Air bag hatch cover opening device

Abstract

The invention discloses an airbag hatch cover opening device which comprises a hatch cover plate provided with a locking hole. The mounting seat is provided with a through sliding hole; the locking piece is slidably mounted on the penetrating sliding hole of the mounting base, one end of the locking piece is used for being matched with the locking hole, the other end of the locking piece is used for being connected with the parachute mechanism through a rope, and the locking piece is further provided with a matching part; the elastic piece is arranged between the locking piece and the mounting seat; the linkage rod is provided with a first end and a second end, and the first end is matched with the matching part; the electric push rod is matched with the second end of the linkage rod, when the piston rod extends out, the linkage rod can be driven to rotate, and after the linkage rod rotates, the first end of the linkage rod is matched with the matching part, so that the locking piece moves towards the side away from the locking hole, and the locking part is separated from the locking hole. When the parachute mechanism cannot normally enable the locking part to be separated from the locking hole, reliable opening of the airbag hatch cover can be effectively guaranteed, and recovery work of the unmanned aerial vehicle is guaranteed.

Description

Technical Field

[0001] The invention relates to the field of unmanned aerial vehicles, and in particular to an airbag hatch opening device. Background Art

[0002] When recovering a drone (such as a target drone), the drone slows down by opening a parachute. In order to reduce the impact force, an airbag compartment is usually installed under the fuselage. During recovery, the airbag compartment cover is opened to inflate and deploy the airbag, thereby acting as a cushion.

[0003] The current method used is a mechanically linked airbag hatch opening method, which mainly uses front and rear cables in conjunction with front and rear motion mechanisms. When the parachute is opened through fuselage recovery, the recovery parachute is linked to the steel cable, and the steel cable drives the motion mechanism to achieve mechanical linkage opening of the airbag hatch.

[0004] At present, the cables and motion mechanisms of the mechanical linkage method are assembled manually, and there are influences from the manual assembly. For example, the front and rear travel of the steel cables are not coordinated due to the assembly. In addition, they are easy to become loose after use, and there is a situation where the airbag hatch cannot be opened normally. Summary of the invention

[0005] In view of the above problems, the present invention provides an air bag hatch opening device.

[0006] The technical solution adopted by the present invention is as follows:

[0007] An air bag hatch opening device, comprising:

[0008] A hatch cover plate, wherein the hatch cover plate has a locking hole;

[0009] A mounting seat, used for fixing in the fuselage of the UAV, and having a through sliding hole on the mounting seat;

[0010] A locking piece is slidably mounted on the through-sliding hole of the mounting seat, one end of the locking piece has a locking portion, the locking portion is used to cooperate with the locking hole, the other end of the locking piece is used to be connected to the parachute mechanism of the drone through a rope, and the locking piece also has a matching portion;

[0011] An elastic member, disposed between the locking member and the mounting seat, and used to make the locking member have a movement tendency to move toward one side of the locking hole;

[0012] A linkage rod is rotatably disposed in the fuselage of the UAV, the linkage rod having a first end and a second end, the first end of the linkage rod being used to cooperate with the matching portion of the locking member;

[0013] The electric push rod is used to be installed in the fuselage of the drone. The piston rod of the electric push rod cooperates with the second end of the linkage rod. When the piston rod is extended, it can drive the linkage rod to rotate. After the linkage rod rotates, the first end of the linkage rod cooperates with the matching part, so that the locking piece moves to the side away from the locking hole, so that the locking part disengages from the locking hole.

[0014] Compared with the prior art that unlocks by pulling the locking part through the linkage of the parachute mechanism, the present application adds a linkage rod and an electric push rod. When the rope travel is not coordinated before and after assembly or becomes loose after use, the parachute mechanism cannot normally disengage the locking part from the locking hole after opening. The present application can drive the linkage rod to rotate through the electric push rod. After the linkage rod rotates, the first end of the linkage rod cooperates with the matching part to move the locking part to the side away from the locking hole, so that the locking part disengages from the locking hole. The present application can effectively ensure the reliable opening of the airbag hatch and ensure the recovery of the drone.

[0015] The present application can also simplify the assembly process of the drone by providing an electric push rod. By controlling the piston rod of the electric push rod to extend, the locking part disengages from the locking hole, and the hatch cover can be opened and closed normally. When the hatch cover is closed, it is only necessary to control the piston rod of the electric push rod to retract, and under the action of the elastic member, the locking part can extend into the locking hole to lock the hatch cover.

[0016] In one embodiment of the present invention, an end of the locking member away from the locking portion has an anti-slip portion, and the anti-slip portion is used to prevent the locking member from slipping out of the through-sliding hole.

[0017] In one embodiment of the present invention, the axis of the electric push rod is parallel to the axis passing through the sliding hole; the rotation axis of the linkage rod is perpendicular to the axis of the electric push rod.

[0018] In the initial state, the distance between the force center point of the first end and the mating part and the rotation axis of the linkage rod is a, and the distance between the force point of the piston rod and the locking piece and the rotation axis of the linkage rod is b. In actual use, in order to ensure that the linkage rod has a larger force to drive the locking piece to move, b is greater than a, and further the ratio of b to a is between 1.2 and 3.

[0019] In one embodiment of the present invention, the second end of the linkage rod has a limiting groove, and the piston rod of the electric push rod extends into the limiting groove.

[0020] The limiting groove can limit the piston rod so that the two can cooperate better.

[0021] In one embodiment of the present invention, the linkage rod has first mounting holes spaced apart along the length direction of the linkage rod;

[0022] It also includes a fixing seat for fixing in the fuselage of the drone, the fixing seat having a plurality of second mounting holes arranged at intervals, the second mounting holes corresponding to the first mounting holes one by one;

[0023] The linkage rod is rotatably mounted on the fixing seat via a rotating shaft, and the rotating shaft is used to selectively penetrate the corresponding first mounting hole and the second mounting hole.

[0024] This arrangement can adjust the position of the rotation axis as needed, thereby changing the ratio of b to a, which can improve the applicability of the solution of the present application and can be adapted to drones of different sizes or types.

[0025] In one embodiment of the present invention, the locking member has a driven portion, and the elastic member is a spring. The spring is sleeved on the locking member, and one end of the spring abuts against the mounting seat, and the other end abuts against the driven portion.

[0026] In one embodiment of the present invention, the matching portion is located below the driven portion.

[0027] In one embodiment of the present invention, the mounting seat has a trigger sensor, and the driven portion has a trigger portion. When the locking member moves and the locking portion is disengaged from the locking hole, the trigger portion can trigger the trigger sensor.

[0028] The trigger sensor and the trigger part cooperate to provide feedback on whether the locking part is out of the locking hole. In actual use, it can be set as follows:

[0029] When the parachute mechanism of the drone is opened, if the trigger sensor is triggered, it means that the locking part has normally disengaged from the locking hole, that is, the hatch cover can be opened, and the electric push rod does not work at this time; when the parachute mechanism of the drone is opened, if the trigger sensor is not triggered, it means that the locking part has not disengaged from the locking hole, and the electric push rod works at this time, and drives the locking part to move through the rotation of the linkage rod, and finally disengages the locking part from the locking hole.

[0030] In one embodiment of the present invention, the trigger sensor is a mechanical switch.

[0031] In one embodiment of the present invention, the trigger sensor is a Hall sensor, and the trigger portion has a magnet.

[0032] The beneficial effect of the present invention is that compared with the prior art that unlocks by pulling the locking member through the linkage of the parachute mechanism, the present application adds a linkage rod and an electric push rod. When the rope travel is not coordinated before and after assembly or becomes loose after use, the parachute mechanism cannot normally disengage the locking part from the locking hole after opening. The present application can drive the linkage rod to rotate through the electric push rod. After the linkage rod rotates, the first end of the linkage rod cooperates with the matching part to move the locking member to the side away from the locking hole, so that the locking part disengages from the locking hole. The present application can effectively ensure the reliable opening of the airbag hatch and ensure the recovery of the drone. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is a schematic diagram of an airbag hatch opening device according to Embodiment 1;

[0034] Figure 2 is a schematic diagram of the airbag hatch opening device of Example 1 from another angle;

[0035] Figure 3 yes Figure 2 The enlarged view of point A in the middle;

[0036] Figure 4 is a schematic diagram of an air bag hatch opening device according to Embodiment 2;

[0037] Figure 5 yes Figure 4 Enlarged view of point B in the middle.

[0038] The reference numerals in the figures are:

[0039] 1. Hatch cover; 11. Locking hole; 2. Mounting seat; 21. Through-sliding hole; 22. Trigger sensor; 3. Locking piece; 31. Locking part; 32. Anti-slip part; 33. Rope; 34. Matching part; 35. Driven part; 351. Trigger part; 4. Elastic piece; 5. Linkage rod; 51. First end; 52. Second end; 53. Limiting groove; 54. First mounting hole; 6. Electric push rod; 61. Piston rod; 7. Fixed seat; 71. Second mounting hole; 8. Rotating shaft. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0041] In the description of this application, it should be noted that the terms "inside", "outside", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the application is usually placed when in use, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0042] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "disposed" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0043] The present invention is described in detail below in conjunction with the accompanying drawings.

[0044] Example 1

[0045] like Figures 1 to 3 As shown, an air bag hatch opening device comprises:

[0046] A hatch cover plate 1, wherein the hatch cover plate 1 has a locking hole 11;

[0047] A mounting seat 2, used for fixing in the fuselage of the UAV, and having a through-sliding hole 21 on the mounting seat 2;

[0048] The locking member 3 is slidably mounted on the through-sliding hole 21 of the mounting seat 2. One end of the locking member 3 has a locking portion 31, and the locking portion 31 is used to cooperate with the locking hole 11. The other end of the locking member 3 is used to be connected to the parachute mechanism of the drone through a rope 33. The locking member 3 also has a matching portion 34.

[0049] The elastic member 4 is arranged between the locking member 3 and the mounting seat 2, and is used to make the locking member 3 have a movement tendency to move toward the locking hole 11;

[0050] The linkage rod 5 is rotatably disposed in the fuselage of the UAV, and the linkage rod 5 has a first end 51 and a second end 52. The first end 51 of the linkage rod 5 is used to cooperate with the matching portion 34 of the locking member 3;

[0051] The electric push rod 6 is used to be installed in the fuselage of the drone. The piston rod 61 of the electric push rod 6 cooperates with the second end 52 of the linkage rod 5. When the piston rod 61 is extended, it can drive the linkage rod 5 to rotate. After the linkage rod 5 rotates, the first end 51 of the linkage rod 5 cooperates with the matching portion 34, so that the locking piece 3 moves to the side away from the locking hole 11, so that the locking portion 31 disengages from the locking hole 11.

[0052] Compared with the prior art that unlocks the lock 3 by pulling the lock member 3 through the linkage of the parachute mechanism, the present application adds a linkage rod 5 and an electric push rod 6. When the rope 33 is not coordinated in the front and rear travel due to assembly or becomes loose after use, the parachute mechanism cannot normally disengage the lock part 31 from the lock hole 11 after opening. The present application can drive the linkage rod 5 to rotate through the electric push rod 6. After the linkage rod 5 rotates, the first end 51 of the linkage rod 5 cooperates with the matching part 34 to move the lock member 3 to the side away from the lock hole 11, so that the lock part 31 is disengaged from the lock hole 11. The present application can effectively ensure the reliable opening of the airbag hatch and ensure the recovery of the drone.

[0053] The present application can also simplify the assembly process of the UAV by providing an electric push rod 6. By controlling the piston rod 61 of the electric push rod 6 to extend, the locking portion 31 disengages from the locking hole 11, and the hatch cover 1 can be opened and closed normally. When the hatch cover 1 is closed, it is only necessary to control the piston rod 61 of the electric push rod 6 to contract. Under the action of the elastic member 4, the locking portion 31 can extend into the locking hole 11 to lock the hatch cover 1.

[0054] like Figure 1 and 2 As shown, in this embodiment, one end of the locking member 3 away from the locking portion 31 has an anti-slip portion 32 , and the anti-slip portion 32 is used to prevent the locking member 3 from slipping out of the through sliding hole 21 .

[0055] In this embodiment, the axis of the electric push rod 6 is parallel to the axis passing through the sliding hole 21 ; the rotation axis 8 of the linkage rod 5 is perpendicular to the axis of the electric push rod 6 .

[0056] In the initial state, the distance between the force center point of the first end 51 and the matching part 34 and the rotation axis 8 line of the linkage rod 5 is a, and the distance between the force point of the piston rod 61 and the locking member 3 and the rotation axis 8 line of the linkage rod 5 is b. In actual use, in order to ensure that the linkage rod 5 has a larger force to drive the locking member 3 to move, b is greater than a, and further, the ratio of b to a is between 1.2 and 3.

[0057] like Figure 3 As shown, in this embodiment, the second end 52 of the linkage rod 5 has a limiting groove 53, and the piston rod 61 of the electric push rod 6 extends into the limiting groove 53. The limiting groove 53 can limit the piston rod 61, so that the two can cooperate better.

[0058] like Figure 1 and 3 As shown, in this embodiment, the locking member 3 has a driven portion 35 , and the elastic member 4 is a spring. The spring is sleeved on the locking member 3 , and one end of the spring abuts against the mounting seat 2 , and the other end abuts against the driven portion 35 .

[0059] like Figure 3 As shown, in this embodiment, the matching portion 34 is located below the driven portion 35 .

[0060] like Figure 1 and 3 As shown, in this embodiment, the mounting seat 2 has a trigger sensor 22 , and the driven portion 35 has a trigger portion 351 . When the locking member 3 moves and the locking portion 31 is disengaged from the locking hole 11 , the trigger portion 351 can trigger the trigger sensor 22 .

[0061] The trigger sensor 22 cooperates with the trigger part 351 to provide feedback on whether the locking part 31 is out of the locking hole 11. In actual use, it can be set as follows:

[0062] When the parachute mechanism of the UAV is opened, if the trigger sensor 22 is triggered, it means that the locking part 31 is normally disengaged from the locking hole 11, that is, the hatch cover 1 can be opened, and the electric push rod 6 does not work at this time; when the parachute mechanism of the UAV is opened, if the trigger sensor 22 is not triggered, it means that the locking part 31 is not disengaged from the locking hole 11, and the electric push rod 6 works at this time, and drives the locking part 3 to move through the rotation of the linkage rod 5, and finally makes the locking part 31 disengage from the locking hole 11.

[0063] In actual use, the trigger sensor 22 can be a mechanical switch. In other embodiments, the trigger sensor 22 can also be a Hall sensor, and in this case, the trigger portion 351 has a magnet.

[0064] Example 2

[0065] like Figure 4 and 5 As shown, the difference between this embodiment and embodiment 1 is that: the linkage rod 5 has first mounting holes 54 arranged at intervals along the length direction of the linkage rod 5;

[0066] It also includes a fixing seat 7 for fixing in the fuselage of the drone, and the fixing seat 7 has a plurality of second mounting holes 71 arranged at intervals, and the second mounting holes 71 correspond to the first mounting holes 54 one by one;

[0067] The linkage rod 5 is rotatably mounted on the fixing seat 7 via a rotating shaft 8 , and the rotating shaft 8 is used to selectively penetrate the corresponding first mounting hole 54 and the second mounting hole 71 .

[0068] The configuration of the present application can adjust the position of the rotating shaft 8 as needed, thereby changing the ratio of b and a, which can improve the applicability of the solution of the present application and can be adapted to drones of different sizes or types.

[0069] The above description is only a preferred embodiment of the present invention, and does not limit the patent protection scope of the present invention. Any equivalent structural transformation made by using the contents of the present invention and the drawings, directly or indirectly used in other related technical fields, is also included in the protection scope of the present invention.

Claims

1. An airbag hatch opening device, characterized in that: include: A hatch cover plate, wherein the hatch cover plate has a locking hole; A mounting seat, used for fixing in the fuselage of the UAV, and having a through sliding hole on the mounting seat; A locking piece is slidably mounted on the through-sliding hole of the mounting seat, one end of the locking piece has a locking portion, the locking portion is used to cooperate with the locking hole, the other end of the locking piece is used to be connected to the parachute mechanism of the drone through a rope, and the locking piece also has a matching portion; An elastic member, disposed between the locking member and the mounting seat, and used to make the locking member have a movement tendency to move toward one side of the locking hole; A linkage rod is rotatably disposed in the fuselage of the UAV, the linkage rod having a first end and a second end, the first end of the linkage rod being used to cooperate with the matching portion of the locking member; The electric push rod is used to be installed in the fuselage of the drone. The piston rod of the electric push rod cooperates with the second end of the linkage rod. When the piston rod is extended, it can drive the linkage rod to rotate. After the linkage rod rotates, the first end of the linkage rod cooperates with the matching part, so that the locking piece moves to the side away from the locking hole, so that the locking part disengages from the locking hole.

2. The airbag hatch opening device according to claim 1, characterized in that: An end of the locking piece away from the locking portion is provided with an anti-slip portion, and the anti-slip portion is used to prevent the locking piece from slipping out of the through-sliding hole.

3. The air bag hatch opening device according to claim 1, characterized in that: The axis of the electric push rod is parallel to the axis passing through the sliding hole; the rotation axis of the linkage rod is perpendicular to the axis of the electric push rod.

4. The air bag hatch opening device according to claim 3, characterized in that: The second end of the linkage rod is provided with a limiting groove, and the piston rod of the electric push rod extends into the limiting groove.

5. The air bag hatch opening device according to claim 3, characterized in that: The linkage rod is provided with first mounting holes spaced apart along the length direction of the linkage rod; It also includes a fixing seat for fixing in the fuselage of the drone, the fixing seat having a plurality of second mounting holes arranged at intervals, the second mounting holes corresponding to the first mounting holes one by one; The linkage rod is rotatably mounted on the fixing seat via a rotating shaft, and the rotating shaft is used to selectively penetrate the corresponding first mounting hole and the second mounting hole.

6. The air bag hatch opening device according to claim 1, characterized in that: The locking member has a driven portion, and the elastic member is a spring. The spring is sleeved on the locking member, and one end of the spring abuts against the mounting seat, and the other end abuts against the driven portion.

7. The air bag hatch opening device according to claim 6, characterized in that: The matching portion is located below the driven portion.

8. The air bag hatch opening device according to claim 6, characterized in that: The mounting seat is provided with a trigger sensor, and the driven part is provided with a trigger part. When the locking member moves and the locking part is separated from the locking hole, the trigger part can trigger the trigger sensor.

9. The air bag hatch opening device according to claim 8, characterized in that: The trigger sensor is a mechanical switch.

10. The air bag hatch opening device according to claim 8, characterized in that: The trigger sensor is a Hall sensor, and the trigger part is provided with a magnet.

Images