Flexible screen mobile terminal and hinge and elastic damping structure thereof

Abstract

The utility model provides an elastic damping structure on a hinge of a flexible screen mobile terminal, the hinge comprises a rotary connecting arm and a casing fixing block, the casing fixing block and the rotary connecting arm are in sliding connection through a sliding guide structure, the sliding guide structure comprises a plate part and a block part, the block part is provided with a front surface and guide rails located on two sides of the front surface, and the plate part and the block part are in sliding connection. The elastic damping structure comprises a plate part and a block part, the plate part is located on the front face, the plate part is connected with guide rails on the two sides in a sliding mode, the block part is provided with an installation guide hole in the front face, the elastic damping structure further comprises a disc spring and a cushion block, and the disc spring is located in the installation guide hole. The cushion block is in guide fit with the mounting guide hole and is supported by a disc spring to abut against the plate part, and the disc spring is located in the mounting guide hole in a compressed mode. According to the utility model, the movement clearance on the sliding structure can be eliminated, the use hand feeling is improved, and meanwhile, larger damping force can be obtained and the output is more constant, so that the yield of products can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a flexible screen mobile terminal and hinge thereof. BACKGROUND

[0002] The up-down folding flexible screen terminal is small in size, convenient to carry, can also consider the characteristics of the current large screen of the smart phone after being unfolded upward, and is welcomed by the market. Corresponding hinge design needs to consider being as light and small as possible to avoid occupying the stacking space of other components of the equipment. Therefore, two half shaft assemblies are usually used to form a hinge. The current mainstream hinge adopts a rocker slider mechanism using virtual shaft and gear transmission pair. Because the sliding pair is introduced, there is inevitably a large movement gap in the whole hinge movement, which affects the hand feeling.

[0003] Especially for the up-down folding flexible screen terminal, because of the limited width, the hinge thereof can only be arranged with two half shaft assemblies, and cannot reduce the movement gap by multiple half shafts (for example, the left-right folding hinge can be arranged with three half shafts to offset the gap to reduce the movement gap of the whole machine), which affects the hand feeling of the whole machine.

[0004] The damper mechanism can be used to solve the movement gap problem, but for the folding flexible screen mobile terminal, the damper mechanism will also produce a certain range of movement gap between parts. How to adapt to this gap range in the thin and precise structure to obtain a damping force that is not only large and uniform but also has a large gap range to improve the yield is a problem to be solved. CONTENT OF THE UTILITY MODEL

[0005] The utility model aims to provide an elastic damping structure on a flexible screen hinge, eliminate the movement gap on the sliding structure, improve the use hand feeling, and support a larger damping force and more constant output to help improve the product yield. To this end, the utility model adopts the following technical solutions:

[0006] The application discloses a flexible screen mobile terminal hinge elastic damping structure, which comprises a rotating connecting arm and a shell fixing block, the rotating connecting arm is connected with a middle base in the hinge, and the shell fixing block is connected with the rotating connecting arm through a sliding guide structure.

[0007] On the basis of the above technical scheme, the utility model further can adopt the following further technical scheme, will use these further technical schemes combination:

[0008] The disc spring is detachably installed in the installation guide hole.

[0009] The installation guide hole comprises a large hole part at the top of the hole and a small hole part at the bottom of the large hole, the disc spring is located in the large hole, the bottom of the pad block is provided with a guide column, the guide column is inserted into the small hole part through the center hole of the disc spring, and the guide column and the small hole part are guided and matched.

[0010] The pad block is a wear-resistant part and is more wear-resistant than the plate part in contact with the pad block.

[0011] When the disc spring is assembled in the elastic damping structure, the installation force value of the disc spring is above 93% of the maximum force value.

[0012] According to the second aspect of the utility model, the utility model further provides a flexible screen mobile terminal hinge, which comprises a first rotating connecting structure and a second rotating connecting structure, characterized in that the first rotating connecting structure and the second rotating connecting structure are respectively provided with the above-mentioned elastic damping structure, and the shafts of the rotating connecting arms of the first rotating connecting structure and the second rotating connecting structure are parallel.

[0013] Further, the first rotating connecting structure and the second rotating connecting structure are symmetrically arranged.

[0014] According to the third aspect of the utility model, the utility model also provides a flexible screen mobile terminal, which is a flexible screen mobile terminal that folds up and down, and the upper shell and the lower shell are connected by two left and right hinges without a middle hinge. It is characterized in that the above-mentioned hinge is set in the left and right hinges, and the upper shell and the lower shell are respectively connected to the casing fixing blocks on the first rotating connection structure and the second rotating connection structure.

[0015] Due to the adoption of the technical solution of the present invention, the present invention provides an elastic damping structure on the hinge of the flexible screen without occupying axial space. The elastic damping structure adopts a disc spring and a tightening pad. It has an approximately constant elastic force output for different gaps and a large elastic force output, which can reach more than 20N. The double half-axis hinge brings an overall stable torque of 30-40N*mm, which is used to improve the virtual position and increase the hovering torque. The matching tolerance range is wide, which helps to improve the yield. In particular, for the upper and lower folding flexible screen and its hinge, a solution for improving the hovering torque in width-limited scenarios is provided. The setting of the present invention does not require a welding process, which simplifies the assembly process. The damping structure will not affect the locking force generated by the cam on the hinge. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is an exploded view of the structure of hinge embodiment 1 of the present invention.

[0017] Figure 2-1 、 Figure 2-2 They are schematic diagrams of the hinge embodiment of the present invention in the corresponding flattened state and folded state respectively.

[0018] Figure 3-1 、 Figure 3-2 They are cross-sectional views of the hinge embodiment of the present invention in the corresponding flattened state and folded state respectively.

[0019] Figure 4-1 、 Figure 4-2 They are Figure 3-1 A part and Figure 3-2 Magnified view of part B.

[0020] Figure 5 This is a demonstration diagram of the opening and closing of an embodiment of the up-and-down foldable flexible screen mobile terminal of the present invention.

[0021] Figure 6 This is a compression height-force curve of a disc spring with a height of 0.35mm and an outer diameter of 4.0mm in a free state. The horizontal axis is the compression height of the disc spring (that is, the compression distance), and the vertical axis is the elastic force output by the disc spring.

[0022] Figure 7 for Figure 6The disc spring shown is applied to the elastic damping structure of the present invention, and shows the torque performance during hinge opening and closing when the installation force is above 93% of its maximum force. DETAILED DESCRIPTION

[0023] Referring to the accompanying drawings, the utility model provides an elastic damping structure on a hinge of a flexible screen mobile terminal, the hinge comprising a rotating connecting arm 1 and a housing fixing block 2, the rotating connecting arm 1 being rotatably connected to a middle base 100 in the hinge, the housing fixing block 2 being slidably connected to the rotating connecting arm 1 via a sliding guide structure, the sliding guide structure comprising a plate portion 11 and a block portion, the plate portion 11 and the block portion being respectively located on one of the rotating connecting arm and the housing fixing block and on the other thereof, the block portion being provided with a front face 21 and guide rails 22 located on both sides of the front face, the plate portion 11 being located on the front face 21, the plate portion 11 being slidably connected to the guide rails 22 on both sides, the block portion being provided with an installation guide hole 23 on the front face 21, the elastic damping structure further comprising a disc spring 3 and a pad 4, the disc spring 3 being located in the installation guide hole 23, the pad 4 being guided and matched with the installation guide hole 23 and supported by the disc spring 3 to press against the plate portion 11, and the disc spring 3 being compressed in the installation guide hole 23. By tightening the plate portion 11 , shaking caused by the gap between the plate portion 11 and the guide rail 22 is eliminated and sliding damping is increased.

[0024] As a preferred embodiment, the plate portion is located on the rotating connecting arm, and the block portion is located on the casing fixing block.

[0025] By using the compressed disc spring 3, the elastic force output can reach more than 20N, which is far greater than the solution using the spring sheet. Figure 6 When the maximum force is above 93%, the output elastic force does not change much (see Figure 6 The vertical coordinate value changes between the two middle points of the hinge), can provide an approximately constant elastic force output, overcoming the shortcomings of the spring solution such as small force value, fast attenuation and poor reliability. At this time, the corresponding compression change (i.e. the allowable part size error) is 0.06mm, which can provide a large force value of 20N±1N with minimal fluctuation under the assembly tolerance of ±0.03mm, which is beneficial to the overall torque stability of the hinge; the double half-axis hinge brings an overall stable torque of 30-40N*mm (such as Figure 7 As shown, the horizontal axis is the opening and closing angle of the hinge, and the vertical axis is the torque it outputs), which is used to improve the virtual position and increase the hovering torque (in the hinge, since sliding itself is a linked motion associated with rotation, the high and constant sliding damping provided by the utility model can also play a role in increasing the hovering torque).

[0026] For the installation of the disc spring 3, a preferred embodiment is that the disc spring 3 is detachably installed in the installation guide hole 23, such as directly placed in the installation guide hole 23.

[0027] A preferred embodiment of the installation guide hole is that it comprises a large hole part at the top of the hole and a small hole part 232 at the bottom of the large hole, the disc spring 3 is located in the large hole 231, the bottom of the pad 4 is provided with a guide column 41, the guide column 41 is inserted into the small hole part 232 through the center hole of the disc spring 3, and the guide column 41 and the small hole part 232 are guided and matched.

[0028] The pad 4 is a wear-resistant part and is more wear-resistant than the plate part 11 in contact with it.

[0029] The rotating connecting arm 1 can be a synchronous swing arm in a hinge, and a gear synchronous reverse rotating connecting structure 200 is adopted to connect between the rotating connecting arm 1 of the first rotating connecting structure (which can be regarded as a half shaft hinge) and the rotating connecting arm 1 of the second rotating connecting structure (another half shaft hinge), and the first rotating connecting structure and the second rotating connecting structure are respectively provided with a rotating connecting arm and a rotating connecting arm shaft.

[0030] Referring to Figure 5 , the utility model provides a flexible screen mobile terminal of application above -mentioned hinge, it is up and down folding flexible screen mobile terminal, the left and right two hinges 101, 102 are connected between upper casing 301, lower casing 302, because the width of up and down folding flexible screen mobile terminal is small and not set up the third hinge in the middle, and, the left and right two hinges 101, 102 all are formed by first rotating connecting structure (it can be regarded as a half shaft hinge) and second rotating connecting structure (another half shaft hinge), set up above -mentioned utility model elastic damping structure in hinge 101, 102, like this, not only can avoid the possible shaking of sliding pair gap, and, because the utility model's elastic damping structure does not occupy axial space but is perpendicular to axial, therefore it can improve the hovering torque under the condition of not generating additional axial occupation space.

[0031] The left and right rotating plates in the flexible screen mobile terminal are 401, which are used to form a curved bulging part accommodating the middle part of the flexible screen when the flexible screen mobile terminal is folded, the rotating plates 401 are rotatably connected with the housing fixing block 2 through the rotating connecting structure 402 (composed of a circular arc guide rail and a circular arc sliding block) and rotatably connected with the guide pin 12 on the rotating connecting arm 1 through the guide groove 403.

[0032] The above only is the specific embodiment of the utility model, but the structural features of the utility model are not limited to this, any person skilled in the art makes the change or the modification in the field of the utility model, and it is covered in the protection scope of the utility model.

[0033] It should be noted that the terms "comprising" and "having" and any variations thereof in the description and the claims and the above drawings are intended to cover both non-exclusive inclusion and the terms "mounting", "setting", "provided with", "connecting", "connected", "sleeved" should be understood broadly. For example, it can be fixedly connected, detachably connected, or integrally configured; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediate medium, or it can be internal communication between two devices, elements or components. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0034] In the description of the utility model, it should be understood that the orientation or positional relationship indicated by the terms "one end", "the other end", "outer side", "inner side", "horizontal", "end", "length", "outer end", "left", "right" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. The words "first", "second" are only used for the convenience of description, and do not indicate or imply relative importance.

Claims

1. A flexible screen mobile terminal hinge elastic damping structure, the hinge comprising a rotating connecting arm and a case fixing block, the rotating connecting arm being rotatably connected with a middle base in the hinge, and the case fixing block being slidably connected with the rotating connecting arm through a sliding guide structure, characterized in that, The sliding guide structure comprises a plate part and a block part, the plate part and the block part are respectively located on one of the rotating connecting arm and the case fixing block and the other of the rotating connecting arm and the case fixing block, the block part is provided with a front surface and guide rails located on both sides of the front surface, the plate part is located on the front surface, the plate part is in sliding connection with the guide rails on both sides, the block part is provided with a mounting guide hole on the front surface, the elastic damping structure further comprises a disc spring and a pad, the disc spring is located in the mounting guide hole, the pad is in guide cooperation with the mounting guide hole and is supported by the disc spring to tightly press the plate part, and the disc spring is compressed in the mounting guide hole. 2.The elastic damping structure on a flexible screen mobile terminal hinge of claim 1, wherein, The disc spring is detachably mounted in the mounting guide hole. 3.The elastic damping structure on a flexible screen mobile terminal hinge of claim 1, wherein, The mounting guide hole comprises a large hole part located at the top of the hole and a small hole part located at the bottom of the large hole, the disc spring is located in the large hole, the bottom of the pad is provided with a guide column, the guide column is inserted into the small hole part through the center hole of the disc spring, and the guide column and the small hole part are in guide cooperation. 4.The elastic damping structure on a flexible screen mobile terminal hinge of claim 1, wherein, The pad is a wear-resistant part and is more wear-resistant than the plate part in contact with the pad. 5.The elastic damping structure on a flexible screen mobile terminal hinge of claim 1, wherein, When the disc spring is assembled in the elastic damping structure, the mounting force value of the disc spring is more than 93% of the maximum force value of the disc spring.

6. The elastic damping structure on a flexible screen mobile terminal hinge according to claim 1, 2, 3 or 4, wherein The plate part is located on the rotating connecting arm, and the block part is located on the case fixing block. 7.A flexible screen mobile terminal hinge comprising a first rotation connection structure and a second rotation connection structure, characterized in that, The first rotating connecting structure and the second rotating connecting structure are respectively provided with the elastic damping structure as claimed in any one of claims 1-6, and the shafts of the rotating connecting arms of the first rotating connecting structure and the second rotating connecting structure are parallel.

8. The hinge of claim 7, wherein The first rotating connecting structure and the second rotating connecting structure are symmetrically arranged. 9.A flexible screen mobile terminal, which is an up-and-down folding flexible screen mobile terminal, having two hinges connected between an upper case and a lower case without an intermediate hinge, characterized in that, The left and right hinges are provided with the hinges as claimed in claim 7 or 8, and the upper shell and the lower shell are respectively connected with the case fixing blocks on the first rotating connecting structure and the second rotating connecting structure.

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