Outward folding hinge and outward folding mobile terminal

Abstract

The present invention discloses an external folding hinge and an external folding mobile terminal, comprising a hinge mechanism, wherein the hinge mechanism comprises: two synchronization mechanisms; a locking mechanism that cooperates with the synchronization mechanism to achieve limited locking when the rotating end is fully unfolded and closed, and the rotating end of the synchronization mechanism is also provided with a guiding mechanism that slides with the locking mechanism and achieves folding distance compensation; a tension chain buckle module that cooperates with the chain inside the locking mechanism and provides continuous tension to the flexible screen when the hinge rotates; a connecting mechanism used to connect the two synchronization mechanisms and achieve sliding cooperation between the left sliding back shell and the right sliding back shell located on the back of the hinge to shield the gap of the terminal shell; the present invention adopts the same structure and symmetrical installation method for the same internal action structure, which greatly simplifies the structural complexity of the external folding hinge, and also ensures the stability of the hinge when opening and closing, so that it can better adapt to a variety of mobile terminals or other terminals with folding display requirements.

Description

Technical Field

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

[0002] Flexible screen is a new type of screen. For external flexible screen mobile terminals with flexible screens set on the outside of the mobile terminal, it is necessary to deal with the length change caused by the closing and opening of the hinge. For the middle part of the hinge, some hinges use a structure with multiple supports to achieve support and shape changes when bending and flattening.

[0003] However, the traditional external folding hinge structure has many complex action mechanisms, and the various types of action mechanisms require a lot of labor costs and time costs both in the design and manufacturing processes. At the same time, during the rotation process, the traditional hinge has low stability due to the complex action mechanism and poor linkage. At the same time, when actually applied to mobile terminals, the complex structure of the external folding hinge is more likely to damage the flexible display, reducing the service life of the external folding mobile terminal, and 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 outward folding hinge and an outward folding mobile terminal to solve the problem that the traditional outward 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, during the rotation process of the traditional hinge, the action mechanism is complex and the linkage is poor, resulting in low stability. At the same time, when actually applied to mobile terminals, the external folding hinge with a complex structure is more likely to damage the flexible display screen, thereby reducing the service life of the outward folding mobile terminal, and the traditional external folding hinge is also poorly adaptable to different types of mobile terminals.

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

[0006] Two synchronization mechanisms for the terminal housing to realize clockwise and counterclockwise synchronous rotation, wherein the synchronization mechanism is symmetrically provided with two rotating ends for rotational cooperation and for connecting the terminal housing and providing rotational tension to the flexible screen, and the synchronization mechanism is also provided with a synchronization gear buckle group for ensuring smooth rotation of the hinge, providing mechanical feedback, and driving the two rotating ends to rotate synchronously;

[0007] Cooperating with the synchronization mechanism to realize the limit locking when the rotating end is fully unfolded and closed, and the locking mechanism to prevent the hinge from over-folding, and the rotating end of the synchronization mechanism is also provided with a guide mechanism that slidably cooperates with the locking mechanism and realizes the folding distance compensation;

[0008] A tension chain buckle module that cooperates with the chain inside the locking mechanism and provides continuous tension to the flexible screen when the hinge rotates;

[0009] A connecting mechanism used to connect two synchronization mechanisms and realize sliding cooperation between the left sliding back shell and the right sliding back shell located at the back of the hinge, so that when the terminal is fully unfolded, the terminal shell gap is shielded;

[0010] And a sliding sheet is arranged on the connecting mechanism, combined with the flexible board to realize the installation of the flexible screen and keep the flexible screen at a constant length.

[0011] As a preferred technical solution of the present invention, the synchronization mechanism also includes a hinge fixing seat, which includes an arc-shaped plate, and a plurality of fixed seat shaft cores are arranged side by side on the surface of the arc-shaped plate, and left and right rotating hinges are provided on both sides of the arc-shaped plate to form two rotating ends, wherein one side of the left rotating hinge is provided with a plurality of left rotating hinge shaft cores that rotate with the fixed seat shaft core and guide it to rotate and fully unfold and limit it, wherein one side of the right rotating hinge is provided with a plurality of rotating folding shaft cores that also rotate with the fixed seat shaft core and guide it to rotate and fully unfold and limit it, and the surface of the hinge fixing seat is also provided with a tooth buckle cavity for installing a synchronous tooth buckle group, and the synchronous tooth buckle group includes a horizontally opposite installation on Two tooth buckle fixing seats inside the tooth buckle cavity, a left synchronous tooth buckle and a right synchronous tooth buckle with two end teeth meshing and rotating are rotatably installed between the two tooth buckle fixing seats, the sliding end of the left synchronous tooth buckle away from the tooth mouth is slidably connected to the left synchronous tooth buckle guide rail set at the bottom of the left rotating hinge, the sliding end of the right synchronous tooth buckle away from the tooth mouth is slidably connected to the right synchronous tooth buckle guide rail set at the bottom of the right rotating hinge, and the interiors of the left synchronous tooth buckle guide rail and the right synchronous tooth buckle guide rail are slidably connected to the limiting sliding grooves opened at the sliding ends of the left synchronous tooth buckle and the right synchronous tooth buckle through the synchronous tooth buckle limiting rods set, one end of the hinge fixing seat is provided with a limiter for limiting the connecting mechanism, and a hinge pressing plate is also installed on the top of the hinge fixing seat.

[0012] As a preferred technical solution of the present invention, the locking mechanism also includes two symmetrically arranged left sliding plates and right sliding plates, the inner side of the left sliding plate is provided with a left compression spring locking guide rail, and the inner side of the right sliding plate is provided with a right compression spring locking guide rail, and tension chain buckle modules are slidably installed inside the left compression spring locking guide rail and the right compression spring locking guide rail, the tension chain buckle module located in the left compression spring locking guide rail is rotatably connected to one side of the arc plate through a left chain, and the tension chain buckle module located in the right compression spring locking guide rail is rotatably connected to one side of the arc plate through a right chain. At the same time, a locking snap-in is provided on one side of the left compression spring locking guide rail and the right compression spring locking guide rail, the locking snap-in on the left compression spring locking guide rail is locked with the left compression spring locking device installed inside the left rotating hinge, and the locking snap-in on the right compression spring locking guide rail is locked with the right compression spring locking device installed inside the right rotating hinge, and at the same time, guide grooves are provided on the inner edges of the left rotating hinge and the right rotating hinge, and guide strips that slide with the guide grooves are provided at the bottom of the left sliding sheet and the right sliding sheet, and the guide grooves and the guide strips form a guiding mechanism that slides well.

[0013] As a preferred technical solution of the present invention, the tension chain buckle module includes a chain buckle seat, the chain buckle seat is slidably connected to the inside of the chain buckle, and two sliding grooves are opened on both sides of the chain buckle seat, wherein a first sliding rod inserted and connected to one end of the chain buckle is slidably provided in two sliding grooves opposite to each other, and a second sliding rod inserted and connected to the other end of the chain buckle is slidably provided in two sliding grooves opposite to each other, and a tensioner placed inside the chain buckle seat is provided between the first sliding rod and the second sliding rod, and one end of the tensioner is in conflict with the inner protrusion of the chain buckle, one end of the chain buckle is rotatably connected to the corresponding left chain and one end of the right chain through a pin, and one end of the chain buckle seat is fixedly connected to the corresponding left rotating hinge and right rotating hinge through a screw.

[0014] As a preferred technical solution of the present invention, the connecting mechanism includes a hinge connecting rod installed with the middle sliding plate of the sliding plate, and sliding blocks engaged with two limiters are installed at both ends of the hinge connecting rod. The sliding rods on both sides of the sliding block are respectively slidably connected with the hooks on the surface of the left sliding back shell and the right sliding back shell.

[0015] As a preferred technical solution of the present invention, the left compression spring locking device and the right compression spring locking device both include a pulley seat and a compression spring elastically connected to the pulley seat; the pulley seat of the left compression spring locking device and the pulley seat are both installed inside the left rotating hinge, and the pulley seat is locked with the locking bayonet on the left compression spring locking guide rail; the pulley seat of the right compression spring locking device and the pulley seat are both installed inside the right rotating hinge, and the pulley seat is locked with the locking bayonet on the right compression spring locking guide rail.

[0016] An outward-folding mobile terminal comprises an outward-folding hinge as described in any one of the above items, and also comprises a left shell and a right shell respectively installed on both sides of a sliding sheet and constituting a terminal shell, wherein the left sliding sheet and the right sliding sheet are respectively fixedly connected to the left shell and the right shell.

[0017] As a preferred technical solution of the present invention, support plates for supporting and installing the flexible screen are installed on the top of the left shell and the right shell, and the two support plates are arranged flush with the flexible plate.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1) Two mutually meshing synchronous buckles are arranged in the synchronous mechanism composed of the same structure, so that the synchronous buckles can drive the rotating hinge to realize the synchronous clockwise and counterclockwise rotation of the terminal shell, and the mutually meshing synchronous buckles make the hinge have a good mechanical feedback when rotating; the compression spring locking device in the locking mechanism composed of multiple identical structures is slidably matched with the compression spring locking guide rail, and is locked when the hinge is fully unfolded to prevent the hinge from being over-folded and causing damage to the terminal. At the same time, the chain arranged in the locking mechanism enables the hinge to cooperate with the sliding sheet and the flexible plate to continuously provide tension when rotating. The force keeps the screen in a taut state, preventing the screen from bulging and clinging to its surface, ensuring smooth support of the flexible screen; a plurality of tension chain buckle modules composed of the same structure slide with the chain buckle seat through the provided chain buckle, while ensuring the rotation of the chain, and at the same time cooperate with the compression spring locking guide rail to compensate for the folding distance of the chain during rotation, further ensuring the smooth rotation of the hinge; the sliding block provided in the connecting mechanism slides and rotates with the hook on the sliding back shell, so that when the mobile terminal is fully unfolded, the gap between the terminal shell is blocked, thereby improving the aesthetics of the mobile terminal;

[0020] 2) The two synchronization mechanisms, multiple locking mechanisms, and multiple tension chain buckle modules in the external folding hinge all adopt the same structure and symmetrical installation method, which greatly simplifies the structural complexity of the external folding hinge, while also ensuring the stability of the hinge when opening and closing, and can thus better adapt to a variety of mobile terminals (mobile phones, laptops, tablets, etc.) or other terminals with folding display requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the present invention;

[0022] Figure 2 It is a schematic diagram of the internal structure of the present invention;

[0023] Figure 3 It is a schematic diagram of the hinge mechanism structure of the present invention;

[0024] Figure 4 It is a schematic diagram of the hinge mechanism of the present invention;

[0025] Figure 5 It is a schematic diagram of the connection structure between the synchronization mechanism and the locking mechanism of the present invention;

[0026] Figure 6 It is a schematic diagram of the separation of the synchronization mechanism and the locking mechanism of the present invention;

[0027] Figure 7 It is a schematic diagram of the structure of the tension chain buckle module of the present invention;

[0028] Figure 8 It is a schematic diagram of the disassembly of the tension chain buckle module of the present invention;

[0029] Fig. 9 It is a schematic diagram of the hinge mechanism of the present invention;

[0030] Fig.10 It is a closed schematic diagram of the hinge mechanism of the present invention.

[0031] In the figure: 1, hinge mechanism; 11, sliding sheet; 111, flexible plate; 12, left sliding back shell; 13, right sliding back shell; 1a, synchronization mechanism; 1a1, hinge fixing seat; 1a11, arc plate; 1a12, fixing seat shaft core; 1a13, tooth buckle cavity; 1a131, tooth buckle fixing seat; 1a132, left synchronous tooth buckle; 1a133, right synchronous tooth buckle; 1a14, limiter; 1a2, left rotating folding leaf; 1a21, left rotating folding leaf shaft core; 1a22, left synchronous tooth buckle guide rail; 1a3, right rotating folding leaf; 1a31, right rotating folding leaf shaft core; 1a32, right synchronous tooth buckle Guide rail; 1a4, hinge pressure plate; 1b, locking mechanism; 1b1, left sliding plate; 1b11, left compression spring locking guide rail; 1b2, right sliding plate; 1b21, right compression spring locking guide rail; 1b3, left chain; 1b4, right chain; 1b5, left compression spring locking device; 1b6, right compression spring locking device; 1c, tension chain buckle module; 1c1, chain buckle; 1c2, chain buckle seat; 1c3, first sliding rod; 1c4, second sliding rod; 1c5, tensioner; 1d, connecting mechanism; 1d1, sliding block; 1d2, hook; 1d3, hinge connecting rod; 2, left shell; 3, right shell; 4, flexible screen. DETAILED DESCRIPTION

[0032] 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.

[0033] Example 1

[0034] See also Figure 1-10 The present invention provides an outward folding hinge, including a hinge mechanism 1, wherein the hinge mechanism 1 includes:

[0035] Two synchronization mechanisms 1a for realizing clockwise and counterclockwise synchronous rotation of the terminal housing, wherein the synchronization mechanism 1a is symmetrically provided with two rotating ends for rotational cooperation and for connecting the terminal housing and providing rotational tension to the flexible screen 4, and the synchronization mechanism 1a is also provided with a synchronization gear buckle group for ensuring smooth rotation of the hinge and driving the two rotating ends to rotate synchronously, providing synchronous mechanical feedback;

[0036] Cooperating with the synchronization mechanism 1a, the rotation end is locked when fully unfolded and closed, and the locking mechanism 1b prevents the hinge from being over-folded. The rotation end of the synchronization mechanism 1a is also provided with a guide mechanism that is slidably matched with the locking mechanism 1b and realizes folding distance compensation.

[0037] A tension chain buckle module 1c cooperates with the chain inside the locking mechanism 1b and provides continuous tension to the flexible screen 4 when the hinge rotates;

[0038] A connecting mechanism 1d for connecting two synchronization mechanisms 1a and realizing sliding cooperation between the left sliding back shell 12 and the right sliding back shell 13 located at the back of the hinge, so that when the terminal is fully unfolded, the terminal shell gap is shielded;

[0039] And a sliding sheet 11 is arranged on the connecting mechanism 1d, combined with the flexible board 111 to realize the installation of the flexible screen 4 and provide constant length protection for the flexible screen 4.

[0040] In this embodiment, the synchronization mechanism 1a also includes a hinge fixing seat 1a1, which includes an arc-shaped plate 1a11, and a plurality of fixed seat shaft cores 1a12 are arranged side by side on the surface of the arc-shaped plate 1a11. A left rotating hinge 1a2 and a right rotating hinge 1a3 forming two rotating ends are arranged on both sides of the arc-shaped plate 1a11, wherein one side of the left rotating hinge 1a2 is provided with a plurality of left rotating hinge shaft cores 1a121 which are rotatably matched with the fixed seat shaft core 1a12 and guide it to rotate and fully unfold and limit, wherein one side of the right rotating hinge 1a3 is provided with a plurality of rotating hinge shaft cores 1a121 which are also rotatably matched with the fixed seat shaft core 1a12 and guide it to rotate and fully unfold and limit, and the surface of the hinge fixing seat 1a1 is also provided with a tooth buckle cavity 1a13 for installing a synchronous tooth buckle group, and the synchronous tooth buckle group includes two tooth buckle fixed members horizontally installed inside the tooth buckle cavity 1a13 A fixed seat 1a131, a left synchronous tooth buckle 1a132 and a right synchronous tooth buckle 1a133 with two end teeth meshing and rotating are rotatably installed between the two tooth buckle fixed seats 1a131, the sliding end of the left synchronous tooth buckle 1a132 away from the tooth gap is guided and slidably connected with the left synchronous tooth buckle guide rail 1a22 set at the bottom of the left rotating hinge 1a2, the sliding end of the right synchronous tooth buckle 1a133 away from the tooth gap is guided and slidably connected with the right synchronous tooth buckle guide rail 1a32 set at the bottom of the right rotating hinge 1a3, and the interiors of the left synchronous tooth buckle guide rail 1a22 and the right synchronous tooth buckle guide rail 1a32 are respectively slidably connected with the limiting sliding grooves opened at the sliding ends of the left synchronous tooth buckle 1a132 and the right synchronous tooth buckle 1a133 through the synchronous tooth buckle limiting rods set, one end of the hinge fixed seat 1a1 is provided with a limiter 1a14 for limiting the connecting mechanism 1d, and the top of the hinge fixed seat 1a1 is also installed with a hinge pressing plate 1a4.

[0041] Specifically, during the closing process of the outward folding mobile terminal (such as Fig.10 As shown in the figure): the left shell 2 moves counterclockwise, and the left rotating hinge 1a2 is driven to move counterclockwise under the action of the synchronous gear buckle group. The left synchronous gear buckle 1a132 slidingly placed in the left synchronous gear buckle guide rail 1a22 also rotates counterclockwise as the left rotating hinge 1a2 rotates. When the left synchronous gear buckle 1a132 moves counterclockwise, due to the meshing connection between the left synchronous gear buckle 1a132 and the right synchronous gear buckle 1a133, the right synchronous gear buckle 1a133 slidingly placed in the right synchronous gear buckle guide rail 1a32 is driven to slide and rotate clockwise, and then the right rotating hinge 1a3 is driven to rotate clockwise, thereby realizing the synchronous closing movement between the left and right shells, and the synchronous gear buckle limit rods of the left synchronous gear buckle 1a132 and the right synchronous gear buckle 1a133 are respectively engaged with the left synchronous gear buckle guide rail 1a22 and the right synchronous gear buckle

[0042] Under the cooperation of the limiting slide groove of the guide rail, the guide sliding is then realized to compensate for the distance when the synchronous tooth buckle rotates and folds, thereby preventing damage to the flexible screen 4;

[0043] During the unfolding of the external folding terminal (such as Fig. 9 As shown in the figure): the left shell 2 moves clockwise, and likewise drives the left rotating hinge 1a2 to move clockwise. The clockwise rotating left rotating hinge 1a2 drives the left synchronous tooth buckle 1a132 to move clockwise. The left synchronous tooth buckle 1a132 drives the right synchronous tooth buckle 1a133 to move counterclockwise under the meshing action of the tooth mouth. The counterclockwise rotating right synchronous tooth buckle 1a133 then drives the right rotating hinge 1a3 to rotate counterclockwise through the right synchronous tooth buckle guide 1a32. The counterclockwise rotating right rotating hinge 1a3 drives the right shell 3 to rotate counterclockwise as well, thereby realizing the synchronous unfolding movement between the left and right shells.

[0044] In this embodiment, the locking mechanism 1b also includes two symmetrically arranged left sliding pieces 1b1 and right sliding pieces 1b2, the inner side of the left sliding piece 1b1 is provided with a left compression spring locking guide rail 1b11, and the inner side of the right sliding piece 1b2 is provided with a right compression spring locking guide rail 1b21, and the tension chain buckle module 1c is slidably installed inside the left compression spring locking guide rail 1b11 and the right compression spring locking guide rail 1b21, the tension chain buckle module 1c located in the left compression spring locking guide rail 1b11 is rotationally connected to one side of the arc plate 1a11 through the left chain 1b3, and the tension chain buckle module 1c located in the right compression spring locking guide rail 1b21 is rotationally connected to one side of the arc plate 1a11 through the right chain 1b4. Dynamic connection, at the same time, one side of the left compression spring locking guide rail 1b11 and the right compression spring locking guide rail 1b21 are both provided with locking bayonet, the locking bayonet located on the left compression spring locking guide rail 1b11 is locked with the left compression spring locking device 1b5 installed inside the left rotating hinge 1a2, and the locking bayonet located on the right compression spring locking guide rail 1b21 is locked with the right compression spring locking device 1b6 installed inside the right rotating hinge 1a3, at the same time, the inner edges of the left rotating hinge 1a2 and the right rotating hinge 1a3 are both provided with guide grooves, and the bottoms of the left sliding sheet 1b1 and the right sliding sheet 1b2 are provided with guide strips that slide with the guide grooves, and the guide grooves and the guide strips form a guiding mechanism that slides together.

[0045] Specifically, during the closing process of the outward folding mobile terminal: the left rotating hinge 1a2 and the right rotating hinge 1a3 rotate, the left sliding sheet 1b1 and the right sliding sheet 1b2 are connected to the guide grooves of the left rotating hinge 1a2 and the right rotating hinge 1a3 through the guide strips arranged at the bottom, and the left chain 1b3 and the right chain 1b4 are guided by the tension chain buckle module 1c and the left compression spring locking guide rail 1b11 and the right compression spring locking guide rail 1b21, so that the left chain 1b3 and the right chain 1b4 rotate and are respectively tightly attached to the left compression spring locking guide rail 1b11 and the right compression spring locking guide rail 1b21. At the same time, the left chain 1b3 and the right chain 1b4 will pull the left sliding piece 1b1 and the right sliding piece 1b2 toward the middle, so that the pulley seat of the left compression spring locking device 1b5 is separated from the locking bayonet of the left compression spring locking guide rail 1b11 under the action of the compression spring, and the pulley seat of the right compression spring locking device 1b6 is separated from the locking bayonet of the right compression spring locking guide rail 1b21 under the action of the compression spring. When the terminal shell is completely closed, the two tension chain buckle modules 1c are engaged with the bayonet in the compression spring locking guide rail, so that the left and right shells will not unfold under the action of their own gravity, and then the mobile terminal is locked when closed;

[0046] During the unfolding process of the outer folding terminal: the left rotating hinge 1a2 and the right rotating hinge 1a3 also rotate. Under the guidance of the tension chain buckle module 1c and the left compression spring locking guide rail 1b11 and the right compression spring locking guide rail 1b21, the left chain 1b3 and the right chain 1b4 rotate and unfold, and the left sliding piece 1b1 and the right sliding piece 1b2 slide relatively on the left rotating hinge 1a2 and the right rotating hinge 1a3. When the mobile terminal is fully unfolded, the pulley seat of the left compression spring locking device 1b5 is engaged with the locking bayonet of the left compression spring locking guide rail 1b11 under the action of the compression spring, and the pulley seat of the right compression spring locking device 1b6 is engaged with the locking bayonet of the right compression spring locking guide rail 1b21 under the action of the compression spring, thereby completing the locking of the mobile terminal when unfolded.

[0047] In this embodiment, the tension chain buckle module 1c includes a chain buckle seat 1c2, and the chain buckle 1c1 is slidably connected inside the chain buckle seat 1c2, and two sliding grooves are opened on both sides of the chain buckle seat 1c2, wherein a first sliding rod 1c3 inserted and connected with one end of the chain buckle 1c1 is slidably provided in the two sliding grooves relative to each other, and a second sliding rod 1c4 inserted and connected with the other end of the chain buckle 1c1 is slidably provided in the two sliding grooves relative to each other, and a tensioner 1c5 placed inside the chain buckle seat 1c2 is provided between the first sliding rod 1c3 and the second sliding rod 1c4, and one end of the tensioner 1c5 is in conflict with the inner protrusion of the chain buckle 1c1, one end of the chain buckle 1c1 is rotatably connected to the corresponding left chain 1b3 and one end of the right chain 1b4 through a pin, and one end of the chain buckle seat 1c2 is fixedly connected to the corresponding left rotating hinge 1a2 and the right rotating hinge 1a3 through a screw.

[0048] Specifically, during the closing and unfolding of the outward-folding mobile terminal: the left sliding sheet 1b1 and the right sliding sheet 1b2 rotate. At this time, under the rotation of the left chain 1b3 and the right chain 1b4, the first sliding bar 1c3 and the second sliding bar 1c4 of the chain buckle 1c1 slide in the sliding groove of the chain buckle seat 1c2 through the action of the tensioner 1c5, and the chain buckle seat 1c2 is guided to slide under the action of the compression spring locking guide rail, so that the internal space is fully utilized, and a tensioned chain is used to absorb the bending distance, compensate for processing tolerances, reduce manufacturing costs, and keep the flatness of the flexible screen 4.

[0049] It should be supplemented that the tensioner 1c5 can be a spring, a spring, an air cushion, an elastic polymer material, other elastic materials, etc., which can provide continuous tension.

[0050] In this embodiment, the connecting mechanism 1d includes a hinge connecting rod 1d3 installed with the middle sliding plate of the sliding plate 11, and sliding blocks 1d1 engaged with two limiters 1a14 are installed at both ends of the hinge connecting rod 1d3. The sliding rods on both sides of the sliding block 1d1 are respectively slidably connected with the hooks 1d2 on the surface of the left sliding back shell 12 and the right sliding back shell 13.

[0051] Specifically, during the closing process of the outward folding mobile terminal: the sliding sheet 11 composed of multiple sliding sheets is bent and folded under the cooperation of the synchronization mechanism 1a, the locking mechanism 1b and the tension chain buckle module 1c, and the flexible screen 4 is protected at a constant length. At the same time, the bent sliding sheet 11 causes the left sliding back shell 12 and the right sliding back shell 13 to rotate, and the hook 1d2 of the sliding back shell rotates with the sliding rods on both sides of the sliding block 1d1. When the outward folding terminal is completely closed, the sliding rod of the sliding block 1d1 is locked with the hook 1d2 to fix the position of the sliding back shell;

[0052] During the unfolding of the outward-folding mobile terminal: the unfolded sliding sheet 11 also provides constant length protection for the flexible screen 4. As the sliding sheet 11 unfolds, the left sliding back shell 12 and the right sliding back shell 13 also rotate. Similarly, the hook 1d2 of the sliding back shell rotates with the sliding rods on both sides of the sliding block 1d1. When the outward-folding terminal is fully unfolded, the left sliding back shell 12 and the right sliding back shell 13 shield the back of the left shell 2 and the right shell 3 to ensure the aesthetics of the mobile terminal when in use.

[0053] Furthermore, the left compression spring locking device 1b5 and the right compression spring locking device 1b6 both include a pulley seat and a compression spring elastically connected to the pulley seat. The pulley seat of the left compression spring locking device 1b5 and the pulley seat are both installed inside the left rotating hinge 1a2, and the pulley seat is locked with the locking bayonet on the left compression spring locking guide rail 1b11. The pulley seat of the right compression spring locking device 1b6 and the pulley seat are both installed inside the right rotating hinge 1a3, and the pulley seat is locked with the locking bayonet on the right compression spring locking guide rail 1b21. Through the locking cooperation between the pulley seat and the locking bayonet, the left compression spring locking device 1b5 and the right compression spring locking device 1b6 can be quickly locked with the left compression spring locking guide rail 1b11 and the right compression spring locking guide rail 1b21.

[0054] An outward-folding mobile terminal includes an outward-folding hinge as described in any one of the above items, and also includes a left shell 2 and a right shell 3 respectively installed on both sides of a sliding sheet 11 and constituting a terminal shell, and the left sliding sheet 1b1 and the right sliding sheet 1b2 are respectively fixedly connected to the left shell 2 and the right shell 3, so that the outward-folding hinge can be better adapted to a variety of mobile terminals.

[0055] Furthermore, support plates for supporting and installing the flexible screen 4 are installed on the top of the left shell 2 and the right shell 3, and the two support plates are arranged flush with the flexible board 111 to ensure that the mobile terminal smoothly supports the flexible screen 4 during the opening and closing process.

[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. An external folding hinge, comprising a hinge mechanism, characterized in that: The hinge mechanism comprises: Two synchronization mechanisms for the terminal housing to realize clockwise and counterclockwise synchronous rotation, wherein the synchronization mechanism is symmetrically provided with two rotating ends for rotational cooperation and for connecting the terminal housing and providing rotational tension to the flexible screen, and the synchronization mechanism is also provided with a synchronization gear buckle group for ensuring smooth rotation of the hinge, providing mechanical feedback, and driving the two rotating ends to rotate synchronously; Cooperating with the synchronization mechanism to realize the limit locking when the rotating end is fully unfolded and closed, and the locking mechanism to prevent the hinge from over-folding, and the rotating end of the synchronization mechanism is also provided with a guide mechanism that slidably cooperates with the locking mechanism and realizes the folding distance compensation; A tension chain buckle module that cooperates with the chain inside the locking mechanism and provides continuous tension to the flexible screen when the hinge rotates; A connecting mechanism used to connect two synchronization mechanisms and realize sliding cooperation between the left sliding back shell and the right sliding back shell located at the back of the hinge, so that when the terminal is fully unfolded, the terminal shell gap is shielded; and a sliding sheet arranged on the connection mechanism, combined with the flexible board to realize the installation of the flexible screen and keep the flexible screen at a constant length; The synchronization mechanism also includes a hinge fixing seat, which includes an arc-shaped plate, and a plurality of fixed seat shaft cores are arranged side by side on the surface of the arc-shaped plate. A left rotating hinge and a right rotating hinge are provided on both sides of the arc-shaped plate to form two rotating ends, wherein one side of the left rotating hinge is provided with a plurality of left rotating hinge shaft cores that rotate with the fixed seat shaft core and guide it to rotate and fully unfold and limit it, and one side of the right rotating hinge is provided with a plurality of rotating folding shaft cores that also rotate with the fixed seat shaft core and guide it to rotate and fully unfold and limit it. The surface of the hinge fixing seat is also provided with a tooth buckle cavity for installing a synchronous tooth buckle group, and the synchronous tooth buckle group includes two horizontally mounted inside the tooth buckle cavity A tooth buckle fixing seat, a left synchronous tooth buckle and a right synchronous tooth buckle with two end teeth meshing and rotating are rotatably installed between the two tooth buckle fixing seats, the sliding end of the left synchronous tooth buckle away from the tooth gap is slidably connected with the left synchronous tooth buckle guide rail set at the bottom of the left rotating hinge, and the sliding end of the right synchronous tooth buckle away from the tooth gap is slidably connected with the right synchronous tooth buckle guide rail set at the bottom of the right rotating hinge, and the interiors of the left synchronous tooth buckle guide rail and the right synchronous tooth buckle guide rail are slidably connected with the limiting sliding grooves opened at the sliding ends of the left synchronous tooth buckle and the right synchronous tooth buckle through the synchronous tooth buckle limiting rods set, one end of the hinge fixing seat is provided with a limiter for limiting the connecting mechanism, and the top of the hinge fixing seat is also provided with a hinge pressing plate; The locking mechanism also includes two symmetrically arranged left sliding plates and right sliding plates, the inner side of the left sliding plate is provided with a left compression spring locking guide rail, the inner side of the right sliding plate is provided with a right compression spring locking guide rail, and tension chain buckle modules are slidably installed inside the left compression spring locking guide rail and the right compression spring locking guide rail, the tension chain buckle module located in the left compression spring locking guide rail is rotatably connected to one side of the arc plate through a left chain, and the tension chain buckle module located in the right compression spring locking guide rail is rotatably connected to one side of the arc plate through a right chain; The tension chain buckle module comprises a chain buckle seat, a chain buckle is slidably connected inside the chain buckle seat, and two sliding grooves are provided on both sides of the chain buckle seat, wherein a first sliding rod inserted and connected with one end of the chain buckle is slidably provided in two sliding grooves at opposite positions, and a second sliding rod inserted and connected with the other end of the chain buckle is slidably provided in two sliding grooves at opposite positions, and a tensioner placed inside the chain buckle seat is provided between the first sliding rod and the second sliding rod, and one end of the tensioner is in conflict with the inner protrusion of the chain buckle, one end of the chain buckle is rotatably connected with one end of the corresponding left chain and right chain through a pin, and one end of the chain buckle seat is fixedly connected with the corresponding left rotating hinge and right rotating hinge through a screw; The tensioner is a spring, a spring, an air cushion or an elastic polymer material.

2. An external folding hinge according to claim 1, characterized in that: At the same time, one side of the left compression spring locking guide rail and the right compression spring locking guide rail are provided with locking snaps, the locking snaps on the left compression spring locking guide rail are locked and matched with the left compression spring locking device installed inside the left rotating hinge, and the locking snaps on the right compression spring locking guide rail are locked and matched with the right compression spring locking device installed inside the right rotating hinge. At the same time, the inner edges of the left rotating hinge and the right rotating hinge are provided with guide grooves, and the bottoms of the left sliding sheet and the right sliding sheet are provided with guide strips that slide with the guide grooves, and the guide grooves and the guide strips form a guiding mechanism that slides together.

3. An external folding hinge according to claim 2, characterized in that: The connecting mechanism includes a hinge connecting rod installed with the middle sliding plate of the sliding plate, and sliding blocks connected to two limiters are installed at both ends of the hinge connecting rod. The sliding rods on both sides of the sliding block are slidably connected with the hooks on the surfaces of the left sliding back shell and the right sliding back shell respectively.

4. The external folding hinge according to claim 3, characterized in that: The left compression spring locking device and the right compression spring locking device both include a pulley seat and a compression spring elastically connected to the pulley seat; the pulley seat of the left compression spring locking device and the pulley seat are both installed inside the left rotating hinge, and the pulley seat is locked with the locking bayonet on the left compression spring locking guide rail; the pulley seat of the right compression spring locking device and the pulley seat are both installed inside the right rotating hinge, and the pulley seat is locked with the locking bayonet on the right compression spring locking guide rail.

5. An outward folding mobile terminal, comprising an outward folding hinge according to any one of claims 1 to 4, characterized in that: It also includes a left shell and a right shell which are respectively installed on both sides of the sliding sheet and constitute the terminal shell, and the left sliding sheet and the right sliding sheet are respectively fixedly connected to the left shell and the right shell.

6. The outward folding mobile terminal according to claim 5, characterized in that: Support plates for supporting and installing the flexible screen are installed on the top of the left shell and the right shell, and the two support plates are arranged flush with the flexible plate.

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