Automatic parachute falling mechanism and aircraft

Abstract

The invention relates to the technical field of parachute separation, and discloses an automatic parachute falling mechanism and an aircraft. The automatic parachute falling-off mechanism comprises a cylinder used for being connected with an aircraft; the cylinder body is provided with a channel penetrating in the axial direction of the cylinder body; the pull rod is connected with a parachute; the pull rod is positioned in the channel; the first limiting piece is arranged on the barrel close to the top of the channel and can move in the radial direction of the barrel; the first limiting piece abuts against the pull rod for limiting the top of the pull rod to move towards the bottom of the barrel; the bottom, close to the channel, of the second limiting piece is arranged on the barrel and can move in the radial direction of the barrel; the second limiting piece abuts against the pull rod and is used for limiting the bottom of the pull rod to move towards the top of the barrel. The aircraft comprises the automatic parachute falling mechanism. By means of the scheme, the technical problem that in the prior art, a limiting mechanism between the connecting pull rod and the barrel cannot be repeatedly used can be solved.

Description

Technical Field

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

[0002] After the parachute completes its mission (such as after the carrier aircraft lands), 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 personal injury. Therefore, existing aircraft are mostly provided with a parachute detachment mechanism to separate the parachute 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 completes 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 a parachute automatic 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: In a first aspect, the present application discloses a parachute automatic detachment mechanism, including: 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 in the channel; A first limiting member disposed on the cylinder body near the top of the channel and movable along the radial direction of 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; A second limiting member disposed on the cylinder body near the bottom of the channel and movable along the radial direction of 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; 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 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.

[0006] In some solutions, after the first limiting member separates from the pull rod, the first limiting member abuts against and limits the cylinder body; After the second limiting member is separated from the pull rod, the second limiting member abuts against and limits the cylinder body.

[0007] 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 against and limits the cylinder body; 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 against and limits the cylinder body.

[0008] In some solutions, the parachute automatic detachment mechanism further includes a separating member, which 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.

[0009] In some solutions, the separating member includes a contact portion and a driving portion; 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; The driving portion is sleeved on the cylinder body, connected to the contact portion, and can move axially along the cylinder body.

[0010] In some solutions, 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.

[0011] In some solutions, the second limiting member includes a moving portion and a stopping portion; The moving portion can move closer to or away from the axis of the channel, and the stopping portion is slidably connected to the moving portion through a second elastic member; the stopping portion can move axially between a first position and a second position along the channel.

[0012] 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; 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 portion has an inclined second guiding portion.

[0013] In some solutions, 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.

[0014] In a second aspect, the present application also discloses an aircraft, including the parachute automatic detachment mechanism in the first aspect.

[0015] The technical solution adopted by the present invention can achieve the following beneficial effects: In 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 abut 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 axial direction of the channel and separates from the pull rod, and the second limiting member continues to abut 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 axial direction 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 after the first limiting block and the second limiting block separate from the pull rod, they will not fall off from the cylinder body but remain in the cylinder body. When reinstalling the pull rod and the cylinder body, only need to move the first limiting block and the second limiting block and abut and limit them with the pull rod to reuse. Description of the Drawings

[0016] In order 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 use in the description of the embodiments or the prior art. Obviously, the following drawings 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.

[0017] Figure 1 is an axonometric view of the parachute automatic detachment mechanism disclosed in some embodiments of the present application; Figure 2 is a schematic diagram of the working state of the parachute automatic detachment mechanism disclosed in some embodiments of the present application Figure 1 ; Figure 3 is a schematic diagram of the working state of the parachute automatic detachment mechanism disclosed in some embodiments of the present applicationFigure 2 ; Figure 4 is Figure 3 an enlarged view of location A in Figure 5 a schematic diagram of the working state of the parachute automatic detachment mechanism disclosed in some embodiments of the present application Figure 3 ; Figure 6 a schematic diagram of the working state of the parachute automatic detachment mechanism disclosed in some embodiments of the present application Figure 4 ; Figure 7 is an axonometric view of the second limiting member disclosed in some embodiments of the present application; Figure 8 is a sectional view of the second limiting member disclosed in some embodiments of the present application; Figure 9 is an axonometric view of the pull rod disclosed in some embodiments of the present application; Figure 10 is a sectional view of the parachute automatic detachment mechanism disclosed in some embodiments of the present application Figure 1 ; Figure 11 is a sectional view of the parachute automatic detachment mechanism disclosed in some embodiments of the present application Figure 2 .

[0018] In the figure: 100 - pull rod, 110 - first connection hole, 120 - first limiting groove, 121 - first guiding portion, 130 - second limiting groove, 131 - second guiding portion, 140 - second positioning portion; 200 - cylinder, 210 - channel, 220 - first limiting member, 221 - first inclined portion, 222 - first connection portion, 230 - second limiting member, 231 - moving portion, 2311 - second inclined portion, 2312 - third connection portion, 232 - abutting portion, 233 - second elastic member, 240 - first elastic member, 250 - second connection hole, 260 - second connection portion, 270 - fourth connection portion, 280 - first positioning portion; 300 - separating member, 310 - driving portion, 320 - contacting portion. Specific Embodiments

[0019] 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 a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0020] 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 the data used in this way 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 herein, and the objects distinguished by "first", "second", etc. are generally of the same category, and do not limit the number of objects. For example, the first object can be one or more. 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.

[0021] In use, the inventor found that the existing parachute release 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 completes its mission, the limiting mechanism falls off, and the pull rod naturally separates from the cylinder body, so that the parachute falls off. At present, the common ways for the limiting mechanism to fall off include mechanical trigger type release, pyrotechnic device release, etc., which will cause damage to the limiting mechanism, and the limiting mechanism will detach from the cylinder body, resulting in the inability to reuse the limiting mechanism.

[0022] The following combines the attached Figures 1 to 11 to illustrate in detail a parachute automatic release mechanism and an aircraft provided by this application through specific embodiments and their application scenarios.

[0023] Some embodiments of this application provide a parachute automatic release 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.

[0024] 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.

[0025] As Figure 1 、 Figure 2 、 Figure 3 、 Figure 5 and Figure 6 shown, the pull rod 100 is used to connect to the parachute, and the cylinder body 200 is used to connect to the aircraft. Since the pull rod 100 can be cooperatively connected to 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.

[0026] 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 achieved through the first connection hole 110.

[0027] 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 achieved through the second connection cylinder.

[0028] 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, so as 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 separates from the cylinder body 200 under the action of gravity can be avoided.

[0029] As Figure 1 、 Figure 2 、 Figure 3 、 Figure 5 and Figure 6 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 is opened, 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.

[0030] As Figure 1 、 Figure 2 、 Figure 3 、 Figure 5 、 Figure 6 and Figure 10 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.

[0031] As Figure 1 、 Figure 2 、 Figure 3 、Figure 5 , Figure 6 and Figure 11 As shown in Figure 5 , Figure 6 and Figure 11 , the second limiting member 230 can also 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 is separated 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.

[0032] 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 arranged in the guiding groove, so that the first limiting member 220 and the second limiting member 230 move along a fixed track.

[0033] As Figure 2 , Figure 3 , Figure 5 and Figure 6 As shown in Figure 2 , Figure 3 , Figure 5 and Figure 6 , 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 and drives 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 body 200, thereby ensuring that during the operation of the parachute, the pull rod 100 will not be separated from the cylinder body 200 due to the pulling force of the parachute.

[0034] 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 stops and limits the second limiting member 230 to restrict the continuous 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 to avoid excessive force on the second limiting member 230.

[0035] As Figure 2 and Figure 3 As shown in Figure 2 and Figure 3 , 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 parachute is opened, the pull rod 100 is subjected to the pulling force of the parachute, and 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 the direction away from the axial direction of the channel 210 and is separated from the pull rod 100, and the second limiting member 230 continues to stop and limit the pull rod 100 at the second position, so that the pull rod 100 will not fall off from the cylinder body 200, so that the pulling force generated by the parachute acts on the aircraft.

[0036] AsFigure 3 and Figure 5 As shown in Figure 5 , 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 the direction axially away from 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.

[0037] As Figure 3 shown, after the first limiting member 220 separates from the pull rod 100, the first limiting member 220 abuts and limits against 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 separates from the pull rod 100. After the first limiting member 220 separates from the pull rod 100, the first limiting member 220 abuts and limits against 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.

[0038] As Figure 5 and Figure 6 shown, after the second limiting member 230 separates from the pull rod 100, the second limiting member 230 abuts and limits against 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 separates from the pull rod 100. After the second limiting member 230 separates from the pull rod 100, the second limiting member 230 abuts and limits against 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.

[0039] Since the first limiting block and the second limiting block are not damaged structurally after separating 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 separating from the pull rod 100, when reinstalling the pull rod 100 and the cylinder body 200, it is only necessary to move the first limiting block and the second limiting block and abut and limit them against the pull rod 100 for reuse.

[0040] In this embodiment, the number of the first limiting block and the second limiting block can be 1, 2, 3, 4 or more, and can be flexibly set according to actual usage requirements, and this embodiment does not make any limitation thereto.

[0041] Among them, in embodiments where there are multiple first limiting blocks and second limiting blocks, the multiple first limiting blocks and multiple second limiting blocks are arranged at intervals along the circumferential direction of the channel 210, so that the first limiting blocks and the second limiting blocks have a better effect of stopping and limiting the pull rod 100.

[0042] As Figure 10 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 abuts and limits against the cylinder body 200. 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.

[0043] 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 and slot structure, etc., which can be flexibly set according to the use requirements, and this embodiment does not make a limitation thereto.

[0044] 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 abuts and limits against the cylinder body 200. 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.

[0045] 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 and slot structure, etc., which can be flexibly set according to the use requirements, and this embodiment does not make a limitation thereto.

[0046] As Figure 2 、 Figure 3 and Figure 5As 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 and the cylinder body 200 are reinstalled, by moving the separating member 300, the separating member 300 contacts 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 against the pull rod 100 for limiting.

[0047] 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 arranged inside the cylinder body 200 and can move axially along the cylinder body 200. When the contact portion 320 moves axially along the cylinder body 200 toward the top of the cylinder body 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 separated by force, thereby causing the first limiting member 220 to move axially toward the channel 210 and abut against the pull rod 100 for limiting. When the contact portion 320 moves axially along the cylinder body 200 toward the bottom of the cylinder body 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 separated by force, thereby causing the second limiting member 230 to move axially toward the channel 210 and abut against the pull rod 100 for limiting.

[0048] It should be noted that in the 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.

[0049] In this embodiment, a chute axially penetrating the cylinder body 200 is provided inside the cylinder body 200, and the contact portion 320 is slidably arranged in the chute.

[0050] As Figure 1 , Figure 2 , Figure 3 and Figure 5 shown, the driving portion 310 is sleeved on the cylinder body 200, connected to the contact portion 320, and can move axially along the cylinder body 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 body 200.

[0051] As Figure 2 , Figure 3 andFigure 5 As shown, the first limiting member 220 and the second limiting member 230 are respectively connected to the cylinder 200 through the first elastic member 240. After the separation of the first connecting portion 222 and the second connecting portion 260, and after the separation of the third connecting portion 2312 and the fourth connecting portion 270, under the action of the first elastic member 240, the first limiting member 220 and the second limiting member 230 can quickly return to their original positions and stop against and limit the pull rod 100.

[0052] It should be noted that when the first connecting portion 222 and the second connecting portion 260 are connected, and when the third connecting portion 2312 and the fourth connecting portion 270 are connected, 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 stop against and limit the cylinder 200.

[0053] In this embodiment, the first elastic member 240 is preferably a spring.

[0054] As Figure 2 、 Figure 3 and Figure 5 shown, a first inclined portion 221 is provided at the contact position between the first limiting member 220 and the contact portion 320. By providing the first inclined portion 221 at the contact position between the first limiting member 220 and the contact portion 320, when the contact portion 320 contacts the first limiting member 220, the first inclined portion 221 can better decompose the axial force into a radial force to reduce the force required to separate the first connecting portion 222 and the second connecting portion 260.

[0055] As Figure 2 、 Figure 3 、 Figure 5 、 Figure 7 and Figure 8 shown, a second inclined portion 2311 is provided at the contact position between the second limiting member 230 and the contact portion 320. By providing the second inclined portion 2311 at the contact position between the second limiting member 230 and the contact portion 320, when the contact portion 320 contacts the second limiting member 230, the second inclined portion 2311 can better decompose the axial force into a radial force to reduce the force required to separate the third connecting portion 2312 and the fourth connecting portion 270.

[0056] As 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.

[0057] It should be noted that when the stopping portion 232 is in the first position, the stopping portion 232 will 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 a 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.

[0058] As Figure 8 shown, the stopping portion 232 and the moving portion 231 are slidably connected by 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.

[0059] In this embodiment, the second elastic member 233 is preferably a spring.

[0060] 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.

[0061] 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 to disengage from the first limiting groove 120 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 axially move 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.

[0062] In some embodiments, the first limiting groove 120 has an inclined first guiding portion 121.

[0063] In some embodiments, the first limiting member 220 has an inclined first guiding portion 121.

[0064] In some embodiments, the first limiting member 220 and the first limiting groove 120 respectively have an inclined first guiding portion 121.

[0065] 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.

[0066] 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 to disengage from the second limiting groove 130 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 axially move 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.

[0067] In some embodiments, the second limiting groove 130 has an inclined second guiding portion 131.

[0068] In some embodiments, the second limiting member 230 has an inclined second guiding portion 131.

[0069] In some embodiments, the second limiting member 230 and the second limiting groove 130 respectively have inclined second guiding portions 131.

[0070] 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 with each other to quickly position the first limiting member 220 and the first limiting groove 120, as well as the second limiting member 230 and the second limiting groove 130, so that the assembly of the pull rod 100 and the cylinder body 200 is simpler.

[0071] 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. This embodiment does not limit this.

[0072] 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 to achieve the quick positioning of the first limiting member 220 and the first limiting groove 120, as well as the second limiting member 230 and the second limiting groove 130. By the fact that 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 will not affect the separation of the pull rod 100 and the cylinder body 200.

[0073] 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.

[0074] Some embodiments of the present application provide an aircraft, including a parachute automatic detachment mechanism.

[0075] The aircraft in this embodiment may be a drone, a glider, a fixed-wing aircraft, etc.

[0076] It should be noted that in this text, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, such that a process, method, article or apparatus comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or apparatus. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or apparatus comprising that element.

[0077] In addition, it should be pointed out that the scope of the methods and apparatuses 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.

[0078] 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. A parachute automatic shedding mechanism, characterized in that: include: A cylinder body, used for connecting with the aircraft; the cylinder body has a passage penetrating along its own axial direction; A pull rod for connecting with the parachute; The pull rod is located in the channel; A first stopper is provided on the cylinder near the top of the channel and can move radially along the cylinder; the first stopper abuts against the pull rod to limit the top of the pull rod from moving toward the bottom of the cylinder; A second stopper is disposed on the cylinder near the bottom of the channel and can move radially along the cylinder; the second stopper is abutted against the pull rod to limit the bottom of the pull rod from moving toward the top of the cylinder; In which, the second limit member can move between the first position and the second position along the axial direction of the channel; in the process of the pull rod moving from the first position to the second position, the first limit member moves away from the axial direction of the channel to separate the first limit member 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 toward the bottom of the cylinder, the second limit member moves away from the axial direction of the channel to separate the second limit member from the pull rod.

2. The automatic parachute shedding mechanism according to claim 1, characterized in that: After the first limiting member is separated from the pull rod, the first limiting member and the cylinder body are stopped and limited; After the second position-limiting member is separated from the pull rod, the second position-limiting member and the cylinder body are stopped and limited.

3. The automatic parachute shedding mechanism according to claim 2, characterized in that: The first position-limiting member is provided with a first connection portion, and the cylinder is provided with a second connection portion; after the first position-limiting member is separated from the pull rod, the first connection portion is connected to the second connection portion, so that the first position-limiting member and the cylinder are stopped and limited; The second position-limiting member is provided with a third connection portion, and the cylinder is further provided with a fourth connection portion; after the second position-limiting member is separated from the pull rod, the third connection portion is connected to the fourth connection portion so that the second position-limiting member and the cylinder are stopped and limited.

4. The automatic parachute shedding mechanism according to claim 3, characterized in that: The automatic parachute shedding mechanism also includes a separating piece, which is connected to the cylinder and can move along the axial direction of the cylinder; the separating piece is used to contact the first limiting piece and the second limiting piece 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 shedding mechanism according to claim 4, characterized in that: The separating member comprises a contact portion and a driving portion; The contact portion is disposed in the cylinder and can move along the axial direction of the cylinder; the contact portion is used to contact the first stopper and the second stopper to separate the first connection portion and the second connection portion, and the third connection portion and the fourth connection portion; The driving part is sleeved on the cylinder, connected to the contact part, and can move along the axial direction of the cylinder.

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

7. The automatic parachute shedding mechanism according to claim 1, characterized in that: The second limiting member includes a moving portion and a stop portion; The moving part can move closer to or away from the axis of the channel, and the stop part is slidably connected to the moving part via a second elastic member; the stop part can move between the first position and the second position along the axial direction of the channel.

8. The automatic parachute shedding mechanism according to claim 7, characterized in that: The pull rod is provided with a first limiting groove corresponding to the first limiting member, and at least one contact surface between the first limiting groove and the first limiting member has an inclined first guide portion; The pull rod is further provided with a second limiting groove corresponding to the second limiting member, and at least one contact surface between the second limiting groove and the stop portion has an inclined second guiding portion.

9. The automatic parachute shedding mechanism according to claim 8, characterized in that: The inner wall of the cylinder is provided with a first positioning portion, and the outer wall of the pull rod is provided with a second positioning portion that matches 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; The first positioning portion and the second positioning portion can be separated by force.

10. An aircraft, characterized in that: It comprises the automatic parachute shedding mechanism as claimed in any one of claims 1 to 9.

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