CN111316007B - Bending structure and bending display device - Google Patents

Abstract

A bending structure (1) and a bending display device, the bending structure (1) includes a bendable first flexible board (11), at least two rotating shafts (12) arranged side by side on the first flexible board (11) ), and a bendable second flexible plate (13) arranged on the side of the rotating shaft (12) opposite to the first flexible plate (11). The rotating shaft (12) is flexibly connected with the second flexible board (13); the rotating shaft (12) is provided with a guiding mechanism (14) connected with the second flexible board (13), and the guiding mechanism (14) is arranged on the row of the rotating shaft (12). The cloth direction is slidingly matched with the second flexible plate (13). The gap between the adjacent surfaces of two adjacent rotating shafts (12) gradually increases from the first flexible board (11) side to the second flexible board (13) side, so as to be able to move toward the second flexible board (13) as a whole. ) is bent on one side. When the bending structure (1) is bent, the side of the first flexible plate (11) will not be pulled, and the length can remain unchanged, and at the same time, it is ensured that the flexible display module (2) bonded thereto will not be stretched The damage allows the second flexible board (13) to move relative to the rotating shaft (12) without compressing and stretching on one side of the second flexible board (13), thus ensuring the stability of the structure.

Description

Bending structure and bending display device

technical field

The present invention relates to an overturn connection structure, and more specifically, to a bending structure and a bending display device.

Background technique

At present, the common shafts are: mobile phone shaft (flip or rotating screen mobile phone); notebook computer shaft; portable DVD shaft; LED desk lamp shaft; LCD display screen shaft; GPS and other car bracket shafts, etc.

This type of shaft has a common feature that the arc length of the shaft in the bent state is longer than the length of the shaft in the flattened state. If it is applied to a flexible display device, the display screen will be cracked by force during the bending process, and the display Function fails.

1. The arc length of the existing rotating shaft in the bent state is longer than the length of the rotating shaft in the flattened state. If it is applied to a flexible display device, it will cause the display screen to be cracked by force and the display function will fail.

2. Due to the influence of the structure, the existing shaft cannot be applied to products with extremely small bending radii.

The present invention intends to solve the problem that the flexible screen mobile terminal with the flexible screen arranged outside the mobile terminal needs to deal with the length change caused by the closing and opening of the hinge.

Contents of the invention

The technical problem to be solved by the present invention is to provide an improved bending structure and a bending display device.

The technical solution adopted by the present invention to solve the technical problem is to construct a bending structure, including a bendable first flexible board, at least two rotating shafts arranged side by side on the first flexible board, and a second flexible board that is bendable on the side opposite to the first flexible board;

The rotating shaft is movably connected with the second flexible board;

The rotating shaft is provided with a guiding mechanism connected with the second flexible board, and the guiding mechanism is slidably matched with the second flexible board in the arrangement direction of the rotating shaft;

The gap between adjacent surfaces of two adjacent rotating shafts gradually increases from the side of the first flexible board to the side of the second flexible board, so as to be able to bend toward the side of the second flexible board as a whole.

The present invention also constructs a bending display device, including the bending structure and a flexible display module arranged outside the first flexible board.

The bending structure and the bending display device of the present invention have the following beneficial effects: when the bending structure is bent in the present invention, the side of the first flexible plate will not be pulled, and the length can be kept unchanged. At the same time, it can ensure The flexible display module bonded to it will not be damaged by stretching, so that the second flexible board can move relative to the rotating shaft, but it will not be compressed or stretched on the side of the second flexible board, ensuring the structure of stability.

Further, the difference in the maximum gap between adjacent surfaces of two adjacent rotating shafts can adjust the bending angle and radius correspondingly.

Description of drawings

The present invention will be further described below in conjunction with accompanying drawing and embodiment, in the accompanying drawing:

FIG. 1 is a schematic diagram of a three-dimensional structure of a bending display device in an embodiment of the present invention;

Fig. 2 is a schematic diagram of an exploded state of the bending display device in Fig. 1;

Fig. 3 is an exploded schematic view of the first flexible board and the rotating shaft in Fig. 2;

Fig. 4 is a schematic diagram of the assembly of the first flexible board and the rotating shaft in Fig. 3;

Fig. 5 is a schematic diagram of the assembly of the first flexible board and part of the rotating shaft in Fig. 3;

Fig. 6 is a schematic perspective view of the bending display device in Fig. 1 from the side of the second flexible board;

Fig. 7 is a schematic partial cross-sectional view of the bending display device in Fig. 6 corresponding to the display guide mechanism;

FIG. 8 is a schematic partial cross-sectional view of the bent structure of the bent display device in FIG. 7 after being bent;

Fig. 9 is a schematic diagram of the decomposition of the two rotating shafts arranged side by side in Fig. 3;

Fig. 10 is a schematic partial cross-sectional view of the bending display device in Fig. 6 when correspondingly displaying the anti-twist mechanism;

FIG. 11 is a schematic partial cross-sectional view of the bent structure of the bent display device in FIG. 10 after being bent;

FIG. 12 is a schematic diagram of the overall appearance of the bent structure of the bent display device in FIG. 1 after being bent.

Detailed ways

In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described in detail with reference to the accompanying drawings.

As shown in FIG. 1 to FIG. 5 , a bending display device in a preferred embodiment of the present invention includes a bending structure 1 and a flexible display module 2. The bending structure 1 includes a bendable first flexible board 11 arranged side by side on At least two rotating shafts 12 on the first flexible board 11 , and a bendable second flexible board 13 disposed on the side of the rotating shafts 12 opposite to the first flexible board 11 . The flexible display module 2 is arranged on the outside of the first flexible board 11. As the display surface of the display device, the flexible display module 2 is usually bonded on the outside of the first flexible board 11. In other embodiments, the flexible display module 2 is also It can be supported by the first shell 16 and the second shell 17 , cover the outside of the first flexible board 11 , or be locked and connected with the first flexible board 11 through a connector.

As shown in Figure 6, the rotating shaft 12 is movably connected with the second flexible board 13, and the rotating shaft 12 is provided with a guiding mechanism 14 connected with the second flexible board 13, and the guiding mechanism 14 is aligned with the second flexible board 13 in the arrangement direction of the rotating shaft 12. Slip fit.

The gap between the adjacent surfaces of two adjacent rotating shafts 12 gradually increases from the side of the first flexible board 11 to the side of the second flexible board 13 so as to be able to bend toward the side of the second flexible board 13 as a whole.

As shown in FIG. 7 and FIG. 8, when the bending structure 1 is bent, the side of the first flexible board 11 will not be pulled, and the length can remain unchanged, ensuring that the flexible display module 2 bonded thereto will not be damaged. Damaged by stretching. When the second flexible board 13 is bent, since the bending radius of the second flexible board 13 is smaller than the bending radius of the first flexible board 11, the second flexible board 13 will slide relative to the guide mechanism 14, so that the second flexible board 13 Relative movement with the rotating shaft 12 does not cause compression and tension on the side of the second flexible board 13, which ensures the stability of the structure.

In the process of bending toward the second flexible board 13, the adjacent surfaces of the two adjacent rotating shafts 12 will gradually become smaller on the side close to the second flexible board 13 until the adjacent surfaces of the two adjacent rotating shafts 12 Stop bending when you are close to touching each other. When it is bent toward the second flexible board 11 and resets, the adjacent surfaces of the two adjacent rotating shafts 12 will gradually become larger near the side of the second flexible board 13 .

Generally, the first flexible board 11 and the second flexible board 13 can be made of titanium alloy, stainless steel, carbon fiber composite material, Kevlar and other materials that can be bent and have high strength.

The number of rotating shafts 12 arranged side by side can be two or more, and the number of rotating shafts 12 and the distance between the adjacent surfaces of two adjacent rotating shafts 12 can be set according to the curvature of the bend, the angle of bending, etc. Maximum clearance. The greater the number of rotating shafts 12, the larger the bending surface formed during bending, the finer the bending, the larger the maximum gap between the adjacent surfaces of two adjacent rotating shafts 12, and the greater the bending angle of the bending structure 1. The larger the value, the smaller the bending radius.

As shown in Figure 9, the rotating shaft 12 includes a rotating main body 121. The cross section of the rotating main body 121 is trapezoidal. After being arranged side by side, the gap generated between adjacent rotating shafts 12, the gap near the second flexible plate 13 side is larger than that near the first flexible board 13. The gap on one side of the flexible board 11. In other embodiments, under the condition of ensuring the gradual change of the gap, the transition between the side of the rotating shaft 12 close to the second flexible board 13 and the side close to the first flexible board 11 can also be other smooth transitions.

The end of the rotating shaft 12 is provided with a protruding column 124 , and an end cap 125 is mounted on the protruding post 124 , and the end caps 125 on adjacent rotating shafts 12 are staggered in the axial direction of the rotating shaft 12 . The end caps 125 can play an aesthetic role, avoiding seeing the internal structure of the rotating shaft 12 directly, and the staggered end caps 125 can avoid mutual interference during the bending process of the bending structure.

As shown in FIG. 5 , the first flexible board 11 is provided with a locking hole 111 , and the threaded member 112 passes through the locking hole 111 to connect with the rotating shaft 12 to install the rotating shaft 12 on the first flexible board 11 .

The first flexible board 11 has a bent portion 113 bent toward the second flexible board 13 . Lock holes 111 are formed on the bent portion 113 .

The locking hole 111 is disposed on the bending portion 113 , so as not to occupy the space on the surface of the first flexible board 11 , so that the flexible display module 2 and the outer surface of the first flexible board 11 can fit together more smoothly.

As shown in FIG. 6 , the second flexible board 13 is provided with a guide groove 131 arranged along the arrangement direction of the rotating shaft 12 , and the guiding mechanism 14 includes a mechanism for passing through the guiding groove 131 to lock the second flexible board 13 to the rotating shaft 12 . The locking part 141 is slidably matched with the second flexible board 13 , and when the bending structure 1 is bent, relative sliding can occur between the locking part 141 and the second flexible board 13 .

The second flexible board 13 is provided with a plurality of guide grooves 131 along the arrangement direction of the rotating shafts 12 , and each guiding groove 131 corresponds to one or more rotating shafts 12 . There is a gap between the locking member 141 and the end of the guide groove 131 near the middle of the arranged rotating shaft 12 , which reserves a space for the locking member 141 to move when it is bent.

The size of the gap between the locking member 141 and the end of the guide groove 131 near the middle of the arranged rotating shaft 12 can be set according to the bending angle requirement, and it only needs to meet the avoidance space required by the locking member 141 during bending. The number of sections of the guide groove 131 can be set according to the number of arranged rotating shafts 12 , and can also be directly one guide groove 131 , or can be two sections or other numbers of guide grooves 131 .

As shown in FIG. 6 to FIG. 8 , a damping member 142 for increasing the friction between the locking member 141 and the second flexible board 13 is provided between the locking member 141 and the second flexible board 13 , and the damping member 142 can increase the second flexibility. The frictional force between the plate 13 and the locking member 141 can maintain a specific bending position after bending.

Preferably, the damping member 142 can be provided on one or both sides of the two opposite sides of the second flexible board 13 , the damping member 142 is fixed on the locking member 141 and slides relative to the second flexible board 13 with the locking member 141 . Generally, the damping element 142 can be in the form of a sheet or a block, and a locking hole is opened in the middle of the damping element 142 for the locking element 141 to pass through.

When the number of rotating shafts 12 is three or more than three, the second flexible board 13 is fixedly connected to one of the rotating shafts 12 arranged in the middle position, so that the second flexible board 13 remains in contact with the rotating shaft in the middle position during the bending process. 12 positioning. After being fixed, the position of the second flexible board 13 can be defined, preventing the position from being affected by displacement in the arrangement direction of the rotating shaft 12 when sliding with the locking member 141 .

After the rotating shaft 12 in the middle position is fixedly connected with the second flexible board 13, the middle part of the second flexible board 13 will not move when it is bent, so that the second flexible board 13, the rotating shaft 12 and the locking member 141 The location of the force is reduced, making the position of the second flexible board 13 more stable.

Preferably, each guide groove 131 corresponds to two or more rotating shafts 12 , and each guiding groove 131 is staggered in the axial direction of the rotating shaft 12 . One guide groove 131 corresponds to a plurality of rotating shafts 12, so that the number of guiding grooves 131 can be reduced. At the same time, the guide grooves 131 are staggered in the axial direction of the rotating shaft 12, which can balance the force of the second flexible board 13, so that the second flexible board 13 Movement is more stable.

Furthermore, each rotating shaft 12 is corresponding to a guide groove 131, which can prevent the second flexible board 13 from moving relative to the rotating shaft 12 and the locking member 141 when the force is unbalanced in a local position, and avoid damage to the second flexible board 13 .

In some embodiments, the bending structure 1 further includes a stopper mechanism 15 that limits the maximum angles of the bending structure 1 when it is bent in two different directions, so that the bending structure 1 can be bent within a specific angle range , to prevent the bending structure 1 from excessive bending.

The stop mechanism 15 includes two positioning grooves 151 provided on the second flexible board 13 and stop portions 152 respectively provided on the two outermost rotating shafts 12 .

The two positioning slots 151 are arranged along the arrangement direction of the rotating shafts 12, and are respectively close to the two outermost rotating shafts 12. 12 corresponds to each other, and the two stoppers 152 are snapped into the two positioning grooves 151 respectively.

When the bending structure 1 is bent to the maximum angle toward the first flexible board 11, the two stoppers 152 respectively abut against the opposite ends of the two positioning grooves 151, and when the bending structure 1 bends toward the second flexible board, When one side of 13 is bent to the maximum angle, the two stoppers 152 respectively abut against the opposite ends of the two positioning grooves 151, and when bending, the stoppers 152 slide in the positioning grooves 151 to limit the bend. fold range. After the bending range is limited, damage to the flexible display module 2 during reverse bending can be effectively avoided, thereby ensuring that the flexible display module 2 functions normally.

Furthermore, the first fixing seat 122 and the second fixing seat 123 are arranged on the two outermost rotating shafts 12 respectively, and the bending structure 1 also includes The first housing 16 and the second housing 17 .

The first flexible board 11 is connected to the first shell 16 and the second shell 17, and the two stoppers 152 respectively abut against the first shell 16 and the second shell 17. When bending, the two stoppers 152 can keep respectively cooperating with the first housing 16 and the second housing 17 to ensure the positioning, and by turning the first housing 16 and the second housing 17 to drive the rotation of the rotating shaft 12 in the middle to generate bending.

The first shell 16 and the second shell 17 can fix and position the two sides of the bending structure 1 , and when bending, the first shell 16 and the second shell 17 play a role of supporting the two ends. In other embodiments, the first housing 16 and the second housing 17 can also be omitted, so that the bending structure 1 formed by the rotating shaft 12 in the middle can be bent as a whole.

As shown in FIG. 9 to FIG. 11 , in some embodiments, an anti-twist mechanism 18 is provided between adjacent rotating shafts 12 to prevent lateral twisting and misalignment of two adjacent rotating shafts 12, so that the adjacent rotating shafts 12 can bend Keep parallel during the folding process to avoid uneven stretching force on the first flexible board 11 and one side of the flexible display module 2 after twisting or misalignment.

The anti-twist mechanism 18 includes positioning holes 181 and positioning protrusions 182 respectively arranged on the opposite sides of the two adjacent rotating shafts 12. The positioning protrusions 182 are inserted into the positioning holes 181 and can move toward the positioning holes 181 along with the rotating shafts 12 where they are located. The two sides swing to keep the adjacent rotating shafts 12 in a parallel state when they are bent.

When the length of the rotating shaft 12 is longer, the two ends of the adjacent rotating shafts 12 are provided with positioning holes 181 and positioning protrusions 182 that cooperate with each other. Preferably, a bevel 1821 is provided on the side of the positioning protrusion 182 close to the first flexible board 11, and after being bent toward the side of the second flexible board 13, the bevel 1821 can abut against the side wall of the positioning hole 181, ensuring Accurate positioning can also increase the relative rotation angle of two adjacent rotating shafts 12 during bending, correspondingly increasing the bending angle of the bending structure 1 .

In other embodiments, the anti-twist mechanism 18 may also include components such as connecting rods connected between two adjacent rotating shafts 12, and when the adjacent rotating shafts 12 rotate, the adjacent rotating shafts 12 are kept in a parallel state to prevent Bending structure 1 is twisted and dislocated.

Further, the rotating shaft 12 is fixedly connected with the first flexible board 11, so that the first flexible board 11 connects the rotating shafts 12, and when bending, the first flexible board 11 and the flexible display module 2 will not be pulled, thereby avoiding The flexible display module 2 and other components on the side are damaged.

The flexible display module 2 is arranged on the outside of the first flexible board 11 as the display surface of the display device. Under normal circumstances, the flexible display module 2 can be a plane. Of course, the flexible display module 2 can also be a flat surface corresponding to the bending structure 1. The sections have curved surfaces at an angle. When the display is to be bent, the whole can be bent toward the side of the second flexible board 13 , and the part of the flexible display module 2 corresponding to the bending structure 1 will be bent.

In other embodiments, the bending structure 1 can be applied to other connecting structures that need to be bent.

It can be understood that the above technical features can be used in any combination without limitation.

The above is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the description of the present invention and the contents of the accompanying drawings, or directly or indirectly used in other related technologies fields, all of which are equally included in the scope of patent protection of the present invention.

Claims (6)

1. A bending structure, characterized in that it comprises a bendable first flexible board (11), at least two rotating shafts (12) arranged side by side on said first flexible board (11), and arranged on said first flexible board (11). A second flexible plate (13) that is bendable on the side opposite to the first flexible plate (11) of the rotating shaft (12); The rotating shaft (12) is movably connected with the second flexible board (13); The rotating shaft (12) is provided with a guiding mechanism (14) connected with the second flexible plate (13), and the guiding mechanism (14) is aligned with the second flexible plate (13) in the arrangement direction of the rotating shaft (12). The flexible plate (13) is sliding fit; The gap between the adjacent surfaces of two adjacent rotating shafts (12) gradually increases from the first flexible board (11) side to the second flexible board (13) side, so as to be able to move toward the said second flexible board (13) as a whole. One side of the second flexible board (13) is bent; The second flexible board (13) is provided with a guide groove (131) arranged along the arrangement direction of the rotating shaft (12), and the guide mechanism (14) includes passing through the guide groove (131) to guide the The second flexible plate (13) is locked to the locking member (141) on the rotating shaft (12), and the locking member (141) is slidingly fitted with the second flexible plate (13); The second flexible board (13) is provided with at least two sections of guide grooves (131) arranged along the arrangement direction of the rotating shafts (12), and each of the guiding grooves (131) corresponds to at least one of the rotating shafts ( 12), there is a gap between the lock piece (141) and the guide groove (131) close to the end of the middle position of the rotating shaft (12), which is reserved for the lock piece (141) The activity space when bending out; The rotating shaft (12) includes a rotating main body (121), the section of the rotating main body (121) is trapezoidal, and after being arranged side by side, the gap generated between adjacent rotating shafts (12) is close to the second flexible plate ( 13) The gap on one side is larger than the gap on the side close to the first flexible board (11). 2. The bending structure according to claim 1, characterized in that, each of the guide grooves (131) corresponds to two or more of the rotating shafts (12), and each of the guide grooves (131) is The axial directions of the rotating shafts (12) are staggered. 3. The bending structure according to claim 1, characterized in that, the bending structure (1) further includes angles that limit the maximum bending angles of the bending structure (1) in two different directions. A stopper mechanism (15), the stopper mechanism (15) includes two positioning grooves (151) arranged on the second flexible board (13) and the two rotating shafts (12) arranged on the outermost sides respectively on the stopper (152); The two positioning grooves (151) are arranged along the arrangement direction of the rotating shafts (12), and are respectively close to the two rotating shafts (12) arranged on the outermost side, and the two positioning grooves (151) The opposite ends respectively correspond to the positions of the two outermost rotating shafts (12), and the two stoppers (152) are snapped into the two positioning grooves (151) respectively. 4. The bending structure according to any one of claims 1 to 2, characterized in that, there is a device between adjacent rotating shafts (12) to prevent lateral twisting and misalignment of two adjacent rotating shafts (12). The anti-twist mechanism (18), the anti-twist mechanism (18) includes positioning holes (181) and positioning protrusions (182) respectively provided on the opposite sides of the two adjacent rotating shafts (12), and the The positioning protrusion (182) is inserted into the positioning hole (181), and can swing to both sides of the positioning hole (181) along with the rotating shaft (12) where it is located. 5. The bending structure according to any one of claims 1 to 2, characterized in that, the end of the rotating shaft (12) is provided with a boss (124), and the boss (124) is installed with an end The cover (125), the end cover (125) adjacent to the rotating shaft (12) is staggered in the axial direction of the rotating shaft (12). 6. A bending display device, characterized in that it comprises the bending structure (1) according to any one of claims 1 to 5 and a flexible display module ( 2).

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