Foldable rack and drone

Abstract

The present application discloses a foldable frame and a UAV. The foldable frame includes: a fuselage, a connecting arm, which is rotatably connected to the fuselage; a rotating member, which is mounted on the connecting arm; and at least two fixing members, which are arranged to be mounted on the fuselage and are respectively located on both sides of the connecting arm; wherein, one of the rotating member and the fixing member is a magnet capable of generating a magnetic field, and the other is a magnet or a ferromagnetic material capable of being attracted by a magnet, and when the connecting arm rotates relative to the fuselage, under the interaction between the rotating member and the fixing member, the connecting arm can be maintained in an unfolded position or a folded position. The present application can be applied to the field of UAV technology. Under the action of the magnetic field force of the rotating member and the fixing member, the connecting arm can drive the rotor or the gimbal to maintain an unfolded or folded position. The folding of the rotor facilitates the transportation of the UAV and avoids collision and damage to the rotor. After the gimbal is unfolded, the camera device can avoid interference from the landing gear, thereby achieving interference-free panoramic photography.

Description

Technical Field

[0001] The present invention relates to the technical field of unmanned aerial vehicles, and in particular to a foldable frame and a unmanned aerial vehicle comprising the frame. Background Art

[0002] The existing UAV aircraft has an outwardly extending connecting shaft connected to the fuselage, and the rotor is usually installed on the connecting shaft, which makes the overall size of the UAV larger and inconvenient to transport; and the rotor is easily hit and damaged during transportation. Summary of the invention

[0003] In order to solve the above technical problems, the present invention provides a foldable frame, which can be used for a UAV, and the rotor can be folded to facilitate the transportation of the UAV and avoid damage.

[0004] In order to achieve the purpose of the present invention, an embodiment of the present invention provides a foldable frame, comprising:

[0005] body;

[0006] A connecting arm connected to the fuselage and capable of rotating relative to the fuselage;

[0007] a rotating member mounted on the connecting arm; and

[0008] At least two fixing members, at least two fixing members are installed on the fuselage and are respectively located on both sides of the connecting arm;

[0009] Among them, one of the rotating part and the fixed part is a magnet that can generate a magnetic field, and the other is a magnet or a ferromagnetic material that can be attracted by a magnet. When the connecting arm rotates relative to the fuselage, the connecting arm can be maintained in an unfolded position or a folded position under the interaction between the rotating part and the fixed part.

[0010] The foldable frame of the present embodiment has a connecting arm that can rotate relative to the fuselage, so that the connecting arm can rotate relative to the fuselage between a deployed position and a folded position. In this way, when the frame is used for a drone, the connecting arm can drive the rotor to rotate to the deployed position to facilitate the flight of the drone and aerial photography. When the connecting arm drives the rotor to rotate to the folded position, the rotor can be folded up to reduce the size of the drone for easy transportation. After the rotor is folded up, the rotor can be prevented from being hit or damaged.

[0011] A rotating part is provided on the connecting arm, and a fixed part is provided on the fuselage, and one of the rotating part and the fixed part is a magnet capable of generating a magnetic field, and the other is a magnet or a ferromagnetic material capable of being attracted by a magnet, so that a magnetic field force can be generated between the rotating part and the fixed part; at least two fixed parts are provided, and are respectively located on both sides of the connecting arm, so that the fixed parts on both sides can apply a magnetic field force to the rotating part on the connecting arm, and after the connecting arm is rotated to one side by a certain angle under the action of an external force, such as after being rotated to an unfolding direction or a folding direction by a certain angle, the connecting arm can be maintained in an unfolded position or a folded position under the action of the magnetic field force, so as to unfold or fold the rotor.

[0012] The connecting arm is maintained in the unfolded position or the folded position by the magnetic field force between the rotating part and the fixed part. The structure is simple, easy to install, easy to implement and low in cost.

[0013] Optionally, at least two rotating members are provided and are respectively installed on both sides of the connecting arm.

[0014] Rotating parts are provided on both sides of the connecting arm, so that the rotating parts on both sides of the connecting arm are subjected to the magnetic field force of the fixing part, so that the connecting arm can be maintained in the unfolded position or folded position under the joint action of the magnetic field forces on both sides during the process of rotating, unfolding or folding.

[0015] Optionally, two of the rotating member and two of the fixing member are provided.

[0016] Optionally, a magnetic conductive shell is disposed outside the fixing member, the magnetic conductive shell has an opening, and the opening faces the rotating member.

[0017] Optionally, a magnetic conductive shell is disposed outside the rotating member, the magnetic conductive shell has an opening, and the opening faces the fixed member adjacent to the rotating member.

[0018] Since the magnetic field interferes with certain electronic components of the drone, a magnetic shell is made of magnetic conductive material to shield the magnetic field, thereby reducing interference and improving the performance of the electronic components. In addition, an opening is opened on the magnetic conductive shell, and the opening of the magnetic conductive shell of the fixed part is directed toward the rotating part, and the opening of the magnetic conductive shell of the rotating part is directed toward the fixed part adjacent to the rotating part, so as to ensure that there is a magnetic field force between the rotating part and the fixed part, so that the connecting arm can be maintained in the expanded position or the folded position under the action of the magnetic field force.

[0019] Optionally, the foldable frame further comprises: a base, the fixing member is mounted on the base, and the connecting arm is rotatably connected to the base;

[0020] The base is configured to be fixed to the body.

[0021] When the frame includes a base, the connecting arm can be rotatably connected to the base, the fixing part can be installed on the base, and then the base can be fixed to the fuselage, and the rotation of the connecting arm relative to the fuselage can also be achieved; in addition, the setting of the base avoids the need to set fixing parts on the fuselage, and it is only necessary to fix the base to the fuselage, which reduces the modification of the fuselage, so that the frame can be used on various drones, thereby improving the applicability of the foldable frame.

[0022] Optionally, the rotating member and the fixed member are both magnets or both electromagnets.

[0023] Optionally, the rotating member is a magnet, and the fixed member is a soft magnet;

[0024] Alternatively, the rotating member is a soft magnet and the fixed member is a magnet;

[0025] Alternatively, the rotating member is an electromagnet and the fixed member is a magnet;

[0026] Alternatively, the rotating member is a magnet and the fixed member is an electromagnet;

[0027] Alternatively, the rotating member is an electromagnet, and the fixed member is a soft magnet;

[0028] Alternatively, the rotating part is a soft magnet, and the fixing part is an electromagnet.

[0029] When both the rotating part and the fixed part are magnets, there may be a magnetic attraction or magnetic repulsion between the rotating part and the fixed part, and under the action of the magnetic attraction or magnetic repulsion, the connecting arm can be maintained in the extended position or the folded position; when the rotating part and the fixed part are magnets and soft magnets respectively, there is a magnetic attraction between the rotating part and the fixed part, and under the action of the magnetic attraction, the connecting arm can be attracted and maintained in the extended position or the folded position; when the rotating part or the fixed part is an electromagnet, the presence, size and direction of the magnetic field generated by the electromagnet are controlled by controlling the on and off of the electromagnet, the direction of the current and the magnitude of the current, thereby controlling the presence, size and direction of the magnetic field force between the rotating part and the fixed part, and enabling the connecting arm to be maintained in the extended position or the folded position.

[0030] An embodiment of the present invention further provides a drone, comprising a rotor and a foldable frame as described in any of the above embodiments, wherein one end of a connecting arm of the frame is rotatably connected to the fuselage, and the other end is connected to the rotor.

[0031] The rotor of the drone of this embodiment is connected to the fuselage through a foldable connecting arm, so that the rotor can be unfolded or folded by rotation and maintained in the unfolded position or folded position. In this way, when the drone is in use, the rotor can be unfolded to facilitate the flight of the drone and aerial photography; when the drone is transported, the rotor can be folded to reduce the size of the drone, facilitate transportation, and prevent the rotor from colliding or being damaged during transportation.

[0032] An embodiment of the present invention further provides a drone, comprising a gimbal and a foldable frame as described in any of the above embodiments, wherein one end of a connecting arm of the frame is rotatably connected to the fuselage, and the other end is connected to the gimbal.

[0033] The drone of this embodiment has a gimbal connected to the fuselage via a foldable connecting arm, so that the gimbal can be rotated to unfold or fold and maintained in the unfolded position or the folded position. In this way, when the drone is used for aerial photography, the frame can be rotated to unfold so that the camera device fixed on the gimbal is lower than the landing gear, so as to effectively avoid interference from the landing gear and achieve interference-free panoramic photography of the camera device.

[0034] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects:

[0035] The foldable frame provided by the embodiment of the present invention has a connecting arm that is maintained in an extended position or a folded position under the action of the magnetic field force of the rotating part and the fixed part. In this way, when the frame is used to connect the rotor to the fuselage of the unmanned aerial vehicle, the rotor can be maintained in the extended position or the folded position. After the rotor is folded, it is convenient to transport the unmanned aerial vehicle, and at the same time, it is prevented from colliding or being damaged during transportation. When the frame is used to connect the gimbal to the fuselage of the unmanned aerial vehicle, the gimbal can be maintained in the extended position or the folded position. After the gimbal is unfolded, the camera device on the gimbal can avoid the interference of the landing gear, thereby realizing interference-free panoramic photography of the camera device.

[0036] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The accompanying drawings are used to provide a further understanding of the technical solution of the present invention and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the technical solution of the present invention and do not constitute a limitation on the technical solution of the present invention.

[0038] Figure 1 A schematic diagram of the three-dimensional structure of a foldable frame according to an embodiment of the present invention;

[0039] Figure 2 for Figure 1 A three-dimensional structural schematic diagram of the foldable frame shown in another perspective;

[0040] Figure 3 yes Figure 1 A schematic diagram of the main structure of the foldable frame shown;

[0041] Figure 4 for Figure 3 AA section structure schematic diagram.

[0042] in, Figure 1-Figure 4 The relationship between the reference numerals and the component names is as follows:

[0043] 1 connecting arm, 2 fuselage, 3, 3' rotating parts, 4, 4' fixing parts, 5, 5' magnetic conductive shell, 6 rotating shaft. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solution and advantages of the present invention more clear, the embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other arbitrarily without conflict.

[0045] The following takes a drone as an example to specifically describe the foldable frame of the present invention. It should be noted that the foldable frame of the present invention can also be used on other products besides drones, such as handheld gimbals, etc., which are not listed here one by one.

[0046] Embodiment 1:

[0047] An embodiment of the present invention provides a drone, comprising a rotor (not shown) and a foldable frame.

[0048] Specifically, Figure 1-Figure 4 As shown, the frame includes a body 2, a connecting arm 1, a rotating member 3 and at least two fixing members 4, 4'.

[0049] The connecting arm 1 is configured such that one end is connected to the fuselage and can rotate relative to the fuselage, and the other end is connected to the rotor.

[0050] The connecting arm 1 is connected to the fuselage and can rotate relative to the fuselage, so that the connecting arm 1 can drive the rotor to rotate to the deployed position or the folded position. When the rotor is in the deployed position, the motor can drive the rotor to rotate to generate lift, so that the UAV can fly, perform aerial photography and other tasks; when the connecting arm 1 drives the rotor to rotate to the folded position, the rotor can be folded to reduce the size of the UAV for easy transportation, and after the rotor is folded, it can be prevented from being damaged by collision.

[0051] The rotating member 3 is mounted on the connecting arm 1, and at least two fixing members 4, 4' are mounted on the fuselage and are respectively located on both sides of the connecting arm 1. In addition, one of the rotating member and the fixing member is a magnet capable of generating a magnetic field, and the other is a magnet or a ferromagnetic material that can be attracted by a magnet, and the ferromagnetic material is a material containing one or more of iron, cobalt, and nickel. Under the interaction between the rotating member 3 and the fixing members 4, 4', the connecting arm 1 can be maintained in an unfolded position or a folded position relative to the fuselage.

[0052] Specifically, there is a magnetic field force between the rotating part 3 and the fixed parts 4, 4'. When the connecting arm 1 rotates under the action of an external force and passes an extreme position (for example, at this extreme position, the magnetic field force exerted by the fixed parts 4, 4' on the rotating part 3 on the connecting arm 1 along the circumferential direction of rotation cancel each other out), and then approaches the fixed part 4, since the magnetic field force exerted by the fixed parts 4 and 4' on the rotating part 3 on the connecting arm 1 is different in magnitude, the force components along the circumferential direction no longer cancel each other out, and the connecting arm 1 rotates to the expanded position or the folded position under the action of the circumferential component force, and keeps the connecting arm 1 in the expanded position or the folded position.

[0053] The connecting arm 1 is maintained in the unfolded position or the folded position by the magnetic field force between the rotating member 3 and the fixing members 4 and 4'. The structure is simple, convenient to install, easy to implement and low in cost.

[0054] Optionally, at least two rotating members are provided and respectively installed on two sides of the connecting arm 1 .

[0055] Rotating parts are respectively arranged on both sides of the connecting arm 1, so that the rotating parts on both sides of the connecting arm 1 are subjected to the magnetic field force of the fixing parts 4, 4'. The connecting arm 1 rotates to unfold or fold under the combined action of the magnetic field forces on both sides, and finally maintains in the unfolded position or folded position.

[0056] Alternatively, if Figure 1-Figure 3 As shown, in this embodiment, two rotating parts 3, 3' and two fixed parts 4, 4' are provided.

[0057] Of course, other numbers of rotating parts and fixed parts may be provided, such as three or more than three.

[0058] Optionally, in this embodiment, the two rotating parts 3, 3' are both soft magnetic bodies (such as iron blocks), and the two fixing parts 4, 4' are both magnets.

[0059] Under the action of the magnetic attraction between the two rotating parts 3, 3' and the two fixed parts 4, 4', after the connecting arm 1 passes through a certain limit position under the action of external force (that is, the components of the magnetic attraction along the rotation circumferential direction of the rotating parts 3, 3' on the connecting arm 1 cancel each other out), if a force is applied to the connecting arm 1 to make the connecting arm 1 approach the fixed part 4, the magnetic attraction between the rotating part 3 and the fixed part 4 is greater than the magnetic attraction between the rotating part 3' and the fixed part 4', so that the connecting arm 1 continues to rotate toward the fixed part 4 until it reaches the expanded position (such as contacting the fixed part 4, or contacting the limit block) and stably maintains it. The unfolded position, at this time, the connecting arm 1 is in the unfolded state, and the rotor is also unfolded to provide flying power for the UAV; if after the connecting arm 1 passes the extreme position, a force is applied to the connecting arm 1 to make the connecting arm 1 approach the direction of the fixed part 4', the magnetic attraction between the rotating part 3' and the fixed part 4' is greater than the magnetic attraction between the rotating part 3 and the fixed part 4, so that the connecting arm 1 continues to rotate toward the direction of the fixed part 4' until it reaches the folded position (such as contacting the fixed part 4', or contacting another limit block) and stably maintains in the folded position. At this time, the connecting arm 1 is in the folded state, and the rotor is also folded to facilitate the transportation of the UAV.

[0060] In some other embodiments, the rotating parts 3, 3' and the fixing parts 4, 4' may also be arranged in other ways.

[0061] For example, the two rotating parts 3, 3' are both magnets, and the two fixed parts 4, 4' are both soft magnets. At this time, the connecting arm 1 rotates to and remains in the unfolded position or the folded position under the action of the magnetic attraction between the magnets and the soft magnets; or, the two rotating parts 3, 3' and the two fixed parts 4, 4' are both magnets, and there is a magnetic attraction between the rotating parts 3, 3' and the fixed parts 4, 4'. Under the action of this magnetic attraction, the connecting arm 1 rotates to and remains in the unfolded position or the folded position.

[0062] Or, for example, the rotating parts 3 and 3' are magnets, and the fixed parts 4 and 4' are electromagnets. By controlling the on and off of the electromagnets, the direction of the current, and the magnitude of the current, the presence, magnitude, and direction of the magnetic field generated by the electromagnets can be controlled to control the rotation of the connecting arm 1. For example, a magnetic attraction force is created between the rotating part 3 and the fixed part 4, and a magnetic repulsion force is created between the rotating part 3' and the fixed part 4'. Under the action of the magnetic attraction force and the magnetic repulsion force, the connecting arm 1 rotates to the unfolded position and remains in the unfolded position; the direction of the current in the fixed parts 4 and 4' is changed, so that a magnetic repulsion force is created between the rotating part 3 and the fixed part 4, and a magnetic attraction force is created between the rotating part 3' and the fixed part 4'. Under the action of the magnetic attraction force and the magnetic repulsion force, the connecting arm 1 rotates to the folded position and remains in the folded position.

[0063] Or, for example, the rotating parts 3, 3' and the fixed parts 4, 4' are all electromagnets, and the presence, size and direction of the magnetic field generated by the electromagnets are controlled by controlling the on and off of the electromagnets, the direction of the current and the size of the current, so as to control the rotation of the connecting arm 1. For example: a magnetic repulsion force is created between the rotating part 3 and the fixed part 4, and the rotating part 3' and the fixed part 4' are not powered, and there is no magnetic field force between them, then under the action of the magnetic repulsion force, the connecting arm 1 rotates to the folded position and remains in the folded position; a magnetic repulsion force is created between the rotating part 3' and the fixed part 4', and the rotating part 3 and the fixed part 4 are not powered, and there is no magnetic field force between them, then under the action of the magnetic repulsion force, the connecting arm 1 rotates to the unfolded position and remains in the unfolded position.

[0064] Since the magnetic field interferes with some electronic components of the drone and affects the use of the electronic components, magnetic conductive materials can be used to make magnetic conductive shells to shield the magnetic field, reduce interference, and improve the performance of electronic components. Figure 1-Figure 3 As shown, in this embodiment, the fixing members 4, 4' are magnets, so magnetic conductive shells 5, 5' are arranged outside the fixing members 4, 4'.

[0065] In order to prevent the magnetic casing 5 from shielding the magnetic field between the rotating part 3 and the fixed part 4, and the magnetic casing 5' from shielding the magnetic field between the rotating part 3' and the fixed part 4', thereby affecting the rotation of the connecting arm 1, Figure 1-Figure 3 As shown, openings are provided on the magnetically conductive shells 5, 5', and the openings face the rotating parts 3, 3' respectively, to ensure the existence of magnetic field forces between the rotating part 3 and the fixed part 4, and between the rotating part 3' and the fixed part 4', so that the connecting arm 1 can rotate under the action of the magnetic field forces and maintain in the folded position or the unfolded position.

[0066] When the rotating parts 3 and 3' are magnets, a magnetic conductive shell can also be arranged outside the rotating parts 3 and 3'. Furthermore, the magnetic conductive shell has an opening, and the opening faces the fixed part 4 (or 4') adjacent to the rotating part 3 (or 3'). In this way, the magnetic field force is ensured between the rotating part 3 and the fixed part 4, and between the rotating part 3' and the fixed part 4', and the connecting arm 1 can be rotated to and maintained in the folded position or the unfolded position, thereby reducing the interference of the magnetic field on the electronic components.

[0067] Optionally, the foldable frame further comprises a base, the fixing members 4, 4' are mounted on the base, the connecting arm 1 is rotatably connected to the base, and the base is configured to be fixed to the body.

[0068] When the frame includes a base, the connecting arm 1 can be rotatably connected to the base, the fixing parts 4, 4' can be installed on the base, and then the base can be fixed to the fuselage, and the rotation of the connecting arm 1 relative to the fuselage can also be achieved; in addition, the setting of the base avoids the need to set fixing parts 4, 4', etc. on the fuselage, and it is only necessary to fix the base to the fuselage, which reduces the modification of the fuselage, so that the frame can be used on various drones, and the applicability of the foldable frame is improved.

[0069] Optionally, the connecting arm 1 is rotatably connected to the base via a rotating shaft 6, and the rotating shaft 6 is fixed to the base, and the connecting arm 1 is rotatably connected to the rotating shaft 6. In this case, under the action of the magnetic field force, the connecting arm 1 can rotate around the rotating shaft 6 to unfold or retract the rotor.

[0070] Of course, the connecting arm and the rotating shaft can also be fixed, and the rotating shaft can be rotatably connected to the base. In this case, under the action of the magnetic field force, the connecting arm and the rotating shaft rotate together relative to the base.

[0071] Embodiment 2:

[0072] An embodiment of the present invention further provides a drone, comprising a gimbal and a foldable frame.

[0073] In this embodiment, the structure of the foldable frame is the same as that of the first embodiment, wherein one end of the connecting arm of the frame is rotatably connected to the fuselage, and the other end is connected to the pan / tilt head.

[0074] The gimbal is connected to the fuselage through a foldable frame, so that the gimbal can be rotated to expand or fold. In this way, when using the drone for aerial photography, the frame can be rotated to expand so that the camera device fixed on the gimbal is lower than the landing gear, so as to effectively avoid interference from the landing gear and achieve interference-free panoramic shooting of the camera device.

[0075] Although the embodiments disclosed in the present invention are as above, the contents described are only embodiments adopted to facilitate understanding of the present invention and are not intended to limit the present invention. Any technician in the field to which the present invention belongs can make any modifications and changes in the form and details of implementation without departing from the spirit and scope disclosed in the present invention, but the patent protection scope of the present invention shall still be defined by the attached claims.

Claims

1. A foldable frame, characterized in that: include: body; A connecting arm, the connecting arm is connected to the fuselage and can rotate relative to the fuselage; At least two rotating members, wherein at least two rotating members are respectively installed on two sides of the connecting arm; and At least two fixing members, at least two of which are mounted on the fuselage and are respectively located on two sides of the connecting arm; Among them, one of the rotating part and the fixed part is an electromagnet, and the other is a magnet or an electromagnet. When the connecting arm rotates relative to the fuselage, by controlling the on and off of the electromagnet, the direction of the current and / or the magnitude of the current, a magnetic attraction force exists between the rotating part on one side of the connecting arm and the fixed part, and a magnetic repulsion force exists between the rotating part and the fixed part on the other side of the connecting arm, or a magnetic attraction force or magnetic repulsion force exists between the rotating part and the fixed part on one side of the connecting arm, and no magnetic field force exists between the rotating part and the fixed part on the other side of the connecting arm, so that the connecting arm can be maintained in the unfolded position or the folded position.

2. The foldable frame according to claim 1, characterized in that: There are two rotating parts and two fixing parts.

3. The foldable frame according to any one of claims 1-2, characterized in that: A magnetic conductive shell is disposed outside the fixing member. The magnetic conductive shell has an opening, and the opening faces the rotating member.

4. The foldable frame according to any one of claims 1-2, characterized in that: A magnetic conductive shell is disposed outside the rotating member. The magnetic conductive shell has an opening, and the opening faces the fixed member adjacent to the rotating member.

5. The foldable frame according to any one of claims 1-2, characterized in that: Also includes: A base, the fixing member is mounted on the base, and the connecting arm is rotatably connected to the base; The base is configured to be fixed to the body.

6. A drone, characterized in that: It comprises a rotor and a foldable frame as claimed in any one of claims 1 to 5, wherein one end of a connecting arm of the frame is rotatably connected to the fuselage, and the other end is connected to the rotor.

7. A drone, characterized in that: It comprises a pan head and a foldable frame as claimed in any one of claims 1 to 5, wherein one end of a connecting arm of the frame is rotatably connected to the fuselage, and the other end is connected to the pan head.

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