CN213332027U

CN213332027U - Interior folding hinge and interior folding mobile device

Info

Publication number: CN213332027U
Application number: CN202020238655.3U
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: 2020-03-02
Filing date: 2020-03-02
Publication date: 2021-06-01
Anticipated expiration: 2030-03-02

Abstract

The utility model discloses an interior folding hinge and interior folding mobile device, including the hinge mechanism, the hinge mechanism includes: the lifting device comprises a middle shell, a left lifting plate and a right lifting plate, wherein the left lifting plate and the right lifting plate are respectively positioned on two sides of the middle shell; two synchronous mechanisms which are symmetrically arranged on the corresponding mounting positions and are positioned at two ends in the middle shell; a plurality of locking mechanisms for rotationally locking the left lifting plate and the right lifting plate and preventing the equipment shell from being folded and drooping; the support avoiding mechanisms and the sliding rail mechanisms are used for realizing that the hinge can support the screen when being opened and can avoid the space to bend the screen when being closed; the utility model provides a two synchronizing mechanism, a plurality of locking mechanical system, a plurality of support dodge the mounting means of mechanism and a plurality of slide rail mechanism all adopt the same structure and symmetry, greatly simplified the structure complexity of interior folding hinge, also ensured the stability of hinge when opening and shutting simultaneously, then the multiple mobile device of adaptation that can be better.

Description

Interior folding hinge and interior folding mobile device

Technical Field

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

Background

The flexible screen is a flexible screen and is referred to as a flexible OLED. The successful mass production of the flexible screen is not limited to the manufacture of a new generation of high-end smart phone, and the application of the wearable device is greatly influenced due to the characteristics of low power consumption and flexibility.

In the folding flexible screen mobile equipment, the folding hinge is a common accessory, but the traditional folding hinge structure has more and complex action mechanisms and lower stability in the rotating process, and meanwhile, when the folding hinge is applied to the mobile equipment, the space occupation ratio is large, and the traditional folding hinge is poorer in adaptability to different types of mobile equipment. Therefore, the research on the internal folding hinge which has the advantages of small space occupation ratio, simple and efficient action mechanism and good adaptability is significant.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an interior folding hinge and interior folding mobile device to solve the traditional interior folding hinge structure actuating mechanism who provides in the above-mentioned background art many and complicated, stability in the rotation process is lower, when being applied to the mobile device simultaneously, its space accounts for the rate big, and traditional interior folding hinge is to the also relatively poor problem of different types of mobile device suitability.

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

the lifting device comprises a middle shell, a left lifting plate and a right lifting plate, wherein the left lifting plate and the right lifting plate are respectively positioned on two sides of the middle shell;

the two synchronizing mechanisms are symmetrically arranged on the corresponding mounting positions and located at two ends inside the middle shell, and bevel gear sets which ensure smooth rotation of the hinges and are meshed with each other are arranged inside the synchronizing mechanisms;

the locking mechanisms are used for rotationally locking the left lifting plate and the right lifting plate and preventing the equipment shell from being folded and drooping, wherein the locking mechanisms comprise two elastic parts which are symmetrically arranged and matched with the lifting plates, and the locking mechanisms are also arranged on corresponding mounting positions;

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

and the sliding rail mechanisms are provided with a left supporting plate and a right supporting plate which are used for sliding, the screen is always in a tightening state in the process of opening and closing the hinge, the screen is prevented from bulging and clings to the sliding parts on the surfaces of the supporting plates, and the left supporting plate and the right supporting plate are respectively positioned on one side of the left lifting plate and one side of the right lifting plate and are flush with the left lifting plate and the right lifting plate.

As a preferred technical proposal of the utility model, the synchronizing mechanism also comprises a supporting seat arranged inside the middle shell, an arc-shaped opening matched with the middle part of the double-head bevel gear is arranged inside one end of the supporting seat, the left gear rod and the right gear rod are positioned in arc-shaped grooves at the two sides inside the supporting seat, and the ends of the left gear rod and the right gear rod, which are far away from the bevel gear, are fixedly provided with notch joints, T-shaped connecting pieces are inserted and connected in the linear notches of the notch joints, one ends of the T-shaped connecting pieces are sleeved with raised heads arranged at one ends of the corresponding left connecting arm and the right connecting arm through the arranged openings, the notch joint, the T-shaped connecting piece and the raised head form a connecting mechanism of the synchronous mechanism, the top of the supporting seat is covered and connected with a cover body, and the bottom of the cover body is also provided with a corresponding arc-shaped opening and an arc-shaped groove, and the two sides of the cover body are fixedly connected with the middle shell through the lug pieces with holes which are arranged and the lock pin matched with the lug pieces.

As a preferred technical scheme of the utility model, locking mechanical system includes two parallel arrangement and is located the club of middle casing internal portion lock intracavity, and the one end of every club all cup joints the reset spring A who arranges the lock intracavity in and form elasticity portion, and the both sides of middle casing all are provided with the trompil that is used for the club bulb to pass, and the bulb of club and left lifter plate and the inboard lifter plate inclined plane that corresponds the setting of right lifter plate are inconsistent.

As a preferred technical scheme of the utility model, support and dodge the mechanism and include and correspond left lifter plate and right lifter plate outside fixed connection's U type connecting plate, U type connecting plate rotates with the one end of connecting rod through the round pin axle and is connected, the other end interlude of connecting rod is connected with the sliding shaft, the both ends of sliding shaft respectively with the spout sliding connection that two linking arm middle parts set up, the one end and the spring holder fixed connection of linking arm, the inside interlude of spring holder is connected with the ejector pin inconsistent with the sliding shaft, and the outside of ejector pin has still cup jointed the reset spring B who arranges the spring holder inside and make the ejector pin carry out the reseing in, wherein four support and dodge the U type connecting plate of mechanism and still carry out four linking arm fixed connection with two.

As a preferred technical scheme of the utility model, slide rail mechanism includes two relative settings and is used for installing the slide of fagging, and wherein the interlude is connected with the slide bar in the trompil at slide middle part, and first T type seat and second T type seat have been cup jointed respectively at the both ends of slide bar, and is equipped with the cover between first T type seat and the slide and locates the slide bar outside to make the slide reset spring C that can slide and reset.

As a preferred technical scheme of the utility model, a plurality of connecting seats are still installed to the inside of middle casing, and the both sides arch of connecting seat alternates with the inboard U type mouth of left lifter plate and right lifter plate respectively through the pin to be connected.

As a preferred technical scheme of the utility model, the middle part fagging is installed at the top of middle casing, and middle part fagging flushes the setting with left lifter plate and right lifter plate.

The utility model provides an interior folding mobile device, includes above-mentioned arbitrary one interior folding hinge, still includes the left casing and the right casing of constituteing the equipment casing, left casing and right casing are located the both sides of middle casing respectively, and the inboard both ends of left casing and right casing rotate with left linking arm and right linking arm respectively and be connected.

As an optimal technical scheme of the utility model, it is a plurality of spring holder, first T type seat and second T type seat are respectively with the inboard fixed connection of left casing and the right casing that corresponds.

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

1) the hinge mechanism ensures that the left and right shells can synchronously rotate in the opening and closing processes of the mobile equipment through the synchronous mechanisms symmetrically arranged at the two ends of the middle shell, the synchronous mechanisms are meshed and connected with the bevel gear through the gear rod to form a bevel gear set capable of efficiently rotating, and the connecting arm is fixedly installed with the equipment shell, so that the hinge can drive the equipment shell to synchronously rotate clockwise and anticlockwise, meanwhile, the smoothness of the rotation of the hinge is also ensured, and a user has better mechanical feedback feeling when using the inward-folding mobile equipment; the ball rod of the locking mechanism is in running fit with the inclined plane of the lifting plate under the elastic 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 equipment during full opening and closing is realized, and the equipment shell is prevented from sagging or over-folding under the action of natural gravity; the hinge can support the screen when being opened and can avoid the space to bend the screen when being closed through the support avoiding mechanism; slide through slide rail mechanism under reset spring's effect with slide bar sliding fit, install left and right fagging on the slide and get the hinge at the hinge and open and closed in-process, make the screen be in the state of tightening always, prevent 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, improve equipment's life.

2) Two synchronizing mechanism, a plurality of locking mechanical system, a plurality of support among this interior folding hinge dodge mechanism and a plurality of slide rail mechanism all adopt the mounting means of the same structure and symmetry, have greatly simplified interior folding hinge's structural complexity, have also ensured the stability when opening and shutting of hinge simultaneously, then multiple mobile device 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 internal structure of the present invention;

FIG. 3 is a schematic view of the internal structure of the middle housing of the present invention;

fig. 4 is an enlarged schematic view of fig. 3 at a in accordance with the present invention;

fig. 5 is an enlarged schematic view of fig. 3 at B according to the present invention;

fig. 6 is a schematic view of a partial structure of the present invention;

fig. 7 is an enlarged schematic view of fig. 6 at C according to the present invention;

fig. 8 is a schematic diagram of the detachment of the synchronization mechanism of the present invention;

fig. 9 is a schematic structural view of the support avoiding mechanism of the present invention;

fig. 10 is a schematic view of the support avoiding mechanism according to the present invention;

fig. 11 is a schematic structural view of the slide rail mechanism of the present invention;

fig. 12 is a schematic view of the slide rail mechanism according to the present invention;

fig. 13 is a schematic diagram of the structure of the right elevating plate of the present invention.

In the figure: 1. a hinge mechanism; 11. a middle housing; 111. a middle supporting plate; 12. a left lifter plate; 13. a right lifter plate; 1a, a synchronizing mechanism; 1a1, a supporting seat; 1a2, double-ended bevel gear; 1a3, left gear lever; 1a4, right gear lever; 1a5, notch connector; 1a6, T-connector; 1a7, nose; 1a8, left connecting arm; 1a9, right connecting arm; 1a10, locking pin; 1a11, a cover; 1b, a locking mechanism; 1b1, cue; 1b2, return spring A; 1b3, lifter plate ramp; 1c, supporting and avoiding mechanisms; 1c1, a U-shaped connecting plate; 1c2, spring seats; 1c3, return spring B; 1c4, a top bar; 1c5, connecting arm; 1c6, sliding shaft; 1c7, connecting rod; 1d, a sliding rail mechanism; 1d1, a first T-shaped seat; 1d2, a second T-shaped seat; 1d3, a slide bar; 1d4, return spring C; 1d5, a slider; 1e, a connecting seat; 2. a left housing; 21. a left supporting plate; 3. a right housing; 31. and a right supporting 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. 1-13, the present invention provides an internal folding hinge, which includes a hinge mechanism 1, the hinge mechanism 1 includes:

the lifting device comprises a middle shell 11, a left lifting plate 12 and a right lifting plate 13 which are respectively positioned at two sides of the middle shell 11, wherein a plurality of mounting positions are arranged inside the middle shell 11;

the two synchronizing mechanisms 1a are symmetrically arranged on corresponding mounting positions and located at two ends inside the middle shell 11, bevel gear sets which ensure that a hinge rotates smoothly and are meshed with each other are arranged inside the synchronizing mechanisms 1a, each bevel gear set comprises a double-head bevel gear 1a2, two sides of a double-head bevel gear 1a2 are meshed with a left gear rod 1a3 and a right gear rod 1a4, the ends of the left gear rod 1a3 and one end of the right gear rod 1a4 are respectively connected with a left connecting arm 1a8 and a right connecting arm 1a9 which are used for driving the equipment shell to rotate synchronously through a connecting mechanism;

a plurality of locking mechanisms 1b which are used for rotationally locking the left lifting plate 12 and the right lifting plate 13 and preventing the equipment shell from being folded and drooping, wherein the locking mechanisms comprise two elastic parts which are symmetrically arranged and matched with the lifting plates, and the locking mechanisms 1b are also arranged on corresponding installation positions;

a plurality of support avoiding mechanisms 1c 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 a plurality of slide rail mechanism 1d, wherein slide rail mechanism 1d is provided with and is used for left fagging 21 and right fagging 31 to slide to make the screen open with the closed in-process at the hinge, the screen is in the state of tightening always, prevents the screen uplift, and hugs closely the sliding part on fagging surface, left fagging 21 and right fagging 31 are located one side of left lifter plate 12 and right lifter plate 13 respectively, and flush the setting with left lifter plate 12 and right lifter plate 13.

In this embodiment, the synchronizing mechanism 1a further includes a supporting seat 1a1 installed inside the middle housing 11, an arc opening matched with the middle of the double-headed bevel gear 1a2 is provided inside one end of the supporting seat 1a1, the left gear rod 1a3 and the right gear rod 1a4 are located in arc grooves on both sides inside the supporting seat 1a1, and the ends of the left gear rod 1a3 and the right gear rod 1a4 away from the bevel gear are both fixedly provided with a notch connector 1a5, a T-shaped connector 1a6 is inserted and connected in a straight notch of the notch connector 1a5, one end of the T-shaped connector 1a6 is sleeved with a notch 1a7 provided at one end of the corresponding left connecting arm 1a8 and the right connecting arm 1a9 through an opening, and the notch connector 1a5, the T-shaped connector 1a6 and the nose 1a7 form a 39a connecting mechanism of the synchronizing mechanism 1a, the top of the supporting seat 1a1 is covered and connected with an arc opening 11, and the bottom of the nose 11 and the arc cover 11 are also provided at the bottom, the both sides of lid 1a11 are through foraminiferous ear piece cooperation lockpin 1a10 and middle casing 11 fixed connection who is equipped with, lid 1a11 is pegged graft fixedly with middle casing 11 through lockpin 1a10, make things convenient for the dismouting of lid 1a11, lid 1a11 closes the back with supporting seat 1a1 lid simultaneously, its two just can be spacing left gear pole 1a3 and right gear pole 1a4 respectively to the arc groove that sets up, lid 1a11 closes the back with supporting seat 1a1 lid simultaneously, just can be spacing double-end conical gear 1a2 to the arc mouth that sets up.

Specifically, in the process of closing the fold-in mobile device: the left shell 2 moves clockwise to drive the left connecting arm 1a8 to move clockwise, the clockwise rotating left connecting arm 1a8 is matched with the T-shaped connecting piece 1a6 through the raised head 1a7 at one end thereof and is in running fit with the notch joint 1a5 of the left gear rod 1a3, and the left gear rod 1a3 is made to rotate clockwise, the clockwise rotating left gear rod 1a3 is driven through the double-head conical gear 1a2 to drive the right gear rod 1a4 to rotate anticlockwise, meanwhile, the anticlockwise rotating right gear rod 1a4 is matched with the T-shaped connecting piece 1a6 through the notch joint 1a5 at one end thereof and is in running fit with the raised head 1a7 at one end of the right connecting arm 1a9, and finally, the anticlockwise rotating right connecting arm 1a9 drives the right shell 3 to rotate anticlockwise, so that synchronous closing movement between the left shell and the right shell is realized;

in the unfolding process of the fold-in mobile device: the left shell 2 moves anticlockwise, the left connecting arm 1a8 is driven to move anticlockwise similarly, and the left connecting arm 1a8 rotating anticlockwise drives the left gear rod 1a3 to move anticlockwise under the action of the connecting mechanism; the left gear rod 1a3 drives the right gear rod 1a4 to move clockwise under the action of bevel gears in the bevel gear set, and the clockwise rotating right gear rod 1a4 drives the right shell 3 to rotate clockwise through the connecting mechanism and the right connecting arm 1a9, so that synchronous unfolding motion between the left shell and the right shell is realized.

In this embodiment, the locking mechanism 1b includes two parallel clubs 1b1 located in the lock cavity inside the middle housing 11, and one end of each club 1b1 is sleeved with a return spring A1b2 that is placed in the lock cavity and forms an elastic part, two sides of the middle housing 11 are provided with openings for the ball head of the club 1b1 to pass through, and the ball head of the club 1b1 abuts against the inclined surfaces 1b3 of the lifting plates correspondingly arranged inside the left lifting plate 12 and the right lifting plate 13.

Specifically, in the process of closing the fold-in mobile device: 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 the resultant force provided by the return spring A1b2, and the outer side of the lifting plate generates an inward resultant force after the central conversion (namely the lever principle) by the lifting plate inclined plane 1b3, so that the lifting plate can realize automatic closing and locking and simultaneously prevent the hinge from loosening;

in the unfolding process of the fold-in mobile device: when the left lifting plate 12 and the right lifting plate 13 rotate until the spherical surface of the ball rod 1b1 contacts with the lifting plate inclined surface 1b3, the lifting plate inclined surface 1b3 receives the force resultant force provided by the return spring A1b2 of the vertical inclined surface, and the outer side of the lifting plate generates downward resultant force through the conversion (namely the lever principle) by the center of the lifting plate inclined surface 1b3, so that the lifting plate can realize automatic opening and locking and simultaneously prevent the rotating shaft from loosening.

In this embodiment, the support avoiding mechanism 1c includes a U-shaped connecting plate 1c1 fixedly connected to the outer sides of the corresponding left lifting plate 12 and right lifting plate 13, the U-shaped connecting plate 1c1 is rotatably connected to one end of a connecting rod 1c7 through a pin, the other end of the connecting rod 1c7 is connected to a sliding shaft 16 in an inserting manner, two ends of the sliding shaft 1c6 are respectively connected to sliding grooves formed in the middle portions of two connecting arms 1c5 in a sliding manner, one end of the connecting arm 1c5 is fixedly connected to a spring seat 1c2, a push rod 1c4 abutting against the sliding shaft 1c6 is connected in the spring seat 1c2 in an inserting manner, a return spring B1c3 disposed in the spring seat 1c2 and used for returning the push rod 1c4 is further sleeved outside the push rod 1c4, the U-shaped connecting plates 1c1 of the four support avoiding mechanisms 1c are further fixedly connected to four connecting arms of the two synchronizing mechanisms 1a through screws, and the connecting, When the right shell rotates, the four support avoiding mechanisms 1c are driven to synchronously rotate in the same way.

Specifically, the method comprises the following steps: during the closing process of the fold-in mobile device: 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 1c7 to rotate to sink, the sliding shaft 1c6 slides in the sliding groove of the connecting arm 1c5, and the push rod 1c4 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 unfolding process of the fold-in mobile device: 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 1c7 to rotate and ascend, the sliding shaft 1c6 slides in the sliding groove of the connecting arm 1c5, and the reset spring B1c3 pushes the ejector rod 1c4 to move towards the middle; the top rod 1c4 pushes the connecting rod 1c7 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 1d includes two slide bases 1d5 which are oppositely disposed and used for mounting a supporting plate, wherein a sliding rod 1d3 is inserted into an opening in the middle of the slide base 1d5, two ends of the sliding rod 1d3 are respectively sleeved with a first T-shaped base 1d1 and a second T-shaped base 1d2, and a return spring C1d4 which is sleeved outside the sliding rod 1d3 and enables the slide base 1d5 to be slidably returned is disposed between the first T-shaped base 1d1 and the slide base 1d 5.

Specifically, in the process of closing the fold-in mobile device: the screens arranged at the inner sides of the left supporting plate 21 and the right supporting plate 31 are bent and hidden in the avoiding area of the lifting plate, and the two sliding seats 1d5 slide outwards under the guiding action of the corresponding two sliding rods 1d3, so that the left supporting plate 21 and the right supporting plate 31 move outwards to tighten the screens and prevent the screens from bulging;

in the unfolding process of the fold-in mobile device: the left lifting plate 12 and the right lifting plate 13 lift up to support the screen, the screen pulls the left supporting plate 21 and the right supporting plate 31 at the two sides towards the middle, and the two sliding seats 1d5 compress the return spring C1d4, so that the screen is in a tight state, and the screen is prevented from bulging.

Further, a plurality of connecting seats 1e are still installed to middle casing 11's inside, and the both sides arch of connecting seat 1e is passed through the pin and is connected with the inboard U type mouth interlude of left lifter plate 12 and right lifter plate 13 respectively, and middle casing 11 is through installing a plurality of connecting seats 1e on the middle part corresponds the installation position to the cooperation pin is realized rotating with left lifter plate 12 and right lifter plate 13, and when preventing that the hinge from rotating, left lifter plate 12 and right lifter plate 13 take place to drop with middle casing 11.

Further, middle part fagging 111 is installed at the top of middle casing 11, and middle part fagging 111 flushes the setting with left lifter plate 12 and right lifter plate 13, ensures that flexible display screen can carry out level and smooth support in removing the infolding equipment inboard, reduces the stress that the hinge produced the screen when rotating, improves flexible display screen's life.

An interior folding mobile device, includes any one of above-mentioned an interior folding hinge, still including the left casing 2 and the right casing 3 that constitute the equipment casing, left casing 2 and right casing 3 are located the both sides of middle casing 11 respectively, and the inboard both ends of left casing 2 and right casing 3 rotate with left linking arm 1a8 and right linking arm 1a9 respectively and are connected, ensure that left casing 2 and right casing 3 realize clockwise and anticlockwise synchronous rotation through the linking arm of lazytongs 1 a.

Further, a plurality of spring seats 1c2, first T-shaped seat 1d1 and second T-shaped seat 1d2 are respectively with the inboard fixed connection of left casing 2 and right casing 3 that correspond, ensure to dodge mechanism 1c through supporting and make the hinge can support the screen when opening and can dodge the space and give the screen bend when closed, ensure to make the screen open and closed in-process through slide rail mechanism 1d at the hinge, the screen is in the state of tightening always, prevents the screen uplift, and hug closely in fagging surface.

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 a hinge mechanism, characterized in that it comprises:

and the sliding rail mechanisms are provided with a left supporting plate and a right supporting plate which are used for sliding, the screen is always in a tightening state in the process of opening and closing the hinge, the screen is prevented from bulging, the sliding part is tightly attached to the surface of the supporting plate, and the left supporting plate and the right supporting plate are respectively positioned on one side of the left lifting plate and one side of the right lifting plate and are flush with the left lifting plate and the right lifting plate.

2. An internal folding hinge according to claim 1, characterized in that: the synchronous mechanism further comprises a supporting seat installed inside the middle shell, an arc-shaped opening matched with the middle of the double-head bevel gear is formed in one end of the supporting seat, the left gear rod and the right gear rod are located on arc-shaped grooves in two sides inside the supporting seat, one end, far away from the bevel gear, of each of the left gear rod and the right gear rod is fixedly provided with a notch connector, a T-shaped connecting piece is connected into a straight notch of each notch connector in an inserting mode, one end of each T-shaped connecting piece is connected with a protruding head corresponding to one end of the left connecting arm and one end of the right connecting arm in a sleeved mode through a set opening, the connecting mechanism of the synchronous mechanism is formed by the notch connectors, the T-shaped connecting pieces and the protruding heads, the top of the supporting seat is connected with a cover body in a covering mode, corresponding arc-shaped openings and corresponding arc-shaped grooves are also.

3. An internal folding hinge according to claim 2, characterized in that: the locking mechanism comprises two ball rods which are arranged in parallel and located in a lock cavity in the middle of the shell, a reset spring A which is arranged in the lock cavity and forms an elastic part is sleeved at one end of each ball rod, holes for ball heads of the ball rods to penetrate through are formed in two sides of the middle shell, and the ball heads of the ball rods are abutted to inclined planes of lifting plates which are correspondingly arranged on the inner sides of the left lifting plate and the right lifting plate.

4. An internal folding hinge according to claim 3, characterized in that: the mechanism includes and corresponds left lifter plate and right lifter plate outside fixed connection's U type connecting plate is dodged in the support, U type connecting plate rotates through the one end of round pin axle with the connecting rod to be connected, the other end interlude of connecting rod is connected with the sliding shaft, the both ends of sliding shaft respectively with the spout sliding connection that two linking arm middle parts set up, the one end and the spring holder fixed connection of linking arm, the inside interlude of spring holder is connected with the ejector pin inconsistent with the sliding shaft, and the outside of ejector pin still cup joints the reset spring B who arranges the spring holder inside and make the ejector pin reset in, wherein four supports the U type connecting plate of dodging the mechanism and still with four linking arm fixed connection of two lazytongs through the.

5. An internal folding hinge according to claim 4, characterized in that: the slide rail mechanism comprises two slide seats which are oppositely arranged and used for installing supporting plates, wherein a slide rod is inserted and connected in a hole in the middle of each slide seat, a first T-shaped seat and a second T-shaped seat are respectively sleeved at two ends of the slide rod, a sleeve is arranged between the first T-shaped seat and the slide seats, the outer portions of the slide rods are located, and a reset spring C which enables the slide seats to be reset in a sliding mode is arranged.

6. An internal folding hinge according to claim 5, characterized in that: a plurality of connecting seats are further mounted inside the middle shell, and protrusions on two sides of the connecting seats are respectively and alternately connected with the inner side U-shaped openings of the left lifting plate and the inner side U-shaped openings of the right lifting plate through pins.

7. An internal folding hinge according to claim 6, characterized in that: the middle supporting plate is installed at the top of the middle shell and is flush with the left lifting plate and the right lifting plate.

8. An inner folding mobile device, comprising the inner folding hinge of any one of claims 1 to 7, further comprising a left housing and a right housing constituting a device housing, wherein the left housing and the right housing are respectively located at two sides of the middle housing, and two ends of the inner side of the left housing and the right housing are respectively rotatably connected with the left connecting arm and the right connecting arm, and the plurality of spring seats, the first T-shaped seat and the second T-shaped seat are respectively fixedly connected with the inner sides of the corresponding left housing and the right housing.