CN215922534U - Unmanned aerial vehicle screw is each other inlayed screw thread formula dual fail-safe quick assembly disassembly structure - Google Patents

Abstract

The utility model discloses a mutually-embedded thread type double-insurance quick dismounting structure for a propeller of an unmanned aerial vehicle, which comprises the propeller, a motor upper cover, a propeller fixing component, a motor fixing component and a positioning component, wherein a half-thread inner thread hole is formed in the upper end of the propeller fixing component, the positioning component comprises a screw rod and a movable shaft, the movable shaft is arranged at the central position of the propeller fixing component, the screw rod is sleeved at the upper end of the movable shaft, a screw rod through hole matched with the movable shaft is formed in the screw rod, the movable shaft is connected with the screw rod through a screw, and a half-thread outer thread matched with the half-thread inner thread hole is formed in the lower end of the screw rod. The utility model can prevent the propeller from loosening when the motor rotates forwards and backwards.

Description

Unmanned aerial vehicle screw is each other inlayed screw thread formula dual fail-safe quick assembly disassembly structure

Technical Field

The utility model relates to the technical field of unmanned aerial vehicles, in particular to a propeller mutually-embedded thread type double-insurance quick dismounting structure of an unmanned aerial vehicle.

Background

The oar seat of unmanned aerial vehicle paddle at present in the market divide into fixed oar seat structure and from rotating oar seat structure. Fixed oar seat structure: the propeller base is fixed on the motor by four screws (or the motor is provided with a proper mounting hole without the propeller base), and then the propeller is fixed on the propeller base (the motor) by four screws through the pressure plate. The paddle seat structure needs to frequently assemble and disassemble a large number of screws each time the paddle seat structure is installed and used, consumes time and labor, and can have thread sliding after being repeatedly used for a long time. Meanwhile, due to the fact that no definite positioning point exists, whether the propeller and the motor are concentric or not is mainly determined, and machining precision of the propeller base and errors during manual operation are eliminated. The self-rotating propeller fixing structure is fixed through a self-rotating propeller base, one is that a lower plate part of the self-rotating propeller base is fixed on a motor through screws, an upper cover part is fixed on a propeller through a pressing plate through screws and then is connected by the threads of the self-rotating propeller base, and the self-rotating propeller fixing structure is generally suitable for large-size propellers; the other type is that the propeller base is provided with a threaded output shaft (or the motor output shaft is directly threaded without the propeller base), the propeller is sleeved on the output shaft and then is fixed through a bullet nut or a common nut, and the propeller is generally suitable for small-size propellers. The self-rotating fixed structure has fixed rotating directions, and the positive and negative propellers need to be provided with propeller bases with different rotating directions. When the motor rotates reversely, suddenly stops or stalls, the paddle seat has the possibility of falling off in the air such as loosening and shooting the paddles.

To above-mentioned two kinds of circumstances, people developed quick detach formula oar seat, its structure comprises with the lower piece that the motor combines and the last piece that combines with the screw, the piece has two location pivot pins that can press on, pivot position level is placed, can be translational motion at the horizontal direction of pivot when pressing, it has two location pivot pins that four jack catchs can catch on the piece to have fast down, the pivot is inwards removed when pressing the button at piece both ends on the piece, the jack catch realizes breaking away from the pivot of piece and can realize tearing open and adorning, can block the jack catch through the pivot when loosening, realize the fixed of screw and motor, can cross to realize quick installation and dismantlement. However, the positioning accuracy is not accurate, for example, if a certain paddle has a deviation, the eccentricity of the paddle can occur under a high rotating speed, even the claw is broken when the eccentricity is serious, and finally the dropping of the paddle can occur; meanwhile, the axial and radial positioning deviation between the paddle and the motor cannot be eliminated, and the vibration problem of the paddle cannot be solved. And it requires high machining accuracy, resulting in high manufacturing costs.

For this reason, patent CN202011160725.9 discloses an unmanned aerial vehicle screw inlays buckle formula dual fail-safe quick assembly disassembly structure each other, but the screw has the risk of taking off in the motor just reversing.

Disclosure of Invention

The utility model aims to solve the problems that: the utility model provides an unmanned aerial vehicle screw is each other inlays screw thread formula dual fail-safe quick assembly disassembly structure can prevent that the screw pine from taking off.

The technical scheme provided by the utility model for solving the problems is as follows: the utility model provides an unmanned aerial vehicle screw is each other inlays screw thread formula dual fail-safe quick assembly disassembly structure, includes screw, motor upper cover, the fixed subassembly of screw, the fixed subassembly of motor and locating component, the upper end of the fixed subassembly of screw is equipped with half tooth internal thread hole, locating component includes screw rod, loose axle, the loose axle is established at the fixed subassembly central point of screw and is put, the screw rod cover is established in the loose axle upper end, be equipped with on the screw rod with loose axle complex screw rod through-hole, the loose axle passes through the screw and is connected with the screw rod, the screw rod lower extreme be equipped with half tooth external screw thread of half tooth internal thread hole complex.

Preferably, the screw fixing component comprises a cover plate, a screw and an upper plate, through holes or half thread holes for the movable shaft to pass through are formed in the cover plate, the screw, the upper plate and the screw, bolt holes are formed in two ends of the movable shaft, the movable shaft passes through the upper plate, the screw, the cover plate and the screw and then is connected with the movable shaft through bolts, and the half thread inner thread holes are formed in the upper end of the upper plate.

Preferably, the positioning assembly further comprises a spring and a locking plate, the spring sleeve is arranged at the lower end of the movable shaft and connected with the locking plate, a first V-shaped projection is arranged on the locking plate, a first groove matched with the locking plate is arranged at the lower end of the screw fixing assembly, first V-shaped grooves matched with the first V-shaped projections are arranged at the two ends of the first groove, a second groove is arranged at the position, corresponding to the first groove, of the motor fixing assembly, and second V-shaped grooves matched with the first V-shaped projections are arranged at the two ends of the second groove.

Preferably, the lower end of the upper plate is provided with a first clamping block and a first clamping groove, and the motor fixing component is provided with a second clamping block matched with the first clamping groove and a second clamping groove matched with the first clamping block.

Compared with the prior art, the utility model has the advantages that: the utility model screws into the half-thread inner threaded hole of the upper plate through the outer thread of the screw rod, and props against the locking plate through the movable shaft, thereby avoiding the risk that the propeller loosens when the motor rotates forwards and backwards.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and not to limit the utility model.

FIG. 1 is an exploded schematic view of the present invention

FIG. 2 is a schematic view of the present invention with the propeller and motor components removed

FIG. 3 is a schematic view of the assembled state of the present invention;

FIG. 4 is a cross-sectional view of the screw of the present invention;

FIG. 5 is a schematic perspective view of the upper plate of the present invention;

FIG. 6 is a bottom view of the upper plate of the present invention;

FIG. 7 is a cross-sectional view of the upper plate of the present invention in two orientations;

FIG. 8 is a top view of the locking plate of the present invention;

FIG. 9 is a side view of the locking plate of the present invention;

FIG. 10 is a schematic perspective view of a base according to the present invention;

FIG. 11 is a cross-sectional view of the base of the present invention;

the attached drawings are marked as follows: 1. a first bolt; 2. a screw; 2.1, screw through holes; 2.2, a half-thread external thread of the screw; 2.3, screw end face; 3. a second bolt; 4. a cover plate; 5. a propeller; 6. an upper plate; 6.1, half-tooth internal thread holes; 6.2, a first clamping block; 6.3, a first clamping groove; 6.4, a first groove; 6.5, forming a first V-shaped groove; 7. a movable shaft; 7.1, the middle end face of the movable shaft; 8. a pagoda spring; 9. A locking plate; 9.1, locking plate through holes; 9.2, a limiting surface; 9.3, a first V-shaped bump; 10. a third bolt; 11. a hasp wave shaped spacer; 12. a fourth bolt; 13. a base; 13.1, base through holes; 13.2, a second fixture block; 13.3, a second clamping groove; 13.4, a second groove; 13.5, a V-shaped groove II; 14. an adaptor ring; 15. and (4) an upper cover of the motor.

Detailed Description

The embodiments of the present invention will be described in detail with reference to the accompanying drawings and examples, so that how to implement the technical means for solving the technical problems and achieving the technical effects of the present invention can be fully understood and implemented.

In the description of the present invention, it should be noted that, for the terms of orientation, such as "central", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., it indicates that the orientation and positional relationship shown in the drawings are based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated without limiting the specific scope of protection of the present invention.

Furthermore, if the terms "first" and "second" are used for descriptive purposes only, they are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. Thus, a definition of "a first" or "a second" feature may explicitly or implicitly include one or more of the features, and in the description of the utility model, "a number" means two or more unless explicitly defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "assembled", "connected", and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; or may be a mechanical connection; the two elements can be directly connected or connected through an intermediate medium, and the two elements can be communicated with each other. The specific meanings of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific situations.

The specific embodiment of the utility model is shown in fig. 1-11, and the mutually-embedded thread type double-insurance rapid dismounting structure of the propeller of the unmanned aerial vehicle comprises a propeller, an upper motor cover, a propeller fixing component, a motor fixing component and a positioning component, wherein the upper end of the propeller fixing component is provided with a half-thread internal thread hole 6.1, the positioning component comprises a screw rod 2 and a movable shaft 7, the movable shaft 7 is arranged at the central position of the propeller fixing component, the screw rod 2 is sleeved at the upper end of the movable shaft 7, the screw rod 2 is provided with a screw rod through hole 2.1 matched with the movable shaft 7, the movable shaft 7 is connected with the screw rod 2 through the screw 1, and the lower end of the screw rod 2 is provided with a half-thread external thread 2.2 matched with the half-thread internal thread hole 6.1.

In this embodiment, the fixed subassembly of screw includes apron 4, screw 5 and upper plate 6, all be equipped with through-hole or half thread hole that supplies loose axle 7 to pass on apron 4, screw 5, upper plate 6 and the screw rod 2, 7 both ends of loose axle are equipped with the bolt hole, loose axle 7 pass behind upper plate 6, screw 5, apron 4, the screw rod 2 through the bolt with loose axle 7 is connected, half tooth internal thread hole 6.1 sets up 6 upper ends of upper plate.

In this embodiment, locating component still includes spring 8 and lockplate 9, 8 covers of spring are established at 7 lower extremes of loose axle and are connected with lockplate 9, be equipped with V type lug 9.3 on the lockplate 9, the fixed subassembly lower extreme of screw be equipped with lockplate 9 complex recess 6.4, the both ends of recess 6.4 are equipped with V type lug 9.3 complex V type recess 6.5, the position that corresponds with recess 6.4 on the fixed subassembly of motor is equipped with recess two 13.4, the both ends of recess two 13.4 are equipped with V type lug 9.3 complex V type recess two 13.5.

In this embodiment, the lower end of the upper plate 6 is provided with a first clamping block 6.2 and a first clamping groove 6.3, and the motor fixing component is provided with a second clamping block 13.2 matched with the first clamping groove 6.3 and a second clamping groove 13.3 matched with the first clamping block 6.2.

In this embodiment, the motor fixing assembly includes a base 13 and an adapting ring 14, as shown in fig. 11, the base 13 is provided with an adapting hole matching with the adapting ring 14, the base 13 is connected with a motor upper cover 15 through a bolt,

in this embodiment, the number of the half thread through hole 6.1 and the half thread external thread 2.2 is 1, and the half thread through hole 6.1 and the half thread external thread 2.2 are correspondingly matched.

In this embodiment, the lower end of the first V-shaped groove 6.5 and the upper end of the second V-shaped groove 13.5 are correspondingly flush.

In this embodiment, the locking plate 9 is provided with a first V-shaped protrusion 9.3 at two ends, and the first V-shaped protrusion 9.3 matches with the lower end of the first V-shaped groove 6.5 and the second V-shaped groove 13.5 in shape.

In this embodiment, as shown in fig. 8, the central end of the locking plate 9 is provided with a limiting surface 9.2, and the limiting surface 9.2 matches with the shapes of the first groove 6.4 and the second groove 13.4.

In this embodiment, the spring is a pagoda spring 8.

When the propeller fixing assembly is assembled, the pagoda spring 8 is placed in the upper plate 6, the locking plate 9 is placed in the groove I6.4, the V-shaped projection I9.3 of the locking plate is embedded into the groove I of the upper plate, the movable shaft 7 penetrates through the upper plate half-tooth thread through hole 6.1 from top to bottom, the lower end of the movable shaft penetrates through the locking plate through hole 9.1 through the upper plate 6 and the pagoda spring 8, and finally the upper plate 6 and the locking plate are fixed through the bolt III 10. The propellers 5 are placed on the upper plate 6 in sequence, then the cover plate 4 is placed on the propellers 5, and finally the propellers are fixed on the upper plate 6 through the second bolts 3. And then, sleeving the screw rod 2 at the upper end of the movable shaft 7, fixing one end of the movable shaft by using the first bolt 1, so that the first bolt, the movable shaft, the locking plate and the bolt form an integrated assembly, and then, completing the assembly of the propeller assembly and the positioning assembly.

The assembly of the motor fixing component of the embodiment: firstly, the adapting ring 14 is placed on the central shaft of the upper motor cover 15, then the base 13 is placed on the upper motor cover 15, the adapting ring 14 penetrates through the base through hole 13.1, then the base 13 and the adapting ring 14 are fixed on the upper motor cover through the bolt four 12, finally, the hasp corrugated gasket is placed into the clamping groove two 13.3, and finally, the installation of the motor fixing part is completed.

In the installation of the embodiment, the fixture block 6.2 vertically penetrates through the groove 13.4 of the base, the locking plate 9 is extruded to compress the pagoda spring 8, the upper plate 6 extrudes the hasp corrugated gasket 11, then after the rotation is about 90 degrees, the fixture block I6.2 on the upper plate is screwed into the fixture groove II 13.3 in the base, the fixture block II 13.2 on the base is screwed into the fixture groove I6.3 on the upper plate, the locking plate is sent into the groove I6.4 and the groove II 13.4 through the elasticity of the pagoda spring 8, the upper half part of the V-shaped projection I9.3 is matched with the V-shaped groove I6.5, the lower half part of the V-shaped projection I9.3 is matched with the V-shaped groove II 13.5, and the downward-elastic locking sound of the locking plate 9 appears at the moment, so that the mutually-embedded type connection of the upper plate 6 and the base 13 is fixed with the first stage; furthermore, the screw 2 is screwed into the half-thread through hole 6.1 of the upper plate to the bottom, so that the end face 2.3 of the screw is contacted with the middle end face 7.1 of the movable shaft, and the V-shaped projection I9.3 of the locking plate, the V-shaped groove I6.5 of the upper plate and the V-shaped groove II 13.5 of the base are fixed without clearance, and the second-stage fixation with the anti-falling function is realized.

In the disassembly process, the screw 2 is unscrewed to separate the screw 2 from the upper plate 6, and then primary unlocking is realized; and in the second step, the screw rod 2 is pulled upwards to compress the pagoda spring 8, so that the V-shaped bumps I9.3 at the two ends of the locking plate are separated from the second groove on the base, after the locking plate is rotated by about 90 degrees, the first clamping block 6.2 on the upper plate is firstly screwed out from the second clamping groove 13.3 in the base, and then separated from the second groove 13.4 through the elasticity of the pagoda spring 10, so that secondary unlocking is completed, and the screw propeller fixing part and the motor fixing part are detached.

The foregoing is merely illustrative of the preferred embodiments of the present invention and is not to be construed as limiting the claims. The present invention is not limited to the above embodiments, and the specific structure thereof is allowed to vary. All changes which come within the scope of the utility model as defined by the independent claims are intended to be embraced therein.

Claims (4)

1. The utility model provides an unmanned aerial vehicle screw is each other inlayed screw thread formula dual fail-safe quick assembly disassembly structure, includes screw, motor upper cover, the fixed subassembly of screw, the fixed subassembly of motor and locating component, its characterized in that: the upper end of the fixed subassembly of screw is equipped with half tooth internal thread hole (6.1), locating component includes screw rod (2), loose axle (7) are established at the fixed subassembly central point of screw and are put, screw rod (2) cover is established in loose axle (7) upper end, be equipped with on screw rod (2) with loose axle (7) complex screw rod through-hole (2.1), loose axle (7) are connected with screw rod (2) through screw (1), screw rod (2) lower extreme be equipped with half tooth internal thread hole (6.1) half tooth external screw thread (2.2) of complex.

2. The propeller mutually-embedded thread type double-insurance quick dismounting structure of the unmanned aerial vehicle as claimed in claim 1, characterized in that: the screw fixing assembly comprises a cover plate (4), a screw (5) and an upper plate (6), through holes or half threaded holes for the movable shaft (7) to pass are formed in the cover plate (4), the screw (5), the upper plate (6) and the screw (2), bolt holes are formed in two ends of the movable shaft (7), the movable shaft (7) passes through the upper plate (6), the screw (5), the cover plate (4) and the screw (2) and then is connected with the movable shaft (7) through bolts, and half threaded holes (6.1) are formed in the upper plate (6) in the upper end.

3. The propeller mutually-embedded thread type double-insurance quick dismounting structure of the unmanned aerial vehicle as claimed in claim 1, characterized in that: the locating component still includes spring (8) and lockplate (9), spring (8) cover is established at loose axle (7) lower extreme and is connected with lockplate (9), be equipped with V type lug (9.3) on lockplate (9), the fixed subassembly lower extreme of screw be equipped with lockplate (9) complex recess (6.4), the both ends of recess (6.4) be equipped with V type lug (9.3) complex V type recess (6.5), the position that corresponds with recess (6.4) on the fixed subassembly of motor is equipped with recess two (13.4), the both ends of recess two (13.4) be equipped with V type lug (9.3) complex V type recess two (13.5).

4. The propeller mutually-embedded thread type double-insurance quick dismounting structure of the unmanned aerial vehicle as claimed in claim 2, characterized in that: the motor fixing component is characterized in that a first clamping block (6.2) and a first clamping groove (6.3) are arranged at the lower end of the upper plate (6), and a second clamping block (13.2) matched with the first clamping groove (6.3) and a second clamping groove (13.3) matched with the first clamping block (6.2) are arranged on the motor fixing component.

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