CN114584638A

CN114584638A - Rotating shaft mechanism and mobile terminal

Info

Publication number: CN114584638A
Application number: CN202011380806.XA
Authority: CN
Inventors: 加藤秀夫; 长井贤次; 邹亚科; 彭运辉; 李灏
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2020-11-30
Filing date: 2020-11-30
Publication date: 2022-06-03
Anticipated expiration: 2040-11-30
Also published as: CN114584638B

Abstract

The application provides a rotating shaft mechanism and a mobile terminal. The rotating shaft mechanism comprises a main shaft assembly, two swinging assemblies and a pair of connecting rod assemblies; the two swing assemblies are used for being correspondingly and fixedly connected with the two shells. The connecting rod assembly is used as a structural part for the swinging assembly to rotate relative to the main shaft assembly. The rotating shaft mechanism comprises a real shaft oscillating bar, a virtual shaft oscillating bar and a connecting rod; the first end of the solid shaft swing rod is rotatably connected with the main shaft assembly, and the second end of the solid shaft swing rod is slidably connected with the swing assembly positioned on the same side. The first end of the virtual shaft oscillating bar is connected with the main shaft assembly in a sliding manner and can rotate around a first virtual axis, and the second end of the virtual shaft oscillating bar is connected with the oscillating assembly positioned on the same side in a rotating manner; two ends of the connecting rod are respectively and rotatably connected with the first end of the real shaft swing rod and the first end of the virtual shaft swing rod, and the virtual shaft swing rod is pulled to rotate through the connecting rod when the real shaft swing rod rotates. In the scheme, the stability of the virtual shaft oscillating bar during rotation is ensured through the real shaft oscillating bar and the connecting rod, and the reliability of the rotating shaft mechanism during operation is ensured.

Description

Rotating shaft mechanism and mobile terminal

Technical Field

The application relates to the technical field of mobile terminals, in particular to a rotating shaft mechanism and a mobile terminal.

Background

As the flexible folding screen technology is mature day by day, the flexible folding terminal product is a big trend in the future, and the folding terminal product (such as folding mobile phone, folding tablet, folding computer and other electronic devices) needs to meet the requirements of higher reliability, better operation experience and ID appearance, so that the flexible folding terminal product can be accepted by consumers. Taking a folding mobile phone as an example, different from the conventional flip mobile phone, the flexible folding mobile phone has the advantage that the screen is continuously foldable, so that the whole appearance of the product is greatly deformed at the bent part of the middle rotating shaft of the folding mobile phone in order to ensure that the folding screen is not pulled or extruded, and the general structure cannot achieve the large deformation.

At present, a folding type terminal product of a mainstream realizes screen folding by adopting a rotating shaft mechanism, but the gap between the existing rotating shaft mechanism parts is too large, and the problems of shaking and blocking are easy to occur.

Disclosure of Invention

The application provides a pivot mechanism and mobile terminal, has improved the stability of pivot mechanism when using.

In a first aspect, a hinge mechanism is provided, where the hinge mechanism is applied to a foldable mobile terminal, and the mobile terminal includes two housings, and the two housings can be rotated by the hinge mechanism to fold and unfold the mobile terminal. The rotating shaft mechanism comprises a main shaft assembly, two swinging assemblies and at least one pair of connecting rod assemblies; the two swing assemblies are respectively arranged on two sides of the central line of the main shaft assembly and are respectively fixedly connected with the two shells in a one-to-one correspondence mode, and therefore the rotating shaft mechanism is connected with the shells. The central line of the spindle assembly is parallel to the length direction of the spindle assembly. Each pair of connecting rod assemblies comprises a first connecting rod assembly and a second connecting rod assembly; the first connecting rod assembly and the second connecting rod assembly are used for realizing connection between the swinging assembly and the main shaft assembly and serve as structural members for the swinging assembly to rotate relative to the main shaft assembly. Each connecting rod assembly comprises a real shaft oscillating bar, a virtual shaft oscillating bar and a connecting rod; the virtual shaft swing rod and the real shaft swing rod are respectively arranged on two sides of the central line of the main shaft assembly, and the connecting rod is used for connecting the virtual shaft swing rod and the real shaft swing rod. When the spindle assembly is connected with the swing assembly, the first end of the solid shaft swing rod is rotatably connected with the spindle assembly through the rotating shaft, and the second end of the solid shaft swing rod is slidably connected with the swing assembly positioned on the same side. In the connection, the solid shaft swing rod can rotate around a solid shaft (rotating shaft) relative to the main shaft assembly, and the length direction of the rotating shaft is parallel to the central line of the main shaft assembly. The first end of the virtual shaft oscillating bar is connected with the main shaft assembly in a sliding manner and can rotate around a first virtual axis, and the second end of the virtual shaft oscillating bar is connected with the oscillating assembly positioned on the same side in a rotating manner; the first virtual axis is parallel to the centerline of the spindle assembly. In the connection, the virtual shaft oscillating bar rotates around the first virtual axis relative to the main shaft assembly. The connecting rod is used as a connecting piece of the real shaft oscillating rod and the virtual shaft oscillating rod, two ends of the connecting rod are respectively in rotating connection with the first end of the real shaft oscillating rod and the first end of the virtual shaft oscillating rod, and the virtual shaft oscillating rod is pulled to rotate through the connecting rod when the real shaft oscillating rod rotates. When the first connecting rod assembly and the second connecting rod assembly are respectively connected with the two swinging assemblies, the real shaft swinging rod of the first connecting rod assembly and the virtual shaft swinging rod of the second connecting rod assembly are positioned on the same side of the main shaft assembly; the virtual shaft swing rod of the first connecting rod assembly and the real shaft swing rod of the second connecting rod assembly are positioned on the other opposite side of the main shaft assembly; and in the real shaft oscillating bar and the virtual shaft oscillating bar which are positioned at the same side of the main shaft assembly, the axis around which the real shaft oscillating bar rotates relative to the main shaft assembly is different from the first virtual axis around which the virtual shaft oscillating bar rotates relative to the main shaft assembly. In the scheme, the stability of the virtual shaft oscillating bar in rotation is ensured through the real shaft oscillating bar and the connecting rod, and the reliability of the rotating shaft mechanism in operation is ensured.

In a specific possible embodiment, the axis about which the solid shaft swing link rotates relative to the main shaft assembly is different from the axis about which the connecting rod rotates relative to the solid shaft swing link. Therefore, when the real shaft oscillating bar rotates, the rotating stability of the virtual shaft oscillating bar can be ensured through the connecting rod.

In a specific possible embodiment, the main shaft assembly is provided with first arc-shaped sliding grooves which correspond to the swing rods of each virtual shaft one by one; the first end of each virtual shaft oscillating bar is provided with a first arc-shaped arm which is assembled in the corresponding first arc-shaped sliding groove in a sliding manner; an inner concave surface of the first arcuate arm faces a first surface of the spindle assembly for supporting a flexible screen. The first arc-shaped arm is matched with the first arc-shaped sliding groove to realize sliding connection between the virtual shaft oscillating bar and the main shaft assembly. The center of the first arc-shaped sliding chute is located on the first virtual axis.

In a particular embodiment, the main shaft assembly includes a main outer shaft and a main inner shaft fixedly connected with the main outer shaft; wherein, every first arc spout includes: the arc-shaped groove is arranged on the main outer shaft and is concave inwards, and the arc-shaped surface is arranged on the main inner shaft and covers the arc-shaped groove. In the technical scheme, the spindle assembly is of a split structure, so that the parts can be conveniently machined.

In a specific embodiment, the rotating shaft mechanism further comprises two screen supporting plates; each screen support plate is located between the spindle assembly and one of the swing assemblies adjacent to the spindle assembly and is used to support a flexible screen. The screen supporting plate supports the flexible screen when the rotating shaft mechanism is bent, so that the reliability of supporting the flexible screen is ensured.

In a specific possible embodiment, the first side of the screen support plate is slidably connected to the corresponding swing assembly and is rotatable about the second virtual axis; the second side of the screen supporting plate is connected with the spindle assembly in a sliding mode and can rotate around a third virtual axis; the second virtual axis and the third virtual axis are respectively parallel to the central line of the spindle assembly. By adopting the screen supporting plate to rotate around the virtual shaft, the screen supporting plate is still reliably connected when the swinging assembly rotates relative to the main shaft assembly.

In a specific possible embodiment, the first side of the screen support plate is provided with a second arc-shaped arm, and the second side is provided with a third arc-shaped arm; wherein the inner concave surfaces of the second and third arcuate arms face the first surface of the spindle assembly for supporting a flexible screen; the main shaft assembly is provided with a second arc-shaped sliding groove in sliding fit with the second arc-shaped arm; the swing assembly is provided with a third arc-shaped sliding groove in sliding fit with the third arc-shaped arm. The screen supporting plate is connected with the main shaft assembly and the swinging assembly through the matching of the arc-shaped arm and the arc-shaped sliding groove.

In a particular possible embodiment, each support plate has a second surface for supporting a flexible screen; the second surface of the supporting plate and the first surface of the main shaft assembly, which is used for supporting the flexible screen, are arc-shaped surfaces with the same radian. The supporting effect on the flexible screen is improved.

In a specific embodiment, the spindle mechanism further comprises two back plates; the two back plates are located on one side, away from the flexible screen, of the rotating shaft mechanism and are used for shielding gaps between the main shaft assembly and the two swinging assemblies in a one-to-one correspondence mode. The back plate shields a gap between the swinging assembly and the spindle assembly when the back plate is unfolded.

In a specific embodiment, when the two swing assemblies are in the first position, the opposite sides of the two back plates are aligned with and cover the side of the main shaft assembly, which faces away from the flexible screen. The appearance effect of the mobile terminal when the mobile terminal is unfolded is improved.

In a specific embodiment, the first side of each back plate is slidably connected with the spindle assembly and can rotate around the fourth virtual axis, and the second side of each back plate is slidably connected with the corresponding swing assembly and can rotate relative to the corresponding swing assembly; wherein the fourth virtual axis is parallel to the centerline of the spindle assembly. The back plate can move relatively when the rotating shaft mechanism is folded.

In a specific possible embodiment, the first side of each back plate is provided with a fourth arc-shaped arm; a fourth arc-shaped sliding groove which is assembled with the fourth arc-shaped arm in a sliding manner is arranged in the main shaft assembly; wherein the inner concave surface of the fourth arcuate arm faces away from the first surface of the spindle assembly for supporting a flexible screen.

In a specific embodiment, the second side of each back plate is provided with a sliding block; the swing assembly is provided with a sliding groove in sliding fit with the sliding block; wherein, the sliding block can rotate in the sliding groove; or the sliding block is rotatably connected with the second side of the back plate. The connection between the back plate and the spindle assembly is realized through the matching of the arc-shaped arm and the arc-shaped sliding groove.

In a specific possible embodiment, the second end of the virtual shaft swing link has a fifth arc-shaped arm; the swing assembly corresponding to the virtual shaft swing rod is provided with an arc-shaped bulge matched with the fifth arc-shaped arm; the concave surface of the fifth arc-shaped arm is buckled on the arc-shaped bulge and can rotate relative to the arc-shaped bulge.

In a specific embodiment, the spindle mechanism further comprises a linkage assembly; the linkage assembly comprises two synchronous swing rods; the two synchronous swing rods are respectively arranged at two sides of the central line of the main shaft assembly; a gear structure is arranged at the first end of each synchronous swing rod, and the gear structures of the two synchronous swing rods are meshed; the second end of each synchronous swing rod is slidably assembled on the swing component positioned on the same side and can rotate relative to the swing component. Synchronous rotation between the swing assemblies is realized through the linkage assembly.

In a specific possible embodiment, the rotating shaft mechanism further comprises a limiting component corresponding to each synchronous swing rod; the spacing subassembly includes: a damping surface disposed within the support plate; a damping slider slidably mounted within the support plate; the damping slide block is rotatably connected with the second end of the corresponding synchronous swing rod; and a damping structure which is pressed against the damping surface is arranged in the damping slide block. The experience of the user when folding is improved.

In a specific possible embodiment, the damping structure comprises an elastic member and a damping ball disposed within a damping slider; the number of the damping slide blocks is two; and two ends of the elastic piece are respectively pressed against the two damping balls and used for pushing the damping balls to be exposed outside the damping slide block. The damping slide block is matched with the elastic piece, so that the damping slide block is matched with the damping surface.

In a specific embodiment, the resilient member is a spring.

In a specific possible embodiment, the damping surface has a first concave surface, a convex surface, and a second concave surface arranged along the sliding direction of the damping slider; when the included angle between the two swing assemblies is a first angle, the damping ball is matched with the first concave surface; when the included angle between the two swing assemblies is a second angle, the damping ball is matched with the second concave surface; wherein the first angle is greater than the second angle. The damping effect is achieved at different angles.

In a specific embodiment, the spindle assembly further comprises two frame connecting pieces, wherein the two frame connecting pieces are respectively arranged on two sides of the central line of the spindle assembly; the two swing assemblies are respectively fixedly connected with the frame connecting piece on the same side.

In a second aspect, a mobile terminal is provided, where the mobile terminal includes a flexible screen, two housings, and any one of the above spindle mechanisms; the two shells are respectively arranged at two sides of the rotating shaft mechanism, and the two swing assemblies are respectively fixedly connected with the two shells in a one-to-one correspondence manner; the flexible screen continuously covers the two shells and the rotating shaft mechanism, and the flexible screen is fixedly connected with the two shells. In the scheme, the stability of the virtual shaft oscillating bar in rotation is ensured through the real shaft oscillating bar and the connecting rod, and the reliability of the rotating shaft mechanism in operation is ensured.

Drawings

Fig. 1 is a schematic view of an application scenario of a spindle mechanism according to an embodiment of the present application;

fig. 2 is an exploded schematic view of a mobile terminal according to an embodiment of the present application;

fig. 3 is a schematic structural diagram of a rotating shaft mechanism provided in an embodiment of the present application;

fig. 4 is a schematic internal structural diagram of a spindle mechanism according to an embodiment of the present disclosure;

fig. 5 is a schematic structural diagram of a first virtual shaft swing link provided in an embodiment of the present application;

FIG. 6 is a schematic view of a linkage assembly and a swing assembly according to an embodiment of the present disclosure;

fig. 7 is a schematic diagram illustrating a first virtual shaft oscillating bar and a second oscillating assembly according to an embodiment of the present disclosure;

FIG. 8 is a schematic view of the linkage assembly engaged with the pivot mechanism in an extended position according to an embodiment of the present disclosure;

FIG. 9 is an equivalent schematic view of components within the connecting rod assembly provided in accordance with an embodiment of the present application;

FIG. 10 is a schematic view of the screen supporting plate, the swing assembly and the spindle assembly according to an embodiment of the present disclosure;

fig. 11 is a schematic view illustrating a screen supporting plate, a swinging assembly and a spindle assembly in a deployed state of a rotating shaft mechanism according to an embodiment of the present disclosure;

FIG. 12 is a schematic view of a back plate and a spindle assembly according to an embodiment of the present disclosure;

FIG. 13 is a schematic diagram of a backplate and a wobble assembly according to an embodiment of the present disclosure;

FIG. 14 is a schematic diagram illustrating the engagement between the back plate and the spindle assembly when the spindle mechanism is rotated according to an embodiment of the present disclosure;

FIG. 15 is a schematic diagram illustrating the engagement between the back plate and the spindle assembly when the spindle mechanism is in the unfolded state according to the embodiment of the present disclosure;

FIG. 16 is a schematic view of the linkage assembly cooperating with the spindle assembly and the swing assembly according to the embodiment of the present application;

fig. 17 is a schematic view illustrating the linkage assembly and the swing assembly of the hinge mechanism in an unfolded state according to the embodiment of the present disclosure;

FIG. 18 is a schematic view of a damping structure cooperating with a linkage assembly and a second swing assembly according to an embodiment of the present disclosure;

fig. 19 is an exploded schematic view of a damping structure provided in an embodiment of the present application.

Detailed Description

The embodiments of the present application will be further described with reference to the accompanying drawings.

The references to "first" and "second" in the embodiments of the present application are merely defined for the convenience of distinguishing components and do not represent actual meanings.

To facilitate understanding of the hinge mechanism provided in the embodiments of the present application, an application scenario of the hinge mechanism is first described below, where the hinge mechanism is applied to a mobile terminal, particularly a mobile terminal with a bendable screen, such as a mobile phone, a PDA, a notebook computer, or a tablet computer. But it includes the structure as shown in fig. 1 regardless of which mobile terminal is adopted: the flexible screen comprises a first shell 20, a rotating shaft mechanism 10, a second shell 30 and a flexible screen 40. Referring to fig. 1 and 2 together, fig. 2 is an exploded view of the mobile terminal. The rotating shaft mechanism 10 is connected to the first casing 20 and the second casing 30, respectively, the first casing 20 and the second casing 30 can rotate relatively by the rotation of the rotating shaft mechanism 10, and the flexible screen 40 covers the first casing 20, the second casing 30 and the rotating shaft mechanism 10, and is bonded to the first casing 20, the second casing 30 and the rotating shaft mechanism 10, respectively, so as to form the structure shown in fig. 1. In use, the mobile terminal comprises two states, one is an unfolded state and the other is a folded state. In fig. 1, which shows a state of the mobile terminal after being unfolded, the first housing 20 and the second housing 30 are arranged on both sides of the hinge mechanism 10 and are in approximately the same plane, and the flexible screen 40 is unfolded following the first housing 10 and the second housing 30. When bending, the first casing 20 and the second casing 30 rotate in the direction indicated by the straight line with an arrow shown in fig. 1, after folding, the first casing 20 and the second casing 30 are stacked opposite to each other, and the flexible screen 40 bends following the first casing 20 and the second casing 30. In the embodiment of the present application, the mobile terminal is a fold-out device, that is, after being folded, the flexible screen 40 is located at the outer side of the mobile terminal. To facilitate understanding of the spindle mechanism 10 provided in the embodiments of the present application, the following describes the structure thereof in detail with reference to the accompanying drawings.

Referring first to fig. 3, fig. 3 shows a schematic structural diagram of a spindle mechanism provided in an embodiment of the present application. The spindle mechanism includes a spindle assembly 100 and two oscillating assemblies. It should be understood that fig. 3 shows the structure of one end side of the rotating shaft mechanism, and the same structure is also adopted on the other end side of the rotating shaft mechanism, and in the embodiment of the present application, only the structure of one end side of the rotating shaft mechanism shown in fig. 3 is taken as an example for explanation.

The spindle assembly 100 serves as a bearing member of the rotating shaft mechanism for bearing the swing assembly and the connecting rod assembly. To facilitate description of the relative positional relationship between the components, the centerline a of the spindle assembly 100 is introduced. The center line of the spindle assembly 100 is one of the center lines of the spindle assembly 100 parallel to the length direction thereof. The center line a of the spindle assembly 100 is also the center line of the spindle mechanism.

The spindle assembly 100 has a first surface (not shown) that supports the flexible screen, which as an alternative is an arcuate surface. The flexible screen may be supported by the first surface when the flexible screen is folded. The radian of the first surface is the bending radian of the bending part of the flexible screen.

The main shaft assembly 100 includes a main outer shaft 120 and a main inner shaft 110 fixedly connected to the main outer shaft 120. The main inner shaft 110 is used to support the flexible screen, and the first surface is an outer surface of the main inner shaft 110. The main outer shaft 120 is used to enclose a space with the main inner shaft 110 for accommodating devices, and a space between the main inner shaft 110 and the main outer shaft 120 for accommodating other components of the spindle mechanism may be enclosed. Illustratively, the main outer shaft 120 and the main inner shaft 110 are connected by a threaded connection such as a bolt or a screw, or the main outer shaft 120 and the main inner shaft 110 are fixedly connected by a snap.

The swing assembly is a component for connecting the rotating shaft mechanism with the shell. The rotating shaft mechanism has two swing assemblies, which are named as a first swing assembly 210 and a second swing assembly 220, respectively, for convenience of description. The first swing assembly 210 and the second swing assembly 220 are arranged on both sides of the spindle assembly 100, i.e., on both sides of the center line of the spindle assembly 100. The first swing assembly 210 and the second swing assembly 220 are respectively and fixedly connected to the two housings in a one-to-one correspondence manner, and in combination with the mobile terminal scenario shown in fig. 1, the first swing assembly 210 is fixedly connected to the first housing, and the second swing assembly 220 is fixedly connected to the second housing.

As an alternative, the first swing assembly 210 is fixedly connected to the first housing through a first frame connector 410, and the second swing assembly 220 is fixedly connected to the second housing through a second frame connector 420. For example, the first frame connector 410 may be fixedly connected to the first swing assembly 210 and the first housing by bolts or screws, and the second frame connector 420 may be fixedly connected to the second swing assembly 220 and the second housing by bolts or screws. Of course, the first frame connector 410 and the second frame connector 420 may also be fixedly connected to the above-mentioned components through other connectors, which are not illustrated here.

It should be understood that only one first frame connector 410 and one second frame connector 420 are illustrated in fig. 3, but the number of the first frame connectors 410 and the second frame connectors 420 is not particularly limited in the embodiment of the present application. In order to ensure the stability of the connection of the rotating shaft mechanism with the first housing and the second housing, the number of the first frame connecting pieces 410 and the second frame connecting pieces 420 can be set as required.

As an alternative, the first frame connector 410 and the second frame connector 420 may be symmetrically disposed, or may be reasonably adjusted according to the disposition positions of other components for avoiding.

The first swing assembly 210 and the second swing assembly 220 can rotate relative to the main shaft. When the mobile terminal is folded, a user drives the first housing and the second housing to rotate, the first housing drives the first swing assembly 210 to rotate relative to the main shaft assembly 100, and the second housing drives the second swing assembly 220 to rotate relative to the main shaft assembly 100. In order to ensure that there is a space for relative rotation between the first swing assembly 210 and the second swing assembly 220 and the spindle assembly 100, there must be a gap between the first swing assembly 210 and the spindle assembly 100 and between the second swing assembly 220 and the spindle assembly 100. In order to avoid the gap from influencing the effect of supporting the flexible screen, a shielding supporting plate is arranged in the gap. Each screen support plate is located between the spindle assembly 100 and one of the swing assemblies adjacent to the spindle assembly 100 and is used to support a flexible screen.

In fig. 3, a first screen support plate 310 and a second screen support plate 320 are shown, the first screen support plate 310 being positioned between the first swing assembly 210 and the spindle assembly 100 and being rotatable with respect to the first swing assembly 210 and the spindle assembly 100. The second screen supporting plate 320 is positioned between the second swing assembly 220 and the spindle assembly 100 and is rotatable with respect to the second swing assembly 220 and the spindle assembly 100. When the first swing assembly 210 and the second swing assembly 220 rotate relative to the spindle assembly 100, the first swing assembly 210 and the second swing assembly 220 can be shielded from gaps generated when the first swing assembly 210 and the second swing assembly 220 rotate relative to the spindle assembly 100, and the flexible screen can be supported by the first screen support plate 310 and the second screen support plate 320, so that the flexible screen is prevented from being suspended.

Referring to fig. 4, fig. 4 shows an internal structural view of the spindle mechanism. Fig. 4 shows a structure of the first swing assembly 210 and the second swing assembly 220 rotatably connected to the spindle assembly 100.

In the embodiment of the application, the swinging assembly rotates relative to the main shaft assembly through the connecting rod assembly. The connecting rod assembly is arranged in a space surrounded by the main outer shaft and the main inner shaft.

The connecting rod assemblies are arranged in pairs, and the rotating shaft mechanism provided by the embodiment of the application comprises at least one pair of connecting rod assemblies. In the rotating shaft mechanism, the logarithm of the connecting rod assemblies can be set as required, and in order to ensure the stability of the rotation between the swinging assembly and the main shaft assembly, the connecting rod assemblies can adopt two pairs of connecting rod assemblies, or also can adopt connecting rod assemblies with different logarithms, such as three pairs of connecting rod assemblies, four pairs of connecting rod assemblies and the like. However, the structure of each pair of link assemblies is the same regardless of the number of pairs of link assemblies, and a pair of link assemblies, which is composed of the first link assembly 510 and the second link assembly 520 shown in fig. 4, will be described below as an example.

Each pair of link assemblies includes a first link assembly 510 and a second link assembly 520, and the first link assembly 510 and the second link assembly 520 are arranged along the length direction of the center line a of the spindle assembly 100. Each connecting rod component comprises a real shaft oscillating bar and a virtual shaft oscillating bar, wherein the virtual shaft oscillating bar and the real shaft oscillating bar are respectively arranged on two sides of the central line a of the main shaft component. As shown in fig. 4, the first virtual shaft swing link 513 of the first link assembly 510 and the second real shaft swing link 521 of the second link assembly 520 are located on the same side of the centerline a of the spindle assembly 100 and are used to connect with the first swing assembly 210. The first real shaft swing link 511 of the first link assembly 510 and the second virtual shaft swing link 523 of the second link assembly 520 are located at the opposite side of the central line a of the main shaft assembly 100 and are used for connecting with the second swing assembly 220.

The pair of link assemblies are used for limiting the first swing assembly 210 and the second swing assembly 220 to rotate along a set track. Here, the first link assembly 510 and the second link assembly 520 are connected to the corresponding components in the same manner, and therefore, the first link assembly 510 is taken as an example for description.

A first end of the first solid shaft swing link 511 is rotatably connected to the main shaft assembly 100 through a rotating shaft (not labeled in fig. 4), and a length direction of the rotating shaft is parallel to the central line a of the main shaft assembly 100. For convenience of description, it is named as a first rotating shaft, and when the first solid shaft swing link 511 rotates relative to the main shaft assembly 100, the first solid shaft swing link 511 rotates around the solid shaft (first rotating shaft).

The second end of the first solid shaft swing link 511 is slidably connected to the swing component (the first swing component 210) located on the same side. Illustratively, the sliding groove 211 is formed in the first swing assembly 210, and the second end of the first solid shaft swing link 511 is slidably fitted in the sliding groove 211 and can slide along the first direction b. The first direction b is perpendicular to the central line a of the spindle assembly 100 and parallel to the width direction of the first swing assembly 210.

When the first swing assembly 210 rotates relative to the main shaft assembly 100, the second end of the first solid shaft swing link 511 can slide relative to the first swing assembly 210, and the first swing assembly 210 is limited to move according to a set track by the relative sliding between the first solid shaft swing link 511 and the first swing assembly 210.

Referring to fig. 5 and 6 together, fig. 5 shows a schematic structural diagram of the first virtual shaft oscillating bar, and fig. 6 shows a schematic matching diagram of the first virtual shaft oscillating bar and the spindle assembly. The first end of the first virtual shaft swinging rod 513 is slidably connected with the spindle assembly 100 and can rotate around a first virtual axis, wherein the first virtual axis is parallel to the central line a of the spindle assembly 100.

When the sliding connection between the first virtual shaft swing links 513 and the spindle assembly 100 is realized, the spindle assembly 100 is provided with first arc-shaped sliding chutes 130 corresponding to the first virtual shaft swing links 513 one by one. When the main shaft assembly 100 adopts the main shaft 120 and the main shaft, the first arc chute 130 includes an arc groove disposed on the main shaft 120 and recessed inwards, and an arc surface disposed on the main shaft and covering the arc groove, and the first arc chute 130 is enclosed by the arc groove and the arc surface. The first end of the first virtual shaft swing link 513 is provided with a first arc-shaped arm 5131 slidably fitted in the corresponding first arc-shaped sliding groove 130, and the inner concave surface of the first arc-shaped arm 5131 faces the first surface of the main shaft assembly 100 for supporting the flexible screen. The center of the first arc-shaped sliding groove 130 and the center of the first arc-shaped arm 5131 are located on the first virtual axis, so that when the first arc-shaped arm 5131 slides in the first arc-shaped sliding groove 130, the first virtual shaft swinging rod 513 can rotate around the first virtual axis.

Referring to fig. 5 and 7 together, fig. 7 is a schematic diagram illustrating the second end of the first virtual shaft oscillating bar and the second oscillating assembly 220. The second end of the first virtual shaft swing rod 513 is rotatably connected with the swing assembly (the second swing assembly 220) located on the same side, for example, the second end of the first virtual shaft swing rod 513 is provided with a fifth arc-shaped arm 5132, an arc-shaped protrusion 221 corresponding to the fifth arc-shaped arm 5132 is arranged in the corresponding swing assembly (the second swing assembly 220), and an inner concave surface of the fifth arc-shaped arm 5132 is buckled on the arc-shaped protrusion 221 and can rotate relative to the arc-shaped protrusion 221. When the second swing element 220 drives the first virtual shaft swing link 513 to rotate, the second swing element 220 first rotates a set angle relative to the first virtual shaft swing link 513, and then the second swing element 220 drives the first virtual shaft swing link 513 to rotate around the first virtual axis.

Referring to fig. 4, the connection manner of the second real axle swing link 521 and the second virtual axle swing link 523 in the second link assembly 520 with the corresponding spindle assembly 100, the first swing assembly 210 and the second swing assembly 220 can refer to the connection manner of the first real axle swing link 511 and the first virtual axle swing link 513 in the first link assembly 510 with the corresponding spindle assembly 100, the first swing assembly 210 and the second swing assembly 220. Wherein, the first real shaft swing link 511 of the first link assembly 510 and the second virtual shaft swing link 523 of the second link assembly 520 are located at the same side of the main shaft assembly 100; the first virtual shaft swing link 513 of the first link assembly 510 and the second real shaft swing link 521 of the second link assembly 520 are located at the opposite side of the spindle assembly 100; and in the real shaft swing link and the virtual shaft swing link which are positioned on the same side of the main shaft assembly 100, the axis around which the real shaft swing link rotates relative to the main shaft assembly 100 is different from the first virtual axis around which the virtual shaft swing link rotates relative to the main shaft assembly. Illustratively, the first real shaft swing link 511 rotates about an axis different from the first virtual axis about which the second virtual shaft swing link 523 rotates about the spindle assembly 100 with respect to the spindle assembly 100. The second real shaft swing link 521 rotates about a different axis with respect to the spindle assembly 100 than the first virtual axis about which the first virtual shaft swing link 513 rotates with respect to the spindle assembly 100.

Taking the first swing element 210 as an example, the first swing element 210 is rotatably connected to the main shaft element 100 through a first real shaft swing link 511 and a second virtual shaft swing link 523. When the first swing assembly 210 rotates, the second end of the first solid shaft swing link 511 is pushed to slide along the direction b relative to the first swing assembly 210, and the first solid shaft swing link 511 is driven to rotate relative to the main shaft assembly 100. Meanwhile, the first swing element 210 also pushes the second swing link 530 to rotate relative to the main shaft element 100 and the first swing element 210. When the movement is performed in the above manner, the phase difference between the rotation of the first real-axis swing link 511 and the rotation of the second virtual-axis swing link 523 around different rotation axes is avoided by the sliding of the first real-axis swing link 511 relative to the first swinging component 210 and the rotation of the second virtual-axis swing link 523 relative to the first swinging component 210. And the first swing assembly 210 is limited to rotate along the set track through the movement. Similarly, when the second swing assembly 220 rotates, the second swing assembly 220 is limited to rotate along the set track by the movement of the first virtual shaft swing link 513 and the second real shaft swing link 521.

To ensure the stability of the first swing assembly 210 and the second swing assembly 220 during rotation. The first link assembly 510 is provided therein with a first link 512 to keep the first virtual shaft swing link 513 stable during rotation. A second link 522 is disposed in the second connecting assembly 520 to maintain the stability of the second virtual shaft lever 523 during rotation.

Referring to fig. 6 and 8 together, fig. 6 is a schematic view showing a state of the first link assembly when the rotating shaft mechanism is in a folded state, and fig. 8 is a schematic view showing a state of the first link assembly when the rotating shaft mechanism is in an unfolded state. Taking the first link 512 as an example, a first end of the first link 512 is rotatably connected to a first end of the first real axle swing link 511 through a rotating shaft, wherein an axis around which the first real axle swing link 511 rotates relative to the main axle assembly is different from an axis around which the first link 512 rotates relative to the first real axle swing link 511. The second end of the first link 512 is rotatably connected to the first end of the first virtual shaft swing link 513 through a rotating shaft, and similarly, the axis about which the first link 512 rotates relative to the first virtual shaft swing link 513 is different from the axis about which the first virtual shaft swing link 513 rotates relative to the main shaft assembly. For convenience of description, a rotating shaft rotationally connected between the first link 512 and the first real-axis swing link 511 is named as a second rotating shaft O2, and a rotating shaft rotationally connected between the first link 512 and the first virtual-axis swing link 513 is named as a third rotating shaft O3. The second rotating shaft O2 and the third rotating shaft O3 are respectively parallel to the center line of the spindle assembly, and the second rotating shaft O2 is offset with respect to the first rotating shaft O1, so that when the first solid shaft swing link 511 rotates, the first link 512 can be driven to swing by the second rotating shaft O2.

When the second rotating shaft O2 is offset from the first rotating shaft O1, the first rotating shaft O1 may drive the first link 512 to move relatively when the first real-axis swinging rod 511 rotates around the first rotating shaft O1, and the relative movement of the first link 512 may limit the relative displacement of the first virtual-axis swinging rod 513, so that the first virtual-axis swinging rod 513 is reliably supported during rotation.

In order to facilitate understanding of the relative position relationship among the first real axle swing link, the first link 512, and the first virtual swing link, the following schematic description is provided with reference to the schematic diagram of fig. 9. In fig. 9, a circle is drawn by taking the first rotating shaft O1 as a center of a circle and the distance between the second rotating shaft O2 and the first rotating shaft O1 as a radius, and the obtained track is the circle where the first end of the first connecting rod 512 rotates when the first solid-axis swing rod rotates. The first virtual axis O4 is used as a center of a circle, the distance between the third rotating shaft O3 and the first virtual axis O4 is used as a radius to draw a circle, and the obtained track is a circle where the track of the second end of the first connecting rod 512 rotates when the first virtual shaft swing rod rotates. As can be seen from the locus shown in fig. 9, when the first real shaft swing link rotates about the first rotation shaft O1 and the first virtual shaft swing link rotates about the first virtual axis O4, the two ends of the first link 512 swing along the locus of two circles, respectively. The dotted lines in fig. 9 indicate states of the first connecting rod 512 at different positions, and as can be seen from the track of the first connecting rod 512 shown in fig. 9, when the first real shaft swing link and the first virtual shaft swing link rotate, the first virtual shaft swing link can be limited to rotate around the first virtual axis by the length of the first connecting rod 512 and the positions of the first real shaft swing link and the first virtual shaft swing link, which are respectively connected with the first real shaft swing link and the first virtual shaft swing link, and the first connecting rod 512 and the first arc-shaped chute in the spindle assembly limit the movement of the first virtual shaft swing link together, thereby ensuring the stability of the first virtual shaft swing link during rotation.

As can be seen from the above description, the link assembly provided in the embodiment of the present application can realize the change and adjustment of the variation amount of the first swing element 210 and the second swing element 220 through the rotation phase difference between the solid rotation shaft (the first rotation shaft O1) and the first virtual axis O4 and the linkage of the first link 512, and the first link 512 has the function of linking and stabilizing the swing rod 513 of the first virtual axis. It should be understood that the offset of the relative rotation between the first rotating shaft O1 and the second rotating shaft O2 is not specifically limited in the embodiment of the present application, but it is sufficient to ensure that the first connecting rod 512 can realize the linkage between the first real-axis swinging rod 511 and the first virtual-axis swinging rod 513, and provide reliable support for the first virtual swinging rod 513.

Referring to fig. 10 and 11, fig. 10 is a schematic view illustrating the first screen supporting plate 310 and the second screen supporting plate 320. Fig. 11 shows a schematic structural view of the first screen support plate 310 and the second screen support plate 320 when the hinge mechanism is unfolded. The first screen supporting plate 310 and the second screen supporting plate 320 have the same structure, and the first screen supporting plate 310 is taken as an example for description.

The first screen supporting plate 310 is located between the spindle assembly 10 and the first swing assembly 210. The first side of the first screen supporting plate 310 is provided with a second arc-shaped arm 311, and the second side is provided with a third arc-shaped arm 312, wherein the inner concave surfaces of the second arc-shaped arm 311 and the third arc-shaped arm 312 face the first surface of the main shaft assembly for supporting the flexible screen. The first side and the second side are opposite sides of the first screen supporting plate 310, and the arrangement direction of the first side and the second side is perpendicular to the central line of the spindle assembly 10.

The spindle assembly 10 is provided with a second arc-shaped sliding groove 140 in sliding fit with a second arc-shaped arm 311, and the second arc-shaped arm 311 is slidably fitted in the second arc-shaped sliding groove 140. When the second arc-shaped arm 311 slides along the second arc-shaped sliding groove 140, the first screen support plate 310 may rotate about the second virtual axis.

The first swing assembly 210 is provided with a third arcuate runner 212 in sliding engagement with a third arcuate arm 312. The third arc-shaped arm 312 is slidably fitted in the third arc-shaped sliding groove 212, and the first screen supporting plate 310 can rotate about the third virtual axis when the third arc-shaped arm 312 slides along the third arc-shaped sliding groove 212.

It should be understood that the second virtual axis passes through the centers of the second arc-shaped arm 311 and the second arc-shaped sliding slot 140, and the second virtual axis is parallel to the center line of the spindle assembly 10. The third virtual axis passes through the third arc-shaped arm 312 and the circle of the third arc-shaped sliding slot 212, and the third virtual axis is parallel to the center line of the spindle assembly 10.

As an optional solution, the second surface is an arc surface, and the second surface and the first surface of the main shaft assembly 100 for supporting the flexible screen are arc surfaces with the same radian, so as to ensure that when the mobile terminal is in a folded state, the first screen support plate 310 and the main shaft assembly 10 can form an arc surface for supporting the bending part of the flexible screen.

When the first and

second swing members

210 and 220 are relatively rotated to the folded state, the second arc-shaped arm 311 of the first screen supporting plate 310 slides into the second arc-shaped sliding groove 140, and the third arc-shaped arm 312 slides into the third arc-shaped sliding groove 212. The first screen support plate 310 forms an arc-shaped surface with the spindle assembly 100 that supports the flexible screen. When the first swing assembly 210 and the second swing assembly 220 are relatively rotated to the unfolded state, the second arc-shaped arm 311 of the first screen supporting plate 310 slides out of the second arc-shaped sliding groove 140, and the third arc-shaped arm 312 slides out of the third arc-shaped sliding groove 212. The first screen support plate 310 and the spindle assembly 100 form two arc-shaped surfaces therebetween for supporting the flexible screen. It should be understood that when the first screen supporting plate 310 rotates to the state shown in fig. 11, the second arc-shaped arm 311 should still be partially located in the second arc-shaped sliding slot 140, and the third arc-shaped arm 312 should still be partially located in the third arc-shaped sliding slot 212, so as to ensure that the first screen supporting plate 310 can be stably connected with the spindle assembly 100 and the first swing assembly 210.

The connection of the second screen supporting plate 320 with the spindle assembly 100 and the second swing assembly 220 can be referred to the connection of the first screen supporting plate 310 with the spindle assembly 100 and the first swing assembly 210. And will not be described in detail herein.

It can be seen from fig. 10 and 11 that, the first side of the screen support plate is connected with the corresponding swing component in a sliding manner and can rotate around the second virtual axis, and the second side of the screen support plate is connected with the spindle component 100 in a sliding manner and can rotate around the third virtual axis, so that the gap between the swing component and the spindle component 100 in the rotation process can be shielded by the screen support plate, the support effect on the flexible screen is improved, and the condition that the flexible screen is suspended in the position of the rotating shaft mechanism is avoided. When a user touches the flexible screen, the flexible screen can be reliably supported through the spindle assembly 100, the screen supporting plate and the swinging assembly, and the user experience is improved.

Referring to fig. 12, fig. 12 shows a schematic view of the back plate cooperating with the spindle assembly 100 and the wobble assembly. In order to improve the appearance of the hinge mechanism, a first back plate 610 and a second back plate 620 are disposed in the hinge mechanism. The first back plate 610 and the second back plate 620 are located at a side of the rotating shaft mechanism away from the flexible screen, that is, the first back plate 610 and the second back plate 620, and the first screen support plate 310 and the second screen support plate 320 are respectively and correspondingly disposed at two opposite sides of the spindle assembly 100.

The first back plate 610 and the second back plate 620 are used for shielding the gap between the spindle assembly 100 and the two swing assemblies in a one-to-one correspondence manner. Illustratively, the first back plate 610 is used for shielding the gap between the first swing assembly 210 and the spindle assembly 100, and the second back plate 620 is used for shielding the gap between the second swing assembly 220 and the spindle assembly 100. The first back plate 610 and the second back plate 620 have the same structure, and the second back plate 620 is taken as an example for description.

The first side of the second back plate 620 is slidably connected to the spindle assembly 100 and can rotate around the fourth virtual axis, and the second side of the second back plate 620 is slidably connected to the corresponding swing assembly and can rotate relative to the corresponding swing assembly (the second swing assembly 220); wherein the fourth virtual axis is parallel to the centerline of the spindle assembly 100. The back plate can move relatively when the rotating shaft mechanism is folded.

Reference is made to the specific connection of the second backing plate 620 to the spindle assembly 100 shown in fig. 12. The first side of the second back plate 620 is provided with a fourth arc-shaped arm 621, and an inner concave surface of the fourth arc-shaped arm 621 faces away from the first surface of the main shaft assembly 100 for supporting the flexible screen. A fourth arc chute 150 is provided in the spindle assembly 100 and slidably assembled with the fourth arc arm 621. The fourth arc-shaped arm 621 and the fourth arc-shaped chute 150 are concentrically arranged, and the centers of the fourth arc-shaped arm 621 and the fourth arc-shaped chute 150 pass through a fourth virtual axis. When the fourth arc-shaped arm 621 slides in the fourth arc-shaped sliding slot 150, the second back plate 620 can rotate around the fourth virtual axis.

As an alternative, the end of the fourth arc-shaped arm 621 is provided with a limiting protrusion (not labeled in fig. 12), and the corresponding fourth arc-shaped sliding slot 150 is provided with a limiting groove matched with the limiting protrusion. Through the cooperation of spacing arch and spacing groove, inject the sliding distance of fourth arc arm 621 to avoid fourth arc arm 621 to follow the roll-off in the fourth arc spout 150, guaranteed the reliability of second backplate 620.

As an alternative, the second back plate 620 includes a baffle 622 for shielding the gap between the second swing assembly 220 and the spindle assembly 100, and the fourth arc-shaped arm 621 is fixedly connected to the baffle 622, for example, by a bolt or a screw. Of course, the baffle 622 and the fourth curved arm 621 may be formed as a single body.

Referring to fig. 13, fig. 13 shows a schematic connection diagram of the second back plate 620 and the second swing assembly 220. The second side of the second back plate 620 is provided with a sliding block 623, the second swing assembly 220 is provided with a sliding groove 223 in sliding fit with the sliding block 623, and the sliding block 623 can rotate in the sliding groove 223. So as to realize the relative rotation and sliding of the second back plate 620 relative to the second swing assembly 220.

As an alternative, a slider 623 may also be pivotally attached to the second side of the first backplate 610. The relative rotation between the slider 623 and the second back plate 620 realizes the relative rotation between the second back plate 620 and the second swing assembly 220.

As an alternative, when the second back plate 620 includes the baffle 622 and the fourth arc-shaped arm 621, the sliding block 623 is connected to the baffle 622.

The first back plate 610 and the second back plate 620 are symmetrically disposed, and the specific structure and the connection manner between the first swing assembly 210 and the spindle assembly 100 can refer to the description of the second back plate 620, which is not repeated herein.

During the rotation of the rotating shaft mechanism from the folded state to the unfolded state, the second back plate 620 follows the movement of the second swing assembly 220. Reference is first made to the folded state shown in fig. 12. The fourth arc-shaped arm 621 of the second back plate 620 is located at the outer end of the fourth arc-shaped chute 150. When the rotating shaft mechanism starts to rotate, as shown in fig. 13, the second swinging component 220 pushes the sliding block 623 to slide through the sliding slot 223, so as to drive the second back plate 620 to slide and rotate relative to the second swinging component 220. Meanwhile, referring to fig. 14, the second back plate 620 pushes the fourth arc-shaped arm 621 to slide towards the fourth arc-shaped sliding groove 150 and rotate counterclockwise, as shown in fig. 15, when the rotating shaft mechanism rotates to the unfolded state, when the first swing assembly 210 and the second swing assembly 220 are in the first position, the fourth arc-shaped arm 621 slides into the fourth arc-shaped sliding groove 150, and the second back plate 620 shields the gap between the second swing assembly 220 and the main shaft assembly 100. And the opposite sides of the first back plate 610 and the second back plate 620 are aligned with and shield the side of the spindle assembly 100 facing away from the flexible screen. Therefore, the appearance of the mobile terminal is smoother.

When mobile terminal expandes or folds, in order to guarantee the uniformity of first casing and second casing motion state, the pivot mechanism that this application embodiment provided has set up the linkage subassembly.

Referring to fig. 16, fig. 16 shows a structural schematic of the linkage assembly. The linkage assembly includes a first synchronous swing link 710 and a second synchronous swing link 720. The first and second synchronous swing levers 710 and 720 are arranged on both sides of the center line of the spindle assembly 100. A first gear structure 711 is disposed at a first end of the first synchronous swing link 710, and a second gear structure 721 is disposed at a first end of the second synchronous swing link 720. The first gear structure 711 and the second gear structure 721 are respectively connected to the main shaft assembly 100, and the first gear structure 711 and the second gear structure 721 are engaged.

The second end of the first synchronous swinging rod 710 is slidably mounted on the swinging component (the first swinging component 210) on the same side, and can rotate relative to the first swinging component 210. Illustratively, the second end of the first synchronous swinging rod 710 is rotatably connected with a sliding block 712, and the sliding block 712 is slidably connected with the first swinging component 210. The sliding direction of the slider 712 is the same as the sliding direction (direction b) of the first solid axis swing link with respect to the first swing assembly 210.

The connection between the second synchronous oscillating bar 720 and the second oscillating element 220 can refer to the connection between the first synchronous oscillating bar 710 and the first oscillating element 210, and is not described herein again.

Referring to fig. 17, fig. 17 is a schematic view illustrating positions of two sync levers when the mobile terminal is in a spread state. When the first oscillating assembly 210 rotates relative to the main shaft assembly 100, the first oscillating assembly 210 pushes the sliding block 712 to slide, the sliding block 712 pushes the first synchronous oscillating bar 710 to rotate relative to the main shaft assembly 100, and meanwhile, the meshing of the first gear structure 711 and the second gear structure 721 ensures that the symmetrically arranged second synchronous oscillating bars 720 keep the same motion, so that the first oscillating assembly 210 and the second oscillating assembly 220 are synchronous when rotating.

Referring to fig. 18, fig. 18 shows a schematic structural view of a limiting assembly of the spindle mechanism. The spindle mechanism includes a first stop assembly 810 and a second stop assembly 820. The first limiting component 810 is correspondingly connected to the first synchronous swing link 710, and the second limiting component 820 is correspondingly connected to the second synchronous swing link 720. For example, the rotating shaft mechanism provided in the embodiments of the present application may also employ only one limiting component. Such as only the first stop assembly 810 or only the second stop assembly 820.

The first stopper 810 and the second stopper 820 have the same structure, and the second stopper 820 will be described as an example.

The second stop assembly 820 includes a damping surface 822 disposed within the second swing assembly 220; a damping slider 821 slidably fitted in the second swing assembly 220. The damping slider 821 is rotatably connected to the second end of the corresponding synchronous swing link (the second synchronous swing link 720), and at this time, the damping slider 821 may be a slider in which the second synchronous swing link 720 is slidably matched with the second swing assembly 220.

Referring also to fig. 18 and 19, fig. 19 shows an exploded view of the dampening slider. A damping structure for pressing against the damping surface 822 is provided in the damping slider 821. The damping structure includes an elastic member 823 provided in the damping slider 821 and a damping ball 824. In this application, the damping structure includes two damping balls 824, and two ends of the elastic member 823 respectively press against the two damping balls 824. When assembled in the damping slider 821, a cavity 8212 is provided in the damping slider 821, and a through hole 8211 communicating with the cavity 8121 is provided at an end of the damping slider 821 facing the damping surface 822. The resilient member 823 of the damping structure is located in the cavity 8212, and the damping balls 824 are inserted into the through-hole 8211 and exposed outside the end surface of the damping slider 821 to contact the damping surface 822. When the damping ball 824 is in contact with the damping surface 822, the elastic member 823 pushes the damping ball 824 against the damping surface 822 by its own elastic force.

As an alternative, the elastic member 823 is a spring, or a rubber spring having an elastic force, or the like.

It should be understood that, in the above embodiments, it is illustrated that each limiting assembly includes two damping balls, but the embodiments of the present application are not limited specifically, and an arrangement manner of one damping ball may also be adopted.

As an alternative, the damping surface 822 has a first concave surface, a convex surface, and a second concave surface arranged along the sliding direction of the damping slider 821. When the included angle between the two swing assemblies is a first angle, the damping ball is matched with the first concave surface; when the included angle between the two swing assemblies is a second angle, the damping ball is matched with the second concave surface; wherein the first angle is greater than the second angle. Illustratively, the first angle corresponds to an unfolded state of the mobile terminal and the second angle corresponds to a folded state of the mobile terminal. And the convex surface is used as a surface for engaging the damping ball during the transition when the wobble assembly rotates from the first angle to the second angle. Wherein, the included angle of the swing components refers to the included angle formed between the central lines of the two swing components. The central lines of the two swing assemblies are perpendicular to the central line of the main shaft assembly.

Illustratively, when rotating from a first angle to a second angle. When the ball is at the first angle, the ball is in contact with the first concave surface, and when the ball is rotated from the first angle to the second angle, the damping slider 821 slides in the direction b, and the ball slides from the first concave surface to the convex surface, and the ball is compressed. When the damping ball rotates to a second angle, the damping ball slides from the convex surface to the second concave surface. The compression spring pushes the damping ball to pop out. As an alternative, the first angle corresponds to an unfolded state of the mobile terminal, and the second angle corresponds to a folded state of the mobile terminal.

As an alternative, a transition surface is arranged between the first concave surface and the convex surface, and between the second concave surface and the convex surface, so that the sliding of the damping ball is facilitated. For example, the transition surface may be an arcuate surface or a sloped surface to facilitate the damping ball rolling between the different surfaces.

As shown in fig. 1 and fig. 2, an embodiment of the present application further provides a mobile terminal, which may be a foldable terminal such as a mobile phone or a tablet computer, and the mobile terminal includes the rotating shaft mechanism of any one of the above, and a flexible screen, two shells (a first shell 20 and a second shell 30), where the two shells are respectively arranged at two sides of the rotating shaft mechanism 10 and are respectively and fixedly connected to two swing components in a one-to-one correspondence manner. The flexible screen covers on two casings and the rotating shaft mechanism, and the flexible screen is fixedly connected with the two casings. In the scheme, the stability of the virtual shaft oscillating bar during rotation is ensured through the real shaft oscillating bar and the connecting rod, and the reliability of the rotating shaft mechanism during operation is ensured.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

1. A rotating shaft mechanism is applied to a foldable mobile terminal and is characterized by comprising a main shaft assembly, two swinging assemblies and at least one pair of connecting rod assemblies; wherein the content of the first and second substances,

the two swing assemblies are respectively arranged on two sides of the central line of the main shaft assembly; the central line of the spindle assembly is parallel to the length direction of the spindle assembly;

each pair of connecting rod assemblies comprises a first connecting rod assembly and a second connecting rod assembly; the first connecting rod assembly and the second connecting rod assembly respectively comprise a real shaft oscillating bar, a virtual shaft oscillating bar and a connecting rod; the virtual shaft oscillating bar and the real shaft oscillating bar are respectively arranged on two sides of the central line of the main shaft assembly;

the first end of the solid shaft oscillating bar is rotatably connected with the main shaft assembly through a rotating shaft, and the second end of the solid shaft oscillating bar is slidably connected with the oscillating assembly positioned on the same side; the length direction of the rotating shaft is parallel to the central line of the spindle assembly;

the first end of the virtual shaft oscillating bar is connected with the main shaft assembly in a sliding manner and can rotate around a first virtual axis, and the second end of the virtual shaft oscillating bar is connected with the oscillating assembly positioned on the same side in a rotating manner; the first virtual axis is parallel to a centerline of the spindle assembly;

two ends of the connecting rod are respectively and rotatably connected with the first end of the real shaft oscillating bar and the first end of the virtual shaft oscillating bar, and the virtual shaft oscillating bar is pulled to rotate through the connecting rod when the real shaft oscillating bar rotates;

the real shaft oscillating bar of the first connecting rod assembly and the virtual shaft oscillating bar of the second connecting rod assembly are positioned on the same side of the main shaft assembly; the virtual shaft swing rod of the first connecting rod assembly and the real shaft swing rod of the second connecting rod assembly are positioned on the other opposite side of the main shaft assembly;

and in the real shaft oscillating bar and the virtual shaft oscillating bar which are positioned on the same side of the main shaft assembly, the axis around which the real shaft oscillating bar rotates relative to the main shaft assembly is different from the first virtual axis around which the virtual shaft oscillating bar rotates relative to the main shaft assembly.

2. The spindle mechanism of claim 1, wherein the axis about which the solid shaft swing link rotates relative to the spindle assembly is different from the axis about which the link rotates relative to the solid shaft swing link.

3. The spindle mechanism according to claim 1 or 2, wherein the spindle assembly is provided with first arc-shaped chutes in one-to-one correspondence with each of the virtual shaft swing links; the first end of each virtual shaft oscillating bar is provided with a first arc-shaped arm which is assembled in the corresponding first arc-shaped sliding groove in a sliding manner;

the inner concave surface of the first arcuate arm faces the first surface of the spindle assembly for supporting a flexible screen.

4. The spindle mechanism of claim 3, wherein the spindle assembly includes a main outer shaft and a main inner shaft fixedly connected to the main outer shaft; wherein, every first arc spout includes: the arc-shaped groove is arranged on the main outer shaft and is concave inwards, and the arc-shaped surface is arranged on the main inner shaft and covers the arc-shaped groove.

5. The spindle mechanism according to any one of claims 1 to 4, further comprising two screen supporting plates; each screen support plate is located between the spindle assembly and one of the swing assemblies adjacent to the spindle assembly and is used to support a flexible screen.

6. The hinge mechanism of claim 5, wherein the first side of the screen support plate is slidably coupled to the corresponding swing assembly and is rotatable about a second virtual axis;

the second side of the screen supporting plate is connected with the spindle assembly in a sliding mode and can rotate around a third virtual axis;

the second virtual axis and the third virtual axis are respectively parallel to the central line of the spindle assembly.

7. The hinge mechanism as claimed in claim 5 or 6, wherein the first side of the screen supporting plate is provided with a second arc-shaped arm, and the second side is provided with a third arc-shaped arm; wherein the inner concave surfaces of the second and third arcuate arms face the first surface of the spindle assembly for supporting a flexible screen;

the main shaft assembly is provided with a second arc-shaped sliding groove in sliding fit with the second arc-shaped arm;

the swing assembly is provided with a third arc-shaped sliding groove in sliding fit with the third arc-shaped arm.

8. A hinge mechanism according to any one of claims 5 to 7, wherein each support plate has a second surface for supporting a flexible screen;

the second surface of the supporting plate and the first surface of the main shaft assembly, which is used for supporting the flexible screen, are arc-shaped surfaces with the same radian.

9. The spindle mechanism according to any one of claims 1 to 8, further comprising two back plates; the two back plates are located on one side, away from the flexible screen, of the rotating shaft mechanism and are used for shielding gaps between the main shaft assembly and the two swinging assemblies in a one-to-one correspondence mode.

10. The hinge mechanism of claim 9, wherein when the two swing assemblies are in the first position, opposite sides of the two back plates are aligned to shield a side of the spindle assembly facing away from the flexible screen.

11. The spindle mechanism according to claim 9 or 10, wherein each back plate has a first side slidably connected to the spindle assembly and rotatable about a fourth virtual axis, and a second side slidably connected to and rotatable relative to the corresponding wobble assembly; wherein the content of the first and second substances,

the fourth virtual axis is parallel to the centerline of the spindle assembly.

12. The spindle mechanism according to any one of claims 9 to 11, wherein the first side of each back plate is provided with a fourth arc-shaped arm; a fourth arc-shaped sliding groove which is assembled with the fourth arc-shaped arm in a sliding manner is arranged in the main shaft assembly; wherein the content of the first and second substances,

an inner concave surface of the fourth arcuate arm faces away from the first surface of the spindle assembly for supporting a flexible screen.

13. The spindle mechanism according to any one of claims 9 to 12, wherein a slider is provided on the second side of each back plate; the swing assembly is provided with a sliding groove in sliding fit with the sliding block; wherein, the sliding block can rotate in the sliding groove; or the sliding block is rotatably connected with the second side of the back plate.

14. The spindle mechanism according to any one of claims 1 to 13, wherein the second end of the virtual spindle rocker has a fifth arc-shaped arm; the swing assembly corresponding to the virtual shaft swing rod is provided with an arc-shaped bulge matched with the fifth arc-shaped arm; the concave surface of the fifth arc-shaped arm is buckled on the arc-shaped bulge and can rotate relative to the arc-shaped bulge.

15. The spindle mechanism according to any one of claims 1 to 14, further comprising a linkage assembly; the linkage assembly comprises two synchronous swing rods;

the two synchronous swing rods are respectively arranged at two sides of the central line of the main shaft assembly;

a gear structure is arranged at the first end of each synchronous swing rod, and the gear structures of the two synchronous swing rods are meshed;

the second end of each synchronous swing rod is slidably assembled on the swing component positioned on the same side and can rotate relative to the swing component.

16. The spindle mechanism according to claim 15, further comprising a limit component corresponding to each of the synchronized swing links;

the spacing subassembly includes:

a damping surface disposed within the swing assembly;

a damping slider slidably mounted within the swing assembly; the damping slide block is rotatably connected with the second end of the corresponding synchronous swing rod; and a damping structure which is pressed against the damping surface is arranged in the damping slide block.

17. The spindle mechanism according to claim 16, wherein the damping structure comprises an elastic member and a damping ball disposed within a damping slider; the number of the damping slide blocks is two;

and two ends of the elastic piece are respectively pressed against the two damping balls and used for pushing the damping balls to be exposed outside the damping slide block.

18. The spindle mechanism according to claim 17, wherein the damping surface has a first concave surface, a convex surface, and a second concave surface arranged along a sliding direction of the damping slider;

when the included angle between the two swing assemblies is a first angle, the damping ball is matched with the first concave surface;

when the included angle between the two swing assemblies is a second angle, the damping ball is matched with the second concave surface; wherein the content of the first and second substances,

the first angle is greater than the second angle.

19. The spindle mechanism according to any one of claims 1 to 18, further comprising two frame connectors, the two frame connectors being arranged on opposite sides of a center line of the spindle assembly; the two swing assemblies are respectively fixedly connected with the frame connecting piece on the same side.

20. A mobile terminal, comprising a flexible screen, two housings and a hinge mechanism according to any one of claims 1 to 19; wherein the content of the first and second substances,

the two shells are respectively arranged at two sides of the rotating shaft mechanism, and the two swinging assemblies are respectively and fixedly connected with the two shells in a one-to-one correspondence manner;

the flexible screen continuously covers the two shells and the rotating shaft mechanism, and the flexible screen is fixedly connected with the two shells.