CN213847328U

CN213847328U - Folding screen device

Info

Publication number: CN213847328U
Application number: CN202121506724.5U
Authority: CN
Inventors: 刘波
Original assignee: Honor Device Co Ltd
Current assignee: Honor Device Co Ltd
Priority date: 2021-07-05
Filing date: 2021-07-05
Publication date: 2021-07-30
Anticipated expiration: 2031-07-05

Abstract

The present application relates to a folding screen device. The folding screen device comprises two frame bodies, a rotating shaft assembly and an electric connecting line, wherein the rotating shaft assembly is hinged with the two frame bodies; the two frame bodies can rotate around the rotating shaft of the rotating shaft assembly to be folded or unfolded, and accommodating cavities are formed in the two frame bodies; the electric connecting line is fixed on the rotating shaft assembly and is fixed on the two frame bodies; at least part of the electric connecting wire is accommodated in the accommodating cavity; the holding cavity of at least one frame body is provided with a first traction limiting part, and the first traction limiting part protrudes towards the direction of the holding cavity so as to guide the electric connection wire to be positioned in the bending form of the holding cavity. The utility model provides a folding screen equipment plays important effect to the guide and the control of electric connection line bending process appearance through setting up the first spacing portion of pulling. After the electric connecting wire is continuously stretched and bent for several times, the electric connecting wire can form bending direction memory, and finally the electric connecting wire can keep the dynamic bending deformation consistency in the whole machine for a long time.

Description

Folding screen device

Technical Field

The application relates to the technical field of electronic equipment, in particular to folding screen equipment.

Background

At present, the screen display effect of electronic equipment such as mobile phones and the like is more and more emphasized. However, the size of the mobile phone limits the screen size.

In order to realize a larger screen area on a smaller mobile phone, the mobile phone may adopt a folding structure. Specifically, a cellular phone generally includes two bodies relatively rotatable and foldable about a rotation axis, and a flexible screen simultaneously covers surfaces of the two bodies. When the two main bodies rotate around the middle rotating shaft to be opened, the flexible screen is in an unfolded state and has a large display area. When the two main bodies are rotated and folded around the middle rotating shaft, the size of the mobile phone is small, and the flexible screen is in a folded state. Electronic elements are arranged inside the two main bodies, and electric connecting wires (such as Flexible Printed Circuit (FPC)) cross over two sides of the rotating shaft and connect the electronic elements to realize different functions of the mobile phone.

However, the current FPC has a long redundant length at different angles of the whole machine, but the redundant space in the thickness direction of the whole machine is limited, and after the whole machine is repeatedly bent, the FPC may be damaged and broken due to inconsistent process forms, abrasion and intermediate form jump, so that the whole machine fails.

SUMMERY OF THE UTILITY MODEL

The application provides a folding screen device, and aims to solve the problem that after the whole device is repeatedly bent, an electric connecting wire is damaged and broken due to inconsistent process forms, abrasion and intermediate form jumping, and further the whole device breaks down.

The application provides a folding screen device, which comprises two frame bodies, a rotating shaft assembly and an electric connecting line, wherein the rotating shaft assembly is hinged with the two frame bodies;

the two frame bodies can rotate around the rotating shaft of the rotating shaft assembly to be folded or unfolded, and accommodating cavities are formed in the two frame bodies;

the middle part of the electric connecting line is fixed on the rotating shaft assembly, and two sides of the electric connecting line are respectively fixed on the two frame bodies; at least part of the electric connecting wire is accommodated in the accommodating cavity;

at least one the holding intracavity of framework is provided with first spacing portion of pulling, first spacing portion of pulling orientation the direction of holding the chamber is protruding to the guide electric connection line is located the form of buckling of holding the intracavity.

The utility model provides a folding screen equipment plays important effect to the guide and the control of electric connection line bending process appearance through setting up the first spacing portion of pulling. After the electric connecting wire is continuously stretched and bent for several times, the electric connecting wire can form bending direction memory, finally the electric connecting wire can keep dynamic bending deformation consistency in the whole machine for a long time, the problems of inconsistent directions, jumping and small-radius bending of the electric connecting wire in the bending process are avoided, and the reliability of the electric connecting wire and the reliability of the folding screen device are improved.

In a possible embodiment, the first traction limiting portion is a circular arc-shaped protrusion along the first direction of the frame body, so that the electrical connection line can be smoothly attached without being damaged or scratched by a sharp corner or the like.

In one possible embodiment, the first draw stopper is elongated in the second direction of the frame body, so that the bending deformation of the electrical connection wire having a certain width can be sufficiently guided.

In one possible embodiment, the first direction is a thickness direction of the frame body; the second direction is the length direction of the frame body.

In a possible implementation manner, the first traction limiting part is close to one end, away from the rotating shaft assembly, of the electrical connection wire, so that when the whole machine is repeatedly bent, two sides, first stretched and deformed, of the electrical connection wire can be timely guided by the first traction limiting part.

In a possible implementation manner, a second traction limiting part is further disposed in the accommodating cavity, and the second traction limiting part protrudes towards the direction of the accommodating cavity to guide the electric connection wire to be located in a bent state in the accommodating cavity.

In a possible embodiment, the second traction limiting portion is an arc-shaped protrusion along the first direction of the frame body, so that the electrical connection line can be smoothly attached without being damaged or scratched due to a sharp corner or the like.

In one possible embodiment, the second pull stopper portion is elongated in the second direction of the frame body, so that the bending deformation of the electrical connection wire having a certain width can be sufficiently guided.

In one possible embodiment, the second pull limiting portion is located between the middle portion of the electrical connection wire and the first pull limiting portion.

In a possible embodiment, the height of the first traction limiting part is greater than the height of the second traction limiting part along the first direction of the frame body.

The first height dimension who draws spacing portion is great, and it is great to the bending deformation range influence of electric connecting wire, consequently can guarantee that the electric connecting wire takes place to warp along predesigned form, and the second draws the height of spacing portion less for the first height that draws spacing portion, can guarantee that the second draws the chamber region that spacing portion corresponds to and has sufficient space to hold the redundant deformation of electric connecting wire.

In one possible embodiment, an arc-shaped recess is formed between the first traction limiting part and the second traction limiting part to further increase the space for the redundant deformation of the electrical connection wire, so that the electrical connection wire is not excessively pulled.

In one possible embodiment, the electrical connection line comprises a flexible circuit board.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

Fig. 1 is a schematic structural diagram of a folding screen device provided in the prior art.

Fig. 2 is a schematic view of the folded screen apparatus of fig. 1 after closing.

Figure 3 is a front cross-sectional view of a prior art folding screen apparatus.

Fig. 4 is a schematic diagram showing an abnormal state of an electrical connection line in a folding screen device of the related art.

Fig. 5 is a front cross-sectional view of a folding screen apparatus provided by an embodiment of the present application.

Fig. 6 is a schematic partial structural diagram of a folding screen device according to an embodiment of the present application.

Fig. 7 is a schematic view of the structure of fig. 6 after being turned 180 °.

Reference numerals:

1 ' -folding screen equipment, 11 ' -frame body, 12 ', flexible screen, 13 ' -rotating shaft assembly, 14 ' -electric connecting wire, 141 ' -middle part and 142 ' -two sides;

1-folding screen equipment, 11-a frame body, 111, an accommodating cavity, 112-a first traction limiting part, 113-a second traction limiting part, 114-a recess, 13-a rotating shaft component, 14-an electric connecting line, 141-a middle part and 142-two sides;

x-length direction, Y-width direction, and Z-thickness direction.

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.

Detailed Description

For better understanding of the technical solutions of the present application, the following detailed descriptions of the embodiments of the present application are provided with reference to the accompanying drawings.

With the appearance of the flexible screen, terminal equipment such as a mobile phone and the like can realize the bending and folding of the screen by utilizing the flexible screen, so that the flexible screen has a larger display area while the terminal equipment has a more compact volume. Accordingly, the terminal device may be a folding screen device or a bending screen device.

Fig. 1 is a schematic diagram of a folding screen apparatus in the prior art. Fig. 2 is a schematic view of the folded screen apparatus of fig. 1 after closing. As shown in fig. 1 to 2, the conventional folding screen device 1 'includes two frames 11' and a flexible screen 12 'provided on the frames 11'. The end parts of two adjacent frames 11 ' close to the rotating shaft assembly 13 ' can rotate around the rotating shaft assembly 13 ' between the two frames 11 ', so that the ends of the two frames 11 ' far from the rotating shaft assembly 13 ' are relatively close to or far away from each other, and the folding screen device 1 ' can correspondingly present different states such as closing or unfolding. The flexible screen 12 ' covers the surface of the frame 11 ' and can be folded or unfolded correspondingly with the position change between the adjacent frames 11 '. Specifically, when the two frames 11' are oppositely unfolded, they are arranged in parallel and coplanar. Accordingly, the flexible screen 12 'covered on the surface of the frame 11' can be unfolded to form a larger display surface, and the display surface can be displayed as a single display screen. It should be noted that the number of the frame bodies 11 'of the folding screen device 1' may be two or more, and when the number of the frame bodies 11 'is two or more, each adjacent frame body 11' may rotate around the mutually parallel rotating shafts, so as to form a multi-layer folding structure, or expand to obtain a larger display area. In the present application, the folding screen device 1 'is mainly described as having two housings 11'.

As can be understood by those skilled in the art, the rotating shaft in the rotating shaft assembly 13 'located between two adjacent frames 11' may be a solid rotating shaft or a virtual rotating shaft. When the rotation axis is a virtual rotation axis, the rotation axis is not entirely constituted by a solid part of the folding screen device 1 ', but is a virtual rotation line formed by shape constraint and displacement constraint of different parts in the folding screen device 1' when relatively moving. When moving relatively, two adjacent frames 11 'of the folding screen device 1' will rotate relatively around the virtual rotation axis.

The components inside the folding screen device 1 ', such as the main circuit board, the processor, the memory, and the camera assembly, may be fixed to the two frames 11', respectively. For example, the main circuit board, the processor, the memory and other components may be disposed inside one of the housings 11 ', and the other housing 11' may be used for carrying components such as the camera assembly and the antenna.

Fig. 3 is a front cross-sectional view of a prior art folding screen apparatus, as shown in fig. 3. In order to form electrical connection between components located in different frames 11 ', an electrical connection line 14' is further provided in the folding screen device 1 ', a middle portion 141' of the electrical connection line 14 'is connected to the rotating shaft assembly 13', two sides 142 'of the electrical connection line 14' are respectively connected to electrical connection points of two adjacent different frames 11 ', so as to be connected with different components such as a main circuit board, a processor, a camera assembly or an antenna on each frame 11' and transmit electrical signals, and the electrical connection line 14 'is made of a flexible material and can be correspondingly bent or deformed along with the change of the relative position of the frame 11'. Thus, when the folding screen device 1 ' is in different states such as being closed or being unfolded, the electrical connection line 14 ' can still maintain the electrical connection between two adjacent frames 11 ' by means of the bending deformation of the electrical connection line.

In particular, the electrical connection 14' can have a variety of different configurations and forms. The main circuit board of the folding screen device 1 'may be located in one of the frame bodies 11', and the main circuit board may transmit electrical signals with other components. In order to electrically connect the main circuit board and the components located in the other frame 11 ', the electrical connection line 14' includes a flexible circuit board. The flexible circuit board may include a plurality of leads to enable transmission of a plurality of different electrical signals. In addition, the antenna and other components in the folding screen device 1' can be electrically connected to the main circuit board by a coaxial cable. Thus, in an alternative, the electrical connection 14' may also include a single, separately provided cable that may be used to effect signal transmission between two separate components. In this embodiment, a single cable may be used to transmit different signals such as coaxial signals.

In order to fold or unfold the flexible screen 12 ', the folding screen device 1' needs to have a large unfolding and folding angle, for example, in the folding screen device 1 'in fig. 1, the angle formed by the two frames 11' of the folding screen device 1 'can be changed from 0 ° to 180 °, and accordingly, the distance between the two ends of the electrical connection line 14' can also be changed in a large range. When the whole machine is in a folded state (0 degree), the electric connecting wire 14 'is in a basically straightened state, and when the whole machine is slowly unfolded, the length of the electric connecting wire 14' in the frame body 11 'begins to form redundancy, and the electric connecting wire 14' begins to be extruded and bent. After the whole machine is repeatedly bent, the electrical connection wire 14' may be damaged or broken due to the reasons of inconsistent process form, abrasion, jump of the intermediate form, and the like, and thus the whole machine may malfunction.

Fig. 4 is a schematic diagram showing an abnormal state of an electrical connection line in a folding screen device of the related art. As shown in fig. 3 and 4, fig. 3 shows a schematic diagram of the electrical connection line 14 'in a normal state, and the region a in fig. 4 shows a schematic diagram of the electrical connection line 14' in an abnormal state.

Therefore, the embodiment of the application provides a folding screen device, which can avoid the problems of inconsistent bending direction, jumping and the like of an electric connecting wire in the bending process by controlling the bending form of the electric connecting wire, so as to improve the long-term reliability of the electric connecting wire. The specific structure of the folding screen device will be described below.

Fig. 5 is a front cross-sectional view of a folding screen apparatus provided by an embodiment of the present application. As shown in fig. 5, the present embodiment provides a folding screen device 1, which includes two frames 11, a rotating shaft assembly 13 hinged to the two frames 11, and an electrical connection line 14. The two frames 11 can rotate around the rotating shaft of the rotating shaft assembly 13 to fold or unfold, specifically, one end of the two frames 11 connected with the rotating shaft assembly 13 is used as a hinged end, and one end of the frame 11 far away from the rotating shaft assembly 13 is used as a free end. The free ends of the two frames 11 can rotate around the rotating shaft assembly 13, so that the folding screen device 1 is in an opened or closed state as a whole. Accommodating cavities 111 are provided in both frame bodies 11 for accommodating the main circuit board, other components, and at least part of the electrical connection wires 14.

The electrical connection line 14 is used to electrically connect the main circuit board with other components, and the electrical connection line 14 may include a flexible circuit board. After the mounting, the middle portion 141 of the electrical connection line 14 is fixed to the rotary shaft assembly 13, and both sides 142 of the electrical connection line 14 are fixed to the two housings 11, respectively.

In the folding screen device 1 provided by the embodiment of the application, a first traction limiting portion 112 is arranged in the accommodating cavity 111 of at least one frame 11, and the first traction limiting portion 112 protrudes towards the direction of the accommodating cavity 111 to guide the electric connection wire 14 to be located in the bending form of the accommodating cavity 111. The first pulling-limiting portion 112 can be directly formed on the inner surface of the frame 11 corresponding to one side of the accommodating cavity to form a natural transition shape so as to guide the bending deformation direction of the electrical connection wire 14. As shown in fig. 5, after the folding screen device 1 is finally flattened, the electrical connection line 14 is substantially completely limited by the first traction limiting portion 112, that is, the electrical connection line 14 can fit the inside shape of the frame 11, and the first traction limiting portion 112 plays an important role in guiding and controlling the shape of the electrical connection line 14 during the bending process. After the electrical connection wire 14 is continuously stretched and bent for several times, the electrical connection wire 14 can form bending direction memory, and finally the electrical connection wire 14 can keep dynamic bending deformation consistency in the whole machine for a long time, so that the problems of inconsistent directions, jumping and small-radius bending of all parts of the electrical connection wire 14 in the bending process are avoided, and the reliability of the electrical connection wire 14 and the reliability of the folding screen device 1 are improved.

In a specific embodiment, the first pulling stopper 112 is provided on each of the two frames 11, so as to guide the deformation direction of the electrical connection wire 14 in each of the two frames 11. Because the two frames 11 are symmetrical by taking the rotating shaft assembly 13 as an axis, and the stress of the electrical connection lines 14 positioned in the two frames 11 is basically the same in the bending process, the shapes and the sizes of the first traction limiting parts 112 on the two frames 11 can be set to be the same.

Fig. 6 is a partial structural schematic diagram of a folding screen device provided by an embodiment of the application, and fig. 7 is a structural schematic diagram of fig. 6 after being turned over by 180 °. Referring to fig. 5 to 7, along the first direction of the frame 11, the first traction limiting portion 112 is a circular arc protrusion, so that the electrical connection line 14 can be smoothly attached without damaging or scratching the electrical connection line 14 due to sharp corners and other structures. In the present embodiment, the first direction is the thickness direction Z of the frame 11, so that the bending deformation of the electrical connection wire 14 in the thickness direction Z is guided.

The electrical connection wire 14 may have a certain width, and the first pull stopper 112 may have an elongated shape along the second direction of the frame 11 in order to sufficiently guide the bending deformation of the electrical connection wire 14. In this embodiment, the second direction is the longitudinal direction X of the frame 11.

Both sides 142 of the electrical connection wire 14 are fixed to the frame 11, when the whole machine is bent, both sides 142 of the electrical connection wire 14 are firstly stretched, and according to the sequence of the stress deformation of each part of the electrical connection wire 14 when the whole machine is repeatedly bent, the first traction limiting portion 112 can be arranged at one end close to the electrical connection wire 14 and far away from the rotating shaft assembly 13, that is, both sides 142 of the electrical connection wire 14, which are firstly stretched and deformed, can be timely guided by the first traction limiting portion 112.

In a possible embodiment, a second pulling-limiting portion 113 is further disposed in the accommodating cavity 111, and the second pulling-limiting portion 113 protrudes toward the accommodating cavity 111 to guide the electrical connection wire 14 to be located in a bent shape in the accommodating cavity 111.

The second pull limiting portion 113 may be an arc-shaped protrusion along the first direction of the frame 11, so that the electrical connection line 14 can be smoothly attached without damaging or scratching the electrical connection line 14 due to a sharp corner or the like. In the present embodiment, the first direction is the thickness direction Z of the frame 11, so that the bending deformation of the electrical connection wire 14 in the thickness direction Z is guided.

The electrical connection wire 14 may have a constant width, and the second pull stopper 113 may have an elongated shape along the second direction of the frame 11 in order to sufficiently guide the bending deformation of the electrical connection wire 14. In this embodiment, the second direction is the longitudinal direction X of the frame 11.

Specifically, the second traction limiting portion 113 may be located between the middle portion 141 of the electrical connection wire 14 and the first traction limiting portion 112, whereby the first traction limiting portion 112 is closer to both sides 142 of the electrical connection wire 14, and the second traction limiting portion 113 is closer to the rotating shaft assembly 13.

The height of the first traction limiting portion 112 is greater than the height of the second traction limiting portion 113 along the first direction of the frame 11. In the process of bending the folding screen device 1, the two sides 142 of the electrical connection wire 14 are firstly bent and deformed, and the first traction limiting portion 112 is close to the two sides 142 of the electrical connection wire 14, so that the deformation of the electrical connection wire 14 can be firstly guided, the height size of the first traction limiting portion 112 is large, the influence on the bending deformation amplitude of the electrical connection wire 14 is large, and therefore the electrical connection wire 14 can be ensured to be deformed along a pre-designed shape.

The height of the second traction limiting part 113 is smaller than that of the first traction limiting part 112, so that the area of the accommodating cavity 111 corresponding to the second traction limiting part 113 can be ensured to have enough space to accommodate the redundant deformation of the electrical connection wire 14.

Further, an arc-shaped recess 114 is formed between the first and second

draw limiting portions

112 and 113. The arc-shaped recess 114 can further increase the space for redundant deformation of the electrical connection wire so that the electrical connection wire 14 is not excessively pulled.

It is noted that a portion of this patent application contains material which is subject to copyright protection. The copyright owner reserves the copyright rights whatsoever, except for making copies of the patent files or recorded patent document contents of the patent office.

Claims

1. A folding screen device is characterized by comprising two frame bodies, a rotating shaft assembly hinged with the two frame bodies and an electric connecting line;

2. The folding screen apparatus of claim 1, wherein the first pull stop is a rounded protrusion in the first direction of the frame.

3. The folding screen apparatus of claim 2, wherein the first draw stop is elongated in the second direction of the frame.

4. A folding screen apparatus according to claim 3, wherein the first direction is a thickness direction of the frame body; the second direction is the length direction of the frame body.

5. The folding screen apparatus of claim 2, wherein the first traction limiting portion is proximate to an end of the electrical connection line distal from the spindle assembly.

6. The folding screen apparatus of any of claims 1-5, wherein a second pull stop is further disposed within the receiving cavity, the second pull stop protruding in a direction toward the receiving cavity to guide the electrical connection wires in a bent configuration within the receiving cavity.

7. The folding screen apparatus of claim 6, wherein the second draw stop is an arcuate projection in the first direction of the frame.

8. The folding screen apparatus of claim 7, wherein the second draw stop is elongated in the second direction of the frame.

9. The folding screen apparatus of claim 8, wherein the first direction is a thickness direction of the frame; the second direction is the length direction of the frame body.

10. The folding screen apparatus of claim 6, wherein the second pull stop portion is located between a middle portion of the electrical connection line and the first pull stop portion.

11. The folding screen apparatus of claim 6, wherein the first draw stop portion has a height greater than a height of the second draw stop portion in the first direction of the frame.

12. A folding screen apparatus according to claim 6 wherein an arcuate recess is formed between the first draw limiting portion and the second draw limiting portion.

13. A folding screen apparatus according to any of claims 1 to 5 wherein said electrical connection comprises a flexible circuit board.