Pivot torsion mechanism

Abstract

The utility model provides a pivot torsion mechanism, which is characterized in that a plurality of pivots which are arranged at equal intervals are arranged outside one surface side of a flexible sheet which can be elastically bent, and a center line of each pivot is parallel to the flexible sheet; the plurality of first torsion sheets are respectively provided with a first shaft hole and a first long shaft hole, 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 each pivot penetrates through the first long shaft hole and the second shaft hole or the first shaft hole and the second long shaft hole. The second torsion sheets are connected with the first torsion sheets in an overlapping manner through the pivots, and the first long shaft hole and the second long shaft hole are respectively provided with a stopping part; when the flexible piece responds to external force operation to change the moving state, the pivots can be synchronously linked to move in the first long shaft hole and the second long shaft hole so as to adapt to connection length changes generated between the first torsion piece and the second torsion piece along with the movement of the flexible piece, the pivots are matched to form interference effects with the stopping parts in the first long shaft hole and the second long shaft hole respectively, and a self-locking or positioning mechanism is established.

Description

Technical Field

[0001] The utility model relates to a pivot torque mechanism, in particular to a torque mechanism with pre-tightening and self-locking functions, which can effectively prevent gravity sagging to ensure that the extension and bending states are maintained stable and reliable. 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 utility model 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 There are a plurality of partially overlapping and staggered strips, each of which is provided with an elongated damping groove and an axial hole, which are respectively fitted on adjacent shaft 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 shaft component to generate a resistance (torque) force during pivoting. When the synchronous component is in a fully extended state, each shaft component is located in the first position groove, and when the synchronous component is in a fully bent state, each shaft component is located in the second position groove, so as to adapt to 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 pivot torsion mechanism, in which a plurality of equally spaced pivots are arranged on the outside of a surface side of an elastically bendable flexible sheet, and the connecting center line of each pivot is parallel to the flexible sheet; a plurality of first torsion sheets are respectively provided with a first axial hole and a first long axis hole, and a plurality of second torsion sheets are respectively provided with a second axial hole corresponding to the first long axis hole and a second long axis hole corresponding to the first axial hole, each pivot passes through the first long axis hole, the second axial hole or the first axial hole and the second long axis hole, so that each second torsion sheet forms an overlapping arrangement with each first torsion sheet through the pivot, and the first and second long axis holes are respectively provided with a stopper When the flexible piece changes its active state in response to external force operation, it 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 with each stop part 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. 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 affected by the torsion pieces and generate a force to push the flexible piece to remain straight, so that the flexible piece has the structural strength required to withstand the operating force.

[0010] Another object of the present utility model is to provide a pivot torque mechanism, 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 first and second front spaces close to the first and second axis holes, and first and second rear spaces away from the first and second axis holes, respectively, inside the first and second long axis holes, and first and second front stop parts and first and second rear stop parts are respectively provided on the first and second arc-shaped convex parts, corresponding to the first and second front spaces and the first and second rear spaces, respectively; by utilizing the pivot to move in the first and second front spaces or the first and second rear spaces, 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 pivot torsion mechanism, 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 utility model is to provide a pivot torsion mechanism, wherein the flexible sheet directly drives the pivots to rotate synchronously during the unfolding or bending process, so the first and second torsion sheets can also produce synchronous activities; and there is no mechanism for direct contact and abutment between the fixed parts of the pivots, so when the flexible sheet is unfolded or bent, it is not easy to produce activity jamming, which can ensure the smoothness of the overall unfolding or bending operation; because the pivots are arranged on the flexible sheet at intervals, when the flexible sheet is bent, the elastic bending of the flexible sheet itself can be used to maintain a smooth arc surface between the pivots, and no bends or sharp convex parts will be produced on the flexible sheet, so as to effectively avoid wear and damage to the flexible screen on the flexible sheet.

[0013] In order to achieve the above-mentioned purpose and effect, the technical means adopted by the utility model are as follows: the utility model provides a pivot torque mechanism, comprising: a flexible piece that can be elastically bent; a plurality of pivots, which are arranged at equal intervals and synchronously linked on the outside of a surface side of the flexible piece, and the centers of each pivot are connected to form a connecting center line, and the connecting center line is parallel to the flexible piece; a torsion chain group is composed of a first torsion component and a second torsion component connected in series; the first torsion component has at least one first torsion piece located at a first row connection position, and each of the first torsion pieces is respectively provided with a first axial hole and a first long axis hole; the second torsion component has at least one second torsion piece located at a second row connection position, and the second torsion piece is ... The first row of connection positions and the second row of connection positions are parallel to each other. Each of the second torque plates is provided with a second axial hole and a second long axis hole. The second axial hole corresponds to the first long axis hole, and the second long axis hole corresponds to the first axial hole. The second torque plates are respectively penetrated and pivotally connected in series by the pivots, so that the second torque plates are overlapped and arranged in series with the first torque 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 and second torque components caused by the straightening and bending activities of the flexible plate through the displacement space provided by the first and second long axis holes.

[0014] According to the above structure, 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 and second straight edges, so that each first torque component and the second torque component respectively generate a force that pushes each pivot toward keeping the flexible sheet straight.

[0015] According to the above structure, the first and second long axis holes are respectively provided with first and second arc-shaped protrusions protruding inward on at least one side of the middle section of the pivot displacement path, and the first arc-shaped protrusion 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 protrusion 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.

[0016] According to the above structure, 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 of the pivots is located in the first and second front spaces of the first and second long axis holes, and is respectively abutted by the first and second front stop portions, 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 of the pivots is located in the first and second rear spaces of the first and second long axis holes, and is respectively abutted by the first and second rear stop portions, thereby forming a positioning effect towards pushing the flexible sheet to maintain the straight state.

[0017] According to the above structure, one end of the first and second axial holes away from the first and second outer notches is connected to a first and second hollow hole via a first and second inner notch respectively.

[0018] According to the above structure, the first and second long axis holes are respectively provided with first and second front recesses at one end close to the first and second axis holes, and are respectively provided with first and second rear recesses at one end away from the first and second axis holes.

[0019] According to the above structure, the first and second torque components are respectively combined with a first and second stop components, and the first and second stop components respectively have a plurality of first and second stop plates; each of the first stop plates is respectively overlapped on 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 on 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.

[0020] According to the above structure, a support assembly is disposed on a surface side of the flexible sheet. The support assembly has a plurality of parallel and parallel long support units, and each of the pivots is respectively combined with each of the support units.

[0021] According to the above structure, each of the bracket units is provided with at least one branch, and each of the branches is penetrated by an embedding hole capable of embedding each of the pivots.

[0022] According to the above structure, each of the pivots is covered with a pressure cover at the end away from each of the branches and penetrating through the torsion chain assembly after being pivotally connected.

[0023] According to the above structure, each pivot is provided with a coupling hole on an end face away from each branch, and each pressure cover is provided with a through hole. A plurality of coupling parts respectively penetrate through each through hole and are detachably fixed in each coupling hole, so that each pressure cover can cover the end portion of each pivot.

[0024] The pivot torque mechanism of the utility model can achieve the pre-tightening and self-locking functions, and can effectively prevent gravity sagging to ensure that the extension and bending states are maintained stable and reliable.

[0025] 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

[0026] Figure 1 It is a three-dimensional exploded structural diagram of the utility model.

[0027] Figure 2 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.

[0028] Figure 3 It is a partial combination schematic diagram of the utility model and related components in actual application.

[0029] Figure 4 yes Figure 3 The overall combined appearance diagram.

[0030] Figure 5 This is a schematic diagram (1) of the utility model in use; it discloses that the first and second torque components are in a fully unfolded and stretched state.

[0031] Figure 6 yes Figure 5 An enlarged schematic diagram of part A.

[0032] Figure 7 This is a schematic diagram (II) of the utility model in use; it discloses that the first and second torsion components are in a completely bent and curled state.

[0033] Figure 8 yes Figure 7 An enlarged schematic diagram of part B.

[0034] Explanation of the reference numerals: 1-flexible sheet; 2-pivot; 21-combination hole; 22-flat surface; 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; 340-torsion chain group; 4-second torsion assembly; 40-second torsion sheet; 41-second axial 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 protrusion; 4211-second front stop; 4212-second rear stop; 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-bracket assembly; 70-bracket unit; 71-branch; 72-embedded hole; 8-pressure cover; 81-through hole; 82-connecting piece; L-connecting center line. DETAILED DESCRIPTION

[0035] Please refer to Figures 1 to 4 As shown, the main structure of the utility model includes: a flexible sheet 1, a pivot 2 and a torsion chain set 340; wherein the flexible sheet 1 is an elastically bendable sheet; a plurality of pivots 2 are arranged at equal intervals on the outside of a surface side of the flexible sheet 1 and can maintain synchronous linkage, and the center line L formed by connecting the centers of each pivot 2 is parallel to the flexible sheet 1, and each pivot 2 is provided with a flat surface 22.

[0036] In a feasible embodiment, a bracket assembly 7 can be provided on one side of the flexible sheet 1 as needed. The bracket assembly 7 has a plurality of parallel and juxtaposed elongated bracket units 70 at equal intervals. Each of the bracket units 70 is provided with at least one branch 71, and each of the branches 71 is penetrated by an embedding hole 72. Each of the pivots 2 is penetrated and embedded in each of the embedding holes 72, so that the center line L formed by connecting the centers of each pivot 2 can extend parallel to the flexible sheet 1.

[0037] The torsion chain assembly 340 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 2; a first outer notch 311 open to the outside and a first straight edge 312 are provided at the edge of the first axial hole 31, and a protruding first arc-shaped convex portion 321 is provided at the middle section of the first long axis hole 32, and the first arc-shaped convex portion 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.

[0038] In a feasible embodiment, the end of the first shaft hole 31 away from the first outer notch 311 is connected to a first hollow hole 314 via a first inner notch 313. The first inner notch 313 and the first hollow hole 314 can not only provide elasticity for the expansion and deformation of the first shaft hole 31, but also can accommodate grease required for lubrication; the first long shaft hole 32 is provided with a first front arc edge 3221 at one end close to the first shaft hole 31, and a first rear arc edge 3231 at one end away from the first shaft hole 31; A first front recess 3222 is recessed on a front arc edge 3221, and a first rear recess 3232 is recessed on a first rear arc edge 3231. The first front recess 3222 and the first rear recess 3232 can provide elasticity for the expansion and deformation of the first long axis hole 32 and can also accommodate grease required for lubrication. A first front stopper 3211 facing the first front space 322 and a first rear stopper 3212 facing the first rear space 323 are respectively provided on the first arc-shaped convex portion 321.

[0039] 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 the adjacent pivots 2, so that each of the second torque plates 40 can be connected to each of the first torque plates 30 through each of the pivots 2 in an overlapping arrangement; a second outer notch 411 and a second straight edge 412 open to the outside are provided at the edge of the second axial hole 41, and a protruding second arc-shaped convex portion 421 is provided at the middle section of the second long axis hole 42, 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.

[0040] In a feasible embodiment, the end of the second shaft hole 41 away from the second outer notch 411 is connected to a second hollow hole 414 via a second inner notch 413. The second inner notch 413 and the second hollow hole 414 can not only provide the elasticity of the second shaft hole 41 to expand and deform, but also can accommodate grease required for lubrication; the second long shaft hole 42 is provided with a second front arc edge 4221 at one end close to the second shaft hole 41, and a second rear arc edge 4231 at one end away from the second shaft hole 41; The two front arc edges 4221 are 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 elasticity for the expansion and deformation of the second long axis hole 42, 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 convex portion 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.

[0041] In the above structure, when the pivot 2 is located in the first and second front spaces 322 and 422, a gap may be left between the first and second front arc edges 3221 and 4221 and the local surface of the pivot 2. The gap is used to cooperate with the expansion of the first and second front concave portions 3222 and 4222 to temporarily elastically expand the first and second front spaces 322 and 422, so as to ensure that the pivot 2 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 the pivot 2 is positioned in the first and second rear spaces 323 and 423, a gap may be left between the first and second rear arc edges 3231 and 4231 and the local surface of the pivot 2. By utilizing the gap and the expansion of the first and second rear recesses 3232 and 4232, the first and second rear spaces 323 and 423 can be temporarily elastically expanded to ensure that the pivot 2 can completely pass through the first and second arc-shaped protrusions 321 and 421 and enter the first and second rear spaces 323 and 423.

[0042] In a feasible embodiment, the first and second torsion components 3 and 4 can be respectively provided with the first and second stop components 5 and 6 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 with each of the first torsion 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 2; each of the second stop plates 60 is respectively overlapped with each of the second torsion 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 2, so as to prevent each of the pivots 2 from loosening from each of the first and second torsion plates 30 and 40.

[0043] In this embodiment, each pivot 2 is provided with a coupling hole 21 on an end face away from each branch 71, and a pressure cover 8 is provided next to the coupling hole 21. 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 21, so that each pressure cover 8 can be coupled and fixed to the end of each pivot 2.

[0044] Please refer to Figures 5 to 8 As shown, it can be seen that in actual application, when the flexible sheet 1 is in a fully extended flat state (such as Figure 5 As shown), part of the pivot 2 is located in the first rear space 323 of the first long axis hole 32, and can be 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 22 of the pivot 2 rotates to a position of local small angle interference with the second straight edge 412 of the second axis hole 41, and the adjacent pivot 2 is located in the second rear space 423 of 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 22 of the adjacent pivot 2 rotates to a position of local small angle interference with the first straight edge 312 of the first axis hole 31 (as shown). Figure 6 As shown); by virtue of the mechanism that the pivots 2 are 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 22 to rotate to be completely flat, which can drive the pivots 2 (via the bracket unit 70 of the bracket assembly 7) to drive the flexible plate 1 to generate a force to keep it straight, so that the flexible plate 1 has sufficient structural strength to withstand the operating force.

[0045] When the flexible sheet 1 is in a fully bent and rolled-up state (such as Figure 7As shown), part of the pivot 2 is located in the first front space 322 of the first long axis hole 32, and can be positioned by the first front stop portion 3211 cooperating with the first front arc edge 3221 to abut against each other, and at the same time, the flat surface 22 of the pivot 2 is rotated to a position of local large-angle interference with the second straight edge 412 of the second axis hole 41; and the adjacent pivot 2 is located in the second front space 422 of the second long axis hole 42, and can be positioned by the second front stop portion 4211 cooperating with the second front arc edge 4221 to abut against each other, and at the same time, the flat surface 22 of the adjacent pivot 2 is rotated to a position of local large-angle interference with the first straight edge 312 of the first axis hole 31 (as shown Figure 8 As shown in the figure, since the guiding force generated by the large-angle interference between the first and second straight edges 312, 412 and the flat bevel surface 22 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 means of the mechanism that each pivot 2 is positioned in the first and second front spaces 322, 422, and each pivot 2 can (via the bracket unit 70 of the bracket assembly 7) drive the flexible plate 1 to maintain bending and form a position.

[0046] The above structure of the utility model has the following characteristics when applied in practice:

[0047] 1. When the flexible sheet 1 is stretched straight, the first and second straight edges 312 and 412 have the characteristic of guiding the flat surface 22 to rotate to be completely flat, and the pivots 2 are positioned in the first and second rear spaces 323 and 423, so that each pivot 2 can link the flexible sheet 1 to generate a force to keep it straight, so as to maintain the structural strength required to withstand the operating force.

[0048] 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 2 in the first and second front spaces 322 and 422 or the first and second rear spaces 323 and 423, so that the flexible sheet 1 can form a self-locking (locked and fixed) state in different positions such as bending, rolling up or straight stretching.

[0049] 3. The pivots 2 are arranged on the flexible sheet 1 at intervals, so when the pivots 2 cooperate with the first and second torsion components 3 and 4 to move, no bending or sharp convex parts 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 2, so as to effectively avoid wear and damage to the device on the flexible sheet 1.

[0050] 4. During the unfolding or bending process, the flexible sheet 1 directly drives the pivots 2 to pivot synchronously, so that the first and second torsion sheets 30 and 40 can move synchronously; and because there is no direct contact mechanism between the fixed parts (bracket units 70) of the pivots 2, there will be no jamming of the activity when the flexible sheet 1 is unfolded or bent, thereby ensuring the smoothness of the overall unfolding or bending operation.

[0051] In summary, the pivot torque mechanism of the utility model can achieve the pre-tightening and self-locking functions, and can effectively prevent gravity sagging to ensure that the extension and bending states are stable and reliable. The above description is only a description of the preferred embodiment of the utility model. For example, any changes, modifications, alterations or equivalent replacements based on the technical means and scope of the utility model should also fall within the protection scope of the utility model patent.

Claims

1. A pivot torque mechanism, characterized in that: include: An elastically bendable flexible sheet (1); A plurality of pivots (2) are arranged at equal intervals and synchronously linked on the outside of a surface side of the flexible sheet (1), and the centers of the pivots (2) are connected to form a connecting line (L), and the connecting line (L) is parallel to the flexible sheet (1); A torsion chain assembly (340) is composed of a first torsion assembly (3) and a second torsion assembly (4) connected in series; the first torsion assembly (3) has at least one first torsion plate (30) located at a first row connection position, each of the first torsion plates (30) is respectively provided with a first axial hole (31) and a first long axis hole (32); the second torsion assembly (4) has at least one second torsion plate (40) located at a second row connection position, the first row connection position and the second row connection position are parallel to each other, each of the second torsion plates (40) is respectively provided with a second axial hole (41) and a second long axis hole (42), the second axial hole (41) corresponds to the first long axis hole (31) and the second long axis hole (32). 2), the second long axis holes (42) correspond to the first axis holes (31) respectively, and are respectively penetrated by the pivots (2) and pivotally connected in series, so that the second torsion plate (40) is respectively arranged in a series state by overlapping with the first torsion plate (30) through the pivots (2); 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 (2) 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 pivot torque mechanism according to claim 1, wherein: 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 of the pivots (2) is provided with a flat surface (22); when the flexible sheet (1) is in a fully extended and straight state, each of the flat surfaces (22) 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 of the first torque components (3) and the second torque components (4) respectively generates a force that pushes each of the pivots (2) toward keeping the flexible sheet (1) straight.

3. The pivot torque mechanism according to claim 1, wherein: 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 (2); 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).

4. The pivot torque mechanism according to claim 3, characterized in that: The first arc-shaped convex portion (321) is 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), and the second arc-shaped convex portion (421) is 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); when the flexible sheet (1) forms a bent state, each of the pivots (2) is located in the first front space (322) adjacent to the first long axis hole (32) and the second long axis hole (42). and the second front space (422), and are respectively abutted by the first front stopper (3211) and the second front stopper (4211), thereby forming a positioning effect that pushes the flexible sheet (1) to maintain a bent state; when the flexible sheet (1) is stretched to be straight, each pivot (2) 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 are respectively abutted by the first rear stopper (3212) and the second rear stopper (4212), thereby forming a positioning effect that pushes the flexible sheet (1) to maintain a straight state.

5. The pivot torque mechanism according to claim 2, wherein: 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.

6. The pivot torque mechanism according to claim 1 or 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).

7. The pivot torque mechanism according to claim 1, 2, 3 or 4, 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 pivot torque mechanism according to claim 1, 2, 3 or 4, characterized in that: A support assembly (7) is provided on one surface side of the flexible sheet (1). The support assembly (7) has a plurality of parallel and parallel long support units (70), and each of the pivots (2) is respectively connected to each of the support units (70).

9. The pivot torque mechanism according to claim 7, wherein: A support assembly (7) is provided on one surface side of the flexible sheet (1). The support assembly (7) has a plurality of parallel and parallel long support units (70), and each of the pivots (2) is respectively connected to each of the support units (70).

10. The pivot torque mechanism according to claim 8, wherein: Each of the bracket units (70) is provided with at least one branch (71), and each of the branch (71) is penetrated by an embedding hole (72) capable of embedding each of the pivots (2).

11. The pivot torque mechanism according to claim 9, wherein: Each of the bracket units (70) is provided with at least one branch (71), and each of the branch (71) is penetrated by an embedding hole (72) capable of embedding each of the pivots (2).

12. The pivot torque mechanism according to claim 10, wherein: Each pivot (2) is covered with a pressure cover (8) at the end away from each branch (71) and after penetrating and pivoting the torsion chain assembly (340).

13. The pivot torque mechanism according to claim 11, wherein: Each pivot (2) is covered with a pressure cover (8) at the end away from each branch (71) and after penetrating and pivoting the torsion chain assembly (340).

14. The pivot torque mechanism according to claim 12, wherein: Each pivot (2) is provided with a coupling hole (21) on the end surface away from each branch (71), and each pressure cover (8) is provided with a through hole (81). A plurality of coupling members (82) penetrate through each through hole (81) and are detachably fixed in each coupling hole (21), so that each pressure cover (8) can cover the end portion of each pivot (2).

15. The pivot torque mechanism according to claim 13, wherein: Each pivot (2) is provided with a coupling hole (21) on the end surface away from each branch (71), and each pressure cover (8) is provided with a through hole (81). A plurality of coupling members (82) penetrate through each through hole (81) and are detachably fixed in each coupling hole (21), so that each pressure cover (8) can cover the end portion of each pivot (2).

Images