Patent Disclosure of Oppo Folding Screen
Due to the advantages of large viewing screen and convenient carrying, folding electronic equipment has become a research hotspot in recent years, but there are also many technical difficulties in the research process, and the matching of rotating shaft and flexible screen is one of the difficulties. Specifically, when folding electronic equipment, the radius of the outermost layer at the rotating shaft is always less than the radius of the neutral layer of the flexible screen. At normal development, the length of the outermost layer at the rotating shaft is always less than the length of the corresponding part of the flexible screen, resulting in easy warping at the middle position corresponding to the flexible screen and the rotating shaft, and it is difficult for the flexible screen to match the structural parts well.
In order to solve this problem, the patent provides a folding mechanism and mobile terminal that match the flexible screen well. The following figure is the schematic diagram of the mobile terminal.Figure 1
As shown in Fig. 1, the folding mechanism 1000 includes a first housing 10, a second housing 20, a rotating assembly 40 and a third housing 30; The first housing 10 and the second housing 20 are coaxially connected with the rotating assembly 40, the third housing 30 is slidably matched with the second housing 20, and the third housing 30 drives the second housing 20 to rotate relative to the rotating shaft 42; The folding mechanism 1000 includes a flattened state and a folded state. The folding mechanism 1000 switches from the flattened state to the folded state, the third housing 30 slides laterally along the second housing 20 in the direction close to the rotating assembly 40, the folding mechanism 1000 switches from the folded state to the flattened state, and the third housing 30 slides laterally along the second housing 20 away from the rotating assembly to match the folding of the flexible screen 70.
Specifically, the sum of the transverse length of the first housing 10 and the distance from the third housing 30 to the rotation center of the rotating assembly 40 must always be consistent with the length of the flexible screen 70. Since the length of the flexible screen 70 remains unchanged, when the folding mechanism 1000 switches from the flattened state to the folded state, the arc length at the corner is increased between the first housing 10 and the second housing 20. At this time, The flexible screen 70 drives the third housing 20 to move close to the rotating assembly 40 to reduce the distance from the third housing 30 to the rotating center of the rotating assembly 40 to match the length of the flexible screen 70.
In the folding mechanism 1000, since the third housing 30 can slide laterally along the second housing 20, taking supporting the flexible screen 70 as an example, when the folding mechanism 1000 switches between the folded state and the flattened state, the third housing 30 and the flexible screen 70 slide laterally along the second housing 20 synchronously, which can ensure that the distance between the first housing 10 and the third housing 30 always matches the length of the flexible screen 70, Therefore, the flattening and folding of the flexible screen 70 can be better matched.As shown in the above figure, the folding mechanism 1000 also includes a tension part 50 arranged between the second housing 20 and the third housing 30. The tension part 50 can apply a force sliding away from the rotating shaft 42 to the third housing 30, so that the third housing 30 can always be in the state of tensioning the flexible screen 70 and avoid the warping of the flexible screen 70.The third housing 30 includes a housing body 31, a plug-in part 33, a positioning column 34, and a convex rib 32 protruding from the edge of the housing body 31. The convex rib 32 forms a chute, the side of the housing body 31 facing the rotating shaft 42 is an open side, and the sliding part 22 is slidably inserted into the chute from the open side of the housing body 31, so that the reliable sliding connection between the second housing 20 and the third housing 30 can be realized.
The folding mechanism provided by the patent includes a first shell, a second shell, a rotating component and a third shell. Since the third shell can slide laterally along the second shell, taking the supporting flexible screen as an example, when the folding mechanism switches between the folded state and the flattened state, the third shell and the flexible screen slide laterally along the second shell synchronously, The distance between the first shell and the third shell can always match the length of the flexible screen, so it can better match the flattening and folding of the flexible screen.
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