Vehicle arm and unmanned aerial vehicle

Abstract

The utility model discloses a vehicle arm and an unmanned aerial vehicle, comprising a fixed arm and a movable arm, at least one of which is provided with an external thread; the connecting assembly comprises a threaded sleeve and a locking piece, the threaded sleeve is provided with an internal thread matched with the external thread, and the threaded sleeve can be connected to the fixed arm and / or the movable arm in a threaded mode so that the fixed arm and the movable arm can be fixed in the unfolded state; the fixed arm or the movable arm is provided with a locking matching part matched with the locking piece, and under the condition that the fixed arm and the movable arm are fixed to the unfolding state through the threaded sleeve, the locking piece is matched with the locking matching part so as to limit the threaded sleeve to rotate relative to the fixed arm and / or the movable arm. After the fixed arm and the movable arm of the arm are unfolded, the threaded sleeve can be in threaded connection with the joint of the fixed arm and the movable arm, and the reliability of fixing the unfolded arm can be effectively improved through the threaded connection mode. Furthermore, according to the scheme, a locking piece capable of locking the rotational degree of freedom of the threaded sleeve is further arranged, and the problem that the threaded sleeve is loosened from the machine arm is solved.

Description

Technical Field

[0001] The present application relates to the technical field of unmanned aerial vehicles, and in particular to an arm and a unmanned aerial vehicle. Background Art

[0002] The drone includes a fuselage and an arm extending outward from the fuselage. For the convenience of transportation, the arm is usually set to two foldable sections, a fixed section close to the fuselage and a free section away from the fuselage. A fixing structure is provided between the two sections of the arm to fix the relative positions of the two sections of the arm after the arm is unfolded to prevent the free section from shaking. In the existing arm fixing structure, generally only a simple sleeve is provided, and a clamping structure is respectively provided between the sleeve and the fixed section and the free section. After the free section is unfolded, the sleeve is sleeved at the connection between the fixed section and the free section and clamped and fixed. Obviously, in the existing arm fixing structure, after the drone has been working for a long time, it is affected by the vibration of the drone, and the clamping structure of the sleeve is prone to loose displacement, which leads to the failure of fixing the free section and causes the drone to crash. Therefore, it is necessary to provide a fixing structure with better reliability to reliably fix the unfolded free section. Utility Model Content

[0003] The purpose of the embodiments of the present utility model is to provide an arm and a drone, which can solve the above-mentioned problems existing in the prior art.

[0004] To achieve the above objectives, this application adopts the following technical solutions:

[0005] In one aspect, a machine arm is provided, comprising:

[0006] At least one of the fixed arm and the movable arm is provided with an external thread;

[0007] A connecting assembly includes a threaded sleeve and a locking piece. The threaded sleeve is provided with an internal thread that cooperates with the external thread, and can be threadedly connected to the fixed arm and / or the movable arm to fix the fixed arm and the movable arm in an expanded state; a locking matching portion that cooperates with the locking piece is provided on the fixed arm or the movable arm. When the threaded sleeve fixes the fixed arm and the movable arm in the expanded state, the locking piece cooperates with the locking matching portion to limit the rotation of the threaded sleeve relative to the fixed arm and / or the movable arm.

[0008] Optionally, the locking member is movably mounted on the threaded sleeve, and the locking member is connected to an elastic member, and the elastic member always provides the locking member with an elastic force that drives the locking member to cooperate with the locking mating portion.

[0009] Optionally, the locking member is rotatably mounted on the threaded sleeve, and the elastic member is a torsion spring, which includes an elastic portion and two torsion arms respectively connected to both ends of the elastic portion, wherein one of the torsion arms abuts against the threaded sleeve, and the other torsion arm abuts against the locking member to provide continuous elastic force to the locking member.

[0010] Optionally, the outer wall of the threaded sleeve is provided with two rotation mounting plates which are spaced apart from each other, and the locking member is rotationally mounted between the two rotation mounting plates.

[0011] Optionally, the outer wall of the threaded sleeve is provided with a fixing groove located between the two rotating mounting plates, wherein one of the torsion arms is inserted into the fixing groove to be fixed by the threaded sleeve.

[0012] Optionally, a fastening ring is provided in the threaded sleeve, and when the threaded sleeve locks the movable arm in the unfolded state, the fastening ring is interference fit with the fixed arm or the movable arm.

[0013] Optionally, an inner groove is provided on the inner wall of the threaded sleeve, and the fastening ring is clamped in the inner groove.

[0014] Optionally, a knob is provided on the outer wall of the threaded sleeve.

[0015] Optionally, the locking fitting portion includes two spaced-apart stoppers, with a locking groove formed between the two stoppers for clamping the locking member for locking; and guide surfaces for guiding the locking member to enter the locking groove are provided on opposite sides of the two stoppers.

[0016] Optionally, the external thread includes a first external thread portion provided on the fixed arm and a second external thread portion provided on the movable arm, and when the movable arm is in an expanded state, the first external thread portion and the second external thread portion are coaxial; the threaded sleeve of the connecting assembly can be threadedly connected to the first external thread portion and the second external thread portion to lock the movable arm in the expanded state.

[0017] Optionally, the fixed arm includes a connected fixed rod and a fixed connecting head, and the first external threaded portion is arranged on the fixed connecting head; the movable arm includes a connected movable rod and a movable connecting head, and the second external threaded portion is arranged on the movable connecting head; the fixed connecting head is hinged to the movable connecting head.

[0018] Optionally, the fixed connecting head comprises a connected connecting pipe and a half-tube segment, the first external threaded portion is arranged on the half-tube segment, and the movable connecting head is hinged to the half-tube segment.

[0019] Optionally, the locking fitting portion is arranged on the half-tube segment.

[0020] Optionally, the internal thread of the threaded sleeve includes a first internal threaded portion corresponding to the first external threaded portion and a second internal threaded portion corresponding to the second external threaded portion, the fixed connecting head is provided with a first avoidance space allowing the first internal threaded portion to be directly inserted, and the movable connecting head is provided with a second avoidance space allowing the second internal threaded portion to be directly inserted, and after the first internal threaded portion and the second internal threaded portion are respectively inserted into the first avoidance space and the second avoidance space, they can be aligned with the side ends of the first external threaded portion and the second external threaded portion respectively, so that the threaded sleeve can complete the threaded connection with the first external threaded portion and the second external threaded portion by rotating no more than 90°.

[0021] On the other hand, a drone is provided, comprising a fuselage and an arm connected to the fuselage on four sides, wherein the arm is the arm described above.

[0022] The beneficial effects of the present application are as follows: the present utility model provides an arm and a drone, the connection assembly includes a threaded sleeve and a locking member, when the fixed arm and the movable arm of the arm are unfolded, the threaded sleeve can be threadedly connected to the connection between the fixed arm and the movable arm, and the threaded connection can effectively improve the reliability of fixing the unfolded arm. Furthermore, the present solution also provides a locking member capable of locking the rotational freedom of the threaded sleeve, when the rotational freedom of the threaded sleeve is locked, the problem of the threaded sleeve loosening from the arm can be completely avoided, and the problem of the threaded sleeve loosening due to vibration during the flight of the drone, the failure of the fixation of the paired arms, and the resulting safety accidents can be effectively solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present application is further described in detail below based on the drawings and embodiments.

[0024] Figure 1 A structural diagram of a connection component according to an embodiment of the present application from one perspective

[0025] Figure 2 This is a structural schematic diagram of the connection component described in the embodiment of the present application from another perspective;

[0026] Figure 3 An exploded schematic diagram of a connection assembly according to an embodiment of the present application from one perspective;

[0027] Figure 4 An exploded schematic diagram of the connection assembly described in the embodiment of the present application from another perspective;

[0028] Figure 5 This is a schematic diagram of the structure when the machine arm according to the embodiment of the present application is unfolded and unlocked;

[0029] Figure 6 This is a schematic diagram of the structure when the machine arm according to the embodiment of the present application is unfolded and locked;

[0030] Figure 7 This is a structural schematic diagram of the fixed connector and the movable connector according to an embodiment of the present application being connected from a viewing angle;

[0031] Figure 8 A schematic structural diagram of the fixed connector and the movable connector of the embodiment of the present application being connected from another perspective;

[0032] Fig. 9 This is a schematic diagram of the structure of the movable connector according to an embodiment of the present application being rotated and folded relative to the fixed connector.

[0033] In the figure:

[0034] 10. Connecting assembly; 1. Threaded sleeve; 11. Internal thread; 111. First internal threaded portion; 112. Second internal threaded portion; 12. Rotatable mounting plate; 13. Fixed groove; 14. Knob paddle; 15. Internal slot; 2. Locking member; 3. Elastic member; 4. Fastening ring; 20. Fixed arm; 5. Fixed rod; 6. Fixed connector; 61. Connecting pipe; 62. Half pipe piece; 621. First external threaded portion; 622. First avoidance space; 623. Locking fitting portion; 6231. Stopper; 6232. Guide surface; 6233. Locking groove; 30. Movable arm; 7. Movable rod; 8. Movable connector; 81. Second external threaded portion; 82. Second avoidance space. DETAILED DESCRIPTION

[0035] In order to make the technical problems solved by this application, the technical solutions adopted, and the technical effects achieved more clearly, the technical solutions of the embodiments of this application are further described in detail below. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of this application.

[0036] In the description of this application, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" 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, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0037] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0038] The drone includes a fuselage and an arm extending outward from the fuselage. For the convenience of transportation, the arm is usually set to two foldable sections, a fixed section close to the fuselage and a free section away from the fuselage. A fixing structure is provided between the two sections of the arm to fix the relative positions of the two sections of the arm after the arm is unfolded to prevent the free section from shaking. In the existing arm fixing structure, generally only a simple sleeve is provided, and a clamping structure is respectively provided between the sleeve and the fixed section and the free section. After the free section is unfolded, the sleeve is sleeved at the connection between the fixed section and the free section and clamped and fixed. Obviously, in the existing arm fixing structure, after the drone has been working for a long time, it is affected by the vibration of the drone, and the clamping structure of the sleeve is prone to loose displacement, which leads to the failure of fixing the free section and causes the drone to crash. Therefore, it is necessary to provide a fixing structure with better reliability to reliably fix the unfolded free section.

[0039] In order to overcome the above technical problems, refer to Figure 1-4 The present embodiment provides an arm, which is provided with a connecting assembly 10 for locking the fixed arm 20 and the movable arm 30 of the drone arm in the unfolded state; the connecting assembly 10 of the present scheme includes a threaded sleeve 1 and a locking piece 2, the threaded sleeve 1 can be sleeved on the connection between the fixed arm 20 and the movable arm 30, and is equipped with a locking piece 2 for locking, which can effectively prevent the connecting assembly 10 from loosening from the connection between the fixed arm 20 and the movable arm 30.

[0040] In the specific structure of the connecting assembly 10 of this embodiment, the threaded sleeve 1 is provided with an internal thread 11 that cooperates with the external thread on the fixed arm 20 and / or the movable arm 30, and can be threadedly connected to the fixed arm 20 and the movable arm 30 to lock the machine arm in the expanded state; the fixed arm 20 or the movable arm 30 is provided with a locking matching portion 623 that cooperates with the locking piece 2. When the threaded sleeve 1 fixes the fixed arm 20 and the movable arm 30 in the expanded state, the locking piece 2 cooperates with the locking matching portion 623 to limit the rotation of the threaded sleeve 1 relative to the fixed arm 20 and / or the movable arm 30.

[0041] Specifically, in order to enable the threaded sleeve 1 to be threadedly connected to the connection between the fixed arm 20 and the movable arm 30, in the specific application arm structure, at least one of the connection between the fixed arm 20 and the movable arm 30 needs to be provided with an external thread, and after the movable arm 30 is unfolded, the threaded sleeve 1 can be threadedly connected to the fixed arm 20 and / or the movable arm 30 for fixation.

[0042] Compared with the traditional direct clamping or sleeve connection, the threaded connection using the threaded sleeve 1 can effectively improve the tightness and reliability of the connection. In order to prevent the thread from loosening, the present solution further provides a locking member 2, which can cooperate with a positioning structure provided on the fixed arm 20 or the movable arm 30. After the locking member 2 is locked by the positioning structure, the threaded sleeve 1 cannot rotate relative to the machine arm, thereby achieving the purpose of completely locking the threaded sleeve 1.

[0043] In summary, in the arm structure of this embodiment, after the fixed arm 20 and the movable arm 30 of the arm are unfolded, the threaded sleeve 1 can be threadedly connected to the connection between the fixed arm 20 and the movable arm 30, and the threaded connection can effectively improve the reliability of fixing the unfolded arm. Furthermore, this solution also provides a locking member 2 that can lock the rotational freedom of the threaded sleeve 1. When the rotational freedom of the threaded sleeve 1 is locked, the problem of the threaded sleeve 1 being loosened from the arm can be completely avoided, effectively solving the problem of the threaded sleeve 1 being loosened due to vibration during the flight of the drone, and the fixation of the paired arms failing, causing safety accidents.

[0044] In one embodiment, the locking member 2 is movably mounted on the threaded sleeve 1 , and the locking member 2 is connected to an elastic member 3 , and the elastic member 3 always provides the locking member 2 with an elastic force that drives the locking member 2 to cooperate with the locking mating portion 623 .

[0045] The locking member 2 is movably installed on the threaded sleeve 1, and can be a rotating installation or a sliding installation. Assuming that a positioning structure that can cooperate with the locking member 2 is provided on the fixed arm 20 (or the movable arm 30), when the locking member 2 is slidably installed, the elastic member 3 is a linear spring, which can push the locking member 2 to slide toward the positioning structure. Therefore, in the locked state, the locking member 2 can always maintain a locked cooperation with the positioning structure to prevent the locking member 2 from sliding freely and disengaging from the lock; when the locking member 2 is rotatably installed, the elastic member 3 is a torsion spring, which can push the locking member 2 to rotate toward the positioning structure. Similarly, in the locked state, the locking member 2 can always maintain a locked cooperation with the positioning structure to prevent the locking member 2 from rotating freely and disengaging from the lock.

[0046] In summary, the locking member 2 of the present solution is movably installed so that the locking member 2 can switch between locked and unlocked states through movement, and after locking, the elastic force of the elastic member 3 can be used to maintain the locking state, thereby effectively improving the reliability of locking the threaded sleeve 1.

[0047] In one embodiment, referring to Figure 2-3 The locking member 2 is rotatably mounted on the threaded sleeve 1, and the elastic member 3 is a torsion spring, which includes an elastic portion and two torsion arms respectively connected to the two ends of the elastic portion, wherein one of the torsion arms abuts against the threaded sleeve 1, and the other torsion arm abuts against the locking member 2 to provide continuous elastic force to the locking member 2.

[0048] Specifically, when the locking member 2 is in a locked state, the user can rotate it to a position away from the positioning structure on the arm through manual operation or other means. In this process, the elastic part of the torsion spring will be twisted and store energy. After the locking member 2 is released, the torsion spring will release the stored energy and provide continuous elastic force to the locking member 2 through the torsion arm abutting against the locking member 2, so that it enters a locked state. This design can ensure that even when the unmanned aerial vehicle encounters adverse factors such as vibration during flight, the locking member 2 can maintain a close fit with the positioning structure to prevent the connection assembly 10 from loosening or falling off. In summary, in this embodiment, since the elastic force of the torsion spring is continuously provided, the locking member 2 can maintain a stable locking effect in the locked state. At the same time, this design also allows the user to unlock the connection assembly 10 through simple operations (such as rotating the locking member 2) without the need to use additional tools or equipment, thereby improving the convenience of use.

[0049] In one embodiment, referring to Figure 2 The outer wall of the threaded sleeve 1 is provided with two spaced apart rotating mounting plates 12 , and the locking member 2 is rotatably mounted between the two rotating mounting plates 12 .

[0050] The rotating mounting plate 12 provides a clear mounting and rotating platform for the locking member 2, so that the locking member 2 can be reliably mounted on the threaded sleeve 1. Preferably, the locking member 2 is connected to a rotating shaft, and both ends of the rotating shaft are respectively hinged to the rotating mounting plates 12 on both sides, and the elastic part of the torsion spring is sleeved on the rotating shaft.

[0051] In one embodiment, referring to Figure 4 The outer wall of the threaded sleeve 1 is provided with a fixing groove 13 located between the two rotating mounting plates 12 , and one of the torsion arms is inserted into the fixing groove 13 to be fixed by the threaded sleeve 1 .

[0052] A fixing groove 13 is provided between the two rotating mounting plates 12, so that a torsion arm of the torsion spring can be stuck in the fixing groove 13 for fixing, ensuring that when the locking member 2 is rotated to unlock, the torsion arm fixed in the fixing groove 13 can remain fixed, so that the torsion spring can store energy stably. Therefore, the provision of the fixing groove 13 helps to improve the reliability of the torsion spring installation.

[0053] In one embodiment, a fastening ring 4 is disposed in the threaded sleeve 1 . When the threaded sleeve 1 locks the movable arm 30 in the unfolded state, the fastening ring 4 is interference-fitted with the fixed arm 20 or the movable arm 30 .

[0054] Specifically, the fastening ring 4 is an annular structure designed inside the threaded sleeve 1, and its inner diameter is slightly smaller than the outer diameter of the connection between the fixed arm 20 and the movable arm 30. When the threaded sleeve 1 is installed to a position where the aircraft arm can be locked in the unfolded state, the fastening ring 4 inside the threaded sleeve 1 is interference-fitted at the connection between the fixed arm 20 and the movable arm 30, which can effectively improve the tightness of the connection between the fixed arm 20 and the movable arm 30, avoid the existence of a movable gap between the fixed arm 20 and the movable arm 30, and thereby avoid the problem of shaking of the movable arm 30 during flight.

[0055] In one embodiment, an inner groove 15 is provided on the inner wall of the threaded sleeve 1 , and the fastening ring 4 is clamped in the inner groove 15 .

[0056] The fastening ring 4 and the machine arm are in an interference fit, and a large friction will occur between the fastening ring 4 and the machine arm during installation, so the fastening ring 4 is a wear-prone part. In this solution, the fastening ring 4 is set as a structure that can be assembled separately in the threaded sleeve 1. When the fastening ring 4 is worn, it can be replaced separately, and the threaded sleeve 1 and the locking member 2, elastic member 3, etc. installed on the threaded sleeve 1 remain unchanged, thereby achieving the effect of reducing maintenance costs. Preferably, the fasteners are made of more wear-resistant metal parts or hard plastic parts.

[0057] In other embodiments, the fastening ring 4 may also be a structure that is integrally injection-molded with the threaded sleeve 1. This structure has the advantage of low production cost.

[0058] In one embodiment, a knob 14 is disposed on the outer wall of the threaded sleeve 1 .

[0059] A knob paddle 14 is provided on the outer wall of the threaded sleeve 1 to facilitate the user to manually twist the threaded sleeve 1 during installation.

[0060] Preferably, the knob paddle 14 is disposed on a side of the threaded sleeve 1 opposite to the rotating mounting plate 12 , and the user can easily rotate the threaded sleeve 1 using the knob paddle 14 and the rotating mounting plate 12 at the same time.

[0061] In one embodiment, referring to Figure 7The locking fitting portion 623 includes two spaced-apart stoppers 6231 , and a locking groove 6233 capable of clamping the locking member 2 for locking is formed between the two stoppers 6231 ; guide surfaces 6232 for guiding the locking member 2 into the locking groove 6233 are provided on opposite sides of the two stoppers 6231 .

[0062] Specifically, when the locking member 2 is locked, it is stuck in the locking groove 6233, and the locking member 2 cannot rotate relative to the fixed connector 6, thereby limiting the rotational freedom of the threaded sleeve 1 and achieving the purpose of preventing the thread from loosening. This structure sets a guide surface 6232 on the opposite side of the stopper 6231. When tightening the threaded sleeve 1, the guide surface 6232 can guide the locking member 2 to rotate and open to overcome the elastic force of the elastic member 3. After the locking block passes over the stopper 6231, the elastic force of the elastic member 3 quickly pushes the locking member 2 into the locking groove 6233 for locking. Therefore, this structure does not require manual unlocking of the locking member 2 during installation, which facilitates the installation operation. On the contrary, when disassembling, the locking member 2 needs to be unlocked by manual unlocking before the threaded sleeve 1 can be rotated and opened.

[0063] In one embodiment, the external thread includes a first external thread portion 621 provided on the fixed arm 20, and a second external thread portion 81 provided on the movable arm 30, and when the movable arm 30 is in the expanded state, the first external thread portion 621 and the second external thread portion 81 are coaxial; the threaded sleeve 1 of the connecting assembly 10 can be threadedly connected to the first external thread portion 621 and the second external thread portion 81 to lock the movable arm 30 in the expanded state; the fixed arm 20 or the movable arm 30 is provided with a locking fitting portion 623 that can cooperate with the locking member 2 of the connecting assembly 10, and the locking member 2 cooperates with the locking fitting portion 623 to lock the rotational freedom of the threaded sleeve 1.

[0064] A first external threaded portion 621 and a second external threaded portion 81 are respectively provided on the fixed arm 20 and the movable arm 30 , and the threaded sleeve 1 can be threadedly connected to the fixed arm 20 and the movable arm 30 at the same time. This structure is beneficial to effectively improve the reliability of the connection between the threaded sleeve 1 and the fixed arm 20 and the movable arm 30 .

[0065] In one embodiment, the fixed arm 20 includes a connected fixed rod 5 and a fixed connecting head 6, and the first external threaded portion 621 is arranged on the fixed connecting head 6; the movable arm 30 includes a connected movable rod 7 and a movable connecting head 8, and the second external threaded portion 81 is arranged on the movable connecting head 8; the fixed connecting head 6 is hinged to the movable connecting head 8.

[0066] Specifically, the fixed rod 5 and the movable rod 7 are tubular structures, which can be formed by extrusion alone, which is simpler to process and has lower cost; the fixed connector 6 and the movable connector 8 need to be hinged, and need to form a first external threaded portion 621, a second external threaded portion 81 and other structures to cooperate with the threaded sleeve 1, which has a relatively complex structure and can be formed by injection molding alone, which has the advantage of easy molding. In summary, the combined structure of the fixed arm 20 and the movable arm 30 of this solution has the advantages of easy processing and low cost.

[0067] In one embodiment, referring to Figure 7-9 The fixed connector 6 includes a connected connecting pipe 61 and a half-tube segment 62 , the first external threaded portion 621 is disposed on the half-tube segment 62 , and the movable connector 8 is hinged to the half-tube segment 62 .

[0068] Specifically, a half-tube segment 62 is arranged on the fixed connecting head 6. After the movable connecting head 8 is rotated to the expanded position, the half-tube segment 62 just covers one side of the movable connecting head 8. At this time, the first external threaded portion 621 arranged on the half-tube segment 62 and the second external threaded portion 81 arranged on the movable connecting head 8 are just coaxial. When the threaded sleeve 1 is rotated to cover the first external threaded portion 621 and the second external threaded portion 81, the threaded sleeve 1 locks and fixes the half-tube segment 62 and the part of the movable connecting head 8 covered by the half-tube segment 62, thereby completing the locking of the movable connecting head 8.

[0069] This structure sets a half pipe piece 62 on the fixed connector 6 to cover the side of the movable connector 8, which can provide a setting space for the first external threaded portion 621, and at the same time can effectively increase the connection area between the fixed connector 6 and the movable connector 8, thereby improving the reliability of the connection between the fixed connector 6 and the movable connector 8.

[0070] In one embodiment, the locking fitting portion 623 is disposed on the half-tube piece 62 .

[0071] The locking fitting portion 623 is provided on the half pipe piece 62, referring to Figure 5 , the threaded sleeve 1 can be sleeved on the movable arm 30, and after the movable arm 30 is unfolded, the threaded sleeve 1 is pushed toward the fixed connector 6 and screwed, and then the locking member 2 is locked on the locking matching portion 623 on the half pipe segment 62. In this structure, the half pipe segment 62 is located at the outermost side of the entire connection structure, and the locking matching portion 623 is arranged on the half pipe segment 62, which will not cause any interference to the tightening of the threaded sleeve 1, and facilitates the disassembly and assembly of the threaded sleeve 1.

[0072] In one embodiment, in combination Figure 3 , Figure 7 and Figure 8The internal thread 11 of the threaded sleeve 1 includes a first internal threaded portion 111 corresponding to the first external threaded portion 621 and a second internal threaded portion 112 corresponding to the second external threaded portion 81. The fixed connector 6 is provided with a first avoidance space 622 allowing the first internal threaded portion 111 to be directly inserted therein, and the movable connector 8 is provided with a second avoidance space 82 allowing the second internal threaded portion 112 to be directly inserted therein. After the first internal threaded portion 111 and the second internal threaded portion 112 are respectively inserted into the first avoidance space 622 and the second avoidance space 82, they can be aligned with the side ends of the first external threaded portion 621 and the second external threaded portion 81, respectively, so that the threaded sleeve 1 can complete the threaded connection with the first external threaded portion 621 and the second external threaded portion 81 by a rotation of no more than 90°.

[0073] Specifically, based on the setting of the first avoidance space 622 and the second avoidance space 82, the first internal thread 111 and the second internal thread 112 of the present scheme can respectively be provided with multiple thread grooves to improve the stability of the thread screwing. When rotating the threaded sleeve 1, the first internal thread portion 111 and the second internal thread portion 112 can be directly aligned with the first avoidance space 622 and the second avoidance space 82, and then the threaded sleeve 1 can be rotated no more than 90° to directly complete the screwing of all threads. Obviously, this structure effectively speeds up the screwing efficiency on the basis of ensuring the stability of the thread screwing, and facilitates users to perform efficient arm deployment and fixing operations.

[0074] On the other hand, this embodiment also provides a drone, including a fuselage and an arm connected to the fuselage, wherein the arm is the arm mentioned above.

[0075] Based on the above arms, the drone of this embodiment also has the advantage of good stability after the arms are unfolded.

[0076] In the description of this article, it should be understood that the terms "upper", "lower", "left", "right", etc., and other directions or positional relationships are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of this application. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0077] In the description of this specification, the description with reference to the terms "an embodiment", "example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0078] In addition, it should be understood that although this specification is described according to implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0079] The technical principles of the present application are described above in conjunction with specific embodiments. These descriptions are only for explaining the principles of the present application and cannot be interpreted as limiting the scope of protection of the present application in any way. Based on the explanations herein, those skilled in the art can think of other specific implementation methods of the present application without creative work, and these methods will fall within the scope of protection of the present application.

Claims

1. A machine arm, characterized in that: include: At least one of the fixed arm (20) and the movable arm (30) is provided with an external thread; A connecting assembly (10) comprises a threaded sleeve (1) and a locking member (2); the threaded sleeve (1) is provided with an internal thread (11) cooperating with the external thread, and can be threadedly connected to the fixed arm (20) and / or the movable arm (30) to fix the fixed arm (20) and the movable arm (30) in an extended state; the fixed arm (20) or the movable arm (30) is provided with a locking fitting portion (623) cooperating with the locking member (2); when the threaded sleeve (1) fixes the fixed arm (20) and the movable arm (30) in the extended state, the locking member (2) cooperates with the locking fitting portion (623) to limit the rotation of the threaded sleeve (1) relative to the fixed arm (20) and / or the movable arm (30).

2. The machine arm according to claim 1, characterized in that: The locking member (2) is movably mounted on the threaded sleeve (1), and the locking member (2) is connected to an elastic member (3). The elastic member (3) always provides the locking member (2) with an elastic force that drives the locking member (2) to cooperate with the locking matching portion (623).

3. The machine arm according to claim 2, characterized in that: The locking member (2) is rotatably mounted on the threaded sleeve (1); the elastic member (3) is a torsion spring, comprising an elastic portion and two torsion arms respectively connected to two ends of the elastic portion, wherein one of the torsion arms abuts against the threaded sleeve (1), and the other torsion arm abuts against the locking member (2) to provide a continuous elastic force to the locking member (2).

4. The machine arm according to claim 3, characterized in that: The outer wall of the threaded sleeve (1) is provided with two rotational mounting plates (12) arranged at intervals, and the locking member (2) is rotationally mounted between the two rotational mounting plates (12).

5. The machine arm according to claim 4, characterized in that: The outer wall of the threaded sleeve (1) is provided with a fixing groove (13) located between the two rotating mounting plates (12), wherein one of the torsion arms is inserted into the fixing groove (13) to be fixed by the threaded sleeve (1).

6. The machine arm according to claim 1, characterized in that: A fastening ring (4) is arranged inside the threaded sleeve (1); when the threaded sleeve (1) locks the movable arm (30) in an unfolded state, the fastening ring (4) is interference-fitted with the fixed arm (20) or the movable arm (30).

7. The machine arm according to claim 6, characterized in that: The inner wall of the threaded sleeve (1) is provided with an inner groove (15), and the fastening ring (4) is clamped in the inner groove (15).

8. The machine arm according to claim 1, characterized in that: The outer wall of the threaded sleeve (1) is provided with a knob paddle (14).

9. The machine arm according to claim 1, characterized in that: The locking fitting portion (623) comprises two spaced-apart stoppers (6231), wherein a locking groove (6233) capable of clamping the locking member (2) for locking is formed between the two stoppers (6231); and guide surfaces (6232) for guiding the locking member (2) to enter the locking groove (6233) are provided on opposite sides of the two stoppers (6231).

10. The machine arm according to claim 1, characterized in that: The external thread comprises a first external thread portion (621) provided on the fixed arm (20) and a second external thread portion (81) provided on the movable arm (30); when the movable arm (30) is in an extended state, the first external thread portion (621) and the second external thread portion (81) are coaxial; the threaded sleeve (1) of the connecting assembly (10) can be threadedly connected to the first external thread portion (621) and the second external thread portion (81) to lock the movable arm (30) in the extended state.

11. The machine arm according to claim 10, characterized in that: The fixed arm (20) comprises a fixed rod (5) and a fixed connecting head (6) connected to each other, and the first external threaded portion (621) is arranged on the fixed connecting head (6); the movable arm (30) comprises a movable rod (7) and a movable connecting head (8) connected to each other, and the second external threaded portion (81) is arranged on the movable connecting head (8); the fixed connecting head (6) is hinged to the movable connecting head (8).

12. The machine arm according to claim 11, characterized in that: The fixed connection head (6) comprises a connected connection pipe (61) and a half-tube segment (62); the first external threaded portion (621) is arranged on the half-tube segment (62); and the movable connection head (8) is hingedly connected to the half-tube segment (62).

13. The machine arm according to claim 12, characterized in that: The locking fitting portion (623) is arranged on the half pipe segment (62).

14. The machine arm according to claim 11, characterized in that: The internal thread (11) of the threaded sleeve (1) comprises a first internal threaded portion (111) corresponding to the first external threaded portion (621) and a second internal threaded portion (112) corresponding to the second external threaded portion (81); the fixed connection head (6) is provided with a first avoidance space (622) allowing the first internal threaded portion (111) to be directly inserted therein; the movable connection head (8) is provided with a second avoidance space (82) allowing the second internal threaded portion (112) to be directly inserted therein; after the first internal threaded portion (111) and the second internal threaded portion (112) are respectively inserted into the first avoidance space (622) and the second avoidance space (82), they can be respectively aligned with the side ends of the first external threaded portion (621) and the second external threaded portion (81), so that the threaded sleeve (1) can be threadedly connected with the first external threaded portion (621) and the second external threaded portion (81) by a rotation of no more than 90 degrees.

15. A drone, characterized in that: It comprises a fuselage and an arm connected to the fuselage on four sides, and the arm is the arm described in any one of claims 1-14.

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