Multi-rotor unmanned aerial vehicle motor with waterproof function

Abstract

The invention discloses a multi-rotor unmanned aerial vehicle motor with a waterproof function, and relates to the technical field of motors. The multi-rotor unmanned aerial vehicle motor with the waterproof function comprises a protective shell, a power source and a bearing assembly, the bearing assembly comprises a threaded column and a bearing supporting plate, the top end of the threaded column is fixedly connected with the edge side of the bottom of the protective shell, the surface of the threaded column is sleeved with the bearing supporting plate through a round hole, and the top of the bearing supporting plate is fixedly connected with a rectangular sealing gasket; a locking nut is fixedly installed on the surface of the threaded column in a threaded mode, an annular conical inclined face is formed in the center of the bottom of the locking nut, a fastening nut is fixedly installed on the bottom of the surface of the threaded column in a threaded mode, a conical elastic piece is fixedly connected to the top of the fastening nut, and a V-shaped notch is formed in the surface of the conical elastic piece. The conical elastic piece is embedded into the V-shaped notch, the waterproof purpose is achieved, water can be prevented, short circuit burnout is not prone to being caused, noise transmission is weakened, transmission is stable, energy is saved, and safety and reliability are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of motors, and in particular to a multi-rotor UAV motor with a waterproof function. Background Art

[0002] In recent years, with the continuous development of science and technology and the rapid progress of society, multi-rotor drones have been vigorously developed and widely used. A multi-rotor drone is a special unmanned helicopter with three or more rotor shafts. A motor is an electromagnetic device that converts electrical energy according to the law of electromagnetic induction. The main function of a motor is to generate driving torque. As a power source for electrical appliances and various machines, the motor's main function is to convert electrical energy into mechanical energy. The motor is one of the key components of a multi-rotor drone. Therefore, the quality of the motor determines the proper operation of a multi-rotor drone.

[0003] At present, traditional multi-rotor drone motors do not have waterproof functions, which makes it easy for the motors to come into contact with external water bodies. As a result, the internal circuits are easily damaged by external water erosion when the motors are working, which reduces the service life of the motors. In severe cases, it can also cause damage between motors, affecting the normal use of the multi-rotor drones. Summary of the Invention

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0005] A multi-rotor UAV motor with waterproof function, comprising:

[0006] A protective housing and a power source installed inside the protective housing, wherein a top cover is fixedly installed on the top of the protective housing, and a blade is fixedly connected to the outer cylindrical surface of the power source output shaft;

[0007] As the power source runs, the output shaft of the power source can drive the blades to rotate. The rotation of the blades can fan the air inside the protective shell, accelerate the flow of gas, and cool the power source, making it less likely to reach high temperature and extending the service life of the power source.

[0008] A bearing assembly, which is used to further install the power source and seal the bottom of the protective shell. The bearing assembly is installed at the bottom of the protective shell;

[0009] The bearing assembly includes a threaded column and a bearing support plate, the top of the threaded column is fixedly connected to the side of the bottom of the protective shell, the bearing support plate is sleeved on the surface of the threaded column through a circular hole, the top of the bearing support plate is fixedly connected with a rectangular sealing gasket, the surface of the threaded column is threadedly fixed with a locking nut, the center of the bottom of the locking nut is provided with an annular conical inclined surface, the bottom of the threaded column surface is threadedly fixed with a fastening nut, the top of the fastening nut is fixedly connected with a conical elastic sheet, the surface of the conical elastic sheet is provided with a V-shaped notch, the conical The elastic sheet is embedded in the inside of the V-shaped notch, and the bearing support plate is sleeved on the surface of the threaded column through the circular hole, and the locking nut is first matched with the thread of the threaded column to preliminarily fix the bearing support plate, and then the fastening nut is matched with the thread of the threaded column to tighten it again, so that the bearing support plate can be fixed, and the bottom of the protective shell is sealed. The rectangular sealing gasket is squeezed to seal, and the top cover is installed on the top of the protective shell, so that the power source is in a closed space, and external water is inconvenient to enter the interior. It has a waterproof function, so that the power source is not easily damaged.

[0010] Preferably, the top cover is installed directly above the protective shell, the output shaft of the power source passes through the inner wall of the protective shell and extends to the outside thereof, the blades are arc-shaped, there are three blades, and the three blades are evenly distributed on the outer circular surface of the power source output shaft.

[0011] The locking nut and the fastening nut are threadedly installed with the threaded column, so that the conical elastic sheet is embedded in the inside of the annular conical inclined surface, and under the extrusion of the fastening nut, a V-shaped notch is opened on the surface of the conical elastic sheet, so that the conical elastic sheet is elastically deformed after being subjected to the extrusion force, so that the conical elastic sheet exerts an elastic pushing force on the locking nut, thereby achieving self-locking, thereby preventing the locking nut from loosening easily.

[0012] Preferably, the threaded columns are installed vertically, there are four threaded columns, and the four threaded columns are evenly distributed on the sides of the bottom of the protective shell, and the bearing tray is installed directly below the protective shell.

[0013] The supporting plate is fixed by locking nuts and fastening nuts, and the power source is installed on the supporting plate, so that the supporting plate can stably support the power source, so that it is not easy to shake when not in operation, thereby making the overall operation of the power source stable.

[0014] Preferably, the rectangular sealing gasket is made of rubber, the fastening nut is installed directly below the locking nut, the surface of the conical elastic sheet fits the inner side of the V-shaped notch, and the V-shaped notch is evenly distributed on the surface of the conical elastic sheet.

[0015] Preferably, the inner cavity of the protective shell is installed with a noise reduction component, and the noise reduction component is installed in a surrounding manner on the surface of the power source, the noise reduction component includes a rectangular sound insulation frame, the outer side surface of the rectangular sound insulation frame is fixedly connected to the inner side surface of the protective shell, and the power source is installed in the middle of the rectangular sound insulation frame, the inner wall of the rectangular sound insulation frame is fixedly connected with a long trapezoidal opening plate, the inner wall of the long trapezoidal opening plate is fixedly connected with a long V-shaped plate, the surface of the long V-shaped plate is provided with a rectangular hole, and the inner wall of the long trapezoidal opening plate is fixedly connected with a first curled piece, The second curled sheet is fixedly connected to the inner wall of the long trapezoidal opening plate and on the side away from the first curled sheet. When the power source is running, the noise generated by the power source is transmitted, and the noise can be used to contact the long trapezoidal opening plate and the long V-shaped plate to reflect the noise, change the noise propagation path, and reduce the propagation of noise. In addition, the long trapezoidal opening plates are evenly distributed on the inner side of the rectangular sound insulation frame, and the openings of the long trapezoidal opening plates are facing the center of the rectangular sound insulation frame, so that the evenly distributed long trapezoidal opening plates can increase the receiving area of the noise and reflect it.

[0016] Preferably, the elongated trapezoidal opening plates are evenly distributed on the inner side of the rectangular sound insulation frame, and the openings of the elongated trapezoidal opening plates face the center of the rectangular sound insulation frame. The elongated trapezoidal opening plates and the elongated V-shaped plates are both installed vertically.

[0017] The noise penetrates into the space formed by the long trapezoidal opening plate and the long V-shaped plate from the rectangular hole, and the first curled sheet and the second curled sheet are both curled surfaces, so the noise can be guided so that the noise is curled and propagates toward the inside of the first curled sheet and the inside of the second curled sheet, thereby weakening the propagation energy of the noise. The rectangular sound insulation frame is covered on the outside of the power source to absorb sound again.

[0018] Preferably, the rectangular holes are evenly opened on the surface of the long V-shaped plate, and the curling directions of the first curling sheet and the second curling sheet are opposite.

[0019] Preferably, a connecting module is installed on the surface of the power source output shaft, and the connecting module includes an I-shaped connecting shaft and a support leg. The I-shaped connecting shaft is fixedly installed with the end face of the power source output shaft by a screw, and the outer cylindrical surface of the I-shaped connecting shaft and the outer cylindrical surface of the power source output shaft are both provided with a circular guide groove. The top of the support leg is fixedly connected with a semicircular clamping sleeve, and a ball is rollingly installed on the inner side of the semicircular clamping sleeve. The ball and the circular guide groove are installed at the same height. The side of the surface of the semicircular clamping sleeve is fixedly connected with a connecting block, and two relative The semicircular ferrule is clamped on the outer cylindrical surface of the I-shaped connecting shaft and the outer cylindrical surface of the power source output shaft, and under the fixation of the screw, the I-shaped connecting shaft and the output shaft of the power source can be connected, which is convenient for transmitting kinetic energy. By utilizing the fit between the ball and the inner surface of the circular guide groove, the output shaft of the power source drives the I-shaped connecting shaft to rotate, and the ball rolls, adopting rolling friction to reduce friction resistance, so that the output shaft of the power source drives the I-shaped connecting shaft to rotate smoothly, and it is not easy to get stuck, thereby reducing the loss of electric energy and achieving the effect of energy saving.

[0020] Preferably, the I-shaped connecting shaft and the output shaft of the power source are installed at the same height, there are two semicircular ferrules, and the two semicircular ferrules are symmetrically installed along the central axis in the middle of the I-shaped connecting shaft.

[0021] Preferably, the balls are evenly distributed on the inner side of the semicircular ferrule, the spherical surface outside the balls fits with the inner side of the circular guide groove, there are four connecting blocks, and the four connecting blocks are evenly distributed on the surface of the semicircular ferrule.

[0022] The present invention provides a waterproof multi-rotor UAV motor. It has the following beneficial effects:

[0023] 1. The multi-rotor UAV motor with waterproof function is installed on the surface of the threaded column through the round hole of the carrying bracket, and the locking nut is first matched with the thread of the threaded column to preliminarily fix the carrying bracket, and then the fastening nut is matched with the thread of the threaded column to tighten it again, so that the carrying bracket can be fixed, the bottom of the protective shell is sealed, and the rectangular sealing gasket is squeezed to seal it, and the top cover is installed on the top of the protective shell, so that the power source is in a closed space, and external water is inconvenient to enter the interior. It has a waterproof function and makes the power source not easily damaged.

[0024] 2. The waterproof multi-rotor drone motor is threadedly installed with a locking nut and a fastening nut on a threaded column, so that the conical elastic sheet is embedded in the interior of the annular conical inclined surface. Under the extrusion of the fastening nut, a V-shaped notch is provided on the surface of the conical elastic sheet, so that the conical elastic sheet is elastically deformed after being subjected to the extrusion force, so that the conical elastic sheet exerts an elastic pushing force on the locking nut, thereby performing self-locking, thereby preventing the locking nut from loosening.

[0025] 3. The waterproof multi-rotor drone motor is fixed to the supporting plate by locking nuts and fastening nuts, and is installed on the supporting plate in combination with the power source, so that the supporting plate can stably support the power source, so that it is not easy to shake when not in operation, thereby making the overall operation of the power source stable.

[0026] Fourth, the multi-rotor drone motor with waterproof function utilizes the contact between noise and the long trapezoidal opening plate and the long V-shaped plate to reflect the noise, change the noise propagation path, and reduce the spread of noise. In addition, the long trapezoidal opening plates are evenly distributed on the inner side of the rectangular sound insulation frame, and the openings of the long trapezoidal opening plates are facing the center of the rectangular sound insulation frame. The evenly distributed long trapezoidal opening plates can increase the receiving area of the noise and reflect it.

[0027] 5. The noise of the waterproof multi-rotor drone motor penetrates from the rectangular hole into the space formed by the long trapezoidal opening plate and the long V-shaped plate. The first curled sheet and the second curled sheet are both curled surfaces, which can guide the noise so that the noise is curled and propagates toward the inside of the first curled sheet and the inside of the second curled sheet, thereby weakening the propagation energy of the noise. The rectangular sound insulation frame is covered on the outside of the power source to absorb sound again and reduce the spread of noise.

[0028] 6. The waterproof multi-rotor UAV motor uses a semicircular ferrule to be clamped on the I-shaped connecting shaft and the output shaft of the power source, and under the fixation of the screw, the I-shaped connecting shaft can be connected to the output shaft of the power source, which is convenient for transmitting kinetic energy. By using the ball bearings to fit the inner side of the circular guide groove, when the output shaft of the power source drives the I-shaped connecting shaft to rotate, the balls roll, and rolling friction is used to reduce frictional resistance, so that the output shaft of the power source drives the I-shaped connecting shaft to rotate smoothly, and it is not easy to get stuck, thereby reducing the loss of electric energy and achieving an energy-saving effect.

[0029] 7. The waterproof multi-rotor drone motor, as the power source is running, enables the output shaft of the power source to drive the blades to rotate. The rotation of the blades can fan the air inside the protective shell, accelerate the flow of gas, and cool the power source, making it less likely to reach high temperature and extending the service life of the power source. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the overall structure of the multi-rotor UAV motor with waterproof function of the present invention;

[0031] Figure 2 This is a schematic diagram of the disassembled structure of the multi-rotor UAV motor with waterproof function of the present invention;

[0032] Figure 3 This is a schematic diagram of the connection structure between the load-bearing component and the protective housing of the present invention;

[0033] Figure 4 This is a schematic diagram of the overall disassembly structure of the load-bearing assembly of the present invention;

[0034] Figure 5 This is a schematic diagram of the overall structure of the load-bearing assembly of the present invention;

[0035] Figure 6 This is a schematic diagram of the connection structure between the protective shells of the noise reduction component of the present invention;

[0036] Figure 7 For the present invention Figure 6 A partial enlarged view of the middle part;

[0037] Figure 8 It is a schematic diagram of the overall structure of the connection module of the present invention.

[0038] In the figure: 1. Protective shell; 2. Power source; 3. Top cover; 4. Blade; 5. Load-bearing assembly; 6. Noise reduction assembly; 7. Connection module; 51. Threaded column; 52. Load-bearing support plate; 53. Rectangular sealing gasket; 54. Locking nut; 55. Annular conical slope; 56. Fastening nut; 57. Conical elastic sheet; 58. V-shaped notch; 61. Rectangular sound insulation frame; 62. Long trapezoidal opening plate; 63. Long V-shaped plate; 64. Rectangular hole; 65. First curled sheet; 66. Second curled sheet; 71. I-shaped connecting shaft; 72. Support leg; 73. Circular guide groove; 74. Semicircular ferrule; 75. Ball; 76. Connection block. DETAILED DESCRIPTION

[0039] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0040] The first embodiment, as Figures 1 to 5 As shown, the present invention provides a technical solution:

[0041] A multi-rotor UAV motor with waterproof function, comprising:

[0042] A protective housing 1 and a power source 2 installed inside the protective housing 1. A top cover 3 is fixedly installed on the top of the protective housing 1. A blade 4 is fixedly connected to the outer cylindrical surface of the output shaft of the power source 2.

[0043] As the power source 2 runs, the output shaft of the power source 2 can drive the blades 4 to rotate. The rotation of the blades 4 can fan the air inside the protective shell 1, accelerate the flow of gas, and cool the power source 2, making it less likely for the power source 2 to reach high temperature, thereby extending the service life of the power source 2.

[0044] The top cover 3 is installed directly above the protective shell 1. The output shaft of the power source 2 passes through the inner wall of the protective shell 1 and extends to the outside. The blades 4 are arc-shaped. There are three blades 4, and the three blades 4 are evenly distributed on the outer circular surface of the output shaft of the power source 2.

[0045] The bearing assembly 5 is used to continue to install the power source 2 and seal the bottom of the protective housing 1. The bearing assembly 5 is installed at the bottom of the protective housing 1;

[0046] Among them, the bearing assembly 5 includes a threaded column 51 and a bearing support plate 52. The top of the threaded column 51 is fixedly connected to the side of the bottom of the protective shell 1. The bearing support plate 52 is sleeved on the surface of the threaded column 51 through a circular hole. The top of the bearing support plate 52 is fixedly connected with a rectangular sealing gasket 53. The surface of the threaded column 51 is threadedly fixed with a locking nut 54. The center of the bottom of the locking nut 54 is provided with an annular conical inclined surface 55. The bottom of the surface of the threaded column 51 is threadedly fixed with a fastening nut 56. The top of the fastening nut 56 is fixedly connected with a conical elastic sheet 57. The surface of the conical elastic sheet 57 is provided with a V-shaped notch 58. The conical elastic sheet 57 Embedded into the inside of the V-shaped notch 58, the supporting plate 52 is sleeved on the surface of the threaded column 51 through the circular hole, and the locking nut 54 is first threadedly engaged with the threaded column 51 to preliminarily fix the supporting plate 52, and then the fastening nut 56 is threadedly engaged with the threaded column 51 to tighten it again, so that the supporting plate 52 can be fixed, the bottom of the protective shell 1 is sealed, and the rectangular sealing gasket 53 is squeezed to seal, and the top cover 3 is installed on the top of the protective shell 1, so that the power source 2 is in a closed space, and external water is inconvenient to enter the interior, with a waterproof function, so that the power source 2 is not easily damaged.

[0047] The threaded columns 51 are installed vertically. There are four threaded columns 51 , and the four threaded columns 51 are evenly distributed on the sides of the bottom of the protective shell 1 . The supporting plate 52 is installed directly below the protective shell 1 .

[0048] The locking nut 54 and the fastening nut 56 are threadedly installed with the threaded column 51, so that the conical elastic piece 57 is embedded in the interior of the annular conical inclined surface 55, and under the extrusion of the fastening nut 56, a V-shaped notch 58 is opened on the surface of the conical elastic piece 57 to facilitate the conical elastic piece 57 to further elastically deform after being subjected to the extrusion force, so that the conical elastic piece 57 exerts an elastic pushing force on the locking nut 54, so that it can be self-locking and the locking nut 54 is not easy to loosen.

[0049] The rectangular sealing gasket 53 is made of rubber, and the fastening nut 56 is installed just below the locking nut 54. The surface of the conical elastic sheet 57 fits the inner side of the V-shaped notch 58, and the V-shaped notch 58 is evenly distributed on the surface of the conical elastic sheet 57. The supporting plate 52 is fixed by the locking nut 54 and the fastening nut 56, and is installed on the supporting plate 52 in combination with the power source 2, so that the supporting plate 52 can stably support the power source 2, so that the power source 2 can operate stably as a whole when it is not in operation.

[0050] The second embodiment, based on the first embodiment, see Figures 1 to 7 As shown:

[0051] The inner cavity of the protective shell 1 is equipped with a noise reduction component 6, and the noise reduction component 6 is installed in a surrounding manner on the surface of the power source 2. The noise reduction component 6 includes a rectangular sound insulation frame 61. The outer side of the rectangular sound insulation frame 61 is fixedly connected to the inner side of the protective shell 1, and the power source 2 is installed in the middle of the rectangular sound insulation frame 61. The inner wall of the rectangular sound insulation frame 61 is fixedly connected with a long trapezoidal opening plate 62. The inner wall of the long trapezoidal opening plate 62 is fixedly connected with a long V-shaped plate 63. The surface of the long V-shaped plate 63 is provided with a rectangular hole 64. The inner wall of the long trapezoidal opening plate 62 is fixedly connected with a first curling piece 65. A second curled piece 66 is fixedly connected to the inner wall of the opening plate 62 and on one side away from the first curled piece 65. When the power source 2 is running, the noise generated by the power source 2 is transmitted, and the noise can be used to contact the long trapezoidal opening plate 62 and the long V-shaped plate 63 to reflect the noise, change the noise propagation path, and reduce the propagation of the noise. In addition, the long trapezoidal opening plates 62 are evenly distributed on the inner side of the rectangular sound insulation frame 61, and the openings of the long trapezoidal opening plates 62 are facing the center of the rectangular sound insulation frame 61, so that the evenly distributed long trapezoidal opening plates 62 can increase the receiving area of the noise and reflect it.

[0052] The long trapezoidal opening plates 62 are evenly distributed on the inner side of the rectangular sound insulation frame 61 , and the openings of the long trapezoidal opening plates 62 face the center of the rectangular sound insulation frame 61 . The long trapezoidal opening plates 62 and the long V-shaped plates 63 are both installed vertically.

[0053] The noise penetrates into the space formed by the long trapezoidal opening plate 62 and the long V-shaped plate 63 from the rectangular hole 64, and the first curled sheet 65 and the second curled sheet 66 are both curled surfaces, so the noise can be guided so that the noise is curled and propagates toward the inside of the first curled sheet 65 and the inside of the second curled sheet 66, thereby weakening the propagation energy of the noise, and the rectangular sound insulation frame 61 covers the outside of the power source 2 to absorb sound again.

[0054] The rectangular holes 64 are evenly formed on the surface of the long V-shaped plate 63 , and the first curling piece 65 and the second curling piece 66 are curled in opposite directions.

[0055] The third embodiment, based on the first and second embodiments, see Figures 1 to 8 As shown:

[0056] The surface of the output shaft of the power source 2 is installed with a connecting module 7, which includes an I-shaped connecting shaft 71 and a supporting leg 72. The I-shaped connecting shaft 71 is fixed to the end face of the output shaft of the power source 2 by screws. The outer cylindrical surface of the I-shaped connecting shaft 71 and the outer cylindrical surface of the output shaft of the power source 2 are both provided with a circular guide groove 73. The top of the supporting leg 72 is fixedly connected to a semicircular clamping sleeve 74. The inner side of the semicircular clamping sleeve 74 is rollingly installed with a ball 75. The ball 75 and the circular guide groove 73 are installed at the same height. The side of the surface of the semicircular clamping sleeve 74 is fixedly connected to a connecting block 76. By clamping two symmetrical semicircular sleeves 74 on the outer cylindrical surface of the I-shaped connecting shaft 71 and the outer cylindrical surface of the output shaft of the power source 2, and fixing them with screws, the I-shaped connecting shaft 71 can be connected to the output shaft of the power source 2, which is convenient for transmitting kinetic energy. By making use of the balls 75 and the inner surface of the circular guide groove 73, when the output shaft of the power source 2 drives the I-shaped connecting shaft 71 to rotate, the balls 75 can roll, and rolling friction is used to reduce frictional resistance, so that the output shaft of the power source 2 drives the I-shaped connecting shaft 71 to rotate smoothly without getting stuck.

[0057] The I-shaped connecting shaft 71 and the output shaft of the power source 2 are installed at the same height. There are two semicircular ferrules 74 , and the two semicircular ferrules 74 are symmetrically installed along the central axis in the middle of the I-shaped connecting shaft 71 .

[0058] The balls 75 are evenly distributed on the inner side of the semicircular sleeve 74 , and the spherical surface outside the balls 75 fits with the inner side of the circular guide groove 73 . There are four connecting blocks 76 , and the four connecting blocks 76 are evenly distributed on the surface of the semicircular sleeve 74 .

[0059] When in use, first install the protective shell 1 to the designated position of the multi-rotor drone through the support base at the bottom, and install the power source 2 inside the protective shell 1, and fix the bottom of the power source 2 to the supporting plate 52;

[0060] At this time, the supporting plate 52 is sleeved on the surface of the threaded column 51 through the circular hole, and the locking nut 54 is first threadedly engaged with the threaded column 51 to preliminarily fix the supporting plate 52, and then the fastening nut 56 is threadedly engaged with the threaded column 51 to tighten it again, so that the supporting plate 52 can be fixed, the bottom of the protective shell 1 is blocked, and the rectangular sealing gasket 53 is squeezed to seal it, and the top cover 3 is installed on the top of the protective shell 1, so that the power source 2 is in a closed space, and external water is inconvenient to enter the interior, which has a waterproof function and makes the power source 2 not easily damaged;

[0061] At the same time, the locking nut 54 and the fastening nut 56 are threadedly installed with the threaded column 51, so that the conical elastic piece 57 is embedded in the inner part of the annular conical inclined surface 55. Under the pressure of the fastening nut 56, a V-shaped notch 58 is formed on the surface of the conical elastic piece 57. This facilitates the conical elastic piece 57 to elastically deform under the pressure, so that the conical elastic piece 57 exerts an elastic pushing force on the locking nut 54, thereby achieving self-locking and preventing the locking nut 54 from loosening.

[0062] And by clamping two symmetrical semicircular clamping sleeves 74 on the outer cylindrical surface of the I-shaped connecting shaft 71 and the outer cylindrical surface of the output shaft of the power source 2, and fixing them with screws, the I-shaped connecting shaft 71 can be connected to the output shaft of the power source 2, which is convenient for transmitting kinetic energy. Moreover, by fitting the balls 75 with the inner surface of the circular guide groove 73, when the output shaft of the power source 2 drives the I-shaped connecting shaft 71 to rotate, the balls 75 roll, and rolling friction is used to reduce friction resistance, so that the output shaft of the power source 2 drives the I-shaped connecting shaft 71 to rotate smoothly without being easily stuck.

[0063] The support plate 52 is fixed by the locking nut 54 and the fastening nut 56, and the power source 2 is installed on the support plate 52, so that the support plate 52 can stably support the power source 2, so that when it is not in operation, the power source 2 can be stably operated as a whole.

[0064] Moreover, as the power source 2 is running, the noise generated by the power source 2 is propagated, and the noise can be reflected by contacting the long trapezoidal opening plate 62 and the long V-shaped plate 63, thereby changing the noise propagation path and reducing the propagation of the noise. In addition, the long trapezoidal opening plates 62 are evenly distributed on the inner side surface of the rectangular sound insulation frame 61, and the openings of the long trapezoidal opening plates 62 are oriented toward the center of the rectangular sound insulation frame 61. The evenly distributed long trapezoidal opening plates 62 can increase the receiving area of the noise and reflect it.

[0065] The noise penetrates into the space formed by the long trapezoidal opening plate 62 and the long V-shaped plate 63 from the rectangular hole 64, and the first curled sheet 65 and the second curled sheet 66 are both curled surfaces, so the noise can be guided so that the noise is curled and propagates toward the inside of the first curled sheet 65 and the inside of the second curled sheet 66, thereby weakening the propagation energy of the noise, and the rectangular sound insulation frame 61 covers the outside of the power source 2 to absorb sound again.

[0066] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a..." does not exclude the presence of additional identical elements in the process, method, article, or device comprising the element.

[0067] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A multi-rotor UAV motor with waterproof function, characterized in that: include: A protective housing (1), and a power source (2) installed inside the protective housing (1), a top cover (3) being fixedly installed on the top of the protective housing (1), and a blade (4) being fixedly connected to the outer circumferential surface of the output shaft of the power source (2); A bearing assembly (5), the bearing assembly (5) is used to continue installing the power source (2) and to seal the bottom of the protective housing (1), and the bearing assembly (5) is installed at the bottom of the protective housing (1); The bearing assembly (5) comprises a threaded column (51) and a bearing support plate (52), the top of the threaded column (51) is fixedly connected to the side of the bottom of the protective shell (1), the bearing support plate (52) is sleeved on the surface of the threaded column (51) through a circular hole, the top of the bearing support plate (52) is fixedly connected with a rectangular sealing gasket (53), the surface of the threaded column (51) is threadedly fixed with a locking nut (54), the center of the bottom of the locking nut (54) is provided with an annular conical inclined surface (55), the bottom of the surface of the threaded column (51) is threadedly fixed with a fastening nut (56), the top of the fastening nut (56) is fixedly connected with a conical elastic sheet (57), the surface of the conical elastic sheet (57) is provided with a V-shaped notch (58), and the conical elastic sheet (57) is embedded in the inside of the V-shaped notch (58).

2. The waterproof multi-rotor UAV motor according to claim 1, characterized in that: The top cover (3) is installed directly above the protective housing (1); the output shaft of the power source (2) passes through the inner wall of the protective housing (1) and extends to the outside thereof; the blades (4) are arc-shaped; there are three blades (4), and the three blades (4) are evenly distributed on the outer circumferential surface of the output shaft of the power source (2).

3. The waterproof multi-rotor UAV motor according to claim 1, characterized in that: The threaded columns (51) are installed vertically, there are four threaded columns (51), and the four threaded columns (51) are evenly distributed on the sides of the bottom of the protective shell (1), and the supporting plate (52) is installed directly below the protective shell (1).

4. The waterproof multi-rotor UAV motor according to claim 1, characterized in that: The rectangular sealing gasket (53) is made of rubber. The fastening nut (56) is installed directly below the locking nut (54). The surface of the conical elastic sheet (57) fits the inner side of the V-shaped notch (58). The V-shaped notches (58) are evenly distributed on the surface of the conical elastic sheet (57).

5. The waterproof multi-rotor UAV motor according to claim 1, characterized in that: The inner cavity of the protective shell (1) is installed with a noise reduction component (6), and the noise reduction component (6) is installed in a surrounding manner on the surface of the power source (2), the noise reduction component (6) includes a rectangular sound insulation frame (61), the outer side surface of the rectangular sound insulation frame (61) is fixedly connected to the inner side surface of the protective shell (1), and the power source (2) is installed in the middle of the rectangular sound insulation frame (61), the inner wall of the rectangular sound insulation frame (61) is fixedly connected with a long trapezoidal opening plate (62), the inner wall of the long trapezoidal opening plate (62) is fixedly connected with a long V-shaped plate (63), the surface of the long V-shaped plate (63) is provided with a rectangular hole (64), the inner wall of the long trapezoidal opening plate (62) is fixedly connected with a first curling piece (65), and the inner wall of the long trapezoidal opening plate (62) and the side away from the first curling piece (65) is fixedly connected with a second curling piece (66).

6. The waterproof multi-rotor UAV motor according to claim 5, characterized in that: The long trapezoidal opening plates (62) are evenly distributed on the inner side of the rectangular sound insulation frame (61), and the openings of the long trapezoidal opening plates (62) are oriented toward the center of the rectangular sound insulation frame (61). The long trapezoidal opening plates (62) and the long V-shaped plates (63) are both installed vertically.

7. The waterproof multi-rotor UAV motor according to claim 5, characterized in that: The rectangular holes (64) are evenly opened on the surface of the long V-shaped plate (63), and the curling directions of the first curling piece (65) and the second curling piece (66) are opposite.

8. The waterproof multi-rotor UAV motor according to claim 1, characterized in that: A connection module (7) is installed on the surface of the output shaft of the power source (2), and the connection module (7) includes an I-shaped connection shaft (71) and a support leg (72). The I-shaped connection shaft (71) is fixedly installed with the end face of the output shaft of the power source (2) by means of screws. The outer cylindrical surface of the I-shaped connection shaft (71) and the outer cylindrical surface of the output shaft of the power source (2) are both provided with a circular guide groove (73). The top end of the support leg (72) is fixedly connected with a semicircular clamping sleeve (74). The inner side surface of the semicircular clamping sleeve (74) is rollingly installed with a ball (75). The ball (75) and the circular guide groove (73) are installed at the same height. A connection block (76) is fixedly connected to the side of the surface of the semicircular clamping sleeve (74).

9. The waterproof multi-rotor UAV motor according to claim 8, characterized in that: The I-shaped connecting shaft (71) and the output shaft of the power source (2) are installed at the same height, and there are two semicircular clamping sleeves (74), and the two semicircular clamping sleeves (74) are symmetrically installed along the central axis in the middle of the I-shaped connecting shaft (71).

10. The waterproof multi-rotor UAV motor according to claim 8, characterized in that: The balls (75) are evenly distributed on the inner side of the semicircular sleeve (74), the spherical surface outside the balls (75) fits with the inner side of the circular guide groove (73), and there are four connecting blocks (76), and the four connecting blocks (76) are evenly distributed on the surface of the semicircular sleeve (74).

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