Inward folding hinge and inward folding mobile terminal

Abstract

The present invention discloses an inner folding hinge and an inner folding mobile terminal, including an articulated mechanism, wherein the articulated mechanism comprises: a synchronization mechanism having an internally arranged gear set for providing mechanical feedback of the terminal and ensuring smooth rotation of the hinge; a plurality of locking mechanisms each having an elastic portion for generating an elastic supporting force and preventing the terminal shell from sagging or over-folding under the action of natural gravity; a plurality of screen support and avoidance mechanisms which are installed with corresponding left and right lifting plates and are used to enable the hinge to support the screen when opened and to avoid space for the screen to bend when closed; and a slide rail mechanism which prevents the screen from bulging and is closely attached to its surface is installed at the bottom of the left cover plate and the right cover plate; the present invention has the same internal action structure which adopts the same structure and symmetrical installation method, which greatly simplifies the structural complexity of the inner folding hinge, and also ensures the stability of the hinge when opening and closing, so as to better adapt to a variety of mobile terminals.

Description

Technical Field

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

[0002] Since large-screen phones have obvious advantages over small-screen phones in terms of visual and entertainment experience, most flagship phones from mainstream manufacturers tend to have large-screen designs. However, large-screen phones have greater disadvantages than small-screen phones in terms of grip comfort and portability. With the gradual commercialization of flexible display panels, foldable phones are becoming the main direction for mainstream device manufacturers to develop next-generation phones because their display panels can flexibly change size in different usage scenarios.

[0003] Among them, the inward folding mobile phone is a common type of common folding mobile phones. During the production process, the inward folding hinge is an indispensable accessory. However, the traditional inward folding hinge structure has many complex action mechanisms. The various types of action mechanisms require a lot of labor costs and time costs both in the design process and the manufacturing process. At the same time, the traditional hinge has low stability during the rotation process due to the complex action mechanism. At the same time, when actually applied to mobile terminals, the complex structure of the inward folding hinge is more likely to damage the flexible display, thereby reducing the service life of the inward folding mobile terminal. In addition, the traditional external folding hinge is also poorly adaptable to different types of mobile terminals. Summary of the invention

[0004] The purpose of the present invention is to provide an inward folding hinge and an inward folding mobile terminal to solve the problem that the traditional inward folding hinge structure proposed in the above background technology has many and complex action mechanisms, and the various types of action mechanisms require a lot of labor costs and time costs both in the design process and the manufacturing process. At the same time, the traditional hinge has low stability during the rotation process due to the complex action mechanism. At the same time, when actually applied to mobile terminals, the complex structure of the inward folding hinge is more likely to damage the flexible display screen.

[0005] To achieve the above object, the present invention provides the following technical solution: an inner folding hinge, comprising a hinge mechanism, the hinge mechanism comprising:

[0006] An intermediate housing, inside of which are arranged installation positions for multiple mechanisms;

[0007] Two synchronization mechanisms, the two synchronization mechanisms are symmetrically installed at the installation positions at both ends of the intermediate housing. The synchronization mechanism is provided with a gear set for providing mechanical feedback of the terminal and ensuring smooth rotation of the hinge, and is also provided with two rotating ends for realizing synchronous rotation of the terminal housing;

[0008] A plurality of locking mechanisms correspondingly mounted on the intermediate housing mounting positions, each of the plurality of locking mechanisms being provided with an elastic portion for generating an elastic supporting force and preventing the terminal housing from sagging or over-bending under the action of natural gravity;

[0009] A plurality of connection mechanisms correspondingly mounted on the mounting positions of the intermediate housing, and each of the plurality of connection mechanisms is provided with a lifting plate fixing seat for realizing rotational connection between the intermediate housing and the left lifting plate and the right lifting plate;

[0010] A plurality of screen support and avoidance mechanisms are installed corresponding to the left lifting plate and the right lifting plate, and are used to realize that the hinge can support the screen when it is opened and can avoid space for the screen to bend when it is closed;

[0011] And a screen supporting mechanism, the screen supporting mechanism includes a left cover plate and a right cover plate which are kept level with the left lifting plate and the right lifting plate and are arranged correspondingly, and the bottom of the left cover plate and the right cover plate are both installed with a slide rail mechanism which keeps the screen in a taut state during the opening and closing of the hinge to prevent the screen from bulging and closely adhere to its surface.

[0012] As a preferred technical solution of the present invention, the synchronization mechanism includes a gear seat and a gear positioning plate installed on the corresponding mounting position of the intermediate housing, two horizontally arranged first middle gear rods and a second middle gear rod are inserted and installed at the bottom between the gear seat and the gear positioning plate, and a left gear rod and a right gear rod respectively facing the first middle gear rod and the second middle gear rod are inserted and connected at the top between the lifting plate fixing seat and the gear positioning plate, one end of the first middle gear rod and the second middle gear rod are both sleeved with a first full tooth for realizing synchronous rotation of the two middle gear rods, and the two first full teeth are placed inside the gear seat and meshed The left gear rod is externally sleeved with a left half-tooth for realizing synchronous rotation with the first middle gear rod and meshing connection with the first full-tooth on the first middle gear rod; the right gear rod is externally sleeved with a right half-tooth for realizing synchronous rotation with the second middle gear rod and meshing connection with the second full-tooth; the left half-tooth, the first full-tooth, the second full-tooth and the right half-tooth form a gear set of a synchronous mechanism; one end of the left gear rod and the right gear rod are respectively sleeved with a left rotating arm and a right rotating arm; the left rotating arm and the right rotating arm form the rotating end of the synchronous mechanism.

[0013] As a preferred technical solution of the present invention, the locking mechanism includes a return spring A installed on the intermediate shell, and both ends of the return spring A are sleeved with ball rods that cooperate with it to form an elastic part, and the ball rods are elastically supported and connected to the corresponding lifting plate inclined surfaces on the inner sides of the left lifting plate and the right lifting plate.

[0014] As a preferred technical solution of the present invention, the connecting mechanism also includes a U-shaped protrusion arranged on the inner side of the left lifting plate and the right lifting plate, and the U-shaped protrusion is rotatably connected to the protrusion on the side of the corresponding lifting plate fixing seat through a pin.

[0015] As a preferred technical solution of the present invention, the screen support avoidance mechanism includes a spring seat, a push rod is inserted and connected in the middle of the spring seat, and the outer part of the push rod is sleeved with a reset spring B placed inside the spring seat and used for resetting the push rod. One end of the spring seat is fixedly installed with two connecting arms that are positioned opposite to each other and have arc grooves. A sliding shaft is slidably connected inside the arc groove, and the outer part of the sliding shaft is sleeved with a connecting rod whose end contacts the push rod, and the other end of the connecting rod is rotatably connected to the U-shaped blocks correspondingly arranged on the outer sides of the left lifting plate and the right lifting plate through a rotating pin.

[0016] As a preferred technical solution of the present invention, the slide rail mechanism includes a slide seat, the interior of the slide seat is slidably connected with a slider fixedly installed with the corresponding left cover plate and right cover plate, the two ends of the slider are respectively provided with a first stopper and a second stopper which are fixedly connected with the interior of the slide seat and prevent the slider from detaching, and a reset spring C for resetting the slider is installed between one end of the slider and the first stopper.

[0017] As a preferred technical solution of the present invention, the top of the intermediate shell is also equipped with an intermediate cover plate for cooperating with the left lifting plate and the right lifting plate to install and support the flexible display screen, and when the hinge is fully unfolded, the intermediate cover plate remains flush with the left lifting plate and the right lifting plate.

[0018] An inward folding mobile terminal comprises an inward folding hinge as described in any one of the above items, and also comprises a left shell and a right shell for constituting a terminal shell, wherein the left shell and the right shell are respectively located on the left and right sides of the middle shell and remain level with the middle shell.

[0019] As a preferred technical solution of the present invention, the left rotating arm and the right rotating arm are fixedly connected to the inner ends of the left shell and the right shell respectively, and the spring seat and the slide seat are fixedly connected to the inner sides of the corresponding left shell and the right shell by screws.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1) By arranging a synchronization mechanism with the same structure, a plurality of locking mechanisms with the same structure and a plurality of connecting mechanisms with the same structure inside the two ends of the intermediate shell, and utilizing the cooperation of a plurality of full gears and half gears arranged in the synchronization mechanism, and the cooperation of the rotating arm and the terminal shell, the hinge can drive the terminal shell to rotate synchronously clockwise and counterclockwise, and the meshing multiple gears ensure the smooth rotation of the hinge while also providing a good mechanical feedback when using the inward folding mobile terminal; the ball rod of the locking mechanism rotates with the inclined surface of the lifting plate inside the lifting plate under the action of the reset spring, and utilizes the principle of leverage to enable the hinge to automatically open and close after force is applied, and realizes The terminal is now locked when it is fully opened and closed to prevent the terminal shell from sagging or over-folding under the action of natural gravity; the left lifting plate and the right lifting plate are connected by a connecting mechanism to enable the lifting plate to rotate and cooperate with the middle shell; and the hinge mechanism is also provided with a plurality of screen support avoidance mechanisms composed of the same structure, so that the hinge can support the screen when it is opened and avoid space for the screen to bend when it is closed. The slide rail mechanisms composed of the same structure ensure that the screen is always in a taut state during the opening and closing of the hinge, preventing the screen from bulging and keeping it close to its surface, cooperating with the screen support avoidance mechanism to prevent the hinge rotation from damaging the flexible display screen and improve the service life of the terminal.

[0022] 2) The two synchronization mechanisms, multiple locking mechanisms, multiple connecting mechanisms, multiple screen support avoidance mechanisms and multiple sliding rail mechanisms in the inner folding hinge all adopt the same structure and symmetrical installation method, which greatly simplifies the structural complexity of the inner folding hinge, while also ensuring the stability of the hinge when opening and closing, so that it can better adapt to a variety of mobile terminals (mobile phones, laptops and tablets, etc.). BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the present invention;

[0024] Figure 2 It is a schematic diagram of the split structure of the present invention;

[0025] Figure 3 For the present invention Figure 2 An enlarged schematic diagram at A;

[0026] Figure 4 It is a schematic diagram of the structure of the synchronization mechanism of the present invention;

[0027] Figure 5 It is a schematic diagram of the closed structure of the synchronization mechanism of the present invention;

[0028] Figure 6 It is a schematic diagram of the expanded structure of the locking mechanism of the present invention;

[0029] Figure 7It is a schematic diagram of the closed structure of the locking mechanism of the present invention;

[0030] Figure 8 It is a force analysis diagram of the synchronization mechanism of the present invention;

[0031] Fig. 9 This is the closed force analysis diagram of the synchronous mechanism of the present invention

[0032] Fig.10 It is a force analysis diagram of the synchronous mechanism of the present invention when it is unfolded and placed in reverse;

[0033] Fig.11 It is a schematic diagram of the structure of the screen support avoidance mechanism of the present invention;

[0034] Fig.12 It is a schematic diagram of the screen support avoidance mechanism of the present invention;

[0035] Fig.13 It is a schematic diagram of the structure of the slide rail mechanism of the present invention;

[0036] Fig.14 It is a schematic diagram of the disassembled structure of the slide rail mechanism of the present invention.

[0037] In the figure: 1, hinge mechanism; 11, middle housing; 111, middle cover plate; 1a, synchronization mechanism; 1a1, left rotating arm; 1a2, right rotating arm; 1a3, left gear rod; 1a4, right gear rod; 1a5, left half gear; 1a6, first full gear; 1a7, second full gear; 1a8, right half gear; 1a9, first middle gear rod; 1a10, second middle gear rod; 1a11, gear seat; 1a12, gear positioning plate; 1b, locking mechanism; 1b1, ball rod; 1b2, return spring A; 1b3, lifting plate inclined surface; 1c, connection Mechanism; 1c1, lifting plate fixing seat; 1c2, pin; 1c3, U-shaped protrusion; 1d, screen support avoidance mechanism; 1d1, U-shaped block; 1d2, spring seat; 1d3, reset spring B; 1d4, push rod; 1d5, connecting arm; 1d6, sliding shaft; 1d7, connecting rod; 1e, slide rail mechanism; 1e1, slide seat; 1e2, first stopper; 1e3, reset spring C; 1e4, slider; 1e5, second stopper; 12, left lifting plate; 13, right lifting plate; 2, left shell; 21, left cover; 3, right shell; 31, right cover. DETAILED DESCRIPTION

[0038] 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.

[0039] Example 1

[0040] See also Figure 1-14 The present invention provides an inner folding hinge, an inner folding hinge, comprising an articulation mechanism 1, the articulation mechanism 1 comprising:

[0041] The intermediate housing 11 has a plurality of installation positions for the mechanisms therein for installing the corresponding components of the hinge action structure;

[0042] Two synchronization mechanisms 1a, the two synchronization mechanisms 1a are symmetrically installed at the installation positions at both ends of the intermediate housing 11, and the synchronization mechanism 1a is provided with a gear set for providing mechanical feedback of the terminal and ensuring smooth rotation of the hinge, and is also provided with two rotating ends for realizing synchronous rotation of the terminal housing;

[0043] A plurality of locking mechanisms 1b correspondingly mounted on the mounting positions of the intermediate housing 11, each of the plurality of locking mechanisms 1b being provided with an elastic portion for generating an elastic supporting force and preventing the terminal housing from sagging or over-bending under the action of natural gravity;

[0044] A plurality of connection mechanisms 1c correspondingly mounted on the mounting positions of the intermediate housing 11, and each of the plurality of connection mechanisms 1c is provided with a lifting plate fixing seat 1c1 for realizing rotational connection between the intermediate housing 11 and the left lifting plate 12 and the right lifting plate 13;

[0045] A plurality of screen support and avoidance mechanisms 1d are installed corresponding to the left lifting plate 12 and the right lifting plate 13 and are used to realize that the hinge can support the screen when it is opened and can avoid space for the screen to bend when it is closed;

[0046] And a screen supporting mechanism, the screen supporting mechanism includes a left cover plate 21 and a right cover plate 31 which are kept horizontal with the left lifting plate 12 and the right lifting plate 13 and are arranged correspondingly, and the bottom of the left cover plate 21 and the right cover plate 31 are installed with a slide rail mechanism 1e which keeps the screen in a taut state during the opening and closing of the hinges to prevent the screen from bulging and is closely attached to its surface.

[0047] In this embodiment, the synchronization mechanism 1a includes a gear seat 1a11 and a gear positioning plate 1a12 installed on the corresponding mounting position of the intermediate housing 11, two horizontally arranged first middle gear rods 1a9 and second middle gear rods 1a10 are inserted and installed at the bottom between the gear seat 1a11 and the gear positioning plate 1a12, and the top between the lifting plate fixing seat 1c1 and the gear positioning plate 1a12 is inserted and connected with a left gear rod 1a3 and a right gear rod 1a4 which are respectively opposite to the first middle gear rod 1a9 and the second middle gear rod 1a10, one end of the first middle gear rod 1a9 and the second middle gear rod 1a10 are sleeved with a first full tooth 1a6 for realizing synchronous rotation of the two middle gear rods, and the two first full teeth 1a6 are placed inside the gear seat 1a11 and meshed, and the second The other end of the middle gear rod 1a10 is also sleeved with a second full tooth 1a7 placed inside the gear seat 1a11, the outer part of the left gear rod 1a3 is sleeved with a left half tooth 1a5 for realizing synchronous rotation with the first middle gear rod 1a9 and meshingly connected with the first full tooth 1a6 on the first middle gear rod 1a9, the outer part of the right gear rod 1a4 is sleeved with a right half tooth 1a8 for realizing synchronous rotation with the second middle gear rod 1a10 and meshingly connected with the second full tooth 1a7, the left half tooth 1a5, the first full tooth 1a6, the second full tooth 1a7 and the right half tooth 1a8 form a gear set of the synchronization mechanism 1a, one end of the left gear rod 1a3 and the right gear rod 1a4 are respectively sleeved with a left rotating arm 1a1 and a right rotating arm 1a2, the left rotating arm 1a1 and the right rotating arm 1a2 form the rotating end of the synchronization mechanism 1a.

[0048] Specifically, during the closing process of the inner fold terminal (such as Figure 5 As shown in the figure): the left housing 2 moves clockwise, driving the left rotating arm a11 to move clockwise, and the left rotating arm 1a1 rotating clockwise drives the left gear rod 1a3 to move clockwise; when the left gear rod 1a3 moves clockwise, the left half-tooth 1a5 is meshed with the first full-tooth 1a6 on the first middle gear rod 1a9, thereby driving the first middle gear rod 1a9 to move counterclockwise; since the first middle gear rod 1a9 and the second middle gear rod 1a10 are connected by two first full-tooth 1a 6 is meshed and rotated, and then the second middle gear rod 1a10 is driven to move clockwise through the first middle gear rod 1a9; the second middle gear rod 1a10 moving clockwise is meshed and connected with the right half tooth 1a8 on the right gear rod 1a4 through the second full tooth 1a7, and then drives the right gear rod 1a4 to move counterclockwise, and the counterclockwise rotating right gear rod 1a4 drives the right housing 3 to rotate counterclockwise through the right rotating arm 1a2, and then realizes the synchronous closing movement between the left and right housings;

[0049] During the unfolding of the inner folding terminal (such as Figure 4As shown in the figure): the left housing 2 moves counterclockwise, which also drives the left rotating arm a11 to move counterclockwise. The left rotating arm 1a1 rotating counterclockwise drives the left gear rod 1a3 to move counterclockwise; the left gear rod 1a3 drives the right gear rod 1a4 to move clockwise under the action of the gears in the gear set, and the clockwise rotating right gear rod 1a4 drives the right housing 3 to rotate clockwise through the right rotating arm 1a2, thereby realizing the synchronous expansion movement between the left and right housings.

[0050] In an embodiment, the locking mechanism 1b includes a return spring A1b2 installed on the intermediate shell 11, and both ends of the return spring A1b2 are sleeved with a ball rod 1b1 that cooperates with it to form an elastic part, and the ball rod 1b1 is elastically supported and connected to the lifting plate inclined surface 1b3 corresponding to the inner side of the left lifting plate 12 and the right lifting plate 13.

[0051] Specifically, during the closing process of the inner fold terminal (such as Figure 7 and 9 As shown in the figure): when the hinge is closed, the left lifting plate 12 and the right lifting plate 13 rotate, and the lifting plate inclined surface 1b3 at one end of the lifting plate presses the spherical surface of the ball rod 1b1 inwardly, so that the two ball rods 1b1 move horizontally toward the middle and compress the return spring A1b2. During the closing process, when the spherical surface passes over the inclined surface, the lifting plate is subjected to the force F3 provided by the return spring A1b2, and after the center conversion (i.e., the lever principle) of the lifting plate inclined surface 1b3, the outer side of the lifting plate generates an inward force F4, so that the lifting plate can be automatically closed and locked while preventing the hinge from loosening;

[0052] During the unfolding of the inner folding terminal (such as Figure 6 and 8 As shown in the figure): the left lifting plate 12 and the right lifting plate 13 rotate. When the lifting plate rotates until the spherical surface of the ball rod 1b1 contacts the lifting plate inclined surface 1b3, the lifting plate inclined surface 1b3 is provided with a force F1 by a return spring A1b2 of a vertical inclined surface. After the conversion of the center of the lifting plate inclined surface 1b3 (i.e., the lever principle), the outer side of the lifting plate generates a downward force F2, so that the lifting plate can be automatically opened and locked while preventing the rotating shaft from loosening;

[0053] When the inner fold terminal is in the open state and placed in reverse (such as Fig.10 As shown): the lifting plate inclined surface 1b3 is provided with force F1 by the reset spring A1b2, that is, the lifting plate inclined surface 1b3 is subjected to the component force F1' perpendicular to the lifting plate plane and the component force F1" parallel to the lifting plate; the horizontal distance between F1' and the lifting plate and the center of rotation of the lifting plate inclined surface 1b3 is L1; the horizontal distance between the natural gravity G of the terminal shell and its rotation center is L2, because the hinge reaches mechanical balance in the open state, then F1'×L1=G×L2, so that when the hinge is placed in reverse, the shells on both sides are prevented from sagging under the action of natural gravity and the structure is prevented from being loose.

[0054] Furthermore, the connecting mechanism 1c also includes a U-shaped protrusion 1c3 arranged on the inner side of the left lifting plate 12 and the right lifting plate 13, and the U-shaped protrusion 1c3 is rotatably connected to the convex head on the side of the corresponding lifting plate fixing seat 1c1 through the pin 1c2. By installing the lifting plate fixing seat 1c1 inside the intermediate shell 11, the U-shaped protrusion 1c3 on the inner side of the left lifting plate 12 and the right lifting plate 13 is rotatably connected with the convex head on the side of the lifting plate fixing seat 1c1 by using the pin 1c2, so that the left lifting plate 12 and the right lifting plate 13 can be quickly installed with the intermediate shell 11 and prevented from falling off.

[0055] In this embodiment, the screen support avoidance mechanism 1d includes a spring seat 1d2, a push rod 1d4 is inserted and connected in the middle of the spring seat 1d2, and a reset spring B1d3 is sleeved on the outside of the push rod 1d4 and is placed inside the spring seat 1d2 and used to reset the push rod 1d4. One end of the spring seat 1d2 is fixedly installed with two connecting arms 1d5 that are positioned opposite to each other and have arc grooves. A sliding shaft 1d6 is slidably connected inside the arc groove. The outside of the sliding shaft 1d6 is sleeved with a connecting rod 1d7 whose end contacts the push rod 1d4. The other end of the connecting rod 1d7 is rotatably connected to the U-shaped block 1d1 correspondingly arranged on the outer sides of the left lifting plate 12 and the right lifting plate 13 through a rotating pin.

[0056] Specifically, during the closing process of the inward folding terminal: the left housing 2 rotates clockwise, the right housing 3 rotates counterclockwise, the left lifting plate 12 and the right lifting plate 13 rotate and sink, driving the connecting rod 1d7 to rotate and sink, and the sliding shaft 1d6 slides inside the arc groove of the connecting arm 1d5, and squeezes the top rod 1d4 to move to both sides; the lifting plate avoids space for the screen to bend during the hinge closing process;

[0057] During the unfolding process of the inward folding terminal: the left shell 2 rotates counterclockwise, the right shell 3 rotates clockwise, the left lifting plate 12 and the right lifting plate 13 rotate and rise; at the same time, the left and right lifting plates drive the connecting rod 1d7 to rotate and rise, and the sliding shaft 1d6 slides inside the arc groove of the connecting arm 1d5, and the return spring B1d3 pushes the push rod 1d4 to move to the middle; the push rod 1d4 pushes the connecting rod 1d7 to support the lifting plate, thereby supporting the screen, so that the lifting plate rises to support the screen during the hinge opening process.

[0058] In this embodiment, the slide rail mechanism 1e includes a slide seat 1e1, and the slide seat 1e1 is internally slidably connected with a slider 1e4 fixedly installed with the corresponding left cover plate 21 and right cover plate 31. The two ends of the slider 1e4 are respectively provided with a first stopper 1e2 and a second stopper 1e5 which are fixedly connected with the interior of the slide seat 1e1 and prevent the slider 1e4 from detaching, and a reset spring C1e3 for resetting the slider 1e4 is installed between one end of the slider 1e4 and the first stopper 1e2.

[0059] Specifically, during the closing process of the inward folding terminal: the screen is bent and hidden in the avoidance area of ​​the lifting plate, and the slider 1e4 is guided in the slide seat 1e1 and slides outward, so that the left cover plate 21 and the right cover plate 31 move outward to tighten the screen to prevent the screen from bulging;

[0060] During the unfolding process of the inward folding terminal: the left lifting plate 12 and the right lifting plate 13 rise to support the screen, the screen pulls the left cover plate 21 and the right cover plate 31 on both sides toward the middle, and the slider 1e4 compresses the return spring C1e3 to keep the screen in a taut state to prevent the screen from bulging.

[0061] Furthermore, an intermediate cover plate 111 is installed on the top of the intermediate shell 11 to cooperate with the left lifting plate 12 and the right lifting plate 13 to install and support the flexible display screen. When the hinge is fully unfolded, the intermediate cover plate 111 remains flush with the left lifting plate 12 and the right lifting plate 13, ensuring that the screen can be quickly installed on the inside of the terminal shell.

[0062] An inward-folding mobile terminal includes an inward-folding hinge of any one of the above items, and also includes a left shell 2 and a right shell 3 for constituting a terminal shell. The left shell 2 and the right shell 3 are respectively located on the left and right sides of the middle shell 11 and remain level with the middle shell 11, so that the inward-folding hinge can better adapt to a variety of mobile terminals.

[0063] Furthermore, the left rotating arm 1a1 and the right rotating arm 1a2 are fixedly connected to the inner ends of the left shell 2 and the right shell 3 respectively, and the spring seat 1d2 and the slide seat 1e1 are fixedly connected to the inner sides of the corresponding left shell 2 and the right shell 3 by screws. The left rotating arm 1a1 and the right rotating arm 1a2 can drive the left shell 2 and the right shell 3 to rotate synchronously.

[0064] 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.

[0065] 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.

[0066] 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. An inner folding hinge, comprising a hinge mechanism, characterized in that: The articulated mechanism includes: An intermediate housing, inside of which are arranged installation positions for multiple mechanisms; Two synchronization mechanisms, the two synchronization mechanisms are symmetrically installed at the installation positions at both ends of the intermediate housing. The synchronization mechanism is provided with a gear set for providing mechanical feedback of the terminal and ensuring smooth rotation of the hinge, and is also provided with two rotating ends for realizing synchronous rotation of the terminal housing; A plurality of locking mechanisms correspondingly mounted on the intermediate housing mounting positions, each of the plurality of locking mechanisms being provided with an elastic portion for generating an elastic supporting force and preventing the terminal housing from sagging or over-bending under the action of natural gravity; A plurality of connection mechanisms correspondingly mounted on the mounting positions of the intermediate housing, and each of the plurality of connection mechanisms is provided with a lifting plate fixing seat for realizing rotational connection between the intermediate housing and the left lifting plate and the right lifting plate; A plurality of screen support and avoidance mechanisms are installed corresponding to the left lifting plate and the right lifting plate, and are used to realize that the hinge can support the screen when it is opened and can avoid space for the screen to bend when it is closed; and a screen support mechanism, the screen support mechanism comprising a left cover plate and a right cover plate which are arranged horizontally with the left lifting plate and the right lifting plate and are arranged correspondingly, and a slide rail mechanism is installed at the bottom of the left cover plate and the right cover plate so that the screen is always in a taut state during the opening and closing of the hinge to prevent the screen from bulging and closely adhere to the surface thereof; The synchronization mechanism includes a gear seat and a gear positioning plate installed on the corresponding mounting position of the intermediate housing, and two horizontally arranged first middle gear rods and a second middle gear rod are inserted and installed at the bottom between the gear seat and the gear positioning plate, and a left gear rod and a right gear rod respectively facing the first middle gear rod and the second middle gear rod are inserted and connected at the top between the lifting plate fixing seat and the gear positioning plate, and one end of the first middle gear rod and the second middle gear rod are sleeved with a first full tooth to realize the synchronous rotation of the two middle gear rods, and the two first full teeth are placed inside the gear seat and meshed, and the second middle gear rod The other end of the gear rod is also sleeved with a second full tooth placed inside the gear seat, the outer portion of the left gear rod is sleeved with a left half tooth that can be rotated synchronously with the first middle gear rod and meshed with the first full tooth on the first middle gear rod, the outer portion of the right gear rod is sleeved with a right half tooth that can be rotated synchronously with the second middle gear rod and meshed with the second full tooth, the left half tooth, the first full tooth, the second full tooth and the right half tooth form a gear set of a synchronization mechanism, one end of the left gear rod and the right gear rod are respectively sleeved with a left rotating arm and a right rotating arm, the left rotating arm and the right rotating arm form the rotating end of the synchronization mechanism; The locking mechanism includes a return spring A installed on the intermediate shell, both ends of the return spring A are sleeved with ball rods that cooperate with it to form an elastic part, and the ball rods are elastically supported and connected to the corresponding lifting plate inclined surfaces on the inner sides of the left lifting plate and the right lifting plate.

2. The inner folding hinge according to claim 1, characterized in that: The connection mechanism also includes a U-shaped protrusion arranged on the inner side of the left lifting plate and the right lifting plate, and the U-shaped protrusion is rotatably connected to the protrusion on the side of the corresponding lifting plate fixing seat through a pin.

3. The inner folding hinge according to claim 1, characterized in that: The screen support avoidance mechanism includes a spring seat, a push rod is inserted in the middle of the spring seat, and a reset spring B is arranged inside the spring seat and used for resetting the push rod. One end of the spring seat is fixedly installed with two connecting arms with opposite positions and arc grooves, and a sliding shaft is slidably connected inside the arc groove. The outside of the sliding shaft is sleeved with a connecting rod with one end in contact with the push rod, and the other end of the connecting rod is rotatably connected to the U-shaped blocks correspondingly arranged on the outer sides of the left lifting plate and the right lifting plate through a rotating pin.

4. The inner folding hinge according to claim 3, characterized in that: The slide rail mechanism includes a slide seat, the interior of the slide seat is slidably connected with a slider fixedly installed with the corresponding left cover plate and right cover plate, the two ends of the slider are respectively provided with a first stopper and a second stopper which are fixedly connected with the interior of the slide seat and prevent the slider from detaching, and a reset spring C for resetting the slider is installed between one end of the slider and the first stopper.

5. The inner folding hinge according to claim 1, characterized in that: The top of the intermediate shell is also equipped with an intermediate cover plate that cooperates with the left lifting plate and the right lifting plate to install and support the flexible display screen, and when the hinge is fully unfolded, the intermediate cover plate remains flush with the left lifting plate and the right lifting plate.

6. An inward folding mobile terminal, comprising an inward folding hinge according to any one of claims 1 to 5, characterized in that: The device also includes a left shell and a right shell for forming a terminal shell. The left shell and the right shell are respectively located on the left and right sides of the middle shell and are kept level with the middle shell.

7. The inward folding mobile terminal according to claim 6, characterized in that: The left rotating arm and the right rotating arm are fixedly connected to the inner ends of the left shell and the right shell respectively, and the spring seat and the sliding seat are fixedly connected to the inner sides of the corresponding left shell and the right shell by screws.

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