A folding mechanism

Abstract

The utility model discloses a folding mechanism relates to unmanned plane bar folding technical field, the utility model discloses a first bar, second bar, the end of first bar and second bar all is fixed with the connecting cylinder cover, and the side edge of two connecting cylinder covers is hinged to make first bar and second bar connected with it can extend or fold, the utility model discloses through trapezoidal key and trapezoidal groove, utilize two waist side of trapezoidal key and can realize the extrusion of the inclined plane on trapezoidal groove, and further realize the positioning of another direction, utilize the positioning inclined plane and positioning extrusion surface to realize the positioning in another direction simultaneously, the design structure guarantees the butt joint gap of two connecting cylinder cover when unfolding to be in the state of smaller as far as possible, and further guarantees the butt joint gap between first bar and second bar, to ensure that the propeller located in the end does not deviate the position on design drawing too much.

Claims

1. A folding mechanism comprising a first lever (1), a second lever (2), characterized in that, The ends of the first rod (1) and the second rod (2) are fixed with connecting sleeves (3). The sides of the two connecting sleeves (3) are hinged so that the first rod (1) and the second rod (2) connected to them can be extended or folded. The two sides of the connecting sleeves (3) with the hinge point as the center of symmetry are provided with positioning mechanisms (4). The positioning mechanisms (4) are used to ensure the position positioning of the two connecting sleeves (3) after they are extended and aligned. The positioning mechanisms (4) also include locking mechanisms (5) to lock the connection of the two connecting sleeves (3).

2. A folding mechanism according to claim 1, wherein The positioning mechanism (4) includes a first positioning structure (41) and a second positioning structure (42) for positioning the cross-sectional position of the two connecting sleeves (3) when they are extended. The first positioning structure (41) is used to ensure the lateral position of the two connecting sleeves (3) when they are extended and connected, and the second positioning structure (42) is used to ensure the longitudinal position of the two connecting sleeves (3) when they are extended and connected.

3. A folding mechanism according to claim 2, wherein The first positioning structure (41) includes two first positioning blocks (411) symmetrically fixed on the side of one of the connecting sleeves (3) and two second positioning blocks (412) symmetrically fixed on the side of the other connecting sleeve (3). The first positioning blocks (411) and the second positioning blocks (412) are positioned corresponding to each other when the two connecting sleeves (3) are extended and connected. The first positioning block (411) is provided with a trapezoidal key (413) protruding from the top surface of the connecting sleeve (3). The second positioning block (412) corresponding to the first positioning block (411) is provided with a trapezoidal groove (414) for inserting the trapezoidal key (413).

4. A folding mechanism according to claim 3, wherein The second positioning structure (42) includes a positioning inclined surface (421) and a positioning pressing surface (422). The positioning inclined surface (421) is a side inclined surface constructed on the trapezoidal key (413), and the positioning pressing surface (422) is a side inclined surface constructed on the trapezoidal groove (414).

5. The folding mechanism of claim 1, wherein, The locking mechanism (5) includes a first protrusion (51) and a second protrusion (52) located on opposite sides of the hinge point of the two connecting sleeves (3). A rotating shaft (53) is rotatably passed through the first protrusion (51). The rotating shaft (53) is fixedly mounted on a pressing plate (54) so ​​that the pressing plate (54) can rotate around the axis of the rotating shaft (53). A torsion spring (55) is provided on the rotating sleeve. The torsion spring (55) is used to force the pressing plate (54) to rotate toward the other connecting sleeve (3). A connecting rod (56) is also hinged to the end of the pressing plate (54). The other end of the connecting rod (56) is hinged to the second protrusion (52).

6. A folding mechanism according to claim 5, wherein The inner side of the pressing plate (54) has a rod groove (57), and the connecting rod (56) can be placed in the rod groove (57) when the pressing plate (54) is close to the connecting sleeve (3).

Images