Swinging arm, gondola and aircraft

Abstract

This utility model discloses a swing arm, a pod, and an aircraft. The swing arm includes a U-shaped boom, a motor, an encoder, and a rotating shaft. The U-shaped boom includes a first arm and a second arm. The motor includes a fixed part and a rotating part. The fixed part is fixed to the first arm, and the rotating part is rotatably connected to the first arm. One end of the rotating part facing the second arm is used to connect to an optical fixture, and the rotating part has a wire-passing hole. The encoder is located on the second arm. The rotating shaft is rotatably connected to the second arm and is used to connect to the optical fixture. The rotating shaft has a through hole. One end of the cable passes through the wire-passing hole, first through the optical fixture, then through the through hole in the rotating shaft, and finally connects to the encoder. Because the rotating part of the motor, the optical fixture, and the rotating shaft have holes for the cable to pass through, the cable can pass laterally through the optical fixture, which effectively facilitates the connection between the cable and the encoder and reduces the cable length, thereby saving costs.

Description

Technical Field

[0001] This utility model relates to the field of aircraft technology, and in particular to a swing arm, a pod, and an aircraft. Background Technology

[0002] A pod is a support device that can be suspended from an aircraft. Optical instruments, such as image acquisition devices, can be installed on the pod to acquire image signals.

[0003] In the prior art, a swing arm is usually a U-shaped structure. Optical components are connected in the space within the U-shaped structure of the swing arm. One end of the U-shaped structure is usually equipped with a drive motor, and the other end is equipped with a support shaft. An encoder is located at the end with the support shaft. The controller of the drive motor is equipped with an interface. One end of the cable is connected to the interface, and the other end needs to be routed through a U-shape inside the U-shaped structure before being connected to the encoder. This wiring method increases the length of the cable and is inconvenient for connection.

[0004] Therefore, how to facilitate the connection between cables and encoders while reducing cable length 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 swing arm that can effectively facilitate the connection of cables and encoders and reduce cable length, thereby saving costs. Another objective is to provide a pod including the aforementioned swing arm, and yet another objective is to provide an aircraft including the aforementioned pod.

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

[0007] A swing arm, comprising:

[0008] The U-shaped boom includes a first boom and a second boom;

[0009] The motor includes a fixed part and a rotating part. The fixed part is fixed to a first support arm, and the rotating part is rotatably connected to the first support arm. One end of the rotating part facing the second support arm is used to connect with an optical tool. The rotating part is provided with a wire hole for a cable to pass through.

[0010] The encoder is disposed on the second arm;

[0011] A rotating shaft is rotatably connected to the second support arm. The rotating shaft is used to connect with the optical instrument. The rotating shaft has a through hole for the cable that passes through the wire hole and the optical instrument in sequence to connect with the encoder.

[0012] In some embodiments, the first support arm has a motor cavity, the motor cavity has a support shaft, the fixing part is fixed in the motor cavity, the rotating part is rotatably connected to the support shaft, the rotating part has a connecting part at one end facing the second support arm, the connecting part is used for optical connection, and the connecting part has the wire hole.

[0013] In some embodiments, the rotating part includes an iron core and a rotating sleeve, the rotating sleeve is rotatably connected to the support shaft via a first bearing, the iron core is sleeved on the rotating sleeve, and the connecting part is located on one end of the rotating sleeve facing the second support arm.

[0014] In some embodiments, the connecting part is a rotating disk, and the threading hole is eccentrically located on the rotating disk.

[0015] In some embodiments, a mounting boss is provided on the center of the rotating disk facing one end of the second support arm, and a positioning pin is provided eccentrically on the rotating disk. The mounting boss is used to cooperate with a mounting hole provided on one side of the optical instrument, and the positioning pin is used to cooperate with a positioning hole provided on one side of the optical instrument.

[0016] In some embodiments, the second arm has an encoder cavity, the encoder cavity has a partition, one end of the rotating shaft is rotatably connected to the partition, and the encoder is located in the cavity of the partition away from the first arm.

[0017] In some embodiments, a connecting plate is provided on one end of the rotating shaft facing the first support arm, the connecting plate being used to connect with the optical tool, and a rotation limiting part is provided between the end face of the connecting plate facing the partition and the partition, the rotation limiting part being used to limit the rotation angle of the rotating shaft relative to the second support arm.

[0018] In some embodiments, the partition plate is provided with a bearing seat, the rotating shaft is rotatably connected to the bearing seat via a second bearing, the bearing seat is provided with a bearing pressure block for limiting the axial movement of the second bearing, the encoder is connected to the bearing pressure block, and a magnetic ring is provided at one end of the rotating shaft opposite to the connecting disk.

[0019] A pod includes a swing arm as described in any of the above claims, and also includes an optical element. One side of the optical element is connected to the rotating part, and the other side is connected to the rotating shaft. The optical element has a first cable routing hole on the side facing the first arm and a second cable routing hole on the side facing the second arm. The first cable routing hole and the second cable routing hole are interconnected and used for the cable to pass through.

[0020] An aircraft includes the aforementioned pod, the pod being mounted on the bottom of the aircraft.

[0021] Compared with existing technologies, the above technical solution has the following advantages:

[0022] This utility model provides a swing arm, comprising: a U-shaped arm, a motor, an encoder, and a rotating shaft. The U-shaped arm includes a first arm and a second arm. The motor includes a fixed part and a rotating part. The fixed part is fixed to the first arm, and the rotating part is rotatably connected to the first arm. One end of the rotating part facing the second arm is used to connect to an optical fixture. The rotating part has a through hole for a cable to pass through, which is used to connect to the encoder. The encoder is located on the second arm. The rotating shaft is rotatably connected to the second arm and is used to connect to the optical fixture. The motor can drive the optical fixture to rotate around the axis of the rotating shaft. The rotating shaft has a through hole. One end of the cable passes through the through hole in the rotating part of the motor, first through the optical fixture, then through the through hole in the rotating shaft, and finally connects to the encoder. Because the rotating part of the motor, the optical fixture, and the rotating shaft have holes for the cable to pass through, the cable can pass laterally through the optical fixture, which effectively facilitates the connection between the cable and the encoder and reduces the cable length, thereby saving costs.

[0023] The pod provided by this utility model has corresponding advantages because it includes the aforementioned swing arm.

[0024] The aircraft provided by this utility model, because it includes the above-mentioned pod, also has the advantages of the above-mentioned swing arm and pod. Attached Figure Description

[0025] 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.

[0026] Figure 1 A schematic diagram of the structure of a pod provided for a specific embodiment of this utility model;

[0027] Figure 2 for Figure 1 A schematic diagram of the transverse cross-sectional structure of the swing arm in the diagram;

[0028] Figure 3 for Figure 1 A three-dimensional structural diagram of the swing arm in the diagram;

[0029] Figure 4 for Figure 1 A schematic diagram of the vertical cross-sectional structure of the swing arm in the diagram;

[0030] Figure 5 for Figure 1 A three-dimensional structural diagram of the optical instrument from one of its perspectives;

[0031] Figure 6 for Figure 1 A three-dimensional structural diagram of the optical instrument from another perspective.

[0032] The attached figures are labeled as follows:

[0033] 100 - Shock absorption device;

[0034] 200-directional motor;

[0035] 300-Load-bearing boom;

[0036] 400-roll motor;

[0037] 500-Swing arm, 501-Fixing part, 502-Motor cavity, 503-First support arm, 504-First bearing, 505-Rotating disk, 506-Iron core, 507-Wire hole, 508-Rotating part, 509-Nut, 510-Support shaft, 511-Mounting boss, 512-Positioning pin, 513-Connecting disk, 514-Rotating shaft, 515-Through hole, 516-Second bearing, 517-Partition plate, 518-Bearing pressure block, 519-Magnetic ring, 520-Second support arm, 521-Encoder, 522-Encoder cavity;

[0038] 600 - Optical tool, 601 - Mounting hole, 602 - Positioning hole, 603 - First wiring hole, 604 - Second wiring hole. Detailed Implementation

[0039] 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.

[0040] Please refer to Figures 1 to 6The present invention provides a swing arm 500 comprising: a U-shaped arm, a motor, an encoder 521, and a rotating shaft 514. The U-shaped arm includes a first arm 503 and a second arm 520. The motor includes a fixed part 501 and a rotating part 508. The fixed part 501 is fixed to the first arm 503, and the rotating part 508 is rotatably connected to the first arm 503. For example, the stator of the motor can be used as the rotating part 508, and the rotor as the fixed part 501. When the stator is fixed, the rotor can rotate relative to the stator. The end of the rotating part 508 facing the second arm 520 is used to connect to an optical fixture 600, for example, by means of screws. The rotating part 508 has a wire hole 507 for a cable to pass through, which is used to connect to the encoder 521. The encoder 521 is located on the second arm 520, that is, the encoder 521 is located away from the motor to avoid electromagnetic interference. The rotating shaft 514 is rotatably connected to the second arm 520 and is used to connect to the optical fixture 600. The motor can drive the optical fixture 600 to rotate around the axis of the rotating shaft 514. The rotating shaft 514 has a through hole 515. One end of the cable passes through the wire hole 507 of the rotating part 508 of the motor, passes through the optical fixture 600, then through the through hole 515 in the rotating shaft 514, and finally connects to the encoder 521. Because the rotating part 508 of the motor, the optical fixture 600 and the rotating shaft 514 have holes for the cable to pass through, the cable can pass laterally through the optical fixture 600, which can effectively facilitate the connection between the cable and the encoder 521 and reduce the length of the cable, thereby saving costs.

[0041] In some embodiments, the first arm 503 is provided with a motor cavity 502, and the motor cavity 502 is provided with a support shaft 510, such as... Figure 2 As shown, the first arm 503 has a motor cavity 502 near its end, opening towards the second arm 520. A support shaft 510 extends towards the second arm 520. The support shaft 510 is preferably a hollow shaft. A fixed part 501 is fixed inside the motor cavity 502. A rotating part 508 is rotatably connected to the support shaft 510. One end of the rotating part 508 facing the second arm 520 has a connecting part for connecting the optical fixture 600. The connecting part has a wire hole 507 through which the cable for connecting to the encoder 521 on the motor can pass. The motor can drive the optical fixture 600 to rotate within a certain angle range to prevent the rotating part 508 from pulling on the cable and causing it to break or be damaged.

[0042] In some embodiments, the rotating part 508 includes an iron core 506 and a rotating sleeve, the rotating sleeve being rotatably connected to the support shaft 510 via a first bearing 504, such as... Figure 1As shown, the rotating sleeve can be sleeved on the support shaft 510 by multiple first bearings 504 distributed along the axial direction. The first bearings 504 can be restricted in their axial position by nuts 509 threaded to the end of the support shaft 510. The iron core 506 is sleeved on the rotating sleeve and the two are fixedly connected relative to each other. The connecting part is located on the rotating sleeve at one end facing the second support arm 520. When the winding on the iron core 506 is energized, the iron core 506 and the rotating sleeve will rotate relative to the axis of the support shaft 510, thereby driving the optical tool 600 to rotate.

[0043] In some embodiments, such as Figure 3 and Figure 4 As shown, the connecting part is a rotating disk 505, which has multiple first connecting holes distributed along the circumference for connecting with the optical instrument 600. The rotating disk 505 facilitates connection with the optical instrument 600. The wire threading hole 507 is eccentrically located on the rotating disk 505; for example, the shape of the eccentric hole can be rectangular or other shapes, which can be selected according to actual needs. In addition, the rotating disk 505 also has arc-shaped holes distributed along the circumference to facilitate heat dissipation and weight reduction.

[0044] In some embodiments, a mounting boss 511 is provided on the center of the rotating disk 505 facing the second support arm 520, and a positioning pin 512 is provided eccentrically on the rotating disk 505; correspondingly, a mounting hole 601 and a positioning hole 602 are provided on one side of the optical fixture 600. During assembly, the mounting hole 601 on the optical fixture 600 and the mounting boss 511 on the rotating disk 505 are interlocked, and the positioning hole 602 on the optical fixture 600 and the positioning pin 512 on the rotating disk 505 are interlocked to restrict the rotation of the optical fixture 600 relative to the rotating disk 505. After the positions of the optical fixture 600 and the rotating disk 505 are determined, screws are passed through the side wall of the optical fixture 600 from the inside of the optical fixture 600, and the protruding end of the screw is fixed in the first connecting hole on the rotating disk 505. Preferably, there are multiple screws, and the multiple screws are evenly distributed along the circumferential direction to ensure the stability of the connection.

[0045] In some embodiments, the second arm 520 is provided with an encoder cavity 522, and the encoder cavity 522 is provided with a partition 517, such as Figure 2 As shown, the partition 517 divides the encoder cavity 522 into two cavities, left and right. One end of the rotating shaft 514 is rotatably connected to the partition 517. The encoder 521 is located in the cavity of the partition 517 away from the first support arm 503. The cable can pass through the through hole 515 inside the rotating shaft 514 to connect with the encoder 521. Since the encoder 521 is located far away from the motor, electromagnetic interference can be avoided, thereby ensuring the accurate detection of the rotation angle of the rotating shaft 514 by the encoder 521.

[0046] In some embodiments, to facilitate the connection between the rotating shaft 514 and the optical fixture 600, a connecting plate 513 is provided at one end of the rotating shaft 514 facing the first support arm 503. The connecting plate 513 is used to connect with the optical fixture 600. The connecting plate 513 is provided with second connecting holes. For example, multiple second connecting holes can be provided on the connecting plate 513 evenly distributed in the circumferential direction. The side of the optical fixture 600 facing the connecting plate 513 is provided with fastening holes corresponding to the second connecting holes. The connecting plate 513 and the optical fixture 600 can be fixed by screws passing through the second connecting holes and the fastening holes. To limit the rotation angle of the connecting plate 513, a rotation limiting part is provided between the end face of the connecting plate 513 facing the partition 517 and the partition 517. The rotation limiting part can limit the rotation angle of the rotating shaft 514 relative to the second support arm 520. The rotation limiting part includes a limiting boss on the connecting plate 513 and a stop on the partition plate 517. When the connecting plate 513 rotates to contact the stop, it will prevent the connecting plate 513 from continuing to rotate. In addition, the rotation limiting part can also use other structures for limiting, such as limiting by a protrusion and a groove. The length of the protrusion along the rotation direction of the connecting plate 513 is less than the length of the groove along the rotation direction of the connecting plate 513. The protrusion is located in the groove. One of the protrusion and the groove is provided on the connecting plate 513 and the other is provided on the partition plate 517. When the protrusion contacts the end of the groove, it will prevent the connecting plate 513 from rotating.

[0047] In some embodiments, a bearing seat is provided on the partition plate 517, and the rotating shaft 514 is rotatably connected to the bearing seat via a second bearing 516. The second bearing 516 can improve the smoothness of the rotating shaft 514 during rotation. The bearing seat is provided with a bearing pressure block 518 for limiting the axial movement of the second bearing 516. The rotating shaft 514 can move relative to the second bearing 516 to adjust the axial position of the connecting plate 513, thereby facilitating the connection between the connecting plate 513 and the optical tool 600, and allowing for a wider machining tolerance between the optical tool 600 and the rotating shaft 514 in the axial direction, thus reducing machining costs. The encoder 521 is connected to the bearing pressure block 518, that is, the encoder 521 is fixed relative to the bearing pressure block 518. A magnetic ring 519 is provided on the end of the rotating shaft 514 facing away from the connecting plate 513, and the magnetic ring 519 is located between the second bearing 516 and the encoder 521. Furthermore, to facilitate the assembly of the connecting plate 513 and the optical fixture 600, the partition plate 517 is provided with clearance holes, and the end of the encoder cavity 522 away from the connecting plate 513 is provided with a removable cover plate. During installation, screws can pass through the clearance holes and then be inserted into the connecting plate 513 and the optical fixture 600. Finally, the cover plate is connected to the encoder cavity 522.

[0048] This utility model embodiment also provides a pod, including the swing arm 500 provided in any of the above embodiments, and also includes an optical element 600, one side of which is connected to the rotating part 508, and the other side is connected to the rotating shaft 514, as shown below. Figure 5 and Figure 6 As shown, the optical fixture 600 has a first wiring hole 603 on the side facing the first support arm 503 and a second wiring hole 604 on the side facing the second support arm 520. The first wiring hole 603 and the second wiring hole 604 are interconnected and used for cables to pass through. The first wiring hole 603 corresponds to the wire hole 507 on the rotating part 508, and the second wiring hole 604 corresponds to the through hole 515 in the rotating shaft 514. Regarding the beneficial effects of the pod, refer to the swing arm 500 provided in the above embodiment; further details are omitted here. In addition, the pod also includes a shock absorber 100, an azimuth motor 200, a support arm 300, and a roll motor 400. The shock absorber 100 can be connected to the bottom of the aircraft. The azimuth motor 200 is connected to the shock absorber 100. The rotor of the azimuth motor 200 is connected to the support arm 300. The roll motor 400 is connected to the support arm 300. The rotor of the roll motor 400 is connected to the swing arm 500. The azimuth motor 200 can drive the support arm 300 to rotate in the horizontal plane. The roll motor 400 can drive the swing arm 500 to swing. The motor installed on the swing arm 500 can drive the optical instrument 600 to perform pitching motion, thereby realizing the rotation of the optical instrument 600 in three different directions.

[0049] This utility model embodiment also provides an aircraft, including the aforementioned pod, which is mounted on the bottom of the aircraft. The aircraft can be a drone. Regarding the beneficial effects of the aircraft, refer to the swing arm 500 provided in the above embodiment; further details are omitted here.

[0050] 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.

[0051] 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.

[0052] The foregoing has provided a detailed description of the swing arm, pod, and aircraft provided by this utility model. Specific examples have been used to illustrate the principles and implementation methods of this utility model. The descriptions of the embodiments above are merely for the purpose of helping to understand the core ideas of this utility model. It should be noted that those skilled in the art can make various improvements and modifications to this utility model without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A swing arm, characterized in that, include: The U-shaped boom includes a first boom (503) and a second boom (520). The motor includes a fixed part (501) and a rotating part (508). The fixed part (501) is fixed to the first support arm (503), and the rotating part (508) is rotatably connected to the first support arm (503). One end of the rotating part (508) facing the second support arm (520) is used to connect with the optical instrument (600). The rotating part (508) is provided with a wire hole (507) for a cable to pass through. Encoder (521), the encoder (521) is disposed on the second arm (520); A rotating shaft (514) is rotatably connected to the second support arm (520). The rotating shaft (514) is used to connect with the optical instrument (600). The rotating shaft (514) has a through hole (515) for the cable that passes through the wire hole (507) and the optical instrument (600) in sequence to connect with the encoder (521).

2. The swing arm according to claim 1, characterized in that, The first support arm (503) is provided with a motor cavity (502), and the motor cavity (502) is provided with a support shaft (510). The fixing part (501) is fixed in the motor cavity (502), and the rotating part (508) is rotatably connected to the support shaft (510). The rotating part (508) is provided with a connecting part at one end facing the second support arm (520). The connecting part is used for connecting the optical tool (600), and the connecting part is provided with the wire hole (507).

3. The swing arm according to claim 2, characterized in that, The rotating part (508) includes an iron core (506) and a rotating sleeve. The rotating sleeve is rotatably connected to the support shaft (510) via a first bearing (504). The iron core (506) is sleeved on the rotating sleeve. The connecting part is located on one end of the rotating sleeve facing the second support arm (520).

4. The swing arm according to claim 3, characterized in that, The connecting part is a rotating disk (505), and the thread hole (507) is eccentrically located on the rotating disk (505).

5. The swing arm according to claim 4, characterized in that, The rotating disk (505) has a mounting boss (511) at the middle of one end facing the second support arm (520), and a positioning pin (512) is provided eccentrically on the rotating disk (505). The mounting boss (511) is used to cooperate with the mounting hole (601) provided on one side of the optical tool (600), and the positioning pin (512) is used to cooperate with the positioning hole (602) provided on one side of the optical tool (600).

6. The swing arm according to any one of claims 1 to 5, characterized in that, The second arm (520) is provided with an encoder cavity (522), and the encoder cavity (522) is provided with a partition (517). One end of the rotating shaft (514) is rotatably connected to the partition (517), and the encoder (521) is located in the cavity of the partition (517) away from the first arm (503).

7. The swing arm according to claim 6, characterized in that, A connecting plate (513) is provided on one end of the rotating shaft (514) facing the first support arm (503). The connecting plate (513) is used to connect with the optical tool (600). A rotation limiting part is provided between the end face of the connecting plate (513) facing the partition (517) and the partition (517). The rotation limiting part is used to limit the rotation angle of the rotating shaft (514) relative to the second support arm (520).

8. The swing arm according to claim 7, characterized in that, The partition (517) is provided with a bearing seat, and the rotating shaft (514) is rotatably connected to the bearing seat through the second bearing (516). The bearing seat is provided with a bearing pressure block (518) for limiting the axial movement of the second bearing (516). The encoder (521) is connected to the bearing pressure block (518). A magnetic ring (519) is provided at one end of the rotating shaft (514) away from the connecting disk (513).

9. A pod, characterized in that, The swing arm includes any one of claims 1 to 8, and further includes an optical fixture (600), one side of which is connected to the rotating part (508) and the other side is connected to the rotating shaft (514). The optical fixture (600) has a first wiring hole (603) on the side facing the first support arm (503) and a second wiring hole (604) on the side facing the second support arm (520). The first wiring hole (603) and the second wiring hole (604) are interconnected and used for the cable to pass through.

10. An aircraft, characterized in that, It includes the pod as described in claim 9, wherein the pod is mounted on the bottom of the aircraft.

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