Folding screen mobile phone

Abstract

The utility model relates to a folding screen mobile phone, which comprises a middle frame, a rotating shaft structure, a first shell, a second shell, a flexible display screen and a flexible circuit board, the middle frame is of a rotatable opening and closing structure, the rotating shaft structure is movably installed in the middle frame, and the first shell and the second shell are arranged on the top face of the middle frame and rotatably installed on the two opposite sides of the rotating shaft structure. The flexible display screen is fixedly mounted on the bottom surface of the middle frame; the middle frame, the first shell, the second shell and the flexible display screen form a containing space, and the flexible circuit board is installed in the containing space and located below the rotating shaft structure. The two side parts of the flexible circuit board are bent to form a first bending area and a second bending area, the first bending area and the second bending area are respectively provided with a reinforcing steel sheet, a supporting part is arranged at the bottom of the middle frame, a groove is formed in the supporting part, and the reinforcing steel sheets are clamped in the groove. According to the folding screen mobile phone provided by the invention, the middle frame structure of the mobile phone is matched with the flexible circuit board structure by adjusting the middle frame structure of the mobile phone, so that the problem that the flexible circuit board of the mobile phone is easily damaged due to stress concentration is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of foldable screen mobile phones, and in particular to a foldable screen mobile phone. Background Art

[0002] At present, mobile phones have been widely used in various life scenarios. Among them, foldable screen mobile phones are one of the important directions of the development of mobile phone technology. Foldable screen mobile phones are smart phones with a special design that allows the screen to be folded. This design makes the phone smaller and easier to carry when folded, and provides a larger screen area in the unfolded state, bringing users a better visual experience.

[0003] The realization of foldable screen mobile phones mainly uses flexible screens and flexible circuit boards inside the mobile phone. The flexible circuit boards are arranged in the flip area of ​​the mobile phone and perform dynamic bending movements during the bending process of the mobile phone. Long-term bending movements can easily cause short lines or even broken lines in stress concentration positions in the flexible circuit boards, resulting in functional abnormalities and affecting service life. Summary of the invention

[0004] In order to solve the problems existing in the above-mentioned background technology, the present invention provides a folding screen mobile phone, which adjusts the middle frame structure of the mobile phone to make the middle frame structure more matched with the flexible circuit board structure, so as to solve the problem that stress concentration may easily cause damage to the flexible circuit board of the mobile phone.

[0005] In a first aspect, the present application provides a folding screen mobile phone, including: a middle frame, a hinge structure, a first shell, a second shell, a flexible display screen and a flexible circuit board;

[0006] The middle frame is a rotatable opening and closing structure, the shaft structure is movably installed in the middle frame, the first shell and the second shell are arranged on the top surface of the middle frame, and are rotatably installed on opposite sides of the shaft structure; the flexible display screen is fixedly installed on the bottom surface of the middle frame;

[0007] The middle frame, the first shell, the second shell and the flexible display screen form an accommodating space, and the flexible circuit board is installed in the accommodating space and is located below the rotating shaft structure;

[0008] The two side portions of the flexible circuit board are bent to form a first bending area and a second bending area respectively, and the bottom surfaces of the first bending area and the second bending area are provided with reinforcing steel sheets, and the bottom of the middle frame is provided with a supporting portion supporting the first bending area and the second bending area, and the supporting portion is provided with a groove near the reinforcing steel sheet, and the reinforcing steel sheet is clamped in the groove.

[0009] In one embodiment, the flexible circuit board is arched near the rotating shaft structure to form a bending portion, and the cross-section of the bending portion is arched; the top of the bending portion is concave to form an avoidance portion for avoiding the rotating shaft structure.

[0010] In one embodiment, the bottoms of both sides of the bending portion are bent in an S shape.

[0011] In one embodiment, a first accommodating portion is formed between the middle frame and the first shell, and the first bending area is bent toward the first accommodating portion and extends into the first accommodating portion;

[0012] A second accommodating portion is formed between the middle frame and the second shell body, and the second bending area is bent along a direction toward the second accommodating portion and extends into the second accommodating portion.

[0013] In one embodiment, it also includes a fixing portion installed in the accommodating space, and the fixing portion includes two clamping brackets, and the two clamping brackets respectively cooperate with the supporting portion of the middle frame to clamp the first bending area and the second bending area of ​​the flexible circuit board.

[0014] In one embodiment, foam is provided between the flexible circuit board and the pressing bracket.

[0015] In one embodiment, a rotating shaft cover is further included, and the rotating shaft cover is sleeved on the rotating shaft structure.

[0016] In one embodiment, the cross section of the rotating shaft cover is arched.

[0017] In one embodiment, a wear-resistant material is arranged above the bending portion of the flexible circuit board.

[0018] In one embodiment, the bending area of ​​the flexible display screen is in the shape of a water drop.

[0019] The present application provides a folding screen mobile phone. In an embodiment of the utility model, a support portion is formed at the bottom of the middle frame to support the flexible circuit board, and a groove for accommodating a reinforcing steel sheet is opened on the supporting surface facing the flexible circuit board, so that the reinforcing steel sheet of the flexible circuit board is just engaged in the groove, thereby increasing the supporting surface of the middle frame for the flexible circuit board to solve the stress concentration problem of the flexible circuit board. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 This is a schematic diagram of the structure of a folding screen mobile phone in one embodiment of the utility model;

[0022] Figure 2 This is a partial schematic diagram of a cross section of a folding screen mobile phone in an embodiment of the utility model;

[0023] Figure 3 The figure is a schematic diagram of the structure of a flexible circuit board in one embodiment of the utility model. DETAILED DESCRIPTION

[0024] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] In addition, the descriptions of "first", "second", etc. in the present invention are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0026] See also Figures 1 to 3 , Figure 1 This is a schematic diagram of the structure of a folding screen mobile phone in an embodiment of the utility model. Figure 2 This is a partial schematic diagram of a cross section of a folding screen mobile phone in an embodiment of the utility model. Figure 3 A foldable screen mobile phone includes a middle frame 1, a hinge structure (not shown), a first shell 3, a second shell 4, a flexible display screen 5 and a flexible circuit board 6.

[0027] The middle frame 1 is a structure that can be rotatably opened and closed, the hinge structure is movably installed in the middle frame 1, the first shell 3 and the second shell 4 are arranged on the top surface of the middle frame 1, and are rotatably installed on opposite sides of the hinge structure; the flexible display screen 5 is fixedly installed on the bottom surface of the middle frame 1.

[0028] The middle frame 1 , the first shell 3 , the second shell 4 and the flexible display screen 5 form an accommodating space, and the flexible circuit board 6 is installed in the accommodating space and is located below the hinge structure.

[0029] The two side portions of the flexible circuit board 6 are bent to form a first bending area 61 and a second bending area 62 respectively, and the bottom surfaces of the first bending area 61 and the second bending area 62 are provided with reinforcing steel sheets 611, and the bottom of the middle frame 1 is provided with a supporting portion 11 for supporting the first bending area 61 and the second bending area 62, and the supporting portion 11 is provided with a groove 111 near the reinforcing steel sheet 611, and the reinforcing steel sheet 611 is clamped in the groove 111.

[0030] In an embodiment of the utility model, the structure of the middle frame is adjusted, a support portion is formed at the bottom of the middle frame to support the flexible circuit board, and a groove for accommodating a reinforcing steel sheet is opened on the supporting surface facing the flexible circuit board, so that the reinforcing steel sheet of the flexible circuit board is just engaged in the groove, thereby increasing the supporting surface of the middle frame for the flexible circuit board to solve the stress concentration problem of the flexible circuit board.

[0031] In this embodiment, the middle frame 1 can be divided into a first part 13 and a second part 14 relative to the axis of rotation. The first part 13 and the second part 14 are respectively arranged on the opposite sides of the rotating shaft structure, and the first shell 3 is fixedly installed in the first part 13, and the second shell 4 is fixedly installed in the second part 14.

[0032] The flexible display screen 5 is installed at the bottom of the middle frame 1. When the foldable screen mobile phone is flipped, the hinge structure rotates, driving the first part 13 and the second part 14 of the middle frame 1 to relatively open and close along the hinge structure, so that the foldable screen mobile phone is rotated to be flattened and closed, and the direction of rotation and opening is the direction facing the flexible display screen 5. In some embodiments, the bending area of ​​the flexible display screen 5 is in a water drop shape.

[0033] Specifically, the position of the flexible circuit board 6 near the rotating shaft structure is arched to form a bending portion 63, and the cross section of the bending portion 63 is arched; the top of the bending portion 63 is concave to form an avoidance portion 631 for avoiding the rotating shaft structure. Further, the bottoms of both sides of the bending portion 63 are bent in an S shape. The arched bending portion 63 of the flexible circuit board 6 is located below the rotating shaft structure, and the avoidance portion 631 is directly opposite to the rotating shaft structure, and the avoidance portion 631 provides an installation space for the rotating shaft structure.

[0034] During the bending process of the flexible circuit board, the part thereof which is opposite to the rotating shaft structure will also be stretched at the same time. An arched bending portion is provided to provide a bending space for the flexible circuit board. At the same time, the bottoms on both sides of the bending portion are provided as S-shaped structures to provide excess extension, which makes it difficult for the flexible circuit board to break due to excessive stretching. The S-shaped structures on both sides increase the bending margin of the flexible circuit board, reduce damage to the flexible circuit board, and increase its service life.

[0035] In some embodiments, a shaft cover 7 is further included, and the shaft cover 7 is sleeved above the shaft structure. The shaft cover 7 separates the middle frame 1 from the shaft structure, provides a folding space when the folding screen mobile phone is folded, and avoids wear caused by friction between the middle frame 1 and the shaft structure. Furthermore, the cross section of the shaft cover 7 is set to be an arch according to the flip structure of the folding screen mobile phone.

[0036] Preferably, a wear-resistant material 64 is arranged above the bending portion 63 of the flexible circuit board 6. The bending portion 63 is close to the shaft structure. When the flexible circuit board 6 is bent, the bending portion 63 and the shaft structure are in contact and friction is generated, which easily causes the flexible circuit board 6 to be worn and damaged. The wear-resistant material 64 is arranged to prevent the flexible circuit board 6 from directly contacting the shaft structure, thereby further extending the life of the flexible circuit board 6. In some embodiments, the wear-resistant material 64 is a Teflon material.

[0037] A first accommodating portion 18 is formed between the middle frame 1 and the first shell 3, and the first bending zone 61 is bent toward the first accommodating portion 18 and extends into the first accommodating portion 18; a second accommodating portion 19 is formed between the middle frame 1 and the second shell 4, and the second bending zone 62 is bent along the direction of the second accommodating portion 19 and extends into the second accommodating portion 19.

[0038] In this embodiment, the bending portion 63 of the flexible circuit board 6 is bent in the direction extending to both sides to form an inclined area, which is the first bending area 61 and the second bending area 62. The first bending area 61 and the second bending area 62 continue to extend outward and bend again, so that the extended area is parallel to the first shell 3 and the second shell 4.

[0039] Furthermore, a fixing part is installed in the accommodating space, and the fixing part includes two clamping brackets 8, and the two clamping brackets 8 respectively cooperate with the supporting part 11 of the middle frame 1 to clamp the first bending area 61 and the second bending area 62 of the flexible circuit board 6. The clamping bracket 8 is installed above the first bending area 61 and the second bending area 62, and the supporting part 11 is located below the first bending area 61 and the second bending area 62. The clamping bracket 8 and the supporting part 11 are inclined toward the first bending area 61 and the second bending area 62 to be consistent with the bending angle of the first bending area 61 and the second bending area 62, so as to cooperate with each other to clamp and fix the flexible circuit board 6.

[0040] In some embodiments, a foam 9 is provided between the flexible circuit board 6 and the pressing bracket 8 . The foam 9 is used to provide elasticity between the pressing bracket 8 and the first bending area 61 and the second bending area 62 .

[0041] A folding screen mobile phone provided in the present application forms an accommodating space inside a mutually symmetrical middle frame, and a flexible circuit board is arranged in the accommodating space. The two sides of the flexible circuit board are bent to form a bending area, and the middle frame forms a supporting part below the bending area, which cooperates with a clamping bracket in the accommodating space to fix and support the flexible circuit board. A groove is provided in the supporting part so that the reinforcing steel sheet of the flexible circuit board can be exactly engaged in the groove, thereby optimizing the force problem of the flexible circuit board and reducing the risk of stress concentration causing damage to the flexible circuit board and short circuit.

[0042] The above embodiments are only used to introduce the technical solutions of the present application in detail, but the description of the above embodiments is only used to help understand the methods of the embodiments of the present application and should not be understood as limiting the present application. Any changes or substitutions that can be easily thought of by those skilled in the art should be included in the protection scope of the embodiments of the present application.

Claims

1. A foldable screen mobile phone, characterized in that: include: Middle frame, hinge structure, first shell, second shell, flexible display screen and flexible circuit board; The middle frame is a rotatable opening and closing structure, the shaft structure is movably installed in the middle frame, the first shell and the second shell are arranged on the top surface of the middle frame, and are rotatably installed on opposite sides of the shaft structure; the flexible display screen is fixedly installed on the bottom surface of the middle frame; The middle frame, the first shell, the second shell and the flexible display screen form an accommodating space, and the flexible circuit board is installed in the accommodating space and is located below the rotating shaft structure; The two side portions of the flexible circuit board are bent to form a first bending area and a second bending area respectively, and the bottom surfaces of the first bending area and the second bending area are provided with reinforcing steel sheets, and the bottom of the middle frame is provided with a supporting portion supporting the first bending area and the second bending area, and the supporting portion is provided with a groove near the reinforcing steel sheet, and the reinforcing steel sheet is clamped in the groove.

2. The folding screen mobile phone according to claim 1, characterized in that: The position of the flexible circuit board close to the rotating shaft structure is arched to form a bending portion, and the cross section of the bending portion is arched; the top of the bending portion is concave to form an avoidance portion for avoiding the rotating shaft structure.

3. The folding screen mobile phone according to claim 2, characterized in that: The bottoms of both sides of the bending portion are bent in an S shape.

4. The foldable screen mobile phone according to claim 1, characterized in that: A first accommodating portion is formed between the middle frame and the first shell, and the first bending area is bent toward the first accommodating portion and extends into the first accommodating portion; A second accommodating portion is formed between the middle frame and the second shell body, and the second bending area is bent along a direction toward the second accommodating portion and extends into the second accommodating portion.

5. The foldable screen mobile phone according to claim 1, characterized in that: It also includes a fixing portion installed in the accommodating space, and the fixing portion includes two clamping brackets, and the two clamping brackets respectively cooperate with the supporting portion of the middle frame to clamp the first bending area and the second bending area of ​​the flexible circuit board.

6. The foldable screen mobile phone according to claim 5, characterized in that: Foam is arranged between the flexible circuit board and the pressing bracket.

7. The foldable screen mobile phone according to claim 1, characterized in that: It also includes a rotating shaft cover, which is sleeved on the rotating shaft structure.

8. The foldable screen mobile phone according to claim 7, characterized in that: The cross section of the rotating shaft cover is arched.

9. The folding screen mobile phone according to claim 2, characterized in that: A wear-resistant material is arranged above the bending portion of the flexible circuit board.

10. The foldable screen mobile phone according to claim 1, characterized in that: The bending area of ​​the flexible display screen is in a water drop shape.

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