Fixed-rotation-center type multi-axis full-flexible hinge of series structure

[0017]Example one:

[0018]This examplefigure 1 As shown, the fixed rotation center multi-axis fully flexible hinge of the series structure includes an upper connecting part (2), two middle connecting parts (4) and a lower connecting part (5) connected in series with three flexure hinges (3). The upper connecting part (2) and the lower connecting part (5) are provided with an upper connecting hole (1) and a lower connecting hole (6) which are convenient to connect with other mechanisms. The upper connecting portion (2), the middle connecting portion (4) and the lower connecting portion (5) are all three-layer composite structures, including two upper and lower rigid boards, and a flexible film in the middle. The three flexure hinges (3) are obtained by cutting a long strip between the front and back of the composite board at the same position between the two connecting parts, exposing the flexible film in the middle, and forming a long thin-walled structure with both ends penetrating. The connecting parts on both sides can rotate around the long thin-walled structure. The rotation axis of the three flexure hinges (3) and the installation axis of the upper and lower connecting parts intersect at a point in the space to form the fixed rotation center of the hinge. The installation axes of the upper and lower connecting parts are the upper and lower connecting parts. The connection between the upper connecting hole (1) and the lower connecting hole (6) of the hinge and the intersection in the space when the other mechanisms of the hinge are connected. In this embodiment, the fixed rotation center multi-axis fully flexible hinge of the series structure can serve as a ball hinge.

[0019]Embodiment two:

[0020]This examplefigure 2 As shown, the fixed rotation center multi-axis fully flexible hinge of the series structure includes an upper connecting portion (2), a middle connecting portion (4) and a lower connecting portion (5) connected in series with two flexure hinges (3), and the upper connecting portion (2) The upper connecting hole (1) and the lower connecting hole (6) are arranged on the lower connecting part (5) to facilitate the connection with other mechanisms. The middle connecting part (4), the upper connecting part (2) and the lower connecting part (5) are all three-layer composite structures, including two upper and lower rigid boards and a flexible film in the middle. The two flexure hinges (3) are obtained by cutting a strip between the front and back of the composite board at the same position between the two connecting parts, exposing the flexible film in the middle, and forming a long thin-walled structure with both ends penetrating. The connecting parts on both sides can rotate around the long thin-walled structure. The rotation axis of the two flexure hinges (3) and the installation axis of the upper and lower connecting parts intersect at a point in the space to form the fixed rotation center of the hinge. The installation axes of the upper and lower connecting parts are the upper and lower connecting parts. The connection between the upper connecting hole (1) and the lower connecting hole (6) of the hinge and the intersection in the space when the other mechanisms of the hinge are connected. In this embodiment, the fixed rotation center multi-axis fully flexible hinge of the series structure can serve as a Hooke hinge.

[0021]The composite board used in the first and second embodiments and the flexible hinge obtained by cutting are such asimage 3 As shown, the composite board uses a hard board (7) as the upper and lower layers, and a flexible film (8) as the middle layer, which is formed by lamination and hot pressing. Cut the hard board material at the same position on the front and back of the composite board to obtain a long thin-walled flexible hinge (3).

[0022]Example three:

[0023]This exampleFigure 4 As shown, the fixed rotation center multi-axis fully flexible hinge of the series structure is a whole, and the flexible hinge (3) is formed by directly processing three long grooves on the plate material. The rotation of the three flexible hinges (3) The axis intersects at a point in space, and the intersection point in space is the fixed rotation center of the multi-axis fully flexible hinge. The fixed rotation center multi-axis fully flexible hinge of the series structure can act as a ball hinge.