CN110762111A - A symmetrical opening and closing biaxial inward folding hinge structure suitable for display devices - Google Patents

Abstract

The invention discloses a symmetrical opening and closing type double-shaft inward folding hinge structure suitable for display equipment, which belongs to the technical field of flexible display equipment and comprises a hinge groove body, wherein double-shaft linkage assemblies are arranged at two ends of the hinge groove body, two linkage plates are symmetrically assembled at the same end of the hinge groove body, and the two linkage plates are in linkage motion through the double-shaft linkage assemblies to be opened and closed symmetrically; the double-shaft linkage assembly comprises a connecting piece, the connecting piece is arranged at the end part of the hinge groove body in a sliding mode and two linkage plates located at the same end part are assembled with the connecting piece, so that the display equipment can be opened and closed symmetrically, and the use requirements of users are met.

Description

A symmetrical opening and closing biaxial inward folding hinge structure suitable for display devices

technical field

The invention belongs to the technical field of flexible display devices, and in particular, relates to a symmetrical opening and closing type biaxial inward folding hinge structure suitable for display devices.

Background technique

Flexible display devices have the advantages of impact resistance, light weight, and easy portability. They have functions and user experience advantages that traditional displays cannot achieve. When users use flexible devices, the protective cover will prevent the flexible display from being subjected to external impact forces. Provides first-round protection. Since the cover plate can not only directly play a protective role, but also directly affect the appearance of the flexible display screen, the cover plate is a very important factor for the flexible display 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 curved screen mobile phones with a fixed curvature.

At present, different manufacturers of foldable displays choose CPI film as the 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 the PI itself is yellow. In order to be suitable for the glass cover, the de-yellowing CPI is used as the cover. 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.

In view of the shortcomings of CPI material, at present, various manufacturers replace it with ultra-thin glass with high surface strength and no relaxation, elongation and crease. The material itself has good self-healing ability. After long-term repeated bending, The original flatness can still be restored, 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 the above-mentioned prior art, ultra-thin glass or CPI material is used as the protective cover. During the opening and closing process of the display device, two sides of the display device are often opened and closed asynchronously. The force of thin glass or CPI material is uneven, resulting in damage to ultra-thin glass or creases of CPI material, which greatly reduces the service life of display devices; at the same time, existing display devices cannot meet the needs of users. requirements, it is inconvenient to operate in the actual use process.

SUMMARY OF THE INVENTION

In view of this, in order to solve the above-mentioned problems existing in the prior art, the purpose of the present invention is to provide a symmetrical opening and closing double-axis inward folding hinge structure suitable for display devices, so as to achieve symmetrical opening and closing operations of the display device and meet the needs of users. Purpose.

The technical solution adopted in the present invention is: a symmetrical opening and closing type double-axis inner folding hinge structure suitable for display equipment, comprising a hinge groove body, two ends of the hinge groove body are provided with double-axis linkage components, and the hinge The same end of the slot body is symmetrically equipped with two linkage plates, and the two linkage plates are linked and moved by a biaxial linkage assembly to perform symmetrical opening and closing; the biaxial linkage assembly includes a connecting piece, and the connecting piece is slidably arranged on the hinge groove body The two linkage plates at the same end are assembled with the connector.

Further, limit groove groups are symmetrically arranged at the same end of the hinge groove body, and limit column groups corresponding to the limit groove groups are arranged at the ends of each linkage plate, and the limit groove groups are opposite to the limit column groups. The movement of the linkage plate is limited, and then the movement of the linkage plate is limited.

Further, the limiting column group includes a first limiting column and a second limiting column, and the limiting groove group includes a first limiting groove and a second limiting groove; the first limiting column is mounted on the first limiting column. The second limiting post is mounted in the second limiting slot and can rotate and move in the second limiting slot.

Further, a third limit slot is symmetrically opened on the connecting piece, the second limit post extends into the third limit slot through the second limit slot, and the third limit slot is connected to the first limit slot. The grooves are arranged in parallel, so that when the movement of the second limiting column is restricted in the second limiting groove, the connecting piece can be linked, and then the movement of the connecting piece can link the two linkage plates to produce a symmetrical opening and closing movement.

Further, the first limit slot and the third limit slot are both linear, and the second limit slot is arc-shaped, so as to achieve the first limit slot, the second limit slot and the third limit slot. The maximum working distance opening and closing of the two linkage plates can be realized under the action of the limit.

Further, an end portion of the hinge groove body is provided with an accommodating groove, and the connecting piece is assembled in the accommodating groove and a cover body is disposed in the accommodating groove, so as to facilitate the assembly of the connecting piece.

Further, the accommodating groove is provided with a sliding groove and the sliding groove is located on the symmetrical line of the two linkage plates, and the connecting piece is provided with a sliding block matched with the sliding groove to limit the movement direction of the connecting piece.

Further, it also includes support plates symmetrically arranged on both sides of the hinge groove body, a living hinge is provided between one side of the support plate and the long side wall of the hinge groove body, and two ends of the other side are provided. Both are hingedly connected with the linkage plate, and the linkage plate moves in conjunction with the support plate through the movable hinge, so as to maximize the radius of curvature R through the linkage movement of the support plate, thereby reducing the loss of the protective cover.

Further, the living hinge includes at least one hinged gusset plate arranged on the support plate, a clamping opening is formed between the hinged gusset plate and the surface of the support plate, and the long side wall of the hinge groove body is provided with A hanging hole corresponding to the clip opening is equipped with the hinged gusset plate that can rotate and move relative to it, so that the support plate can be opened symmetrically under the linkage action of the linkage plate through the living hinge. Combine sports.

Further, it also includes a bearing plate symmetrically arranged on both sides of the hinge groove body, the two sides of the bearing plate are respectively assembled on the corresponding linkage plates, and the bearing plate and the supporting plate on the side where the bearing plate is located can be assembled. A flat surface is provided to provide a good and stable support for the protective cover through the carrier plate.

The beneficial effects of the present invention are:

1. Using the symmetrical opening and closing double-axis inward folding hinge structure suitable for display devices disclosed in the present invention, by symmetrically arranging the linkage plates on both sides of the hinge groove body, the linkage plates are subjected to the double-axis linkage assembly during the opening and closing movement. In order to realize the symmetrical opening and closing operation of the display device, and at the same time, under the action of the connector, the linkage plates on both sides of the same end can be smoothly linked.

2. Using the symmetrical opening and closing double-axis inward-folding hinge structure suitable for display equipment disclosed in the present invention, its connecting piece generates a linked movement with the movement of the linkage plate, and thereby restricts the synchronous movement of the two linkage plates, which can The distance is maximized, so that the tolerance problem during processing can be solved. At the same time, through the simple binary structure design, the processing and manufacturing process is simple, and the production cost is reduced.

Description of drawings

1 is a schematic diagram of the overall structure of a symmetrical opening and closing biaxial inward folding hinge structure suitable for a display device provided by the present invention;

2 is a schematic diagram of the internal structure of a symmetrical opening and closing biaxial inward folding hinge structure suitable for a display device provided by the present invention;

Fig. 3 is the partial structure schematic diagram of Fig. 2;

4 is a schematic diagram of the assembly structure of the linkage plate, the connecting piece and the hinge groove body in the symmetrical opening and closing type biaxial inward folding hinge structure suitable for the display device provided by the present invention;

5 is a schematic structural diagram of a linkage plate in a symmetrical opening and closing biaxial inward folding hinge structure suitable for a display device provided by the present invention;

6 is a schematic structural diagram of a first viewing angle of a hinge groove body in a symmetrical open-close biaxial inward-folding hinge structure suitable for a display device provided by the present invention;

7 is a schematic structural diagram of a second viewing angle of a hinge groove body in a symmetrical opening and closing type biaxial inward folding hinge structure suitable for a display device provided by the present invention;

8 is a schematic structural diagram of a connector in a symmetrical open-close biaxial inward-folding hinge structure suitable for a display device provided by the present invention;

9 is a schematic structural diagram of a hinge groove body in a symmetrical open-close biaxial inward-folding hinge structure suitable for a display device provided by the present invention;

The attached drawings are marked as follows:

1-folding shell, 2-hinge groove, 3-bearing plate, 4-supporting plate, 5-linkage plate, 6-cover, 7-hinge plate, 8-connector, 9-second limit post, 10-hanging rod, 11-first limit post, 12-first limit slot, 13-second limit slot, 14-chute, 15-third limit slot, 16-slider, 17-accommodation groove.

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, the specific meanings of the above terms in the present invention can be understood under specific circumstances; the accompanying drawings in the embodiments are used to clearly and completely describe the technical solutions in the embodiments of the present invention. The described embodiments are some, but not all, of the embodiments of the present invention. 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, a symmetrical opening and closing biaxial inward-folding hinge structure suitable for a display device is specifically provided, including a hinge groove body 2 . The hinge groove body 2 is used as the middle connecting piece of the left and right parts to realize the opening and closing operation of the left and right parts relative to the hinge groove body 2. Based on the conventional design of the display device, in this embodiment, the hinge groove body 2 is a rectangular groove. The long side of the hinge groove body 2 is the side part, and the short side is the end part.

As shown in Figures 2 and 3, both ends of the hinge groove body 2 are provided with biaxial linkage assemblies, and the same end of the hinge groove body 2 is symmetrically equipped with two linkage plates 5, two linkage plates 5. The two-axis linkage components are linked and moved to perform symmetrical opening and closing. When fully unfolded, the two linkage plates 5 are in a horizontal state; when fully closed, the two linkage plates 5 are in a state of overlapping each other.

The above two-axis linkage assembly is realized by the following structure:

As shown in FIG. 4 , it includes a connecting piece 8 . The connecting piece 8 is slidably arranged at the end of the hinge groove body 2 and the two linkage plates 5 located at the same end are assembled with the connecting piece 8 . In order to facilitate assembly and provide the working distance of the hinge to the greatest extent, the connecting piece 8 is designed. The connecting piece 8 is located in the accommodating groove 17 at the end of the hinge groove body 2 , and a cover body 6 is arranged on the upper part of the connecting piece 8 . The cover body 6 provides good protection for the lower double-shaft linkage unit.

As shown in FIGS. 7 and 9 , the accommodating groove 17 is provided with a chute 14 and the longitudinal direction of the chute 14 is located on the symmetry line of the two linkage plates 5 . As shown in FIGS. 7 and 8 , the connecting piece 8 There is a slider 16 matching with the chute 14 , and the connecting piece 8 can move in the direction of the symmetry line of the two linkage plates 5 at the same end through mutual restraint between the slider 16 and the chute 14 . In order to further enhance the connecting plate to have more stable restricting motion when it is linked, there are raised sliding blocks 16 in the middle and both ends of the connecting plate, and a sliding groove 14 is correspondingly opened at the bottom of the accommodating groove 17 .

As shown in FIGS. 5 and 6 , the same end of the hinge groove body 2 is symmetrically provided with a limit groove group, and the ends of the two linkage plates 5 at the end are provided with limit grooves corresponding to the limit groove group. bit column group. Wherein, the limit column group includes a first limit column 11 and a second limit column 9, and the limit slot group includes a first limit slot 12 and a second limit slot 13; the first limit column 11 is installed in The second limiting post 9 is installed in the second limiting slot 13 and can rotate and move in the second limiting slot 13 .

As shown in FIG. 4 and FIG. 8 , a third limit slot 15 is symmetrically opened on the connector 8 , and the second limit post 9 extends through the second limit slot 13 into the third limit slot 15 , The second limit post 9 can also rotate and move in the third limit slot 15 , and the third limit slot 15 is arranged in parallel with the first limit slot 12 .

The opening and closing of the equipment is that the second limit post 9 of the linkage plate 5 is in a symmetrical opening and closing movement due to the movement restriction of the third limit groove 15 of the connecting piece 8 and the second limit groove 13 of the hinge groove 2 . At this time, the movement of the connecting piece 8 is restricted by the sliding block 16 and the sliding groove 14, and its specific movement process is as follows:

When any one linkage plate 5 or two linkage plates 5 at the same end are pulled at the same time, when the second limit post 9 on the linkage plate 5 moves in the second limit slot 13, the first limit post 11 It moves and rotates in the first limit slot 12 , and at the same time, the second limit post 9 also moves in the third limit slot 15 and promotes the linkage of the connecting piece 8 , and the connecting piece 8 is constrained to displace in the accommodating slot 17 . , so as to realize the symmetrical opening and closing of the two linkage plates 5 through the cooperation of the above-mentioned limit constraints.

Example 2

As shown in FIG. 2 and FIG. 3 , the symmetrical opening and closing type biaxial inward folding hinge structure suitable for display devices disclosed in Embodiment 1 is put into practical application, which also includes supports symmetrically arranged on both sides of the hinge groove body 2 Plate 4, a movable hinge is provided between one side of the support plate 4 and the long side wall of the hinge groove body 2, and both ends of the other side are hingedly connected with the linkage plate 5, and the linkage plate 5 Through the movement of the supporting plate 4 linked by the movable hinge, when the linkage plate 5 is opened and closed symmetrically, the supporting plates 4 on both sides can also be synchronized to open and close symmetrically, so as to provide a more uniform force to the protective cover.

The living hinge includes three hinged gussets 7 arranged on the support plate 4 , and a clamping opening is formed between the hinged gussets 7 and the surface of the support plate 4 , and the long side wall of the hinge groove body 2 is on the long side wall. A hanging hole corresponding to the clamping opening is provided, and the hinged gusset 7 which can be rotated and moved relative to the hanging hole is assembled in the hanging hole. Preferably, in order to improve the relative movement smoothness between the hanging hole and the clip, the side of the hanging hole facing the hinged gusset 7 is set as a cylindrical hanging rod 10 to reduce the relative hanging of the hinged gusset 7 Frictional resistance to hole movement.

It also includes a folding shell 1 symmetrically arranged on both sides of the hinge groove body 2, the two sides of the folding shell 1 are respectively assembled on the corresponding linkage plate 5 through fastening screws, and the folding shell 1 is equipped with a bearing plate. 3. The carrier plate 3 and the supporting plate 4 on the side thereof can be assembled into a plane, and the supporting plane required for the cover body can be assembled by the supporting plate 3 and the supporting plate 4, and the protective cover body is covered on the supporting plane. Preferably, the side of the support plate 4 facing the support plate 3 is made into a cylindrical shape, so that when the support plate 4 rotates slightly relative to the support plate 3, the support plate 4 and the support plate 3 can be smoothly transitioned, and no Damage to the protective cover.

Through the living hinge, the supporting plate 4 can be linked to move under the action of the linkage plate 5, and at the same time, it can satisfy the requirement that when the two supporting plates 4 are in the folded state, an outward expansion shape is formed between the lower ends of the two supporting plates 4. The expanded shape can maximize the radius of curvature R, thereby reducing the loss of the protective cover.

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. A symmetrical opening and closing type double-shaft inward folding hinge structure suitable for display equipment comprises a hinge groove body and is characterized in that double-shaft linkage assemblies are arranged at two ends of the hinge groove body, two linkage plates are symmetrically assembled at the same end of the hinge groove body, and the two linkage plates are in linkage motion through the double-shaft linkage assemblies to be opened and closed symmetrically; the double-shaft linkage assembly comprises a connecting piece, the connecting piece is arranged at the end part of the hinge groove body in a sliding mode, and two linkage plates located at the same end part are assembled with the connecting piece.

2. The symmetrical opening and closing type double-shaft inward folding hinge structure suitable for the display device as claimed in claim 1, wherein the same end of the hinge groove body is symmetrically provided with a limit groove group, and the end of each linkage plate is provided with a limit column group correspondingly matched with the limit groove group.

3. The symmetrical opening-closing type dual-axis inward folding hinge structure suitable for the display device according to claim 2, wherein the limit post group comprises a first limit post and a second limit post, and the limit groove group comprises a first limit groove and a second limit groove; the first limiting column is arranged in the first limiting groove and can rotate and move in the first limiting groove, and the second limiting column is arranged in the second limiting groove and can rotate and move in the second limiting groove.

4. The symmetric foldable dual-axis inward-folding hinge structure of claim 3, wherein the connecting member has third limiting grooves symmetrically formed thereon, the second limiting posts extend into the third limiting grooves through the second limiting grooves, and the third limiting grooves are parallel to the first limiting grooves.

5. The symmetric opening-closing type dual-axis inward folding hinge structure applicable to display devices of claim 4, wherein the first limiting groove and the third limiting groove are both linear, and the second limiting groove is arc-shaped.

6. The symmetrical opening-closing type biaxial in-folding hinge structure for display device according to claim 1, wherein the end of the hinge groove body is provided with a receiving groove in which the connecting member is fitted and a cover body is provided.

7. The hinge structure of claim 6, wherein the receiving slot has a sliding slot on a symmetry line of the two linkage plates, and the connecting member has a sliding block matching with the sliding slot.

8. The symmetrical opening-closing type double-shaft inward folding hinge structure suitable for the display device as claimed in claim 1, further comprising support plates symmetrically arranged at two sides of the hinge groove body, wherein a movable hinge is arranged between one side of each support plate and the long side wall of the hinge groove body, two ends of the other side of each support plate are hinged to the linkage plate, and the linkage plate is linked with the support plates to move through the movable hinge.

9. The symmetrical opening-closing type dual-axis inward folding hinge structure applicable to display devices as claimed in claim 8, wherein the movable hinge comprises at least one hinged buckle plate arranged on the support plate, a clamping opening is formed between the hinged buckle plate and the surface of the support plate, a hanging hole correspondingly matched with the clamping opening is arranged on the long side wall of the hinge groove body, and the hinged buckle plate which can rotate and move relative to the hanging hole is assembled in the hanging hole.

10. The symmetrical opening-closing type double-shaft inward folding hinge structure applicable to the display device of claim 8, further comprising bearing plates symmetrically arranged on two sides of the hinge groove body, wherein two sides of each bearing plate are respectively assembled on the corresponding linkage plate, and the bearing plates and the supporting plate on one side where the bearing plates are arranged can be spliced into a plane.

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