CN112128221A

CN112128221A - Hinge mechanism and mobile terminal

Info

Publication number: CN112128221A
Application number: CN202011105909.5A
Authority: CN
Inventors: 周颖; 马颖江
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2020-10-15
Filing date: 2020-10-15
Publication date: 2020-12-25

Abstract

The invention provides an articulated mechanism and a mobile terminal, wherein the articulated mechanism comprises a base, a first rotating piece, a second rotating piece and a guide structure, wherein the first rotating piece is connected with the base, the first rotating piece is rotatably arranged around a first rotating center line, and is provided with a first guide groove; the second rotating piece is connected with the base, the second rotating piece is rotatably arranged around a second rotating center line, the second rotating center line is parallel to the first rotating center line, and the second rotating piece is provided with a second guide groove; the first guide groove and the second guide groove are in limit fit with the guide structure, so that the first rotating piece and the second rotating piece can rotate synchronously. By adopting the scheme, when one rotating part in the hinge mechanism rotates, the other rotating part can be driven to rotate through the transmission of the guide structure, so that the first rotating part and the second rotating part synchronously rotate. Compared with the existing hinge mechanism with synchronous rotation function, the mode has simple structure and few parts, thereby reducing the cost.

Description

Hinge mechanism and mobile terminal

Technical Field

The invention relates to the technical field of mobile terminals, in particular to a hinge mechanism and a mobile terminal.

Background

Most of mobile intelligent terminals on the market at present are bar phone terminals, and depending on the progress of display technology and the pursuit of consumers for new forms of mobile terminals, manufacturers have proposed folding mobile terminal products one after another, and the folding mobile terminals have become a great development trend.

The folding mode is divided into outward folding and inward folding, the outward folding is beneficial to operation, the inward folding is more beneficial to protecting the flexible display screen, and the mobile phone folding is mainly realized through the hinge mechanism. The existing hinge mechanism used on the folding terminal has various forms, in order to ensure that the two-part folding structure synchronously rotates, more parts are needed, the size of a single part is small, the hinge mechanism is very unfavorable for manufacturing and assembling, and the cost is high.

On the basis of this, it is necessary to design a hinge mechanism which is simple in structure and can meet functional requirements.

Disclosure of Invention

The invention provides a hinge mechanism and a mobile terminal, aiming at providing a new mode for realizing synchronous rotation of two parts, simplifying the structure of the hinge mechanism and reducing the cost.

In order to achieve the above object, according to one aspect of the present invention, there is provided a hinge mechanism including: a base;

the first rotating piece is connected with the base, is rotatably arranged around a first rotating center line and is provided with a first guide groove; the second rotating piece is connected with the base, can be rotatably arranged around a second rotating center line, is parallel to the first rotating center line, and is provided with a second guide groove; and the first guide groove and the second guide groove are in limit fit with the guide structure, so that the first rotating piece and the second rotating piece synchronously rotate.

Further, the extending directions of the first guide groove and the second guide groove are both inclined relative to the first rotation center line, and the inclination directions of the first guide groove and the second guide groove are opposite; the guide structure comprises a plate body, a first limiting part and a second limiting part, wherein the first limiting part and the second limiting part are arranged on the plate body at intervals, the first limiting part is located in the first guide groove, and the second limiting part is located in the second guide groove.

Further, the first guide groove is a spiral groove around the first rotation center line, the second guide groove is a spiral groove around the second rotation center line, and the rotation directions of the first guide groove and the second guide groove are opposite.

Furthermore, the first limiting piece is abutted against two side walls of the first guide groove, and the second limiting piece is abutted against two side walls of the second guide groove; the first rotation center line and the second rotation center line are symmetrically arranged relative to a preset plane, the first limiting piece and the second limiting piece are respectively located on two sides of the preset plane, the distance between the first limiting piece and the preset plane is L1, the distance between the second limiting piece and the preset plane is L2, wherein L1 and L2 are equal or L1 and L2 are not equal; in the process that the first rotating part and the second rotating part rotate relative to the base, the first limiting part and the second limiting part both move along the first rotating center line, and the moving distances of the first limiting part and the second limiting part are equal.

Further, the hinge mechanism further includes: the limiting structure is connected with the base, the limiting structure is in radial limiting fit with the guiding structure on the first rotating center line, and the guiding structure is movably arranged along the first rotating center line.

Further, the guide structure is provided with a limiting groove, the inner wall of the limiting groove is provided with a first step, and the extending direction of the first step is parallel to the first rotation center line; the limiting structure comprises a pressing block and a fastening piece, the fastening piece sequentially penetrates through the pressing block, the limiting groove and the base, the pressing block is provided with a second step, the second step is in limiting fit with the first step, and the length of the first step is larger than that of the second step.

Further, the first rotating member comprises a first supporting plate and a first rotating block arranged on the first supporting plate, and the first guide groove is positioned on the first rotating block; the base is provided with a first concave cavity, the first rotating block is rotatably arranged in the first concave cavity, and the first concave cavity is provided with an opening for avoiding the first guide groove.

Furthermore, the first rotating block is provided with a first arc-shaped guide groove, the inner wall of the first cavity is provided with a first arc-shaped rib, the first arc-shaped rib is rotatably arranged in the first arc-shaped guide groove, and the axis of the first arc-shaped guide groove and the axis of the first arc-shaped rib are both the first rotating center line.

Furthermore, a third arc-shaped guide groove is formed in the inner wall of the first concave cavity, the axis of the third arc-shaped guide groove is the first rotation center line, a limiting pin is arranged on the first rotation block, and the limiting pin is slidably arranged in the third arc-shaped guide groove.

Further, the first rotating part also comprises a first arc-shaped damping part arranged on the first supporting plate; the hinge mechanism further includes a first damping piece and a first elastic member that applies an elastic force to the first damping piece to press the first damping piece against the first arc-shaped damping piece.

Furthermore, the first arc-shaped damping part is provided with a matching surface in a wave crest and wave trough shape, and the first damping block is abutted with the matching surface; the base includes the main part and sets up first body of rod in the main part, first body of rod with first rotation center line is parallel, first elastic component with first damping piece all overlaps on the first body of rod, first damping piece with the relative position of first body of rod in circumference is fixed.

Furthermore, the first rod body is provided with a first limiting surface, a second limiting surface is arranged in the hole of the first damping block, and the second limiting surface is matched with the first limiting surface; the base is still including setting up the third body of rod in the main part, the hinge mechanism still includes third elastic component and stop part, the third elastic component cover is in on the third body of rod, the both ends of third elastic component respectively with the main part with the stop part butt, the both ends of first elastic component respectively with first damping piece with the stop part butt.

According to another aspect of the present invention, there is provided a mobile terminal including the hinge mechanism described above.

Furthermore, the mobile terminal further comprises a first rear cover, a second rear cover, a bottom cover and a flexible screen, wherein two side areas of the flexible screen are respectively connected with the first rear cover and the second rear cover, the middle area of the flexible screen can be bent, and the middle area of the flexible screen corresponds to the bottom cover; the first rotating piece of the hinge mechanism is connected with the first rear cover, the second rotating piece of the hinge mechanism is connected with the second rear cover, and the base of the hinge mechanism is connected with the bottom cover.

Further, a first rotation center line of the first rotating member and a second rotation center line of the second rotating member are both located on the neutral layer of the flexible screen, and a distance between the first rotation center line and the second rotation center line is larger than a minimum bending diameter of the neutral layer.

The hinge mechanism comprises a base, a first rotating piece, a second rotating piece and a guide structure, wherein the first rotating piece is connected with the base, the first rotating piece is rotatably arranged around a first rotating center line, and is provided with a first guide groove; the second rotating piece is connected with the base, the second rotating piece is rotatably arranged around a second rotating center line, the second rotating center line is parallel to the first rotating center line, and the second rotating piece is provided with a second guide groove; the first guide groove and the second guide groove are in limit fit with the guide structure, so that the first rotating piece and the second rotating piece can rotate synchronously. By adopting the scheme, the first rotating piece, the guide structure and the second rotating piece realize the drive matching relationship through the limit matching of the guide structure, the first guide groove and the second guide groove, so that one rotating piece in the hinge mechanism can drive the other rotating piece to rotate through the transmission of the guide structure when rotating, and the synchronous rotation of the first rotating piece and the second rotating piece is realized. Compared with the existing hinge mechanism with synchronous rotation function, the mode has simple structure and few parts, thereby reducing the cost.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic diagram of the hinge mechanism provided in the first embodiment of the present invention;

FIG. 2 shows the hinge mechanism of FIG. 1 with the guide structure removed;

FIG. 3 shows a folded schematic view of the hinge mechanism of FIG. 1;

FIG. 4 shows a schematic view of the guide structure in the hinge mechanism of FIG. 1;

FIG. 5 shows a schematic view of a first rotating member in the hinge mechanism of FIG. 1;

FIG. 6 shows a schematic view of the base in the hinge mechanism of FIG. 1;

FIG. 7 shows a schematic structural view (with the guide structure removed) of the hinge mechanism provided in the second embodiment of the present invention;

FIG. 8 shows a schematic view of the guide structure in the hinge mechanism of FIG. 7;

fig. 9 shows a schematic view of a first rotating member in the hinge mechanism provided in the third embodiment of the present invention;

FIG. 10 shows a schematic view of the base in the hinge mechanism provided by embodiment three of the present invention;

fig. 11 is a schematic diagram of a mobile terminal according to a fourth embodiment of the present invention;

fig. 12 is a schematic view of the mobile terminal of fig. 11 with the flexible screen removed.

Wherein the figures include the following reference numerals:

10. a base; 11. a first arc-shaped rib; 12. a third arcuate guide slot; 13. a main body; 14. a first rod body; 15. a third rod body; 20. a first rotating member; 21. a first guide groove; 22. a first support plate; 23. a first rotating block; 24. a first arcuate guide slot; 25. a spacing pin; 26. a first arcuate damping member; 30. a second rotating member; 31. a second guide groove; 40. a guide structure; 41. a plate body; 42. a first limit piece; 43. a second limiting member; 44. a limiting groove; 50. a limiting structure; 51. briquetting; 52. a fastener; 61. a first damping block; 62. a first elastic member; 63. a third elastic member; 64. a stopper; 71. a first rear cover; 72. a second rear cover; 73. a bottom cover; 74. a flexible screen.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 12, an embodiment of the present invention provides a hinge mechanism including: a base 10; a first rotating member 20 connected to the base 10, the first rotating member 20 being rotatably disposed around a first rotation center line, the first rotating member 20 having a first guide groove 21; a second rotating member 30 connected to the base 10, the second rotating member 30 being rotatably disposed around a second rotation center line, the second rotation center line being parallel to the first rotation center line, the second rotating member 30 having a second guide groove 31; the guide structure 40, the first guide groove 21 and the second guide groove 31 are in limit fit with the guide structure 40, so that the first rotating member 20 and the second rotating member 30 rotate synchronously.

By adopting the scheme, the first rotating piece 20, the guide structure 40 and the second rotating piece 30 realize the driving matching relationship through the limit matching of the guide structure 40 and the first guide groove 21 and the second guide groove 31, so that when one rotating piece in the hinge mechanism rotates, the other rotating piece can be driven to rotate through the transmission of the guide structure 40, and the synchronous rotation of the first rotating piece 20 and the second rotating piece 30 is realized. Compared with the existing hinge mechanism with synchronous rotation function, the mode has simple structure and few parts, thereby reducing the cost.

Specifically, the extending directions of the first guide groove 21 and the second guide groove 31 are both inclined with respect to the first rotation center line, and the inclined directions of the first guide groove 21 and the second guide groove 31 are opposite; the guiding structure 40 includes a plate body 41, and a first limiting member 42 and a second limiting member 43 that are disposed on the plate body 41 at intervals, wherein the first limiting member 42 is located in the first guiding groove 21, and the second limiting member 43 is located in the second guiding groove 31. This achieves a driving fit of the first rotation member 20, the guide structure 40 and the second rotation member 30, wherein the guide structure 40 can function as a transmission. For example, when the first rotating member 20 rotates relative to the base 10, the first guide slot 21 drives the guide structure 40 to move through the first limiting member 42, and the second limiting member 43 of the guide structure 40 drives the second rotating member 30 to rotate through the second guide slot 31, so that the two rotating members rotate synchronously. The screen can be prevented from being pulled or squeezed when the mobile terminal is applied, so that the screen can be protected. Wherein the inclination angles of the first guide groove 21 and the second guide groove 31 are equal. The plate body 41 has an arc-shaped structure.

In the present embodiment, the first guide groove 21 is a spiral groove around the first rotation center line, the second guide groove 31 is a spiral groove around the second rotation center line, and the rotation directions of the first guide groove 21 and the second guide groove 31 are opposite. The lead angles of the first guide groove 21 and the second guide groove 31 are equal to each other, and the lead angles of the two grooves may be equal to each other. With the above arrangement, when the first rotating member 20 rotates at a certain angle with respect to the base 10, it is ensured that the second rotating member 30 rotates at the same angle with respect to the base 10, so that the screen can be better protected.

In the present embodiment, the first limiting member 42 abuts against both side walls of the first guide groove 21, and the second limiting member 43 abuts against both side walls of the second guide groove 31, so that the driving engagement can be more preferably realized. The first rotation center line and the second rotation center line are symmetrically arranged relative to the preset plane, the first limiting member 42 and the second limiting member 43 are respectively located at two sides of the preset plane, a distance between the first limiting member 42 and the preset plane is L1, and a distance between the second limiting member 43 and the preset plane is L2, wherein L1 and L2 are equal as shown in fig. 4, or L1 and L2 are not equal as shown in fig. 8. In the process of rotating the first rotating member 20 and the second rotating member 30 relative to the base 10, the first limiting member 42 and the second limiting member 43 both move along the first rotation center line, and the moving distances of the first limiting member 42 and the second limiting member 43 are equal. This ensures that the second rotating member 30 rotates at the same angle with respect to the base frame 10 when the first rotating member 20 rotates at a certain angle with respect to the base frame 10.

In this embodiment, the hinge mechanism further includes: the limiting structure 50 and the limiting structure 50 are connected with the base 10, the limiting structure 50 is in radial limiting fit with the guiding structure 40 on the first rotation center line, and the guiding structure 40 is movably arranged along the first rotation center line. The limiting structure 50 can limit the position of the guiding structure 40, so that when the first rotating member 20 and the second rotating member 30 rotate, the guiding structure 40 can only move along the direction of the first rotation center line, thereby generating limiting and driving effects, and enabling the first rotating member 20 and the second rotating member 30 to rotate synchronously.

Specifically, the guiding structure 40 has a limiting groove 44, the inner wall of the limiting groove 44 has a first step, and the extending direction of the first step is parallel to the first rotation center line; the limiting structure 50 comprises a pressing block 51 and a fastening piece 52, the fastening piece 52 sequentially penetrates through the pressing block 51, the limiting groove 44 and the base 10, the pressing block 51 is provided with a second step, the second step is in limiting fit with the first step, and the length of the first step is larger than that of the second step. By the arrangement, the limit matching of the limit structure 50 and the guide structure 40 can be realized. And the guide structure 40 is facilitated to move in a predetermined direction under the guide of the first step and the second step.

In the present embodiment, the first rotating member 20 includes a first support plate 22 and a first rotating block 23 provided on the first support plate 22, and the first guide groove 21 is located on the first rotating block 23; the base 10 has a first cavity in which the first rotating block 23 is rotatably disposed, and the first cavity has an opening that avoids the first guide groove 21. This achieves the rotation fit of the first rotating member 20 and the base 10, and is compact and reduces the volume of the hinge mechanism. Wherein the second rotating member 30 may be provided in the same structure as the first rotating member 20.

As shown in fig. 5 and 6, the first rotating block 23 has a first arc-shaped guide groove 24, the inner wall of the first cavity has a first arc-shaped rib 11, the first arc-shaped rib 11 is rotatably disposed in the first arc-shaped guide groove 24, and both the axis of the first arc-shaped guide groove 24 and the axis of the first arc-shaped rib 11 are the first rotation center line. The first rotating block 23 can be guided by the cooperation of the first arc-shaped guide groove 24 and the first arc-shaped rib 11, so that the first rotating block 23 can be smoothly rotated. Specifically, the first rotating block 23 is a semi-cylindrical structure, and first arc-shaped guide grooves 24 are disposed on two sides of the first rotating block 23.

Alternatively, as shown in fig. 9 and 10, the inner wall of the first cavity has a third arc-shaped guide slot 12, the axis of the third arc-shaped guide slot 12 is the first rotation center line, the first rotation block 23 is provided with a limit pin 25, and the limit pin 25 is slidably disposed in the third arc-shaped guide slot 12. The first rotation block 23 is also guided by the sliding of the stopper pin 25 in the third arc-shaped guide groove 12. Wherein, the number of the limiting pins 25 is two, and the two limiting pins 25 are arranged in the same third arc-shaped guide groove 12 at intervals. Or, the inner wall of the first cavity is further provided with a fourth arc-shaped guide groove, the fourth arc-shaped guide groove and the third arc-shaped guide groove 12 are concentrically arranged, and a limiting pin 25 is respectively arranged in the fourth arc-shaped guide groove and the third arc-shaped guide groove 12.

In the present embodiment, the first rotating member 20 further includes a first arc-shaped damping member 26 provided on the first support plate 22; the hinge mechanism further includes a first damping block 61 and a first elastic member 62, and the first elastic member 62 applies an elastic force to the first damping block 61 to press the first damping block 61 against the first arc-shaped damping member 26. Through the arrangement, the user can play a damping effect in the process of rotating the first rotating part 20, so that the use experience of the user is improved.

Specifically, the first arc-shaped damping member 26 has a matching surface in a wave crest and a wave trough shape, and the first damping block 61 abuts against the matching surface; the base 10 comprises a main body 13 and a first rod 14 arranged on the main body 13, the first rod 14 is parallel to a first rotation center line, a first elastic part 62 and a first damping block 61 are sleeved on the first rod 14, and the relative positions of the first damping block 61 and the first rod 14 in the circumferential direction are fixed. Thus, during the rotation of the first rotating member 20, the first arc-shaped damping member 26 rotates relative to the first damping block 61, and the first damping block 61 and the mating surface are mated at different positions to achieve a damping effect.

Optionally, when the two rotation pieces are at 180 ° and 0 °, the first damping block 61 contacts the trough position of the first arc-shaped damping piece 26, so that the hinge mechanism can be kept stable when being unfolded and closed, the matching surface has a certain inclination when approaching 0 ° and 180 °, so that a resistance is formed when being closed from 180 °, an assisting force is formed when being unfolded to 180 °, and similarly, a resistance is formed when being unfolded from 0 °, an assisting force is formed when being closed to 0 °, and user experience is improved.

Further, the first rod 14 has a first limiting surface, a second limiting surface is disposed in the hole of the first damping block 61, and the second limiting surface is matched with the first limiting surface to prevent the first damping block 61 from rotating. The base 10 further comprises a third rod body 15 arranged on the main body 13, the hinge mechanism further comprises a third elastic part 63 and a stop part 64, the third elastic part 63 is sleeved on the third rod body 15, two ends of the third elastic part 63 are respectively abutted to the main body 13 and the stop part 64, and two ends of the first elastic part 62 are respectively abutted to the first damping block 61 and the stop part 64. With the above arrangement, each elastic member can be kept in a compressed state.

In this embodiment, the first guide groove 21 and the second guide groove 31 may be provided in the guide structure 40, the first stopper 42 may be provided in the first rotating member 20, and the second stopper 43 may be provided in the second rotating member 30, so that the first rotating member 20 and the second rotating member 30 can be rotated synchronously.

The invention also provides a mobile terminal which comprises the hinge mechanism. The mobile terminal can be a mobile phone, a tablet computer and the like.

Specifically, the mobile terminal further comprises a first rear cover 71, a second rear cover 72, a bottom cover 73 and a flexible screen 74, wherein two side areas of the flexible screen 74 are respectively connected with the first rear cover 71 and the second rear cover 72, a middle area of the flexible screen 74 can be bent, and the middle area of the flexible screen 74 corresponds to the bottom cover 73; the first rotating member 20 of the hinge mechanism is coupled to the first rear cover 71, the second rotating member 30 of the hinge mechanism is coupled to the second rear cover 72, and the base 10 of the hinge mechanism is coupled to the bottom cover 73. By this arrangement, the flexible screen 74 can be protected when the flexible screen 74 is bent. In this embodiment, the flexible screen 74 is folded in. And can also be provided with outward folding according to the requirement.

Further, the first rotation center line of the first rotating member 20 and the second rotation center line of the second rotating member 30 are located on the neutral layer of the flexible screen 74, and the distance between the first rotation center line and the second rotation center line is greater than the minimum bending diameter of the neutral layer. Therefore, the two rotating parts can always keep bilateral symmetry in movement, so that the neutral layer of the flexible screen 74 can always be freely bent without being extruded, and the flexible screen 74 is prevented from being damaged.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A hinge mechanism, comprising:

a base (10);

the first rotating piece (20) is connected with the base (10), the first rotating piece (20) is rotatably arranged around a first rotating center line, and the first rotating piece (20) is provided with a first guide groove (21);

the second rotating piece (30) is connected with the base (10), the second rotating piece (30) is rotatably arranged around a second rotating center line, the second rotating center line is parallel to the first rotating center line, and the second rotating piece (30) is provided with a second guide groove (31);

the first guide groove (21) and the second guide groove (31) are in limit fit with the guide structure (40) so that the first rotating piece (20) and the second rotating piece (30) can rotate synchronously.

2. A hinge mechanism according to claim 1,

the extending directions of the first guide groove (21) and the second guide groove (31) are inclined relative to the first rotation center line, and the inclined directions of the first guide groove (21) and the second guide groove (31) are opposite;

the guide structure (40) comprises a plate body (41), and a first limiting part (42) and a second limiting part (43) which are arranged on the plate body (41) at intervals, wherein the first limiting part (42) is located in the first guide groove (21), and the second limiting part (43) is located in the second guide groove (31).

3. A hinge mechanism according to claim 2, wherein the first guide groove (21) is a spiral groove around the first rotation center line, the second guide groove (31) is a spiral groove around the second rotation center line, and the rotation directions of the first guide groove (21) and the second guide groove (31) are opposite.

4. A hinge mechanism according to claim 2,

the first limiting piece (42) is abutted with two side walls of the first guide groove (21), and the second limiting piece (43) is abutted with two side walls of the second guide groove (31);

the first rotation center line and the second rotation center line are symmetrically arranged relative to a preset plane, the first limiting piece (42) and the second limiting piece (43) are respectively located on two sides of the preset plane, the distance between the first limiting piece (42) and the preset plane is L1, the distance between the second limiting piece (43) and the preset plane is L2, wherein L1 and L2 are equal or L1 and L2 are not equal;

in the process that the first rotating piece (20) and the second rotating piece (30) rotate relative to the base (10), the first limiting piece (42) and the second limiting piece (43) both move along the first rotation center line, and the moving distances of the first limiting piece (42) and the second limiting piece (43) are equal.

5. A hinge mechanism according to claim 1, further comprising:

the limiting structure (50) is connected with the base (10), the limiting structure (50) is in radial limiting fit with the guiding structure (40) on the first rotation center line, and the guiding structure (40) is movably arranged along the first rotation center line.

6. A hinge mechanism according to claim 5,

the guide structure (40) is provided with a limiting groove (44), the inner wall of the limiting groove (44) is provided with a first step, and the extending direction of the first step is parallel to the first rotation center line;

the limiting structure (50) comprises a pressing block (51) and a fastening piece (52), the fastening piece (52) sequentially penetrates through the pressing block (51), the limiting groove (44) and the base (10), the pressing block (51) is provided with a second step, the second step is in limiting fit with the first step, and the length of the first step is larger than that of the second step.

7. A hinge mechanism according to claim 1, wherein the first rotating member (20) includes a first support plate (22) and a first rotating block (23) provided on the first support plate (22), the first guide groove (21) being located on the first rotating block (23); the base (10) is provided with a first concave cavity, the first rotating block (23) is rotatably arranged in the first concave cavity, and the first concave cavity is provided with an opening for avoiding the first guide groove (21).

8. A hinge mechanism according to claim 7, wherein the first rotation block (23) has a first arc-shaped guide groove (24), the inner wall of the first cavity has a first arc-shaped rib (11), the first arc-shaped rib (11) is rotatably arranged in the first arc-shaped guide groove (24), and the axis of the first arc-shaped guide groove (24) and the axis of the first arc-shaped rib (11) are both the first rotation center line.

9. A hinge mechanism according to claim 7, wherein the inner wall of the first cavity is provided with a third arc-shaped guide groove (12), the axis of the third arc-shaped guide groove (12) is the first rotation center line, the first rotation block (23) is provided with a limit pin (25), and the limit pin (25) is slidably arranged in the third arc-shaped guide groove (12).

10. A hinge mechanism according to claim 7, wherein the first rotating member (20) further comprises a first arc-shaped damping member (26) provided on the first support plate (22); the hinge mechanism further includes a first damping block (61) and a first elastic member (62), the first elastic member (62) applying an elastic force to the first damping block (61) to press the first damping block (61) against the first arc-shaped damping member (26).

11. A hinge mechanism according to claim 10,

the first arc-shaped damping piece (26) is provided with a matching surface in a wave peak valley shape, and the first damping block (61) is abutted with the matching surface;

base (10) include main part (13) and set up first body of rod (14) on main part (13), first body of rod (14) with first rotation center line is parallel, first elastic component (62) with first damping piece (61) all overlap on first body of rod (14), first damping piece (61) with first body of rod (14) are fixed at the relative position of circumference.

12. A hinge mechanism according to claim 11,

the first rod body (14) is provided with a first limiting surface, a second limiting surface is arranged in the hole of the first damping block (61), and the second limiting surface is matched with the first limiting surface;

base (10) still including setting up third body of rod (15) on main part (13), the hinge mechanism still includes third elastic component (63) and stop part (64), third elastic component (63) cover is in on the third body of rod (15), the both ends of third elastic component (63) respectively with main part (13) with stop part (64) butt, the both ends of first elastic component (62) respectively with first damping piece (61) with stop part (64) butt.

13. A mobile terminal, characterized in that the mobile terminal comprises a hinge mechanism according to any one of claims 1-12.

14. The mobile terminal of claim 13, further comprising a first rear cover (71), a second rear cover (72), a bottom cover (73), and a flexible screen (74), wherein two side regions of the flexible screen (74) are respectively connected to the first rear cover (71) and the second rear cover (72), a middle region of the flexible screen (74) is bendable, and a middle region of the flexible screen (74) corresponds to the bottom cover (73); the first rotating piece (20) of the hinge mechanism is connected with the first rear cover (71), the second rotating piece (30) of the hinge mechanism is connected with the second rear cover (72), and the base (10) of the hinge mechanism is connected with the bottom cover (73).

15. The mobile terminal of claim 14, wherein a first rotational centerline of the first rotating member (20) and a second rotational centerline of the second rotating member (30) are both located on a neutral layer of the flexible screen (74), a distance between the first rotational centerline and the second rotational centerline being greater than a minimum bend diameter of the neutral layer.