Buffer structure of unmanned aerial vehicle

Abstract

The utility model discloses an unmanned aerial vehicle buffer structure, belongs to the technical field of unmanned aerial vehicles, and aims to solve the problem that an unmanned aerial vehicle is easy to damage due to impact in the process of landing on the ground. Comprising foot stools arranged at the bottoms of the two ends of a longitudinal rod of the unmanned aerial vehicle, and each foot stool comprises a supporting rod, a connecting rod and a movable rod; the top end of the supporting rod is hinged to the bottom of the longitudinal rod, and the bottom end of the supporting rod is movably connected with a movable rod through a telescopic mechanism in the axial direction. The top end of the connecting rod is hinged to the bottom of the longitudinal rod, and the bottom end of the connecting rod is hinged to the supporting rod. The supporting rods are hinged to the connecting rods, and the supporting rods are telescopically connected with the movable rods, so that in the landing process of the unmanned aerial vehicle, the movable rods are extruded through deflection of the supporting rods, the connecting rods are driven to stretch out, draw back and rotate, and the movable rods buffer vertical impact through the telescopic mechanisms. Good buffering performance is achieved, and the problem that the unmanned aerial vehicle is prone to damage due to impact in the process of landing on the ground is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of unmanned aerial vehicles, specifically an unmanned aerial vehicle buffer structure. Background Art

[0002] An unmanned aerial vehicle is an unpiloted aircraft controlled by a radio remote control device or an on-board computer program control system. The unmanned aerial vehicle has a simple structure and low use cost, and is suitable for tasks that manned aircraft are not suitable for. It is now mostly used in fields such as plant protection, disaster relief, mapping, news reporting, and film shooting.

[0003] An unmanned aerial vehicle generally includes an unmanned aerial vehicle body, a cross bar fixedly mounted in the middle of the unmanned aerial vehicle body, and longitudinal bars fixedly mounted at both ends of the cross bar; the cross bar and the longitudinal bars are on the same horizontal plane and are perpendicular to each other; wings are mounted on the tops of both ends of the longitudinal bars; feet are respectively arranged at the bottoms of both ends of the longitudinal bars. Currently, most unmanned aerial vehicles use fixed inclined feet. Due to the lack of a good buffer structure, the unmanned aerial vehicle is damaged during the process of landing on the ground. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a buffer device for an unmanned aerial vehicle to solve the problem that the unmanned aerial vehicle is easily damaged due to impact during the process of landing on the ground.

[0005] The unmanned aerial vehicle buffer structure includes feet arranged at the bottoms of both ends of the longitudinal bars of the unmanned aerial vehicle. The feet include support rods, connecting rods, and movable rods; the top end of the support rod is hinged to the bottom of the longitudinal bar, the bottom end of the support rod is movably connected to the movable rod along its axial direction through a telescopic mechanism, and the bottom end of the movable rod is connected to a roller; the top end of the connecting rod is hinged to the bottom of the longitudinal bar, and the bottom end is hinged to the support rod, and a triangle is formed by enclosing the longitudinal bar, the support rod, and the connecting rod.

[0006] Further, the telescopic mechanism includes a slider, a first damper, and a first telescopic spring; the slider is fixed to the top end of the movable rod; the first damper is installed between the top surface of the slider and the support rod, and the first telescopic spring is sleeved on the outer periphery of the first damper, and the bottom end is fixed to the slider and the top end is fixed to the support rod.

[0007] Further, a cavity penetrating the bottom end along its axial direction is arranged at the bottom of the support rod, and the top end of the movable rod is inserted into the cavity.

[0008] Further, a groove with an open bottom end is arranged on the longitudinal bar, and a strip plate, a second damper, and a second telescopic spring are arranged in the groove;

[0009] The strip plate is movably matched with the groove along the transverse direction of the groove; the second damper is arranged between the strip plate and one end wall of the groove, the second telescopic spring is sleeved on the outer periphery of the second damper, and one end is fixed to the end wall of the groove and the other end is fixed to the strip plate; the top end of the connecting rod is hinged to the bottom of the strip plate.

[0010] Furthermore, the roller is covered with a rubber layer.

[0011] Furthermore, both the support rod and the telescopic connecting rod are in an inclined state.

[0012] Furthermore, the two support rods on each longitudinal rod are symmetric about the perpendicular bisector of the longitudinal rod.

[0013] The beneficial effects of the present utility model are as follows: The disclosed drone buffer structure of the present utility model utilizes the hinge connection between the support rod and the connecting rod and the telescopic connection between the support rod and the movable rod. During the landing process of the drone, the deflection of the support rod squeezes the movable rod and drives the connecting rod to expand, contract, and rotate. The movable rod buffers the vertical impact through the telescopic mechanism.

[0014] The other end of the connecting rod is hinged to the strip board, and the strip board is movably connected to the longitudinal rod along the longitudinal rod, thereby buffering the lateral impact generated during the landing of the drone under the relative movement of the connecting rod, the longitudinal rod, and the support rod.

[0015] By covering the outside of the roller with rubber, the forces of the longitudinal and lateral impacts are further buffered, improving the stability of the drone during the landing process.

[0016] The good buffering performance solves the problem that the drone is prone to damage due to impact during the landing process on the ground, playing a protective role for the drone.

[0017] In addition, when the drone is packed after use, the support rod can be retracted inward, and at the same time, the connecting rod is stretched, making the overall volume smaller and facilitating storage and movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is the front view external structure diagram of the present utility model;

[0019] Figure 2 is the side view sectional structure diagram of the present utility model;

[0020] Figure 3 is the enlarged structure schematic diagram at A of the present utility model;

[0021] Figure 4 is the enlarged structure schematic diagram at B of the present utility model;

[0022] Figure 5 is the enlarged structure schematic diagram at C of the present utility model.

[0023] In the figure, the airframe 1, the sensor 2, the cross bar 3, the wing 4, the support rod 5, the connecting rod 6, the movable rod 7, the roller 8, the longitudinal rod 9, the first telescopic spring 10, the first damper 11, the slider 12, the strip board 13, the second telescopic spring 14, the second damper 15. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The following further describes the present utility model in conjunction with the accompanying drawings and embodiments as follows:

[0025] The "left", "right", "horizontal", "longitudinal", "vertical", "upper", "lower", "inner", "outer", etc. indicating directions in the present utility model are all based on their usage state positions, that is, the attached Figure 1 shown in the figure, and the orientation or positional relationship based on the attached Figure 1 shown in the figure is only for the convenience of describing the present utility model, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation to the present utility model.

[0026] The drone buffer structure, as Figures 1-5 shown in the figure, includes footrests provided at the bottoms of both ends of the longitudinal rod 9 of the drone. The footrests include support rods 5, connecting rods 6, and movable rods 7; the top end of the support rod 5 is hinged to the bottom of the longitudinal rod 9, the bottom end of the support rod 5 is movably connected to the movable rod 7 along its axial direction through a telescopic mechanism, and the bottom end of the movable rod 7 is connected to a roller 8; the top end of the connecting rod 6 is hinged to the bottom of the longitudinal rod 9, and the bottom end is hinged to the support rod 5, and a triangle is formed by enclosing the longitudinal rod 9, the support rod 5, and the connecting rod 6.

[0027] The bottom end of the support rod 5 is movably connected to the movable rod 7 along its axial direction through a telescopic mechanism, which means that under the telescopic action of the telescopic mechanism, the support rod 5 can move relative to the axial direction of the movable rod 7, that is, the overall rod formed by splicing the support rod 5 and the movable rod 7 through the telescopic mechanism can be telescopic. Thus, during the landing process of the drone, when the roller 8 touches the ground and is squeezed, the movable rod 7 can contract towards the support rod 5, playing a buffering role to avoid damage caused by a strong impact.

[0028] The top end of the support rod 5 is hinged to the bottom of the longitudinal rod 9, that is, the support rod 5 can rotate relative to the hinge point on the longitudinal rod 9. Thus, during the landing process of the drone, when the roller 8 touches the ground and is squeezed, the support rod 5 can deflect relative to the hinge point to play a buffering role.

[0029] The longitudinal rod 9, the support rod 5, and the connecting rod 6 enclose to form a triangle, ensuring the stability of the footrest.

[0030] The telescopic mechanism can be a scissor mechanism or the like. In this embodiment, preferably, the telescopic mechanism includes a slider 12, a first damper 11, and a first telescopic spring 10. The slider 12 is fixed to the top end of the movable rod 7. The first damper 11 is installed between the top surface of the slider 12 and the support rod 5. The first telescopic spring 10 is sleeved on the outer periphery of the first damper 11, with its bottom end fixed to the slider 12 and its top end fixed to the support rod 5. The first damper 11 can reduce vibration and impact, and can also protect the mechanical system and products. Through the cooperation of the first damper 11 and the first telescopic spring 10, while achieving vibration reduction and buffering, it also has the function of restoring to its original state when the external force disappears.

[0031] To facilitate the assembly of the support rod 5 and the movable rod 7, a cavity that penetrates the bottom end along its axial direction is provided at the bottom of the support rod 5, and the top end of the movable rod 7 is inserted into the cavity.

[0032] The connecting rod 6 can be an elastic rod, which can be telescoped as needed to meet the requirement of the support rod 5 rotating around the hinge point between it and the longitudinal rod 9.

[0033] In this embodiment, a groove with an open bottom end is provided on the longitudinal rod 9. A strip plate 13, a second damper 15, and a second telescopic spring 14 are arranged in the groove. The strip plate 13 is movably matched with the groove along the transverse direction of the groove. The transverse direction of the groove is the axial direction of the longitudinal rod 9, that is, the strip plate 13 can slide in the groove along the axial direction of the longitudinal rod 9. The second damper 15 is arranged between the strip plate 13 and one end wall of the groove. The second telescopic spring 14 is sleeved on the outer periphery of the second damper 15, with one end fixed to the end wall of the groove and the other end fixed to the strip plate 13. The strip plate 13 moving along the transverse direction of the groove can drive the second telescopic spring 14 to expand and contract. The top end of the connecting rod 6 is hinged to the bottom of the strip plate 13. This setting enables the connecting rod 6 to buffer the force generated by the lateral impact.

[0034] When the drone is used up and packed, the support rod 5 rotates around its hinge point with the longitudinal rod 9 and turns inward to approach the longitudinal rod 9 and fold up. At the same time, the connecting rod 6 is stretched to approach the longitudinal rod 9, making the overall volume smaller and facilitating storage and movement.

[0035] Since the roller 8 directly contacts the ground when the drone lands, in order to further play a buffering role, a rubber layer is covered outside the roller 8.

[0036] To make it more conducive to playing the buffering role, both the support rod 5 and the telescopic connecting rod 6 are in an inclined state. The two support rods 5 on each longitudinal rod 9 are symmetric about the perpendicular bisector of the longitudinal rod 9.

[0037] On the basis of the foregoing, the middle part of the support rod 5 is hinged to the lower part of the connecting rod 6 through a hinge, the upper part of the connecting rod 6 is hinged to the lower part of the strip plate 13 through a hinge, and the strip plate 13 is slightly smaller than the inner diameter of the longitudinal connecting rod 9; the middle part of the outer side of the strip plate 13 is welded with the second telescopic spring 14 and the second damper 15, and the other ends of the second telescopic spring 14 and the second damper 15 are welded to the longitudinal connecting rod 9. The second telescopic spring 14 and the second damper 15 are sleeved. Driven by the second telescopic spring 14 and the second damper 15, the strip plate 13 can slide inside the longitudinal connecting rod 9.

[0038] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including 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.

[0039] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. Drone buffer structure, including a tripod disposed at the bottom of both ends of the longitudinal rod (9) of the drone, characterized in that: The tripod includes a support rod (5), a connecting rod (6), and a movable rod (7); the top end of the support rod (5) is hinged to the bottom of the longitudinal rod (9), the bottom end of the support rod (5) is movably connected to the movable rod (7) along its axial direction through a telescopic mechanism, and the bottom end of the movable rod (7) is connected to a roller (8); the top end of the connecting rod (6) is hinged to the bottom of the longitudinal rod (9), and the bottom end is hinged to the support rod (5), and a triangle is formed by enclosing the longitudinal rod (9), the support rod (5), and the connecting rod (6). A groove with an open bottom end is provided on the longitudinal rod (9), and a strip plate (13), a damper two (15), and a telescopic spring two (14) are provided in the groove. The strip plate (13) is movably matched with the groove along the transverse direction of the groove; the damper two (15) is arranged between the strip plate (13) and one end wall of the groove, the telescopic spring two (14) is sleeved on the outer periphery of the damper two (15), and one end is fixed to the end wall of the groove and the other end is fixed to the strip plate (13); the top end of the connecting rod (6) is hinged to the bottom of the strip plate (13).

2. The drone buffer structure according to claim 1, characterized in that: The telescopic mechanism includes a slider (12), a damper one (11), and a telescopic spring one (10); the slider (12) is fixed to the top end of the movable rod (7); the damper one (11) is installed between the top surface of the slider (12) and the support rod (5), the telescopic spring one (10) is sleeved on the outer periphery of the damper one (11), and the bottom end is fixed to the slider (12) and the top end is fixed to the support rod (5).

3. The drone buffer structure according to claim 2, wherein: A cavity penetrating the bottom end along the axial direction of the support rod (5) is provided at the bottom of the support rod (5), and the top end of the movable rod (7) is inserted into the cavity.

4. The drone buffering structure according to any one of claims 1-3, characterized in that: The outer surface of the roller (8) is covered with a rubber layer.

5. The drone buffer structure according to any one of claims 1-3, characterized in that: Both the support rod (5) and the telescopic connecting rod (6) are in an inclined state.

6. The drone buffer structure according to any one of claims 1-3, characterized in that: The two support rods (5) on each longitudinal rod (9) are symmetric about the perpendicular bisector of the longitudinal rod (9).

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