A folding hinge and a mobile inward folding terminal

Abstract

The present invention discloses a folding hinge and a mobile inward-folding terminal, comprising a boat-shaped shell and an articulated mechanism installed inside the shell, the articulated mechanism comprising a synchronization mechanism installed inside the boat-shaped shell, realizing the synchronous inward-folding and free opening and closing of the three-stage mobile inward-folding terminal and providing torque; locking mechanisms are symmetrically arranged on both sides of the synchronization mechanism, which are used to prevent the shell from being over-folded when the mobile inward-folding terminal is fully opened and to lock the shell when the shell is fully closed; virtual axis rotating mechanisms are arranged on one side of the two locking mechanisms, which can keep the rotation center of the mobile inward-folding terminal unchanged during the rotation process; the present invention forms an inward-folding hinge structure by symmetrically arranging two locking mechanisms and two virtual axis rotating mechanisms with the same structure in the inside of the boat-shaped shell with the synchronization mechanism, thereby reducing the volume of the hinge, ensuring that it can be adapted to a variety of mobile inward-folding terminals, and the arrangement of the same mechanism in the hinge makes the hinge processing convenient and reduces the production cost of the hinge.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic equipment, and in particular to a folding hinge and a mobile inward-folding terminal. Background Art

[0002] Folding phones are a common style of mobile phones. Oriental reservedness is very suitable for folding phones, which give people a very mature feeling and are the favorite of many business people. Inward-folding flexible screen devices are also gradually entering the market. The hinge mechanism of inward-folding flexible screen devices is an important mechanism of inward-folding flexible screen devices. However, the hinge mechanism has the following defects in the production process of inward-folding flexible screens:

[0003] (1) The three-stage inner folding hinge usually has multiple and complex action mechanisms, occupies a large space in the mobile terminal, and has poor compatibility with the mobile terminal;

[0004] (2) During the use of the mobile inward-folding terminal, due to the lack of necessary locking mechanism on the hinge, the shell of the terminal is prone to over-folding during use, resulting in damage to the flexible screen and reducing the service life of the terminal;

[0005] Therefore, it is of great significance to study an inward folding hinge which has a small space occupancy rate, a simple and efficient action mechanism, and can meet the needs of a variety of three-stage mobile inward folding terminals. Summary of the invention

[0006] The purpose of the present invention is to provide a folding hinge and a mobile inward-folding terminal to solve the problem raised in the above background technology that the existing mobile inward-folding terminals usually adopt a three-section inward-folding hinge, have many and complex action mechanisms, occupy a large space in the mobile terminal, and have poor compatibility between the hinge and the mobile terminal.

[0007] To achieve the above-mentioned object, the present invention provides the following technical solutions: a folding hinge, comprising a boat-shaped shell and an articulated mechanism installed inside the shell, characterized in that the articulated mechanism comprises a synchronous mechanism installed inside the boat-shaped shell to realize the synchronous inward folding and free opening and closing of the three-stage mobile inward folding terminal and provide torque;

[0008] The two sides of the synchronization mechanism are symmetrically provided with locking mechanisms for preventing the housing from being over-folded when the mobile inner folding terminal is fully opened and for locking the housing when the housing is fully closed, and the two locking mechanisms are installed inside the ship-shaped housing;

[0009] One side of the two locking mechanisms is provided with a virtual axis rotation mechanism which can keep the rotation center unchanged during the rotation of the mobile inward folding terminal, and the two virtual axis rotation mechanisms are also installed inside the ship-shaped shell.

[0010] As a preferred technical solution of the present invention, the synchronization mechanism includes a fixed cover plate installed in the middle of the ship-shaped shell, and the two ends of the fixed cover plate are fixedly connected to the first fixed block and the second fixed block installed on the inner side of the ship-shaped shell by screws respectively, and the middle part of the first fixed block is fixedly connected with a limiting pin through an interlaced manner, and the bottom of the first fixed block is stacked with a second cam curved surface slider and a first cam curved surface slider in sequence, and the middle parts of the first cam curved surface slider and the second cam curved surface slider are both provided with a strip-shaped slide groove for cooperating with the limiting pin for distance compensation when the two slide in linkage, a first double-layer curved surface rotating arm slidably connected to the slide groove inside the ship-shaped shell is provided between one end of the first cam curved surface slider and the first fixed block, and a The second double-layer curved surface rotating arm is connected by a groove sliding connection, the cam part of the first double-layer curved surface rotating arm is composed of a first outer cam surface B and a first inner cam surface B, the first outer cam surface B is fitted and connected with the second curved surface slider A at one end of the second cam curved surface slider, the first inner cam surface B is fitted and connected with the first curved surface slider A at one end of the first cam curved surface slider, the cam part of the second double-layer curved surface rotating arm is composed of a second outer cam surface B and a second inner cam surface B, the second outer cam surface B is fitted and connected with the second cam surface A at the other end of the second cam curved surface slider, the second inner cam surface B is fitted and connected with the first cam surface A at the other end of the first cam curved surface slider, and the middle part of the fixed cover plate is also provided with a strip groove for one end of the first double-layer curved surface rotating arm and one end of the second double-layer curved surface rotating arm to pass through;

[0011] It also includes a spring stopper disposed at the other end of the first fixed block and fixedly connected to the boat-shaped shell. The spring stopper and the end opposite to the first fixed block are each provided with a plurality of pin holes. A Chinese-shaped pin is inserted and connected in the pin hole of the first fixed block. A reset spring is sleeved on the outside of the Chinese-shaped pin to reduce the stress generated when the synchronization mechanism rotates. One end of the reset spring is disposed in the pin hole corresponding to the spring stopper.

[0012] As a preferred technical solution of the present invention, the locking mechanism includes a first flip cover plate and a second flip cover plate which are respectively fixedly connected to the two shells of the mobile inward folding terminal. A plurality of spring sleeves are fixedly provided at the bottom of the first flip cover plate and the second flip cover plate. A Z-shaped spring which supports the shell by utilizing the lever principle is sleeved inside each spring sleeve. One end of the Z-shaped spring is rotatably connected to a spring seat fixedly provided on the inner side of the corresponding boat-shaped shell.

[0013] As a preferred technical solution of the present invention, the virtual axis rotation mechanism includes a first grooved seat installed on the inner side of the boat-shaped shell, a second grooved seat and a third grooved seat installed on the inner side of the boat-shaped shell are respectively provided on both sides of the first grooved seat, a first rotating wing plate is slidably connected between an arcuate guide groove opened on one side of the first grooved seat and an arcuate guide groove opened on one side of the second grooved seat, and a second rotating wing plate is slidably connected between an arcuate guide groove opened on the other side of the first grooved seat and an arcuate guide groove opened on one side of the third grooved seat.

[0014] On the other hand, the present invention provides a mobile inward-folding terminal, comprising a folding hinge as described above, and also comprising a left shell and a right shell constituting the shell of the mobile inward-folding terminal, the left shell and the right shell are symmetrically arranged on both sides of the boat-shaped shell, and are hinged to the boat-shaped shell through a synchronization mechanism, a locking mechanism and a virtual axis rotation mechanism.

[0015] As a preferred technical solution of the present invention, the inner side of the left shell and the inner side of the right shell are respectively fixedly connected to the other end of the first double-layer curved rotating arm and the other end of the second double-layer curved rotating arm; the inner side of the left shell and the inner side of the right shell are respectively fixedly connected to the first flip cover plate and the second flip cover plate; and the inner side of the left shell and the inner side of the right shell are also respectively rotatably connected to the first rotating wing plate and the second rotating wing plate.

[0016] As a preferred technical solution of the present invention, the inner sides of the left shell and the right shell are respectively fixedly installed with a left inner cover plate and a right inner cover plate that are flush with the double-layer curved rotating arm, the flip cover plate and the rotating wing plate, and a flexible display screen is fixedly installed on the inner sides of the left inner cover plate and the right inner cover plate.

[0017] As a preferred technical solution of the present invention, when the left shell and the right shell are fully closed, the direction of the spring force generated by the two rows of Z-shaped springs rotating about the rotation center of the two shells is consistent with the closing direction of the shells; when the left shell and the right shell are fully unfolded, the spring force generated by the two rows of Z-shaped springs rotating about the rotation center of the two shells is greater than the self-gravity of the shells.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: a folding hinge and a mobile inward folding terminal of the present invention have the following beneficial effects:

[0019] 1) Inside the ship-shaped shell, two locking mechanisms and two virtual axis rotation mechanisms with the same structure are symmetrically arranged with a synchronous mechanism to form an inward-folding hinge structure, which reduces the volume of the hinge. While ensuring that it can be adapted to a variety of mobile inward-folding terminals, the same mechanism in the hinge makes the processing and assembly of the hinge more convenient, thereby reducing the production cost of the hinge;

[0020] 2) The housing of the mobile inward-folding terminal can be driven to rotate synchronously through the provided synchronization mechanism, and the housing can be synchronously linked with each other at the respective centers in cooperation with the provided virtual axis rotation mechanism, so as to ensure the smoothness of the mobile inward-folding terminal when opening and closing, and increase the user experience of the terminal;

[0021] 3) Through the provided locking mechanism, the shell of the mobile inward-folding terminal is locked during the process of being fully opened and fully closed, thereby preventing the shell from being over-folded and accidentally opened, further improving the user experience of the mobile inward-folding terminal. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the present invention;

[0023] Figure 2 It is a schematic diagram of the folding hinge structure of the present invention;

[0024] Figure 3 It is a schematic diagram of the unfolding and splitting structure of the folding hinge of the present invention;

[0025] Figure 4 It is a schematic diagram of the folding hinge closing structure of the present invention;

[0026] Figure 5 It is a schematic diagram of the closed and split structure of the folding hinge of the present invention;

[0027] Figure 6 An exploded view of the synchronization mechanism of the present invention;

[0028] Figure 7 It is an exploded diagram of the virtual axis rotating mechanism of the present invention;

[0029] Figure 8 For the present invention Figure 2 A schematic diagram of the enlarged structure at A;

[0030] Fig. 9 For the present invention Figure 4 A schematic diagram of the enlarged structure at B;

[0031] Fig.10 It is a force analysis diagram of the locking mechanism when the housing of the present invention is closed.

[0032] In the figure: 1, left housing; 11, left inner cover; 2, right housing; 21, right inner cover; 3, boat-shaped housing; 3a, synchronization mechanism; 3a1, fixed cover; 3a2, first fixed block; 3a3, second fixed block; 3a4, spring stopper; 3a5, return spring; 3a6, middle-shaped pin; 3a7, first cam curved surface slider; 3a71, first cam curved surface A; 3a72, first curved surface slider A; 3a8, second cam curved surface slider; 3a81, second cam curved surface A; 3a82, second curved surface slider A; 3a9, first double-layer curved surface rotating arm; 3a91, The first outer cam surface B; 3a92, the first inner cam surface B; 3a10, the second double-layer curved surface rotating arm; 3a101, the second outer cam surface B; 3a102, the second inner cam surface B; 3a11, the limit pin; 3b, the locking mechanism; 3b1, the first flip cover plate; 3b2, the second flip cover plate; 3b3, the Z-type spring; 3b4, the spring sleeve; 3b5, the spring seat; 3c, the virtual axis rotation mechanism; 3c1, the first grooved seat; 3c2, the second grooved seat; 3c3, the third grooved seat; 3c4, the first rotating wing plate; 3c5, the second rotating wing plate. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] Example

[0035] See also Figure 1-10 The present invention provides a folding hinge, including a boat-shaped shell 3 and an articulated mechanism installed inside the shell, the articulated mechanism including a synchronizing mechanism 3a installed inside the boat-shaped shell 3 to realize the synchronous folding and free opening and closing of the three-stage mobile inward folding terminal and provide torque;

[0036] The two sides of the synchronization mechanism 3a are symmetrically provided with locking mechanisms 3b for preventing the housing from being over-folded when the mobile inner folding terminal is fully opened and for locking the housing when the housing is fully closed, and the two locking mechanisms 3b are installed inside the boat-shaped housing 3;

[0037] One side of the two locking mechanisms 3 b is provided with a virtual axis rotation mechanism 3 c which can keep the rotation center unchanged during the rotation of the mobile inward folding terminal, and the two virtual axis rotation mechanisms 3 c are also installed inside the boat-shaped shell 3 .

[0038] Furthermore, the synchronization mechanism 3a includes a fixed cover plate 3a1 installed in the middle of the boat-shaped shell 3, and the two ends of the fixed cover plate 3a1 are fixedly connected to the first fixed block 3a2 and the second fixed block 3a3 installed on the inner side of the boat-shaped shell 3 by screws, and the middle of the first fixed block 3a2 is inserted and fixedly connected with a limiting pin 3a11, and the bottom of the first fixed block 3a2 is sequentially stacked with a second cam curved surface slider 3a8 and a first cam curved surface slider 3a7, and the middle of the first cam curved surface slider 3a7 and the second cam curved surface slider 3a8 The first and second cam surfaces 3a7 and 3a8 are provided with a strip-shaped sliding groove for cooperating with the limit pin 3a11 for distance compensation when the two slide in linkage, a first double-layer curved rotating arm 3a9 is provided between one end of the first cam curved sliding block 3a7 and the first fixed block 3a2, and a second double-layer curved rotating arm 3a10 is provided between one end of the second cam curved sliding block 3a8 and the first fixed block 3a2, and the cam part of the first double-layer curved rotating arm 3a9 is composed of the first outer cam curved surface B3a91 and the first outer cam curved surface B3a92. The first inner cam surface B3a92 is composed of the first outer cam surface B3a91 and the second curved surface slider A3a82 at one end of the second cam curved surface slider 3a8, the first inner cam surface B3a92 is matched with the first curved surface slider A3a72 at one end of the first cam curved surface slider 3a7, the cam part of the second double-layer curved surface rotating arm 3a10 is composed of the second outer cam surface B3a101 and the second inner cam surface B102, the second outer cam surface B3a101 is matched with the other end of the second cam curved surface slider 3a8 The second cam surface A3a81 is matched and connected, and the second inner cam surface B3a102 is matched and connected with the first cam surface A3a71 at the other end of the first cam surface slider 3a7. The middle part of the fixed cover plate 3a1 is also provided with a strip groove for one end of the first double-layer curved surface rotating arm 3a9 and one end of the second double-layer curved surface rotating arm 3a10 to pass through. The first double-layer curved surface rotating arm 3a9 and the second double-layer curved surface rotating arm 3a10 can be locked by the provided strip groove, and cooperate with the locking mechanism 3b, so that the mobile inward folding terminal is locked when it is opened;

[0039] It also includes a spring stopper 3a4 disposed at the other end of the first fixed block 3a2 and fixedly connected to the boat-shaped shell 3. The spring stopper 3a4 and the opposite end of the first fixed block 3a2 are provided with a plurality of pin holes. A Chinese-shaped pin 3a6 is inserted and connected in the pin hole of the first fixed block 3a2. The outer sleeve of the Chinese-shaped pin 3a6 is provided with a return spring 3a5 for reducing the stress generated when the synchronization mechanism 3a rotates. One end of the return spring 3a5 is disposed in the pin hole corresponding to the spring stopper 3a4. The return spring 3a5 can reduce the stress between the first cam curved surface slider 3a7 and the second cam curved surface slider 3a8 when they slide relative to each other.

[0040] Furthermore, the locking mechanism 3b includes a first flip cover plate 3b1 and a second flip cover plate 3b2 respectively fixedly connected to the two shells of the mobile inward folding terminal, and a plurality of spring sleeves 3b4 are fixedly provided at the bottom of the first flip cover plate 3b1 and the second flip cover plate 3b2, and each spring sleeve 3b4 is sleeved with a Z-shaped spring 3b3 that supports the shell by utilizing the lever principle, and one end of the Z-shaped spring 3b3 is engaged and rotatably connected with a spring seat 3b5 fixedly provided on the inner side of the corresponding boat-shaped shell 3, and through the provided spring sleeve 3b4, when the Z-shaped spring 3b3 rotates, one end of the Z-shaped spring 3b3 can rotate in the spring sleeve 3b4, and by changing the connection state of the Z-shaped spring 3b3 with the flip cover plate and the boat-shaped shell 3, the locking of the mobile inward folding terminal when it is opened and closed is achieved.

[0041] Furthermore, the virtual axis rotation mechanism 3c includes a first grooved seat 3c1 installed on the inner side of the boat-shaped shell 3, and the second grooved seat 3c2 and the third grooved seat 3c3 installed on the inner side of the boat-shaped shell 3 are respectively provided on both sides of the first grooved seat 3c1, and a first rotating wing plate 3c4 is slidably connected between the arc-shaped guide groove provided on one side of the first grooved seat 3c1 and the arc-shaped guide groove provided on one side of the second grooved seat 3c2, and the arc-shaped guide groove provided on the other side of the first grooved seat 3c1 and the arc-shaped guide groove provided on the third grooved seat 3c3 are slidably connected. A second rotating wing plate 3c5 is slidably connected between the arc-shaped guide grooves provided on one side of the grooved support 3c3, and the first rotating wing plate 3c4 is guided and slid in the arc-shaped guide grooves of the first grooved support 3c1 and the arc-shaped guide grooves of the second grooved support 3c2. The second rotating wing plate 3c5 is guided and slid in the arc-shaped guide grooves of the first grooved support 3c1 and the arc-shaped guide grooves of the third grooved support 3c3, so that the left shell 1 and the right shell 2 can cooperate with the synchronization mechanism 3a around their respective rotation centers for synchronous linkage.

[0042] On the other hand, the present invention provides a mobile inward-folding terminal, comprising a folding hinge as described in any one of the above, and also comprising a left shell 1 and a right shell 2 constituting the shell of the mobile inward-folding terminal, the left shell 1 and the right shell 2 are symmetrically arranged on both sides of a boat-shaped shell 3, and are hinged to the boat-shaped shell 3 through a synchronization mechanism 3a, a locking mechanism 3b and a virtual axis rotation mechanism 3c.

[0043] Furthermore, the inner side of the left shell 1 and the inner side of the right shell 2 are fixedly connected to the other end of the first double-layer curved rotating arm 3a9 and the other end of the second double-layer curved rotating arm 3a10 respectively; the inner side of the left shell 1 and the inner side of the right shell 2 are fixedly connected to the first flip cover plate 3b1 and the second flip cover plate 3b2 respectively; and the inner side of the left shell 1 and the inner side of the right shell 2 are also rotationally connected to the first rotating wing plate 3c4 and the second rotating wing plate 3c5 respectively, and the rotating first double-layer curved rotating arm 3a9, the second double-layer curved rotating arm 3a10, the first flip cover plate 3b1, the second flip cover plate 3b2, the first rotating wing plate 3c4 and the second rotating wing plate 3c5 can drive the left shell 1 and the right shell 2 to rotate.

[0044] Furthermore, the inner sides of the left shell 1 and the right shell 2 are respectively fixedly installed with a left inner cover 11 and a right inner cover 21 that are flush with the double-layer curved rotating arm, the flip cover and the rotating wing plate, and a flexible display screen is fixedly installed on the inner sides of the left inner cover 11 and the right inner cover 21. The installed left inner cover 11 and the right inner cover 21 facilitate the installation of the flexible display screen. The left inner cover 11 and the right inner cover 21 are flush with the double-layer curved rotating arm, the flip cover and the rotating wing plate, which can effectively reduce the stress on the Z-axis direction of the flexible display screen when the mobile inward folding terminal rotates, and ensure that the flexible display screen is always horizontally fitted with the left inner cover 11 and the right inner cover 21.

[0045] Furthermore, when the left shell 1 and the right shell 2 are fully closed, the direction of the spring force generated by the two rows of Z-shaped springs 3b3 rotating about the rotation center of the two shells is consistent with the closing direction of the shells; when the left shell 1 and the right shell 2 are fully unfolded, the spring force generated by the two rows of Z-shaped springs 3b3 rotating about the rotation center of the two shells is greater than the self-gravity of the shells, and the complete opening and closing of the left shell 1 and the right shell 2 are locked by the change of the state of the Z-shaped springs 3b3 during rotation.

[0046] When you need to use a mobile inward-folding terminal with this type of inward-folding hinge:

[0047] ① When the mobile inward folding terminal is opened: the user manually pulls the left housing 1 and the right housing 2, and the force acts on the synchronization mechanism 3a, the left housing 1 rotates counterclockwise, and the right housing 2 rotates clockwise. At the same time, the synchronization mechanism 3a performs a three-stage movement process, which is as follows:

[0048] The first stage: as the right housing 2 rotates, it acts on the second double-layer curved surface rotating arm 3a10, causing the second outer cam surface B3a101 of the second double-layer curved surface rotating arm 3a10 to rotate outward and squeeze the second cam surface A3a81 of the second cam curved surface slider 3a8, causing the second cam curved surface slider 3a8 to move toward the first fixed block 3a2;

[0049] The second stage: during the movement of the second cam curved surface slider 3a8, the second curved surface slider A3a82 will squeeze the first cam curved surface A3a71 of the first cam curved surface slider 3a7, and make the first cam curved surface slider 3a7 also rotate outward;

[0050] The third stage: the rotating first cam curved surface slider 3a7 moves toward the second fixed block 3a3, and its first curved surface slider A3a72 squeezes the first inner cam curved surface B3a92 of the first double-layer curved surface rotating arm 3a9, so that the first double-layer curved surface rotating arm 3a9 also rotates outward synchronously, and the left housing 1 connected to the first double-layer curved surface rotating arm 3a9 rotates synchronously;

[0051] The first cam curved surface slider 3a7 and the second cam curved surface slider 3a8 are provided with a strip-shaped slide groove to make distance compensation in the sliding process, and the first cam curved surface slider 3a7 and the second cam curved surface slider 3a8 are guided and limited by the limit pin 3a11, and the left housing 1 and the right housing 2 are synchronously rotated and opened by the first double-layer curved surface rotating arm 3a9 rotating counterclockwise and the second double-layer curved surface rotating arm 3a10 rotating clockwise. When the left housing 1 and the right housing 2 are fully opened, one end of the first double-layer curved surface rotating arm 3a9 and one end of the second double-layer curved surface rotating arm 3a10 just pass through the two strip grooves corresponding to the fixed cover plate 3a1, which play a certain locking role on the rotation of the left housing 1 and the right housing 2;

[0052] At the same time, when the left shell 1 and the right shell 2 are opened, the force will also act on the locking mechanism 3b, and the first flip cover plate 3b1 connected to the left shell 1 and the second flip cover plate 3b2 connected to the right shell 2 will compress the Z-shaped spring 3b3 to rotate. At this time, the Z-shaped spring 3b3 will generate a certain elastic force opposite to the rotation direction of the shell, and continue to rotate the left shell 1 and the right shell 2. When the Z-shaped spring 3b3 rotates through its middle position, the first flip cover plate 3b1 and the second flip cover plate 3b2 no longer compress the Z-shaped spring 3b3 inward, and the shell moves outward relative to the Z-shaped spring 3b3. The direction of the spring force of the Z-shaped spring 3b3 changes, providing a supporting force for the rotation of the shell; at the same time, when the left shell 1 and the right shell 2 are fully opened, the spring force generated by the Z-shaped spring 3b3 is converted into a supporting force for the left shell 1 and the right shell 2, and cooperates with the locking effect of the first double-layer curved rotating arm 3a9 and the second double-layer curved rotating arm 3a10 and the strip groove, which can effectively prevent the shell from folding back and causing damage to the flexible screen;

[0053] When the left shell 1 and the right shell 2 are opened, and the force acts on the virtual axis rotation mechanism 3c, the first rotating wing plate 3c4 connected to the left shell 1 is guided and rotated in the arc-shaped guide groove on one side of the first grooved seat 3c1 and the arc-shaped guide groove on one side of the second grooved seat 3c2, and the second rotating wing plate 3c5 connected to the right shell 2 is guided and rotated in the arc-shaped guide groove on the other side of the first grooved seat 3c1 and the arc-shaped guide groove on one side of the third grooved seat 3c3, so that the synchronously rotating left shell 1 and the right shell 2 can keep the rotation center unchanged during the rotation process;

[0054] ② When the mobile folding terminal is closed:

[0055] When the user manually pulls the left shell 1 and the right shell 2, the force also acts on the synchronization mechanism 3a, the locking mechanism 3b and the virtual axis rotation mechanism 3c. The synchronization mechanism 3a performs the above-mentioned three-stage opposite movement process, and cooperates with the virtual axis rotation mechanism 3c to also make the left shell 1 and the right shell 2 rotate synchronously around their respective rotation centers; in the locking mechanism 3b, after the two rows of Z-shaped springs 3b3 rotate to their respective middle positions, the direction of the spring force generated is consistent with the closing direction of the shell, so that the left shell 1 and the right shell 2 are locked, and the spring force generated by the Z-shaped spring 3b3 is used to prevent the shell from opening freely (such as Fig.10 shown).

[0056] In the description of the present invention, it is necessary to understand that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0057] In the present invention, unless otherwise clearly stipulated and limited, for example, it can be a fixed connection, a detachable connection, or an integrated one; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, for ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0058] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A folding hinge, comprising a boat-shaped shell and a hinge mechanism installed inside the shell, characterized in that: The articulated mechanism includes a synchronous mechanism installed inside the ship-shaped shell to realize the synchronous folding and free opening and closing of the three-stage mobile inward folding terminal and provide torque; The two sides of the synchronization mechanism are symmetrically provided with locking mechanisms for preventing the shell from being over-folded when the mobile inward folding terminal is fully opened and for locking the shell when the shell is fully closed, and the two locking mechanisms are installed inside the ship-shaped shell; One side of the two locking mechanisms is provided with a virtual axis rotation mechanism that can keep the rotation center unchanged during the rotation of the mobile inward folding terminal, and the two virtual axis rotation mechanisms are also installed inside the ship-shaped shell; The synchronization mechanism includes a fixed cover plate installed in the middle of the ship-shaped shell, and two ends of the fixed cover plate are fixedly connected to the first fixed block and the second fixed block installed on the inner side of the ship-shaped shell by screws respectively, and the middle part of the first fixed block is fixedly connected with a limiting pin through an interlaced manner, and the bottom of the first fixed block is stacked with a second cam curved surface slider and a first cam curved surface slider in sequence, and the middle parts of the first cam curved surface slider and the second cam curved surface slider are both provided with a strip slide groove for cooperating with the limiting pin for distance compensation when the two slide in linkage, a first double-layer curved surface rotating arm slidably connected to the slide groove inside the ship-shaped shell is provided between one end of the first cam curved surface slider and the first fixed block, and a second double-layer curved surface rotating arm slidably connected to the slide groove inside the ship-shaped shell is provided between one end of the first cam curved surface slider and the first fixed block, and a second double-layer curved surface rotating arm slidably connected to the slide groove inside the ship-shaped shell is provided between one end of the second cam curved surface slider and the first fixed block Two double-layer curved surface rotating arms, and the cam portion of the first double-layer curved surface rotating arm is composed of a first outer cam surface B and a first inner cam surface B, the first outer cam surface B is fitted and connected with the second curved surface slider A at one end of the second cam curved surface slider, the first inner cam surface B is fitted and connected with the first curved surface slider A at one end of the first cam curved surface slider, the cam portion of the second double-layer curved surface rotating arm is composed of a second outer cam surface B and a second inner cam surface B, the second outer cam surface B is fitted and connected with the second cam surface A at the other end of the second cam curved surface slider, the second inner cam surface B is fitted and connected with the first cam surface A at the other end of the first cam curved surface slider, and the middle part of the fixed cover plate is also provided with a strip groove for one end of the first double-layer curved surface rotating arm and one end of the second double-layer curved surface rotating arm to pass through; It also includes a spring stopper that is placed at the other end of the first fixed block and fixedly connected to the boat-shaped shell, and the spring stopper and the end opposite to the first fixed block are each provided with a plurality of pin holes, a Chinese-shaped pin is inserted and connected in the pin hole of the first fixed block, and a reset spring that reduces the stress generated when the synchronization mechanism rotates is sleeved on the outside of the Chinese-shaped pin, and one end of the reset spring is placed in the pin hole corresponding to the spring stopper; When the synchronization mechanism is fully opened, one end of the first double-layer curved surface rotating arm and one end of the second double-layer curved surface rotating arm pass through two corresponding strip grooves of the fixed cover plate.

2. A folding hinge according to claim 1, characterized in that: The locking mechanism includes a first flip cover plate and a second flip cover plate which are respectively fixedly connected to the two shells of the mobile inward folding terminal. A plurality of spring sleeves are fixedly provided at the bottom of the first flip cover plate and the second flip cover plate. A Z-shaped spring which supports the shell by lever principle is sleeved inside each spring sleeve. One end of the Z-shaped spring is engaged and rotatably connected with a spring seat fixedly provided on the inner side of the corresponding boat-shaped shell.

3. A folding hinge and a mobile inward-folding terminal according to claim 2, characterized in that: The virtual axis rotation mechanism includes a first grooved seat installed on the inner side of the boat-shaped shell, a second grooved seat and a third grooved seat installed on the inner side of the boat-shaped shell are respectively provided on both sides of the first grooved seat, a first rotating wing plate is slidably connected between an arcuate guide groove provided on one side of the first grooved seat and an arcuate guide groove provided on one side of the second grooved seat, and a second rotating wing plate is slidably connected between an arcuate guide groove provided on the other side of the first grooved seat and an arcuate guide groove provided on one side of the third grooved seat.

4. A mobile inward-folding terminal, comprising the folding hinge according to any one of claims 1 to 3, characterized in that: It also includes a left shell and a right shell that constitute a mobile inward folding terminal shell. The left shell and the right shell are symmetrically arranged on both sides of the boat-shaped shell and are hinged to the boat-shaped shell through a synchronization mechanism, a locking mechanism and a virtual axis rotation mechanism.

5. The mobile inward folding terminal according to claim 4, characterized in that: The inner side of the left shell and the inner side of the right shell are respectively fixedly connected to the other end of the first double-layer curved rotating arm and the other end of the second double-layer curved rotating arm; the inner side of the left shell and the inner side of the right shell are respectively fixedly connected to the first flip cover plate and the second flip cover plate; and the inner side of the left shell and the inner side of the right shell are also respectively rotatably connected to the first rotating wing plate and the second rotating wing plate.

6. The mobile inward folding terminal according to claim 5, characterized in that: The inner sides of the left shell and the right shell are respectively fixed with a left inner cover plate and a right inner cover plate flush with the double-layer curved rotating arm, the flip cover plate and the rotating wing plate, and a flexible display screen is fixedly installed on the inner sides of the left inner cover plate and the right inner cover plate.

7. The mobile inward folding terminal according to claim 6, characterized in that: When the left shell and the right shell are fully closed, the direction of the spring force generated by the two rows of Z-shaped springs rotating about the rotation center of the two shells is consistent with the closing direction of the shells; when the left shell and the right shell are fully unfolded, the spring force generated by the two rows of Z-shaped springs rotating about the rotation center of the two shells is greater than the self-weight of the shells.

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