Hinge device and display device comprising same

Abstract

The utility model provides a hinge device and a display device formed by the hinge device, which are characterized in that a plurality of bracket units which are arranged in parallel at equal intervals are combined on one surface side of a flexible sheet which can be elastically bent, a plurality of pivots are respectively embedded on the bracket units, and a plurality of first torsion sheets are respectively provided with first shaft holes and first long shaft holes; the plurality of second torsion sheets are respectively provided with a second shaft hole corresponding to the first long shaft hole and a second long shaft hole corresponding to the first shaft hole, and the second torsion sheets and the first torsion sheets are arranged in an overlapping manner by penetrating and pivoting the pivots in series; when the flexible sheet responds to external force operation to change the movable state, the support unit can synchronously link the pivots to move in the first long shaft hole and the second long shaft hole so as to adapt to the connection length change generated by the first torsion sheet and the second torsion sheet along with the movement of the flexible sheet. A flexible screen is combined on one surface side, far away from the support units, of the flexible sheet, so that a display device can be formed.

Description

Technical Field

[0001] The utility model relates to a hinge device and a display device composed of the hinge device, and in particular to a hinge device which can be synchronously bent and positioned in a fully extended and bent state, and can effectively prevent gravity sagging when fully extended, and a display device composed of the hinge device. Background Art

[0002] As wrist-type flexible screens are gradually widely used, various corresponding different pivot torque mechanisms are also disclosed; for example, China's invention announcement No. CN 111556687B discloses a cover and a smart bracelet, which mainly has a synchronization component between a shell and a cover that are combined with each other, wherein the shell has a first shell, two third shells and a plurality of second shells that are arranged in parallel with each other, and the cover has a first cover, two third covers and a plurality of second covers, which are respectively combined with the first shell, the third shell and the second shell, and the synchronization component has a plurality of partially overlapping and staggered hinge bases, each hinge base is provided with an axis component, which can respectively penetrate the first, second and third hinge groups and damping chains that are staggered with each other, and the damping chain has A plurality of partially overlapping and staggered strips are provided on each strip, each of which is provided with an elongated damping groove and an axial hole, and is respectively fitted on adjacent axial components. The damping groove has a first and a second position groove at both ends, and a notch open to the outside is provided at one end close to the first position groove. The damping groove is used to clamp the axial component to generate a resistance (torque) force during pivoting. When the synchronous component is in a fully extended state, each axial component is located in the first position groove, and when the synchronous component is in a fully bent state, each axial component is located in the second position groove, so as to absorb the change in the reduction of the inner length of the synchronous component.

[0003] The above structure has the following disadvantages in practical application:

[0004] 1. When the above-mentioned wrist-type flexible screen (or smart bracelet) is used, it is mostly necessary to unfold the flexible screen into a flat state so as to touch the flexible screen to operate various functions. However, the damping grooves of each strip body of the damping chain and the shaft component only have a simple torsional force (friction resistance) effect, and lack active guidance and locking functions at specific angles (completely unfolded flat or fully bent); therefore, not only can the flexible screen not be positioned when it is fully bent or fully extended, but also when force is applied to touch the flatly unfolded flexible screen, the damping chain is easily unable to withstand the force, causing the flexible screen to bend and deform, which directly affects the user's operation of the flexible screen and causes serious application deficiencies.

[0005] 2. Since the shell is formed by connecting the first, second and third shells with flat top surfaces, when the shell is bent, a bent pointed convex portion will be formed at the joint connection portion between the first, second and third shells; such an uneven pointed convex portion will not only affect the flatness of the flexible screen arranged on the top surface of the shell, but more seriously will cause wear and damage to the bottom of the flexible screen.

[0006] 3. Since the adjacent articulated bases of the synchronization component are respectively connected to each other at local parts to form a movable connection, the adjacent articulated bases will not only generate greater friction resistance during the movement; at the same time, the adjacent articulated bases are very likely to get stuck at certain specific angles when they are telescopic and bending, affecting the smoothness of the overall expansion or bending operation.

[0007] 4. Since the strips of the damping chain are linked only by the torsion (friction resistance) between the damping groove and the shaft component, when the shell begins to bend, the first, second, and third shells at various locations are often difficult to maintain synchronous bending, which can easily cause uneven bending radians at various locations of the shell, affecting the refinement and overall quality of the product.

[0008] In view of the above-mentioned shortcomings of the pivot torque mechanism commonly used in wrist-type flexible screens in actual applications, the creator has studied ways to improve these shortcomings, and finally produced the present utility model. Utility Model Content

[0009] The main purpose of the utility model is to provide a hinge device, which is combined with a plurality of bracket units arranged in parallel and at equal intervals on one side of a flexible sheet that can be elastically bent, and a plurality of pivots are respectively embedded in at least one end of each of the bracket units, and a plurality of first torque sheets are respectively provided with a first shaft hole and a first long axis hole, and a plurality of second torque sheets are respectively provided with a second shaft hole corresponding to the first long axis hole and a second long axis hole corresponding to the first shaft hole, and each pivot is penetrated and pivoted in series, so that each second torque sheet and each first torque sheet are arranged in an overlapping manner, and the first and second long axis holes are respectively provided with a stopper; when the flexible sheet responds to an external force operation By changing the active state, the flexible piece and each bracket unit can synchronously link each pivot to move in the first and second long axis holes to adapt to the change in the connection length between the first and second torsion pieces caused by the movement of the flexible piece, and cooperate with each pivot to form an interference effect with each stopper in the first and second long axis holes, so that a self-locking or positioning mechanism is established between the first and second torsion pieces, and when the flexible piece is fully extended, each pivot can locally interfere with the first and second axis holes, so that each pivot can be acted upon by each torsion piece to push the flexible piece to generate a force to keep it straight, so that the flexible piece has the structural strength required to withstand the operating force.

[0010] Another object of the utility model is to provide a hinge device, wherein the first and second long axis holes are respectively provided with protruding first and second arc-shaped convex parts at the middle parts, and the first and second arc-shaped convex parts can form the first and second front spaces close to the first and second axis holes, and the first and second rear spaces away from the first and second axis holes inside the first and second long axis holes, respectively, and the first and second front stop parts and the first and second rear stop parts are respectively provided on the first and second arc-shaped convex parts, which correspond to the first and second front spaces and the first and second rear spaces respectively; by using the pivot to move in the first and second front spaces or the first and second rear spaces respectively, and by using the first and second front stop parts or the first and second rear stop parts to form a stop positioning, the flexible sheet can be positioned at different positions of full bending or full extension respectively.

[0011] Another object of the present utility model is to provide a hinge device, wherein each pivot is provided with a flat surface, and the first and second axial holes are provided with first and second straight edges respectively. When the flexible sheet is fully extended, the flat surface of each pivot is rotated to a position of partial interference with the first and second straight edges respectively, so that each pivot can link the flexible sheet to generate a force to keep it straight.

[0012] Another object of the present invention is to provide a display device composed of the above-mentioned hinge device, wherein a flexible screen is attached to a surface side of the flexible sheet away from each of the bracket units, so that the flexible screen can be unfolded or bent synchronously with the flexible sheet, and the flexible screen can be supported by the flexible sheet and have a structural strength to withstand operational touch pressure.

[0013] The utility model provides a hinge device, characterized by comprising:

[0014] An elastically bendable flexible sheet;

[0015] A bracket assembly having a plurality of equally spaced and parallel elongated bracket units, each bracket unit being coupled to a surface side of the flexible sheet;

[0016] A plurality of pivots are respectively embedded in each of the bracket units;

[0017] A torsion chain assembly comprises a first torsion assembly and a second torsion assembly extending in parallel with each other; the first torsion assembly comprises a plurality of first torsion plates, each of which is provided with a first axial hole and a first long axis hole; the second torsion assembly comprises a plurality of second torsion plates, each of which is provided with a second axial hole and a second long axis hole, the second axial holes correspond to the first long axis holes, the second long axis holes correspond to the first axial holes, and are respectively penetrated and pivotally connected in series by the pivots, so that the second torsion plates are arranged in an overlapping state with the first torsion plates through the pivots; the flexible plate can move between a straight state and a bent state in response to external force operation, and each of the pivots can adapt to the change in the spacing between the first torsion assembly and the second torsion assembly caused by the straightening and bending activities of the flexible plate by using the displacement space provided by the first long axis hole and the second long axis hole.

[0018] The hinge device described above, wherein: the first long axis hole and the second long axis hole are respectively provided with a first arc-shaped convex portion and a second arc-shaped convex portion protruding inwardly on at least one side of the middle section of the pivot displacement path, the first arc-shaped convex portion can define the interior of the first long axis hole as a first front space close to the first axis hole and a first rear space away from the first axis hole; the second arc-shaped convex portion can define the interior of the second long axis hole as a second front space close to the second axis hole and a second rear space away from the second axis hole.

[0019] The hinge device described, wherein: the first arc-shaped protrusion is provided with a first front stop portion facing the first front space, and a first rear stop portion facing the first rear space, and the second arc-shaped protrusion is provided with a second front stop portion facing the second front space, and a second rear stop portion facing the second rear space; when the flexible sheet forms a bent state, each pivot is located in the first front space and the second front space corresponding to the first long axis hole and the second long axis hole, and is respectively abutted by the first front stop portion and the second front stop portion, thereby forming a positioning effect towards pushing the flexible sheet to maintain the bent state; when the flexible sheet is stretched to be straight, each pivot is located in the first rear space and the second rear space of the first long axis hole and the second long axis hole, and is respectively abutted by the first rear stop portion and the second rear stop portion, thereby forming a positioning effect towards pushing the flexible sheet to maintain the straight state.

[0020] The hinge device, wherein: the first long axis hole and the second long axis hole are respectively recessed with a first front recess and a second front recess at one end close to the first axis hole and the second axis hole, and are respectively recessed with a first rear recess and a second rear recess at one end away from the first axis hole and the second axis hole.

[0021] The hinge device described, wherein: the edge of the first axial hole is provided with a first external notch open to the outside and a first straight edge, the edge of the second axial hole is provided with a second external notch open to the outside and a second straight edge, and each pivot is provided with a flat surface; when the flexible sheet is in a fully extended straight state, each flat surface rotates to a position where it has an angle of local interference with the first straight edge and the second straight edge, so that each first torsion component and the second torsion component respectively generate a force that pushes each pivot toward keeping the flexible sheet straight.

[0022] The hinge device, wherein: the ends of the first shaft hole and the second shaft hole away from the first outer notch and the second outer notch are connected to a first hollow hole and a second hollow hole via a first inner notch and a second inner notch respectively.

[0023] The hinge device described, wherein: the first torque assembly and the second torque assembly are respectively combined with a first stop assembly and a second stop assembly, and the first stop assembly and the second stop assembly respectively have a plurality of first stop plates and a second stop plate; each of the first stop plates is respectively overlapped with each of the first torque plates, and each of the first stop plates is respectively provided with a first limiting hole corresponding to the first axial hole and a first limiting long hole corresponding to the first long axis hole; each of the second stop plates is respectively overlapped with each of the second torque plates, and each of the second stop plates is respectively provided with a second limiting hole corresponding to the second axial hole and a second limiting long hole corresponding to the second long axis hole.

[0024] The hinge device, wherein: each bracket unit is provided with at least one branch, each branch is penetrated with an embedding hole, each pivot is penetrated and embedded in each embedding hole and synchronously linked with each bracket unit.

[0025] The hinge device described above, wherein: each pivot is provided with a coupling hole on an end face away from each branch, and a through hole is provided on a plurality of pressure covers, and a plurality of coupling members respectively penetrate through each of the through holes and are detachably fixed in each of the coupling holes, so that each of the pressure covers can cover the end portion of each of the pivots.

[0026] The hinge device described herein, wherein: the flexible sheet is combined with a frame strip at its periphery, and a groove is arranged around the inner periphery of the frame strip; each of the bracket units is provided with an axially extending protrusion at at least one end portion, and the protrusion can be inserted into the groove, so that each bracket unit can be combined with the surface of the flexible sheet via the frame strip.

[0027] The hinge device, wherein: the bracket assembly has at least one base connected in parallel with each of the bracket units.

[0028] The hinge device, wherein: the bracket assembly has at least one base connected in parallel with each of the bracket units.

[0029] A display device formed by using the hinge device, wherein: a flexible screen is attached to a surface side of the flexible sheet away from the bracket assembly.

[0030] The utility model provides a hinge device, wherein a flexible sheet can move between a straight state and a bent state in response to an external force operation, and each pivot can adapt to the change of the spacing between the first and second torsion components that connects each pivot when the flexible sheet moves between the straight state and the bent state through the displacement space provided by the first and second long axis holes.

[0031] In order to make the above-mentioned purpose, effect and feature of the utility model more concretely understood, the following description is made with reference to the following drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is the overall combined appearance diagram of the utility model.

[0033] Figure 2 yes Figure 1 A three-dimensional exploded view of the separation of the bracket assembly, torsion chain assembly, flexible sheet and flexible screen.

[0034] Figure 3 yes Figure 2 Schematic diagram of the combination of the middle bracket assembly and the pivot.

[0035] Figure 4 yes Figure 3 Exploded perspective view of the medium torsion chain assembly.

[0036] Figure 5 It is a side view schematic diagram of the arrangement of the first and second torsion plates and the relative positions of the pivots of the utility model.

[0037] Figure 6 This is a schematic diagram (1) of the utility model in use; it discloses that the first and second torsion components are in a completely bent and curled state.

[0038] Figure 7 yes Figure 6 An enlarged schematic diagram of part A.

[0039] Figure 8 This is a schematic diagram (II) of the utility model in use; it discloses that the first and second torque components are in a fully unfolded and stretched state.

[0040] Fig. 9 yes Figure 8 An enlarged schematic diagram of part B.

[0041] Explanation of reference numerals: 1-flexible sheet; 10-flexible screen; 11-frame bar; 12-groove; 2-bracket assembly; 20-bracket unit; 200-base; 21-branch; 22-embedded hole; 23-convex portion; 3-first torsion assembly; 30-first torsion sheet; 31-first axial hole; 311-first outer notch; 312-first straight edge; 313-first inner notch; 314-first hollow hole; 32-first long axis hole; 321-first arc-shaped convex portion; 3211-first front stop portion; 3212-first rear stop portion; 322-first front space; 3221-first front arc edge; 3222-first front recess; 323-first rear space; 3231-first rear arc edge; 3232-first rear recess; 4-second torsion assembly; 40-second torsion sheet; 41-first Second axis hole; 411-second outer notch; 412-second straight edge; 413-second inner notch; 414-second hollow hole; 42-second long axis hole; 421-second arc-shaped convex portion; 4211-second front stop portion; 4212-second rear stop portion; 422-second front space; 4221-second front arc edge; 4222-second front recess; 423-second rear space; 4231-second rear arc edge; 4232-second rear recess; 5-first stop assembly; 50-first stop plate; 51-first limiting hole; 52-first limiting long hole; 6-second stop assembly; 60-second stop plate; 61-second limiting hole; 62-second limiting long hole; 7-pivot; 71-combining hole; 72-flat bevel surface; 8-pressure cover; 81-through hole; 82-combining piece; C-torsion chain group. DETAILED DESCRIPTION

[0042] Please refer to Figures 1 to 5 As shown, it can be seen that the main structure of the utility model includes: a flexible sheet 1, a bracket assembly 2, a pivot 7 and a torsion chain group C; wherein the flexible sheet 1 is an elastically bendable sheet-like body, a frame strip 11 is combined at the periphery of the flexible sheet 1, and a groove 12 is arranged around the inner periphery of the frame strip 11; in a feasible embodiment, the flexible sheet 1 is combined with a flexible screen 10 on a surface side away from the groove 12, and the flexible screen 10 can bend or stretch synchronously with the flexible sheet 1.

[0043] The bracket assembly 2 has a plurality of elongated bracket units 20 that are arranged in parallel and at equal intervals. Each of the bracket units 20 has an axially extending protrusion 23 and a transversely bent branch 21 at both ends. The protrusion 23 can be inserted into the groove 12, so that each bracket unit 20 can be combined with a surface side of the flexible sheet 1 away from the flexible screen 10 through the frame bar 11, and each of the branches 21 is penetrated by an embedding hole 22.

[0044] In a feasible embodiment, the support assembly 2 has at least one base 200 arranged in parallel with each of the support units 20 , and the base 200 can be used to set circuit components required for operating the flexible screen 10 to perform related operations.

[0045] A plurality of pivots 7 are respectively inserted into the embedding holes 22 so that a center line L formed by connecting the centers of the pivots 7 can extend parallel to the flexible sheet 1. A flat surface 72 is provided along the axial direction on the periphery of each pivot 7, and a coupling hole 71 is provided on an end face of each pivot 7 away from the branch 21.

[0046] The torsion chain assembly C is composed of a first torsion component 3 and a second torsion component 4 connected in series; the first torsion component 3 has a plurality of first torsion plates 30, each of which is provided with a first axial hole 31 and a first long axis hole 32, which are respectively fitted on each of the adjacent pivots 7; the first long axis hole 32 is provided with a first arc-shaped protrusion 321 protruding inwardly on at least one side of the middle section, and the first arc-shaped protrusion 321 can form a first front space 322 close to the first axial hole 31 and a first rear space 323 away from the first axial hole 31 inside the first long axis hole 32.

[0047] In the above structure, the first long axis hole 32 is provided with a first front arc edge 3221 at an end close to the first axis hole 31, and is provided with a first rear arc edge 3231 at an end away from the first axis hole 31; the first front arc edge 3221 is respectively provided with a first front recess 3222, and the first rear arc edge 3231 is respectively provided with a first rear recess 3232. In addition to providing the elasticity of the first long axis hole 32 for expansion and deformation, the first front recess 3222 and the first rear recess 3232 can also be used to accommodate grease required for lubrication; and the first arc-shaped protrusion 321 is respectively provided with a first front stop portion 3211 facing the first front space 322 and a first rear stop portion 3212 facing the first rear space 323.

[0048] In a feasible embodiment, the edge of the first axial hole 31 is provided with a first outer notch 311 open to the outside and a first straight edge 312. The end of the first axial hole 31 away from the first outer notch 311 is connected to a first hollow hole 314 via a first inner notch 313. In addition to providing the first axial hole 31 with elasticity for expansion and deformation, the first inner notch 313 and the first hollow hole 314 can also be used to accommodate grease required for lubrication.

[0049] The second torque assembly 4 has a plurality of second torque plates 40, each of which is provided with a second axial hole 41 and a second long axis hole 42, each of which corresponds to the first long axis hole 32, each of which corresponds to the first axial hole 31, and is respectively fitted on each of the adjacent pivots 7, so that each of the second torque plates 40 can form an overlapping connection state with each of the first torque plates 30 through each of the pivots 7; the second long axis hole 42 is provided with a protruding second arc-shaped convex portion 421 at the middle section, and the second arc-shaped convex portion 421 can form a second front space 422 close to the second axial hole 41 and a second rear space 423 away from the second axial hole 41 inside the second long axis hole 42.

[0050] In the above structure, the second long axis hole 42 is provided with a second front arc edge 4221 at the end close to the second axis hole 41, and is provided with a second rear arc edge 4231 at the end away from the second axis hole 41; the second front arc edge 4221 is respectively provided with a second front recess 4222, and the second rear arc edge 4231 is respectively provided with a second rear recess 4232. In addition to providing the elasticity of the second long axis hole 42 for expansion and deformation, the second front recess 4222 and the second rear recess 4232 can also be used to accommodate grease required for lubrication; and the second arc-shaped protrusion 421 is respectively provided with a second front stop portion 4211 facing the second front space 422 and a second rear stop portion 4212 facing the second rear space 423.

[0051] In a feasible embodiment, the edge of the second axial hole 41 is provided with a second outer notch 411 open to the outside and a second straight edge 412. The end of the second axial hole 41 away from the second outer notch 411 is connected to a second hollow hole 414 via a second inner notch 413. In addition to providing the elasticity of the second axial hole 41 for expansion and deformation, the second inner notch 413 and the second hollow hole 414 can also be used to accommodate grease required for lubrication.

[0052] In practical application, when the pivot shaft 7 is located in the first and second front spaces 322 and 422, respectively, a gap may be left between the first and second front arc edges 3221 and 4221 and the local surface of the pivot shaft 7. By utilizing the gap to cooperate with the expansion of the first and second front concave portions 3222 and 4222, the first and second front spaces 322 and 422 can be temporarily elastically expanded to ensure that the pivot shaft 7 can completely pass through the first and second arc-shaped protrusions 321 and 421 and enter the first and second front spaces 322 and 422. ; Similarly, when each pivot 7 is positioned in the first and second rear spaces 323, 423, respectively, a gap may be left between the first and second rear arc edges 3231, 4231 and the local surface of the pivot 7. By utilizing the gap and cooperating with the expansion of the first and second rear recesses 3232, 4232, the first and second rear spaces 323, 423 can be temporarily elastically expanded to ensure that the pivot 7 can completely pass through the first and second arc-shaped protrusions 321, 421 and enter the first and second rear spaces 323, 423.

[0053] In a feasible embodiment, the first and second torque components 3 and 4 can be combined with the first and second stop components 5 and 6 respectively as needed; wherein the first and second stop components 5 and 6 respectively have a plurality of first and second stop plates 50 and 60; each of the first stop plates 50 is respectively overlapped on each of the first torque plates 30, and each of the first stop plates 50 is respectively provided with a first limiting hole 51 corresponding to the first shaft hole 31 and a first limiting long hole 52 corresponding to the first long shaft hole 32, which are respectively fitted on each of the adjacent pivots 7; each of the second stop plates 60 is respectively overlapped on each of the second torque plates 40, and each of the second stop plates 60 is respectively provided with a second limiting hole 61 corresponding to the second shaft hole 41 and a second limiting long hole 62 corresponding to the second long shaft hole 42, which are respectively fitted on each of the adjacent pivots 7, so as to prevent each of the pivots 7 from loosening from the first and second torque plates 30 and 40.

[0054] In this embodiment, each pivot 7 is provided with a coupling hole 71 on an end face away from each branch 21, and a pressure cover 8 is provided next to the coupling hole 71. Each pressure cover 8 is provided with a through hole 81. A coupling member 82 penetrates each through hole 81 and extends into each coupling hole 71, so that each pressure cover 8 can be coupled and fixed to the end of each pivot 7.

[0055] Please refer to Figures 6 to 9 As shown, it can be seen that in actual application, when the user applies force to bend the flexible screen 10 (flexible sheet 1) to a fully bent and rolled state (such as Figure 6As shown), the flexible sheet 1 can synchronously link each of the bracket units 20 via the frame bar 11 to drive each of the pivots 7 to move; wherein, part of the pivot 7 is located at the first front space 322 in the first long axis hole 32, and is positioned by the first front stop 3211 cooperating with the first front arc edge 3221 to abut against each other, and at the same time, the flat surface 72 of the part of the pivot 7 rotates to a position that interferes with the second straight edge 412 of the second axis hole 41 at a large angle; and the adjacent pivot 7 is located at the second front space 422 in the second long axis hole 42, and can be positioned by the second front stop 4211 cooperating with the second front arc edge 4221 to abut against each other, and at the same time, the flat surface 72 of the adjacent pivot 7 rotates to a position that interferes with the first straight edge 312 of the first axis hole 31 at a large angle (as shown Figure 7 As shown in the figure, since the guiding force generated by the local large-angle interference between the first and second straight edges 312, 412 and the flat bevel surface 72 is relatively small, the first and second torsion plates 30, 40 can be self-locked (locked in place) in a bent and retracted state by virtue of the mechanism by which each pivot 7 is positioned in the first and second front spaces 322, 422, and each pivot 7 can (via each bracket unit 20) link the flexible screen 10 (flexible sheet 1) to maintain a bent and positioned state, so that the flexible screen 10 (flexible sheet 1) can be fitted on the wrist or other parts of the human body for easy carrying.

[0056] When the user applies force to fully stretch the flexible screen 10 (flexible sheet 1) to a flat state (such as Figure 8 As shown in the figure), the flexible sheet 1 can synchronously link each of the bracket units 20 via the frame bar 11 to drive each of the pivots 7 to move; wherein, part of the pivot 7 is located in the first rear space 323 in the first long axis hole 32, and is positioned by the first rear stop portion 3212 cooperating with the first rear arc edge 3231 to abut against each other, and at the same time, the flat surface 72 of the part of the pivot 7 rotates to a position that interferes with the second straight edge 412 of the second axis hole 41 at a small angle; and the adjacent pivot 7 is located in the second rear space 423 in the second long axis hole 42, and can be positioned by the second rear stop portion 4212 cooperating with the second rear arc edge 4231 to abut against each other, and at the same time, the flat surface 72 of the adjacent pivot 7 rotates to a position that interferes with the first straight edge 312 of the first axis hole 31 at a small angle (as shown in the figure). Fig. 9As shown); by virtue of the mechanism that each of the pivots 7 is positioned in the first and second rear spaces 323, 423, the first and second torsion plates 30, 40 can be self-locked (locked in place) in a straight and extended state; and the first and second straight edges 312, 412 have the function of guiding the flat surface 72 to rotate to be completely flat, which can drive each of the pivots 7 (via each of the bracket units 20) to drive the flexible screen 10 (flexible sheet 1) to generate a force to keep it straight, so that the flexible screen 10 (flexible sheet 1) has sufficient structural strength to withstand the finger touch pressure operation force.

[0057] The above structure of the utility model has the following characteristics when applied in practice:

[0058] 1. When the flexible screen 10 (flexible sheet 1) is stretched straight, each of the pivots 7 is positioned in the first and second rear spaces 323 and 423, and the first and second straight edges 312 and 412 guide the flat surface 72 to rotate to be completely flat. Therefore, each of the pivots 7 can link the flexible screen 10 (flexible sheet 1) to generate a force to keep it straight, so as to maintain the structural strength required to withstand the finger touch operation force.

[0059] 2. The first and second long axis holes 32 and 42 are respectively provided with first and second arc-shaped protrusions 321 and 421 protruding in the middle section. The first and second arc-shaped protrusions 321 and 421 can respectively stop and position each pivot 7 in the first and second front spaces 322 and 422 or the first and second rear spaces 323 and 423, so that the flexible screen 10 (flexible sheet 1) can form a self-locking (locked and fixed) state in different positions such as bending, rolling up or straight stretching.

[0060] 3. The pivots 7 are arranged at intervals on the flexible sheet 1. Therefore, when the pivots 7 cooperate with the first and second torsion components 3 and 4 to move, no bending or sharp protrusions will be generated. Combined with the bending elasticity of the flexible sheet 1 itself, the flexible sheet 1 can maintain a smooth arc surface between the pivots 7, so as to effectively avoid wear and damage to the flexible screen 10.

[0061] 4. During the unfolding or bending process of the flexible screen 10 (flexible sheet 1), the pivots 7 are driven to pivot synchronously directly through the bracket units 20, so that the first and second torsion plates 30 and 40 can move synchronously; and since there is no direct contact mechanism between the fixed parts (bracket units 20) of the pivots 7, when the flexible screen 10 (flexible sheet 1) is unfolded or bent, there will be no jamming of the activity, thereby ensuring the smoothness of the overall unfolding or bending operation.

[0062] In summary, the hinge device of the present invention and the display device composed of it can achieve synchronous bending activities and be stably fixed in a fully extended and bent state. At the same time, a pre-tightening force can be generated when fully extended to effectively prevent gravity sagging. The above description is only a description of the preferred embodiment of the present invention. For example, any changes, modifications, modifications or equivalent substitutions based on the technical means and scope of the present invention should also fall within the protection scope of the present utility model patent.

Claims

1. A hinge device, characterized in that: include: An elastically bendable flexible sheet (1); A support assembly (2) having a plurality of elongated support units (20) arranged in parallel at equal intervals, each support unit (20) being coupled to a surface side of the flexible sheet (1); A plurality of pivots (7) are respectively embedded in each of the bracket units (20); A torsion chain assembly (C) comprises a first torsion assembly (3) and a second torsion assembly (4) extending in parallel with each other; the first torsion assembly (3) comprises a plurality of first torsion plates (30), each of which is provided with a first shaft hole (31) and a first long shaft hole (32); the second torsion assembly (4) comprises a plurality of second torsion plates (40), each of which is provided with a second shaft hole (41) and a second long shaft hole (42), the second shaft hole (41) corresponds to the first long shaft hole (32), and the second long shaft hole (42) corresponds to the first long shaft hole (32). The first axial hole (31) is respectively penetrated by each of the pivots (7) and pivotally connected in series, so that the second torsion plate (40) is arranged in an overlapping state with the first torsion plate (30) via each of the pivots (7); the flexible plate (1) can move between a straight state and a bent state in response to external force operation, and each of the pivots (7) can adapt to the change in the spacing between the first torsion component (3) and the second torsion component (4) caused by the straightening and bending activities of the flexible plate (1) through the displacement space provided by the first long axis hole (32) and the second long axis hole (42).

2. The hinge device according to claim 1, characterized in that: The first long axis hole (32) and the second long axis hole (42) are respectively provided with a first arc-shaped convex portion (321) and a second arc-shaped convex portion (421) protruding inwardly on at least one side of the middle section of the displacement path of the pivot shaft (7); the first arc-shaped convex portion (321) can define the interior of the first long axis hole (32) as a first front space (322) close to the first axis hole (31) and a first rear space (323) away from the first axis hole (31); the second arc-shaped convex portion (421) can define the interior of the second long axis hole (42) as a second front space (422) close to the second axis hole (41) and a second rear space (423) away from the second axis hole (41).

3. The hinge device according to claim 2, characterized in that: The first arc-shaped protrusion (321) is provided with a first front stopper (3211) facing the first front space (322), and a first rear stopper (3212) facing the first rear space (323), and the second arc-shaped protrusion (421) is provided with a second front stopper (4211) facing the second front space (422), and a second rear stopper (4212) facing the second rear space (423); when the flexible sheet (1) forms a bent state, each of the pivots (7) is located in the first front space (322), the second long axis hole (42), and the second long axis hole (42). The pivots (7) are located in the first rear space (323) and the second rear space (423) of the first long axis hole (32) and the second long axis hole (42), and are respectively abutted by the first rear stop portion (3212) and the second rear stop portion (4212), thereby forming a positioning effect towards pushing the flexible sheet (1) to maintain a bent state; when the flexible sheet (1) is stretched to be straight, each pivot (7) is located in the first rear space (323) and the second rear space (423) of the first long axis hole (32) and the second long axis hole (42), and is respectively abutted by the first rear stop portion (3212) and the second rear stop portion (4212), thereby forming a positioning effect towards pushing the flexible sheet (1) to maintain a straight state.

4. The hinge device according to claim 3, characterized in that: The first long axis hole (32) and the second long axis hole (42) are respectively provided with a first front recess (3222) and a second front recess (4222) at one end close to the first axis hole (31) and the second axis hole (41), and are respectively provided with a first rear recess (3232) and a second rear recess (4232) at one end away from the first axis hole (31) and the second axis hole (41).

5. The hinge device according to claim 2, characterized in that: The edge of the first shaft hole (31) is provided with a first outer notch (311) open to the outside and a first straight edge (312), the edge of the second shaft hole (41) is provided with a second outer notch (411) open to the outside and a second straight edge (412), and each pivot (7) is provided with a flat surface (72); when the flexible sheet (1) is in a fully extended and straight state, each flat surface (72) rotates to a position having an angle of local interference with the first straight edge (312) and the second straight edge (412), so that each first torque component (3) and the second torque component (4) respectively generate a force to push each pivot (7) toward keeping the flexible sheet (1) straight.

6. The hinge device according to claim 5, characterized in that: One end of the first shaft hole (31) and the second shaft hole (41) away from the first outer notch (311) and the second outer notch (411) is connected to a first hollow hole (314) and a second hollow hole (414) via a first inner notch (313) and a second inner notch (413) respectively.

7. The hinge device according to claim 1 or 2 or 3 or 4 or 5 or 6, characterized in that: The first torque assembly (3) and the second torque assembly (4) are respectively combined with a first stop assembly (5) and a second stop assembly (6), and the first stop assembly (5) and the second stop assembly (6) respectively have a plurality of first stop plates (50) and a plurality of second stop plates (60); each of the first stop plates (50) is respectively overlapped with each of the first torque plates (30), and each of the first stop plates (50) is respectively provided with a first limiting hole (51) corresponding to the first shaft hole (31) and a first limiting long hole (52) corresponding to the first long shaft hole (32); each of the second stop plates (60) is respectively overlapped with each of the second torque plates (40), and each of the second stop plates (60) is respectively provided with a second limiting hole (61) corresponding to the second shaft hole (41) and a second limiting long hole (62) corresponding to the second long shaft hole (42).

8. The hinge device according to claim 1 or 2 or 3 or 4 or 5 or 6, characterized in that: Each of the bracket units (20) is provided with at least one branch (21), each of the branch parts (21) is penetrated by an embedding hole (22), and each of the pivots (7) is penetrated by and embedded in each of the embedding holes (22) to be synchronously linked with each of the bracket units (20).

9. The hinge device according to claim 7, characterized in that: Each of the bracket units (20) is provided with at least one branch (21), each of the branch parts (21) is penetrated by an embedding hole (22), and each of the pivots (7) is penetrated by and embedded in each of the embedding holes (22) to be synchronously linked with each of the bracket units (20).

10. The hinge device according to claim 8, characterized in that: Each of the pivots (7) is provided with a coupling hole (71) on an end face away from each of the branches (21), and each of the plurality of pressure covers (8) is provided with a through hole (81). By means of a plurality of coupling members (82) respectively passing through each of the through holes (81) and being detachably fixed to each of the coupling holes (71), each of the pressure covers (8) can cover the end portion of each of the pivots (7).

11. The hinge device according to claim 9, characterized in that: Each of the pivots (7) is provided with a coupling hole (71) on an end face away from each of the branches (21), and each of the plurality of pressure covers (8) is provided with a through hole (81). By means of a plurality of coupling members (82) respectively passing through each of the through holes (81) and being detachably fixed to each of the coupling holes (71), each of the pressure covers (8) can cover the end portion of each of the pivots (7).

12. The hinge device according to claim 1 or 2 or 3 or 4 or 5 or 6, characterized in that: The flexible sheet (1) is connected to a frame strip (11) at its periphery, and a groove (12) is arranged around the inner periphery of the frame strip (11); each bracket unit (20) is provided with an axially extending protrusion (23) at least at one end, and the protrusion (23) can be inserted into the groove (12), so that each bracket unit (20) can be connected to the surface of the flexible sheet (1) via the frame strip (11).

13. The hinge device according to claim 1 or 2 or 3 or 4 or 5 or 6, characterized in that: The support assembly (2) has at least one base (200) connected in parallel with each of the support units (20).

14. The hinge device according to claim 7, characterized in that: The support assembly (2) has at least one base (200) connected in parallel with each of the support units (20).

15. The hinge device according to claim 8, characterized in that: The support assembly (2) has at least one base (200) connected in parallel with each of the support units (20).

16. The hinge device according to claim 10, characterized in that: The support assembly (2) has at least one base (200) connected in parallel with each of the support units (20).

17. A display device comprising the hinge device according to any one of claims 1 to 6, characterized in that: A flexible screen (10) is attached to a surface of the flexible sheet (1) away from the support assembly (2).

18. A display device using the hinge device of claim 7, characterized in that: A flexible screen (10) is attached to a surface of the flexible sheet (1) away from the support assembly (2).

19. A display device using the hinge device of claim 8, characterized in that: A flexible screen (10) is attached to a surface of the flexible sheet (1) away from the support assembly (2).

20. A display device using the hinge device according to claim 10, characterized in that: A flexible screen (10) is attached to a surface of the flexible sheet (1) away from the support assembly (2).

21. A display device using the hinge device of claim 13, characterized in that: A flexible screen (10) is attached to a surface of the flexible sheet (1) away from the support assembly (2).

Images