Inward folding hinge and inward folding mobile device

Abstract

The present invention discloses an inner folding hinge and an inner folding mobile device, including a hinge mechanism, which includes: an intermediate shell and a left lifting plate and a right lifting plate respectively located on both sides of the intermediate shell; two synchronization mechanisms symmetrically arranged and installed on corresponding installation positions and located at two ends inside the intermediate shell; a plurality of locking mechanisms used for rotationally locking the left lifting plate and the right lifting plate and preventing the device shell from over-folding and sagging; a plurality of supporting and avoiding mechanisms and a plurality of slide rail mechanisms used to enable the hinge to support a screen when opened and to avoid space for the screen to bend when closed; the two synchronization mechanisms, the plurality of locking mechanisms, the plurality of supporting and avoiding mechanisms and the plurality of slide rail mechanisms in the present invention all adopt the same structure and a symmetrical installation method, which greatly simplifies the structural complexity of the inner folding hinge, and also ensures the stability of the hinge when opening and closing, so that it can better adapt to a variety of mobile devices.

Description

Technical Field

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

[0002] Flexible screen is a kind of flexible screen, which refers to flexible OLED. The successful mass production of flexible screen is not only limited to the manufacturing of the new generation of high-end smartphones, but also has a profound impact on the application of wearable devices due to its low power consumption and bendable characteristics.

[0003] In mobile devices with inward-folding flexible screens, inward-folding hinges are common accessories. However, the traditional inward-folding hinge structure has many and complex action mechanisms, and has low stability during rotation. At the same time, when applied to mobile devices, its space occupancy rate is large, and the traditional inward-folding hinge is also poorly adaptable to different types of mobile devices. Therefore, it is of great significance to study an inward-folding hinge with a small space occupancy rate, simple and efficient action mechanism, and good adaptability. Summary of the invention

[0004] The purpose of the present invention is to provide an inward folding hinge and an inward folding mobile device to solve the problems proposed in the above background technology that the traditional inward folding hinge structure has multiple and complex action mechanisms, has low stability during rotation, and when applied to mobile devices, it occupies a large space ratio, and the traditional inward folding hinge has poor adaptability to different types of mobile devices.

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

[0006] An intermediate shell and a left lifting plate and a right lifting plate respectively located on both sides of the intermediate shell, wherein a plurality of installation positions are provided inside the intermediate shell;

[0007] Two symmetrically arranged synchronous mechanisms are installed on corresponding installation positions and are located at both ends of the interior of the intermediate housing, and a bevel gear set is arranged inside the synchronous mechanism to ensure smooth rotation of the hinge and mutual meshing, wherein the bevel gear set includes a double-headed bevel gear, and the two sides of the double-headed bevel gear are meshedly connected with a left gear rod and a right gear rod with bevel teeth at the end, and one end of the left gear rod and the right gear rod are respectively connected to a left connecting arm and a right connecting arm for driving the device housing to rotate synchronously through a connecting mechanism;

[0008] A plurality of locking mechanisms for rotating and locking the left and right lifting plates and preventing the device housing from being over-folded and drooped, wherein the locking mechanisms include two symmetrically arranged elastic parts that cooperate with the lifting plates, and the locking mechanisms are also installed at corresponding installation positions;

[0009] A plurality of support and avoidance mechanisms are installed corresponding to the left lifting plate and the right lifting plate, and are used to realize that the hinge can support the screen when it is opened and can avoid space for the screen to bend when it is closed;

[0010] And multiple slide rail mechanisms, wherein the slide rail mechanisms are provided for the left support plate and the right support plate to slide, and the screen is kept in a taut state during the opening and closing of the hinge to prevent the screen from bulging, and the sliding part is closely attached to the surface of the support plate, the left support plate and the right support plate are respectively located on one side of the left lifting plate and the right lifting plate, and are arranged flush with the left lifting plate and the right lifting plate.

[0011] As a preferred technical solution of the present invention, the synchronization mechanism also includes a support seat installed inside the intermediate shell body, and an arc-shaped opening that matches the middle part of the double-headed bevel gear is arranged inside one end of the support seat, and the left gear rod and the right gear rod are located in the arc-shaped grooves on both sides of the support seat, and the left gear rod and the right gear rod are fixedly provided with a notch joint at one end away from the bevel gear, and a T-shaped connector is inserted and connected in the I-shaped notch of the notch joint, and one end of the T-shaped connector is sleeved with the corresponding convex head arranged at one end of the left connecting arm and the right connecting arm through the set opening, and the notch joint, the T-shaped connector and the convex head constitute the connecting mechanism of the synchronization mechanism, and the top of the support seat is covered and connected with a cover body, and the bottom of the cover body is also provided with corresponding arc-shaped openings and arc-shaped grooves, and the two sides of the cover body are fixedly connected to the intermediate shell body through the provided perforated ear pieces and locking pins.

[0012] As a preferred technical solution of the present invention, the locking mechanism includes two ball rods arranged in parallel and located in the locking cavity inside the intermediate shell, and one end of each ball rod is sleeved with a return spring A placed in the locking cavity and forming an elastic part, and openings for the ball heads of the ball rods to pass through are provided on both sides of the intermediate shell, and the ball heads of the ball rods are in conflict with the corresponding lifting plate inclined surfaces arranged on the inner sides of the left lifting plate and the right lifting plate.

[0013] As a preferred technical solution of the present invention, the support and avoidance mechanism includes a U-shaped connecting plate fixedly connected to the outer sides of the corresponding left lifting plate and the right lifting plate, the U-shaped connecting plate is rotatably connected to one end of the connecting rod through a pin shaft, the other end of the connecting rod is interspersed with a sliding shaft, the two ends of the sliding shaft are respectively slidably connected to the sliding grooves set in the middle of the two connecting arms, one end of the connecting arm is fixedly connected to the spring seat, the interior of the spring seat is interspersed with a push rod that contacts the sliding shaft, and the outside of the push rod is also sleeved with a reset spring B placed in the spring seat and causing the push rod to reset, wherein the four U-shaped connecting plates of the support and avoidance mechanism are also fixedly connected to the four connecting arms of the two synchronization mechanisms by screws.

[0014] As a preferred technical solution of the present invention, the slide rail mechanism includes two slide seats which are arranged opposite to each other and used to install the support plate, wherein a slide rod is inserted into the opening in the middle of the slide seat, and a first T-shaped seat and a second T-shaped seat are respectively sleeved on both ends of the slide rod, and a reset spring C is sleeved on the outside of the slide rod and allows the slide seat to slide and reset.

[0015] As a preferred technical solution of the present invention, a plurality of connection seats are further installed inside the intermediate shell, and the protrusions on both sides of the connection seats are respectively connected with the inner U-shaped openings of the left lifting plate and the right lifting plate through pins.

[0016] As a preferred technical solution of the present invention, a middle support plate is installed on the top of the intermediate shell, and the middle support plate is arranged flush with the left lifting plate and the right lifting plate.

[0017] An inward folding mobile device comprises an inward folding hinge as described in any one of the above items, and also comprises a left shell and a right shell constituting a device shell, wherein the left shell and the right shell are respectively located on both sides of a middle shell, and the inner ends of the left shell and the right shell are respectively rotatably connected to a left connecting arm and a right connecting arm.

[0018] As a preferred technical solution of the present invention, the plurality of spring seats, the first T-shaped seats and the second T-shaped seats are fixedly connected to the inner sides of the corresponding left shell and right shell respectively.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1) The hinge mechanism ensures that the left and right shells of the mobile device can rotate synchronously during the opening and closing process through the synchronization mechanism symmetrically arranged at both ends of the intermediate shell. The gear rod and the bevel gear are meshed and connected in the synchronization mechanism to form an efficient rotating bevel gear set, and the connecting arm is used to install and fix the device shell, so that the hinge can drive the device shell to rotate clockwise and counterclockwise synchronously, while ensuring the smoothness of the hinge rotation, and allowing users to have a better mechanical feedback when using this kind of inward folding mobile device; the ball rod of the locking mechanism is used to rotate and cooperate with the inclined surface of the lifting plate under the elastic action of the reset spring, The lever principle is used to make the hinge open and close automatically after force is applied, and the device is locked when fully opened and closed to prevent the device housing from sagging or over-folding under the action of natural gravity; the support and avoidance mechanism is used to enable the hinge to support the screen when open and to avoid space for the screen to bend when closed; the slide seat of the slide rail mechanism slides with the slide rod under the action of the return spring, and the left and right support plates installed on the slide seat keep the screen in a taut state during the opening and closing process of the hinge, preventing the screen from bulging and keeping it close to its surface, cooperating with the screen support and avoidance mechanism to prevent the hinge from rotating to damage the flexible display screen, thereby increasing the service life of the device.

[0021] 2) The two synchronization mechanisms, multiple locking mechanisms, multiple support and avoidance mechanisms, and multiple slide rail mechanisms in the inner folding hinge all adopt the same structure and symmetrical installation method, which greatly simplifies the structural complexity of the inner folding hinge, while also ensuring the stability of the hinge when opening and closing, so that it can better adapt to a variety of mobile devices (mobile phones, laptops, tablets, etc.). BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0024] Figure 3 It is a schematic diagram of the internal structure of the intermediate housing of the present invention;

[0025] Figure 4 For the present invention Figure 3 An enlarged schematic diagram at A;

[0026] Figure 5 For the present invention Figure 3 An enlarged schematic diagram at position B;

[0027] Figure 6 It is a schematic diagram of the local structure of the present invention;

[0028] Figure 7 For the present invention Figure 6 An enlarged schematic diagram at position C;

[0029] Figure 8 It is a schematic diagram of the disassembly of the synchronization mechanism of the present invention;

[0030] Fig. 9 It is a structural schematic diagram of the support avoidance mechanism of the present invention;

[0031] Fig.10 It is a schematic diagram of the support avoidance mechanism of the present invention;

[0032] Fig.11 It is a schematic diagram of the structure of the slide rail mechanism of the present invention;

[0033] Fig.12 It is a schematic diagram of the disassembly of the slide rail mechanism of the present invention;

[0034] Fig.13 It is a schematic diagram of the structure of the right lifting plate of the present invention.

[0035] In the figure: 1, hinge mechanism; 11, intermediate housing; 111, middle support plate; 12, left lifting plate; 13, right lifting plate; 1a, synchronization mechanism; 1a1, support seat; 1a2, double-headed bevel gear; 1a3, left gear rod; 1a4, right gear rod; 1a5, notch joint; 1a6, T-type connector; 1a7, convex head; 1a8, left connecting arm; 1a9, right connecting arm; 1a10, locking pin; 1a11, cover body; 1b, locking mechanism; 1b1, ball rod; 1b2, complex Position spring A; 1b3, lifting plate inclined surface; 1c, support avoidance mechanism; 1c1, U-shaped connecting plate; 1c2, spring seat; 1c3, reset spring B; 1c4, push rod; 1c5, connecting arm; 1c6, sliding shaft; 1c7, connecting rod; 1d, slide rail mechanism; 1d1, first T-shaped seat; 1d2, second T-shaped seat; 1d3, sliding rod; 1d4, reset spring C; 1d5, sliding seat; 1e, connecting seat; 2, left shell; 21, left support plate; 3, right shell; 31, right support plate. DETAILED DESCRIPTION

[0036] 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.

[0037] Example 1

[0038] See also Figure 1-13 The present invention provides an inner folding hinge, including a hinge mechanism 1, wherein the hinge mechanism 1 includes:

[0039] An intermediate housing 11 and a left lifting plate 12 and a right lifting plate 13 respectively located on both sides of the intermediate housing 11, wherein a plurality of installation positions are provided inside the intermediate housing 11;

[0040] Two symmetrically arranged synchronous mechanisms 1a are installed on corresponding installation positions and are located at both ends of the interior of the intermediate housing 11, and a bevel gear set is arranged inside the synchronous mechanism 1a to ensure smooth rotation of the hinge and mutual meshing, wherein the bevel gear set includes a double-headed bevel gear 1a2, and the two sides of the double-headed bevel gear 1a2 are meshedly connected with a left gear rod 1a3 and a right gear rod 1a4 with bevel teeth at the ends, and one end of the left gear rod 1a3 and the right gear rod 1a4 are respectively connected to a left connecting arm 1a8 and a right connecting arm 1a9 for driving the device housing to rotate synchronously through a connecting mechanism;

[0041] A plurality of locking mechanisms 1b for rotationally locking the left lifting plate 12 and the right lifting plate 13 and preventing the device housing from being over-folded and drooped, wherein the locking mechanism comprises two elastic parts symmetrically arranged and cooperating with the lifting plates, and the locking mechanism 1b is also installed at the corresponding installation position;

[0042] A plurality of support and avoidance mechanisms 1c are installed corresponding to the left lifting plate 12 and the right lifting plate 13, and are used to realize that the hinge can support the screen when it is opened and can avoid space for the screen to bend when it is closed;

[0043] And multiple slide rail mechanisms 1d, wherein the slide rail mechanism 1d is provided with a sliding portion for the left support plate 21 and the right support plate 31 to slide, and to keep the screen in a taut state during the opening and closing of the hinge to prevent the screen from bulging, and to closely adhere to the sliding portion of the support plate surface, the left support plate 21 and the right support plate 31 are respectively located on one side of the left lifting plate 12 and the right lifting plate 13, and are arranged flush with the left lifting plate 12 and the right lifting plate 13.

[0044] In this embodiment, the synchronization mechanism 1a also includes a support seat 1a1 installed inside the intermediate housing 11, and an arc-shaped opening that matches the middle part of the double-headed bevel gear 1a2 is arranged inside one end of the support seat 1a1, and the left gear rod 1a3 and the right gear rod 1a4 are located in the arc-shaped grooves on both sides of the support seat 1a1, and the ends of the left gear rod 1a3 and the right gear rod 1a4 away from the bevel gear are fixed with a notch joint 1a5, and a T-shaped connector 1a6 is inserted and connected in the straight notch of the notch joint 1a5, and one end of the T-shaped connector 1a6 is sleeved with the convex head 1a7 arranged at one end of the corresponding left connecting arm 1a8 and the right connecting arm 1a9 through the opening, and the notch joint 1a5, the T-shaped connector 1a6 and the convex head 1a7 are arranged at one end of the corresponding left connecting arm 1a8 and the right connecting arm 1a9. The connecting mechanism that constitutes the synchronization mechanism 1a is that the top of the support seat 1a1 is covered and connected with a cover body 1a11, and the bottom of the cover body 1a11 is also provided with corresponding arc-shaped openings and arc-shaped grooves, and the two sides of the cover body 1a11 are fixedly connected to the intermediate shell body 11 through the provided perforated ears and the locking pins 1a10, and the cover body 1a11 is plugged and fixed to the intermediate shell body 11 by the locking pins 1a10, which facilitates the disassembly and assembly of the cover body 1a11, and at the same time, after the cover body 1a11 is covered with the support seat 1a1, the arc-shaped grooves that are opposite to each other can limit the left gear rod 1a3 and the right gear rod 1a4 respectively, and at the same time, after the cover body 1a11 is covered with the support seat 1a1, the arc-shaped openings that are opposite to each other can limit the double-headed bevel gear 1a2.

[0045] Specifically, during the closing process of the inward folding mobile device: the left shell 2 moves clockwise, driving the left connecting arm 1a8 to move clockwise, the clockwise rotating left connecting arm 1a8 cooperates with the T-shaped connecting piece 1a6 and the notch joint 1a5 of the left gear rod 1a3 through the convex head 1a7 at one end thereof, and causes the left gear rod 1a3 to rotate clockwise, the clockwise rotating left gear rod 1a3 drives the right gear rod 1a4 to rotate counterclockwise after being transmitted through the double-headed bevel gear 1a2, and at the same time, the counterclockwise rotating right gear rod 1a4 cooperates with the notch joint 1a5 at one end thereof to rotate with the T-shaped connecting piece 1a6 and the convex head 1a7 at one end of the right connecting arm 1a9, and finally causes the counterclockwise rotating right connecting arm 1a9 to drive the right shell 3 to rotate counterclockwise, thereby realizing the synchronous closing movement between the left and right shells;

[0046] During the unfolding process of the inward-folding mobile device: the left shell 2 moves counterclockwise, and also drives the left connecting arm 1a8 to move counterclockwise. The left connecting arm 1a8 rotating counterclockwise drives the left gear rod 1a3 to move counterclockwise through the above-mentioned connecting mechanism; the left gear rod 1a3 drives the right gear rod 1a4 to move clockwise under the action of the bevel teeth 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, thereby realizing the synchronous unfolding movement between the left and right shells.

[0047] In this embodiment, the locking mechanism 1b includes two ball rods 1b1 which are arranged in parallel and located in the locking cavity inside the intermediate shell 11, and one end of each ball rod 1b1 is sleeved with a return spring A1b2 which is placed in the locking cavity and forms an elastic part. Openings are provided on both sides of the intermediate shell 11 for the ball head of the ball rod 1b1 to pass through, and the ball head of the ball rod 1b1 is in conflict with the lifting plate inclined surface 1b3 correspondingly arranged on the inner side of the left lifting plate 12 and the right lifting plate 13.

[0048] Specifically, during the closing process of the inward folding mobile device: when the hinge is closed, the left lifting plate 12 and the right lifting plate 13 rotate, and the lifting plate inclined surface 1b3 at one end of the lifting plate presses the spherical surface of the ball rod 1b1 inward, so that the two ball rods 1b1 move horizontally toward the middle and compress the return spring A1b2. During the closing process, when the spherical surface passes over the inclined surface, the lifting plate is subjected to the combined force provided by the return spring A1b2, and after the center conversion (i.e., the lever principle) of the lifting plate inclined surface 1b3, the outer side of the lifting plate generates an inward combined force, so that the lifting plate can be automatically closed and locked while preventing the hinge from loosening;

[0049] During the unfolding process of the inward-folding mobile device: the left lifting plate 12 and the right lifting plate 13 rotate. When the lifting plate rotates until the spherical surface of the ball rod 1b1 contacts the lifting plate inclined surface 1b3, the lifting plate inclined surface 1b3 is provided with a force by the return spring A1b2 of the vertical inclined surface. After the conversion of the center of the lifting plate inclined surface 1b3 (i.e., the lever principle), a downward force is generated on the outer side of the lifting plate, so that the lifting plate can be automatically opened and locked while preventing the rotating shaft from loosening.

[0050] In this embodiment, the support and avoidance mechanism 1c includes a U-shaped connecting plate 1c1 fixedly connected to the outer sides of the corresponding left lifting plate 12 and the right lifting plate 13, the U-shaped connecting plate 1c1 is rotatably connected to one end of the connecting rod 1c7 through a pin shaft, the other end of the connecting rod 1c7 is interspersed with a sliding shaft 16, the two ends of the sliding shaft 1c6 are respectively slidably connected to the sliding grooves set in the middle parts of the two connecting arms 1c5, one end of the connecting arm 1c5 is fixedly connected to the spring seat 1c2, the interior of the spring seat 1c2 is interspersed with a push rod 1c4 that conflicts with the sliding shaft 1c6, and the outside of the push rod 1c4 is also sleeved with a reset spring B1c3 placed in the spring seat 1c2 and causing the push rod 1c4 to reset, the U-shaped connecting plates 1c1 of the four support and avoidance mechanisms 1c are also fixedly connected to the four connecting arms of the two synchronization mechanisms 1a through screws, when the left and right housings are driven to rotate by the connecting arms of the synchronization mechanism 1a, the four support and avoidance mechanisms 1c are also driven to rotate synchronously.

[0051] Specifically: during the closing process of the inward folding mobile device: the left shell 2 rotates clockwise, the right shell 3 rotates counterclockwise, the left lifting plate 12 and the right lifting plate 13 rotate and sink, driving the connecting rod 1c7 to rotate and sink, and the sliding shaft 1c6 slides inside the sliding groove of the connecting arm 1c5, and squeezes the top rod 1c4 to move to both sides; the lifting plate avoids space to bend the screen during the hinge closing process;

[0052] During the unfolding process of the inward-folding mobile device: the left shell 2 rotates counterclockwise, the right shell 3 rotates clockwise, the left lifting plate 12 and the right lifting plate 13 rotate and rise; at the same time, the left and right lifting plates drive the connecting rod 1c7 to rotate and rise, and the sliding shaft 1c6 slides inside the sliding groove of the connecting arm 1c5, and the return spring B1c3 pushes the push rod 1c4 to move to the middle; the push rod 1c4 pushes the connecting rod 1c7 to support the lifting plate, thereby supporting the screen, so that the lifting plate rises to support the screen during the hinge opening process.

[0053] In this embodiment, the slide rail mechanism 1d includes two slide seats 1d5 which are arranged opposite to each other and used to install the support plate, wherein a slide rod 1d3 is inserted and connected in an opening in the middle of the slide seat 1d5, and a first T-shaped seat 1d1 and a second T-shaped seat 1d2 are respectively sleeved on both ends of the slide rod 1d3, and a return spring C1d4 is provided between the first T-shaped seat 1d1 and the slide seat 1d5, which is sleeved on the outside of the slide rod 1d3 and allows the slide seat 1d5 to slide and return.

[0054] Specifically, during the closing process of the inward folding mobile device: the screen installed on the inner side of the left support plate 21 and the right support plate 31 is bent and hidden in the avoidance area of ​​the lifting plate, and the two slide seats 1d5 slide outward under the guidance of the corresponding two slide bars 1d3, so that the left support plate 21 and the right support plate 31 move outward to tighten the screen to prevent the screen from bulging;

[0055] During the unfolding process of the inward-folding mobile device: the left lifting plate 12 and the right lifting plate 13 rise to support the screen, the screen pulls the left support plate 21 and the right support plate 31 on both sides toward the middle, and the two slides 1d5 compress the return spring C1d4, so that the screen is in a taut state to prevent the screen from bulging.

[0056] Furthermore, a plurality of connecting seats 1e are installed inside the intermediate shell 11, and the protrusions on both sides of the connecting seats 1e are respectively connected with the inner U-shaped openings of the left lifting plate 12 and the right lifting plate 13 through pins. The intermediate shell 11 is rotated with the left lifting plate 12 and the right lifting plate 13 by means of a plurality of connecting seats 1e installed at the corresponding mounting positions in the middle part, and cooperates with the pins to prevent the left lifting plate 12 and the right lifting plate 13 from falling off from the intermediate shell 11 when the hinge rotates.

[0057] Furthermore, a middle support plate 111 is installed on the top of the intermediate shell 11, and the middle support plate 111 is arranged flush with the left lifting plate 12 and the right lifting plate 13, ensuring that the flexible display screen can be smoothly supported on the inside of the mobile inward folding device, reducing the stress on the screen when the hinge rotates, and improving the service life of the flexible display screen.

[0058] An inward folding mobile device comprises an inward folding hinge as described in any one of the above items, and also comprises a left shell 2 and a right shell 3 constituting a shell of the device, wherein the left shell 2 and the right shell 3 are respectively located on both sides of an intermediate shell 11, and the inner ends of the left shell 2 and the right shell 3 are respectively rotatably connected to a left connecting arm 1a8 and a right connecting arm 1a9, thereby ensuring that the left shell 2 and the right shell 3 can realize synchronous rotation clockwise and counterclockwise through the connecting arm of a synchronization mechanism 1a.

[0059] Furthermore, multiple spring seats 1c2, first T-shaped seats 1d1 and second T-shaped seats 1d2 are fixedly connected to the corresponding inner sides of the left shell 2 and the right shell 3, respectively, ensuring that the hinge can support the screen when opened and avoid space for the screen to bend when closed through the support avoidance mechanism 1c, and ensuring that the screen is always in a taut state during the process of opening and closing the hinge through the slide rail mechanism 1d to prevent the screen from bulging and keep it close to the surface of the support plate.

[0060] 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.

[0061] 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.

[0062] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An inner folding hinge, comprising a hinge mechanism, characterized in that: The hinge mechanism comprises: An intermediate shell and a left lifting plate and a right lifting plate respectively located on both sides of the intermediate shell, wherein a plurality of installation positions are provided inside the intermediate shell; Two symmetrically arranged synchronous mechanisms are installed on corresponding installation positions and are located at both ends of the interior of the intermediate housing, and a bevel gear set is arranged inside the synchronous mechanism to ensure smooth rotation of the hinge and mutual meshing, wherein the bevel gear set includes a double-headed bevel gear, and the two sides of the double-headed bevel gear are meshedly connected with a left gear rod and a right gear rod with bevel teeth at the end, and one end of the left gear rod and the right gear rod are respectively connected to a left connecting arm and a right connecting arm for driving the device housing to rotate synchronously through a connecting mechanism; A plurality of locking mechanisms for rotating and locking the left and right lifting plates and preventing the device housing from being over-folded and drooped, wherein the locking mechanisms include two symmetrically arranged elastic parts that cooperate with the lifting plates, and the locking mechanisms are also installed at corresponding installation positions; A plurality of support and avoidance mechanisms are installed corresponding to the left lifting plate and the right lifting plate, and are used to realize that the hinge can support the screen when it is opened and can avoid space for the screen to bend when it is closed; and a plurality of slide rail mechanisms, wherein the slide rail mechanisms are provided with a sliding portion for sliding the left support plate and the right support plate, and the screen is kept in a taut state during the opening and closing of the hinge to prevent the screen from bulging and closely attached to the surface of the support plate, wherein the left support plate and the right support plate are respectively located on one side of the left lifting plate and the right lifting plate, and are arranged flush with the left lifting plate and the right lifting plate; The synchronization mechanism also includes a support seat installed inside the intermediate shell, one end of the support seat is provided with an arc-shaped opening that matches the middle part of the double-headed bevel gear, the left gear rod and the right gear rod are located in the arc-shaped grooves on both sides of the support seat, and the left gear rod and the right gear rod are fixed with a notch joint at one end away from the bevel gear, and a T-shaped connector is inserted and connected in the I-shaped notch of the notch joint, one end of the T-shaped connector is connected to the corresponding convex head provided at one end of the left connecting arm and the right connecting arm through the provided opening, and the notch joint, the T-shaped connector and the convex head constitute the connection mechanism of the synchronization mechanism, the top of the support seat is covered and connected with a cover body, and the bottom of the cover body is also provided with corresponding arc-shaped openings and arc-shaped grooves.

2. The inner folding hinge according to claim 1, characterized in that: The locking mechanism includes two ball clubs arranged in parallel and located in the locking cavity inside the intermediate shell, and one end of each ball club is sleeved with a return spring A placed in the locking cavity and forming an elastic part, and both sides of the intermediate shell are provided with openings for the ball heads of the ball clubs to pass through, and the ball heads of the ball clubs are in conflict with the corresponding lifting plate inclined surfaces arranged on the inner sides of the left lifting plate and the right lifting plate.

3. The inner folding hinge according to claim 2, characterized in that: The support and avoidance mechanism includes a U-shaped connecting plate fixedly connected to the outer sides of the corresponding left lifting plate and the right lifting plate, the U-shaped connecting plate is rotatably connected to one end of the connecting rod through a pin shaft, the other end of the connecting rod is interspersed with a sliding shaft, the two ends of the sliding shaft are respectively slidably connected to the sliding grooves set in the middle of the two connecting arms, one end of the connecting arm is fixedly connected to the spring seat, the interior of the spring seat is interspersed with a push rod that contacts the sliding shaft, and the outside of the push rod is also sleeved with a reset spring B placed in the spring seat and causing the push rod to reset, wherein the four U-shaped connecting plates of the support and avoidance mechanism are also fixedly connected to the four connecting arms of the two synchronization mechanisms through screws.

4. The inner folding hinge according to claim 3, characterized in that: The slide rail mechanism includes two slide seats which are arranged opposite to each other and used to install the support plate, wherein a slide rod is inserted into the opening in the middle of the slide seat, and a first T-shaped seat and a second T-shaped seat are respectively sleeved on both ends of the slide rod, and a reset spring C is sleeved on the outside of the slide rod and allows the slide seat to slide and reset.

5. The inner folding hinge according to claim 4, characterized in that: A plurality of connection seats are also installed inside the intermediate shell, and the protrusions on both sides of the connection seats are respectively connected with the inner U-shaped openings of the left lifting plate and the right lifting plate through pins.

6. The inner folding hinge according to claim 5, characterized in that: A middle support plate is installed on the top of the intermediate shell, and the middle support plate is arranged flush with the left lifting plate and the right lifting plate.

7. An inward folding mobile device, characterized in that: It includes an inner folding hinge as described in any one of claims 1 to 6, and also includes a left shell and a right shell that constitute a device shell, the left shell and the right shell are respectively located on both sides of the middle shell, and the inner ends of the left shell and the right shell are respectively rotatably connected to the left connecting arm and the right connecting arm.

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