary of the Invention

[0004] The present application discloses an automatic parachute detachment mechanism and an aircraft to solve the technical problem that the limiting mechanism between the connecting pull rod and the cylinder body in the related art cannot be reused.

[0005] To solve the above problems, the present invention adopts the following technical solutions:

[0006] In a first aspect, the present application discloses an automatic parachute detachment mechanism, including:

[0007] A cylinder body for connecting with an aircraft; the cylinder body has a channel penetrating along its own axis;

[0008] A pull rod for connecting with a parachute; the pull rod is located in the channel;

[0009] A first limiting member is arranged on the cylinder body near the top of the channel and can move radially along the cylinder body; the first limiting member abuts against and limits the pull rod, and is used to limit the top of the pull rod from moving towards the bottom of the cylinder body;

[0010] A second limiting member is arranged on the cylinder body near the bottom of the channel and can move radially along the cylinder body; the second limiting member abuts against and limits the pull rod, and is used to limit the bottom of the pull rod from moving towards the top of the cylinder body;

[0011] Wherein, the second limiting member can move axially along the channel between a first position and a second position; during the process of the pull rod moving from the first position to the second position, the first limiting member moves away from the axial direction of the channel so that the first limiting member is separated from the pull rod; after the pull rod moves from the second position to the first position, as the top of the pull rod moves towards the bottom of the cylinder, the second limiting member moves away from the axial direction of the channel so that the second limiting member is separated from the pull rod.

[0012] In some solutions, after the first limiting member is separated from the pull rod, the first limiting member abuts and limits against the cylinder body;

[0013] After the second limiting member is separated from the pull rod, the second limiting member abuts and limits against the cylinder body.

[0014] In some solutions, the first limiting member is provided with a first connecting portion, and the cylinder body is provided with a second connecting portion; after the first limiting member is separated from the pull rod, the first connecting portion is connected to the second connecting portion so that the first limiting member abuts and limits against the cylinder body;

[0015] The second limiting member is provided with a third connecting portion, and the cylinder body is further provided with a fourth connecting portion; after the second limiting member is separated from the pull rod, the third connecting portion is connected to the fourth connecting portion so that the second limiting member abuts and limits against the cylinder body.

[0016] In some solutions, the parachute automatic detachment mechanism further includes a separating member, the separating member is connected to the cylinder body and can move axially along the cylinder body; the separating member is used to contact the first limiting member and the second limiting member so that the first connecting portion and the second connecting portion, and the third connecting portion and the fourth connecting portion are separated.

[0017] In some solutions, the separating member includes a contact portion and a driving portion;

[0018] The contact portion is arranged inside the cylinder body and can move axially along the cylinder body; the contact portion is used to contact the first limiting member and the second limiting member so that the first connecting portion and the second connecting portion, and the third connecting portion and the fourth connecting portion are separated;

[0019] The driving portion is sleeved on the cylinder body, connected to the contact portion, and can move axially along the cylinder body.

[0020] In some solutions, the first limiting member and the second limiting member are respectively connected to the cylinder body through first elastic members;

[0021] And / or, a first inclined portion is provided at the contact position between the first limiting member and the contact portion;

[0022] And / or, a second inclined portion is provided at the contact position between the second limiting member and the contact portion.

[0023] In some solutions, the second limiting member includes a moving portion and a abutting portion;

[0024] The moving part can move closer to or away from the axis of the channel, and the stopping part is slidably connected to the moving part through a second elastic member; the stopping part can move axially along the channel between a first position and a second position.

[0025] In some solutions, the pull rod is provided with a first limiting groove corresponding to the first limiting member, and at least one contact surface of the first limiting groove and the first limiting member has an inclined first guiding portion;

[0026] The pull rod is further provided with a second limiting groove corresponding to the second limiting member, and at least one contact surface of the second limiting groove and the stopping part has an inclined second guiding portion.

[0027] In some solutions, the inner wall of the cylinder body is provided with a first positioning portion, and the outer wall of the pull rod is provided with a second positioning portion that cooperates with the first positioning portion; when the first positioning portion and the second positioning portion are connected, the first limiting member is aligned with the first limiting groove, and the second limiting member is aligned with the second limiting groove;

[0028] The first positioning portion and the second positioning portion can be separated under force.

[0029] In a second aspect, the present application also discloses an aircraft, including the parachute automatic detachment mechanism in the first aspect.

[0030] The technical solutions adopted by the present invention can achieve the following beneficial effects:

[0031] For the parachute automatic detachment mechanism of the present application, when the parachute is not opened, the first limiting member and the second limiting member respectively stop and limit the pull rod to fix the pull rod to the cylinder body. After the parachute is opened, the pull rod is subjected to the pulling force of the parachute, and the pull rod and the second limiting member move from the first position to the second position. During this process, the first limiting member moves in a direction away from the axis of the channel and separates from the pull rod, and the second limiting member continues to stop and limit the pull rod at the second position, so that the pull rod will not fall off from the cylinder body, so that the pulling force generated by the parachute acts on the aircraft. After the aircraft lands, the parachute loses the upward pulling force, and the pull rod moves under the action of gravity, moving from the second position to the first position. During this process, the second limiting member moves in a direction away from the axis of the channel and separates from the pull rod. When the parachute is affected by wind force, the parachute pulls out the pull rod upward to realize the automatic detachment of the parachute from the aircraft. Since the first limiting block and the second limiting block will not be damaged structurally after separating from the pull rod, and the first limiting block and the second limiting block will not fall off from the cylinder body but remain in the cylinder body after separating from the pull rod, when reinstalling the pull rod and the cylinder body, only need to move the first limiting block and the second limiting block and stop and limit them with the pull rod to reuse. Description of the Drawings

[0032] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0033] Figure 1 is an axonometric view of a parachute automatic detachment mechanism disclosed in some embodiments of the present application;

[0034] Figure 2 is a schematic diagram of the working state of a parachute automatic detachment mechanism disclosed in some embodiments of the present application Figure 1 ;

[0035] Figure 3 is a schematic diagram of the working state of a parachute automatic detachment mechanism disclosed in some embodiments of the present application Figure 2 ;

[0036] Figure 4 is Figure 3 an enlarged view of part A in

[0037] Figure 5 is a schematic diagram of the working state of a parachute automatic detachment mechanism disclosed in some embodiments of the present application Figure 3 ;

[0038] Figure 6 is a schematic diagram of the working state of a parachute automatic detachment mechanism disclosed in some embodiments of the present application Figure 4 ;

[0039] Figure 7 is an axonometric view of a second limiting member disclosed in some embodiments of the present application;

[0040] Figure 8 is a sectional view of a second limiting member disclosed in some embodiments of the present application;

[0041] Figure 9 is an axonometric view of a pull rod disclosed in some embodiments of the present application;

[0042] Figure 10 is a sectional view of a parachute automatic detachment mechanism disclosed in some embodiments of the present application Figure 1 ;

[0043] Figure 11 is a sectional view of a parachute automatic detachment mechanism disclosed in some embodiments of the present application Figure 2 .

[0044] In the figure:

[0045] 100 - Pull rod, 110 - First connection hole, 120 - First limiting groove, 121 - First guiding part, 130 - Second limiting groove, 131 - Second guiding part, 140 - Second positioning part;

[0046] 200 - Cylinder body, 210 - Channel, 220 - First limiting member, 221 - First inclined part, 222 - First connection part, 230 - Second limiting member, 231 - Moving part, 2311 - Second inclined part, 2312 - Third connection part, 232 - Stopping part, 233 - Second elastic member, 240 - First elastic member, 250 - Second connection hole, 260 - Second connection part, 270 - Fourth connection part, 280 - First positioning part;

[0047] 300 - Separation part, 310 - Driving part, 320 - Contact part. Detailed implementation mode

[0048] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments in the present invention, all other implementation manners obtained by those of ordinary skill in the art without creative efforts fall within the scope protected by the present invention.

[0049] The terms "first", "second", etc. in the description and claims of this application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such used data can be interchanged under appropriate circumstances so that the embodiments of this application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are usually of the same type, and do not limit the number of objects. For example, the first object can be one or multiple. In addition, "and / or" in the description and claims means at least one of the connected objects, and the character " / ", generally represents an "or" relationship between the associated objects before and after.

[0050] The inventor found in use that the existing parachute detachment mechanisms usually have a cylinder body, a pull rod and a limiting mechanism. The cylinder body is arranged on the aircraft, the pull rod is connected to the parachute, and is connected to the cylinder body through the limiting mechanism. When the parachute is opened, the limiting mechanism prevents the pull rod from separating from the cylinder body so that the parachute can function. After the parachute completes its task, the limiting mechanism falls off, and the pull rod and the cylinder body naturally separate so that the parachute detaches. Currently, common ways for the limiting mechanism to fall off include mechanical trigger type detachment, pyrotechnic device detachment, etc., which will damage the limiting mechanism, and the limiting mechanism will detach from the cylinder body, resulting in the inability to reuse the limiting mechanism.

[0051] The following is combined with the attached Figures 1 to 11, a parachute automatic detachment mechanism and an aircraft provided by the present application are described in detail through specific embodiments and their application scenarios.

[0052] Some embodiments of the present application provide a parachute automatic detachment mechanism, including a cylinder body 200, a pull rod 100, a first limiting member 220, a second limiting member 230, and a separating member 300.

[0053] As Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 6 shown, the cylinder body 200 has a channel 210 penetrating along its own axis, and the pull rod 100 is located in the channel 210. The channel 210 is used to cooperate with the pull rod 100 to realize the connection between the pull rod 100 and the cylinder body 200.

[0054] As Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 6 shown, the pull rod 100 is used to connect with the parachute, and the cylinder body 200 is used to connect with the aircraft. Since the pull rod 100 can be cooperatively connected with the cylinder body 200, the pulling force of the parachute on the pull rod 100 can be transmitted to the aircraft through the cylinder body 200, thereby playing a role in decelerating the aircraft.

[0055] In this embodiment, a first connection hole 110 is provided at the top of the pull rod 100, and the installation with the parachute is realized through the first connection hole 110.

[0056] In this embodiment, a second connection hole 250 is provided on the outer wall of the cylinder body 200, and the installation with the aircraft is realized through the second connection cylinder.

[0057] As Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 6 shown, the first limiting member 220 is disposed on the cylinder body 200 near the top of the channel 210 and abuts against the pull rod 100 for limiting, and is used to limit the top of the pull rod 100 from moving towards the bottom of the cylinder body 200. Under the action of gravity, the pull rod 100 is likely to fall off from the channel 210. Therefore, by providing the first limiting member 220 that limits the top of the pull rod 100 from moving towards the bottom of the cylinder body 200, the situation where the pull rod 100 is separated from the cylinder body 200 under the action of gravity can be avoided.

[0058] As Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 6As shown, the second limiting member 230 is disposed on the cylinder body 200 near the bottom of the channel 210 and abuts against the pull rod 100 for limiting, so as to limit the bottom of the pull rod 100 from moving towards the top of the cylinder body 200. When the parachute opens, the pull rod 100 will be subjected to an upward pulling force, resulting in the pull rod 100 falling off from the channel 210. Therefore, by providing the second limiting member 230 that limits the bottom of the pull rod 100 from moving towards the top of the channel 210, the situation where the pull rod 100 separates from the cylinder body 200 under the action of the parachute pulling force can be avoided.

[0059] As Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 6 and Figure 10 As shown, the first limiting member 220 can move radially along the cylinder body 200. When the first limiting member 220 moves axially away from the channel 210, the first limiting member 220 separates from the pull rod 100, so that the top of the pull rod 100 can move towards the bottom of the cylinder body 200; on the contrary, when the first limiting member 220 moves axially close to the channel 210, the first limiting member 220 contacts the pull rod 100 to limit the top of the pull rod 100 from moving towards the bottom of the cylinder body 200.

[0060] As Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 6 and Figure 11 As shown, the second limiting member 230 can move radially along the cylinder body 200. When the second limiting member 230 moves axially away from the channel 210, the second limiting member 230 separates from the pull rod 100, so that the bottom of the pull rod 100 can move towards the top of the cylinder body 200; on the contrary, when the second limiting member 230 moves axially close to the channel 210, the second limiting member 230 contacts the pull rod 100 to limit the bottom of the pull rod 100 from moving towards the top of the cylinder body 200.

[0061] In this embodiment, a guiding groove is provided on the cylinder body 200, and the first limiting member 220 and the second limiting member 230 are slidably disposed in the guiding groove, so that the first limiting member 220 and the second limiting member 230 move along a fixed track.

[0062] As Figure 2 , Figure 3 , Figure 5 and Figure 6As shown, the second limiting member 230 can move axially along the channel 210 between a first position and a second position. After the parachute is opened, the pull rod 100 is subjected to a pulling force, driving the second limiting member 230 and the pull rod 100 to move from the first position to the second position, and the second position is a dead point position to limit the bottom of the pull rod 100 from continuing to move towards the top of the cylinder 200, thereby ensuring that during the operation of the parachute, the pull rod 100 will not separate from the cylinder 200 due to the pulling force of the parachute.

[0063] In this embodiment, the channel 210 has a stepped structure. When the second limiting member 230 is located at the second position, the stepped structure of the channel 210 abuts and limits the second limiting member 230 to restrict the further movement of the second limiting member 230. Moreover, the stepped structure of the channel 210 can also bear the axial force exerted by the pull rod 100 on the second limiting member 230, avoiding excessive force on the second limiting member 230.

[0064] As Figure 2 and Figure 3 shown, during the process of the pull rod 100 moving from the first position to the second position, the first limiting member 220 moves axially away from the channel 210 so that the first limiting member 220 separates from the pull rod 100. After the parachute is opened, the pull rod 100 is subjected to the pulling force of the parachute. The pull rod 100 and the second limiting member 230 move from the first position to the second position. During this process, the first limiting member 220 moves in a direction away from the axis of the channel 210 and separates from the pull rod 100. The second limiting member 230 continues to abut and limit the pull rod 100 at the second position, so that the pull rod 100 will not fall off from the cylinder 200, enabling the pulling force generated by the parachute to act on the aircraft.

[0065] As Figure 3 and Figure 5 shown, during the process of the pull rod 100 moving from the second position to the first position, the second limiting member 230 moves axially away from the channel 210 so that the second limiting member 230 separates from the pull rod 100. After the aircraft lands, the parachute loses the upward pulling force, and the pull rod 100 moves under the action of gravity, moving from the second position to the first position. During this process, the second limiting member 230 moves in a direction away from the axis of the channel 210 and separates from the pull rod 100. When the parachute is affected by wind force, the parachute pulls out the pull rod 100 upward to achieve the automatic separation of the parachute from the aircraft, as Figure 6 shown.

[0066] As Figure 3As shown in the figure, after the first limiting member 220 is separated from the pull rod 100, the first limiting member 220 abuts against and limits the cylinder body 200. During the process of the pull rod 100 moving from the first position to the second position, the first limiting member 220 moves axially away from the channel 210 so that the first limiting member 220 is separated from the pull rod 100. After the first limiting member 220 is separated from the pull rod 100, the first limiting member 220 abuts against and limits the cylinder body 200 to limit the radial movement of the first limiting member 220 along the channel 210 and prevent the first limiting member 220 from falling off the cylinder body 200.

[0067] As Figure 5 and Figure 6 shown in the figure, after the second limiting member 230 is separated from the pull rod 100, the second limiting member 230 abuts against and limits the cylinder body 200. After the pull rod 100 moves from the second position to the first position, as the top of the pull rod 100 moves towards the bottom of the cylinder body 200, the second limiting member 230 moves axially away from the channel 210 so that the second limiting member 230 is separated from the pull rod 100. After the second limiting member 230 is separated from the pull rod 100, the second limiting member 230 abuts against and limits the cylinder body 200 to limit the radial movement of the second limiting member 230 along the channel 210 and prevent the second limiting member 230 from falling off the cylinder body 200.

[0068] Since the first limiting block and the second limiting block are not damaged structurally after being separated from the pull rod 100, and the first limiting block and the second limiting block do not fall off the cylinder body 200 but remain inside the cylinder body 200 after being separated from the pull rod 100, when the pull rod 100 and the cylinder body 200 are reinstalled, it is only necessary to move the first limiting block and the second limiting block and abut them against the pull rod 100 for reuse.

[0069] In this embodiment, the number of the first limiting block and the second limiting block can be 1, 2, 3, 4 or more, which can be flexibly set according to actual usage requirements, and this embodiment does not make any limitation in this regard.

[0070] Among them, in the embodiment where there are multiple first limiting blocks and multiple second limiting blocks, the multiple first limiting blocks and the multiple second limiting blocks are arranged at intervals along the circumferential direction of the channel 210 so that the abutting and limiting effect of the first limiting block and the second limiting block on the pull rod 100 is better.

[0071] As Figure 10As shown, the first limiting member 220 is provided with a first connecting portion 222, and the cylinder body 200 is provided with a second connecting portion 260; after the first limiting member 220 is separated from the pull rod 100, the first connecting portion 222 is connected to the second connecting portion 260 so that the first limiting member 220 and the cylinder body 200 are abutted and limited. After the first limiting member 220 is separated from the pull rod 100, the first limiting member 220 and the cylinder body 200 are quickly locked through the first connecting portion 222 and the second connecting portion 260, avoiding interference of the first limiting member 220 with the pull rod 100 during the movement of the pull rod 100, and preventing the first limiting member 220 from falling off the cylinder body 200.

[0072] In this embodiment, the first connecting portion 222 and the second connecting portion 260 can be a pair of magnets with opposite magnetic poles, a snap-fastener slot structure, etc., which can be flexibly set according to the use requirements, and this embodiment does not limit this.

[0073] As Figure 11 shown, the second limiting member 230 is provided with a third connecting portion 2312, and the cylinder body 200 is further provided with a fourth connecting portion 270; after the second limiting member 230 is separated from the pull rod 100, the third connecting portion 2312 is connected to the fourth connecting portion 270 so that the second limiting member 230 and the cylinder body 200 are abutted and limited. After the second limiting member 230 is separated from the pull rod 100, the second limiting member 230 and the cylinder body 200 are quickly locked through the third connecting portion 2312 and the fourth connecting portion 270, avoiding interference of the second limiting member 230 with the pull rod 100 during the movement of the pull rod 100, and preventing the second limiting member 230 from falling off the cylinder body 200.

[0074] In this embodiment, the third connecting portion 2312 and the fourth connecting portion 270 can be a pair of magnets with opposite magnetic poles, a snap-fastener slot structure, etc., which can be flexibly set according to the use requirements, and this embodiment does not limit this.

[0075] As Figure 2 、 Figure 3 and Figure 5 shown, the separating member 300 is connected to the cylinder body 200 and can move axially along the cylinder body 200; the separating member 300 is used to contact the first limiting member 220 and the second limiting member 230 so that the first connecting portion 222 and the second connecting portion 260, and the third connecting portion 2312 and the fourth connecting portion 270 are separated. When the pull rod 100 is reinstalled with the cylinder body 200, by moving the separating member 300, the separating member 300 is brought into contact with the first limiting member 220 and the second limiting member 230, so that the first connecting portion 222 and the second connecting portion 260 are separated, and the third connecting portion 2312 and the fourth connecting portion 270 are separated, thereby causing the first limiting member 220 and the second limiting member 230 to move axially toward the channel 210 and abut and limit the pull rod 100.

[0076] As Figure 2 、 Figure 3 and Figure 5 shown, the separating member 300 includes a contact portion 320 and a driving portion 310. The contact portion 320 is disposed within the cylinder 200 and is axially movable along the cylinder 200. When the contact portion 320 moves axially along the cylinder 200 towards the top of the cylinder 200, the contact portion 320 can contact the first limiting member 220, so that the first connecting portion 222 and the second connecting portion 260 are forced to separate, and further cause the first limiting member 220 to move axially towards the channel 210 and abut against the pull rod 100 for limiting. When the contact portion 320 moves axially along the cylinder 200 towards the bottom of the cylinder 200, the contact portion 320 can contact the second limiting member 230, so that the third connecting portion 2312 and the fourth connecting portion 270 are forced to separate, and further cause the second limiting member 230 to move axially towards the channel 210 and abut against the pull rod 100 for limiting.

[0077] It should be noted that in embodiments where there are multiple first limiting portions and second limiting portions, the number of contact portions 320 is also multiple, and one contact portion 320 corresponds to one limiting portion and one second limiting portion respectively.

[0078] In this embodiment, a chute axially penetrating the cylinder 200 is provided within the cylinder 200, and the contact portion 320 is slidably disposed within the chute.

[0079] As Figure 1 、 Figure 2 、 Figure 3 and Figure 5 shown, the driving portion 310 is sleeved on the cylinder 200, connected to the contact portion 320, and axially movable along the cylinder 200. When it is necessary to move the contact portion 320, the operator can slide the driving portion 310, thereby driving the contact portion 320 to move axially along the cylinder 200.

[0080] As Figure 2 、 Figure 3 and Figure 5 shown, the first limiting member 220 and the second limiting member 230 are respectively connected to the cylinder 200 through first elastic members 240. After the first connecting portion 222 and the second connecting portion 260 are separated, and after the third connecting portion 2312 and the fourth connecting portion 270 are separated, the first limiting member 220 and the second limiting member 230 can quickly recover under the action of the first elastic members 240 and abut against the pull rod 100 for limiting.

[0081] It should be noted that when the first connecting portion 222 is connected to the second connecting portion 260, and when the third connecting portion 2312 is connected to the fourth connecting portion 270, the acting force between the first connecting portion 222 and the second connecting portion 260, and the acting force between the third connecting portion 2312 and the fourth connecting portion 270 are both greater than the elastic force of the first elastic member 240, thereby avoiding the situation where the first limiting member 220 and the second limiting member 230 cannot be abutted and limited with the cylinder body 200.

[0082] In this embodiment, the first elastic member 240 is preferably a spring.

[0083] Such as Figure 2 、 Figure 3 and Figure 5 As shown in

[0084] As shown in Figure 2 、 Figure 3 、 Figure 5 、 Figure 7 and Figure 8 As shown in

[0085] As shown in Figure 2 、 Figure 3 、 Figure 5 、 Figure 7 and Figure 8As shown, the second limiting member 230 includes a moving portion 231 and a stopping portion 232. The moving portion 231 can move closer to or away from the axis of the channel 210; the stopping portion 232 can move axially along the channel 210 between a first position and a second position. The stopping portion 232 is used to stop and limit the pull rod 100 and can move axially along the channel 210 between the first position and the second position. During the process of the pull rod 100 moving from the first position to the second position, the stopping portion 232 moves synchronously with the pull rod 100, and the position of the moving portion 231 remains unchanged. After the pull rod 100 moves from the second position to the first position, as the top of the pull rod 100 continues to move towards the bottom of the cylinder body 200, the moving portion 231 and the stopping portion 232 move radially away from the axis of the channel 210 along the channel 210.

[0086] It should be noted that when the stopping portion 232 is in the first position, the stopping portion 232 does not contact the cylinder body 200 radially along the cylinder body 200, so that the stopping portion 232 can move radially along the cylinder body 200 following the moving portion 231. When the stopping portion 232 is in the second position, there is movement interference between the stopping portion 232 and the cylinder body 200 radially along the cylinder body 200, so that the moving portion 231 cannot move radially along the cylinder body 200.

[0087] As Figure 8 shown, the stopping portion 232 and the moving portion 231 are slidably connected through a second elastic member 233. During the process of the pull rod 100 and the moving portion 231 moving from the first position to the second position, the second elastic member 233 is compressed to store elastic potential energy. When the pull rod 100 and the moving portion 231 move from the second position to the first position, the second elastic member 233 releases the elastic potential energy to drive the top of the pull rod 100 to move towards the bottom of the cylinder body 200.

[0088] In this embodiment, the second elastic member 233 is preferably a spring.

[0089] As Figure 3 、 Figure 5 and Figure 9 shown, the pull rod 100 is provided with a first limiting groove 120 corresponding to the first limiting member 220. When the first limiting member 220 stops and limits the pull rod 100, the first limiting member 220 abuts in the first limiting groove 120 to limit the top of the pull rod 100 from moving towards the bottom of the cylinder body 200.

[0090] As Figure 3 、 Figure 5 and Figure 9As shown, at least one contact surface of the first limiting groove 120 and the first limiting member 220 has an inclined first guiding portion 121. During the process of the pull rod 100 moving from the first position to the second position, due to the existence of the first guiding portion 121, the axial displacement of the pull rod 100 is converted into the radial force of the first limiting member 220, guiding the first limiting member 220 and the first limiting groove 120 to disengage along a predetermined trajectory, effectively reducing the separation resistance, avoiding jamming or component deformation, and making it easier to drive the first limiting member 220 to move axially away from the channel 210 in the radial direction of the cylinder body 200, so that the first limiting member 220 is separated from the first limiting groove 120.

[0091] In some embodiments, the first limiting groove 120 has an inclined first guiding portion 121.

[0092] In some embodiments, the first limiting member 220 has an inclined first guiding portion 121.

[0093] In some embodiments, the first limiting member 220 and the first limiting groove 120 respectively have an inclined first guiding portion 121.

[0094] As Figure 5 and Figure 9 shown, the pull rod 100 is further provided with a second limiting groove 130 corresponding to the second limiting member 230. When the second limiting member 230 abuts and limits the pull rod 100, the second limiting member 230 abuts in the second limiting groove 130 to limit the bottom of the pull rod 100 from moving towards the top of the cylinder body 200.

[0095] As Figure 5 and Figure 9 shown, at least one contact surface of the second limiting groove 130 and the abutting portion 232 has an inclined second guiding portion 131. After the pull rod 100 moves from the second position to the first position, during the process of the top of the pull rod 100 continuing to move towards the bottom of the cylinder body 200, due to the existence of the second guiding portion 131, the axial displacement of the pull rod 100 is converted into the radial force of the second limiting member 230, guiding the second limiting member 230 and the second limiting groove 130 to disengage along a predetermined trajectory, effectively reducing the separation resistance, avoiding jamming or component deformation, and making it easier to drive the second limiting member 230 to move axially away from the channel 210 in the radial direction of the cylinder body 200, so that the first limiting member 220 is separated from the first limiting groove 120.

[0096] In some embodiments, the second limiting groove 130 has an inclined second guiding portion 131.

[0097] In some embodiments, the second limiting member 230 has an inclined second guiding portion 131.

[0098] In some embodiments, the second limiting member 230 and the second limiting groove 130 respectively have inclined second guiding portions 131.

[0099] As Figure 4 and Figure 9 shown, a first positioning portion 280 is provided on the inner wall of the cylinder body 200, and a second positioning portion 140 cooperating with the first positioning portion 280 is provided on the outer wall of the pull rod 100; when the first positioning portion 280 and the second positioning portion 140 are connected, the first limiting member 220 is aligned with the first limiting groove 120, and the second limiting member 230 is aligned with the second limiting groove 130. The first positioning portion 280 and the second positioning portion 140 are geometrically matched in a complementary manner to quickly position the first limiting member 220 and the first limiting groove 120, and the second limiting member 230 and the second limiting groove 130, thereby making the assembly of the pull rod 100 and the cylinder body 200 simpler.

[0100] In this embodiment, the first positioning portion 280 may be one of a protrusion and a groove, and the second positioning portion 140 may be the other of a protrusion and a groove, and this embodiment does not limit this.

[0101] The first positioning portion 280 and the second positioning portion 140 can be separated under force. The geometric matching of the first positioning portion 280 and the second positioning portion 140 is only for quickly positioning the first limiting member 220 and the first limiting groove 120, and the second limiting member 230 and the second limiting groove 130. By being able to be separated under force, the geometric matching of the first positioning portion 280 and the second positioning portion 140 does not affect the separation of the pull rod 100 from the cylinder body 200.

[0102] In an embodiment where the first positioning portion 280 is one of a protrusion and a groove and the second positioning portion 140 is the other of a protrusion and a groove, the protrusion is made of a rubber material. When the pull rod 100 is subjected to an external force of a certain magnitude, the protrusion can deform and separate from the groove to achieve the purpose that the first positioning portion 280 and the second positioning portion 140 can be separated under force.

[0103] Some embodiments of the present application provide an aircraft including a parachute automatic detachment mechanism.

[0104] The aircraft in this embodiment can be a drone, a glider, a fixed-wing aircraft, etc.

[0105] It should be noted that, in this document, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising one..." does not exclude the presence of additional identical elements in the process, method, article or device comprising such element.

[0106] In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the reverse order according to the functions involved. For example, the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. Additionally, the features described with reference to certain examples may be combined in other examples.

[0107] As described above, the above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention.

Claims

1. An automatic parachute release mechanism, characterized in that, Comprising: A cylinder body for connecting with an aircraft; the cylinder body has a channel penetrating along its own axis; A pull rod for connecting with a parachute; The pull rod is located within the channel; A first limiting member disposed near the top of the channel in the cylinder body and movable along the radial direction of the cylinder body; the first limiting member abuts and limits the pull rod to restrict the top of the pull rod from moving towards the bottom of the cylinder body; A second limiting member disposed near the bottom of the channel in the cylinder body and movable along the radial direction of the cylinder body; the second limiting member abuts and limits the pull rod to restrict the bottom of the pull rod from moving towards the top of the cylinder body; Wherein, the second limiting member is movable along the axial direction of the channel between a first position and a second position; during the process of the pull rod moving from the first position to the second position, the first limiting member moves axially away from the channel so that the first limiting member separates from the pull rod; after the pull rod moves from the second position to the first position, as the top of the pull rod moves towards the bottom of the cylinder body, the second limiting member moves axially away from the channel so that the second limiting member separates from the pull rod; The second limiting member includes a moving part and a abutting part; The moving part can move closer to or away from the axis of the channel, and the abutting part is slidably connected to the moving part through a second elastic member; the abutting part is movable along the axial direction of the channel between the first position and the second position.

2. The automatic parachute release mechanism according to claim 1, wherein, After the first limiting member separates from the pull rod, the first limiting member abuts and limits with the cylinder body; After the second limiting member separates from the pull rod, the second limiting member abuts and limits with the cylinder body.

3. The automatic parachute detachment mechanism according to claim 2, characterized in that, The first limiting member is provided with a first connecting part, and the cylinder body is provided with a second connecting part; after the first limiting member separates from the pull rod, the first connecting part is connected to the second connecting part so that the first limiting member abuts and limits with the cylinder body; The second limiting member is provided with a third connecting part, and the cylinder body is further provided with a fourth connecting part; after the second limiting member separates from the pull rod, the third connecting part is connected to the fourth connecting part so that the second limiting member abuts and limits with the cylinder body.

4. The automatic parachute detachment mechanism according to claim 3, characterized in that, The parachute automatic detachment mechanism further includes a separating member connected to the cylinder body and movable along the axial direction of the cylinder body; the separating member is used for contacting with the first limiting member and the second limiting member to separate the first connecting part and the second connecting part, and the third connecting part and the fourth connecting part.

5. The automatic parachute detachment mechanism according to claim 4, characterized in that, The separating member includes a contacting part and a driving part; The contacting part is disposed within the cylinder body and movable along the axial direction of the cylinder body; the contacting part is used for contacting with the first limiting member and the second limiting member to separate the first connecting part and the second connecting part, and the third connecting part and the fourth connecting part; The driving part is sleeved on the cylinder body, connected to the contacting part, and movable along the axial direction of the cylinder body.

6. The automatic parachute detachment mechanism according to claim 5, characterized in that, The first limiting member and the second limiting member are respectively connected to the cylinder body through first elastic members; And / or, a first inclined portion is provided at the contact position between the first limiting member and the contact portion; And / or, a second inclined portion is provided at the contact position between the second limiting member and the contact portion.

7. A parachute automatic detachment mechanism according to claim 1, characterized in that, A first limiting groove is provided on the pull rod corresponding to the first limiting member, and at least one contact surface of the first limiting groove and the first limiting member has an inclined first guiding portion; The pull rod is further provided with a second limiting groove corresponding to the second limiting member, and at least one contact surface of the second limiting groove and the abutting portion has an inclined second guiding portion.

8. A parachute automatic detachment mechanism according to claim 7, characterized in that, A first positioning portion is provided on the inner wall of the cylinder body, and a second positioning portion cooperating with the first positioning portion is provided on the outer wall of the pull rod; when the first positioning portion and the second positioning portion are connected, the first limiting member is aligned with the first limiting groove, and the second limiting member is aligned with the second limiting groove; The first positioning portion and the second positioning portion can be separated under force.

9. An aircraft, characterized in that, Comprising the parachute automatic detachment mechanism according to any one of claims 1-8.

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