Vertical take-off and landing electric helicopter

Abstract

The invention relates to the technical field of helicopters, in particular to a vertical take-off and landing electric helicopter which comprises a helicopter body, a plurality of groups of lift propellers are arranged on the front side and the rear side of the helicopter body respectively, a plurality of groups of lift propellers are arranged on the left side and the right side of the helicopter body respectively, the lift propellers are driven by motors, and the motors are powered by battery packs; the lifting force paddles arranged on the left side and the right side of the machine body are folding type lifting force paddles. By arranging a plurality of groups of folding lift propellers on the left side and the right side of the helicopter body, the propeller pitch of the helicopter is increased, the crosswind resistance of the helicopter is improved, and the safety performance of the helicopter is improved. Due to the fact that the foldable lift force paddles are adopted, the foldable lift force paddles are unfolded during sailing and folded before landing or after landing, the flexible structural performance is embodied, and the foldable lift force paddles can take off and land on a single lane and the roadside and are high in adaptive capacity. After the folding lift propellers are folded, the size of the helicopter in the width direction and the length direction is similar to the size of a common automobile, and the helicopter can be parked in a single parking space.

Description

Technical Field

[0001] The invention relates to the technical field of helicopters, and in particular to a vertical take-off and landing electric helicopter. Background Art

[0002] At present, rotor-type helicopters have been widely used since their invention. Their core advantages are that they can take off and land vertically, hover at a fixed point in the air, and move up and down, left and right, front and back, and roll, etc. They are used in both military and civilian fields. Although the advantages are significant, the disadvantages are also prominent. Special venues are required for takeoff and landing. In addition, existing helicopters have a large external structure and also require a large special venue for parking after landing, which is very unfavorable for the promotion of helicopters. Summary of the invention

[0003] A main purpose of the present invention is to overcome at least one defect in the prior art and provide a vertical take-off and landing electric helicopter.

[0004] In order to realize the above technical solution, the present invention adopts the following technical solution:

[0005] According to one aspect of the present invention, there is provided a vertical take-off and landing electric helicopter, comprising a body, wherein a plurality of lift propellers are respectively arranged on the front and rear sides of the body, and a plurality of lift propellers are respectively arranged on the left and right sides of the body, wherein the lift propellers are driven by a motor to generate an upward lift, and the motor is powered by a battery pack;

[0006] The lift propellers arranged on the left and right sides of the aircraft body are foldable lift propellers, which can be extended outward to increase the pitch, improve the aircraft's ability to resist crosswinds, and increase the safety of the aircraft.

[0007] According to one embodiment of the present invention, each group of lift propellers are coaxial forward propellers and reverse propellers, also known as coaxial double propellers, having a double-layer structure; the coaxial double propellers include coaxially arranged upper lift propellers and lower lift propellers, which are controlled by a drive motor; specifically, the upper lift propellers and the lower lift propellers are each controlled by a drive motor.

[0008] According to one embodiment of the present invention, the lift propellers arranged on the front and rear sides of the body are mounted on the body through a fixing bracket; the lift propellers arranged on the left and right sides of the body, each of which is mounted on the body through a folding mechanism, constitute a foldable lift propeller, which can realize the folding and unfolding of the lift propellers on the left and right sides;

[0009] Among them, the lift propellers arranged on the left and right sides of the fuselage are horizontally crossed and staggered with the lift propellers arranged on the front and rear sides of the fuselage to reduce the length of the fuselage after folding.

[0010] According to one embodiment of the present invention, the folding mechanism comprises: support tubes respectively arranged on the left and right sides of the machine body, a nut and a lead screw matched with the nut are arranged in the support tube, the lead screw is driven by a motor, and a nut end is connected to the end of the nut away from the lead screw; the nut end moves in the anti-rotation guide groove of the support tube, and the anti-rotation guide groove can prevent the nut from rotating; the outer end of the support tube is hinged to the rotating arm, and the nut end is movably connected to the rotating arm through a connecting rod;

[0011] Through the transmission cooperation of the nut and the lead screw, as well as the anti-rotation function of the anti-rotation guide groove, the rotational motion of the lead screw can be converted into the linear motion of the nut, and then converted into a pulling force or a thrust force on the connecting rod and the rotating arm.

[0012] According to an embodiment of the present invention, two seats are generally arranged in the body, and the two seats are arranged front and back or side by side.

[0013] According to one embodiment of the present invention, the connecting rod is preferably an L-shaped connecting rod; one end of the connecting rod is hinged and fixed to the rotating arm, and the other end is hinged and fixed to the nut end.

[0014] According to one embodiment of the present invention, the driving motor of the screw is a dual-output shaft motor, the screw nuts on both sides cooperate, and the two sets of screw nuts have opposite thread rotation directions, which can simultaneously fold or unfold the rotating arms on the left and right sides of the body.

[0015] According to one embodiment of the present invention, the motor is connected to the lead screw via a coupling.

[0016] According to one embodiment of the present invention, the vertical take-off and landing electric helicopter can take off and land in a single lane and park in a single parking space after being folded.

[0017] According to one embodiment of the present invention, the vertical take-off and landing electric helicopter can take off and land on a single lane or on the roadside during take-off and landing to adapt to applications in various occasions.

[0018] According to one embodiment of the present invention, a parachute is provided on the top of the fuselage, which enables safe landing in case of failure, thereby improving safety performance.

[0019] According to one embodiment of the present invention, electric aircraft tires are provided at the bottom of the aircraft body to facilitate movement and parking after landing.

[0020] It can be seen from the above technical solution that the present invention has at least one of the following advantages and positive effects:

[0021] In the present application, by arranging a plurality of groups of foldable lift propellers on the left and right sides of the fuselage, the propeller pitch of the helicopter is increased, the helicopter's ability to resist crosswinds is improved, and the safety performance of the aircraft is improved.

[0022] The foldable lift propellers are deployed during navigation and folded before or after landing, which shows a flexible structural performance and strong adaptability. When the foldable lift propellers are folded, the dimensions of the helicopter in the width and length directions are similar to those of an ordinary car, and it can be parked in a single parking space and can take off and land on a single lane of a highway or on the roadside.

[0023] By setting a parachute on the top of the fuselage, a safe landing can be guaranteed, which improves the safety performance of the helicopter and enhances its ability to cope with emergencies. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 It is a top view of a vertical take-off and landing electric helicopter according to the present invention, wherein the foldable lift propellers arranged on the left and right sides of the helicopter body are in an unfolded state;

[0026] Figure 2 for Figure 1 Another top view of a vertical take-off and landing electric helicopter, wherein the foldable lift propellers arranged on the left and right sides of the helicopter body are in a folded state;

[0027] Figure 3 for Figure 2 A front view of a vertical take-off and landing electric helicopter;

[0028] Figure 4 A three-dimensional diagram of a vertical take-off and landing electric helicopter of the present invention;

[0029] Figure 5 It is a schematic diagram of the structure of the folding mechanism of the present invention, wherein the folding mechanisms arranged on the left and right sides of the machine body are in a semi-expanded state.

[0030] The following are the descriptions of the reference numerals:

[0031] 1-airframe; 2-lift propeller; 21-upper lift propeller; 22-lower lift propeller; 3-fixed bracket; 4-folding mechanism; 41-support tube; 411-anti-rotation guide groove; 42-screw; 43-nut; 44-dual output shaft motor; 45-nut end; 46-connecting rod; 47-swivel arm; 48-coupling; 49-support tube end; 5-aircraft tire. DETAILED DESCRIPTION

[0032] In the description of the present invention, unless otherwise specified, "plurality" means two or more. The terms "inside", "outside", "upper", "lower", etc., indicating positions or state relationships, are based on the positions or state relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific position, be constructed and operate in a specific position, and therefore cannot be understood as limiting the present invention.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention will be understood according to specific circumstances.

[0034] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged under appropriate circumstances to facilitate the embodiments of the present invention described herein.

[0035] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation modes.

[0036] See attached Figures 1 to 5 As shown, the present application is a vertical take-off and landing electric helicopter, including a body 1, lift propellers 2, a fixing bracket 3, a folding mechanism 4, and an aircraft tire 5. Two groups of lift propellers 2 are respectively arranged on the front and rear sides of the body 1, and two groups of lift propellers 2 are respectively arranged on the left and right sides of the body 1. The lift propellers 2 are driven by a motor to generate an upward lift, and the motor is powered by a battery pack.

[0037] Each group of lift propellers 2 is a coaxial forward propeller and a reverse propeller, also known as a coaxial double propeller, and adopts a double-layer structure; the coaxial double propeller includes a coaxially arranged upper lift propeller 21 and a lower lift propeller 22. Specifically, the upper lift propeller 21 and the lower lift propeller 22 are each controlled by a drive motor.

[0038] In the present application, the lift propellers 2 arranged on the front and rear sides of the fuselage 1 are mounted on the fuselage 1 through a fixing bracket 3; the lift propellers arranged on the left and right sides of the fuselage 1, each of which is mounted on the fuselage 1 through a folding mechanism 4, constitute foldable lift propellers to achieve the folding and unfolding of the lift propellers 2 on the left and right sides; wherein the lift propellers arranged on the left and right sides of the fuselage 1 and the lift propellers arranged on the front and rear sides of the fuselage 1 are arranged horizontally and crosswise to reduce the length of the entire aircraft after folding; the foldable lift propellers can extend outward to increase the pitch, improve the aircraft's ability to resist crosswinds, and improve the safety of the aircraft. Figure 5 As shown, specifically, the folding mechanism 4 includes: a support tube 41 respectively arranged on the left and right sides of the body 1, a lead screw 42 and a nut 43 cooperating with the lead screw 42 are arranged in the support tube 41, the lead screw 42 is driven by a dual-output shaft motor 44, and a nut end 45 is connected to the end of the nut 43 away from the lead screw 42; the nut end 45 moves in the anti-rotation guide groove 411 of the support tube 41, and the anti-rotation guide groove 411 can prevent the nut 43 from rotating; the outer end of the support tube is hinged to the rotating arm, and the nut end 45 is movably connected to the rotating arm 47 through a connecting rod 46; through the transmission cooperation of the lead screw 42 and the nut 43, the rotational motion of the lead screw 43 can be converted into a linear motion of the nut 42, and then converted into a pulling force or a thrust force on the connecting rod 46 and the rotating arm 47.

[0039] In the present application, two seats are arranged in the body 1, and the two seats are arranged front and back or side by side, which is suitable for two people to travel. Of course, under the premise that the load of the body 1 allows, four seats can be arranged in two rows, which is particularly suitable for a family of three or four to travel. The present application provides a vertical take-off and landing electric helicopter that can be parked in a single parking space after being folded, and can take off and land on a single lane or roadside to adapt to various occasions, which is conducive to accelerating the pace of promotion and home use of small helicopters.

[0040] like Figure 5 As shown, Figure 5 The schematic diagram of the folding mechanism of the present invention is shown in FIG. 4 , wherein the lift paddles arranged on the left and right sides of the fuselage are in a semi-expanded state. The connecting rod 46 is an L-shaped connecting rod; one end of the connecting rod 46 is hingedly fixed to the rotating arm 47, and the other end is hingedly fixed to the nut end 45. The nut 43 moves linearly along the axis of the support tube 41, and an anti-rotation guide groove 411 is provided on the support tube 41, and the two ends of the nut end 45 extend from the anti-rotation guide groove 411 respectively; when the nut 43 moves linearly, it will not rotate, thereby ensuring that the connecting rod 46 and the rotating arm 47 are safely and efficiently deployed.

[0041] In the attached Figure 5In the embodiment, the dual output shaft motor 44 can simultaneously expand the rotating arms 47 on the left and right sides of the machine body 1. Specifically, the dual output shaft motor 44 is connected to the lead screws 42 on both sides through a coupling 48. It should be noted that, Figure 5 The lead screws 42 on the upper side of the middle dual output shaft motor 44 are respectively left-handed and right-handed. When the dual output shaft motor 44 rotates forward or reversely, it can simultaneously drive the lead screws and screw nuts on both sides to operate, and then convert into a push and pull force on the connecting rod 46 and the rotating arm 47, so as to realize the expansion and folding of the rotating arms 47 on both sides of the machine body 1.

[0042] In order to cope with emergencies, a parachute is provided on the top of the body 1. In case of weather reasons or body failure, the parachute can ensure safe landing, thereby improving the safety performance of the helicopter.

[0043] like Figures 1 to 4 As shown, an electric aircraft tire 5 is provided at the bottom of the fuselage 1. After landing, the aircraft is moved to a parking space or a designated position by the aircraft tire 5 for easy movement and parking.

[0044] In addition, a protective cover can be installed around the propeller to prevent injury to people and property, and effectively block foreign objects such as birds and flying plastic bags.

[0045] In summary, the present application sets several groups of foldable lift propellers on the left and right sides of the fuselage. When folded, the width of the whole machine is small, which is convenient for parking in a single parking space and can take off and land on a single lane of a highway or on the roadside; when the foldable lift propellers are deployed, the blade pitches on the left and right sides of the helicopter are increased, the helicopter's ability to resist crosswinds is improved, and the safety performance of the aircraft is improved. Due to the use of foldable lift propellers, they are deployed during navigation and folded before or after landing, which reflects a more flexible structural performance and strong adaptability.

[0046] It should be understood that the present invention is not limited in its application to the detailed structure and arrangement of the components proposed herein. The present invention can have other embodiments and can be implemented and executed in a variety of ways. The aforementioned variations and modifications fall within the scope of the present invention. It should be understood that the present invention disclosed and defined herein extends to all alternative combinations of two or more individual features mentioned or evident in the text and / or the accompanying drawings. The embodiments described herein illustrate the best mode known for implementing the present invention and will enable those skilled in the art to utilize the present invention.

Claims

1. A vertical take-off and landing electric helicopter, comprising a body, characterized in that: The front and rear sides of the body are respectively provided with a plurality of lift propellers, and the left and right sides of the body are respectively provided with a plurality of lift propellers, the lift propellers are driven by a motor, and the motor is powered by a battery pack; Among them, the lift propellers arranged on the left and right sides of the fuselage are foldable lift propellers.

2. A vertical take-off and landing electric helicopter according to claim 1, characterized in that: Each group of lift propellers is a coaxial forward propeller and a reverse propeller, also known as a coaxial double propeller. The coaxial double propeller includes an upper lift propeller and a lower lift propeller coaxially arranged, which are controlled by a drive motor.

3. A vertical take-off and landing electric helicopter according to claim 1, characterized in that: The lift propellers arranged on the front and rear sides of the fuselage are mounted on the fuselage through a fixed bracket; the lift propellers arranged on the left and right sides of the fuselage, each of which is mounted on the fuselage through a folding mechanism to achieve folding and unfolding of the lift propellers; Among them, the lift propellers arranged on the left and right sides of the fuselage and the lift propellers arranged on the front and rear sides of the fuselage can be arranged horizontally in a cross-staggered manner to reduce the length of the entire machine after folding.

4. A vertical take-off and landing electric helicopter according to claim 3, characterized in that: The folding mechanism comprises: support tubes respectively arranged on the left and right sides of the machine body, a nut and a lead screw matched with the nut are arranged in the support tube, the lead screw is driven by a motor, and a nut end is arranged at one end of the nut away from the lead screw; the nut end moves in the anti-rotation guide groove of the support tube, and the anti-rotation guide groove can prevent the nut from rotating; the outer end of the support tube is hinged with the rotating arm, and the nut end is movably connected with the rotating arm through a connecting rod; Through the transmission cooperation of the nut and the lead screw, as well as the anti-rotation function of the anti-rotation guide groove, the rotational motion of the lead screw can be converted into the linear motion of the nut, and then converted into a pulling force or a thrust force on the connecting rod and the rotating arm.

5. A vertical take-off and landing electric helicopter according to claim 4, characterized in that: The connecting rod is preferably an L-shaped connecting rod; one end of the connecting rod is hinged and fixed to the rotating arm, and the other end is hinged and fixed to the nut end.

6. A vertical take-off and landing electric helicopter according to claim 4, characterized in that: The driving motor of the lead screw is a double-output shaft motor, the lead screw nuts on both sides cooperate, and the two sets of lead screw nuts have opposite thread rotation directions, which can simultaneously fold or unfold the rotating arms on the left and right sides of the machine body.

7. The vertical take-off and landing electric helicopter according to claim 1, characterized in that: The body is generally provided with two seats, which are arranged front to back or side by side left to right.

8. A vertical take-off and landing electric helicopter according to any one of claims 1 to 7, characterized in that: Electric aircraft tires are installed at the bottom of the fuselage to facilitate movement and parking after landing.

9. A vertical take-off and landing electric helicopter according to any one of claims 1 to 7, characterized in that: The vertical take-off and landing electric helicopter can take off and land in a single lane or on the roadside, and can be parked in a single parking space after being folded.

10. A vertical take-off and landing electric helicopter according to any one of claims 1 to 7, characterized in that: A parachute is installed on the top of the fuselage, which enables safe landing in the event of a failure, thereby improving safety performance.

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