CN109979328A - A kind of interior folding linkage with excellent support effect - Google Patents

Abstract

The invention discloses an inward-folding hinge mechanism with good supporting effect, belonging to the technical field of folding display devices. The protection cover is provided with a first outer frame and a second outer frame, and each support arm of both faces One side of the protective cover plate is provided with an inclined surface; it also includes a hinge assembly, through which the first outer frame and the second outer frame are connected to form a frame structure, and the two rotate around the same axis to protect the The cover plate is switched from a plane shape to an overlapping shape; the bending trajectory of the hinge assembly is an arc line, and the arc line is tangent to the extension line of the inclined surface; the first outer frame and the second outer frame are A support plate is hinged between the two arms, and the two support plates can be spliced into a support plane, and the support plane is attached to the surface of the protective cover, so as to achieve the radius of curvature R during the inward folding of the protective cover. The maximization of the hinge mechanism and the simplification of the overall structure of the hinge mechanism achieve the purpose of having good support during the use of the protective cover.

Description

An Inward Folding Hinge Mechanism with Good Supporting Effect

technical field

The invention belongs to the technical field of folding display devices, and in particular relates to an inward folding hinge mechanism with good supporting effect.

Background technique

Flexible display devices have the advantages of impact resistance, light weight, and easy portability. They have functions and user experience advantages that cannot be achieved by traditional displays. Therefore, flexible display technology is more and more people's attention, and the protective cover is flexible display. An integral part of the device.

In the era of rapid development of smart phones, due to the requirements of light transmittance, strength and surface hardness, glass material has always been the first choice for mobile phone covers. With the maturity of 3D glass technology, the glass cover continues to the curved screen mobile phone with a fixed curvature.

At present, different manufacturers of foldable displays choose CPI film as a protective cover. CPI film (Colorless Polyimide) is essentially a resin material polyimide, and the main chain contains an imide ring (-CO-N -CO-), among which the polymers containing phthalimide structure are the most important. As a special engineering material, polyimide has been widely used in aviation, aerospace, microelectronics, nano, liquid crystal, separation membrane, laser and other fields. The existing flexible OLED substrate is also PI, and CPI is yellowed on the basis of PI to meet the optical requirements of the cover plate.

CPI is becoming more and more mature in technology and can be directly applied. However, its shortcomings are obvious: the surface hardness of the CPI material is poor, which leads to the accumulation of visible traces from users' bumps in daily use; in addition, film products have material fatigue problems, which cannot be recovered after tens of thousands of bending times. original flatness.

The existing foldable displays mainly have the following defects:

1) When the display screen using CPI film is unfolded, the middle of the screen is raised, with ripples, wrinkles, etc.;

2) When the display screen using CPI film is unfolded, the screen itself is not flat enough;

3) The display screen using CPI film is not smooth enough when it is opened and closed, and it needs material force;

4) When the display screen using CPI film is folded, a gap will be formed at the fold;

5) The hinge structure design for realizing the folding of the display screen using the CPI film is complicated and the cost is high.

The reason for the above-mentioned defects is that the CPI film, which is a polymer material, has elastic properties, and after repeated folding, the film will produce relaxation, elongation, and creases. This problem is a common problem with the use of polymer materials.

In response to the above problems, the stress of the CPI film when it is repeatedly folded can be reduced, or it can be replaced with ultra-thin glass with high surface strength and no relaxation, elongation and crease. In addition, the material itself has good The self-healing ability of the film can still restore the original flatness after repeated bending for a long time, and there is no problem of fatigue of membrane materials. However, the fatal defect of ultra-thin glass is that it is fragile, especially when it is folded inwardly, and the stress on it is relatively large, which can easily cause damage to the ultra-thin glass.

In summary, according to the stress formula Among them, ε = stress (dimensionless), Z = the distance between the neutral plane and the surface, R = the radius of curvature, it can be seen from the above formula that in order to minimize the stress, the radius of curvature R should be maximized under the required thickness of the equipment. By maximizing the radius of curvature R, the stress on the CPI film can be minimized, which can solve the slack and crease problems of the screen. At the same time, ultra-thin glass corresponding to the smallest radius of curvature that can be tolerated can also be used. If ultra-thin glass is used, the problem of screen relaxation and crease can also be solved. At the same time, in order to prevent gaps in the middle part of the screen, and the hinge structure in the middle part of the screen can be smoothly opened and closed, it is urgent to develop a hinge structure.

SUMMARY OF THE INVENTION

In view of this, in order to solve the above problems existing in the prior art, the purpose of the present invention is to provide an inward folding hinge mechanism with good supporting effect, so as to achieve the maximum curvature radius R of the protective cover during the inward folding process It can minimize the stress, and simplify the overall structure of the hinge mechanism, so as to achieve the purpose of good support during the use of the protective cover.

The technical scheme adopted in the present invention is: an inward folding hinge mechanism with good supporting effect, comprising a protective cover plate, the protective cover plate is provided with a first outer frame and a second outer frame, the first outer frame The frame and the second outer frame are both U-shaped structures, and each support arm of the U-shaped structure is provided with an inclined surface on one side of the protection cover; it also includes a hinge assembly, the first outer frame and the second outer frame are provided with inclined surfaces. The frame is connected into a frame structure through the hinge assembly, and the hinge assembly drives the first outer frame and the second outer frame to rotate around the same axis and switches the protective cover plate from a plane shape to an overlapping shape; the bending trajectory of the hinge assembly is: A circular arc line, the circular arc line is tangent to the extension line of the inclined surface;

A supporting plate is hinged between the two arms of the first outer frame and the second outer frame, and the two supporting plates can be spliced into a supporting plane, and the supporting plane is attached to the surface of the protective cover to achieve the The bending surface of the protective cover plate is constrained to achieve the purpose of the maximum curvature radius R, thereby reducing the stress of the protective cover plate during the bending process, so as to eliminate the phenomenon of easy generation of creases.

Further, the two supporting plates are symmetrically arranged with respect to the center line between the first outer frame and the second outer frame, and each supporting plate is attached to the surface of the protective cover plate and follows the protective cover plate to act. The rotation movement ensures that during the relative rotation of the first outer frame and the second outer frame, the two supporting plates can run synchronously, and the supporting force for the protective cover plate is more stable.

Further, the protective cover plate is ultra-thin glass or CPI film, and this structure can be applied to ultra-thin glass or CPI film at the same time, especially for CPI film, which can provide good support for it in the initial state and prevent the surface Collapse phenomenon, and the structure is simple and reliable.

Further, it also includes a first casing bottom plate, a second casing bottom plate and a cover, the first casing bottom plate and the second casing bottom plate are respectively connected to the first outer frame and the second outer frame, and the first casing bottom plate and the second outer frame are respectively connected. The second shell bottom plate is hingedly connected to both sides of the cover, and the cover is provided with an inner cavity for accommodating the hinge assembly and the support plate, so as to realize the assembly of the cover, so that the cover can protect the cover after the protection cover is folded. cover to accommodate.

Further, it also includes a casing side plate, the casing side plate is in the shape of a corrugated belt, and the side surfaces of the casing side plate are respectively connected to the first outer frame and the second outer frame.

Further, the hinge assembly includes a bending channel arranged between the first outer frame and the second outer frame, a plurality of gears are arranged in the bending channel, and both sides of the bending channel are provided with driving plates. , the end of the drive plate is provided with a drive tooth that meshes with the gears; the two drive plates are respectively slidably arranged on the ends of the arms of the first outer frame and the second outer frame, and the respective gears of the hinge assembly are mutually In the case of meshing, the bending surface can be realized as an arc line, and the bending surface of the protective cover plate can be well restrained.

Further, the ends of the arms of the first outer frame and the second outer frame are provided with chute, the drive plate is assembled in the chute, and a reserved space for the movement of the drive plate can be formed in the chute, In order to realize the linkage of the driver board.

Further, the bending channel includes a first bending plate and a second bending plate arranged in parallel, and the relative movement of the first outer frame and the second outer frame drives the first bending plate and the second bending plate. In the bending motion of the bending plate, the first bending plate and the second bending plate can limit the position of each gear, and can cooperate with each gear to realize the formation of the bending surface.

Further, both the first bending plate and the second bending plate are made of flexible materials, and the flexible materials can ensure the smooth operation of the bending operation.

Further, both ends of the first bending plate are respectively assembled on the arm ends of the first outer frame and the second outer frame, and both ends of the second bending plate are respectively assembled on the first outer frame. On the outer frame and the ends of the arms of the second outer frame, the complexity of the overall structure can be simplified.

The beneficial effects of the present invention are:

1. The inward folding hinge mechanism suitable for display devices provided by the present invention is adopted, and the relative rotation of the first outer frame and the second outer frame is realized through the hinge assembly, and the bending trajectory of the hinge assembly is a circular arc. The line is tangent to the inclined surface to ensure that after the protective cover is bent, the bending curve of the protective cover has the largest radius of curvature, so as to minimize the stress on the protective cover and alleviate the existing technology. The protective cover is prone to a large number of creases during the reciprocating folding process.

2. Both the first outer frame and the second outer frame are provided with support plates, and the support plates are supported on the surface of the protection cover. At the same time, the two support plates are spliced into a support plane to protect the cover of different materials. Both can provide good support and have wide applicability. When the protection cover is bent between the first outer frame and the second outer frame, especially when the CPI film is used as the protection cover, it can solve the problem of easy problems. The problem of surface collapse occurs.

3. The hinge assembly used in this application is driven by a plurality of gears and the drive plates at both ends, so that when the first outer frame and the second outer frame both rotate relative to each other, the bending trajectory of the hinge assembly is an arc line. , compared with the existing hinge assembly, it has the advantages of simple structure and even and gentle bending trajectory

4. There is also a cover between the first outer frame and the second outer frame. When the hinge mechanism is in a bent state, the ends of the two support plates can be accommodated through the cover to ensure the appearance of the entire hinge mechanism. At the same time, it can play a good role in protecting the hinge assembly.

Description of drawings

1 is a schematic diagram of the overall assembly structure of Embodiment 1 of the inward-folding hinge mechanism with good support provided by the present invention in an unfolded state;

Fig. 2 is the partial enlarged schematic diagram of Fig. 1;

3 is a schematic diagram of the overall assembly structure of Embodiment 1 of the inwardly foldable hinge mechanism with good support provided by the present invention in an unfolded state;

4 is a schematic diagram of the overall assembly structure of Embodiment 1 of the inwardly folded hinge mechanism with good support provided by the present invention in a folded state;

5 is a schematic diagram of the internal structure of Embodiment 1 of the inward-folding hinge mechanism with good support provided by the present invention in a folded state;

Fig. 6 is the overall external schematic diagram of the inward folding hinge mechanism with good supporting effect provided by the present invention;

7 is a schematic structural diagram of the hinge assembly in Embodiment 2 of the inward-folding hinge mechanism with good support provided by the present invention;

8 is a schematic structural diagram of the hinge assembly in Embodiment 3 of the inward-folding hinge mechanism with good supporting effect provided by the present invention;

Fig. 9 is the partial structure schematic diagram of Fig. 8;

10 is a schematic view of the assembly structure covered in Embodiment 1 of the inwardly foldable hinge mechanism with good supporting effect provided by the present invention;

The reference numerals are as follows:

Protection cover plate-1, first outer frame-2, second outer frame-3, cover-4, inclined surface-5, support plate-6, first bending plate-7, driving plate-8, second folding plate Bending plate-9, first shell bottom plate-10, second shell bottom plate-11, shell side plate-12, first shielding side plate-13, second shielding side plate-14, gear-15, chute-16, The third drive plate-17, the bending chain-18, the first drive plate-19 and the second drive plate-20, the hanging groove-21, the hook-22, the hinge plate-23.

Detailed ways

In order to make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments These are some embodiments of the present invention, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the drawings herein may be arranged and designed in a variety of different configurations.

Thus, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

It should be noted that the embodiments of the present invention and the features of the embodiments may be combined with each other under the condition of no conflict.

It should be noted that like numerals and letters refer to like items in the following figures, so once an item is defined in one figure, it does not require further definition and explanation in subsequent figures.

In the description of the embodiments of the present invention, it should be noted that the indicated azimuth or positional relationship is based on the azimuth or positional relationship shown in the accompanying drawings, or the azimuth or positional relationship that the product of the invention is usually placed in use, or the present invention. Orientation or positional relationship that is commonly understood by those skilled in the art, or the orientation or positional relationship that the product of the invention is commonly placed in use, 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 be It has a specific orientation, is constructed and operates in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, the terms "first" and "second" are only used to differentiate the description, and should not be construed as indicating or implying relative importance.

In the description of the embodiments of the present invention, it should also be noted that, unless otherwise expressly specified and limited, the terms "arrangement" and "connection" should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection , or integrally connected; it can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, they can understand the specific meanings of the above terms in the accompanying drawings in the embodiments of the present invention under specific circumstances, and clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the description The embodiments described above are part of the embodiments of the present invention, but not all of the embodiments. The components of the embodiments of the invention generally described and illustrated in the drawings herein may be arranged and designed in a variety of different configurations.

Example 1

As shown in FIG. 1 , in this embodiment, an inward-folding hinge mechanism with good supporting effect is provided, which includes a protective cover 1 , and the protective cover 1 is used to be assembled on a flexible display screen to provide flexible display The screen plays a good protective role and will not be repeated here.

As shown in FIG. 2 , a first outer frame 2 and a second outer frame 3 are arranged on the same side of the protective cover 1 , and the first outer frame 2 and the second outer frame 3 adopt the same shape and size structure, and A gap is left between the two so that the first outer frame 2 and the second outer frame 3 can rotate relative to each other. The first outer frame 2 and the second outer frame 3 both have a U-shaped structure, and the open ends of the first outer frame 2 and the second outer frame 3 are arranged opposite to each other, and each support arm of the U-shaped structure faces the protective cover. One side of the plate 1 is provided with an inclined surface 5. In theory, the inclined angle of the inclined surface 5 should be as small as possible, and the bending stress on the protective cover plate 1 should be smaller. 2 and the length of the arms of the second outer frame 3, so as to reasonably set the inclination angle of the inclined surface 5, and the inclination angle of the inclined surface 5 can be limited between 10° and 20°. Preferably, in this embodiment , the inclination angle of the inclined surface 5 is 15°.

As shown in FIG. 5 , it also includes a hinge assembly. The first outer frame 2 and the second outer frame 3 are connected to form a frame structure through the hinge assembly. The frame structure forms an assembly space for the display screen, and the hinge assembly drives the first outer frame. An outer frame 2 and a second outer frame 3 rotate around the same axis (prompting the first outer frame 2 and the second outer frame 3 to be in the same horizontal plane or in a mutually folded state), and when the two are rotated relative to each other, the protective cover can be The board 1 is switched from a flat shape to an overlapping shape to realize the function of a folding screen; the bending trajectory of the hinge assembly is a circular arc, and the bending trajectory of the circular arc can be well matched with the curved surface of the protective cover 1 . Match and constrain its bending surface to control the bending radius of the protective cover 1 to finally reduce the stress of the protective cover 1 during the bending process. The extension line is tangent to ensure that the bending surface of the protective cover 1 can perform a good transition during the bending process. From a differential point of view, because there is no too small bending The curved surface segment can ensure that the transition between the inclined surface 5 of the protective cover 1 and the curved surface has the smallest curvature. At this time, the curvature radius is the largest, the stress is the smallest, and the generation of creases is minimized.

As shown in FIG. 3 , a support plate 6 is hinged between the two arms of the first outer frame 2 and the second outer frame 3 , and the support plate 6 is attached to the surface of the protection cover 1 and Follow the protective cover 1 to make a rotating motion to provide a good support effect to the protective cover 1 in real time; when in the unfolded state, the two support plates 6 can be spliced into a support plane, and the support plane is attached to the protective cover On the surface of the cover plate 1, the rotation trajectories of the two support plates 6 are tangent (that is, there is no gap between the opposite sides of the two support plates 6). spliced to form a support plane, therefore, when the first outer frame 2 and the second outer frame 3 are in a folded state, the end sides of the two support plates 6 will protrude from the bending surface formed by the hinge assembly. range.

In this embodiment, in order to further improve the supporting effect of the support plate 6, the support plate 6 is hinged to the two arms of the first outer frame 2 and the second outer frame 3 through a rotating shaft, and the rotating shaft is sleeved on the two arms of the first outer frame 2 and the second outer frame 3. There is a torsion spring (not shown in the drawings), which provides an appropriate restoring force to the support plate 6, so that when the protective cover plate 1 is switched from the folded state to the flat state, the support plate 6 can be reset to a horizontal state and protect the The cover plate 1 provides a good support function; at the same time, the surface of the support plate 6 should be in contact with the surface of the protective cover plate 1 in the initial state; the surface of the support plate 6 should be in the folded state. The surfaces of the surfaces 5 are flush, so that the protective cover 1 can be attached to the surface of the protective cover 1 in real time, so as to provide a good supporting force for the protective cover 1 .

In order to reduce the manufacturing cost and the stability of the hinge structure during operation, as shown in FIG. 3 , the two support plates 6 are symmetrically arranged with respect to the center line between the first outer frame 2 and the second outer frame 3 , and Each support plate 6 is attached to the surface of the protective cover plate 1 and follows the protective cover plate 1 for rotational movement, so as to realize the relative rotation of the first outer frame 2 and the second outer frame 3. The supporting plate 6 moves synchronously and provides the same supporting force to the protective cover plate 1 .

The protective cover 1 is made of ultra-thin glass or CPI film, especially when the CPI film is used as the protective cover 1, since in the unfolded state, the two supporting plates 6 can be spliced into a supporting plane, which can prevent the CPI film. Collapse occurs, and at the same time, the complexity of the entire hinge mechanism will not be increased.

As shown in FIG. 10 , it also includes a first casing bottom plate 10 , a second casing bottom plate 11 and a cover 4 . The first casing bottom plate 10 and the second casing bottom plate 11 are located in the same plane and are respectively connected to the first casing bottom plate 10 and the second casing bottom plate 11 . On the outer frame 2 and the second outer frame 3, the first shell bottom plate 10 and the second shell bottom plate 11 are hingedly connected to both sides of the cover 4, and the cover 4 is provided with the hinge assembly and the support plate 6. lumen. The cover 4 is in the form of a rectangular frame with one end open. The opposite sides of the rectangular frame are hingedly connected with the first shell bottom plate 10 and the second shell bottom plate 11, and the other two opposite side plates (named as: first shielding side plates) 13 and the second blocking side plate 14) should be higher than the plane where the open end of the rectangular frame is located, as shown in Figure 10. With this structure, when the hinge mechanism is in the folded state, the two opposite side panels can shield the side structures.

As shown in FIG. 6 , it also includes a casing side plate 12 , the casing side plate 12 is in the shape of a corrugated belt, and the side surfaces of the casing side plate 12 are respectively connected to the first outer frame 2 and the second outer frame 3 , On the one hand, the use of the shell side plate 12 can beautify the appearance, and on the other hand, when the first outer frame 2 and the second outer frame 3 rotate relative to each other, the corrugated belt-shaped shell side plate can produce a good deformation effect. The use of the corrugated belt-shaped casing side plate 12 is only the preferred technical solution in this embodiment. In actual conditions, since the first shielding side plate 13 and the second shielding side plate 14 are provided in the cover 4, the casing side plate can be set as The two are respectively arranged on the side surfaces of the first outer frame 2 and the second outer frame 3. When the first outer frame 2 and the second outer frame 3 are rotated to the folded state, the ends of the side plates of the casing can be replaced by the first outer frame 2 and the second outer frame 3. The shielding side plate 13 and the second shielding side plate 14 are shielded by the side plates, which can also ensure good appearance aesthetics. Of course, as shown in FIG. 4 , a structure in which the first shielding side plate 13 and the second shielding 14 are flush with the opening end face of the cover 4 can also be arranged, and mounted on the first outer frame 2 and the second outer frame 3 The outer casing side plate 12 should have a gap at the end near the cover 4 to ensure that both the first outer frame 2 and the second outer frame 3 can rotate normally and after the rotation, the outer casing side plate 12 should be in contact with the cover 4. stitching.

The hinge assembly includes a bending channel arranged between the first outer frame 2 and the second outer frame 3, that is, the bending channel is a deformable channel path, and a plurality of gears 15 are arranged in the bending channel. , the size of each gear 15 is determined by the inner space of the bending channel and each gear 15 has a columnar structure, and both sides of the bending channel are provided with a driving plate 8, and the end of the driving plate 8 is provided with the gear 15. The end of the drive plate 8 is provided with a drive tooth that meshes with the gear 15; the two drive plates 8 are respectively slidably arranged on the arm ends of the first outer frame 2 and the second outer frame 3 department. When the first outer frame 2 and the second outer frame 3 rotate relative to each other, the first outer frame 2 and the second outer frame 3 will rotate in conjunction with their respective driving plates 8, and each gear 15 will be linked during the rotation of the driving plate 8. It also follows the rotation. At the same time, since the driving plate 8 can also produce sliding motion inside the first outer frame 2 and the second outer frame 3, after the bending channel is bent, it can be ensured that the protective cover 1 is in the folded state. When the bending channel is bent, the bending curve of the bending channel is arc-shaped to prevent the ultra-thin glass from being fragile at the bending point.

As shown in FIG. 3 , the ends of the arms of the first outer frame 2 and the second outer frame 3 are each provided with a chute 16 , and the driving plate 8 is assembled in the chute 16 . When the second outer frame 3 is in a horizontal state, the distance between the bottoms of the two sliding grooves should be greater than the distance between the ends of the two driving plates 8, so that the driving plate 8 can slide in the sliding grooves 16 during the bending process. to adjust and fit the bend radius.

As shown in FIG. 2 , the bending channel includes a first bending plate 7 and a second bending plate 9 arranged in parallel, and the relative movement of the first outer frame 2 and the second outer frame 3 can drive the The bending motion of the first bending plate 7 and the second bending plate 9 is described. During the bending movement, the gears 15 inside the bending channel mesh with each other, so as to constrain the bending surface of the bending channel well; the first bending plate 7 and the second bending plate 9 are made of flexible Made of materials, such as: non-metallic polymer materials, polytetrafluoroethylene (Poly tetra fluoroethylene, or PTFE), polyethylene terephthalate (Polyethylene terephthalate, or PET), polyethylene naphthalate One or more of non-metallic polymer materials such as Polyethylenenaphthalate (PEN), Polycarbonates (PC), Polysulfones (PES), and Polyimide (PI). kind;

Metals: Nickel Tianium, Copper/Zinc/Aluminiumalloy, Copper/Aluminium/Nickel alloy, Stainless steel and other metal polymer materials or several.

Both ends of the first bending plate 7 are respectively assembled on the arm ends of the first outer frame 2 and the second outer frame 3, and both ends of the second bending plate 9 are respectively assembled on the first outer frame 2 and the second outer frame 3. On the arms ends of the first outer frame 2 and the second outer frame 3, in this embodiment, both ends of the first bending plate 7 and the second bending plate 9 are clamped in the corresponding chute 16 respectively.

Example 2

As shown in FIG. 7 , based on Embodiment 1 and Embodiment 2, in the actual product application process, the hinge assembly can also be realized by the following structure. The hinge assembly includes a bending channel and a bending channel installed inside the bending channel. Folding chain 18, the folding chain 18 is set as a watchband structure, there are many kinds of watchband structures, the structure adopted in this embodiment is shown in Figure 7 as an example; A third driving plate 17 is slidably disposed at the end of the support arm, and the end of the third driving plate 17 is hingedly connected with the bending chain 18 .

The bending channel includes a first bending plate 7 and a second bending plate 9 arranged in parallel, and the relative movement of the first outer frame 2 and the second outer frame 3 drives the first bending plate 7 and the second bending plate 9. During the bending movement of the second bending plate 9, the bending chain 18 inside the bending channel is linked under the action of the driving plate, so as to constrain the bending surface of the bending channel well and ensure The curved surface is arc-shaped; the first bending plate 7 and the second bending plate 9 are made of flexible materials. In the embodiment, the flexible materials are: non-metallic polymer materials, polytetrafluoroethylene (Poly tetrafluoroethylene, namely PTFE), polyethylene terephthalate (Polyethylene terephthalate, namely PET), polyethylene naphthalate (Polyethylene naphthalate, namely PEN), polycarbonate (Polycarbonates, namely PC) , One or more of non-metallic polymer materials such as polysulfones (PES) and polyimide (PI);

Metals: Nickel Tianium, Copper/Zinc/Aluminiumalloy, Copper/Aluminium/Nickel alloy, Stainless steel and other metal polymer materials or several.

In the above, the size of the designed bending chain 18 is set according to the bending radius of the bending channel. When the bending radius is smaller, the size of the unit link in the bending chain 18 should be reduced. When the first outer frame 2 and the second outer frame 3 rotate relative to each other, under the driving action of the drive plates at both ends, each unit link in the bending chain 18 can be linked to rotate slightly, so as to realize the formation of the entire bending chain 18. The curved surface can provide good support for the protective cover 1 .

Example 3

As shown in FIG. 8 and FIG. 9 , based on Embodiment 1 and Embodiment 2, in the actual product application process, the hinge assembly can also be realized by the following structure, the hinge assembly includes a bending channel and is assembled on the bending There are several hinge plates 23 in the channel, and the opposite sides of each hinge plate 23 are respectively provided with hanging grooves 21 and hooks 22, and the hanging grooves 21 and hooks 22 on each hinge plate 23 are assembled and connected in sequence to form a hinge chain The arm ends of the first outer frame 2 and the second outer frame 3 are respectively slidably provided with a first driving board 19 and a second driving board 20, and the first driving board 19 and the second driving board 20 are respectively provided with There are hooks 22 and hanging grooves 21, and the hooks 22 and the hanging grooves 21 are respectively assembled and connected with both ends of the hinged link plate.

The bending channel includes a first bending plate 7 and a second bending plate 9 arranged in parallel, and the relative movement of the first outer frame 2 and the second outer frame 3 drives the first bending plate 7 and the second bending plate 9. During the bending movement of the second bending plate 9, each hinge plate 23 inside the bending channel is linked with each other, so as to constrain the bending surface of the bending channel well and ensure that the bending surface is round The first bending plate 7 and the second bending plate 9 are made of flexible materials. In the embodiment, the flexible materials are: non-metallic polymer materials, polytetrafluoroethylene Namely PTFE), polyethylene terephthalate (Polyethylene terephthalate, namely PET), polyethylene naphthalate (Polyethylene naphthalate, namely PEN), polycarbonate (Polycarbonates, namely PC), polysulfone ( One or more of non-metallic polymer materials such as Polysulfones (PES) and Polyimide (PI);

Metals: Nickel Tianium, Copper/Zinc/Aluminiumalloy, Copper/Aluminium/Nickel alloy, Stainless steel and other metal polymer materials or several.

In the above, the size of the design hinge plate 23 is set according to the bending radius of the bending channel. When the bending radius is smaller, the width of the hinge plate 23 should be reduced. When the first outer frame 2 and the second outer frame 3 are opposite During rotation, under the driving action of the first drive plate 19 and the second drive plate 20, each hinge plate 23 can be linked to make a slight rotation, so as to realize the bending of the entire hinge plate to form a curved surface, and the curved surface can protect the The cover plate 1 provides good support.

The present invention is not limited to the above-mentioned optional embodiments, and anyone can draw other various forms of products under the inspiration of the present invention, but no matter what changes are made in its shape or structure, all fall within the definition of the claims of the present invention. The technical solutions within the scope all fall within the protection scope of the present invention.

Claims (10)

1. An inward-folding hinge mechanism with good supporting effect, comprising a protective cover plate provided with a first outer frame and a second outer frame, characterized in that the first outer frame and the second outer frame are The two outer frames are in a U-shaped structure, and each support arm of the U-shaped structure is provided with an inclined surface on the side facing the protective cover; it also includes a hinge assembly, and the first outer frame and the second outer frame pass through the U-shaped structure. The hinge assembly is connected to form a frame structure, and the hinge assembly drives the first outer frame and the second outer frame to rotate around the same axis and switches the protective cover plate from a planar shape to an overlapping shape; the bending trajectory of the hinge assembly is an arc line , the arc line is tangent to the extension line of the inclined surface; A support plate is hinged between the two arms of the first outer frame and the second outer frame, and the two support plates can be spliced to form a support plane, and the support plane is attached to the surface of the protection cover. 2 . The inward-folding hinge mechanism with good supporting effect according to claim 1 , wherein the two supporting plates are symmetrically arranged with respect to the center line between the first outer frame and the second outer frame, and each The supporting plates are all attached to the surface of the protective cover plate and follow the protective cover plate to rotate. 3 . The inward folding hinge mechanism with good supporting effect according to claim 1 or 2 , wherein the protective cover plate is made of ultra-thin glass or CPI film. 4 . 4. The inward-folding hinge mechanism with good supporting effect according to claim 1, further comprising a first shell bottom plate, a second shell bottom plate and a cover, the first shell bottom plate and the second shell bottom plate are respectively It is connected to the first outer frame and the second outer frame, and the first shell bottom plate and the second shell bottom plate are hingedly connected to the two sides of the cover, and the cover is provided with the hinge assembly and the support plate. lumen. 5. The inward-folding hinge mechanism with good supporting effect according to claim 1, characterized in that it further comprises a shell side plate, the shell side plate is in the shape of a corrugated belt, and the sides of the shell side plate are respectively connected to the on the first outer frame and the second outer frame. 6 . The inward-folding hinge mechanism with good supporting effect according to claim 1 , wherein the hinge assembly comprises a bending channel provided between the first outer frame and the second outer frame, and the bending A number of gears are arranged in the channel, and both sides of the bending channel are provided with driving plates, and the ends of the driving plates are provided with driving teeth meshing with the gears; the two driving plates are respectively slidably arranged on the first Arm ends of the outer frame and the second outer frame. 7 . The inward-folding hinge mechanism with good supporting effect according to claim 6 , wherein the ends of the arms of the first outer frame and the second outer frame are provided with sliding grooves, and the sliding grooves are inside the sliding grooves. 8 . The drive board is assembled. 8. The inward-folding hinge mechanism with good supporting effect according to claim 6, wherein the bending channel comprises a first bending plate and a second bending plate arranged in parallel, the first bending plate The relative movement of the outer frame and the second outer frame drives the bending movement of the first bending plate and the second bending plate. 9 . The inward folding hinge mechanism with good supporting effect according to claim 8 , wherein the first bending plate and the second bending plate are made of flexible materials. 10 . 10 . The inward folding hinge mechanism with good supporting effect according to claim 8 , wherein the two ends of the first bending plate are respectively assembled on the supports of the first outer frame and the second outer frame. 11 . On the arm end, both ends of the second bending plate are respectively assembled on the arm ends of the first outer frame and the second outer frame.