WO2021078201A1

WO2021078201A1 - Propeller protection cover, propeller assembly and unmanned aerial vehicle

Info

Publication number: WO2021078201A1
Application number: PCT/CN2020/122910
Authority: WO
Inventors: 梁智颖
Original assignee: 深圳市道通智能航空技术有限公司
Priority date: 2019-10-22
Filing date: 2020-10-22
Publication date: 2021-04-29
Also published as: CN211442752U

Abstract

A propeller protection cover, a propeller assembly and an unmanned aerial vehicle. The propeller protection cover comprises a protection support (1), a mounting seat (2) and a fastener (3). The mounting seat (2) is connected to the protection support (1), a mounting groove is provided on the mounting base (2), a fitting hole (24) is provided on a bottom wall of the mounting groove, an arm (200) of an unmanned aerial vehicle is fitted in the mounting groove, and a part of the arm (200) extends out of the fitting hole (24), the fastener (3) is rotatably provided on the mounting seat (2), the fastener (3) has a first side wall (31) and a second side wall (32) which are oppositely arranged, the fastener (3) has a locking position for locking the arm (200) and a releasing position for releasing the arm (200), in the locking position, the first side wall (31) abuts against the arm (200), and the second side wall (32) abuts against the bottom wall of the mounting seat (2), and in the releasing position, the first side wall (31) is disengaged from the arm (200). The propeller protection cover can not only ensure the stability of the connection with the arm (200), but also simplify the locking operation of the propeller protection cover, improving the user's usage satisfaction.

Description

Propeller protective cover, propeller assembly and unmanned aerial vehicle

This application claims the priority of a Chinese patent application filed with the Chinese Patent Office on October 22, 2019, the application number is 201921781671.0, and the application name is "a propeller protective cover, propeller assembly and drone", the entire content of which is incorporated by reference Incorporated in this application.

Technical field

The utility model relates to the technical field of unmanned aerial vehicles, in particular to design a propeller protective cover, a propeller assembly and an unmanned aerial vehicle.

Background technique

UAV is an unmanned tool operated by radio remote control equipment or remote control device to perform tasks. General unmanned aerial vehicles will be equipped with navigation and flight control systems, program control devices and power supply equipment. In recent years, unmanned aerial vehicles have been developed and applied in many fields, especially the hotspots of general industrial and military research. Military significance and economic status. An unmanned aerial vehicle usually includes a fuselage and an arm extending from the fuselage, each arm is provided with a propeller, and the rotation of the propeller drives the unmanned aerial vehicle to fly. However, sometimes due to mismanagement or loss of control of the UAV, the high-speed rotation of the propeller may hit hard objects and cause damage to the propeller, or the propeller will scratch people or objects. Therefore, most of the existing UAVs have a propeller protective cover, but at present The locking structure of the UAV's propeller guard and the arm is relatively complicated, which makes the operation of installing the propeller guard very inconvenient.

Utility model content

The first purpose of the present invention is to provide a propeller protective cover, which can not only ensure the stability of the connection with the arm, but also simplify the locking operation of the propeller protective cover and improve the user satisfaction.

The second purpose of the present invention is to propose a propeller assembly, which has a simple structure and is easy to assemble.

The third purpose of the utility model is to propose an unmanned aerial vehicle, which has a simple mechanism and is convenient to assemble.

In order to achieve the above technical effects, the technical scheme of the present invention is as follows:

A protective cover for a propeller, comprising: a protective bracket; a mounting seat, the mounting seat is connected to the protective bracket, the mounting seat is provided with a mounting groove, and the bottom wall of the mounting groove is provided with a matching hole, The arm of the machine is fitted in the mounting groove, and a part of the arm extends out of the matching hole; a buckle member, the buckle member is rotatably arranged on the mounting seat, and the buckle The member has a first side wall and a second side wall opposite to each other; wherein: one of the second side wall and the bottom wall of the mounting seat is provided with a card slot, and the second side wall and the mounting seat The other one of the bottom walls of the seat is provided with a latching protrusion that cooperates with the latching groove; the buckle has a locking position for locking the arm and a releasing position for releasing the arm. In the locked position, the first side wall abuts on the arm, the second side wall abuts on the bottom wall of the mounting seat, and the card projection is fitted in the card slot; In the release position, the locking protrusion is disengaged from the locking groove, and the first side wall is disengaged from the arm.

In some embodiments, the mounting seat is provided with a clamping hole, and the clamping hole is adapted to cooperate with a clamping block on the arm.

In some specific embodiments, the mounting seat has a first wall surface and a second wall surface disposed oppositely, and a third wall surface connected to the first wall surface and the second wall surface respectively, and the fastening member is rotatable The ground is provided on the first wall surface, the clamping hole is provided on the third wall surface, and the second wall surface is provided with an elastic piece abutting on the arm.

In some optional embodiments, a notch is provided on the second wall surface, one end of the elastic piece is connected to the side wall of the notch, and one end of the elastic piece away from the side wall of the notch extends into the述installation slot.

In some embodiments, a connecting lug is provided on the mounting seat, a rotating shaft is respectively provided on two opposite side walls of the connecting lug, an insertion groove and a rotating shaft hole are provided on the buckle, and the connecting lug The ear is inserted into the insertion groove and the rotating shaft is inserted into the rotating shaft hole.

In some embodiments, the shaft hole is provided with an assembling and disassembling opening that penetrates the fastener in the axial direction of the shaft hole.

In some embodiments, the mating hole is a non-circular hole.

A propeller assembly, comprising: the aforementioned propeller protection cover, a machine arm, the machine arm is fitted in the installation groove of the propeller protection cover; a motor, the motor is connected to the machine arm; the propeller, The propeller is connected with the rotating shaft of the motor.

In some specific embodiments, a matching groove is provided on the arm, and the motor is fitted in the matching groove through a connecting piece.

An unmanned aerial vehicle, comprising a fuselage and the aforementioned propeller assembly, the screw assembly is multiple, the arm of each screw assembly is connected to the fuselage, and two adjacent ones are adjacent to each other. The propeller protective cover of the screw assembly is connected.

The propeller protective cover of the utility model adopts the buckle member that can rotate relative to the installation groove to lock the arm, which not only ensures the connection stability of the propeller protective cover and the arm, but also simplifies the assembly process of the propeller protective cover and the arm , Improve assembly efficiency.

The propeller assembly of the present invention has the aforementioned propeller protective cover, so that the assembly of the propeller assembly is relatively simple and the assembly efficiency is high.

The UAV of the utility model has the aforementioned propeller assembly, so that the assembly process of the UAV is relatively simple, and the production efficiency of the UAV is improved.

The additional aspects and advantages of the present utility model will be partly given in the following description, and some will become obvious from the following description, or be understood through the practice of the present utility model.

Description of the drawings

Fig. 1 is a schematic structural diagram of a propeller protective cover provided by a specific embodiment of the present invention.

Fig. 2 is a partial structural diagram of the propeller protective cover shown in Fig. 1.

Fig. 3 is an exploded schematic diagram of a partial structure of the propeller protective cover shown in Fig. 1.

Fig. 4 is a schematic diagram of the cooperation between the propeller protective cover and the arm shown in Fig. 1.

Fig. 5 is a partial structural diagram of a propeller protective cover according to another embodiment of the present invention.

Fig. 6 is an exploded schematic view of the propeller assembly provided by the specific embodiment of the present invention.

Reference signs:

1. Protective bracket;

2. Mounting seat; 21. The first wall surface; 22. The second wall surface; 23. The third wall surface; 24. Matching hole; 25. Card slot; 26. Card hole; 27. Notch; 28. Shrapnel; 29. Connecting ear ；291. Rotating shaft;

3. Fastening member; 31, first side wall; 32, second side wall; 321, card protrusion; 33, insertion groove; 34, shaft hole;

200, machine arm; 210, card block; 220, matching slot;

300. Motor;

400. Propeller;

500. Connectors.

Detailed ways

In order to make the technical problems solved by the utility model, the technical solutions adopted and the technical effects achieved more clear, the technical solutions of the utility model will be further explained below in conjunction with the drawings and specific implementations.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial" "," "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying what is referred to The device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention.

In addition, the features defined with "first" and "second" may explicitly or implicitly include one or more of these features, which are used to distinguish and describe the features, without ordering, and without distinction. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

In the description of the present utility model, it should be noted that, unless otherwise clearly defined and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection or an optional connection. Detachable connection, or integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components. For those of ordinary skill in the art, the specific meaning of the above-mentioned terms in the present utility model can be understood under specific circumstances.

The specific structure of the propeller protective cover of the embodiment of the present invention will be described below with reference to FIGS. 1 to 5.

As shown in Figures 1 to 4, the propeller protective cover of the embodiment of the present invention includes a protective bracket 1, a mounting base 2, and a fastener 3. The mounting base 2 is connected to the protective bracket 1, and the mounting base 2 is provided with a mounting groove , The bottom wall of the mounting slot is provided with a matching hole 24, the arm 200 of the unmanned aerial vehicle is fitted in the mounting slot, and a part of the arm 200 extends out of the matching hole 24. The fastening member 3 is rotatably arranged on the mounting base 2, and the fastening member 3 has a first side wall 31 and a second side wall 32 oppositely disposed. One of the second side wall 32 and the bottom wall of the mounting base 2 is provided with a card slot 25, and the other of the second side wall 32 and the bottom wall of the mounting base 2 is provided with a card protrusion 321 that matches the card slot 25. The buckle 3 has a locked position for locking the arm 200 and a release position for releasing the arm 200. In the locked position, the first side wall 31 abuts on the arm 200, and the second side wall 32 abuts on On the bottom wall of the mounting base 2, the locking projection 321 is fitted in the locking slot 25; in the release position, the locking projection 321 is separated from the locking slot 25, and the first side wall 31 is separated from the arm 200.

It can be understood that, in the actual assembly process, the arm 200 is first fitted into the mounting groove and then the fastener 3 is rotated to move it from the release position to the locked position. Since in the locked position, the first side wall 31 of the fastener 3 abuts on the arm 200, the second side wall 32 abuts on the mounting base 2, and the second side wall 32 and the mounting base 2 The card protrusion 321 cooperates with the card slot 25. Therefore, the first side wall 31 can better confine the arm 200 in the mounting groove to prevent the arm 200 from coming out, and the engagement of the protrusion 321 between the second side wall 32 and the mounting seat 2 and the card slot 25 can avoid buckling. The phenomenon in which the piece 3 comes out of the mounting base 2 so that the arm 200 comes out of the mounting groove. In addition, in the propeller protective cover of the present invention, the user only needs to rotate the fastener 3 to complete the connection between the propeller protective cover and the arm 200, which simplifies the connection between the propeller protective cover and the arm 200 while ensuring the stability of the connection between the propeller protective cover and the arm 200. The assembling operation enables the user to lock the arm 200 to the propeller protection cover relatively easily, which improves the user satisfaction.

The propeller protective cover of the utility model adopts the buckle 3 which can rotate relative to the installation groove to lock the arm 200, which not only ensures the connection stability of the propeller protective cover and the arm 200, but also simplifies the propeller protective cover and the arm 200 The 200 assembly process improves assembly efficiency.

In some embodiments, as shown in FIG. 2, the mounting base 2 is provided with a clamping hole 26, and the clamping hole 26 is suitable for mating with the clamping block 210 on the arm 200. It is understandable that the matching of the clamping hole 26 on the mounting base 2 and the clamping block 210 on the arm 200 can better ensure the stability of the connection between the arm 200 and the mounting base 2, thereby further preventing the arm 200 from being removed from the mounting base. 2. The phenomenon of prolapse. It should be supplemented here that the specific shapes of the locking hole 26 and the locking block 210 are not limited here, and the shape of the locking block 210 and the locking hole 26 can be selected according to actual needs.

In some specific embodiments, as shown in FIG. 5, the mounting seat 2 has a first wall 21 and a second wall 22 opposite to each other, and a third wall 23 connected to the first wall 21 and the second wall 22, respectively. The fitting 3 is rotatably provided on the first wall 21, the locking hole 26 is provided on the third wall 23, and the second wall 22 is provided with an elastic piece 28 that abuts on the arm 200.

It is understandable that the three walls of the mounting base 2 are provided with a structure of the limiter arm 200, so that the positioning of the arm 200 is realized from at least three directions, and the connection between the arm 200 and the mounting base 2 is improved. Stability, so as to further avoid the phenomenon of the arm 200 falling out of the mounting base 2.

In some alternative embodiments, as shown in FIG. 5, the second wall 22 is provided with a notch 27, one end of the elastic piece 28 is connected to the side wall of the notch 27, and one end of the elastic piece 28 away from the side wall of the notch 27 extends Into the installation slot. It is understandable that when the arm 200 is locked into the installation slot, since the end of the elastic piece 28 away from the side wall of the notch 27 extends into the installation groove, there will be a greater force between the elastic piece 28 and the arm 200, which improves The connection between the arm 200 and the mounting base 2 is stable, so as to further avoid the phenomenon that the arm 200 comes out of the mounting base 2. It should be noted here that, in order to avoid the phenomenon that the elastic piece 28 is broken, the elastic piece 28 may be made of plastic with better elasticity.

In some embodiments, as shown in FIG. 3, the mounting base 2 is provided with a connecting lug 29, the two opposite side walls of the connecting lug 29 are respectively provided with a rotating shaft 291, and the fastening member 3 is provided with an insertion groove 33 and The shaft hole 34, the connecting lug 29 is inserted into the insertion slot 33, and the shaft 291 is inserted into the shaft hole 34. It can be understood that the engagement of the connecting lug 29 and the insertion groove 33 can better prevent the fastener 3 from moving along the axial direction of the rotating shaft 291, thereby preventing the fastener 3 from falling out of the mounting seat 2. Of course, in other embodiments of the present invention, the connecting lug 29 may be provided on the fastener 3, and the mounting base 2 is provided with an insertion groove 33 and a shaft hole 34.

In some embodiments, the shaft hole 34 is provided with an assembling and disassembling opening that penetrates the fastener 3 along the axial direction of the shaft hole 34. Therefore, when the fastener 3 is installed on the mounting base 2, the user can more easily snap the shaft 291 into the shaft hole 34 from the assembly and disassembly opening, thereby facilitating the user to assemble the fastener 3.

In some embodiments, the mating hole 24 is a non-circular hole. It can be understood that the mating hole 24 being a non-circular hole can prevent relative rotation between the arm 200 and the mounting base 2, thereby raising the risk of the arm 200 being separated from the mounting base 2. It should be noted here that the mating hole 24 can be a square hole, an elliptical hole, or other special-shaped holes. The shape of the mating hole 24 is not specifically limited here, and the shape of the mating hole 24 can be any non-circular shape. .

The specific structure of the spiral protective cover of the two embodiments of the present invention will be described below with reference to FIGS. 1 to 5.

Example 1:

As shown in Figures 1 to 4, the propeller protective cover of this embodiment includes a protective bracket 1, a mounting base 2, and a fastener 3. The mounting base 2 is connected to the protective bracket 1, and the mounting base 2 is provided with a mounting groove for mounting The bottom wall of the slot is provided with a matching hole 24, the arm 200 of the drone is fitted in the installation slot, and a part of the arm 200 extends out of the matching hole 24. The mounting base 2 is provided with a connecting lug 29, the two opposite side walls of the connecting lug 29 are respectively provided with a rotating shaft 291, the buckle 3 is provided with an inserting groove 33 and a rotating shaft hole 34, the connecting lug 29 is inserted in the insert In the slot 33 and the rotating shaft 291 is inserted into the rotating shaft hole 34. The fastening member 3 has a first side wall 31 and a second side wall 32 opposite to each other. The bottom wall of the mounting base 2 is provided with a locking groove 25, and the second side wall 32 is provided with a locking protrusion 321 that cooperates with the locking groove 25. The fastening member 3 has a locking position for locking the arm 200 and a releasing position for releasing the arm 200. In the locked position, the first side wall 31 abuts on the arm 200, and the second side wall 32 abuts on the mounting On the bottom wall of the seat 2, the locking protrusion 321 is fitted in the locking slot 25; in the release position, the locking protrusion 321 is separated from the locking slot 25, and the first side wall 31 is separated from the arm 200. The mounting base 2 is provided with a clamping hole 26, which is suitable for matching with the clamping block 210 on the arm 200, and the clamping hole 26 and the fastener 3 are not on the same side wall.

Example 2:

As shown in Figure 5, the propeller protective cover of this embodiment includes a protective bracket 1, a mounting base 2, and a fastener 3. The mounting base 2 is connected to the protective bracket 1, and the mounting base 2 is provided with a mounting groove, and the bottom of the mounting groove The wall is provided with a matching hole 24, the arm 200 of the drone is fitted in the installation slot, and a part of the arm 200 extends out of the matching hole 24. The fastening member 3 is rotatably arranged on the mounting base 2, and the fastening member 3 has a first side wall 31 and a second side wall 32 oppositely disposed. The bottom wall of the mounting base 2 is provided with a locking groove 25, and the second side wall 32 is provided with a locking protrusion 321 that cooperates with the locking groove 25. The fastening member 3 has a locking position for locking the arm 200 and a releasing position for releasing the arm 200. In the locked position, the first side wall 31 abuts on the arm 200, and the second side wall 32 abuts on the mounting On the bottom wall of the seat 2, the locking protrusion 321 is fitted in the locking slot 25; in the release position, the locking protrusion 321 is separated from the locking slot 25, and the first side wall 31 is separated from the arm 200. The mounting seat 2 has a first wall surface 21 and a second wall surface 22 opposite to each other, and a third wall surface 23 connected to the first wall surface 21 and the second wall surface 22 respectively. The first wall surface 21 is provided with a connecting lug 29. The two opposite side walls are respectively provided with a rotating shaft 291, an inserting groove 33 and a rotating shaft hole 34 are provided on the fastener 3, the connecting lug 29 is inserted into the inserting groove 33 and the rotating shaft 291 is inserted into the rotating shaft hole 34. , The second wall 22 is provided with a notch 27, the side wall of the notch 27 is connected with an elastic piece 28 for clamping the arm 200, the end of the elastic piece 28 away from the side wall of the notch 27 extends into the mounting groove, and the third wall 23 is A clamping hole 26 for clamping the arm 200 is provided.

The propeller assembly of a specific embodiment of the present invention will be described below with reference to FIG. 6.

A propeller assembly includes the aforementioned propeller protective cover, an arm 200, a motor 300, and a propeller 400. The arm 200 is fitted in the installation slot of the propeller protective cover, the motor 300 is connected to the arm 200, and the propeller 400 is connected to the motor 300. The shafts are connected.

In some specific embodiments, a matching slot 220 is provided on the arm 200, and the motor 300 is fitted in the matching slot 220 through the connecting member 500. It is understandable that the motor 300 is fitted in the matching groove 220, which can better prevent the motor 300 from shaking relative to the arm 200, ensure the stability of the connection between the motor 300 and the arm 200, and better avoid the unstable rotation of the propeller 400. The phenomenon occurs. It should be supplemented here that the connecting member 500 may be any one of screws, rivets or pins, and the specific form of the connecting member 500 is not limited herein. Of course, the motor 300 and the arm 200 can also be connected by other connection structures such as buckles.

An unmanned aerial vehicle includes a fuselage and the aforementioned propeller assembly. There are multiple screw assemblies. The arm 200 of each screw assembly is connected to the fuselage, and the propeller protection covers of two adjacent screw assemblies are connected.

Because the unmanned aerial vehicle of the utility model has the aforementioned propeller assembly, the assembly process of the unmanned aerial vehicle is relatively simple, and the production efficiency of the unmanned aerial vehicle is improved. In addition, since the propeller protection covers of the two screw assemblies are connected to protect the multiple propellers 400 of the drone in all directions, the probability of damage to the propellers 400 is reduced.

In the description of this specification, the description with reference to the terms "some embodiments", "other embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiments or examples are included in at least one of the present utility model. In an embodiment or example. In this specification, the schematic representation of the above-mentioned terms does not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner.

The above content is only a preferred embodiment of the present utility model. For those of ordinary skill in the art, according to the idea of the present utility model, there will be changes in the specific implementation and the scope of application, and the content of this specification should not be construed as Restrictions on the utility model.

Claims

A protective cover for a propeller, which is characterized in that it comprises:

Protective bracket (1);

Mounting seat (2), the mounting seat (2) is connected to the protective bracket (1), the mounting seat (2) is provided with a mounting groove, and the bottom wall of the mounting groove is provided with a matching hole (24) ), the arm (200) of the drone is fitted in the mounting slot, and a part of the arm (200) extends out of the matching hole (24);

The fastener (3) is rotatably arranged on the mounting seat (2), and the fastener (3) has a first side wall (31) and a first side wall (31) and a first side wall (31) opposite to each other. Two side walls (32); among them:

One of the second side wall (32) and the bottom wall of the mounting seat (2) is provided with a card slot (25), the second side wall (32) and the mounting seat (2) The other of the bottom walls is provided with a card protrusion (321) that matches with the card slot (25);

The fastener (3) has a locking position for locking the arm (200) and a releasing position for releasing the arm (200). In the locking position, the first side wall (31) ) Abuts on the arm (200), the second side wall (32) abuts on the bottom wall of the mounting seat (2), and the card protrusion (321) is fitted to the card In the groove (25); in the release position, the locking protrusion (321) is separated from the locking groove (25), and the first side wall (31) is separated from the arm (200).
The propeller protective cover according to claim 1, characterized in that, the mounting seat (2) is provided with a clamping hole (26), and the clamping hole (26) is suitable for connecting with the arm (200). The clamping block (210) is matched.
The propeller protective cover according to claim 2, characterized in that the mounting seat (2) has a first wall surface (21) and a second wall surface (22) arranged opposite to each other, and is respectively connected to the first wall surface (21). The third wall surface (23) connected to the second wall surface (22), the fastening member (3) is rotatably arranged on the first wall surface (21), and the locking hole (26) is arranged on the On the third wall (23), the second wall (22) is provided with an elastic piece (28) abutting on the arm (200).
The propeller protective cover according to claim 3, wherein the second wall (22) is provided with a notch (27), and one end of the elastic piece (28) is connected to the side wall of the notch (27) Above, one end of the elastic piece (28) away from the side wall of the notch (27) extends into the installation groove.
The propeller protective cover according to claim 1, characterized in that a connecting ear (29) is provided on the mounting seat (2), and two opposite side walls of the connecting ear (29) are respectively provided with a rotating shaft ( 291), the buckle (3) is provided with an insertion groove (33) and a shaft hole (34), the connecting ear (29) is inserted into the insertion groove (33) and the shaft (291) is inserted into the shaft hole (34).
The propeller protective cover according to claim 5, wherein the shaft hole (34) is provided with an assembly and disassembly opening that penetrates the fastener (3) along the axial direction of the shaft hole (34) .
The propeller protective cover according to claim 1, wherein the matching hole (24) is a non-circular hole.
A propeller assembly, characterized in that it comprises:

The propeller protective cover according to any one of claims 1-7;

An arm (200), the arm (200) is fitted in the installation groove of the propeller protective cover;

A motor (300), the motor (300) is connected to the arm (200);

A propeller (400), the propeller (400) is connected with the rotating shaft of the motor (300).
The propeller assembly according to claim 8, characterized in that, the arm (200) is provided with a matching groove (220), and the motor (300) is fitted to the Fit in the groove (220).
An unmanned aerial vehicle, characterized in that it comprises a fuselage and the propeller assembly according to claim 8, the screw assembly is multiple, and the arm (200) of each screw assembly is connected to the On the fuselage, and the propeller protection covers of two adjacent screw assemblies are connected.