An electric motor, an angle adjustment device and an aircraft

Abstract

The utility model discloses a motor, angle adjusting device and aircraft, wherein the motor includes: frame, stator, rotor, output end and limiting portion, stator is fixed in frame, rotor is fixed in output end, stator is located in the rotor, limiting portion includes limiting bulge and limiting groove, the length of limiting bulge along the length of rotor rotation direction of limiting groove along the length of rotor rotation direction is less, limiting bulge is located in limiting groove, one of limiting bulge and limiting groove is located on output end, and the other is located on stator. When the rotor rotates, will drive output end rotation, thereby make limiting bulge and limiting groove produce relative rotation, when the end of limiting bulge and limiting groove contact, then will block output end continue to rotate, thereby control the rotation angle range of output end, to avoid the rotation angle of output end too big, and then guarantee the output reliability and safety of motor.

Description

Technical Field

[0001] This utility model relates to the field of aircraft technology, and in particular to a motor, an angle adjustment device, and an aircraft. Background Technology

[0002] To increase the reconnaissance range of an aircraft, reconnaissance tools are usually mounted on angle adjustment devices, which are typically located on the bottom of the aircraft. For example, in the case of a drone, a pod can be mounted on the bottom of the drone, and a optics device can be installed on the pod, allowing the attitude of the optics device to be adjusted.

[0003] However, for existing pods, the motors used mainly limit the rotation range by reversing forward and reverse. However, in practical applications, control errors may occur, leading to excessive rotation angles, which can damage the angle adjustment device.

[0004] Therefore, how to provide a motor that is easy to control the rotation range is a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] One objective of this invention is to provide a motor that can effectively control its rotation range, thereby ensuring its operational reliability. Another objective is to provide an angle adjustment device including the aforementioned motor. Yet another objective is to provide an aircraft that includes the aforementioned angle adjustment device.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] An electric motor includes: a frame, a stator, a rotor, an output end, and a limiting part. The stator is fixed to the frame, and the rotor is fixed to the output end. The stator is located inside the rotor. The limiting part includes a limiting protrusion and a limiting groove. The length of the limiting protrusion along the rotation direction of the rotor is less than the length of the limiting groove along the rotation direction of the rotor. The limiting protrusion is located inside the limiting groove. One of the limiting protrusion and the limiting groove is provided on the output end, and the other is provided on the stator.

[0008] In some embodiments, the stator includes a support shaft and an iron core. The support shaft is disposed on the base, and the iron core is fixed to the outer periphery of the support shaft. A through hole is provided in the support shaft. The output end includes a housing and a rotating shaft disposed in the housing. The rotor is fixed to the inner wall of the housing, and the rotating shaft is rotatably connected to the through hole.

[0009] In some embodiments, the limiting protrusion is provided on one end of the support shaft facing the housing, and the limiting groove is provided on the housing.

[0010] In some embodiments, the support shaft is integrally formed on the base, and the rotating shaft is integrally formed on the housing.

[0011] In some embodiments, the base is provided with an encoder chamber, the encoder chamber is provided with an encoder, one end of the rotating shaft away from the housing extends into the encoder chamber, and the end of the rotating shaft extending into the encoder chamber is provided with a magnetic ring.

[0012] In some embodiments, the shaft is mounted in the through hole via a bearing.

[0013] An angle adjustment device includes a motor as described in any one of the above claims, and further includes a first drive assembly, a first movable arm, a second drive assembly, a second movable arm, and a third drive assembly, wherein at least one of the first drive assembly, the second drive assembly, and the third drive assembly includes the motor;

[0014] The drive end of the first drive component is connected to the first movable arm, and the first drive component is used to drive the first movable arm to rotate around a first direction;

[0015] The fixed end of the second drive component is connected to the first movable arm, and the drive end of the second drive component is connected to the second movable arm. The second drive component is used to drive the second movable arm to rotate around the second direction.

[0016] The fixed end of the third drive assembly is connected to the second movable arm, and the drive end of the third drive assembly is used to connect to the part to be adjusted. The third drive assembly is used to drive the part to be adjusted to rotate around a third direction.

[0017] In some embodiments, the first movable arm is a bent arm, the second movable arm is located below the first drive assembly, the second movable arm is a U-shaped arm, and the member to be adjusted is located between the two branch ends of the U-shaped arm.

[0018] In some embodiments, the angle adjustment device further includes a shock-absorbing device, and the fixed end of the first drive component is connected to the shock-absorbing device.

[0019] An aircraft comprising the angle adjustment device described in any of the preceding claims.

[0020] Compared with existing technologies, the above technical solution has the following advantages:

[0021] This utility model provides a motor comprising: a frame, a stator, a rotor, an output end, and a limiting part. The stator is fixed to the frame, and the rotor is fixed to the output end. The stator is located inside the rotor. When the stator is energized, the rotor can rotate relative to the stator. The limiting part includes a limiting protrusion and a limiting groove. The length of the limiting protrusion along the rotor rotation direction is less than the length of the limiting groove along the rotor rotation direction. The limiting protrusion is located within the limiting groove. One of the limiting protrusion and the limiting groove is located on the output end, and the other is located on the stator. For example, if the limiting protrusion is located on the stator, the limiting groove is located on the output end; if the limiting protrusion is located on the output end, the limiting groove is located on the stator. When the rotor rotates, it drives the output end to rotate, causing the limiting protrusion and the limiting groove to rotate relative to each other. When the ends of the limiting protrusion and the limiting groove contact each other, they prevent the output end from continuing to rotate, thereby controlling the rotation angle range of the output end to avoid excessive rotation angle, thus ensuring the output reliability and safety of the motor. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0023] Figure 1 A three-dimensional structural diagram of an angle adjustment device provided in a specific embodiment of this utility model;

[0024] Figure 2 for Figure 1 Side view;

[0025] Figure 3 for Figure 2 AA section view in the middle;

[0026] Figure 4 for Figure 3 Enlarged view of region B in the image;

[0027] Figure 5 This is a schematic diagram of the structure of the first movable arm;

[0028] Figure 6 This is a schematic diagram of the second movable arm.

[0029] The attached figures are labeled as follows:

[0030] 100 - Shock absorption device;

[0031] 200 - First drive component;

[0032] 300 - First movable arm;

[0033] 400-Second drive assembly, 410-Frame, 411-Encoder chamber, 412-Encoder, 413-Magnetic ring, 420-Stator, 421-Iron core, 422-Support shaft, 430-Rotor, 440-Output end, 441-Housing shell, 442-Rotating shaft, 450-Limiting part, 451-Limiting protrusion, 452-Limiting groove, 460-Bearing;

[0034] 500 - Second movable arm;

[0035] 600 - Third drive component;

[0036] 700 - Item to be adjusted. Detailed Implementation

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0038] Please refer to Figures 1 to 5 The present invention provides a motor comprising: a frame 410, a stator 420, a rotor 430, an output end 440, and a limiting part 450. The stator 420 is fixedly mounted on the frame 410, and the rotor 430 is fixedly mounted on the output end 440. The stator 420 is located within the rotor 430. When the stator 420 is energized, the rotor 430 can rotate relative to the stator 420. The limiting part 450 includes a limiting protrusion 451 and a limiting groove 452. The limiting protrusion 451 rotates along the rotation... The length of the rotor 430 in the rotational direction is less than the length of the limiting groove 452 in the rotational direction of the rotor 430. The limiting protrusion 451 is located within the limiting groove 452. One of the limiting protrusion 451 and the limiting groove 452 is located on the output end 440, and the other is located on the stator 420. For example, if the limiting protrusion 451 is located on the stator 420, the limiting groove 452 is located on the output end 440; if the limiting protrusion 451 is located on the output end 440, the limiting groove 452 is located on the stator 420. When the rotor 430 rotates, it will drive the output end 440 to rotate, thereby causing the limiting protrusion 451 and the limiting groove 452 to rotate relative to each other. When the ends of the limiting protrusion 451 and the limiting groove 452 contact each other, they will prevent the output end 440 from continuing to rotate, thereby controlling the rotation angle range of the output end 440 to avoid the rotation angle of the output end 440 being too large, thus ensuring the output reliability and safety of the motor.

[0039] In some embodiments, the stator 420 includes a support shaft 422 and an iron core 421. The support shaft 422 is disposed on the base 410, wherein the support shaft 422 can be integrally formed on the base 410, and the iron core 421 is fixed to the outer periphery of the support shaft 422. A through hole is provided within the support shaft 422. The output end 440 includes a housing 441 and a rotating shaft 442 disposed within the housing 441. The rotating shaft 442 can be integrally formed within the housing 441, wherein the housing 441 faces the base 410. One end is open, and the rotating shaft 442 extends toward the base 410. The rotor 430 is fixed to the inner wall of the housing 441. The rotating shaft 442 is rotatably connected to the through hole. For example, the rotating shaft 442 can be installed in the through hole by bearings 460. Specifically, the rotating shaft 442 can be installed by multiple bearings 460 distributed along the axial direction to ensure the stability of the rotating shaft 442 during rotation. The bearings 460 can be axially limited by nuts installed at the end of the rotating shaft 442.

[0040] In some embodiments, a limiting protrusion 451 is provided on one end of the support shaft 422 facing the outer casing 441. The limiting protrusion 451 is preferably integrally formed on the end of the support shaft 422, and a limiting groove 452 is provided on the outer casing 441. The limiting protrusion 451 is preferably an arc-shaped protrusion, and the limiting groove 452 is preferably an arc-shaped groove. When the outer casing 441 rotates relative to the base 410, when one end of the arc-shaped groove contacts the side of the arc-shaped protrusion, it will prevent the outer casing 441 from continuing to rotate, thereby achieving the function of limiting the rotation angle of the outer casing 441.

[0041] In some embodiments, the base 410 is provided with an encoder chamber 411, and the encoder chamber 411 is provided with an encoder 412, for example... Figure 4 As shown, an encoder chamber 411 is provided at the end of the base 410 away from the outer casing 441. The end of the rotating shaft 442 away from the outer casing 441 extends into the encoder chamber 411. A magnetic ring 413 is provided at the end of the rotating shaft 442 that extends into the encoder chamber 411. By placing the encoder 412 in an independent chamber, electromagnetic interference can be avoided, thereby ensuring the accuracy of its detection of the rotation angle of the rotating shaft 442.

[0042] The angle adjustment device provided in this embodiment includes a motor as described in any of the above embodiments, and also includes a first drive assembly 200, a first movable arm 300, a second drive assembly 400, a second movable arm 500, and a third drive assembly 600. At least one of the first drive assembly 200, the second drive assembly 400, and the third drive assembly 600 includes a motor, that is, the first drive assembly 200, the second drive assembly 400, and the third drive assembly 600 can all be driven by the above-mentioned motor. Taking the second drive assembly 400 as an example, the base 410 can be integrally formed on the first movable arm 300, and the output end 440 can be integrally formed on the second movable arm 500. The driving end of the first driving assembly 200 is connected to the first movable arm 300, and the first driving assembly 200 is used to drive the first movable arm 300 to rotate around a first direction; the fixed end of the second driving assembly 400 is connected to the first movable arm 300, and the driving end of the second driving assembly 400 is connected to the second movable arm 500, and the second driving assembly 400 is used to drive the second movable arm 500 to rotate around a second direction; the fixed end of the third driving assembly 600 is connected to the second movable arm 500, and the driving end of the third driving assembly 600 is used to connect to the part to be adjusted 700, and the third driving assembly 600 is used to drive the part to be adjusted 700 to rotate around a third direction. The first direction, the second direction, and the third direction are three different directions. Specifically, the first direction can be a vertical direction; the second direction can be horizontal, that is, the second direction and the first direction are perpendicular to each other, or the second direction can have an angle with the vertical direction, for example... Figure 1 As shown, the second direction is a downward-sloping direction, and the angle between the downward-sloping second direction and the downward-vertical direction is an acute angle; the third direction is preferably perpendicular to the second direction.

[0043] In some embodiments, the first movable arm 300 is a bent arm, and the second movable arm 500 is located below the first drive assembly 200. One purpose of designing the first movable arm 300 as a bent arm is to position the member to be adjusted 700 so that it is directly below the first drive assembly 200. For example, this can allow the first direction and a third direction to intersect, thereby helping to ensure that the center of gravity of the member to be adjusted 700 is located in the first direction. The second movable arm 500 is preferably a U-shaped arm, with the member to be adjusted 700 located between the two branches of the U-shaped arm to ensure the stability of the member to be adjusted 700 when pitching relative to the U-shaped arm. For example… Figure 1 As shown, the component to be adjusted 700 is an optical tool. The first movable arm 300 extends in the direction of rearward and downward, and the two branch ends of the U-shaped arm extend in the direction of forward and downward. The first drive assembly 200 can drive the first movable arm 300 to rotate in the horizontal plane, the second drive assembly 400 can drive the U-shaped arm to swing left and right, and the third drive assembly 600 can drive the optical tool to pitch forward and backward.

[0044] In some embodiments, the angle adjustment device further includes a shock absorption device 100. The fixed end of the first drive assembly 200 is connected to the shock absorption device 100, which is connected to the bottom of the aircraft. The shock absorption device 100 can play a shock absorption role, thereby ensuring the safety of the angle adjustment device. The specific structure of the shock absorption device 100 can be referred to the prior art, and will not be described in detail in this embodiment.

[0045] The present invention provides an aircraft comprising the angle adjustment device provided in any of the above embodiments, and a fuselage, wherein the angle adjustment device is mounted on the bottom of the fuselage. The aircraft may be a drone. For the beneficial effects of the aircraft, please refer to the motor and angle adjustment device provided in the above embodiments, which will not be repeated here.

[0046] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0047] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0048] The present invention provides a detailed description of a motor, an angle adjustment device, and an aircraft. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The descriptions of these embodiments are merely for the purpose of helping to understand the core ideas of the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. An electric motor, characterized in that, include: The machine includes a frame (410), a stator (420), a rotor (430), an output end (440), and a limiting part (450). The stator (420) is fixed to the frame (410), and the rotor (430) is fixed to the output end (440). The stator (420) is located inside the rotor (430). The limiting part (450) includes a limiting protrusion (451) and a limiting groove (452). The length of the limiting protrusion (451) along the rotation direction of the rotor (430) is less than the length of the limiting groove (452) along the rotation direction of the rotor (430). The limiting protrusion (451) is located inside the limiting groove (452). One of the limiting protrusion (451) and the limiting groove (452) is provided on the output end (440), and the other is provided on the stator (420).

2. The motor according to claim 1, characterized in that, The stator (420) includes a support shaft (422) and an iron core (421). The support shaft (422) is mounted on the base (410), and the iron core (421) is fixed to the outer periphery of the support shaft (422). The support shaft (422) has a through hole. The output end (440) includes a housing (441) and a rotating shaft (442) mounted inside the housing (441). The rotor (430) is fixed to the inner wall of the housing (441), and the rotating shaft (442) is rotatably connected to the through hole.

3. The motor according to claim 2, characterized in that, The limiting protrusion (451) is provided on one end of the support shaft (422) facing the outer shell (441), and the limiting groove (452) is provided on the outer shell (441).

4. The motor according to claim 2, characterized in that, The support shaft (422) is integrally formed on the base (410), and the rotating shaft (442) is integrally formed on the outer shell (441).

5. The motor according to claim 2, characterized in that, The base (410) is provided with an encoder chamber (411), and the encoder chamber (411) is provided with an encoder (412). One end of the rotating shaft (442) away from the outer shell (441) extends into the encoder chamber (411), and the end of the rotating shaft (442) extending into the encoder chamber (411) is provided with a magnetic ring (413).

6. The motor according to claim 2, characterized in that, The rotating shaft (442) is mounted in the through hole via a bearing (460).

7. An angle adjustment device, characterized in that, The motor includes any one of claims 1 to 6, and further includes a first drive assembly (200), a first movable arm (300), a second drive assembly (400), a second movable arm (500), and a third drive assembly (600), wherein at least one of the first drive assembly (200), the second drive assembly (400), and the third drive assembly (600) includes the motor; The driving end of the first driving component (200) is connected to the first movable arm (300), and the first driving component (200) is used to drive the first movable arm (300) to rotate around a first direction; The fixed end of the second drive assembly (400) is connected to the first movable arm (300), and the drive end of the second drive assembly (400) is connected to the second movable arm (500). The second drive assembly (400) is used to drive the second movable arm (500) to rotate around the second direction. The fixed end of the third drive assembly (600) is connected to the second movable arm (500), and the drive end of the third drive assembly (600) is used to connect to the member to be adjusted (700). The third drive assembly (600) is used to drive the member to be adjusted (700) to rotate around a third direction.

8. The angle adjustment device according to claim 7, characterized in that, The first movable arm (300) is a bent arm, the second movable arm (500) is located below the first drive assembly (200), the second movable arm (500) is a U-shaped arm, and the member to be adjusted (700) is located between the two branch ends of the U-shaped arm.

9. The angle adjustment device according to claim 7 or 8, characterized in that, The angle adjustment device further includes a shock absorption device (100), and the fixed end of the first drive assembly (200) is connected to the shock absorption device (100).

10. An aircraft, characterized in that, Includes the angle adjustment device as described in any one of claims 7 to 9.

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