PCB motor end cover structure of unmanned aerial vehicle

Abstract

The utility model relates to the technical field of permanent magnet synchronous motors of unmanned aerial vehicles, and discloses an unmanned aerial vehicle PCB motor end cover structure which comprises a cover. The ventilation groove is formed in the top of the cover; the hole is formed in the cover; a hole is formed in the cover, the heat dissipation mechanism is arranged in the hole, a filter screen is arranged at the bottom of the cover, the heat dissipation mechanism comprises a connecting rod, a bearing, a rotating rod and fan blades, and the fan blades are fixedly installed at the top of the rotating rod and located in the hole; according to the utility model, the holes and the filter screen are arranged to increase the circulation of heat flow, the filter screen can prevent dust from entering the motor, and when wind blows into the holes, the fan blades are driven to rotate, so that the heat dissipation efficiency of the PCB disc type permanent magnet synchronous motor is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of permanent magnet synchronous motors for drones, and specifically to a PCB motor end cover structure for drones. Background Art

[0002] Drones have significant applications in fields such as aerial photography, agriculture, plant protection, micro selfies, express delivery, disaster relief, observing wild animals, monitoring infectious diseases, surveying and mapping, news reporting, power line inspection, disaster relief, film and television shooting, creating romance, etc. Each country is actively expanding industry applications and developing drone technology. The drive motors of drones must have characteristics such as small volume and weight, and high power density. In the design and practical application of PCB disc permanent magnet synchronous motors for drones, their power density is often limited by their electromagnetic load. The reason is that drones are often used in the air, and the wind will affect the electromagnetic load of the PCB disc permanent magnet synchronous motor.

[0003] For example, the Chinese patent publication number is CN213521481U, and the technical solution disclosed in this patent document is as follows: An end cover structure of a drone PCB motor, the cover is a circular ring structure, there is a circular plate inside the cover, the circular plate is fixedly connected to the inner wall of the cover through several connecting plates, an arc-shaped groove structure is formed between two adjacent connecting plates and the inner wall of the cover, a second wind shielding mechanism is installed at the bottom end of the cover, a first wind shielding mechanism is installed on the top surface of the circular plate, and several rectangular through grooves are also equidistantly arranged on the side wall of the cover.

[0004] The above-mentioned prior art uses the first wind shielding mechanism and the second wind shielding mechanism to guide the wind direction, so that most of the wind will not blow onto the cover, and thus will not overly affect the electromagnetic load of the PCB disc permanent magnet synchronous motor installed with an end cover structure of a drone PCB motor. However, the setting of the arc-shaped groove structure and the rectangular through grooves makes the fluidity of the heat flow poor, reducing the heat dissipation efficiency of the PCB disc permanent magnet synchronous motor. Content of the Utility Model

[0005] (1) Technical Problems to be Solved

[0006] In view of the deficiencies of the prior art, the utility model provides a PCB motor end cover structure for drones.

[0007] (2) Technical Solutions

[0008] To achieve the above object, the utility model provides the following technical solution: A PCB motor end cover structure for drones, including a cover; a ventilation groove provided on the top of the cover; holes provided on the cover; and a heat dissipation mechanism provided inside the holes. A filter screen is provided at the bottom of the cover. The heat dissipation mechanism includes a connecting rod, a bearing, a rotating rod, and fan blades. The fan blades are fixedly installed at the top of the rotating rod and are located inside the holes.

[0009] Preferably, the connecting rod is fixedly installed inside the hole, and the bearing is fixedly installed at the end of the connecting rod, and the bottom of the rotating rod is fixedly connected to the inner ring of the bearing. By setting the bearing, the fan blades can rotate stably inside the hole.

[0010] Preferably, a circular groove is provided at the bottom of the cover, and the filter is movably connected inside the circular groove, and the circular groove is provided for embedding the filter.

[0011] Preferably, a notch is provided at the bottom of the cover, a fixing groove is provided on the outer wall of the filter screen, and one end of a clamping rod is inserted into the fixing groove. The fixing groove and the clamping rod are provided to fix the filter screen to the bottom of the cover.

[0012] Preferably, a slide groove is provided on one side of the inner wall of the notch, the other end of the clamping rod is slidably connected to the inside of the slide groove, and a shift block is fixedly connected to the bottom of the clamping rod, and the clamping rod can be driven to move by setting the shift block.

[0013] Preferably, a spring is provided inside the slide groove, and two ends of the spring are respectively fixedly connected to an end of the inner wall of the slide groove away from the opening and an end of the clamping rod located inside the slide groove, and the clamping rod can be driven to reset by providing the spring.

[0014] (III) Beneficial effects

[0015] Compared with the prior art, the utility model provides a UAV PCB motor end cover structure, which has the following beneficial effects:

[0016] 1. This UAV PCB motor end cover structure increases the fluidity of heat flow by setting holes and filters. The filters can prevent dust from entering the motor. When wind blows into the holes, it will drive the fan blades to rotate, thereby improving the heat dissipation efficiency of the PCB disc permanent magnet synchronous motor.

[0017] 2. The PCB motor end cover structure of the drone can be removed from the cover to clean the dust by toggling the toggle block, which drives one end of the clamping rod to disengage from the fixed groove, so that the filter is released from restriction. The filter can be removed from the cover to clean the dust, and the operation is simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] Figure 2 This is a cross-sectional view of the utility model;

[0021] Figure 3This is an enlarged view of the present utility model A.

[0022] In the figure: 1, lid; 2, ventilation groove; 3, hole; 4, filter screen; 5, heat dissipation mechanism; 51, connecting rod; 52, bearing; 53, rotating rod; 54, fan blade; 6, fixing groove; 7, notch; 8, clamping rod; 9, sliding groove; 10, spring; 11, shifting block. Specific embodiments

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0024] Embodiment 1

[0025] As Figures 1-3 shown, the present utility model provides a UAV PCB motor end cover structure, including a lid 1; a ventilation groove 2 provided on the top of the lid 1; a hole 3 provided on the lid 1; and a heat dissipation mechanism 5 provided inside the hole 3. A filter screen 4 is provided at the bottom of the lid 1. The heat dissipation mechanism 5 includes a connecting rod 51, a bearing 52, a rotating rod 53, and a fan blade 54. The fan blade 54 is fixedly installed at the top of the rotating rod 53 and is located inside the hole 3. The connecting rod 51 is fixedly installed inside the hole 3, and the bearing 52 is fixedly installed at the end of the connecting rod 51. The bottom of the rotating rod 53 is fixedly connected to the inner ring of the bearing 52. By providing the bearing 52, the fan blade 54 can rotate stably inside the hole 3. A circular groove is provided at the bottom of the lid 1, and the filter screen 4 is movably connected inside the circular groove. By providing the circular groove, the filter screen 4 can be embedded and installed.

[0026] In this embodiment, the installation of a wind shielding mechanism on the top of the lid 1 is prior art mentioned in the background art and is not drawn. By providing the hole 3 and the filter screen 4, the fluidity of the heat flow is increased. The filter screen 4 can prevent dust from entering the motor interior. When the wind blows into the hole 3, it will drive the fan blade 54 to rotate, thereby improving the heat dissipation efficiency of the PCB disc permanent magnet synchronous motor.

[0027] Embodiment 2

[0028] As Figures 1-3As shown, on the basis of Example 1, the utility model provides a technical solution: preferably, a notch 7 is provided at the bottom of the cover 1, a fixing groove 6 is provided on the outer wall of the filter screen 4, and one end of a clamping rod 8 is inserted into the fixing groove 6. The fixing groove 6 and the clamping rod 8 are provided to fix the filter screen 4 at the bottom of the cover 1. A slide groove 9 is provided on one side of the inner wall of the notch 7. The other end of the clamping rod 8 is slidably connected to the inside of the slide groove 9. A shift block 11 is fixedly connected to the bottom of the clamping rod 8. The shift block 11 can be provided to drive the clamping rod 8 to move. A spring 10 is provided inside the slide groove 9. The two ends of the spring 10 are respectively fixedly connected to an end of the inner wall of the slide groove 9 away from the opening and an end of the clamping rod 8 located inside the slide groove 9. The spring 10 can be provided to drive the clamping rod 8 to reset.

[0029] In this embodiment, by shifting the shift block 11, the shift block 11 drives one end of the clamping rod 8 to disengage from the fixing groove 6, so that the filter 4 is released from the restriction and can be removed from the cover 1 for dust cleaning, which is simple and convenient to operate.

[0030] The following is a detailed description of the working principle of the UAV PCB motor end cover structure.

[0031] like Figures 1-3 As shown, when in use, the heat flow is increased by setting the hole 3 and the filter 4, the filter 4 can prevent dust from entering the inside of the motor, and when the wind blows into the hole 3, it will drive the fan blades 54 to rotate, thereby improving the heat dissipation efficiency of the PCB disc permanent magnet synchronous motor; by turning the dial block 11, the dial block 11 drives one end of the clamping rod 8 to disengage from the fixing groove 6, so that the filter 4 is released from the restriction, and it can be removed from the cover 1 for dust cleaning, which is simple and convenient to operate; the above is the working process of the entire device, and the contents not described in detail in this specification belong to the existing technology known to professional and technical personnel in this field.

Claims

1. A structure of the PCB motor end cover for a drone, comprising a cover (1); A ventilation groove (2) provided at the top of the cover (1); A hole (3) provided on the cover (1); And a heat dissipation mechanism (5) provided inside the hole (3), characterized in that: a filter screen (4) is provided at the bottom of the cover (1), and the heat dissipation mechanism (5) includes a connecting rod (51), a bearing (52), a rotating rod (53), and fan blades (54). The fan blades (54) are fixedly installed at the top of the rotating rod (53) and are located inside the hole (3).

2. The structure of the PCB motor end cover of a drone according to claim 1, wherein: The connecting rod (51) is fixedly installed inside the hole (3), and the bearing (52) is fixedly installed at the end of the connecting rod (51). The bottom of the rotating rod (53) is fixedly connected to the inner ring of the bearing (52).

3. The structure of the PCB motor end cover of a drone according to claim 1, characterized in that: A circular groove is provided at the bottom of the cover (1), and the filter screen (4) is movably connected inside the circular groove.

4. The structure of the motor end cover of the UAV PCB according to claim 1, characterized in that: A notch (7) is provided at the bottom of the cover (1). A fixing groove (6) is provided on the outer wall of the filter screen (4), and one end of a clamping rod (8) is inserted into the fixing groove (6).

5. The structure of the motor end cover of the drone PCB according to claim 4, characterized in that: A sliding groove (9) is provided on one side of the inner wall of the notch (7). The other end of the clamping rod (8) is slidably connected inside the sliding groove (9). The bottom of the clamping rod (8) is fixedly connected to a dial block (11).

6. The structure of the PCB motor end cover of a drone according to claim 5, characterized in that: A spring (10) is provided inside the sliding groove (9). The two ends of the spring (10) are respectively fixedly connected to the end of the inner wall of the sliding groove (9) far away from the opening and the end of the clamping rod (8) located inside the sliding groove (9).

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