Flexible screen mobile terminal and hinge and elastic damping structure thereof

Abstract

The utility model provides a flexible screen mobile terminal and hinge and elastic damping structure, including rotatory connecting arm and casing fixed block, the casing fixed block passes through the slot and rotatory connecting arm slide connection, the slot has the slot bottom surface and two side guide rail, rotatory connecting arm both sides insert into the guide rail, and the slot bottom surface is equipped with the slot bottom surface. The rotary connecting arm is provided with a matching surface opposite to the groove bottom surface, an elastic component is detachably mounted between the matching surface and the groove bottom surface, and shaking between the two sides of the rotary connecting arm and the guide rail is eliminated or reduced and sliding damping is increased through the squeezing effect of the elastic component; moreover, the elastic component is configured to be disengaged and matched, and when the flexible screen mobile terminal is close to be folded and unfolded, the damping effect of the elastic component disappears or is greatly reduced. The motion gap on the sliding structure is eliminated, meanwhile, the hovering torsion of the hinge is improved, and particularly for the hinge of the up-down folding flexible screen, a solution for improving the hovering torsion of the hinge under the scene with the limited width is provided.

Description

Technical Field

[0001] The utility model relates to a flexible screen mobile terminal and its hinge. Background Art

[0002] The up-and-down folding flexible screen terminal is popular in the market because of its small size and convenient carrying, and it can also take into account the characteristics of the large screen of current smart phones after being unfolded upwards. For the corresponding hinge design, it is necessary to consider being as light and small as possible to avoid occupying the stacking space of other components of the device. Therefore, two half-axis components are usually used to form a hinge. Currently, the mainstream hinge adopts a rocker-slider mechanism using a virtual axis and a gear transmission pair. Since a sliding pair is introduced, there will inevitably be a large movement gap in the movement of the entire hinge, which affects the feel.

[0003] Especially for the up-and-down folding flexible screen terminal, due to the limited width, its hinge can usually only arrange two half-axis components, and it is impossible to reduce the movement gap by multiple half-axes (for example, the left-and-right folding hinge can arrange three half-axes due to sufficient space, so as to offset the gaps with each other and reduce the movement gap of the whole machine), which affects the feel of the whole machine. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an elastic damping structure on a flexible screen hinge to eliminate the movement gap on the sliding structure and improve the hinge hovering torque at the same time. Especially for the up-and-down folding flexible screen hinge, a solution to improve the hinge hovering torque in a scenario with limited width is provided. For this purpose, the utility model adopts the following technical solutions:

[0005] An elastic damping structure on a hinge of a flexible screen mobile terminal, including a rotating connecting arm and a housing fixing block. The rotating connecting arm is rotatably connected to a middle base in the hinge. The housing fixing block is slidably connected to the rotating connecting arm through a groove. The groove has a groove bottom surface and two side guide rails. Both sides of the rotating connecting arm are inserted into the guide rails. It is characterized in that the rotating connecting arm has a mating surface facing the groove bottom surface, and an elastic component is detachably installed between the mating surface and the groove bottom surface. Through the squeezing action of the elastic component, the shaking between both sides of the rotating connecting arm and the guide rails is eliminated or reduced, and the sliding damping is increased; and, the elastic component is configured to be disengaged, and when the flexible screen mobile terminal is close to folding and close to unfolding, the damping effect of the elastic component disappears or is greatly reduced.

[0006] On the basis of adopting the above technical solutions, the utility model can also adopt the following further technical solutions, and these further technical solutions will be combined and used:

[0007] The elastic component is detachably installed on the housing fixing block, or detachably installed on the rotating connecting arm.

[0008] The elastic component is a V-shaped spring sheet, and the V-shaped spring sheet has a bottom support surface located at the bottom of the V shape and top support surfaces located on both sides of the V shape.

[0009] A convex column is arranged on the bottom surface of the groove, and the bottom supporting surface of the V-shaped spring piece is sleeved on the convex column; alternatively, a positioning groove is arranged on the mating surface, and the two sides of the top of the V-shaped spring piece are clamped in the positioning groove; the top supporting surface of the V-shaped spring piece corresponds to the mating surface, and the bottom supporting surface of the V-shaped spring piece corresponds to the bottom surface of the groove.

[0010] The elastic component is detachably mounted on the housing fixing block in a rotation-proof manner, or is detachably mounted on the rotating connecting arm in a rotation-proof manner.

[0011] The disengagement utilizes the casing fixing block to slide out to one end of the V-shaped spring piece to disengage from the mating surface to form a seesaw effect, so that the damping effect of the elastic component disappears or is greatly reduced, or a pit is set on the bottom surface of the groove, so that when the casing fixing block slides out to the bottom supporting surface of the V-shaped spring piece and falls into the groove, the damping effect of the elastic component disappears or is greatly reduced.

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

[0013] Furthermore, the first rotating connection structure and the second rotating connection 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 has two left and right hinges connecting the upper and lower shells without a middle hinge, and is characterized in that one of the left and right hinges is set as the above-mentioned hinge.

[0015] Due to the adoption of the technical solution of the utility model, the utility model provides an elastic damping structure on the flexible screen hinge without occupying the axial space. The elastic force of the elastic component can eliminate the movement gap of the sliding pair between the rotating connecting arm and the housing fixed block, reduce or eliminate the internal shaking of the sliding pair, thereby improving the gap control effect of the whole machine and improving the hinge hovering torque. In particular, for the upper and lower folding flexible screen hinge, a solution for improving the hovering torque in a width-limited scenario is provided. The utility model is provided with a detachable fixing structure, which does not require welding technology and simplifies the assembly process. The spring damping will not affect the locking force generated by the cam on the hinge. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Exploded view of the structure of Embodiment 1 of the hinge of the present utility model.

[0017] Figure 2 Schematic view of the structure of Embodiment 1 of the hinge of the present utility model.

[0018] Figure 3 Evolution diagram of the mating state of Embodiment 1 of the hinge of the present utility model during the opening or closing process of the hinge.

[0019] Figure 4 Exploded view of the structure of Embodiment 2 of the hinge of the present utility model.

[0020] Figure 5 Evolution diagram of the mating state of Embodiment 2 of the hinge of the present utility model during the opening or closing process of the hinge.

[0021] Figure 6 Opening and closing demonstration diagram of the flexible screen mobile terminal embodiment of the present utility model with up and down folding. Detailed implementation manners

[0022] Referring to the accompanying drawings. An elastic damping structure on a hinge of a flexible screen mobile terminal provided by the present utility model includes a rotating connection arm 1 and a housing fixing block 2. The rotating connection arm 1 is rotatably connected to a base 100 in the hinge. The housing fixing block 2 is slidably connected to the rotating connection arm 1 through a groove 20. The groove 20 has a groove bottom surface 21 and two side guide rails 22. Both sides of the rotating connection arm 1 are inserted into the guide rails 22. The rotating connection arm 1 has a mating surface 11 facing the groove bottom surface 21. An elastic component is detachably installed between the mating surface 11 and the groove bottom surface 21. The shaking between both sides of the rotating connection arm 1 and the guide rails is eliminated and the sliding damping is increased through the squeezing action of the elastic component. And, the elastic component is configured to be disengaged, and when the flexible screen mobile terminal is close to being folded and close to being unfolded, the damping effect of the elastic component disappears or is greatly reduced, and it will not affect the locking force generated by the cam on the hinge.

[0023] As a preferred implementation manner, the elastic component adopts a V-shaped elastic sheet 3. The V-shaped elastic sheet 3 has a bottom support surface 31 at the bottom of the V shape and top support surfaces 32 at both sides of the V shape.

[0024] The V-shaped elastic piece 3 is detachably mounted on the housing fixing block 2 or on the rotating connecting arm 1. When it is detachably mounted on the housing fixing block 2, that is, Embodiment 1 of the present invention, preferably, a convex column 23 is provided on the bottom surface 21 of the groove, and the bottom support surface 31 of the V-shaped elastic piece 3 is sleeved on the convex column. When it is detachably mounted on the rotating connecting arm 1, that is, Embodiment 2 of the present invention, preferably, a positioning groove 12 is provided on the mating surface 11, and both sides of the top of the V-shaped elastic piece 3 are stuck in the positioning groove 12 and cannot slide along with the housing fixing block 2. In application, the top support surface 32 of the V-shaped elastic piece 3 corresponds to the mating surface 11, and the bottom support surface 31 of the V-shaped elastic piece 3 corresponds to the bottom surface 21 of the groove.

[0025] A preferred embodiment is that the V-shaped elastic piece 3 is detachably mounted on the housing fixing block 2 in a non-rotatable manner or on the rotating connecting arm 1 in a non-rotatable manner. This can be achieved by the two sides of the V-shaped elastic piece being restricted by the two side walls of the groove 20 to prevent rotation, or by the flat surface on the convex column 23 to restrict rotation, or by being restricted by the positioning groove 12 to prevent rotation.

[0026] One of the major technical effects of using a V-shaped elastic piece as an elastic component is that it is very easy to achieve the disengagement fit at both ends of the stroke. When the V-shaped elastic piece is detachably mounted on the housing fixing member, that is, Embodiment 1, see Figure 3 , the disengagement fit utilizes the housing fixing shell 2 to slide out until one end of the V-shaped elastic piece 3 disengages from the mating surface 11 to form a seesaw effect (depending on whether the flexible screen mobile terminal is folded or unfolded, it is different ends that disengage from the mating surface 11), causing the damping effect of the elastic component to disappear or be greatly reduced. Or, when the V-shaped elastic piece 3 is detachably mounted on the rotating connecting arm, that is, Embodiment 2, see Figure 5 , a pit 24 is provided on the bottom surface 21 of the groove, so that when the housing fixing block 2 slides out until the bottom support surface 31 of the V-shaped elastic piece falls into the pit 24, the damping effect of the elastic component disappears or is greatly reduced.

[0027] Referring to Figures 1-5 , a hinge for a flexible screen mobile terminal provided by the present invention includes a first rotating connection structure 101 and a second rotating connection structure 102. The above-mentioned elastic damping structures are respectively provided in the first rotating connection structure and the second rotating connection structure, and the axes 41 and 42 of the rotating connecting arms of the first rotating connection structure and the second rotating connection structure are parallel. A preferred embodiment is that the first rotating connection structure 101 and the second rotating connection structure 102 are symmetrically arranged.

[0028] Among them, the rotating connecting arm can be the synchronous swing arm in the hinge, and a gear synchronous reverse rotation connecting structure 200 is provided between the rotating connecting arms of the first rotating connecting structure and the second rotating connecting structure. A torsion mechanism 300 composed of a disc spring, a cam, and a friction plate is also provided on the shafts 41 and 42 to provide rotational damping. (In the hinge, since the sliding itself is a linkage movement associated with rotation, the sliding damping provided by the elastic component can be converted into rotational damping to increase the rotational damping).

[0029] Referring to Figure 6 , the present utility model provides a flexible screen mobile terminal applying the above hinge, which is an up-and-down folding flexible screen mobile terminal. Two left and right hinges 501 and 502 are connected between the upper and lower shells 401 and 402. Since the width of the up-and-down folding flexible screen mobile terminal is small, the middle third hinge is not provided. Moreover, the elastic damping structure of the present utility model is provided in the two left and right hinges 501 and 502. In this way, not only can the possible shaking caused by the clearance of the sliding pair be avoided, but also, since the elastic damping structure of the present utility model does not occupy the axial space but is perpendicular to the axis, it can increase the rotational damping without generating additional axial occupied space. In the past, generally speaking, if the rotational damping needs to be increased, it is necessary to increase the number of disc spring pieces or increase the length of the reed pipe (i.e., the axial length of the reed pipe) axially, which brings an additional burden to the already limited structural layout conditions in the width direction of the up-and-down folding flexible screen mobile terminal.

[0030] The above are only specific embodiments of the present utility model, but the structural features of the present utility model are not limited thereto. Any changes or modifications made by those skilled in the art within the scope of the present utility model are covered by the protection scope of the present utility model.

[0031] It should be noted that the terms "including" and "having" and any variations thereof in the description, claims, and drawings of the present utility model are intended to cover non-exclusive inclusion. The terms "installed", "set", "provided with", "connected", "connected to", and "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or there can be internal communication between two devices, components, or parts. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0032] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "one end", "the other end", "outer side", "inner side", "horizontal", "end portion", "length", "outer end", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. The terms "first" and "second" are also used only for simplicity in description and do not indicate or imply relative importance.

Claims

1. An elastic damping structure on the hinge of a flexible screen mobile terminal, comprising a rotating connecting arm and a housing fixing block, the rotating connecting arm is rotatably connected to the middle base in the hinge, the housing fixing block is slidably connected to the rotating connecting arm through a groove, the groove has a groove bottom surface and two side guide rails, and both sides of the rotating connecting arm are inserted into the guide rails, characterized in that The rotating connecting arm has a mating surface facing the bottom surface of the groove. An elastic member is detachably mounted between the mating surface and the bottom surface of the groove. The shaking between the two sides of the rotating connecting arm and the guide rail is eliminated or reduced, and the sliding damping is increased through the squeezing action of the elastic member. Moreover, the elastic member is configured to be disengaged, and when the flexible screen mobile terminal approaches folding and approaching flattening, the damping effect of the elastic member disappears or is greatly reduced.

2. The elastic damping structure on the hinge of the flexible screen mobile terminal according to claim 1, wherein The elastic member is detachably mounted on the housing fixed block or detachably mounted on the rotating connecting arm.

3. The elastic damping structure on the hinge of the flexible screen mobile terminal according to claim 1, characterized in that The elastic member is a V-shaped spring piece. The V-shaped spring piece has a bottom support surface at the bottom of the V shape and top support surfaces on both sides of the V shape.

4. The elastic damping structure on the hinge of a flexible screen mobile terminal according to claim 3, characterized in that Convex columns are provided on the bottom surface of the groove, and the bottom support surface of the V-shaped spring piece is sleeved on the convex columns. Alternatively, positioning grooves are provided on the mating surface, and both sides of the top of the V-shaped spring piece are stuck in the positioning grooves. The top support surface of the V-shaped spring piece corresponds to the mating surface, and the bottom support surface of the V-shaped spring piece corresponds to the bottom surface of the groove.

5. The elastic damping structure on the hinge of a flexible screen mobile terminal according to claim 2 or 3, characterized in that The elastic member is detachably mounted on the housing fixed block in a rotation-preventing manner or detachably mounted on the rotating connecting arm in a rotation-preventing manner.

6. The elastic damping structure on the hinge of a flexible screen mobile terminal according to claim 4, characterized in that The disengagement utilizes the housing fixed block to slide out so that one end of the V-shaped spring piece disengages from the mating surface to form a seesaw effect, causing the damping effect of the elastic member to disappear or be greatly reduced. Alternatively, a pit is provided on the bottom surface of the groove, so that when the housing fixed block slides out and the bottom support surface of the V-shaped spring piece falls into the groove, the damping effect of the elastic member disappears or is greatly reduced.

7. A hinge for a flexible screen mobile terminal, comprising a first rotational connection structure and a second rotational connection structure, characterized in that The first rotating connection structure and the second rotating connection structure are respectively provided with the elastic damping structure described in claim 1, 2, 3, 4, 5 or 6, and the axes of the rotating connecting arms of the first rotating connection structure and the second rotating connection structure are parallel.

8. The flexible screen mobile terminal hinge according to claim 7, characterized in that The first rotating connection structure and the second rotating connection structure are symmetrically arranged.

9. A flexible screen mobile terminal, which is an up-and-down folding flexible screen mobile terminal. There are two left and right hinges connected between its upper and lower shells, and no middle hinge is provided. It is characterized in that The left and right hinges are the hinges described in claim 7 or 8.

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