Ratchet wheel paddle locking mechanism of EVTOL motor

Abstract

The invention discloses a ratchet wheel propeller locking mechanism of an EVTOL motor, and relates to the technical field of propellers, the ratchet wheel propeller locking mechanism comprises a quick release structure, the quick release structure comprises a torsion shaft, a reset spring, a ratchet wheel and a blocking piece, the torsion shaft is used for being sleeved with the propeller, the reset spring and the ratchet wheel are both sleeved with the circumference of the torsion shaft, and the reset spring is located below the ratchet wheel; the ratchet wheel and the blocking piece are used for abutting against the bottom face and the top face of the propeller, and the blocking piece is detachably connected to the top end of the torsion shaft. The fixing structure comprises a first screw, a paddle seat and a plurality of pawls, the paddle seat is arranged at the bottom of the torsion shaft in a sleeved mode, the first screw is sequentially arranged in the paddle seat and the torsion shaft in a penetrating mode and is in threaded connection with the torsion shaft, the paddle seat is provided with a plurality of pawl grooves, and the pawls are clamped in the pawl grooves in a one-to-one correspondence mode and meshed with the ratchet wheel. The bolt has the advantages that the bolt can be quickly disassembled and replaced conveniently, and meanwhile, the bolt has a better anti-loosening and anti-falling function.

Description

Technical Field

[0001] The present invention relates to the technical field of propellers, and in particular to a ratchet propeller locking mechanism for an EVTOL motor. Background Art

[0002] EVTOL (Electric Vertical Take-Off and Landing) aircraft combine the vertical take-off and landing capabilities of a helicopter with the efficient cruising performance of a fixed-wing aircraft. Its motor technology is central to its functionality. The propellers on an EVTOL aircraft are crucial components and the primary source of power. The propeller locking mechanism is crucial for securing the propellers securely on the aircraft. High-speed propeller rotation generates significant centrifugal force and vibration, and the locking mechanism must be able to withstand these forces to prevent the propellers from loosening or falling off during flight.

[0003] Current propellers all feature a detachable connection, allowing them to be removed for inspection and maintenance, storage, or replacement. Existing propeller locking mechanisms typically fall into several categories: nut locking, snap ring locking, and quick-release locking. Nut locking secures the propeller to the shaft by installing a locking nut on the propeller shaft end, which then engages the threads of the nut and shaft end. Snap ring locking utilizes the elastic deformation of the snap ring to lock the propeller. Quick-release locking allows for rapid installation and removal of the propeller, typically employing a special clip or locking device. While quick-release locking facilitates faster propeller maintenance and replacement, current quick-release locking mechanisms primarily rely on threaded locking or a combination of a snap-lock mechanism and threads. Threaded locking often uses washers to prevent loosening, but this method relies on the preload provided by the threads to increase friction and does not guarantee effective anti-loosening or anti-slip properties.

[0004] In summary, a propeller locking structure with better anti-loosening and anti-falling functions is needed. Summary of the Invention

[0005] In order to solve the above technical problems, the present invention provides a ratchet propeller locking mechanism for an EVTOL motor, which is convenient for quick disassembly and replacement of propellers and has better anti-loosening and anti-falling functions.

[0006] The present invention provides a ratchet propeller locking mechanism for an EVTOL motor, comprising: A quick-release structure comprising a torsion shaft, a return spring, a ratchet, and a stopper, wherein the torsion shaft is adapted to be sleeved within the propeller, the return spring and the ratchet are both sleeved around the circumference of the torsion shaft, the return spring is located below the ratchet, the ratchet and the stopper are adapted to abut against the bottom and top surfaces of the propeller, and the stopper is detachably connected to the top end of the torsion shaft; The fixing structure includes a first screw, a paddle seat, and a plurality of pawls. The paddle seat is mounted on the bottom of the torsion shaft. The first screw is sequentially inserted into the paddle seat and the torsion shaft and is threadedly connected to the torsion shaft. The paddle seat is provided with a plurality of pawl grooves. The plurality of pawls are correspondingly mounted in the plurality of pawl grooves, and the plurality of pawls are respectively engaged with the ratchet wheels.

[0007] Preferably, the torsion shaft includes a square shaft section and a round shaft section, the return spring and the ratchet are both sleeved on the square shaft section, the round shaft section is used to be sleeved in the propeller, and the stopper is detachably connected to the top end of the round shaft section.

[0008] Preferably, the blocking member comprises: a pressure plate, which is sleeved on the circular shaft segment, wherein a first slot is formed on a top surface of the pressure plate, and a bottom surface of the pressure plate is used to abut against a top surface of the propeller; An anti-dropout pin is clamped in the first clamping groove. A pin hole is horizontally opened on the top of the circular shaft segment, and the anti-dropout pin is inserted into the pin hole.

[0009] Preferably, a plurality of first anti-slip grooves are provided on the bottom surface of the pressing plate.

[0010] Preferably, a plurality of second anti-slip grooves are formed on the top surface of the ratchet.

[0011] Preferably, the paddle seat comprises: A chassis is provided with a positioning screw hole, and a plurality of the ratchet grooves are provided in a circular array on the chassis; An unlocking ring is mounted on the chassis, a limiting hole is formed on the unlocking ring, the limiting hole corresponds to the positioning screw hole, the first screw is sequentially inserted into the chassis and the unlocking ring, and the ratchet is mounted on the unlocking ring and the chassis; The limiting screw is sequentially inserted into the limiting hole and the positioning screw hole, and the limiting screw is threadedly connected to the positioning screw hole.

[0012] Preferably, it also includes: The limiting sleeve is sleeved in the limiting hole, and the limiting screw is passed through the limiting sleeve.

[0013] Preferably, it also includes: A plurality of shift teeth are arranged in a ring array in the unlocking ring, a plurality of second slots are opened on the chassis, the plurality of shift teeth are correspondingly mounted in the plurality of second slots, the plurality of second slots correspond one-to-one to the plurality of pawl slots, and one end of the second slot is connected to the pawl slot; Multiple V-shaped springs, multiple third slots are opened on the chassis in a circular array, multiple V-shaped springs are mounted in the multiple third slots one by one, multiple third slots correspond one by one to multiple pawl slots, and the third slots are connected to the pawl slots, one end of the V-shaped spring abuts against the side wall of the third slot, and the other end of the V-shaped spring abuts against the side wall of the pawl.

[0014] Preferably, it also includes: A plurality of second screws are respectively sleeved in the plurality of V-shaped springs, and the second screws are threadedly connected to the bottom of the third slot.

[0015] Compared with the prior art, the present invention discloses a ratchet lock propeller mechanism for an EVTOL motor, which has the following beneficial effects: This device includes a quick-release structure and a fixed structure to secure the propeller and prevent it from loosening. The quick-release structure also facilitates rapid removal of the propeller for repair, replacement, and other operations. First, the quick-release structure uses a return spring to squeeze the ratchet and stopper, allowing them to clamp the upper and lower ends of the propeller, achieving initial anti-loosening. Second, the meshing pawl and ratchet engage the unidirectional teeth on the ratchet, preventing it from rotating in the opposite direction. This unidirectional motion effectively prevents loosening, and the first screw secures the propeller seat to the bottom of the torque shaft, making the connection more stable, thereby effectively securing the propeller and preventing loosening. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 A perspective view of the present invention; Figure 2 It is a schematic diagram of the explosion of the structure of the present invention; Figure 3 is a cross-sectional view of the present invention; Figure 4 Schematic diagram of the top surface structure of the pressing plate of the present invention; Figure 5 Schematic diagram of the bottom structure of the pressing plate of the present invention; Figure 6 Schematic diagram of the structure of the ratchet of the present invention; Figure 7 Schematic diagram of the structure of the torsion shaft of the present invention; Figure 8 Schematic diagram of the bottom structure of the torsion shaft of the present invention; Figure 9 It is a structural schematic diagram of the limiting sleeve of the present invention; Figure 10 This is a schematic diagram of the top surface structure of the unlocking ring of the present invention; Figure 11 This is a schematic diagram of the bottom structure of the unlocking ring of the present invention; Figure 12 Schematic diagram of the structure of the pawl of the present invention; Figure 13 Schematic diagram of the top surface structure of the chassis of the present invention; Figure 14 It is a schematic diagram of the bottom structure of the chassis of the present invention.

[0018] Reference numerals: 100—quick-release structure, 200—fixing structure, 101—anti-drop pin, 102—pressure plate, 103—propeller, 104—ratchet, 105—reset spring, 106—torsion shaft, 1021—first slot, 1022—first anti-slip slot, 1041—second anti-slip slot, 1042—square shaft hole, 1043—tooth, 1061—pin hole, 1062—square shaft segment, 1063—round shaft segment, 1064—threaded hole, 201—limiting screw, 202—limiting sleeve, 203—unlocking ring, 204—second screw, 205—V-shaped spring, 206—pawl, 207—chassis, 208—first screw, 2031—limiting hole, 2032—shifting tooth, 2071—pawl slot, 2072—positioning screw hole, 2073—screw hole. DETAILED DESCRIPTION

[0019] A specific embodiment of the present invention is described in detail below with reference to the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific embodiment.

[0020] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the technical solution of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0021] In the description of the present invention, it should be noted that, unless otherwise specified or limited, the term "connection" should be understood in a broad sense. For example, it can mean a fixed connection, a detachable connection, or an integral connection; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean internal communication between two components. For those skilled in the art, the specific meanings of the above terms in this application can be understood by those skilled in the art in specific circumstances.

[0022] Additionally, in the description of the present invention, "plurality" refers to two or more than two. The terms "first" and "second" are used for descriptive purposes only and should not be understood to imply or suggest relative importance or implicitly indicate the number of technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include one or more of the features.

[0023] Example 1 The embodiment of the present invention provides a ratchet lock propeller mechanism of an EVTOL motor. Figure 1 、 Figure 3 As shown, it includes: a quick-release structure 100 and a fixed structure 200. The quick-release structure 100 facilitates the rapid removal of the propeller 103 for repair, replacement, etc. Figure 2 As shown, the quick-release structure 100 includes a torsion shaft 106, a return spring 105, a ratchet 104 and a stopper. The torsion shaft 106 is used to be sleeved in the propeller 103. The propeller 103 includes a plurality of blades connected to the connecting shaft, that is, the connecting shaft is sleeved on the circumference of the torsion shaft 106, the return spring 105 and the ratchet 104 are both sleeved on the circumference of the torsion shaft 106, the return spring 105 is located below the ratchet 104, and the circumference of the ratchet 104 is provided with unidirectional teeth 1043, the ratchet 104 and the stopper are respectively used to abut the bottom and top surfaces of the propeller 103, that is, to abut the two ends of the connecting shaft, and the stopper is detachably connected to the top end of the torsion shaft 106. The detachable connection can be a threaded connection or a clamping connection or other detachable connection methods; the fixed structure 200 cooperates with the quick-release structure 100 to lock the propeller 103, as shown in FIG. Figure 2 As shown, the fixing structure 200 includes a first screw 208, a paddle seat, and a plurality of pawls 206. The paddle seat is located at the bottom of the torsion shaft 106. The first screw 208 is sequentially inserted into the paddle seat and the torsion shaft 106 and is threadedly connected to the torsion shaft 106. Figure 8As shown, the bottom of the torsion shaft 106 is provided with a threaded hole 1064, which facilitates the insertion of a first screw 208 into the threaded hole 1064 and tightening. The propeller seat can be fixed to the bottom of the torsion shaft 106 by the first screw 208 to achieve the first step of fixing and preventing the propeller 103 from loosening. At the same time, the propeller seat is provided with a plurality of pawl grooves 2071, and a plurality of pawls 206 are correspondingly mounted in the plurality of pawl grooves 2071. The ratchet 104 is mounted in the propeller seat, and the plurality of pawls 206 are respectively engaged with the ratchet 104. The engagement of the pawls 206 and the ratchet 104 further achieves the fixing and preventing of the propeller 103. The device includes a quick-release structure 100 and a fixed structure 200, which can fix and prevent the propeller 103 from loosening. At the same time, the quick-release structure 100 also facilitates the rapid removal of the propeller 103 for maintenance, replacement, and other operations. First, the quick-release structure 100 utilizes the return spring 105 to squeeze the ratchet 104 and the stopper, allowing them to clamp the upper and lower ends of the propeller 103, achieving preliminary anti-loosening. Secondly, through the meshing of the pawl 206 and the ratchet 104, the pawl 206 can clamp the unidirectional teeth 1043 on the ratchet 104, preventing it from rotating in the opposite direction. This unidirectional motion characteristic can effectively prevent loosening, and the propeller seat can be fixed to the bottom of the torsion shaft 106 by the first screw 208, making the connection more stable, thereby achieving a better fixation and anti-loosening effect on the propeller 103. In summary, this device can be quickly disassembled and replaced conveniently, while also having better anti-loosening and anti-detachment functions.

[0024] This embodiment provides a specific structure of a torsion shaft 106, such as Figure 7 、 Figure 8 As shown, further, the torsion shaft 106 includes a square shaft section 1062 and a round shaft section 1063, and the return spring 105 and the ratchet 104 are both sleeved on the square shaft section 1062, as shown in FIG. Figure 6 As described above, a square shaft hole 1042 is provided in the middle of the ratchet 104 to facilitate its insertion onto the square shaft section 1062. The provision of the square shaft section 1062 further prevents the ratchet 104 from rotating and transmitting torque, thereby providing a better anti-loosening effect. The round shaft section 1063 is adapted to be inserted into the propeller 103. The round shaft section 1063 can circumferentially mate with the connecting shaft of the propeller 103, and a stopper can be detachably connected to the top of the round shaft section 1063. This embodiment provides a structure for a torsion shaft 106, wherein the ratchet 104, which is engaged with the pawl 206, is inserted onto the square shaft section 1062, thereby further preventing the ratchet 104 from rotating and providing a better anti-loosening effect.

[0025] This embodiment provides a specific structure of a blocking member, such as Figure 2 As shown, further, the blocking member includes: a pressure plate 102 and an anti-drop pin 101. The pressure plate 102 is sleeved on the circular shaft segment 1063, as shown in FIG. Figure 4As shown, the top surface of the pressure plate 102 is provided with a first slot 1021, and the bottom surface of the pressure plate 102 is used to abut the top surface of the propeller 103. The pressure plate 102 is a circular plate, and a circular hole is provided in the middle of the pressure plate 102 to facilitate fitting on the circular shaft segment 1063; the anti-drop pin 101 is mounted in the first slot 1021, as shown in FIG. Figure 7 As shown, a pin hole 1061 is horizontally formed through the top of the circular shaft segment 1063, and the anti-dropout pin 101 is inserted into the pin hole 1061. When connecting the stopper to the top of the circular shaft segment 1063, first, the pressure plate 102 is placed on the circular shaft segment 1063, and the elastic force of the return spring 105 is used to press the pressure plate 102 downward until it leaks out of the pin hole 1061 on the circular shaft segment 1063. The anti-dropout pin 101 is inserted into the pin hole 1061, and then the anti-dropout pin 101 is clamped into the first clamping groove 1021, thereby completing the detachable connection of the stopper. In order to clamp the anti-dropout pin 101, the first clamping groove 1021 just matches the anti-dropout pin 101 and clamps it. A spring can also be provided at one end of the first clamping groove 1021, and the elastic force of the spring can be used to further clamp the anti-dropout pin 101.

[0026] Further, such as Figure 5 As shown, the bottom surface of the pressing plate 102 is provided with a plurality of first anti-slip grooves 1022, such as Figure 6 As shown, the top surface of the ratchet 104 is provided with a plurality of second anti-slip grooves 1041. As described above, the elastic force of the return spring 105 allows the pressure plate 102 and the ratchet 104 to clamp the upper and lower ends of the propeller 103. The first anti-slip grooves 1022 are provided on the bottom surface of the pressure plate 102, and the second anti-slip grooves 1041 are provided on the top surface of the ratchet 104 to increase the frictional contact with the propeller 103, thereby further clamping the propeller 103 and preventing it from loosening.

[0027] Example 2 As a further improvement on the basis of Example 1, Figure 2 As shown, this embodiment provides a specific structure of a paddle seat. Further, the paddle seat includes: a chassis 207, an unlocking ring 203, a limiting sleeve 202, and a limiting screw 201. Figure 13 As shown, a positioning screw hole 2072 is provided on the chassis 207, and a plurality of ratchet grooves 2071 are provided on the chassis 207 in a circular array. Figure 14 As shown, a screw hole 2073 is provided at the center of the bottom of the chassis 207 to facilitate the first screw 208 to penetrate and be threadedly connected to the torsion shaft 106. At the same time, a connection hole for connecting the motor is also provided on the chassis 207. Figure 12 As shown, multiple pawls 206 are correspondingly matched and mounted in multiple pawl slots 2071; Figure 10As shown, the unlocking ring 203 is sleeved on the chassis 207, and a limiting hole 2031 is provided on the unlocking ring 203, and the limiting hole 2031 corresponds to the positioning screw hole 2072. The first screw 208 is sequentially inserted into the chassis 207 and the unlocking ring 203, and the ratchet 104 is sleeved in the unlocking ring 203 and the chassis 207. Specifically, the unlocking ring 203 is annular, and a circular groove is provided in the middle of the chassis 207. The circular groove does not pass through the bottom of the chassis 207. After installation, the ratchet 104 is correspondingly mounted in the inner ring of the unlocking ring 203 and the circular groove, so that the circumferential teeth 1043 of the ratchet 104 correspond to the positions of the multiple pawls 206, so that the pawls 206 can clamp the teeth 1043; the limiting sleeve 202 is sleeved in the limiting hole 2031, as shown in FIG. Figure 9 As shown, the bottom end of the limiting sleeve 202 has a small diameter and can be sleeved in the limiting hole 2031. The head diameter of the limiting sleeve 202 is larger and can be stuck in the limiting hole 2031, which is convenient for limiting the limiting screw 201. The limiting sleeve 202 is used to realize the rotation of the unlocking ring 203, which is convenient for disassembly. If it is the limiting sleeve 202, the limiting screw 201 will directly press the unlocking ring 203 to death and cannot rotate, and the function of rotating unlocking and locking will be lost. The limiting sleeve 202 is made of metal to avoid deformation; the limiting screw 201 is sequentially inserted into the limiting sleeve 202, the limiting hole 2031 and the positioning screw hole 2072, and the limiting screw 201 is threadedly connected to the positioning screw hole 2072. The paddle mount in this embodiment includes a chassis 207 and an unlocking ring 203, which are detachably connected via a set screw 201. Unlocking ring 203, like a cover, can be placed around chassis 207 to protect the structures on chassis 207. Chassis 207 and unlocking ring 203 form a cavity, which is used to mount structures such as pawl 206. In this embodiment, two symmetrical positioning screw holes 2072 are provided, and two set screws 202, set holes 2031, and set screws 201 are each provided, ensuring a secure connection between chassis 207 and unlocking ring 203.

[0028] In order to facilitate the disassembly of the paddle seat, it further includes: a shifting tooth 2032 and a V-shaped spring 205. Figure 11As shown, a plurality of shift teeth 2032 are arranged in an annular array in the unlocking ring 203, the shift teeth 2032 are located at the bottom of the unlocking ring 203, and a plurality of second card slots are opened on the chassis 207. The plurality of shift teeth 2032 are correspondingly mounted in the plurality of second card slots, and the plurality of second card slots correspond to the plurality of pawl slots 2071 one by one, and one end of the second card slot is connected to the pawl slot 2071, and the shift teeth 2032 are located in front of the pawl 206 after being mounted in the second card slot; the chassis 207 is annular A plurality of third slots are provided in a shaped array, and a plurality of V-shaped springs 205 are mounted in the plurality of third slots in a one-to-one correspondence. The plurality of third slots correspond to the plurality of pawl slots 2071 in a one-to-one correspondence, and the third slots are connected to the pawl slots 2071. After being mounted in the third slots, the V-shaped spring 205 is located behind the pawl 206. One end of the V-shaped spring 205 abuts against the side wall of the third slot, and the other end of the V-shaped spring 205 abuts against the side wall of the pawl 206. The V-shaped spring 205 is similar to a dovetail clip. Figure 2 、 Figure 13 As shown, in order to facilitate disassembly and disengage the pawl 206 from the ratchet 104, this embodiment provides a plurality of shifting teeth 2032 and V-shaped springs 205 corresponding to the pawl 206. During disassembly, the unlocking ring 203 is rotated to rotate the shifting tooth 2032 toward the end connected to the second slot and the pawl groove 2071. Because the shifting tooth 2032 is located on the front side of the pawl 206, the pawl 206 can be squeezed inwardly under the elastic force of the V-shaped spring 205 when the shifting tooth 2032 rotates, so that the pawl 206 is retracted into the pawl groove 2071, so that the pawl 206 is separated from the circumferential teeth 1043 of the ratchet 104, thereby facilitating the separation of the quick-release structure 100 and the fixed structure 200, thereby facilitating subsequent disassembly. In addition, during installation, the elastic force of the V-shaped spring 205 can be used to reset the pawl 206 and clamp the circumferential teeth 1043 of the ratchet 104 , thereby making the pawl 206 mesh with the ratchet 104 .

[0029] Furthermore, it also includes: multiple second screws 204 are respectively inserted into multiple V-shaped springs 205, and the second screws 204 are threadedly connected to the bottom of the third slot. In order to prevent the V-shaped spring 205 from shifting, this embodiment guides the V-shaped spring 205 by making the V-shaped spring 205 be inserted around the circumference of the second screw 204.

[0030] Among them, the other structures of this embodiment are consistent with those of Example 1, and are just optimizations made to Example 1.

[0031] According to the above embodiment, the assembly sequence of the quick-release structure 100 is as follows: 1. Install the return spring 105 on the torsion shaft 106; 2. Insert the torque shaft 106 into the ratchet 104 so that the square shaft section 1062 fits into the square shaft hole 1042 on the ratchet 104. After assembly, make sure the second anti-slip groove 1041 faces upward. 3. Insert the propeller 103 and the pressure plate 102 onto the circular shaft segment 1063 in sequence, with the first anti-slip groove 1022 facing downward; 4. Press the pressure plate 102 downward to compress the return spring 105 and let it leak out of the pin hole 1061. Install the anti-drop pin 101 into the pin hole 1061 and make it match with the first slot 1021. Release the pressing plate 102 to reset the return spring 105, completing the assembly of the quick-release structure 100.

[0032] The assembly sequence of the fixed structure 200 is as follows: 1. Install the multiple pawls 206 into the multiple pawl slots 2071 on the chassis 207 in sequence; 2. Install the multiple V-shaped springs 205 into the multiple third slots on the chassis 207 in sequence; 3. Pass multiple second screws 204 through multiple V-shaped springs 205 in sequence and then connect them to the bottom of the third slot through threads, and tighten the second screws 204; 4. Align the limiting hole 2031 on the unlocking ring 203 with the positioning screw hole 2072 on the chassis 207, and align the multiple shifting teeth 2032 with the multiple second slots so that the multiple shifting teeth 2032 are inserted into the multiple second slots; 5. Insert the limiting sleeve 202 into the limiting hole 2031; 6. Insert the limiting screw 201 through the limiting sleeve 202 and the limiting hole 2031 in sequence, and then insert it into the positioning screw hole 2072, and tighten the limiting screw 201; 7. Insert the first screw 208 into the chassis 207 through the screw hole 2073 of the chassis 207 to complete the assembly of the fixing structure 200.

[0033] The assembly sequence of the quick-release structure 100 and the fixed structure 200 is as follows: 1. Before assembly, fix the fixing structure 200 on the required motor; 2. Rotate the unlocking ring 203 to retract the pawl 206 into the pawl groove 2071; 3. Install the ratchet 104 into the chassis 207 and loosen the rotating unlocking ring 203 so that the teeth 1043 on the circumference of the ratchet 104 engage with the pawl 206; 4. Thread the first screw 208 into the torsion shaft 106 and tighten the first screw 208 to complete the assembly of the quick-release structure 100 and the fixed structure 200 .

[0034] The disassembly sequence of the quick-release structure 100 and the fixed structure 200 is as follows: 1. Rotate the unlocking ring 203 to retract the pawl 206 into the pawl groove 2071; 2. Rotate the quick-release structure 100 in the opposite direction of installation until it is completely unscrewed, completing the disassembly of the quick-release structure 100 and the fixed structure 200.

[0035] The advantage of the present invention is that the device includes a quick-release structure and a fixed structure to secure the propeller and prevent it from loosening. At the same time, the quick-release structure also facilitates rapid removal of the propeller for maintenance, replacement, and other operations. First, the quick-release structure uses a return spring to squeeze the ratchet and the stopper, so that they can clamp the upper and lower ends of the propeller to achieve initial anti-loosening. Secondly, through the meshing pawl and ratchet, the pawl can clamp the unidirectional teeth on the ratchet to prevent it from rotating in the opposite direction. This unidirectional motion characteristic can effectively prevent loosening. In addition, the propeller seat can be fixed to the bottom of the torsion shaft by the first screw, making the connection more stable, thereby achieving better fixation and anti-loosening of the propeller.

[0036] The above disclosures are only a few specific embodiments of the present invention. However, the embodiments of the present invention are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the scope of protection of the present invention.

Claims

1. A ratchet lock propeller mechanism for an EVTOL motor, characterized in that: include: A quick-release structure (100) comprises a torsion shaft (106), a return spring (105), a ratchet (104) and a stopper, wherein the torsion shaft (106) is used to be sleeved inside a propeller (103), the return spring (105) and the ratchet (104) are both sleeved around the torsion shaft (106), the return spring (105) is located below the ratchet (104), the ratchet (104) and the stopper are used to abut against the bottom surface and the top surface of the propeller (103), and the stopper is detachably connected to the top end of the torsion shaft (106); The fixing structure (200) comprises a first screw (208), a paddle seat, and a plurality of ratchets (206), wherein the paddle seat is mounted on the bottom of the torsion shaft (106), the first screw (208) is sequentially passed through the paddle seat and the torsion shaft (106) and is threadedly connected to the torsion shaft (106), a plurality of ratchet grooves (2071) are provided in the paddle seat, the plurality of ratchet grooves (2071) are correspondingly mounted in the plurality of ratchet grooves (2071), and the plurality of ratchet grooves (206) are respectively engaged with the ratchet wheel (104).

2. The ratchet lock propeller mechanism of an EVTOL motor according to claim 1, characterized in that: The torsion shaft (106) comprises a square shaft section (1062) and a round shaft section (1063); the return spring (105) and the ratchet (104) are both mounted on the square shaft section (1062); the round shaft section (1063) is used to be mounted inside the propeller (103); and the stopper is detachably connected to the top end of the round shaft section (1063).

3. The ratchet lock propeller mechanism of an EVTOL motor according to claim 2, characterized in that: The blocking member comprises: A pressure plate (102) is sleeved on the circular shaft segment (1063), a first slot (1021) is provided on the top surface of the pressure plate (102), and a bottom surface of the pressure plate (102) is used to abut against the top surface of the propeller (103); The anti-dropout pin (101) is clamped in the first clamping groove (1021). A pin hole (1061) is horizontally opened through the top of the circular shaft section (1063), and the anti-dropout pin (101) is inserted into the pin hole (1061).

4. The ratchet lock propeller mechanism of an EVTOL motor according to claim 3, characterized in that: A plurality of first anti-slip grooves (1022) are provided on the bottom surface of the pressing plate (102).

5. The ratchet lock propeller mechanism of an EVTOL motor according to claim 1, characterized in that: A plurality of second anti-slip grooves (1041) are provided on the top surface of the ratchet (104).

6. The ratchet lock propeller mechanism of an EVTOL motor according to claim 1, characterized in that: The paddle seat comprises: A chassis (207) is provided with a positioning screw hole (2072), and a plurality of ratchet grooves (2071) are provided in a circular array on the chassis (207); An unlocking ring (203) is mounted on the chassis (207); a limiting hole (2031) is provided on the unlocking ring (203); the limiting hole (2031) corresponds to the positioning screw hole (2072); the first screw (208) is sequentially inserted into the chassis (207) and the unlocking ring (203); and the ratchet (104) is mounted on the unlocking ring (203) and the chassis (207); The limiting screw (201) is sequentially inserted into the limiting hole (2031) and the positioning screw hole (2072), and the limiting screw (201) is threadedly connected to the positioning screw hole (2072).

7. The ratchet lock propeller mechanism of an EVTOL motor according to claim 6, characterized in that: Also includes: The limiting sleeve (202) is sleeved in the limiting hole (2031), and the limiting screw (201) is passed through the limiting sleeve (202).

8. The ratchet lock propeller mechanism of an EVTOL motor according to claim 6, characterized in that: Also includes: A plurality of shifting teeth (2032) are arranged in an annular array in the unlocking ring (203); a plurality of second card slots are provided on the chassis (207); the plurality of shifting teeth (2032) are correspondingly mounted in the plurality of second card slots; the plurality of second card slots correspond to the plurality of pawl slots (2071) in a one-to-one manner, and one end of the second card slot is connected to the pawl slot (2071); A plurality of V-shaped springs (205) are provided on the chassis (207) in a circular array, the plurality of V-shaped springs (205) are mounted in the plurality of third slots in a one-to-one correspondence, the plurality of third slots correspond to the plurality of pawl slots (2071) in a one-to-one correspondence, and the third slots are connected to the pawl slots (2071), one end of the V-shaped spring (205) abuts against the side wall of the third slot, and the other end of the V-shaped spring (205) abuts against the side wall of the pawl (206).

9. The ratchet lock propeller mechanism of an EVTOL motor according to claim 8, characterized in that: Also includes: A plurality of second screws (204) are respectively sleeved in the plurality of V-shaped springs (205), and the second screws (204) are threadedly connected to the bottom of the third slot.

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