CN214986028U

CN214986028U - Novel folding screw oar presss from both sides structure and unmanned aerial vehicle

Info

Publication number: CN214986028U
Application number: CN202120749361.1U
Authority: CN
Inventors: 邓伟平; 吴敏
Original assignee: Nanchang Sanrui Intelligent Technology Co Ltd
Current assignee: Nanchang Sanrui Intelligent Technology Co Ltd
Priority date: 2021-04-13
Filing date: 2021-04-13
Publication date: 2021-12-03
Anticipated expiration: 2031-04-13

Abstract

The utility model discloses a novel folding propeller blade clamp structure and an unmanned aerial vehicle, which comprises a blade and a blade clamp, wherein the blade is provided with a positioning hole; the paddle clamp comprises an upper clamp plate and a lower clamp plate, through holes are formed in the positions, corresponding to the positioning holes, of the two ends of the upper clamp plate, positioning columns are arranged on the positions, corresponding to the through holes, of the lower clamp plate, and the through holes are connected with the positioning columns through bolts; and the lower clamping plate is also provided with a limiting part for limiting the rotation of the blade. The utility model discloses the stability in use is higher, has increased the life of folding screw to the installation is simple, the application and popularization of being convenient for.

Description

Novel folding screw oar presss from both sides structure and unmanned aerial vehicle

Technical Field

The utility model relates to an unmanned air vehicle technique field, concretely relates to novel folding screw oar presss from both sides structure and unmanned aerial vehicle.

Background

The traditional folding propeller blade clamp and the blade have various combination modes, but the main outstanding problems are as follows: (1) mounting bolts between the paddle clamps and the paddles are easy to loosen, so that certain hidden danger is caused to flight safety; the partially folded propeller is coated with the bolt glue when the propeller clamp and the blade are installed for solving the problems, and the installation of the partially folded propeller is more complicated and is assembled with certain difficulty. Blades of the partial type folding propeller propellers are not provided with limiting devices or mechanisms in a folded state, so that friction and collision can be generated between the two blades; (3) although some types of propeller clamps are provided with limiting devices or mechanisms, the devices or mechanisms are all metal pieces, propeller blades are mainly made of plastics or carbon fibers, and the propellers made of the two types of materials collide with the metal limiting devices or mechanisms, so that slight knocking marks are generated on the surfaces of the propellers, and cracks are generated inside and outside the propellers in serious cases to influence flight safety; (4) the gasket majority of the gasket between the traditional folding screw propeller clamp and the paddle adopts the gasket of PTFE (polytetrafluoroethylene) material, the screw can produce certain load to the gasket at the flight in-process, thereby wearing and tearing gasket, folding screw is at folding in-process, the paddle is rotatory also can cause the gasket wearing and tearing, the gasket can cause the clearance increase between folding screw propeller paddle and the paddle clamp in long-term wearing and tearing, thereby influence screw dynamic balance and flight stability, partly folding screw adopts POM (polyformaldehyde) material gasket in addition, this kind of gasket is better in wearability, but self-lubrication is relatively poor, the in-process needs the great power of user at folding screw opening and shutting, and need the screw to reach higher rotational speed just can make the screw get rid of into the straight state completely when folding screw flight starts.

Disclosure of Invention

The utility model discloses the problem that will solve is: the utility model provides a novel folding screw oar presss from both sides structure and unmanned aerial vehicle, the stability in use is higher, has increased the life of folding screw to the installation is simple, the application and popularization of being convenient for.

The utility model discloses a solve the technical scheme that above-mentioned problem provided and do: a novel folding propeller paddle clamp structure comprises a paddle and a paddle clamp, wherein the paddle is provided with a positioning hole; the paddle clamp comprises an upper clamp plate and a lower clamp plate, through holes are formed in the positions, corresponding to the positioning holes, of the two ends of the upper clamp plate, positioning columns are arranged on the positions, corresponding to the through holes, of the lower clamp plate, and the through holes are connected with the positioning columns through bolts; and the lower clamping plate is also provided with a limiting part for limiting the rotation of the blade.

Preferably, the inner side of the through hole and the positioning column are respectively provided with a gasket.

Preferably, the limiting parts are four limiting columns arranged on the lower clamping plate.

Preferably, the limit post is sleeved with an anti-collision sleeve.

Preferably, the material of the anti-collision sleeve is fluororubber.

The utility model also discloses an unmanned aerial vehicle, unmanned aerial vehicle includes above-mentioned arbitrary one novel folding screw oar press from both sides the structure.

Compared with the prior art, the utility model has the advantages that: the utility model provides a use the bolt not hard up for a long time at folding screw, folding propeller blade to collide with and wear and tear, gasket wearing and tearing and paddle need higher rotational speed to straighten the scheduling problem, the stability in use is higher, has increased the life of folding screw to the installation is simple, the application and popularization of being convenient for.

Drawings

The accompanying drawings, which are described herein, serve to provide a further understanding of the invention and constitute a part of this specification, and the exemplary embodiments and descriptions thereof are provided for explaining the invention without unduly limiting it.

FIG. 1 is a folded view of the foldable propeller clip of the present invention;

FIG. 2 is an exploded view of the folding propeller clip of the present invention;

FIG. 3 is a sectional view of a portion of the folding propeller blade clamp of the present invention;

FIG. 4 is a view of the structure of the lower clamping plate of the foldable propeller clamp of the present invention;

in the figure: 1. the anti-collision device comprises a paddle, 2 parts of a lower clamping plate, 2 parts of 1 parts of a positioning column, 2 parts of a limiting column, 3 parts of an upper clamping plate, 4 parts of a gasket, 5 parts of a bolt, 6 parts of a nut, 7 parts of an anti-collision sleeve.

Detailed Description

The following detailed description will be made with reference to the accompanying drawings and examples, so that how to implement the technical means of the present invention to solve the technical problems and achieve the technical effects can be fully understood and implemented.

In the description of the present invention, it should be noted that, for the orientation words, if there are terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the orientation and positional relationship indicated are based on the orientation or positional relationship shown in the drawings, and only for the convenience of describing the present invention and simplifying the description, it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and not be construed as limiting the specific scope 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, the 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 invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "assembled", "connected", and "connected", if any, 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 meaning 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. 1-4, a novel folding propeller blade clamp structure, which comprises a blade 1 and a blade clamp, wherein the blade 1 is provided with a positioning hole; the paddle clamp comprises an upper clamp plate 3 and a lower clamp plate 2, through holes are formed in the positions, corresponding to the positioning holes, of the two ends of the upper clamp plate 3, positioning columns 2-1 are arranged on the positions, corresponding to the through holes, of the lower clamp plate 2, and the through holes are connected with the positioning columns 2-1 through bolts 5; and the lower clamping plate 2 is also provided with a limiting part for limiting the rotation of the paddle 1.

In the embodiment, the inner side of the through hole and the positioning column 2-1 are both provided with a gasket 4.

Specifically, the gasket 4 is made of POM-H + PTFE material

In this embodiment, the limiting members are four limiting posts 2-2 disposed on the lower plate 2.

In this embodiment, the limit post 2-2 is sleeved with an anti-collision sleeve 7.

In this embodiment, the material of the anti-collision cover 7 is fluororubber.

An unmanned aerial vehicle, unmanned aerial vehicle includes above-mentioned arbitrary one novel folding screw oar presss from both sides structure.

The utility model discloses the assembly process as follows: four anti-collision sleeves 7 are sequentially vertically sleeved on four limiting posts 2-2 on the lower splint 2, two gaskets are respectively installed on the lower splint 2 in clearance fit with the positioning posts 2-1 on the lower splint 2, the paddle 1 is in clearance fit with the positioning posts 2-1 through positioning holes at the root part, the lower plane of the root part of the paddle 1 is attached and installed on the gasket 4 on the lower splint 2, the gaskets 4 are installed outside through holes at two ends of the upper splint 3, the upper splint 3 provided with the gaskets 4 is installed on the lower splint 2, lower counter bores are designed at two sides of the upper splint 3, the lower counter bore is in clearance fit with the positioning column 2-1, a gasket 4 arranged on the upper clamping plate 3 is attached to the upper plane of the root part of the blade 1, a nut 6 is placed in a nut groove on the lower clamping plate 2, and two bolts 5 sequentially penetrate through the upper clamping plate 3, the gasket 4 and the positioning column 2-1 of the lower clamping plate 2 and are fixedly connected through the nut 6.

When the foldable propeller is used, the lower clamping plate 2 is fixed on the brushless direct current motor, the two blades 1 are arranged on a straight line, the brushless direct current motor generates torque to rotate the foldable propeller, the foldable propeller is used, the two blades 1 of the foldable propeller are automatically thrown and straightened on the straight line under the influence of centrifugal force under high-speed rotation, the foldable propeller is used in a non-use process as shown in figure 1, the blades 1 are tangent to the anti-collision sleeve 7, the anti-collision sleeve 7 is made of fluororubber (fluoroelastomer), the material can meet the use under severe working conditions of acid content, alkali content, high temperature and the like when being applied to the foldable propeller, the blades of the foldable propeller are made of plastics or carbon fibers basically, and the anti-collision sleeve 7 is embedded on the limiting columns 2-2, so that the blades 1 are effectively prevented from colliding with the lower clamping plate 2 in the non-use process. The gasket 4 material is POM-H + PTFE material, and this material has better wearability, can satisfy folding screw after repetitious usage, the low wearing and tearing volume of gasket to can not make folding screw clearance increase because of the too much wearing and tearing of gasket, lead to its vibrations increase. Bolt 5 with nut 6 is as the retaining member of folding screw, and bolt 5 adopts the bullet pad combination bolt, and nut 6 adopts the auto-lock nut that has the nylon retaining ring, and these both all have locking effect, can guarantee after folding screw repetitious usage that the bolt is not hard up, and the assembly is simple relatively.

The foregoing is illustrative of the preferred embodiments of the present invention only, 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 be changed. All changes which come within the scope of the independent claims of the invention are to be embraced within their scope.

Claims

1. A novel folding propeller paddle clamp structure comprises a paddle (1) and a paddle clamp, wherein a positioning hole is formed in the paddle (1); the method is characterized in that: the paddle clamp comprises an upper clamp plate (3) and a lower clamp plate (2), through holes are formed in the positions, corresponding to the positioning holes, of the two ends of the upper clamp plate (3), positioning columns (2-1) are arranged on the positions, corresponding to the through holes, of the lower clamp plate (2), and the through holes are connected with the positioning columns (2-1) through bolts (5); the lower clamping plate (2) is further provided with a limiting part for limiting the rotation of the paddle (1).

2. The novel folding propeller blade clamp structure of claim 1, wherein: and gaskets (4) are arranged on the inner side of the through hole and the positioning column (2-1).

3. The novel folding propeller blade clamp structure of claim 1, wherein: the limiting pieces are four limiting columns (2-2) arranged on the lower clamping plate (2).

4. The novel folding propeller blade clamp structure of claim 3, wherein: the limiting columns (2-2) are sleeved with anti-collision sleeves (7).

5. The novel folding propeller blade clamp structure of claim 4, wherein: the anti-collision sleeve (7) is made of fluororubber.

6. An unmanned aerial vehicle, its characterized in that: the drone comprises a novel folding propeller blade clamp structure according to any one of claims 1 to 5.