CN211702084U

CN211702084U - Interior folding hinge and interior book mobile terminal

Info

Publication number: CN211702084U
Application number: CN202020184151.8U
Authority: CN
Inventors: 陈荣; 许钰锋
Original assignee: Dongguan Huanli Intelligent Technology Co ltd
Current assignee: Dongguan Huanli Intelligent Technology Co ltd
Priority date: 2020-02-19
Filing date: 2020-02-19
Publication date: 2020-10-16
Anticipated expiration: 2030-02-19

Abstract

The utility model discloses an interior folding hinge and interior book mobile terminal, including hinge mechanism, hinge mechanism includes: the synchronous mechanism is internally provided with a gear set which is used for providing mechanical feedback of the terminal and ensuring the smooth rotation of the hinge; the plurality of locking mechanisms are respectively provided with an elastic part which generates elastic supporting force and prevents the terminal shell from sagging or folding under the action of natural gravity; the screen support avoiding mechanisms are arranged corresponding to the left lifting plate and the right lifting plate and are used for realizing that the hinges can support the screen when being opened and can avoid space to bend the screen when being closed; the bottoms of the left cover plate and the right cover plate are respectively provided with a slide rail mechanism which prevents the screen from bulging and is tightly attached to the surfaces of the left cover plate and the right cover plate; the utility model discloses its inside same action structure all adopts the mounting means of looks isostructure and symmetry, has greatly simplified the structure complexity of interior folding hinge, has also ensured the stability when opening and shutting of hinge simultaneously, then multiple mobile terminal of adaptation that can be better.

Description

Interior folding hinge and interior book mobile terminal

Technical Field

The utility model relates to an electronic equipment field, in particular to interior folding hinge and interior book mobile terminal.

Background

Because large-screen mobile phones have obvious advantages in the visual and entertainment experience compared with small-screen mobile phones, the flagship mobile phone products of current mainstream manufacturers tend to be designed in a large-screen mode. However, a large-screen mobile phone has great disadvantages in terms of holding comfort and portability, and a small-screen mobile phone has great disadvantages. With the gradual commercialization of flexible display panels, foldable mobile phones are becoming the main direction for mobile phone development of mainstream equipment manufacturers due to the characteristic that the display panel can flexibly change the size in different use scenes.

Wherein interior folding cell-phone is as a common type in common folding cell-phone, in the in-process of carrying out production, it is essential accessory that interior folding hinge is, but traditional interior folding hinge structure actuating mechanism is many and complicated, numerous and diverse kind of actuating mechanism no matter all need drop into a large amount of cost of labor and time cost in design process and manufacturing process, traditional hinge is at the rotation in-process simultaneously, because actuating mechanism is complicated, lead to stability lower, the while is actual when being applied to mobile terminal, the flexible display screen is damaged more easily to the interior folding hinge of complex structure, the life of interior folding mobile terminal has been reduced, and traditional outer folding hinge is also relatively poor to different kinds of mobile terminal suitability.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an interior folding hinge and infolding mobile terminal to solve the tradition interior folding hinge structure actuating mechanism that proposes in the above-mentioned background art many and complicated, numerous and diverse actuating mechanism no matter all need drop into a large amount of cost of labor and time cost in design process and manufacturing process, traditional hinge is rotating the in-process simultaneously, because actuating mechanism is complicated, it is lower to lead to stability, actually when being applied to mobile terminal simultaneously, the problem of the flexible display screen is damaged more to the interior folding hinge of complex structure.

In order to achieve the above object, the utility model provides a following technical scheme: an internal folding hinge comprising an articulating mechanism, the articulating mechanism comprising:

the middle shell is internally provided with a plurality of mechanism mounting positions;

the two synchronous mechanisms are symmetrically arranged on the mounting positions at the two ends of the middle shell, and are internally provided with gear sets which are used for providing mechanical feedback of the terminal and ensuring smooth rotation of the hinge, and two rotating ends which are used for realizing synchronous rotation of the terminal shell;

the locking mechanisms are correspondingly arranged on the mounting positions of the middle shell, and each locking mechanism is provided with an elastic part which generates elastic supporting force and prevents the terminal shell from sagging or folding under the action of natural gravity;

the connecting mechanisms are correspondingly arranged on the mounting positions of the middle shell, and each connecting mechanism is provided with a lifting plate fixing seat for realizing the rotary connection of the middle shell with the left lifting plate and the right lifting plate;

the screen support avoiding mechanisms are arranged corresponding to the left lifting plate and the right lifting plate and are used for realizing that the hinges can support the screen when being opened and can avoid space to bend the screen when being closed;

and the screen supporting mechanism comprises a left cover plate and a right cover plate which are kept horizontal and are correspondingly arranged with the left lifting plate and the right lifting plate, and the bottoms of the left cover plate and the right cover plate are respectively provided with a sliding rail mechanism which enables the screen to be always in a tight state in the process of opening and closing the hinge, so that the screen is prevented from bulging and is tightly attached to the surface of the screen.

As a preferred technical proposal of the utility model, the synchronizing mechanism comprises a gear seat and a gear positioning plate which are arranged on a corresponding mounting position of the middle shell, a first middle gear rod and a second middle gear rod which are horizontally arranged are arranged at the bottom between the gear seat and the gear positioning plate in an alternating way, a left gear rod and a right gear rod which are respectively opposite to the first middle gear rod and the second middle gear rod are arranged at the top between the lifting plate fixing seat and the gear positioning plate in an alternating way, one end of the first middle gear rod and one end of the second middle gear rod are respectively sleeved with a first full tooth which realizes the synchronous rotation of the two middle gear rods, the two first full teeth are arranged in the gear seat and are connected in a meshing way, the other end of the second middle gear rod is also sleeved with a second full tooth which is arranged in the gear seat, the outer part of the left gear rod is sleeved with a second full tooth which realizes the synchronous rotation with the first middle gear rod, and with the first half tooth that full tooth meshing is connected on the first middle part gear pole, the outside of right gear pole has cup jointed the realization and has rotated with second middle part gear pole synchronization to half tooth on the right side that full tooth meshing is connected with the second, half tooth on the left side, first full tooth, the full tooth of second and half tooth on the right side form the gear train of lazytongs, the one end of left side gear pole and right gear pole has not cup jointed left swinging boom and right swivel arm, left swinging boom and right swivel arm form lazytongs's rotation end.

As a preferred technical scheme of the utility model, locking mechanical system is including installing reset spring A on middle casing, the club of its formation elasticity portion of cooperation has all been cup jointed at reset spring A's both ends, and the club is connected with left lifter plate and the inboard lifter plate inclined plane elastic support that corresponds the setting of right lifter plate.

As a preferred technical scheme of the utility model, coupling mechanism is still protruding including setting up in the inboard U type of left lifter plate and right lifter plate, the U type is protruding to be connected with the plush copper rotation that corresponds lifter plate fixing base avris through the pin.

As a preferred technical scheme of the utility model, the screen supports and dodges the mechanism and includes the spring holder, the middle part interlude of spring holder is connected with the ejector pin, and the outside cover of ejector pin is equipped with the reset spring B who arranges the spring holder inside and be used for the ejector pin to reset in, and the one end fixed mounting of spring holder has two positions relative and opens the linking arm that has the arc wall, and the inside sliding connection of arc wall has the sliding shaft, and the outside of sliding shaft has cup jointed the one end and has inconsistent connecting rod with the ejector pin, and the other end of connecting rod passes through the rotational pin and corresponds the U type piece rotation that sets up in the left lifter plate.

As a preferred technical scheme of the utility model, slide rail mechanism includes the slide, the inside sliding connection of slide has and corresponds left side apron and right side apron fixed mounting's slider, the both ends of slider are equipped with respectively with the inside fixed connection of slide and prevent first dog and the second dog that the slider breaks away from, and install the reset spring C that is used for the slider to reset between the one end of slider and the first dog.

As a preferred technical scheme of the utility model, the middle apron that cooperation left lifter plate and right lifter plate realization were installed and are supported flexible display screen is still installed at the top of middle casing, and when the hinge expanded completely, middle apron kept flushing with left lifter plate and right lifter plate.

A folding-in mobile terminal comprises the folding-in hinge, a left shell and a right shell which are used for forming a terminal shell, wherein the left shell and the right shell are respectively positioned on the left side and the right side of a middle shell and are kept horizontal with the middle shell.

As a preferred technical scheme of the utility model, left side swinging boom and right swinging boom respectively with the inboard end fixed connection of left casing and right casing, spring holder and slide all through the inboard fixed connection of screw and the left casing and the right casing that correspond.

Compared with the prior art, the beneficial effects of the utility model are that:

1) the synchronous mechanism composed of the same structure, the locking mechanism composed of the same structures and the connecting mechanism composed of the same structures are arranged in the two ends of the middle shell, a plurality of full gears and half gears which are arranged on the synchronous mechanism are matched, and the rotating arm is matched with the terminal shell, so that the hinge can drive the terminal shell to synchronously rotate and match clockwise and anticlockwise, and the plurality of gears which are meshed can ensure that the hinge can smoothly rotate and have better mechanical feedback feeling when the inward-folded mobile terminal is used; the ball rod of the locking mechanism is in rotating fit with the inclined plane of the lifting plate on the inner side of the lifting plate under the action of the return spring, the hinge is automatically opened and closed after force is applied by utilizing the lever principle, the locking of the terminal in the complete opening and closing process is realized, and the terminal shell is prevented from sagging or folding under the action of natural gravity; the left lifting plate and the right lifting plate enable the lifting plates to be in running fit with the middle shell through a connecting mechanism; and articulated mechanism still is provided with the screen that a plurality of looks isostructures are constituteed and supports dodges the mechanism for the hinge can support the screen when opening and can dodge the space when closed and bend for the screen, and the slide rail mechanism that a plurality of looks isostructures are constituteed makes the hinge open with closed in-process, and the screen is in the state of tightening always, prevents the screen uplift to hug closely in its surface, the cooperation screen supports dodges the mechanism, prevents that the hinge from rotating to cause the damage to flexible display screen, improves the life at terminal.

2) Two synchronizing mechanism, a plurality of locking mechanical system, a plurality of coupling mechanism, a plurality of screen support in this interior folding hinge dodge the mounting means that mechanism and a plurality of slide rail mechanism all adopted the same structure and symmetry, greatly simplified interior folding hinge's structural complexity, also ensured the stability when opening and shutting of hinge simultaneously, then multiple mobile terminal of adaptation (cell-phone, notebook computer and panel computer etc.) that can be better.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic view of the split structure of the present invention;

fig. 3 is an enlarged schematic view of fig. 2 at a point a according to the present invention;

fig. 4 is a schematic view of the development structure of the synchronizing mechanism of the present invention;

fig. 5 is a schematic view of a closed structure of the synchronizing mechanism of the present invention;

fig. 6 is a schematic view of the unfolding structure of the locking mechanism of the present invention;

fig. 7 is a schematic view of the closed structure of the locking mechanism of the present invention;

FIG. 8 is an analysis diagram of the expansion stress of the synchronization mechanism of the present invention;

FIG. 9 is a graph of the closed force analysis of the synchronizing mechanism of the present invention

FIG. 10 is an analysis diagram of the force analysis of the synchronization mechanism in the unfolded and reversed position;

fig. 11 is a schematic structural view of a screen support avoiding mechanism of the present invention;

fig. 12 is a schematic view of the screen support avoiding mechanism of the present invention;

fig. 13 is a schematic structural view of the slide rail mechanism of the present invention;

fig. 14 is a schematic view of the split structure of the slide rail mechanism of the present invention.

In the figure: 1. a hinge mechanism; 11. a middle housing; 111. a middle cover plate; 1a, a synchronizing mechanism; 1a1, left rotating arm; 1a2, right swivel arm; 1a3, left gear lever; 1a4, right gear lever; 1a5, left half tooth; 1a6, first full tooth; 1a7, second full tooth; 1a8, right half tooth; 1a9, a first middle gear lever; 1a10, second middle gear lever; 1a11, gear seat; 1a12, gear positioning plate; 1b, a locking mechanism; 1b1, cue; 1b2, return spring A; 1b3, lifter plate ramp; 1c, a connecting mechanism; 1c1, a lifting plate fixing seat; 1c2, pin; 1c3, U-shaped protrusion; 1d, a screen supporting and avoiding mechanism; 1d1, U-shaped block; 1d2, spring seat; 1d3, return spring B; 1d4, a mandril; 1d5, connecting arm; 1d6, sliding shaft; 1d7, connecting rod; 1e, a slide rail mechanism; 1e1, a slide; 1e2, first stop; 1e3, return spring C; 1e4, slider; 1e5, second stop; 12. a left lifter plate; 13. a right lifter plate; 2. a left housing; 21. a left cover plate; 3. a right housing; 31. and a right cover plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1

Referring to fig. 1 to 14, the present invention provides an internal folding hinge, which includes an articulating mechanism 1, wherein the articulating mechanism 1 includes:

a middle shell 11, in which a plurality of mechanism mounting positions are arranged for mounting components used in the hinge action structure;

the two synchronous mechanisms 1a are symmetrically arranged on installation positions at two ends of the middle shell 11, and the synchronous mechanisms 1a are internally provided with gear sets which are used for providing mechanical feedback of the terminal and ensuring smooth rotation of the hinge and two rotating ends which are used for realizing synchronous rotation of the terminal shell;

a plurality of locking mechanisms 1b correspondingly mounted on the mounting position of the middle shell 11, wherein the locking mechanisms 1b are respectively provided with an elastic part which generates elastic supporting force and prevents the terminal shell from sagging or folding under the action of natural gravity;

the connecting mechanisms 1c are correspondingly arranged on the mounting positions of the middle shell 11, and the connecting mechanisms 1c are respectively provided with a lifting plate fixing seat 1c1 for realizing the rotary connection of the middle shell 11 with the left lifting plate 12 and the right lifting plate 13;

a plurality of screen support avoiding mechanisms 1d which are installed corresponding to the left lifting plate 12 and the right lifting plate 13 and are used for realizing that the hinge can support the screen when opened and can avoid the space to bend the screen when closed;

and the screen supporting mechanism comprises a left cover plate 21 and a right cover plate 31 which are kept horizontal and are correspondingly arranged with the left lifting plate 12 and the right lifting plate 13, and the bottoms of the left cover plate 21 and the right cover plate 31 are respectively provided with a slide rail mechanism 1e which can make the screen be always in a tight state in the process of opening and closing the hinge, prevent the screen from bulging and cling to the surface of the screen.

In this embodiment, the synchronizing mechanism 1a includes a gear seat 1a11 and a gear positioning plate 1a12 mounted on a corresponding mounting position of the middle housing 11, two first middle gear rods 1a9 and two second middle gear rods 1a10 horizontally mounted between the gear seat 1a11 and the gear positioning plate 1a12 at the bottom thereof, a left gear rod 1a3 and a right gear rod 1a4 respectively aligned with the first middle gear rod 1a9 and the second middle gear rod 1a10 at the top thereof and inserted between the lift plate fixing seat 1a1 and the gear positioning plate 1a12, one ends of the first middle gear rod 1a9 and the second middle gear rod 1a10 are respectively sleeved with first full teeth 1a6 for realizing synchronous rotation of the two middle gear rods, the two first full teeth 1a6 are disposed inside the gear seat 1a11 and engaged with each other end of the second middle gear rod 1a10 is sleeved with second full teeth 7 a11 a in the gear seat 1a11, the left gear rod 1a3 is externally sleeved with a left half-tooth 1a5 which realizes synchronous rotation with the first middle gear rod 1a9 and is in meshed connection with a first full-tooth 1a6 on the first middle gear rod 1a9, the right gear rod 1a4 is externally sleeved with a right half-tooth 1a8 which realizes synchronous rotation with the second middle gear rod 1a10 and is in meshed connection with a 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 a synchronous mechanism 1a, one ends 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, and the left rotating arm 1a1 and the right rotating arm 1a2 form a rotating end of the synchronous mechanism 1 a.

Specifically, during the process of closing the folded-in terminal (as shown in fig. 5): the left shell 2 moves clockwise to drive the left rotating arm a11 to move clockwise, and the left rotating arm 1a1 which rotates clockwise drives the left gear rod 1a3 to move clockwise; when the left gear lever 1a3 moves clockwise, the left half-tooth 1a5 is engaged with the first full-tooth 1a6 of the first middle gear lever 1a9, and then drives the first middle gear lever 1a9 to move counterclockwise; since the first middle gear lever 1a9 and the second middle gear lever 1a10 are connected in a meshing rotation by two first full teeth 1a6, the second middle gear lever 1a10 is driven to move clockwise by the first middle gear lever 1a 9; the second middle gear rod 1a10 moving clockwise is meshed and connected with the right half-gear 1a8 on the right gear rod 1a4 through a second full-gear 1a7 to drive the right gear rod 1a4 to move anticlockwise, the right gear rod 1a4 rotating anticlockwise drives the right shell 2 to rotate anticlockwise through the right rotating arm 1a2, and then synchronous closing movement between the left shell and the right shell is achieved;

during unfolding of the folded-in terminal (as shown in fig. 4): the left shell 2 moves anticlockwise, the left rotating arm a11 is driven to move anticlockwise, and the left rotating arm 1a1 which rotates anticlockwise drives the left gear rod 1a3 to move anticlockwise; the left gear rod 1a3 drives the right gear rod 1a4 to move clockwise under the action of the gear in the gear set, and the clockwise rotating right gear rod 1a4 drives the right shell 2 to rotate clockwise through the right rotating arm 1a2, so that synchronous unfolding motion between the left shell and the right shell is realized.

In an embodiment, the locking mechanism 1b includes a return spring A1b2 installed on the middle housing 11, a cue 1b1 forming an elastic part is sleeved on each end of the return spring A1b2, and the cue 1b1 is elastically supported and connected with a lifter plate inclined surface 1b3 correspondingly arranged on the inner side of the left lifter plate 12 and the right lifter plate 13.

Specifically, during the closing of the folded-in terminal (as shown in fig. 7 and 9): when the hinge is closed, the left lifting plate 12 and the right lifting plate 13 rotate, the lifting plate inclined plane 1b3 at one end of the lifting plate presses the spherical surface of the ball rod 1b1 inwards, so that the two ball rods 1b1 move horizontally towards the middle and compress the return spring A1b2, and in the closing process, when the spherical surface passes over the inclined plane, the lifting plate is subjected to a force F3 provided by the return spring A1b2, and an inward force F4 is generated at the outer side of the lifting plate after the conversion (namely the lever principle) by the center of the lifting plate inclined plane 1b3, so that the lifting plate can realize automatic closing locking and simultaneously prevent the hinge from loosening;

during unfolding of the folded-in terminal (as shown in figures 6 and 8): when the lifting plate rotates until the spherical surface of the ball rod 1b1 contacts with the lifting plate inclined surface 1b3, the lifting plate inclined surface 1b3 receives a force F1 provided by a return spring A1b2 of a vertical inclined surface, and a downward force F2 is generated on the outer side of the lifting plate through conversion (namely a lever principle) by the center of the lifting plate inclined surface 1b3, so that the lifting plate can realize automatic opening and locking and prevent the rotating shaft from loosening;

when the fold-in terminal is in the open position and placed in reverse (as shown in figure 10): the lifting plate inclined plane 1b3 is provided with a force F1 by a return spring A1b2, namely the lifting plate inclined plane 1b3 is provided with a component force F1 'vertical to the lifting plate plane and a component force F1' parallel to the lifting plate; f1' is rotated by a horizontal distance L1 from the center of the lifting plate with the lifting plate inclined plane 1b 3; the horizontal distance between the natural gravity G of the terminal shell and the rotation center is L2, and since the hinge reaches the mechanical balance under the opening state, F1' xL 1 is G xL 2, when the hinge is placed reversely, the shells on the two sides are prevented from sagging under the action of the natural gravity, and the structure is prevented from collapsing.

Furthermore, the connecting mechanism 1c further includes a U-shaped protrusion 1c3 disposed inside the left lifting plate 12 and the right lifting plate 13, the U-shaped protrusion 1c3 is rotatably connected to a protrusion corresponding to the side of the lifting plate fixing seat 1c1 through a pin 1c2, and by installing the lifting plate fixing seat 1c1 inside the middle housing 11, the U-shaped protrusion 1c3 inside the left lifting plate 12 and the right lifting plate 13 is matched with the pin 1c2 to be rotatably connected to the protrusion at the side of the lifting plate fixing seat 1c1, so that the left lifting plate 12 and the right lifting plate 13 can be quickly installed on the middle housing 11, and can be prevented from falling off.

In this embodiment, the screen support avoiding mechanism 1d includes spring holder 1d2, the middle part of spring holder 1d2 alternates and is connected with ejector pin 1d4, the outside cover of ejector pin 1d4 is equipped with and arranges inside the spring holder 1d2 and is used for the reset spring B1d3 that ejector pin 1d4 resets in, the one end fixed mounting of spring holder 1d2 has two positions relative and opens the linking arm 1d5 that has the arc wall, the inside sliding connection of arc wall has sliding shaft 1d6, the outside of sliding shaft 1d6 has cup jointed the one end and has connected 1d7 that ejector pin 1d4 contradicts, the other end of connecting rod 1d7 passes through the rotation pin and corresponds the U type piece 1d1 rotation connection that sets up in left lifter plate 12 and the right lifter plate 13 outside.

Specifically, in the process of closing the folded-in terminal: the left shell 2 rotates clockwise, the right shell 3 rotates anticlockwise, the left lifting plate 12 and the right lifting plate 13 rotate to sink to drive the connecting rod 1d7 to rotate to sink, the sliding shaft 1d6 slides in the arc-shaped groove of the connecting arm 1d5, and the mandril 1d4 is extruded to move towards two sides; the bending of the screen by the avoiding space of the lifting plate in the hinge closing process is realized;

in the process of unfolding the fold-in terminal: the left shell 2 rotates anticlockwise, the right shell 3 rotates clockwise, and the left lifting plate 12 and the right lifting plate 13 rotate and ascend; meanwhile, the left lifting plate and the right lifting plate simultaneously drive the connecting rod 1d7 to rotate and ascend, the sliding shaft 1d6 slides in the arc-shaped groove of the connecting arm 1d5, and the reset spring B1d3 pushes the ejector rod 1d4 to move towards the middle; the top rod 1d4 pushes the connecting rod 1d7 to support the lifting plate, so that the screen is supported, and the lifting plate rises to support the screen in the process of opening the hinge.

In this embodiment, the slide rail mechanism 1e includes a slide base 1e1, a slide block 1e4 fixedly installed on the corresponding left cover plate 21 and right cover plate 31 is connected to the inside of the slide base 1e1 in a sliding manner, a first stopper 1e2 and a second stopper 1e5 fixedly connected to the inside of the slide base 1e1 and preventing the slide block 1e4 from being detached are respectively provided at two ends of the slide base 1e4, and a return spring C1e3 for returning the slide block 1e4 is installed between one end of the slide base 1e4 and the first stopper 1e 2.

Specifically, in the process of closing the folded-in terminal: the screen is bent and hidden in an avoiding area of the lifting plate, and the sliding block 1e4 is guided in the sliding seat 1e1 and slides outwards, so that the left cover plate 21 and the right cover plate 31 move outwards to tighten the screen and prevent the screen from bulging;

in the process of unfolding the fold-in terminal: the left lifting plate 12 and the right lifting plate 13 lift up to support the screen, the screen pulls the left cover plate 21 and the right cover plate 31 at the two sides towards the middle, and the slide block 1e4 compresses the return spring C1e3, so that the screen is in a tight state, and the screen is prevented from bulging.

Further, middle apron 111 that cooperation left lifter plate 12 and right lifter plate 13 realized installing and supporting the flexible display screen is still installed at the top of middle casing 11, and when the hinge was unfolded completely, middle apron 111 kept flushing with left lifter plate 12 and right lifter plate 13, ensured that the screen can install in terminal housing inboard fast.

The utility model provides a folding mobile terminal in, includes the folding hinge in of any one of the aforesaid, still includes left casing 2 and right casing 3 that is used for constituteing the terminal housing, and left casing 2 and right casing 3 are located the left side and the right side of middle casing 11 respectively to keep the level with middle casing 11, make this kind of folding hinge in can the multiple mobile terminal of better adaptation.

Furthermore, left swivel arm 1a1 and right swivel arm 1a2 are respectively with the inboard end fixed connection of left casing 2 and right casing 3, spring holder 1d2 and slide 1e1 all through the inboard fixed connection of screw with left casing 2 and right casing 3 that correspond, utilize left swivel arm 1a1 and right swivel arm 1a2 can drive left casing 2 and right casing 3 and carry out synchronous rotation.

In the description of the present invention, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.

In the present invention, unless otherwise explicitly specified or limited, for example, it may be fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An internal folding hinge comprising an articulation mechanism, characterized in that the articulation mechanism comprises:

2. An internal folding hinge according to claim 1, characterized in that: the synchronous mechanism comprises a gear seat and a gear positioning plate which are arranged on a corresponding mounting position of the middle shell, two first middle gear rods and two second middle gear rods which are horizontally arranged are arranged at the bottom between the gear seat and the gear positioning plate in an inserting way, a left gear rod and a right gear rod which are just opposite to the first middle gear rod and the second middle gear rod are respectively connected at the top between the lifting plate fixing seat and the gear positioning plate in an inserting way, one ends of the first middle gear rod and the second middle gear rod are respectively sleeved with a first full tooth for realizing the synchronous rotation of the two middle gear rods, the two first full teeth are arranged in the gear seat and are connected in a meshing way, the other end of the second middle gear rod is also sleeved with a second full tooth arranged in the gear seat, the outer part of the left gear rod is sleeved with a left half tooth for realizing the synchronous rotation with the first middle gear rod and is connected with the first full teeth on the first middle gear rod in a meshing way, the outside of right side gear pole has cup jointed the realization and has rotated with the second middle part gear pole is synchronous to half tooth on the right side that is connected with the meshing of the full tooth of second, half tooth on the left side, first full tooth, the full tooth of second and half tooth on the right side form the gear train of lazytongs, the one end of left side gear pole and right gear pole has not cup jointed left side swinging boom and right swivel arm, left side swinging boom and right swivel arm form lazytongs's rotation end.

3. An internal folding hinge according to claim 1, characterized in that: the locking mechanism comprises a return spring A arranged on the middle shell, the two ends of the return spring A are respectively sleeved with a ball rod matched with the return spring A to form an elastic part, and the ball rods are connected with the inner sides of the left lifting plate and the right lifting plate in an elastic supporting mode through lifting plate inclined planes correspondingly arranged.

4. An internal folding hinge according to claim 1, characterized in that: the connecting mechanism further comprises U-shaped protrusions arranged on the inner sides of the left lifting plate and the right lifting plate, and the U-shaped protrusions are rotatably connected with protruding heads on the sides of the corresponding lifting plate fixing seats through pins.

5. An internal folding hinge according to claim 1, characterized in that: the screen supports and dodges the mechanism and includes the spring holder, the middle part interlude of spring holder is connected with the ejector pin, and the outside cover of ejector pin is equipped with the reset spring B who arranges the spring holder inside and be used for the ejector pin to reset in, and the one end fixed mounting of spring holder has two relative positions and opens the linking arm that has the arc wall, and the inside sliding connection of arc wall has the sliding shaft, and the connecting rod that one end and ejector pin are inconsistent has been cup jointed to the outside of sliding shaft, and the other end of connecting rod passes through the rotational pin and corresponds the U type piece rotation that sets up in the left.

6. An internal folding hinge according to claim 5, characterized in that: the slide rail mechanism comprises a slide seat, the inside of the slide seat is connected with a slide block fixedly installed with a left cover plate and a right cover plate correspondingly in a sliding mode, a first stop block and a second stop block which are fixedly connected with the inside of the slide seat and prevent the slide block from being separated from are arranged at the two ends of the slide block respectively, and a reset spring C used for resetting the slide block is arranged between one end of the slide block and the first stop block.

7. An internal folding hinge according to claim 1, characterized in that: the top of middle casing still installs the middle apron that the cooperation left lifter plate and right lifter plate realized installing and supporting the flexible display screen, and when the hinge was unfolded completely, middle apron kept flushing with left lifter plate and right lifter plate.

8. An inward folding mobile terminal, comprising the inward folding hinge of any one of claims 2-7, characterized in that, it further comprises a left housing and a right housing for forming a terminal housing, the left housing and the right housing are respectively located at the left side and the right side of the middle housing and are kept horizontal with the middle housing, the left rotating arm and the right rotating arm are respectively fixedly connected with the inner side ends of the left housing and the right housing, and the spring seat and the sliding seat are respectively fixedly connected with the inner sides of the corresponding left housing and the right housing through screws.