Dual-synchronous axis lever card-type folding screen mobile phone

Abstract

A dual-synchronous axis lever card type folding screen mobile phone and tablet computer belongs to the field of mechanical technology. The main components include: a mobile phone cavity or the front part of the cavity, an end plate, and a lever card. The connection relationship is: the (non-rotating) synchronous gear rigidly connected to the two ends of the mobile phone cavity or the front part of the cavity is hinged to the hinge shafts of the two end plates, so that the synchronous gear meshes with the transmission gear fixed to the rotating shaft and the end plate, or the synchronous gear directly meshes to achieve the purpose of synchronous reverse rotation; the fixed lining plate is used to support the mobile phone screen, and the hinge shaft suspension lining plate of the mobile phone screen adjacent to the screen folding area is connected to the mobile phone structure by a hinge shaft parallel to the screen; the lever shaft of the lever card is hinged to the hinge shaft of the end plate, and the lever column at the front end of the lever card is inserted into the shifting groove of the shell and screen support strip; the protrusion of the shell and screen support strip is inserted into the guide groove of the end plate to limit its lateral displacement; the dual-synchronous axis lever card structure is suitable for inward folding folding screen mobile phones and tablets.

Description

[Technical field]

[0001] The invention belongs to the field of structural design; to be more specific, the invention utilizes the linkage control of radial synchronous displacement components driven by teeth or paddles to achieve the purpose of increasing the number of screens. [Background Technology]

[0002] With the continuous development of the communications industry, smartphones have open operating systems, hardware and software scalability, and support for third-party secondary development.

[0003] The overall structure of a smartphone: A smartphone can be considered a pocket computer. It has a processor, memory, input and output devices (keyboard, display, USB interface, headphone interface, camera, etc.) and I / O channels. The mobile phone communicates with the base station through an air interface protocol (such as GSM, CDMA, PHS, etc.), and can transmit both voice and data.

[0004] The main circuit board of a smartphone is the most important component in the phone: it is located inside the smartphone and is connected to various components through data cables or contacts. The main circuit board can be said to be the core component of the mobile phone. It is responsible for the input, output, processing, and transmission of mobile phone signals, as well as the power supply and control of the entire machine. The design of the circuit boards of smartphones of different brands will be different. Some smartphones have only one circuit board, while some smartphones have a sub-circuit board in addition to the main circuit. The sub-circuit board generally connects to accessories such as interfaces and cameras. The main circuit board of the smartphone is installed with surface mount components, which are arranged very closely, and the main chips on the circuit board are soldered on the circuit board in the form of BGA. Smartphone circuit structure: The circuit of a smartphone is the core of the smartphone, responsible for the power supply, control, and realization of various functions of the smartphone. The circuits of smartphones mainly include: radio frequency circuit, voice circuit, processor and memory circuit, power supply and charging circuit, operation and screen display circuit, interface circuit, and other functional circuits (such as Bluetooth, antenna, radio, sensor, vibrator, camera circuit, etc.), such as Figure 4 shown.

[0005] The specific design process includes: determination of the motherboard solution, determination of the mobile phone appearance, structural modeling, production and adjustment of the appearance prototype, structural design, structural design optimization, structural review, verification of large structural prototypes, etc. In addition, it also needs to go through mold review, project follow-up during mold casting, mold trial and mold modification, trial production, and mass production. In the field of mobile phone structure, folding screen technology is undoubtedly a development trend:

[0006] Folding screens have become the best solution to promote the "integration" of mobile phones and tablets: Samsung, as the originator, has implemented it for many years and demonstrated the "Infinity Flex Display" folding screen solution at the Samsung SDC Developer Conference. The launch of Samsung's first foldable screen mobile phone, Galaxy Fold, not only solves the contradiction between mobile phone screen size and portability, but also brings a better visual experience. Therefore, the industry generally believes that folding screens are expected to lead another round of mobile phone reforms after full-screen phones. Goldman Sachs, a top global investment bank, believes that Samsung Galaxy Fold is the "main potential challenge" facing Apple. From the press conference, Galaxy Fold has features different from traditional mobile phones, such as an ultra-border folding screen, up to 6 cameras and a dual-battery system. It should be said that Galaxy Fold not only provides a satisfactory visual experience, but also surpasses the level of traditional flagships in terms of photography, performance and battery life. Therefore, Galaxy Fold not only brings about changes in mobile phone screens, it will even push the mobile phone industry to a higher level. In the demonstration, the effect is still very amazing. You can see that the tablet-sized screen folds inward and becomes a small screen, while the outer display is no different from the mobile phones we use daily. It is full of technology and completely breaks away from the current rut of mobile phone manufacturers in exploring full-screen. It is not an exaggeration to say that it is subversive. Different from the previous hinge design, Samsung's "Infinity FlexDisplay" folding screen folds a whole screen. According to the folding screen patent applied by Samsung, this folding screen has two electrode layers that can be powered separately, and the bottom substrate is made of flexible plastic material, which can facilitate the bending and folding of the screen. From the structural design point of view, Galaxy Fold adopts an inward folding design with two states: open and closed. When in the closed state, what is presented to the user is a cover display with a size of 4.6 inches, a resolution of 1960x840 pixels, a screen density of 420ppi, and an aspect ratio of 21:9, which is about the same size as an ordinary mobile phone. After opening the Galaxy Fold, what appears in front of the user is the main display screen with a size of 7.3 inches, a resolution of 2152x1536 pixels, an aspect ratio of 4.2:3, and a screen density of 420ppi. In layman's terms, when closed, the Galaxy Fold is an ordinary smartphone, and when unfolded, the Galaxy Fold turns into a tablet. It is easy to understand just by looking at the structure, but the problem is how to ensure that the screen performance does not decrease during the opening and closing process, so that users can have a smooth and comfortable experience. This has to mention Samsung's new ultra-border folding screen, which can be bent 360 degrees to meet any folding needs. Based on this screen technology, the screen performance always remains in the best state during the user's repeated opening and closing process, so that users will not have any visual sense of fault.Whether the Galaxy Fold is in the open or folded state, the applications it displays can be seamlessly converted, allowing users to switch between the main screen and the cover screen at any time. Samsung said that if developers allow them to scale the applications, all regular Android applications will run perfectly on the Galaxy Fold. For example, when the phone switches from portrait mode to landscape mode, the system will also adjust the application according to the tablet mode. In addition, the Galaxy Fold can also provide users with a more efficient experience in open mode to adapt to more complex scene requirements. The Galaxy Fold's powerful multi-window function can handle three tasks at the same time.

[0007] The hinge designs of Huawei and Apple's folding parts are extremely complex. Huawei uses a turning design with 5 small sections, using more than 100 components and taking 3 years of intensive research and development; Apple's similar design uses more than 200 components; the technical difficulty lies in the real-time equal radius graceful expansion of the bending part, which not only requires a certain support strength, but also a service life of more than 100,000 times.

[0008] Samsung has also developed a three-layer foldable and stacked stretchable screen mobile phone, similar to a "scroll" experience. Patent documents show that it needs to be bent and stretched in two directions; the difficulty is much higher than a two-layer folding screen. [Summary of the invention]

[0009] Existing product defects: The current design representatives of mobile phone bending mechanisms are: Samsung, Apple, Lenovo, etc.; the common shortcomings of their design ideas are: in order to adapt to the needs of non-stretchable screens after bending, either the two ends of the hinge are moved to adapt without changing the length of the hinge after bending; or an extremely complex linkage mechanism is used to change the link spacing.

[0010] The purpose of the present invention is to design an OLED bending biaxial hinge suitable for internal folding in view of the defects of current products, and to realize it by using biaxial and synchronous gears; it has the advantages of simple structure, space saving, beautiful appearance and reliable operation.

[0011] The invention has the following characteristics: simple conception, limited cost increase, significant volume reduction, reliable operation, etc.

[0012] The specific implementation mode of the present invention:

[0013] The main components of the dual-synchronous axis lever-push-card folding mechanism include: the mobile phone cavity or the front of the cavity (the mobile phone cavity refers to the visible main part of the entire mobile phone; the front part refers to the part close to the folding mechanism, mainly referring to the part related to the structural support, such as: the shell, the middle frame part, the connecting member, etc.), the end plate, and the lever-push card. In detail, a synchronous gear that can rotate on a fixed axis (the axis is parallel to the screen plane) is installed on the mobile phone cavity or the front of the cavity, a lever column is installed or processed near the edge of the synchronous gear, and a hinge suspension lining plate connected to the hinge axis parallel to the hinge axis for supporting the soft base screen (the lining plate is also part of the bottom support for supporting the screen assembly. The screen assembly includes: the outermost protective layer, the OLED display layer, the touch screen component or the touch screen layer, and the bottom layer (hard or soft, and must be soft in the folding part)); 2 transmission gears are installed on each end plate. The gears or the synchronous gears are directly meshed without using transmission gears. An end plate guide groove or guide hole is opened on the end plate, and a hinge shaft or shaft hole for accommodating the synchronous gear and the lever card is provided; the lever card is processed with a lever shaft or shaft hole, a lever hole or a lever groove, and a lever post (in fact, there are two installation positions of the lever shaft and lever post of the lever card: the lever shaft is installed on the end plate, and the lever post is installed on the shell and screen support strip, or the lever shaft is installed on the shell and screen support strip, and the lever post is installed on the end plate, and the movement of the shell and screen support strip of the driven object The specific connection relationship is: the synchronous gear rigidly connected to the mobile phone cavity or the two ends of the front of the cavity (relative to the cavity, it is stationary and non-rotating) is hinged to the hinge shafts of the two end plates, so that the synchronous gear meshes with the transmission gear fixed to the end plate, or the synchronous gear directly meshes to achieve the purpose of synchronous reverse rotation; the fixed lining plate is used to support the mobile phone screen, and the hinge shaft suspension lining plate of the mobile phone screen adjacent to the screen folding area is connected to the mobile phone structure by a hinge shaft parallel to the screen; the lever shaft of the lever card is hinged to the hinge shaft of the end plate, and the same The shifting post fixed with the step gear passes through the arc-shaped end plate shifting groove with an opening greater than 90 degrees on the end plate, and the protruding part is inserted into the shifting hole of the lever shifting card, and the shifting post at the front end of the lever shifting card is inserted into the shifting groove of the shell and screen support strip; the protrusion of the shell and screen support strip is inserted into the guide groove of the end plate to limit its lateral displacement; the end plate limiting structure is used to: on the one hand, block the movable edge of the hinge shaft suspension liner, so that it falls until it is perpendicular to the screen; on the other hand, prevent the shell and screen support strip from moving up to the extreme position, so that it rises to the limit of being flush with the fixed liner.

[0014] Basic operating principle:

[0015] When the two mobile phone cavities are unfolded into a plane, the lever lever card rotates around the hinge shaft 2 by toggling the lever hole, so that the lever lever drives the outer shell and screen support strip to rise to the highest position by inserting the lever lever card slot into the support strip slot, so that the outer shell and screen support strip is flush with the fixed lining plate to form a plane supporting the screen. In addition, when the two mobile phone cavities transition from unfolding into a plane to a folded state, the lever lever card rotates around the hinge shaft by toggling the lever hole, so that the lever lever drives the outer shell and screen support strip to descend to the lowest position by inserting the lever lever card slot into the support strip slot, so that the outer shell and screen support strip blocks the opening formed by the bottom plates of the two mobile phone cavities, and the bent screen enters the trapezoidal space formed by the retreat of the outer shell and screen support strip and the opening of the hinge suspension lining plate (when the screen is folded from flat to fully folded, the corresponding length inside the screen will be reduced due to kinematics). The dimension is at least 1.5 times the thickness of the phone after folding. The space required for the stacked screen can only be obtained from two aspects: first, the movement of the outer shell and screen support strip, and second, the opening of the hinge suspension lining; the screen's own bending force will make the screen hit the hinge suspension lining and the outer shell and screen support strip surface, and its force can push the two hinge suspension linings apart, gaining more space is conducive to the even distribution of the folding curvature, so as not to excessively bend the middle part of the fold to form a screen crease, and the state of the screen after folding well protects the mobile phone screen in the bent state).

[0016] The dual-synchronous axis lever card-push folding screen mobile phone and tablet computer structure is consistent with the appearance of a conventional folding machine. The mobile phone cavity and the bending areas at both ends of the mobile phone cavity use the dual-synchronous axis lever card-push folding mechanism of the present invention. The middle section of the mobile phone screen uses a soft base material as a base, and the outer shell and screen support strip serves as a movable component and also as a part of the outer shell.

[0017] Further: a hinge axis parallel to the screen is connected between the hinge axis suspension lining and the mobile phone structure, and the parallel hinge axis refers to: it is in a non-coplanar position within the plane where the lining plate is fixed or within the mobile phone cavity.

[0018] Further: the shafts or shaft holes on the end plate corresponding to the lever shaft on the lever pull card are two or the same shaft or shaft hole for superposition and use.

[0019] The beneficial effects of the present invention are: the structure of the foldable screen mobile phone is greatly simplified, especially the rotation effect of the hinge shaft suspension lining is increased to further optimize the utilization efficiency of the existing space, the protection of the foldable screen is more thorough, and it is light, thin and beautiful. [Drawings]

[0020] Figure 1 Schematic diagram and exploded diagram of the dual synchronous shaft lever card folding mechanism

[0021] Figure 2A partial enlarged schematic diagram of the dual-synchronous shaft lever card-type folding mechanism

[0022] Figure 3 Schematic diagram of component displacement of dual synchronous axis lever card folding mechanism in the bending state

[0023] Figure 4 Schematic diagram of the appearance structure of a dual-synchronous axis lever card-type folding screen mobile phone and tablet computer

[0024] Description of labels:

[0025] 1 Mobile phone compartment 1

[0026] 2 Cell phone compartment 2

[0027] 3 Synchronous gear

[0028] 4 Shifter 1

[0029] 5 hinge axis 1

[0030] 6 Fixed lining

[0031] 8 hinged shaft suspension lining

[0032] 9 End plate

[0033] 10 Camera hole

[0034] 11 Transmission gear

[0035] 12 End plate guide groove

[0036] 13 hinge shaft 2

[0037] 15 End plate limit structure

[0038] 16 Lever card

[0039] 17 Column 2

[0040] 18. Dial hole

[0041] 19 Lever shaft

[0042] 20 Shell and screen support strip

[0043] 21 Raised support strip

[0044] 22 Support strip groove

[0045] 23 Bending area

[0046] 24 Mobile screen

[0047] 25 Folded screen status

[0048] 26 Exploded view

[0049] 27 hinge shaft and shaft hole

[0050] 28 Mobile phone bottom shell

[0051] 29 Perspective

[0052] 30 End plate arc hole

[0053] 31 Interior View [Specific implementation method]

[0054] The present invention will be further described below with reference to the accompanying drawings in terms of preferred embodiments:

[0055] like Figure 1 , Figure 2 , Figure 3 As shown:

[0056] Figure 1 The exploded view (26) shows the composition and positional relationship of the main components; Figure 2 The perspective view (29) shows the details of the mechanical drive.

[0057] The main components of the dual synchronous shaft lever card folding mechanism include: a mobile phone housing, an end plate, and a lever card. Specifically, the mobile phone housing is equipped with a synchronous gear (3) corresponding to a hinge shaft 1 (5) as a rotation center, a lever post 1 (4) near the edge of the synchronous gear (3), a mobile phone bottom shell plate (28), a fixed lining plate (6), and a hinge shaft suspension lining plate (8) connected to the hinge shaft and the shaft hole (27) parallel to the hinge shaft; two transmission gears (11) are installed on the end plate (9), an end plate guide groove (12), a hinge shaft 2 (13) or a shaft hole, and an end plate limit structure (15); and a lever shaft (19) or a shaft hole, a lever hole (18), and a lever post 2 (17) are processed on the lever card (16). The specific connection relationship is as follows: the synchronous gear (3) rigidly connected to the two ends of the mobile phone cavity 1 (1) and the mobile phone cavity 2 (2) is hinged to the hinge shaft 1 (5) of the respective end plates (9), so that the synchronous gear (3) is meshed with the transmission gear (11) fixed to the end plate to achieve the purpose of synchronous reverse rotation; the fixed lining plate (6) is used to support the mobile phone screen, and the hinge shaft suspension lining plate (8) of the mobile phone screen adjacent to the screen folding area is connected to the mobile phone structure in a hinge shaft parallel to the screen; the lever shaft (19) of the lever card (16) is hinged to the hinge shaft 2 (13) of the end plate, and the lever column 1 (4) fixed to the synchronous gear (3) passes through the end plate (9) After the arc-shaped end plate arc hole (30) with an opening angle greater than 90 degrees is opened, the extended portion is finally inserted into the shifting hole (18) of the lever shifting card (16), and the shifting column 2 (17) of the lever shifting card (16) is inserted into the shifting groove (22) of the support plate strip; the support plate strip protrusion (21) of the shell and screen support plate strip (20) is inserted into the end plate guide groove (12) to limit its lateral displacement; the end plate limiting structure (15) is used to: on the one hand, block the movable edge of the hinge shaft suspension liner (8) so that it falls until it is perpendicular to the screen; on the other hand, prevent the shell and screen support plate strip (20) from moving up to the limit position so that it rises to the limit of being flush with the fixed liner (6).

[0058] Basic operating principle: When the two mobile phone cavities are unfolded into a plane, the lever 1 (4) drives the lever card (16) to rotate around the hinge shaft 2 (13) by driving the lever 2 (17) to insert into the support strip slot (22), thereby driving the shell and screen support strip (20) to rise to the highest position, so that the shell and screen support strip (20) is flush with the fixed lining plate (6), forming a plane supporting the screen. In addition, when the two mobile phone cavities transition from the flat state to the folded state, the lever lever (16) is rotated around the hinge shaft (13) by the lever lever hole (18) so that the lever lever (17) is inserted into the lever groove (22) of the support strip, driving the housing and screen support strip (20) to descend to the lowest position, so that the housing and screen support strip (20) blocks the opening formed by the bottom plates of the two mobile phone cavities, the bent screen enters the housing and screen support strip (20) and the hinge shaft suspension lining (8) is opened. Trapezoidal space (the screen's own bending force will cause the screen to collide with the hinge suspension lining (8) and the shell and screen support strip (20), and its force can push the two hinge suspension linings (8) apart, so that a larger space is gained, which is beneficial to the even distribution of the folding curvature, and the middle part of the fold is not excessively bent to form a screen crease. The folded screen state (25) well protects the mobile phone screen (24) in the bent state); the internal view (31) after the end plate is hidden and the lever is pulled can clearly show that the shell and screen support strip (20) has dropped to the lowest position.

[0059] Figure 4 As shown:

[0060] The structure of the dual-synchronous axis lever card-push folding screen mobile phone and tablet computer is consistent with the appearance of a conventional folding machine. The bending areas (23) at both ends of the mobile phone cavity 1 (1) and the mobile phone cavity 2 (2) use the dual-synchronous axis lever card-push folding mechanism of the present invention. The middle section of the mobile phone screen (24) uses a soft base material as a base, and the shell and screen support strip (20) is a movable part and also a part of the shell. The mobile phone cavity is installed with: a battery, a mainboard, a camera, a microphone, a speaker and peripheral interface devices, etc.; (10) is a camera hole; a decorative cover can also be used to cover the gear mechanism.

Claims

1. A dual-synchronous axis lever card-push-type folding screen mobile phone, including a dual-synchronous axis lever card-push-type folding mechanism, the main components of which include: Left cavity, right cavity, end plate, lever card; characterized in that: a fixed-axis synchronous gear is installed on the left and right cavities, a lever column 1 is installed near the edge of the synchronous gear, and a hinge shaft suspension liner connected to the hinge shaft parallel to the soft base screen is used to lift and support the soft base screen; two synchronous gears are directly meshed or indirectly meshed through two transmission gears; an end plate guide groove is opened on the end plate, and a hinge shaft 2 or an axis hole is also installed on the end plate; a lever shaft or an axis hole, a lever hole, and a lever column 2 are processed on the lever card; the component connection relationship is: with The synchronous gears rigidly connected to the left and right cavities are hinged with the two end plates and then meshed with the transmission gears, or the synchronous gears are directly meshed with each other; the hinge suspension lining of the mobile phone screen adjacent to the screen folding area is hinged with the mobile phone structure in parallel with the screen; the lever axis of the lever card is hinged to the special hinge axis of the end plate, and the lever column 1 fixed relative to the synchronous gear passes through the arc-shaped end plate arc hole on the end plate, and the protruding part is inserted into the lever hole of the lever card, and the lever column 2 of the lever card is inserted into the lever groove of the outer shell and screen support plate. When the left and right cavities are unfolded into a plane, the lever lever card rotates around the hinge axis 2 by toggling the toggle hole, so that the lever lever card rotates around the hinge axis 2, and the lever lever card inserts into the toggle groove of the support plate strip, driving the outer shell and screen support plate strip to rise to the highest position, so that the outer shell and screen support plate strip is flush with the fixed lining plate, forming a plane supporting the screen; in addition, when the left and right cavities transition from the unfolded plane to the folded state, the lever lever card rotates around the hinge axis 2 by toggling the toggle hole, so that the lever lever card inserts into the end face toggle groove of the outer shell and screen support plate strip, driving the outer shell and screen support plate strip to move upward, so that the outer shell and screen support plate strip can be moved upward, and the screen support plate can be moved upward, so that the screen support plate ... The screen-supporting strip descends to the lowest position, so that the shell-and-screen-supporting strip blocks the opening formed by the bottom plates of the left and right cavities, and the bent screen enters the trapezoidal space formed by the retreat of the shell-and-screen-supporting strip and the opening of the hinge suspension lining; at least the middle section of the mobile phone screen uses a soft base material as a substrate, and the shell-and-screen-supporting strip serves as an active functional component and also as a part of the shell; batteries, motherboards, cameras, microphones, speakers and peripheral interface devices are installed inside the left and right cavities.

2. The dual-synchronous-axis lever-type folding-screen mobile phone according to claim 1, wherein the hinge suspension lining plate is connected to the mobile phone structure by a hinge parallel to the screen, and is characterized in that: The hinge axis is in the plane where the fixed lining plate is located.

3. The dual-synchronous axis lever card-push type folding screen mobile phone according to claim 1, wherein the lever card-push is characterized in that: There are two installation positions for the lever shaft and the lever column of the lever card: the lever shaft is installed on the end plate, and the lever column 2 is installed on the shell and screen support strip, or the lever shaft is installed on the shell and screen support strip, and the lever column 2 is installed on the end plate.

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