Unmanned aerial vehicle arm folding mechanism

Abstract

The unmanned aerial vehicle arm folding mechanism comprises a vehicle body connecting piece, a vehicle arm connecting piece, a locking piece and a spring push rod, the vehicle arm connecting piece is rotationally arranged on the vehicle body connecting piece, an unfolding limiting groove and a folding limiting groove are formed in the outer side of the vehicle arm connecting piece in the circumferential direction, and the spring push rod is arranged on the vehicle body connecting piece. The locking piece is arranged at the front end of the spring push rod, and the spring push rod can push the locking piece to be inserted into the unfolding limiting groove or the folding limiting groove by rotating the arm connecting piece. According to the unmanned aerial vehicle arm folding mechanism, the unfolding limiting grooves and the folding limiting grooves are formed in the outer sides of the arm connecting pieces in the circumferential direction, when the unmanned aerial vehicle arm folding mechanism is unfolded and folded, the spring push rods are used for pushing the locking pieces to be inserted into the corresponding limiting grooves to lock the arm connecting pieces, and the unfolding and folding purposes are achieved; and the spring push rod can provide a certain pre-tightening force.

Description

TECHNICAL FIELD

[0001] The utility model belongs to unmanned plane technical field, especially relate to a unmanned plane arm folding mechanism. BACKGROUND

[0002] In order to reach the purpose of extreme folding of unmanned plane, need to fold in the arm root, still need to lock after folding arm. The arm folding mode of current market application is various, but all has respective defect, especially in the case of long time application, along with the plastic deformation of arm folding piece, there will be the phenomenon of loosening. In order to reach the purpose of extreme folding, and can connect the fuselage and arm perfectly, realize the function of long-term application not loosening, need to design the folding mechanism of unmanned plane arm again. CONTENT OF UTILITY MODEL

[0003] Therefore, the utility model aims at the deficiency of prior art, provides a unmanned plane arm folding mechanism with pre-tightening force.

[0004] In order to achieve the above object, the utility model adopts the following technical scheme:

[0005] A unmanned plane arm folding mechanism, including fuselage connecting piece, arm connecting piece, locking piece and spring push rod, arm connecting piece is rotationally arranged on fuselage connecting piece, and the outer side of arm connecting piece is provided with unfolding limiting slot and folding limiting slot along the circumferential direction, spring push rod is arranged on fuselage connecting piece, locking piece is arranged at the front end of spring push rod, and rotating arm connecting piece can make spring push rod push locking piece to insert into unfolding limiting slot or folding limiting slot.

[0006] In order to better realize the utility model, further optimization is made in the above structure, and the arm connecting piece is rotationally arranged on the fuselage connecting piece through the connecting pin.

[0007] In order to better realize the utility model, further optimization is made in the above structure, and the locking piece is a locking pin shaft.

[0008] In order to better realize the utility model, further optimization is made in the above structure, and two sliding grooves are symmetrically provided on the fuselage connecting piece, the two ends of the locking pin shaft are respectively inserted into the two sliding grooves, and the spring push rod pushes the locking pin shaft to be slidingly connected with the two sliding grooves.

[0009] In order to better realize the utility model, further optimization is made in the above structure, and the unfolding limiting slot is a conical structure.

[0010] In order to better realize the utility model, further optimization is made in the above structure, and the taper angle of the unfolding limiting slot is 4 degrees.

[0011] In order to better realize the utility model, the reinforcing part is embedded on the arm connecting piece in the above structure.

[0012] In order to better realize the utility model, the reinforcing part is embedded on the arm connecting piece in the above structure.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] The unmanned aerial vehicle arm folding mechanism provided by the utility model has the advantages that the unfolding limiting grooves and the folding limiting grooves are arranged on the outer side of the arm connecting piece in the circumferential direction, the arm connecting piece is locked by inserting the locking part into the corresponding limiting groove by using the spring push rod when unfolding and folding, the purpose of unfolding and folding is achieved, and the spring push rod can provide certain pre-tightening force. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced as follows, and obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained according to the drawings without creative labor for those skilled in the art.

[0016] Figure 1 is the isometric view of the unmanned aerial vehicle arm folding mechanism of the utility model;

[0017] Figure 2 is the front view of the unmanned aerial vehicle arm folding mechanism of the utility model;

[0018] Figure 3 is Figure 2 the sectional view of A-A in the utility model;

[0019] Figure 4 is the structural schematic view of the arm connecting piece in the utility model;

[0020] Figure 5 is the connecting structure schematic view of the arm connecting piece and the locking part in the utility model.

[0021] In the drawings:

[0022] 1-arm connecting piece, 101-sliding groove, 2-arm connecting piece, 201-reinforcing part, 3-locking part, 4-spring push rod, 5-unfolding limiting groove, 6-folding limiting groove, 7-connecting pin. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the utility model clearer, the technical scheme of the utility model will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope protected by the utility model.

[0024] In the description of the utility model, it needs to be explained that, unless otherwise stated, the meaning of "multiple" is two or more than two; the orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and cannot be understood as indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second", "third" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0025] In the description of the utility model, it also needs to be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0026] Please refer to Figure 1 Figure 5 The utility model provides unmanned aerial vehicle arm folding mechanism, including fuselage connecting piece 1, arm connecting piece 2, locking piece 3 and spring push rod 4, fuselage connecting piece 1 is fixed end as a part of fuselage, arm connecting piece 2 is execution end as a part of arm, arm connecting piece 2 is rotatably arranged on fuselage connecting piece 1 through connecting pin 7, and the unfolding and folding of unmanned aerial vehicle arm are realized by rotating arm connecting piece 2.

[0027] As Figure 4 Shown, the outside of arm connecting piece 2 is provided with unfolding limiting slot 5 and folding limiting slot 6 along the circumferential direction, spring push rod 4 is arranged on fuselage connecting piece 1, locking piece 3 is arranged at the front end of spring push rod 4, and rotating arm connecting piece 2 can make spring push rod 4 push locking piece 3 to insert into unfolding limiting slot 5 or folding limiting slot 6, when locking piece 3 inserts into unfolding limiting slot 5, unmanned aerial vehicle arm is in the unfolded state, when locking piece 3 inserts into folding limiting slot 6, unmanned aerial vehicle arm is in the folded state.

[0028] like Figure 5 As shown, in this embodiment, the locking component 3 is a locking pin. Two sliding grooves 101 are symmetrically provided on the body connecting component 1. The two ends of the locking pin are respectively inserted into the two sliding grooves 101, and the spring push rod 4 pushes the locking pin to slide and connect with the two sliding grooves 101.

[0029] In this embodiment, the expansion limiting groove 5 is a conical structure with a conical inclination angle of 4 degrees. The conical inclination angle generates a self-locking effect. As the locking pin goes deeper, the locking effect becomes more and more secure. When the arm vibrates or the parts undergo plastic deformation under long-term use, the locking pin will continue to go deeper to lock the body connector 1 and the arm connector 2 under the action of the spring push rod 4.

[0030] To enhance the fit between the locking pin and the arm connector 2, a reinforcing member 201 is embedded in the arm connector 2. An expansion limiting groove 5 is provided on the reinforcing member 201. The reinforcing member 201 improves the structural strength and hardness of the connection, reducing the degree of plastic deformation. The reinforcing member 201 is fastened to the arm connector 2 with screws.

[0031] Working principle:

[0032] When the arm is extended, pull the spring push rod 4 outward to disengage the locking part 3 from the folding limit groove 6. Then rotate the arm connecting part 2 clockwise. When the locking part 3 is aligned with the extension limit groove 5, release the spring push rod 4. Under the action of the elastic force, push the locking part 3 into the extension limit groove 5 to lock it.

[0033] When folding the arm, pull the spring push rod 4 outward to disengage the locking part 3 from the unfolding limit groove 5. Then rotate the arm connector 2 counterclockwise. When the locking part 3 is aligned with the folding limit groove 6, release the spring push rod 4. Under the action of the elastic force, push the locking part 3 into the folding limit groove 6 to lock it.

[0034] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A UAV arm folding mechanism, characterized in that: The utility model provides a foldable arm connecting piece, including fuselage connecting piece (1), arm connecting piece (2), locking piece (3) and spring push rod (4), arm connecting piece (2) rotation is arranged on fuselage connecting piece (1), the outside of arm connecting piece (2) is set up with unfolding limiting slot (5) and folding limiting slot (6) along the circumferential direction, spring push rod (4) is set up on fuselage connecting piece (1), locking piece (3) is set up in spring push rod (4) front end, rotation arm connecting piece (2) can make spring push rod (4) push locking piece (3) and insert in unfolding limiting slot (5) or folding limiting slot (6) inside.

2. The unmanned aerial vehicle arm folding mechanism of claim 1, wherein: The arm connecting piece (2) is rotationally arranged on the fuselage connecting piece (1) through a connecting pin (7).

3. The unmanned aerial vehicle arm folding mechanism of claim 2, wherein: The locking piece (3) is a locking pin shaft.

4. The unmanned aerial vehicle arm folding mechanism of claim 3, wherein: Two sliding grooves (101) are symmetrically formed on the fuselage connecting piece (1), both ends of the locking pin shaft are respectively inserted into the two sliding grooves (101), and the spring push rod (4) pushes the locking pin shaft to be in sliding connection with the two sliding grooves (101).

5. The folding mechanism of any one of claims 1-4, wherein: The unfolding limiting slot (5) is a conical structure.

6. The unmanned aerial vehicle arm folding mechanism of claim 5, wherein: The conical angle of the unfolding limiting slot (5) is 4 degrees.

7. The unmanned aerial vehicle arm folding mechanism of claim 6, wherein: The arm connecting piece (2) is inlaid with a reinforcing member (201), and the unfolding limiting slot (5) is arranged on the reinforcing member (201).

8. The unmanned aerial vehicle arm folding mechanism of claim 7, wherein: The reinforcing member (201) and the arm connecting piece (2) are tightly connected through screws.

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