Search

CN-115929771-B - Hinge mechanism and electronic device

CN115929771BCN 115929771 BCN115929771 BCN 115929771BCN-115929771-B

Abstract

The application discloses a hinge mechanism and electronic equipment, which belongs to the technical field of electronic product design, wherein the hinge mechanism is used for rotationally connecting a first shell and a second shell of the electronic equipment, the hinge mechanism comprises a base, a swing arm, a supporting piece and a floating plate, a first end of the swing arm is connected with the first shell or the second shell, a bearing bush is arranged at a second end of the swing arm and is in sliding fit with the base, the bearing bush is provided with a first sliding groove, the supporting piece is in sliding fit with the first sliding groove, the floating plate can be opposite to a flexible display screen, the bearing bush drives the supporting piece to be far away from the floating plate in the process of switching from an unfolding state to a folding state of the electronic equipment, so that the floating plate is far away from the flexible display screen, and the bearing bush drives the supporting piece to move in the process of switching from the folding state to the unfolding state of the electronic equipment, so that the supporting piece drives the floating plate to be close to the flexible display screen.

Inventors

  • HU NAN
  • CHENG DONGCUN
  • ZHENG QIPENG

Assignees

  • 维沃移动通信有限公司

Dates

Publication Date
20260512
Application Date
20221220

Claims (9)

  1. 1. A hinge mechanism for rotatably connecting a first housing and a second housing of an electronic device is characterized in that the hinge mechanism comprises a base, a swing arm, a support member and a floating plate, The first end of the swing arm is connected with the first shell or the second shell, the second end of the swing arm is provided with a bearing bush, and the bearing bush is in sliding fit with the base; the bearing bush is provided with a first chute, the supporting piece is in sliding fit with the first chute, and the floating plate can be opposite to the flexible display screen; the hinge mechanism further comprises a first gear and a second gear which are rotatably arranged on the base, the first gear is meshed with the second gear and are arranged in the first chute, the first gear is meshed with the tooth groove of the bearing bush, the second gear is meshed with the tooth groove of the supporting piece, the number of teeth of the first gear is larger than that of the second gear, and therefore the movement speed of the supporting piece is larger than that of the bearing bush; And in the process of switching the electronic equipment from the folding state to the unfolding state, the bearing bush drives the supporting piece to move so that the supporting piece drives the floating plate to be close to the flexible display screen.
  2. 2. The hinge mechanism according to claim 1, further comprising an elastic member, wherein the floating plate is connected to the base through the elastic member, and the floating plate is in contact with the flexible display screen when the electronic device is in the unfolded state, and the elastic member can drive the floating plate to be away from the flexible display screen when the electronic device is switched from the unfolded state to the folded state.
  3. 3. The hinge mechanism of claim 1, wherein the first runner has oppositely disposed first and second inner surfaces, the support has oppositely disposed first and second outer surfaces, at least a portion of the first inner surface being disposed opposite the first outer surface, and at least a portion of the second inner surface being disposed opposite the second outer surface, wherein: The first gear is engaged with a first tooth slot of the first inner surface, and the second gear is engaged with a second tooth slot of the first outer surface.
  4. 4. A hinge mechanism according to claim 3, further comprising a third gear and a fourth gear, said third gear and said fourth gear being meshed and both disposed in said first runner, said third gear being meshed with a third tooth slot of said second inner surface, said fourth gear being meshed with a fourth tooth slot of said second outer surface, and the number of teeth of said third gear being greater than the number of teeth of said fourth gear.
  5. 5. The hinge mechanism according to claim 1, wherein a thickness of at least one of the first gear and the second gear is equal to a length of the support member in a direction in which a rotation axis thereof is located.
  6. 6. The hinge mechanism of claim 1, wherein the first gear and the support have a first gap therebetween and the second gear and the bushing have a second gap therebetween.
  7. 7. The hinge mechanism of claim 1, wherein an arc length of the first runner is equal to an arc length of the support in a rotational direction of the support.
  8. 8. The hinge mechanism of claim 1, wherein the number of swing arms is at least two, including a first swing arm and a second swing arm, the first swing arm is connected to the first housing, the second swing arm is connected to the second housing, the number of support members is at least two, including a first support member and a second support member, the first support member is in sliding engagement with the first runner of the first swing arm, the second support member is in sliding engagement with the first runner of the second swing arm, and the first end of the first support member and the first end of the second support member are both connected to the floating plate.
  9. 9. An electronic device comprising the hinge mechanism of any one of claims 1-8, the first housing, and the second housing, the first housing and the second housing being rotatably connected by the hinge mechanism.

Description

Hinge mechanism and electronic device Technical Field The application belongs to the technical field of electronic products, and particularly relates to a hinge mechanism and electronic equipment. Background With the progress and development of electronic devices, flexible display screens have become a development trend of electronic devices, wherein hinge mechanisms are key functional components for realizing the folding of the electronic devices. The hinge mechanism can comprise a virtual swing arm, a floating plate and a floating plate pressure spring, wherein the virtual swing arm rotates along with the electronic equipment in the folding process, so that the floating plate pressure spring in a tension state drives the floating plate to move along with the virtual swing arm, and the folding and unfolding processes of the flexible display screen are realized. However, in the folding process of the electronic device, the movement of the floating plate is limited to a certain extent by the virtual swing arm, namely, the lowering speed of the floating plate is slower by the virtual swing arm, and the normal bending of the screen in the bending area is affected, namely, the screen is easy to cause the phenomenon of reverse bending, so that in order to avoid the phenomenon, a certain safety gap is reserved between the floating plate and the flexible display screen in a specific design, even if the lowering speed of the floating plate is slower, the screen in the bending area can firstly enter the safety gap, and secondly, the screen in the bending area is completely bent along with the lowering of the floating plate, so that the phenomenon of reverse bending of the screen in the bending area can be avoided. However, as the folding times of the flexible display screen are increased, stress is generated in the folding area of the screen during folding, after the screen is flattened, the stress deformation is not completely released, folds are generated in the folding area over time, and the folds of the flexible display screen are more obvious due to the existence of a safety gap. Accordingly, the hinge mechanism related to the related art has a problem in that creases on the flexible display screen are more remarkable. Disclosure of Invention The embodiment of the application aims to provide a hinge mechanism and electronic equipment, which can solve the problem that the hinge mechanism related to the related technology has obvious folds on a flexible display screen. The embodiment of the application provides a hinge mechanism for rotationally connecting a first shell and a second shell of electronic equipment, which comprises a base, a swing arm, a support piece and a floating plate, The first end of the swing arm is connected with the first shell or the second shell, the second end of the swing arm is provided with a bearing bush, and the bearing bush is in sliding fit with the base; the bearing bush is provided with a first chute, the supporting piece is in sliding fit with the first chute, and the floating plate can be opposite to the flexible display screen; In the process of switching the electronic equipment from the folding state to the unfolding state, the bearing bush drives the supporting piece to move so that the supporting piece drives the floating plate to be close to the flexible display screen. The embodiment of the application provides electronic equipment, which comprises the hinge mechanism, the first shell and the second shell, wherein the first shell and the second shell are rotationally connected through the hinge mechanism. In the embodiment of the application, when the electronic equipment is switched from the unfolding state to the folding state, the bearing bush rotates to drive the supporting piece to move away from the floating plate, so that the swing arm and the supporting piece do not limit the floating plate to move in the direction away from the flexible display screen, and the phenomenon of reverse folding of the flexible display screen is prevented; when the electronic equipment is switched from the folding state to the unfolding state, the bearing bush can rotate to drive the supporting piece to move, so that the supporting piece can quickly push the floating plate to move towards the direction close to the flexible display screen so as to support the flexible display screen, and therefore, in the situation, the supporting piece can enable the floating plate to more reliably support the flexible display screen, and folds on the flexible display screen are reduced. Therefore, the arrangement mode can avoid the problem that the crease on the flexible display screen is obvious. Drawings FIG. 1 is a schematic view of a part of a hinge mechanism according to an embodiment of the present application; FIG. 2 is an enlarged schematic view of FIG. 1 at A; Fig. 3 is a schematic structural diagram of an electronic device in an unfolded state according to an embodiment of the present ap