CN215285284U - Screw protection device and unmanned aerial vehicle system - Google Patents

Abstract

A propeller protection device and an unmanned aerial vehicle system are provided, wherein the propeller protection device is arranged on an unmanned aerial vehicle through a base (11); the propeller protection device comprises a plurality of protection pieces (12), wherein the first ends of the protection pieces (12) are connected to a base (11) and the second ends of the protection pieces extend along the direction departing from the base (11), the first end of at least one protection piece (12) can rotate relative to the base (11), so that the protection pieces (12) have an unfolded state in which the protection pieces are radially unfolded relative to the base (11) and a folded state in which each adjacent protection piece (12) is close to each other, when the protection pieces (12) are in the unfolded state, a containing space for containing a propeller (21) is formed by the protection pieces (12), and the protection pieces (12) can at least partially shield the outer periphery of a propeller disc formed by the rotation of the propeller (21), so that the propeller is protected, can be folded into a smaller size, and are beneficial to containing and carrying.

Description

Screw protection device and unmanned aerial vehicle system

Technical Field

The application relates to the technical field of safety protection devices of unmanned aerial vehicles, in particular to a propeller protection device and an unmanned aerial vehicle system.

Background

When rotor formula unmanned aerial vehicle is at the during operation, its screw can be high-speed rotatory, if rotatory screw touches personnel and can lead to the fact the threat to this personnel's personal safety, dangerous higher, if other objects are touched to rotatory screw under the circumstances such as striking, also can cause the damage to screw itself. In order to solve the problem, a propeller protection cover can be adopted to protect the propeller of the unmanned aerial vehicle. Current screw safety cover includes a plurality of subshields that can dismantle the connection with unmanned aerial vehicle usually, and every subshield cover is used for the cover to establish in a screw outside or cover and establishes in two screw outsides, and the self size of every subshield cover is fixed unchangeable, and this just leads to taking off the back when the screw safety cover is gone up by unmanned aerial vehicle, and its is bulky, inconvenient accomodating and carrying.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a propeller protection device and an unmanned aerial vehicle system.

In a first aspect, an embodiment of the present application provides a propeller protection device, including: the propeller protection device can be installed on the unmanned aerial vehicle through the base; the protecting pieces are connected to the base, the second ends of the protecting pieces extend in the direction departing from the base, the first end of at least one protecting piece can rotate relative to the base, so that the protecting pieces are in an unfolded state of radial unfolding relative to the base and a folded state of mutual closing of every adjacent protecting piece, when the protecting pieces are in the unfolded state, the protecting pieces form a containing space used for containing the propeller, and the protecting pieces can at least partially shield the outer periphery of a propeller disc formed by rotation of the propeller.

Further, the first end of the at least one protective member is rotatable relative to the base about a first axis of rotation, wherein the first axis of rotation is parallel to and spaced from the axis of rotation of the propeller when the propeller protection device is mounted to the drone.

Further, the first rotating shaft passes through the first end of the corresponding protector.

Further, the base is equipped with installation face and recess, the equal opening in both ends that the recess is relative, wherein one end opening is towards the circumference outside of base, other end opening is located the installation face, the first end of at least one protection piece rotationally sets up in the recess, the first end of this protection piece is equipped with spacing portion, when needs installation screw protection device, earlier be in the expansion state with a plurality of protection pieces, install screw protection device to unmanned aerial vehicle again on, unmanned aerial vehicle's motor and/or motor base laminate mutually and the spacing portion of chucking with the position that the installation face corresponds to the recess this moment, so that a plurality of protection pieces keep at the expansion state.

Further, spacing portion includes spacing face, and when a plurality of protections piece were in the expanded state, spacing face and installation face parallel and level and the outer profile of the region of enclosing jointly and unmanned aerial vehicle and the shape looks adaptation of the cross section of the position rather than laminating mutually.

Further, the base includes the base body, and the base body is the annular, and the first end of a plurality of protections piece sets up along the circumference interval of base body, and the medial surface of base body forms the installation face.

Further, still include: and the positioning structure is arranged at the base and/or the first end of the at least one protection piece and can be used for positioning the first end of the protection piece to a preset position in the rotating process of the first end of the protection piece, wherein the preset position comprises an unfolded position where the first ends of the protection pieces are located when the protection pieces are in an unfolded state and/or a folded position where the first ends of the protection pieces are located when the protection pieces are in a folded state.

Furthermore, the base is provided with a groove, the first end of at least one protection piece is rotatably arranged in the groove, and the positioning structure comprises a groove wall at least on one side, wherein the groove wall is distributed along the rotation direction of the protection piece arranged in the groove.

Further, the first ends of all protection pieces can rotate around the second pivot for the base, wherein, when the screw protection device installs back on unmanned aerial vehicle, the second pivot that a protection piece corresponds is perpendicular to the rotation axis of screw or sets up for the rotation axis slope of screw, and the second pivot that the protection piece that is located this protection piece both sides corresponds sets up with the mode of inclining towards this protection piece respectively.

Further, the protection piece includes supporting part and block portion, and the first end of supporting part is connected in the base, blocks the portion and connects in the second end of supporting part and for the setting of buckling upwards of supporting part.

Further, the protection member includes two support portions and a blocking portion, the two support portions are spaced apart from each other in a direction in which the rotation shaft of the propeller extends, a first end of each support portion is connected to the base, and the blocking portion is connected to second ends of the two support portions.

Further, the blocking portion has an arc shape bent inward.

Further, the base can detachably be installed to the unmanned aerial vehicle.

Further, the base includes base body and the connection structure of connection on the base body, and the base body cover is established on unmanned aerial vehicle's motor and/or motor base, and connection structure can dismantle with the corresponding horn of unmanned aerial vehicle and be connected.

Further, connection structure includes first card-tight part and second card-tight part, and one side of first card-tight part is rotated with one side of second card-tight part and is connected, and after first card-tight part and second card-tight part lock, the horn is acceptd in the accommodation space that first card-tight part and second card-tight part enclose, and the opposite side of first card-tight part is connected fixedly with the opposite side of second card-tight part.

Further, when a plurality of protections are in folded state, the whole of a plurality of protections sets up along the extending direction of the corresponding horn of unmanned aerial vehicle.

Further, still include: and the flexible piece is sequentially connected to the plurality of protective pieces, and can be commonly supported by the plurality of protective pieces when the plurality of protective pieces are in the unfolded state.

Further, the flexible member is plural, and the plural flexible members are provided at intervals along the extending direction of each protection member.

Further, the flexible member includes a flexible cord, and/or a flexible strap.

In a second aspect, the present application provides an unmanned aerial vehicle system, including unmanned aerial vehicle and the screw protection device of installation to unmanned aerial vehicle, wherein, unmanned aerial vehicle includes the horn and installs the rotor device on the horn, and the screw protection device is used for protecting rotor device's screw, and the screw protection device is foretell screw protection device.

The first end of at least one of the protectors is rotatable relative to the base so that the plurality of protectors has an expanded state in which they are radially expanded relative to the base and a collapsed state in which each adjacent protector is brought together. When the plurality of protective members are in the unfolded state, the plurality of protective members form a containing space for containing the propeller, and the plurality of protective members can at least partially shield the outer periphery of a propeller disc formed by the rotation of the propeller, so that the propeller (particularly the propeller in the rotating state) is protected, the danger of the rotating propeller to personnel is reduced, and the damage to the propeller when the propeller touches other objects under the conditions of impact and the like is avoided. When the plurality of protective members are in the folded state, each adjacent protective member is close to each other, so that the propeller protection device can be folded into a smaller volume, and storage and carrying are facilitated.

Drawings

FIG. 1 is a schematic illustration of a plurality of protective members of a propeller protection device in an extended configuration in accordance with one embodiment of the present application;

FIG. 2 is a schematic view of the plurality of protective members of the propeller protection arrangement of FIG. 1 in a folded state;

FIG. 3 is an exploded schematic view of the propeller protection device of FIG. 1;

FIG. 4 is a schematic view of the propeller protection arrangement of FIG. 1 with the plurality of guards deployed and with the connection structure open;

FIG. 5 is a schematic view of another angular configuration of the propeller protection device of FIG. 4;

FIG. 6 is a schematic view of the propeller protection device of FIG. 5 with the second retaining portion of the attachment structure removed;

FIG. 7 is a schematic view of a protector in the propeller protection device of FIG. 6 after rotation to a folded position;

FIG. 8 is a schematic view of a plurality of protective members of the propeller protection apparatus in an extended configuration in accordance with another embodiment of the present application;

FIG. 9 is a schematic view of the plurality of guards of the propeller protection device of FIG. 8 in a folded state;

fig. 10 is a schematic illustration of an exploded configuration of a horn and rotor arrangement of a drone of the drone system according to one embodiment of the present application, prior to assembly with a propeller protection device;

figure 11 is a schematic view of the unmanned aerial vehicle of figure 10 with the horn and rotor arrangement assembled with the propeller protection arrangement;

figure 12 is a schematic view of an alternate angle of the unmanned aerial vehicle of figure 10 after the horn and rotor arrangement has been assembled with the propeller protection arrangement;

fig. 13 is a schematic view of a propeller protection device assembled with an arm and rotor arrangement of a drone according to another embodiment of the present application.

It is noted that the drawings are not necessarily to scale and are merely illustrative in nature and not intended to obscure the reader.

Description of reference numerals:

10. a propeller protection device; 11. a base; 111. a mounting surface; 112. a groove; 1121. a trench wall; 113. a base body; 1131. a seat body portion; 1132. a lid portion; 114. a connecting structure; 1141. a first clamping part; 1142. a second clamping part; 12. a protective member; 121. a limiting surface; 122. a support portion; 123. a blocking portion; 13. a first rotating shaft; 14. a second rotating shaft; 15. a flexible member; 21. a propeller; 22. a motor; 23. a motor base; 24. a machine arm.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more clear, the technical solutions of the present application will be described below in detail and completely with reference to the accompanying drawings of the embodiments of the present application. It should be apparent that the described embodiment is one embodiment of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the application without any inventive step, are within the scope of protection of the application.

It is to be noted that, unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which this application belongs. If the description "first", "second", etc. is referred to throughout, the description of "first", "second", etc. is used only for distinguishing similar objects, and is not to be construed as indicating or implying a relative importance, order or number of technical features indicated, it being understood that the data described in "first", "second", etc. may be interchanged where appropriate. If "and/or" is presented throughout, it is meant to include three juxtapositions, exemplified by "A and/or B" and including either scheme A, or scheme B, or schemes in which both A and B are satisfied. Furthermore, spatially relative terms, such as "above," "below," "top," "bottom," and the like, may be used herein for ease of description to describe one element or feature's spatial relationship to another element or feature as illustrated in the figures, and should be understood to encompass different orientations in use or operation in addition to the orientation depicted in the figures.

The application provides a screw protection device, this screw protection device is used for protecting its screw after installing to rotor type unmanned aerial vehicle.

Fig. 1 shows a schematic view of a plurality of protective members 12 of a propeller protection device 10 according to an exemplary embodiment in an unfolded state. Fig. 2 shows a schematic view of the plurality of protective members 12 of the propeller protection 10 of fig. 1 in a folded state. Fig. 3 shows an exploded view of the propeller protection device 10 of fig. 1. Fig. 4 shows a schematic view of the plurality of protective members 12 of the propeller protection device 10 of fig. 1 in an unfolded state and with the connecting structure 114 open. Fig. 5 shows a schematic view of another angle of the propeller protection device 10 of fig. 4. Fig. 6 shows a schematic view of the propeller protection device 10 of fig. 5 with the second clamping portion 1142 of the connecting structure 114 removed. Fig. 7 shows a schematic structural view of one of the protecting members 12 in the propeller protection device 10 of fig. 6 after being rotated to a folded position, wherein the folded position of the protecting members 12 can be understood as a position in which the protecting members 12 are located when the plurality of protecting members 12 are in a folded state.

Fig. 10 is an exploded schematic view of the arm 24 and the rotor device of the drone system of an embodiment before being assembled with the propeller protection device 10, wherein the propeller protection device 10 is the propeller protection device 10 of the embodiment shown in fig. 1 to 7. Fig. 11 shows a schematic view of the structure of the unmanned aerial vehicle of fig. 10 after the horn 24 and the rotor device are assembled with the propeller protection device 10. Fig. 12 shows a schematic view of the structure of the arm 24 and the rotor assembly of the drone of fig. 10 at another angle after assembly with the propeller protection device 10, when the position of the propeller 21 of the rotor assembly is different from that of fig. 11.

As shown in fig. 1-7, in some embodiments of the present application, the propeller protection device 10 includes a base 11. The propeller protection device 10 can be mounted to the drone through the base 11. The installation position of base 11 on unmanned aerial vehicle, with unmanned aerial vehicle's mounting means can be for multiple. For example, as shown in fig. 10-12, in some embodiments, the drone includes a horn 24 and a rotor device mounted on the horn 24, the rotor device powering the drone, the rotor device including a propeller 21, a motor 22 for driving the propeller 21 to rotate, and a motor mount 23 for mounting the motor 22. The base 11 of the propeller protection device 10 may be mounted in cooperation with at least one of the motor 22, the motor base 23, and the horn 24.

The propeller protection device 10 further comprises a plurality of protection members 12, each protection member 12 having a first end connected to the base 11 and a second end extending in a direction away from the base 11. If the direction perpendicular to the rotation axis of the propeller 21 (coaxial with the output shaft of the motor 22) after the base 11 is installed on the drone is defined as the radial direction of the base 11, the whole of the protection member 12 may extend substantially along the radial direction of the base 11, specifically including but not limited to the whole of the protection member 12 being parallel to the radial direction of the base 11 or inclined upward relative to the radial direction of the base 11 or inclined downward relative to the radial direction of the base 11. In addition, the extending directions of any two protectors 12 may be the same or different.

The first end of at least one of the protectors 12 is rotatable relative to the base 11 so that the plurality of protectors 12 have an expanded state radially expanded relative to the base 11 and a collapsed state in which each adjacent protector 12 is brought close to each other. As shown in fig. 11 and 12, when the plurality of protectors 12 are in the unfolded state, the plurality of protectors 12 form a receiving space for receiving the propeller 21, and the plurality of protectors 12 can at least partially shield the outer peripheral edge of the disk formed by the rotation of the propeller 21, thereby protecting the propeller 21 (particularly, the propeller 21 in the rotated state), reducing the risk of the rotating propeller 21 to a person, and avoiding damage to the propeller 21 itself when the propeller 21 touches another object in the event of a collision or the like. When the plurality of protecting members 12 are in the folded state, each adjacent protecting member 12 is close to each other, so that the propeller protecting device 10 can be folded into a smaller volume, thereby facilitating storage and carrying.

The propeller protection device 10 is mainly used to protect the rotating propeller 21, and it is needless to say that when the propeller 21 stops rotating and is in a stationary state, the stationary propeller 21 can be protected if the plurality of protectors 12 of the propeller protection device 10 are in an extended state.

As shown in fig. 1, 2, 11 and 12, in some embodiments of the present application, the first end of the at least one protection member 12 is rotatable relative to the base 11 about the first rotation axis 13. Wherein, when propeller protection device 10 is installed to unmanned aerial vehicle on back, first pivot 13 is on a parallel with the rotation axis of propeller 21 and rather than spaced apart. That is, if a direction parallel to the rotation axis of the propeller 21 (coaxial with the output shaft of the motor 22) after the base 11 is mounted on the drone is defined as an axial direction of the base 11, the first rotation axis 13 is parallel to the axial direction of the base 11. The plurality of protective members 12 may be positioned substantially in the same plane or curved surface in which at least one of the plurality of protective members 12 rotates; at least two of the plurality of protective members 12 may also be positioned in different planes or curved surfaces, with at least one of the plurality of protective members 12 rotating in its own plane or curved surface. The above-mentioned protection member 12 is rotated by the first rotation shaft 13 parallel to the rotation shaft of the propeller 21, and the rotation mode is simpler and easier to realize.

In the case where the protector 12 is configured to rotate as described above, when the propeller protection device 10 needs to be folded, one of the plurality of protectors 12 may be rotated while the other is kept stationary, or all of the plurality of protectors 12 may be rotated, as long as the plurality of protectors 12 can be switched between the unfolded state and the folded state as a whole. Taking three protectors 12 as an example, as shown in fig. 1 to 7, the protector 12 located in the middle of the three protectors 12 is not substantially rotated, and when both the protectors 12 located on both sides thereof are rotated toward the protector 12 located away from the middle, the three protectors 12 can be put in an unfolded state, and when both the protectors 12 located on both sides thereof are rotated toward the protector 12 located close to the middle, the three protectors 12 can be put in a folded state; alternatively, the three protectors 12 may be rotated, when the two protectors 12 on both sides are rotated toward the protector 12 far from the middle, the middle protector 12 may be rotated toward any one side, and at this time, the three protectors 12 may be in the unfolded state, when the two protectors 12 on both sides are rotated toward the protector 12 near the middle, the protector 12 in the middle may also be rotated toward any one side, but the protector 12 on the side opposite to the rotation direction of the protector 12 in the middle may be rotated toward the protector 12 in the middle to a slightly greater extent, so as to ensure that the three protectors 12 are close to each other.

Further, the specific rotation manner (i.e., the direction of the rotation axis) of the protector 12 to be rotated may not be limited to the above-described manner, and in other embodiments, may be any other manner that can switch the plurality of protectors 12 as a whole between the deployed state and the folded state.

For example, fig. 8 shows a schematic structural view of a plurality of protection members 12 of the propeller protection device 10 according to another embodiment in a deployed state. Fig. 9 shows a schematic view of the plurality of protective members 12 of the propeller protection 10 of fig. 8 in a folded state. In other embodiments of the present application, as shown in fig. 8 and 9, the first ends of all the protectors 12 may be rotated relative to the base 11 about the second rotation axis 14. When the propeller protection device 10 is mounted on the unmanned aerial vehicle, the second rotating shaft 14 corresponding to one protection member 12 is perpendicular to the rotating shaft of the propeller 21 or inclined relative to the rotating shaft of the propeller 21, that is, the rotation of the protection member 12 is performed substantially in a vertical plane. The protector 12 can be considered a reference. In order to change the protector 12 from the unfolded state in which the protector 12 is radially unfolded to the folded state in which the protector 12 is folded toward each other after the rotation, the second rotating shafts 14 of the protectors 12 on both sides of the protector 12 as the reference member may be appropriately designed. Specifically, the second rotating shafts 14 corresponding to the protectors 12 on both sides of the protector 12 as the reference member are respectively disposed in such a manner as to be inclined toward the protector 12, and the rotations of these protectors 12 are also performed substantially in the vertical plane. The second rotating shafts 14 corresponding to the protectors 12 are inclined toward the protectors 12 serving as reference members, so that the protectors 12 can be moved toward the protectors 12 serving as reference members after being rotated, and finally, the protectors 12 are in a folded state in which they are moved toward each other.

In the particular embodiment shown in fig. 8 and 9, there are three protectors 12, three protectors 12 in fig. 8 being in the unfolded state and three protectors 12 in fig. 9 being in the folded state after being turned upward. The second rotation shaft 14 of the protector 12 positioned in the middle of the three protectors 12 is perpendicular to the rotation shaft of the propeller 21. The second rotating shafts 14 of the two protecting members 12 on the two sides are respectively obliquely arranged towards the middle direction, and after the two protecting members 12 rotate upwards around the respective second rotating shafts 14, the two protecting members 12 can be close to each other towards the middle protecting member 12, so that the three protecting members 12 are finally in a folded state, and the size of the propeller protecting device 10 is further reduced.

As shown in fig. 1 to 7, in some embodiments of the present application, the first rotating shaft 13 passes through the first end of the corresponding protecting member 12, so that the protecting member 12 can rotate substantially around the first end thereof, and the present application has a simple structure and is easy to manufacture. Preferably, the first rotation shaft 13 is located at a center position of the first end of the protection member 12. Of course, in other embodiments not shown in the figures, the first rotating shaft 13 may be spaced from the first end of the corresponding protecting member 12, and the rotation of the first end of the protecting member 12 may be regarded as an eccentric rotation.

As shown in fig. 1 to 7 and 10 to 12, in some embodiments of the present application, the base 11 is provided with a mounting surface 111 and a groove 112, and opposite ends of the groove 112 are open, that is, the groove 112 is a through groove. One end of the groove 112 is open to the circumferential outer side of the base 11, and the other end is open on the mounting surface 111, that is, the inner space of the groove 112 and the inner space of the mounting surface 111 communicate with each other. The first end of the at least one protector 12 is rotatably disposed within the recess 112. The first end of the protector 12 projects into the groove 112 from the circumferential outer side of the base 11, and can be located at least partially in the space inside the mounting surface 111 through the opening of the groove 112 on the mounting surface 111. The "located in the space inside the mounting surface 111" may be that at least a portion of the first end of the protector 12 protrudes from the mounting surface 111 toward the space inside, or that at least a portion of the first end of the protector 12 is flush with the mounting surface 111, and there is no portion protruding inward from the mounting surface 111. The first end of the protection member 12 rotatably disposed in the groove 112 is provided with a position-limiting portion. When the propeller protection device 10 needs to be installed, the protection members 12 are firstly in the unfolded state, that is, each protection member 12 is rotated to the respective unfolded position, and then the propeller protection device 10 is installed on the unmanned aerial vehicle. At this time, the motor 22 and/or the motor base 23 of the drone are attached to and clamped with the position of the mounting surface 111 corresponding to the groove 112, so that the protection member 12 cannot freely rotate, and the protection members 12 are kept in the unfolded state. Realize keeping a plurality of protections 12 in the state of expanding through above-mentioned mode, make full use of the original structure of unmanned aerial vehicle, can make screw protection device 10's structure simpler like this.

The specific structure of the limiting portion provided at the first end of the protective member 12 may be various. For example, as shown in fig. 3, 5, 6, and 12, in some embodiments of the present application, the spacing portion includes a spacing surface 121. When the plurality of protection members 12 are in the unfolded state, each protection member 12 is in the respective unfolded position, an end surface of the first end of each protection member 12 facing the inner side space of the mounting surface 111 is a limiting surface 121, the limiting surface 121 is flush with the mounting surface 111, and the outer contour of an area surrounded by the mounting surface 111 and each limiting surface 121 is matched with the shape of the cross section of a part (namely, a part where the motor 22 and/or the motor base 23 is/are jointed with the mounting surface 111 and the limiting surface 121) where the unmanned aerial vehicle is jointed. When the base 11 is assembled with the motor 22 and/or the motor base 23 of the unmanned aerial vehicle, the outer side surface of the motor 22 and/or the motor base 23 is attached to the mounting surface 111 and the limiting surface 121, so that the protection member 12 is limited and fixed to the unfolding position. Of course, the specific structure of the limiting portion is not limited to this, and in other embodiments not shown in the drawings, the limiting portion may also include an elastic portion disposed on the end surface of the first end of the protection member 12, after the propeller protection device 10 is mounted to the unmanned aerial vehicle, the elastic portion of the protection member 12 protrudes inward from the mounting surface 111, and the motor 22 and/or the motor base 23 of the unmanned aerial vehicle extrudes the protruding elastic portion, so that the protection member 12 is limited and fixed to the deployment position.

As shown in fig. 1 to 7 and 10 to 12, in some embodiments of the present disclosure, the base 11 includes a base body 113, the base body 113 is annular, the first ends of the plurality of protectors 12 are spaced apart along a circumferential direction of the base body 113, and the inner side surface of the base body 113 forms the mounting surface 111. Annular base body 113 can directly overlap and establish the circumference outside at unmanned aerial vehicle's motor 22 and/or motor base 23, and it is more convenient to install to also can laminate compactlyer with unmanned aerial vehicle's structure. Further, when the protection member 12 is in the extended position, the end face of the first end of the protection member facing the inner space of the mounting surface 111 is set to be the limiting surface 121, the limiting surface 121 is flush with the mounting surface 111, and the space enclosed by the mounting surface 111 and each limiting surface 121 can be regarded as the inner space of the annular mounting surface 111, and the side wall (mainly formed by the mounting surface 111 and the limiting surface 121) of the inner space is in contour fit with the joint part of the motor 22 and/or the motor base 23 of the unmanned aerial vehicle, so that after the base 11 is assembled with the motor 22 and/or the motor base 23 of the unmanned aerial vehicle, the outer side surface of the motor 22 and/or the motor base 23 is in fit with the side wall of the inner space of the base 11, and the protection member 12 is limited and fixed to the extended position. It should be noted that the specific structure of the base body 113 is not limited to this, and in other embodiments not shown in the drawings, the base body 113 may also be another structure that can be attached to the motor 22 and/or the motor base 23 of the drone.

In some embodiments of the present application, the propeller protection device 10 further comprises a positioning structure disposed at a first end of the base 11 and/or the at least one protector 12. The first end of the protector 12 can be positioned to a predetermined position during rotation thereof by a positioning structure. Wherein the predetermined positions include an unfolded position where the first ends of the protectors 12 are in the unfolded state of the plurality of protectors 12, and/or a folded position where the first ends of the protectors 12 are in the folded state of the plurality of protectors 12. The positioning structure enables a user to know when the protectors 12 have been rotated to the unfolded positions (where the protectors 12 are in the unfolded state) and/or the folded positions (where the protectors 12 are in the folded state) during the rotation of the protectors 12, thereby facilitating the operation and improving the user experience.

Further, as shown in fig. 1 to 4 and fig. 7, in some embodiments, the base 11 is provided with a groove 112, the first end of at least one protection member 12 is rotatably disposed in the groove 112, and the positioning structure includes at least one side groove wall 1121 of the groove 112 distributed along the rotation direction of the protection member 12 disposed therein. The angle and position of the slot walls 1121 of the corresponding recesses 112 are appropriately designed to allow the protector 12 to be in the deployed position and/or the folded position when the protector 12 is rotated to engage at least one of the slot walls 1121.

For example, in the specific embodiment shown in fig. 1 to 7, the base body 113 includes a seat portion 1131 and a cover portion 1132, the groove 112 is opened on the seat portion 1131, at this time, the top of the groove 112 is also in an open state, the first rotating shaft 13 is connected in the groove 112, the first end of the protection member 12 is threaded on the first rotating shaft 13 from the top of the groove 112, the protection member 12 can rotate within a certain angle range, and the cover portion 1132 is clamped in the clamping slot of the seat portion 1131 by a convex rib and/or is bonded with the seat portion 1131 by glue dispensing or the like. The "angular range" may be defined by the positions of the two side walls of the groove 112, or by additional structures. The protector 12 located in the middle of the three protectors 12 does not substantially rotate, and the two protectors 12 located on both sides thereof need to rotate toward the middle. The two side protectors 12 may be positioned in their folded positions by means of cooperation with the groove walls 1121 of the groove 112. Specifically, the positioning structure includes the groove 112 for the protection members 12 at both sides near the middle groove wall 1121, the groove wall 1121 is approximately parallel to the extending direction of the protection member 12 at the middle, when the protection members 12 at both sides are rotated to be engaged with the respective groove wall 1121, the protection members 12 can not be rotated any more and are positioned to the folded position.

It should be noted that in the particular embodiment shown in fig. 7, the protector 12 to be rotated is not provided with a positioning structure in its deployed position. The protection member 12 is configured to be in a shape fitting with the motor 22 and/or the motor base 23 of the drone by using the aforementioned limiting surface 121 and the mounting surface 111 to limit the protection member 12 in the deployed position, and before the propeller protection device 10 is assembled, a user can manually rotate the protection member 12 to be rotated to a substantially deployed position, so that a small deviation between the position of the protection member 12 and the deployed position is allowed. After the propeller protection device 10 is assembled to the unmanned aerial vehicle, the motor 22 and/or the motor base 23 of the unmanned aerial vehicle are attached to the mounting surface 111 of the base 11 and the limiting surface 121 of the protection member 12, and the position of the protection member 12 can be automatically corrected in the attaching process due to the characteristic of profile adaptation, so that the protection member 12 can be finally and accurately limited at the unfolding position.

Of course, in other embodiments not shown in the figures, the corresponding protector 12 may also be positioned in the deployed position by the groove wall 1121 of the groove 112. Specifically, taking three protection members 12 as an example, the positioning structure includes groove walls 1121 formed at the outer sides of the grooves 112 where the protection members 12 are located on both sides, the groove walls 1121 are parallel to the extending direction of the protection members 12 when the protection members 12 are in the deployed position, and when the protection members 12 on both sides rotate to be attached to the respective groove walls 1121, the protection members 12 cannot rotate any more and are positioned to the deployed position; alternatively, the positioning structure may be other types of positioning structures, such as a positioning block, a positioning mark, and the like.

Because there may be the difference in the unmanned aerial vehicle's that screw protection device 10 protected configuration, rotor device/horn structure and size etc, in order to realize the better protection effect to the unmanned aerial vehicle screw, need carry out rational design according to unmanned aerial vehicle's actual conditions and demand to the quantity of protection piece 12, the mode of setting and the concrete structure of screw protection device 10. For example, the number of the protectors 12 may be designed to be 4 to 6 for the case where the size of the propeller of the rotor apparatus of the unmanned aerial vehicle is large.

As shown in fig. 1 to 7 and 10 to 12, in some embodiments of the present application, the protection member 12 includes a supporting portion 122 and a blocking portion 123, a first end of the supporting portion 122 is connected to the base 11, and the blocking portion 123 is connected to a second end of the supporting portion 122 and is bent upward relative to the supporting portion 122. The supporting portion 122 may be perpendicular to the axial direction of the base 11, or may form an acute angle with the axial direction of the base 11. When base 11 is installed to unmanned aerial vehicle's motor 22 and/or motor base 23 on, supporting part 122 generally is located the below of screw 21, and the portion 123 that blocks is buckled for supporting part 122 upwards this moment, and the portion 123 that blocks is located the rotatory outside of the oar dish outer peripheral edges that forms of screw 21, plays the effect of sheltering from to it protects screw 21. Preferably, the blocking portion 123 is curved inward, so that the connecting position of the blocking portion 123 and the supporting portion 122 and the free end of the blocking portion 123 are prevented from having corners, and even if the protector 12 touches a person, the possibility of injury of the protector 12 to the person can be reduced.

It should be noted that in the specific embodiment shown in the drawings, the protector 12 has a rod shape, but of course, in other embodiments, the protector 12 may have a sheet shape. The specific structure of the protector 12 is not limited to this, and other structures capable of realizing a protection function may be employed in other embodiments not shown in the drawings. For example, the protection member 12 includes two support portions 122 and two blocking portions 123, the two support portions 122 are spaced apart from each other along the extension direction of the rotation axis of the propeller 21, a first end of each support portion 122 is connected to the base 11, and the blocking portion 123 is connected to second ends of the two support portions 122, so that the two support portions 122 and the blocking portion 123 connected therebetween form a cover structure, and the propeller 21 is protected by the cover structure; alternatively, the protection member 12 comprises a straight or curved rod, which forms an acute angle with the rotation axis of the propeller 21, and the end of the straight or curved rod remote from the base 11 can be located at the periphery of the disc formed by the rotation of the propeller 21.

The mounting means between screw protection device 10 and the unmanned aerial vehicle can be detachable, also can be just fixed as an organic whole non-detachable mode with unmanned aerial vehicle after the installation. In some embodiments of this application, base 11 can detachably install to unmanned aerial vehicle on, uses more in a flexible way, and unmanned aerial vehicle screw protection device 10 can take off and accomodate and carry when need not to use, and is more convenient. Of course, in some embodiments, the propeller protection device 10 may also be non-detachable, and when the unmanned aerial vehicle does not need to be used, the protection members 12 of the propeller protection device 10 are folded, and the propeller protection device 10 may also act together with the folding of the arm 24 of the unmanned aerial vehicle, at this time, it needs to be noticed that the propeller protection device 10 cannot affect the subsequent operations such as folding of the unmanned aerial vehicle itself.

Further, in some embodiments of the present application, the base 11 includes a base body 113 and a connecting structure 114 connected to the base body 113, the base body 113 is sleeved on the motor 22 and/or the motor base 23 of the unmanned aerial vehicle, and the connecting structure 114 is detachably connected to the corresponding arm 24 of the unmanned aerial vehicle. On the one hand, base body 113 closely cooperates with unmanned aerial vehicle's motor 22 and/or motor base 23, and on the other hand, rethread connection structure 114 is connected with unmanned aerial vehicle's corresponding horn 24, can make propeller protection device 10's installation more reliable like this to overall structure is compacter. Preferably, as shown in fig. 3 to 7, in some embodiments, the connecting structure 114 includes a first fastening part 1141 and a second fastening part 1142, one side of the first fastening part 1141 is rotatably connected to one side of the second fastening part 1142, when the first fastening part 1141 is fastened to the second fastening part 1142, the arm 24 is received in a receiving space defined by the first fastening part 1141 and the second fastening part 1142, and the other side of the first fastening part 1141 is fixedly connected to the other side of the second fastening part 1142. The first clamping part 1141 and the second clamping part 1142 can not be separated all the time, so that the possibility of careless loss of parts in the dismounting process is avoided. The other side of the first fastening part 1141 and the other side of the second fastening part 1142 may be detachably connected to each other, for example, the first fastening part and the second fastening part may be fastened together by a fastener, or the second fastening part and the second fastening part may be bonded together by a hook and loop fastener.

As shown in fig. 2, in some embodiments of the present application, when the plurality of protectors 12 are in the folded state, the entirety of the plurality of protectors 12 is disposed along the extending direction of the corresponding horn 24 of the drone. That is, the entirety of the plurality of protection members 12 is disposed along the extending direction of the center line of the connecting structure 114, so that the propeller protection device 10 is substantially elongated after the plurality of protection members 12 are folded, thereby facilitating the storage. Simultaneously, to the non-detachable condition between screw protection device 10 and the unmanned aerial vehicle, the extending direction after a plurality of protection pieces 12 are folded also can avoid interfering with the folding emergence of unmanned aerial vehicle's horn 24 as far as possible. Of course, the extending direction of the plurality of protection members 12 after being folded is not limited thereto, and may be perpendicular to the base 11 and the connecting structure 114, for example.

In the embodiment shown in fig. 1 to 12, no other connecting structure is provided between the protecting members 12, and the switching between the unfolded state and the folded state of the protecting members 12 is realized by the rotation of the first end of at least one protecting member 12, so that the structure is simple and the use is convenient. Of course, in other embodiments, other connecting structures may be provided between the plurality of protectors 12.

Fig. 13 shows a schematic structural view of the propeller protection device 10 of another embodiment assembled with the horn 24 and the rotor device of the drone. In other embodiments of the present application, as shown in fig. 13, the propeller protection device 10 further comprises a flexible member 15, and the flexible member 15 is connected to the plurality of protection members 12 in sequence. When the plurality of protective members 12 are in the deployed state, the flexible member 15 can be commonly supported by the plurality of protective members 12, thereby further enhancing the protective effect. Furthermore, due to the flexible nature of the flexible member 15, the flexible member 15 does not affect the folding of the plurality of protective members 12 when they are required to be folded. Preferably, the flexible member 15 is plural, and the plural flexible members 15 are provided at intervals along the extending direction of each protection member 12. The flexible member 15 may be made of nylon, carbon fiber, etc., and the flexible member 15 may include a flexible rope and/or a flexible belt. When the flexible belt is adopted, if the width of the flexible belt is large enough, the requirement of strengthening protection can be met by arranging one flexible belt. Further, the flexible member 15 is attached to the blocking portion 123 of the protection member 12.

The application still provides an unmanned aerial vehicle system, the embodiment of the unmanned aerial vehicle system according to this application includes unmanned aerial vehicle and installs the screw protection device to unmanned aerial vehicle, and wherein, unmanned aerial vehicle includes horn 24 and installs the rotor device on horn 24, and screw protection device is used for protecting rotor device's screw 21, and screw protection device is foretell screw protection device. The rotor device provides power for unmanned aerial vehicle, and the rotor device includes screw 21, is used for driving the rotatory motor 22 of screw 21 and is used for installing motor 22's motor base 23. The base 11 of the propeller protection device 10 may be mounted in cooperation with at least one of the motor 22, the motor base 23, and the horn 24.

For the embodiments of the present application, it should also be noted that, in a case of no conflict, the embodiments of the present application and features of the embodiments may be combined with each other to obtain a new embodiment.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and the scope of the present application shall be subject to the scope of the claims.

Claims (20)

1. A propeller protection device, comprising:

a base (11) by means of which base (11) the propeller protection device can be mounted to a drone;

the propeller protection device comprises a plurality of protection pieces (12), wherein the first ends of the protection pieces (12) are connected to the base (11) and the second ends of the protection pieces (12) extend along the direction departing from the base (11), the first end of at least one protection piece (12) can rotate relative to the base (11), so that the protection pieces (12) have an unfolded state and a folded state, wherein the unfolded state is radially unfolded relative to the base (11), and each adjacent protection piece (12) is mutually closed, when the protection pieces (12) are in the unfolded state, the protection pieces (12) form a containing space for containing a propeller (21), and the protection pieces (12) can at least partially shield the outer periphery of a propeller disc formed by the rotation of the propeller (21).

2. The propeller protection device of claim 1,

the first end of the at least one protection member (12) is rotatable relative to the base (11) about a first axis of rotation (13), wherein the first axis of rotation (13) is parallel to and spaced from the axis of rotation of the propeller (21) when the propeller protection device is mounted to the drone.

3. The propeller protection device of claim 2,

the first rotating shaft (13) penetrates through the first end of the corresponding protection piece (12).

4. The propeller protection device of claim 2,

the base (11) is provided with a mounting surface (111) and a groove (112), two opposite ends of the groove (112) are open, one end of the groove is open towards the circumferential outer side of the base (11), the other end of the groove is open on the mounting surface (111), the first end of the at least one protection piece (12) is rotatably arranged in the groove (112), the first end of the protection piece (12) is provided with a limiting part,

when the propeller protection device needs to be installed, the protection pieces (12) are firstly in the unfolding state, then the propeller protection device is installed on the unmanned aerial vehicle, and at the moment, the motor (22) and/or the motor base (23) of the unmanned aerial vehicle are attached to the position, corresponding to the groove (112), of the installation surface (111) and tightly clamped with the limiting portion, so that the protection pieces (12) are kept in the unfolding state.

5. The propeller protection device of claim 4,

the limiting part comprises a limiting surface (121), and when the plurality of protection parts (12) are in the unfolding state, the limiting surface (121) is flush with the mounting surface (111) and the outer contour of an area enclosed by the limiting surface (121) and the mounting surface (111) together is matched with the cross section of the part, attached to the unmanned aerial vehicle, of the unmanned aerial vehicle in shape.

6. The propeller protection device of claim 4,

the base (11) comprises a base body (113), the base body (113) is annular, the first ends of the protection pieces (12) are arranged at intervals along the circumferential direction of the base body (113), and the inner side face of the base body (113) forms the mounting face (111).

7. The propeller protection device of any one of claims 2 to 6, further comprising:

and a positioning structure arranged at the first end of the base (11) and/or the at least one protecting member (12), and the positioning structure can be used for positioning the protecting member (12) to a preset position in the rotating process of the first end of the protecting member (12), wherein the preset position comprises an unfolded position of the first end of the protecting member (12) when the protecting members (12) are in the unfolded state and/or a folded position of the first end of the protecting member (12) when the protecting members (12) are in the folded state.

8. The propeller protection device of claim 7,

the base (11) is provided with a groove (112), the first end of the at least one protection piece (12) is rotatably arranged in the groove (112), and the positioning structure comprises at least one side groove wall (1121) of the groove (112) distributed along the rotating direction of the protection piece (12) arranged in the groove.

9. The propeller protection device of claim 1,

the first ends of all the protecting pieces (12) can rotate around a second rotating shaft (14) relative to the base (11), when the propeller protecting device is installed on the unmanned aerial vehicle, the second rotating shaft (14) corresponding to one protecting piece (12) is perpendicular to the rotating shaft of the propeller (21) or is obliquely arranged relative to the rotating shaft of the propeller (21), and the second rotating shafts (14) corresponding to the protecting pieces (12) positioned on two sides of the protecting piece (12) are respectively arranged in a mode of inclining towards the protecting piece (12).

10. The propeller protection device of claim 1,

the protection piece (12) comprises a supporting portion (122) and a blocking portion (123), a first end of the supporting portion (122) is connected to the base (11), and the blocking portion (123) is connected to a second end of the supporting portion (122) and is arranged in an upward bending mode relative to the supporting portion (122).

11. The propeller protection device of claim 1,

the protection member (12) comprises two supporting portions (122) and two blocking portions (123), the two supporting portions (122) are arranged at intervals along the extension direction of the rotating shaft of the propeller (21), the first end of each supporting portion (122) is connected to the base (11), and the second ends of the two supporting portions (122) are connected to the blocking portions (123).

12. The propeller protection device of claim 10 or 11,

the blocking part (123) is in an arc shape which is bent inwards.

13. The propeller protection device of claim 1,

the base (11) is detachably mountable to the drone.

14. The propeller protection device of claim 13,

base (11) include base body (113) and connect connection structure (114) on base body (113), base body (113) cover is established on unmanned aerial vehicle's motor (22) and/or motor base (23), connection structure (114) with the connection can be dismantled to corresponding horn (24) of unmanned aerial vehicle.

15. The propeller protection device of claim 14,

connection structure (114) include first chucking part (1141) and second chucking part (1142), one side of first chucking part (1141) with one side rotation of second chucking part (1142) is connected, works as first chucking part (1141) with second chucking part (1142) lock back, horn (24) are acceptd in first chucking part (1141) with in the accommodation space that second chucking part (1142) enclose, the opposite side of first chucking part (1141) with the opposite side connection of second chucking part (1142) is fixed.

16. The propeller protection device of claim 1,

when the plurality of protection members (12) are in the folded state, the whole of the plurality of protection members (12) is arranged along the extending direction of the corresponding arm (24) of the unmanned aerial vehicle.

17. The propeller protection device of claim 1, further comprising:

and the flexible piece (15) is sequentially connected to the protection pieces (12), and when the protection pieces (12) are in the unfolded state, the flexible piece (15) can be commonly supported by the protection pieces (12).

18. The propeller protection device of claim 17,

the number of the flexible members (15) is plural, and the plural flexible members (15) are arranged at intervals along the extending direction of each of the protection members (12).

19. The propeller protection device of claim 17 or 18,

the flexible member (15) comprises a flexible cord, and/or a flexible strap.

20. An unmanned aerial vehicle system comprising an unmanned aerial vehicle and a propeller protection device mounted to the unmanned aerial vehicle, wherein the unmanned aerial vehicle comprises a horn (24) and a rotor device mounted on the horn (24), the propeller protection device being for protecting a propeller (21) of the rotor device, the propeller protection device being as claimed in any one of claims 1 to 19.

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