Paddle locking device and electric aircraft

Abstract

The utility model relates to the technical field of electric aircraft propeller locking, in particular to a propeller locking device and an electric aircraft, the propeller locking device comprises a stator assembly and a rotor assembly, the stator assembly comprises a permanent magnet and a magnetic supply component, the magnetic supply component is used for magnetizing or demagnetizing the permanent magnet, and the rotor assembly comprises a magnetic conductive column. The permanent magnet can be magnetized through the arranged magnetism supply component, so that the permanent magnet has magnetism and attracts the magnetic conductive column arranged opposite to the permanent magnet, the magnetic conductive column cannot rotate relative to the permanent magnet, and the permanent magnet is connected to the fixed part of the driving motor, so that the rotating part of the driving motor connected with the magnetic conductive column cannot rotate; compared with a traditional propeller locking mode, the propeller locking method has the advantages that the driving motor does not need to be powered on continuously, so that the driving motor does not generate heat continuously for a long time, the electric quantity of a battery is saved, and the cruising ability is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to electric airplane lock propeller technical field, concretely relates to a lock propeller device and electric airplane. BACKGROUND

[0002] In recent years, the new energy industry has developed rapidly, and the electric airplane for low-altitude travel has become a forward-looking research and development topic of major manufacturers, but the airplane propeller locking function has been a pain point problem of major manufacturers.

[0003] At present, the mainstream way of the electric airplane propeller locking function is to increase the propeller locking program on the software, to make the stator in the fixed part of the driving motor generate a fixed magnetic field by passing direct current to two phases in the three-phase permanent magnet synchronous driving motor, the magnetic field is attracted to the magnetic field of the rotor in the rotating part of the driving motor, to ensure that the rotor is locked and does not move, and then the propeller connected with the rotating part of the driving motor is locked.

[0004] But this method will cause the driving motor to be continuously powered, on the one hand, it will cause the driving motor to continuously heat for a long time, on the other hand, it will consume the battery power for providing power to the driving motor, affecting the endurance. INVENTION CONTENTS

[0005] (I) The problem to be solved by the utility model is how to save battery power without affecting the endurance.

[0006] (II) TECHNICAL SCHEME

[0007] The utility model provides a lock propeller device for locking the propeller connected with the rotating part of the driving motor in the electric airplane, which comprises a stator assembly and a rotor assembly.

[0008] The stator assembly comprises a permanent magnet and a magnetic supply member, the permanent magnet is connected to the fixed part of the driving motor, and the magnetic supply member is used for magnetizing or demagnetizing the permanent magnet.

[0009] The rotor assembly comprises a magnetic guide column, the magnetic guide column is connected to the rotating part of the driving motor, and the magnetic guide column is arranged opposite to the permanent magnet.

[0010] According to one embodiment of the utility model, the magnetic supply member comprises a power supply and a magnetic change coil, and the magnetic change coil is wound around the circumferential side of the permanent magnet.

[0011] The power supply is electrically connected with the magnetic change coil and is used for providing forward current or reverse current for the magnetic change coil.

[0012] According to one embodiment of the utility model, the stator assembly further comprises a first ring plate, and the permanent magnet is connected to the first ring plate.

[0013] The rotor assembly further comprises a second ring plate, and the magnetic conducting column is connected to the second ring plate.

[0014] The first ring plate is fixedly connected to a fixed part of the driving motor, and the second ring plate is connected to a rotating part of the driving motor.

[0015] According to an embodiment of the utility model, the rotor assembly is slidably connected to the rotating part of the driving motor through a guide piece, and the guide piece is used for guiding the magnetic conducting column to move only in a direction close to or away from the permanent magnet.

[0016] According to an embodiment of the utility model, an inner side wall of the second ring plate is attached to an outer side wall of the rotating part of the driving motor.

[0017] The guide piece comprises a sliding groove formed on the inner side wall of the second ring plate.

[0018] An outer side wall of the rotating part of the driving motor is fixedly connected with a sliding block, and the sliding block is slidably connected to the sliding groove.

[0019] According to an embodiment of the utility model, the propeller locking device further comprises a spring, one end of the spring is connected to the second ring plate, and the other end of the spring is connected to the rotating part of the driving motor.

[0020] According to an embodiment of the utility model, the propeller locking device further comprises an auxiliary limiting assembly, and the auxiliary limiting assembly is used for limiting rotation of the rotating part of the driving motor.

[0021] According to an embodiment of the utility model, the auxiliary limiting assembly comprises a locking column fixedly connected to the first ring plate.

[0022] A locking hole adapted to the locking column is formed on the second ring plate.

[0023] According to an embodiment of the utility model, a plurality of permanent magnets are provided, the magnetic change coil and the magnetic conducting column each correspond to one of the permanent magnets, and the magnetic change coil is wound around a circumferential side of the corresponding permanent magnet.

[0024] An electrically-powered airplane comprises any one of the propeller locking devices and further comprises a driving motor.

[0025] The utility model has the advantages of:

[0026] By setting the magnetic member, the permanent magnet can be magnetized, so that the permanent magnet has magnetism, attracts the magnetic guide column arranged opposite to it, so that it cannot rotate relative to the permanent magnet. Since the permanent magnet is connected to the fixed part of the driving motor, the rotating part of the driving motor connected to the magnetic guide column cannot rotate, thereby the paddle connected to the rotating part of the driving motor cannot rotate, achieving the purpose of locking the paddle. Compared with the traditional paddle locking method, the driving motor does not need to be continuously powered, so the driving motor will not heat for a long time, and the battery power is saved, and the endurance is improved. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical scheme in the specific embodiment of the present application or the prior art, the drawings needed in the specific embodiment or the prior art description will be briefly introduced as follows. Obviously, the drawings described below are some embodiments of the present application. For those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0028] Figure 1 A perspective view of the paddle locking device provided by the embodiment of the present application is provided.

[0029] Figure 2 A perspective view of the stator assembly provided by the embodiment of the present application is provided.

[0030] Figure 3 A perspective view of the rotor assembly provided by the embodiment of the present application is provided.

[0031] Figure 4 A perspective split schematic view of the paddle locking device and the driving motor provided by the embodiment of the present application is provided.

[0032] Figure 5 A perspective assembly schematic view of the paddle locking device and the driving motor provided by the embodiment of the present application is provided.

[0033] Icon: 1, permanent magnet; 2, magnetic guide column; 3, magnetic change coil; 4, first ring plate; 5, second ring plate; 6, sliding groove; 7, sliding block; 8, spring; 9, locking column; 10, locking hole; 11, rotor upper support; 12, stator support. DETAILED DESCRIPTION

[0034] The technical scheme of the present application will be described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0035] Embodiment one:

[0036] As Figures 1-5 shown, one embodiment of the utility model provides a lock paddle device for locking the paddle connected with the rotating part of the driving motor in the electric aircraft, including stator assembly and rotor assembly;

[0037] The stator assembly includes permanent magnet 1 and magnetic supply component, the permanent magnet 1 is connected in the fixed part of driving motor, and the magnetic supply component is used for magnetizing or demagnetizing permanent magnet 1;

[0038] The rotor assembly includes magnetic conducting column 2, and the magnetic conducting column 2 is connected in the rotating part of driving motor, and the magnetic conducting column 2 is oppositely arranged with permanent magnet 1.

[0039] Through the magnetic supply component, permanent magnet 1 can be magnetized, so that permanent magnet 1 has magnetism, attracts the magnetic conducting column 2 oppositely arranged with it, so that it cannot rotate relative to permanent magnet 1, since permanent magnet 1 is connected in the fixed part of driving motor, therefore, the rotating part of driving motor connected with magnetic conducting column 2 cannot rotate, and further, the paddle connected on the rotating part of driving motor cannot rotate, to achieve the purpose of locking paddle, compared with the traditional locking paddle mode, driving motor does not need to be continuously powered, so that driving motor will not heat for a long time, and battery power is saved, and the endurance is improved.

[0040] The magnetic supply component can be used for magnetizing permanent magnet 1 to make permanent magnet 1 attract magnetic conducting column 2, and can also demagnetize permanent magnet 1, so that there is no force between permanent magnet 1 and magnetic conducting column 2, and driving motor does not affect the rotation of paddle.

[0041] According to one embodiment of the utility model, the magnetic supply component includes power supply and magnetic change coil 3, and the magnetic change coil 3 is wound on the circumferential side of permanent magnet 1.

[0042] The power supply is electrically connected with the magnetic change coil 3 and is used for providing forward current or reverse current for the magnetic change coil 3.

[0043] Wherein, the power supply is a bidirectional direct current power supply, which can provide direct current in two directions, and the bidirectional direct current power supply is prior art, and will not be described in detail here.

[0044] The magnetic supply component is a component that can provide a magnetic field for permanent magnet 1.

[0045] The magnetic change coil 3 is a small-resistance conductor such as copper or aluminum.

[0046] The permanent magnet 1 and the magnetic conducting column 2 can attract each other, the magnetic conducting column 2 is made of a material without magnetism and can be attracted by the permanent magnet 1, for example, a magnetic conducting steel containing iron, cobalt and nickel, and the power supply only needs to instantaneously pass a forward current into the magnetic changing coil 3 and then be turned off, at this time, the permanent magnet 1 is permanently magnetized after being magnetized, can attract the magnetic conducting column 2, so that the magnetic conducting column 2 cannot rotate, and then the rotating part of the driving motor connected with the paddle cannot rotate, the locking of the paddle is completed, when the paddle does not need to be locked, the power supply is turned on to pass a reverse current into the magnetic changing coil 3 and then be turned off, the magnetic field direction provided by the magnetic changing coil 3 is opposite to the magnetic field direction of the permanent magnet 1, and then the permanent magnet 1 can be demagnetized, so that there is no acting force between the permanent magnet 1 and the magnetic conducting column 2, the power supply does not need to be always turned on, energy is saved, in addition, the battery power for supplying power to the driving motor is not consumed, and the endurance is not affected.

[0047] According to one embodiment of the utility model, the permanent magnet 1 is provided with a plurality of magnetic changing coils 3, and the magnetic changing coil 3 and the permanent magnet 1 corresponding thereto are one-to-one corresponding, and the magnetic changing coil 3 is wound on the circumferential side of the permanent magnet 1 corresponding thereto.

[0048] Each permanent magnet 1 corresponds to a magnetic changing coil 3, so that the magnetizing effect of the permanent magnet 1 is better.

[0049] It should be noted that the first end of all the magnetic changing coils 3 is connected to one input end of the power supply, and the tail end of all the magnetic changing coils 3 is connected to the other input end of the power supply, that is, all the magnetic changing coils 3 are connected in parallel.

[0050] By providing a plurality of permanent magnets 1 and magnetic conducting columns 2, the rotating part of the driving motor can be more uniformly stressed when being locked, and the stability is better.

[0051] Of course, in the embodiment, one magnetic changing coil 3 can also correspond to a plurality of permanent magnets 1, and can also magnetize the permanent magnets 1, and the purpose does not deviate from the design idea of the utility model, therefore, it shall belong to the protection scope of the utility model.

[0052] According to one embodiment of the utility model, the rotor assembly is slidably connected to the rotating part of the driving motor through a guide piece, and the guide piece is used to guide the magnetic conducting column 2 to move only in the direction close to or away from the permanent magnet 1, that is, the guide piece can prevent the magnetic conducting column 2 from rotating relative to the rotating part of the driving motor.

[0053] By slidably connecting the rotor assembly to the rotating part of the driving motor, the distance between the magnetic conducting column 2 and the permanent magnet 1 can be smaller after being attracted, the suction force is stronger, and the stability is better, so that the suction force between the magnetic conducting column 2 and the permanent magnet 1 is greater than the rotating force in the free state of the paddle, and then the rotating part of the driving motor can be locked, and the locking of the paddle is completed.

[0054] According to one embodiment of the utility model, the stator assembly further comprises a first ring plate 4, and the permanent magnet 1 is connected to the first ring plate 4;

[0055] The rotor assembly further comprises a second ring plate 5, and the magnetic conducting column 2 is connected to the second ring plate 5.

[0056] The first ring plate 4 is fixedly connected to the fixed part of the driving motor, and the second ring plate 5 is connected to the rotating part of the driving motor.

[0057] Preferably, the first ring plate 4 and the second ring plate 5 are parallel.

[0058] Preferably, the first ring plate 4 is provided with a first through hole, the permanent magnet 1 is fixedly connected with a baffle at an end away from the first ring plate 4, the baffle is provided with a second through hole, the magnetic field changing coil 3 is tightly wound on the permanent magnet 1, one end of the magnetic field changing coil 3 is connected to one input end of the power supply through the first through hole, and the other end of the magnetic field changing coil 3 is connected to the other input end of the power supply through the second through hole.

[0059] The diameter of the first through hole is smaller than the wire diameter of the magnetic field changing coil 3, so that the wire body of the magnetic field changing coil 3 can be fixed in the first through hole and the second through hole, and the magnetic field changing coil 3 as a whole is fixed.

[0060] Of course, in the embodiment, a rubber ring can also be arranged in the first through hole and the second through hole, which can press and fix the wire body of the magnetic field changing coil 3 without damaging the wire body of the magnetic field changing coil 3.

[0061] According to one embodiment of the utility model, the inner side wall of the second ring plate 5 is attached to the outer side wall of the rotating part of the driving motor.

[0062] The guide member comprises a sliding groove 6 arranged on the inner side wall of the second ring plate 5.

[0063] The outer side wall of the rotating part of the driving motor is fixedly connected with a sliding block 7, and the sliding block 7 is slidingly connected in the sliding groove 6.

[0064] The first ring plate 4 and the second ring plate 5 are both ring plates made of aluminum.

[0065] Of course, in the embodiment, the sliding groove 6 can also be arranged on the outer side wall of the rotating part of the driving motor, and the sliding block 7 can be fixedly connected to the inner side wall of the second ring plate 5, so that the second ring plate 5 and the rotating part of the driving motor are slidingly connected.

[0066] Preferably, the sliding groove 6 is a T-shaped groove, and the sliding block 7 is a T-shaped block.

[0067] According to one embodiment of the utility model, the paddle locking device further comprises a spring 8, one end of the spring 8 is connected to the second ring plate 5, and the other end of the spring 8 is connected to the rotating part of the driving motor.

[0068] Further, the outer side of the spring 8 is sleeved with a first limiting pipe, the outer side of the first limiting pipe is sleeved with a second limiting pipe, one end of the first limiting pipe away from the second limiting pipe is connected with the second ring plate 5, one end of the second limiting pipe away from the first limiting pipe is connected with the rotating part of the driving motor, the first limiting pipe and the second limiting pipe can limit the stretching direction of the spring 8, so that the spring 8 only stretches along the length direction, the length direction of the spring 8 is the same as the length direction of the sliding groove 6, and the length direction of the sliding groove 6 is perpendicular to the first ring plate 4.

[0069] Of course, in the embodiment, one end of the spring 8 is fixedly connected with the second ring plate 5, and the other end is fixedly connected with the rotating part of the driving motor, and the two ends can be connected by screws, a mounting plate is fixedly connected on the rotating part of the driving motor, a first threaded groove is formed in the mounting plate, a second threaded groove is formed in the second ring plate 5, the two ends of the spring 8 are fixedly connected with pressing plates, threaded holes are formed in the two pressing plates, a first screw is screwed into the first threaded groove through one threaded hole, and a second screw is screwed into the second threaded groove through the other threaded hole, so that the spring 8, the rotating part of the driving motor and the second ring plate 5 are fixed.

[0070] According to one embodiment of the utility model, the locking device further comprises an auxiliary limiting assembly, and the auxiliary limiting assembly is used for limiting the rotation of the rotating part of the driving motor.

[0071] According to one embodiment of the utility model, the auxiliary limiting assembly comprises a locking column 9 fixedly connected to the first ring plate 4.

[0072] A locking hole 10 adapted to the locking column 9 is formed in the second ring plate 5.

[0073] When the permanent magnet 1 attracts the magnetically conductive column 2, the second ring plate 5 moves on the rotating part of the motor towards the first ring plate 4, that is, the magnetically conductive column 2 moves towards the corresponding permanent magnet 1, at this time, the spring 8 is in a stretched state, the locking column 9 on the first ring plate 4 enters the locking hole 10 formed in the second ring plate 5, and the rotating part of the motor is limited by mechanical locking, so that the rotating part of the motor cannot rotate, and the overall stability is better.

[0074] It should be noted that when the auxiliary limiting assembly is provided, the attractive force between the magnetically conductive column 2 and the permanent magnet 1 can be selected in a larger range, the attractive force between the magnetically conductive column 2 and the permanent magnet 1 only needs to enable the second ring plate 5 to move towards the first ring plate 4, and the locking hole 10 on the second ring plate 5 is sleeved on the corresponding locking column 9, so that the rotating part of the driving motor cannot rotate through the locking column 9 and the locking hole 10, and the effect of locking the paddle is achieved.

[0075] Preferably, the locking columns 9 and the locking holes 10 are provided in plurality, and the locking columns 9 and the locking holes 10 are in one-to-one correspondence, and a plurality of groups of the locking columns 9 and the locking holes 10 are provided, which can further improve the stability of the locking.

[0076] Preferably, one permanent magnet 1 is arranged between each two adjacent locking columns 9.

[0077] Specifically, since the sliding block 7 is connected to the outer side wall of the rotating part of the driving motor, and the sliding groove 6 is arranged on the inner side wall of the second ring plate 5, the second ring plate 5 cannot rotate relative to the rotating part of the driving motor, and the second ring plate 5 can only slide along the length direction of the sliding block 7, when the propeller needs to be locked, the power supply instantaneously passes positive current into the magnetic change coil 3 and then is closed, thereby magnetizing the permanent magnet 1, the permanent magnet 1 attracts the magnetism column 2, at this time, the spring 8 is in a stretched state, the second ring plate 5 moves towards the first ring plate 4, the locking hole 10 is sleeved on the locking column 9, and the rotating part of the driving motor cannot rotate.

[0078] When the propeller does not need to be locked, the power supply instantaneously passes reverse current into the magnetic change coil 3 and then is closed, thereby demagnetizing the permanent magnet 1, and there is no acting force between the permanent magnet 1 and the magnetism column 2, the spring 8 is reset, the second ring plate 5 is driven to move away from the first ring plate 4, the locking hole 10 is separated from the locking column 9, and the rotating part of the driving motor in the electric aircraft can work normally.

[0079] Embodiment two:

[0080] An electric aircraft comprises a propeller locking device and a driving motor.

[0081] Specifically, the driving motor has a rotating part and a fixed part, the propeller is connected to the rotating part of the driving motor, the rotating part of the driving motor comprises a rotor upper support 11, the fixed part of the driving motor comprises a stator support 12, the first ring plate 4 is fixed to the stator support 12, the second ring plate 5 is slidably connected to the rotor upper support 11, and the sliding block 7 is fixedly connected to the rotor upper support 11. The structure of the driving motor in the electric aircraft is prior art, and will not be described in detail here.

[0082] In the description of the utility model, it should be explained that the position relationship indicated by the terms "upper", "lower" and the like is based on the position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and cannot be understood as a limitation on the utility model. Therefore, it cannot be understood as indicating or implying that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0083] In the description of the utility model, it is necessary to explain, unless another explicit provision and limitation, term "installation", "communication", "connection" should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected;Can be mechanical connection, also can be electrical connection;Can be direct communication, also can pass through intermediate medium indirectly communicates, can be two element inside communication.For ordinary skilled person in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.In addition, in the description of the utility model, unless otherwise stated, the meaning of "a plurality of" is two or more than two.

[0084] The above only is the preferred embodiment of the utility model, and does not limit the utility model, and any modification, equivalent replacement, improvement etc. that is made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A lock blade device for locking a blade connected to a rotating portion of a driving motor in an electrically driven aircraft, characterized by, The application relates to a locking propeller device. The stator assembly comprises permanent magnets (1) connected to the fixed part of the driving motor and a magnetization member for magnetizing or demagnetizing the permanent magnets (1). The rotor assembly comprises a magnetic conducting column (2) connected to the rotating part of the driving motor and arranged opposite to the permanent magnets (1).

2. A lockout device according to claim 1, wherein, The magnetization member comprises a power supply and a magnetization coil (3) wound around the circumferential side of the permanent magnets (1). The power supply is electrically connected to the magnetization coil (3) to provide positive or reverse current for the magnetization coil (3).

3. A lockout device as defined in claim 1, wherein, The stator assembly further comprises a first ring plate (4) to which the permanent magnets (1) are connected. The rotor assembly further comprises a second ring plate (5) to which the magnetic conducting column (2) is connected. The first ring plate (4) is fixedly connected to the fixed part of the driving motor, and the second ring plate (5) is connected to the rotating part of the driving motor.

4. A lockout device as defined in claim 3, wherein, The rotor assembly is slidingly connected to the rotating part of the driving motor through a guide member for guiding the magnetic conducting column (2) to move only in the direction of approaching or moving away from the permanent magnets (1).

5. A lockout device as defined in claim 4, wherein, The inner side wall of the second ring plate (5) is attached to the outer side wall of the rotating part of the driving motor. The guide member comprises a sliding groove (6) formed in the inner side wall of the second ring plate (5). The outer side wall of the rotating part of the driving motor is fixedly connected with a sliding block (7) which is slidingly connected in the sliding groove (6).

6. A lockout device as defined in claim 3, wherein, The locking propeller device further comprises a spring (8) with one end connected to the second ring plate (5) and the other end connected to the rotating part of the driving motor.

7. A lockout device as defined in claim 3, wherein, The locking propeller device further comprises an auxiliary limiting assembly for limiting the rotation of the rotating part of the driving motor.

8. A lockout device according to claim 7, wherein, The auxiliary limiting assembly comprises a locking column (9) fixedly connected to the first ring plate (4). The second ring plate (5) is provided with a locking hole (10) matched with the locking column (9).

9. A lockout device as defined in claim 2, wherein, A plurality of permanent magnets (1) are arranged, and the magnetization coil (3) and the magnetic conducting column (2) are one-to-one corresponding to the permanent magnets (1), and the magnetization coil (3) is wound around the circumferential side of the corresponding permanent magnet (1).

10. An electrically powered aircraft, characterized in that, The application further relates to a locking propeller device comprising the device as claimed in any one of claims 1-9 and a driving motor.

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