Coaxial motor fixing structure of vertical take-off and landing aircraft

Abstract

The utility model provides a coaxial motor fixing structure of a vertical take-off and landing aircraft. The coaxial motor fixing structure comprises a first motor, a second motor, a fixing plate and a fixing mechanism, damping plates are fixedly connected to the first motor and the second motor, and a first through hole is formed in the fixing plate; the fixing mechanism comprises a first ring body and a second ring body which are fixedly connected to the damping plate, and a fixing block is fixedly connected to the first ring body. The second ring body on the second motor is inserted into the first ring body on the first motor, and then the arc-shaped plate is rotated to drive the movable rod to move; the large-diameter part of the movable rod slides into the positioning groove in the second ring body, so that fastening is performed by screwing the threaded rod, installation is simple and convenient, the arc-shaped plate is rotated by unscrewing the threaded rod, the small-diameter part of the movable rod can be driven to slide into the positioning groove, the first ring body and the second ring body can be separated, the steps of dismounting and installing the motor are simplified, and the motor is more convenient to install. And the convenience is improved.

Description

Technical Field

[0001] This utility model relates to a coaxial motor fixing structure, and more particularly to a coaxial motor fixing structure for a vertical take-off and landing aircraft, belonging to the field of aerospace technology. Background Technology

[0002] Electric vertical takeoff and landing (EVTOL) aircraft, also known as electric vertical takeoff and landing (eVTOL) aircraft, are motor-driven aircraft capable of vertical takeoff and landing without a runway. The motors are powered by electric energy sources, including batteries and fuel cells. EVTOL aircraft can be classified along two dimensions: Based on operating mode, they can be divided into manned and unmanned categories. Based on configuration, they can be divided into winged and wingless categories. Wingless aircraft are primarily multi-rotor aircraft, while winged aircraft can be further divided into compound wing aircraft and tiltrotor aircraft, the main difference being the methods of generating vertical lift and forward thrust.

[0003] However, existing technologies involve complex and inconvenient disassembly and installation procedures when replacing or repairing motors. Therefore, a coaxial motor fixing structure for vertical take-off and landing aircraft is proposed. Summary of the Invention

[0004] In view of this, the present invention provides a coaxial motor fixing structure for vertical take-off and landing aircraft to solve or alleviate the technical problems existing in the prior art, and at least provides a beneficial alternative.

[0005] The technical solution of this utility model is as follows: a coaxial motor fixing structure for a vertical take-off and landing aircraft, including a first motor, a second motor, a fixing plate, and a fixing mechanism;

[0006] Both the first motor and the second motor are fixedly connected to a shock-absorbing plate, and the fixed plate has a first through hole;

[0007] The fixing mechanism includes a first ring and a second ring fixedly connected to the shock-absorbing plate. A fixing block is fixedly connected to the first ring. An arc-shaped plate is rotatably connected inside the fixing block. A movable plate is rotatably connected to one side of the arc-shaped plate. A movable rod is rotatably connected to the side of the movable plate away from the arc-shaped plate. The first ring has a through groove and a slot for inserting the movable rod. A threaded rod is threaded inside the arc-shaped plate. A threaded hole for screwing the threaded rod is opened on the first ring. A positioning groove and a sliding groove are symmetrically opened on the second ring. The positioning groove and the sliding groove are connected.

[0008] More preferably, the movable rod is provided with a large diameter portion and a small diameter portion, which are alternately distributed on the movable rod. The outer diameter of the small diameter portion on the movable rod is in clearance fit with the groove width of the slide, and the outer contour of the small diameter portion is adapted to the shape of the inner sidewall of the slide, so that the small diameter portion can slide out along the inner sidewall of the slide towards the opening end.

[0009] More preferably, the outer diameter of the coarse diameter portion on the movable rod is in tolerance fit with the inner diameter of the through groove, the slot, and the positioning groove, and the outer contour of the coarse diameter portion is conjugately matched with the inner sidewall shape of the through groove, the slot, and the positioning groove, so that the coarse diameter portion can slide and be guided along the inner sidewall of the through groove, the slot, and the positioning groove.

[0010] More preferably, the first ring body is coaxially arranged with the first motor, the second ring body is coaxially arranged with the second motor, and the inner surface of the inner ring of the first ring body is closely fitted with the outer surface of the outer ring of the second ring body.

[0011] More preferably, the first through hole is a cylindrical hole, and the outer contour of the outer ring of the second ring is conjugately matched with the inner wall shape of the first through hole.

[0012] More preferably, the shock-absorbing plate is equipped with a number of double-ended bolts, and the fixing plate has a second through hole matching the number of double-ended bolts. The double-ended bolts are fixedly connected to the fixing plate through the second through hole, and reinforcing ribs are fixedly connected to both sides of the fixing plate.

[0013] More preferably, a groove is provided on the inner wall of the first ring body, and the side of the arc plate near the groove forms a clearance gap between the arc plate and the inner wall of the groove along the rotation trajectory of the fixed block.

[0014] The present invention has the following advantages due to the adoption of the above technical solution:

[0015] This invention involves inserting the second ring body on the second motor into the first ring body on the first motor, and then moving the movable rod by rotating the arc plate, causing the larger diameter part of the movable rod to slide into the positioning groove on the second ring body. The installation is then secured by tightening the threaded rod. This makes installation simple and convenient. Furthermore, by loosening the threaded rod and rotating the arc plate, the smaller diameter part of the movable rod can slide into the positioning groove, thus separating the first and second ring bodies. This simplifies the steps of disassembling and installing the motor and improves convenience.

[0016] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application 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 some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a structural diagram of the present invention.

[0019] Figure 2 This is a structural diagram of the fixing plate and the shock-absorbing plate in this utility model.

[0020] Figure 3 This is an enlarged schematic diagram of area A in the structural diagram of the fixing plate and the shock-absorbing plate of this utility model.

[0021] Figure 4 This is a structural diagram of the first ring body and the second ring body in this utility model.

[0022] Figure 5 This is a structural diagram of the movable rod and positioning groove in this utility model.

[0023] in:

[0024] 1-First motor; 10-Second motor; 11-Shock damping plate; 12-Fixing plate; 13-Double-ended bolt; 14-First through hole; 15-Second through hole; 16-Reinforcing rib; 2-Fixing mechanism; 20-First ring body; 21-Second ring body; 22-Through groove; 23-Slot; 24-Fixing block; 25-Arc plate; 26-Threaded hole; 27-Threaded rod; 28-Moving plate; 29-Groove; 201-Positioning groove; 202-Slide groove; 30-Moving rod; 301-Rough diameter section; 302-Small diameter section. Detailed Implementation

[0025] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.

[0026] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0027] like Figure 1-5 As shown, this utility model embodiment provides a coaxial motor fixing structure for a vertical take-off and landing aircraft, including a first motor 1, a second motor 10, a fixing plate 12, and a fixing mechanism 2;

[0028] In one embodiment, to facilitate improving the vibration damping effect of the first motor 1 and the second motor 10, and also to facilitate the fixing of the first motor 1 and the second motor 10 by the fixing plate 12, a damping plate 11 is fixedly connected to both the first motor 1 and the second motor 10. The fixing plate 12 has a first through hole 14. The fixing mechanism 2 includes a first ring 20 and a second ring 21 respectively fixedly connected to the damping plate 11. A fixing block 24 is fixedly connected to the first ring 20. An arc-shaped plate 25 is rotatably connected inside the fixing block 24. A movable plate 28 is rotatably connected to one side of the arc-shaped plate 25. The movable plate 28 is located away from the first ring 20. A movable rod 30 is rotatably connected to one side of the arc plate 25. The first ring body 20 is provided with a through groove 22 and a slot 23 for inserting the movable rod 30. In order to facilitate fixing the arc plate 25 to the first ring body 20, a threaded rod 27 is threadedly connected inside the arc plate 25. The first ring body 20 is provided with a threaded hole 26 for screwing the threaded rod 27 in. In order to facilitate the movable rod 30 to enter the second ring body 21, and also to allow the movable rod 30 to slide on the second ring body 21, a positioning groove 201 and a sliding groove 202 are symmetrically provided on the second ring body 21. The positioning groove 201 and the sliding groove 202 are connected.

[0029] In one embodiment, to facilitate the sliding of the narrow diameter portion 302 on the movable rod 30 out of the opening of the slide groove 202 by the movement of the movable rod 30, the movable rod 30 is provided with a large diameter portion 301 and a narrow diameter portion 302, which are alternately distributed on the movable rod 30. The outer diameter of the narrow diameter portion 302 on the movable rod 30 is in clearance fit with the groove width of the slide groove 202, and the outer contour of the narrow diameter portion 302 is adapted to the shape of the inner sidewall of the slide groove 202, so that the narrow diameter portion 302 can slide along the slide groove 202. The inner wall of 2 slides out toward the opening end; in order to facilitate the sliding of the coarse diameter portion 301 of the movable rod 30 on the inner wall of the through groove 22, slot 23 and positioning groove 201, the outer diameter of the coarse diameter portion 301 on the movable rod 30 is in tolerance fit with the inner diameter of the through groove 22, slot 23 and positioning groove 201, and the outer contour of the coarse diameter portion 301 is conjugately matched with the shape of the inner wall of the through groove 22, slot 23 and positioning groove 201, so that the coarse diameter portion 301 can slide and be guided along the inner wall of the through groove 22, slot 23 and positioning groove 201.

[0030] In one embodiment, in order to enable the first motor 1 and the second motor 10 to achieve coaxial drive and improve stability, the first ring body 20 is coaxially arranged with the first motor 1, and the second ring body 21 is coaxially arranged with the second motor 10. The inner surface of the inner ring of the first ring body 20 is closely fitted with the outer surface of the outer ring of the second ring body 21. In order to facilitate the fixing of the first motor 1 and the second motor 10 by the fixing plate 12, the first through hole 14 is a cylindrical hole, and the outer contour of the outer ring of the second ring body 21 is conjugately matched with the inner wall shape of the first through hole 14.

[0031] In one embodiment, in order to improve the stability of the connection between the first motor 1 and the second motor 10, and also to facilitate the installation of external fixing brackets through the reinforcing ribs 16, a number of double-ended bolts 13 are installed on the damping plate 11, and a second through hole 15 matching the number of double-ended bolts 13 is opened on the fixing plate 12. The double-ended bolts 13 are fixedly connected to the fixing plate 12 through the second through hole 15, and reinforcing ribs 16 are fixedly connected to both sides of the fixing plate 12. In order to prevent the arc plate 25 from touching the first ring body 20 when rotating, a groove 29 is opened on the inner side wall of the first ring body 20, and a clearance gap is formed between the side of the arc plate 25 near the groove 29 and the inner wall of the groove 29 along the rotation trajectory of the fixing block 24.

[0032] It should be noted that a rubber damping shock absorption mechanism is installed between the shock absorber plate 11 and the motor.

[0033] In operation, the operator first installs a damping plate 11 on the first motor 1 and the second motor 10. The second ring 21 on the damping plate 11 of the second motor 10 is inserted into the inner ring of the first ring 20 through the first through hole 14 on the fixing plate 12. The operator then pulls the arc plate 25 to adjust the position of the narrow diameter portion 302 on the movable rod 30, allowing the narrow diameter portion 302 to slide through the sliding groove 202 on the second ring 21 into the positioning groove 201. Simultaneously, the operator rotates the arc plate 25 to press one side against the outer surface of the first ring 20, thereby moving the movable plate 28 and pushing the movable rod 30. This causes the thicker diameter portions 301 at both ends of the movable rod 30 to slide into the symmetrical positioning grooves 20 on the second ring 21. In step 1, the arc-shaped plate 25 can be fixed to the first ring body 20 by tightening the threaded rod 27, so that the first motor 1 and the second motor 10 are fixed by the fixing plate 12. Then, the double-headed bolts 13 on the damping plates 11 of the first motor 1 and the second motor 10 are further tightened through the second through hole 15 on the fixing plate 12. At the same time, the reinforcing ribs 16 are installed on the fixing plate 12 to facilitate the external connection of the fixing bracket. When the first motor 1 and the second motor 10 need to be inspected or replaced, it is only necessary to remove the double-headed bolts 13, loosen the threaded rod 27, and pull the arc-shaped plate 25, so that the first motor 1 and the second motor 10 can be separated for inspection and replacement, thereby improving the convenience of disassembling and installing motors.

[0034] In the description of this utility model, it should be noted that when an element is referred to as "fixed to" or "set on" another element, it can be directly or indirectly on the other element. When an element is referred to as "connected to" another element, it can be directly or indirectly connected to the other element. Terms such as "center," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationships commonly used when the product is in use. They are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, terms such as "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. Thus, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "multiple" means two or more, unless otherwise explicitly specified. "Several" means one or more, unless otherwise explicitly specified.

[0035] It should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0036] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this utility model, and these should all be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A coaxial motor fixing structure for a vertical takeoff and landing aircraft, characterized in that: It includes a first motor (1), a second motor (10), a fixing plate (12), and a fixing mechanism (2); Both the first motor (1) and the second motor (10) are fixedly connected to a shock-absorbing plate (11), and the fixed plate (12) is provided with a first through hole (14). The fixing mechanism (2) includes a first ring (20) and a second ring (21) fixedly connected to the damping plate (11). A fixing block (24) is fixedly connected to the first ring (20). An arc plate (25) is rotatably connected inside the fixing block (24). A movable plate (28) is rotatably connected to one side of the arc plate (25). A movable rod (30) is rotatably connected to the side of the movable plate (28) away from the arc plate (25). A through groove (22) and a slot (23) for inserting the movable rod (30) are respectively opened on the first ring (20). A threaded rod (27) is threadedly connected inside the arc plate (25). A threaded hole (26) for screwing the threaded rod (27) is opened on the first ring (20). A positioning groove (201) and a sliding groove (202) are symmetrically opened on the second ring (21). The positioning groove (201) and the sliding groove (202) are connected.

2. The coaxial motor fixing structure for a vertical takeoff and landing aircraft according to claim 1, characterized in that: The movable rod (30) is provided with a large diameter portion (301) and a small diameter portion (302). The large diameter portion (301) and the small diameter portion (302) are alternately distributed on the movable rod (30). The outer diameter of the small diameter portion (302) on the movable rod (30) is in clearance fit with the groove width of the slide (202), and the outer contour of the small diameter portion (302) is adapted to the shape of the inner sidewall of the slide (202), so that the small diameter portion (302) can slide out along the inner sidewall of the slide (202) toward the opening end.

3. The coaxial motor fixing structure for a vertical takeoff and landing aircraft according to claim 2, characterized in that: The outer diameter of the coarse diameter portion (301) on the movable rod (30) is in tolerance fit with the inner diameter of the through groove (22), the slot (23) and the positioning groove (201), and the outer contour of the coarse diameter portion (301) is conjugately matched with the inner wall shape of the through groove (22), the slot (23) and the positioning groove (201), so that the coarse diameter portion (301) can slide and be guided along the inner wall of the through groove (22), the slot (23) and the positioning groove (201).

4. The coaxial motor fixing structure for a vertical takeoff and landing aircraft according to claim 1, characterized in that: The first ring (20) is coaxially arranged with the first motor (1), and the second ring (21) is coaxially arranged with the second motor (10). The inner surface of the inner ring of the first ring (20) is closely attached to the outer surface of the outer ring of the second ring (21).

5. The coaxial motor fixing structure for a vertical takeoff and landing aircraft according to claim 1, characterized in that: The first through hole (14) is a cylindrical hole, and the outer contour of the outer ring of the second ring body (21) is conjugately matched with the inner wall shape of the first through hole (14).

6. The coaxial motor fixing structure for a vertical takeoff and landing aircraft according to claim 1, characterized in that: The damping plate (11) is equipped with a number of double-headed bolts (13), and the fixing plate (12) is provided with a second through hole (15) matching the number of double-headed bolts (13). The double-headed bolts (13) are fixedly connected to the fixing plate (12) through the second through hole (15). Reinforcing ribs (16) are fixedly connected to both sides of the fixing plate (12).

7. The coaxial motor fixing structure for a vertical takeoff and landing aircraft according to claim 4, characterized in that: The inner wall of the first ring body (20) is provided with a groove (29), and the side of the arc plate (25) near the groove (29) forms a clearance gap with the inner wall of the groove (29) along the rotation trajectory of the fixed block (24).

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