Pivot torsion mechanism

Abstract

The invention 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 the line of centers of the pivots 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] This invention relates to a pivot torque mechanism, and more particularly to a torque mechanism with pre-tensioning and self-locking functions that can effectively prevent gravity sagging and ensure that the extension and bending states are maintained stably and reliably. Background Technology

[0002] With the increasing widespread application of wrist-worn flexible screens, various corresponding pivot torque mechanisms have also been disclosed. For example, Chinese Patent Application No. CN 111556687B discloses a cover and a smart bracelet, mainly featuring a synchronization component between a housing and a cover that are joined together. The housing has a first housing, two third housings, and a plurality of second housings arranged side by side. The cover has a first cover, two third covers, and a plurality of second covers, which are respectively joined to the first, third, and second housings. The synchronization component has a plurality of partially overlapping and staggered hinge bases, each hinge base having a shaft component that can pass through the staggered first, second, and third hinge groups and a damping chain. The damping chain has... A plurality of partially overlapping and staggered strips are arranged, each strip having an elongated damping groove and a shaft hole, which are respectively fitted onto adjacent shaft components. The damping groove has a first position groove and a second position groove at both ends, and has an open notch at the end near the first position groove. The damping groove clamps the shaft component, generating resistance (torsion) during pivoting. When the synchronization component is in a fully extended state, each shaft component is located in the first position groove, and when the synchronization component is in a fully bent state, each shaft component is located in the second position groove, thereby accommodating the change in the inner length of the synchronization component.

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

[0004] 1. Since most of the aforementioned wrist-worn flexible screens (or smart bracelets) require the screen to be unfolded into a flat state for operation, the damping grooves of the damping chain and the shaft component only provide simple torque (frictional resistance) without guiding movement or locking at specific angles (fully unfolded or fully bent). Therefore, it cannot be positioned when the flexible screen is fully bent or fully extended, and when force is applied to touch the unfolded flexible screen, the damping chain is prone to bending and deformation due to the inability to withstand the applied force, directly affecting the user's operation of the flexible screen and resulting in serious application deficiencies.

[0005] 2. Since the housing is formed by connecting the first, second, and third housings with flat top surfaces, when the housing is bent, a bent, pointed protrusion will be formed at the joint between the first, second, and third housings. This uneven pointed protrusion will not only affect the flatness of the flexible screen set on the top surface of the housing, but more seriously, it will cause wear and damage to the bottom of the flexible screen.

[0006] 3. Since the adjacent hinge bases of the synchronization component are connected to each other by plugging in local parts to form a movable connection, the adjacent hinge bases will generate a large frictional resistance during the movement process. At the same time, when the adjacent hinge bases are extended, retracted and bent, they are very likely to get stuck at certain specific angles, affecting the smoothness of the overall unfolding or bending operation.

[0007] 4. Since the various strips of the damping chain are linked only by the torque (frictional resistance) between the damping groove and the shaft component, when the housing begins to bend, the first, second, and third housings in each part often cannot maintain synchronous bending, which can easily cause uneven curvature of the bending of each part of the housing, affecting the product's refinement and overall quality.

[0008] In view of the aforementioned drawbacks of the pivot torque mechanism commonly used in wrist-worn flexible screens in practical applications, the inventors researched ways to improve these drawbacks, and finally the present invention was developed. Summary of the Invention

[0009] The main objective of this invention is to provide a pivot torque mechanism, which comprises a plurality of equally spaced pivots on the outer surface of an elastically bendable flexible sheet, with the center line of each pivot parallel to the flexible sheet. Each of the plurality of first torque sheets has a first shaft hole and a first long shaft hole, and each of the plurality of second torque sheets has a second shaft hole corresponding to the first long shaft hole and a second long shaft hole corresponding to the first shaft hole. Each pivot passes through either the first long shaft hole and the second shaft hole, or both, so that each second torque sheet is connected to each of the first torque sheets in an overlapping arrangement via the pivot. The first and second long shaft holes are each provided with a stop portion. When the flexible sheet changes its active state in response to external force, it can synchronously move each pivot in the first and second long shaft holes to adapt to the change in connection length between the first and second torsion plates as the flexible sheet moves. In conjunction with each pivot in the first and second long shaft holes, it forms an interference with each stop, so that a self-locking or positioning mechanism is established between the first and second torsion plates. When the flexible sheet is fully extended, each pivot can locally interfere with each first and second shaft hole, so that each pivot can generate a force to push the flexible sheet to keep it straight under the action of each torsion plate, so that the flexible sheet has the structural strength required to withstand the operating force.

[0010] Another object of the present invention is to provide a pivot torque mechanism, wherein the first and second long shaft holes are respectively provided with first and second arc-shaped protrusions in the middle section. The first and second arc-shaped protrusions enable the first and second long shaft holes to form first and second front spaces close to the first and second shaft holes, and first and second rear spaces away from the first and second shaft holes, respectively. The first and second arc-shaped protrusions are respectively provided with first and second front stop portions and first and second rear stop portions, respectively corresponding to the first and second front spaces and the first and second rear spaces. By pivoting and moving in the first and second front spaces or the first and second rear spaces, and by using the first and second front stop portions or the first and second rear stop portions to form a stop and position, the flexible sheet can be positioned in different positions of complete bending or complete extension.

[0011] Another object of the present invention is to provide a pivot torque mechanism, wherein each pivot is provided with a flat surface, and the first and second shaft holes are respectively provided with first and second straight edges. When the flexible sheet is fully extended, the flat surface of each pivot rotates to a position that partially interferes with the first and second straight edges, so that each pivot can drive the flexible sheet to generate a force to keep it straight.

[0012] Another objective of this invention is to provide a pivot torque mechanism in which the flexible sheet directly drives each pivot to rotate synchronously during the unfolding or bending process, so that each of the first and second torque sheets can also move synchronously; and there is no direct contact or abutment mechanism between the fixed parts of each pivot, so it is not easy for the flexible sheet to jam during unfolding or bending, thus ensuring the smoothness of the overall unfolding or bending operation; since each pivot is spaced apart on the flexible sheet, when the flexible sheet is bent, the elastic bending of the flexible sheet itself can keep the pivots on a smooth arc surface, so that no bending or sharp protrusions are generated on the flexible sheet, thereby effectively avoiding wear and damage to the flexible screen on the flexible sheet.

[0013] To achieve the above objectives and effects, the technical means adopted by the present invention are as follows: The present invention provides a pivot torque mechanism, comprising: a flexible sheet that can be elastically bent; a plurality of pivots, which are equally spaced and synchronously connected on the outer surface of one side of the flexible sheet, the centers of each pivot being connected to form a connecting line, the connecting line being parallel to the flexible sheet; a torque chain assembly consisting of a first torque component and a second torque component connected in series; the first torque component having at least one first torque piece located in a first row connection position, each first torque piece having a first shaft hole and a first elongated shaft hole respectively; the second torque component having at least one second torque piece located in a second row connection position, the first... The first and second joint positions are parallel to each other. Each of the second torsion plates is provided with a second shaft hole and a second long shaft hole. The second shaft hole corresponds to the first long shaft hole, and the second long shaft hole corresponds to the first shaft hole. They are connected by each pivot, so that the second torsion plates are arranged in a series with the first torsion plates through each pivot. The flexible plate can move between a straight and bent state in response to external force operation. Each pivot can adapt to the change in the distance between the pivots caused by the straight and bent movements of the first and second torsion components through the displacement space provided by the first and second long shaft holes.

[0014] According to the above structure, the edge of the first shaft hole is provided with a first external notch and a first straight edge, the edge of the second shaft hole is provided with a second external notch 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 that partially interferes with the first and second straight edges at an angle, so that each of the first torque components and the second torque components generates a force that pushes each pivot toward keeping the flexible sheet straight.

[0015] According to the above structure, the first and second long shaft holes are respectively provided with inwardly protruding first and second arc-shaped protrusions on at least one side of the middle section of the pivot displacement path. The first arc-shaped protrusion can define the interior of the first long shaft hole as a first front space close to the first shaft hole and a first rear space away from the first shaft hole; the second arc-shaped protrusion can define the interior of the second long shaft hole as a second front space close to the second shaft hole and a second rear space away from the second shaft 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 is in a bent state, each pivot is located in the first and second front spaces of the first and second long shaft holes, and is respectively abutted by the first and second front stops portions, thereby forming a positioning function to push the flexible sheet to maintain the bent state; when the flexible sheet is stretched into a straight state, each pivot is located in the first and second rear spaces of the first and second long shaft holes, and is respectively abutted by the first and second rear stops portions, thereby forming a positioning function to push the flexible sheet to maintain the straight state.

[0017] According to the above structure, the ends of the first and second axial holes that are away from the first and second outer notches are respectively connected to the first and second hollow holes via the first and second inner notches.

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

[0019] According to the above structure, the first and second torque components are respectively combined with a first and a second stop component, and the first and second stop components each have a plurality of first and second stop plates; each first stop plate is respectively stacked on each first torque plate, and each first stop plate is respectively provided with a first limiting hole corresponding to the first shaft hole and a first limiting elongated hole corresponding to the first long shaft hole; each second stop plate is respectively stacked on each second torque plate, and each second stop plate is respectively provided with a second limiting hole corresponding to the second shaft hole and a second limiting elongated hole corresponding to the second long shaft hole.

[0020] According to the above structure, a support assembly is provided on one side of the flexible sheet, the support assembly having a plurality of parallel elongated support units, and each pivot is respectively coupled to each support unit.

[0021] According to the above structure, each of the support units is provided with at least one branch, and each branch is provided with a fitting hole that can be nested in each of the pivots.

[0022] According to the above structure, each of the pivots is covered with a cap at its end, which is away from each of the branches and passes through the end of the torsion chain assembly.

[0023] According to the above structure, each pivot has a connecting hole on an end face away from each branch, and each cap has a through hole. By means of a plurality of connecting members passing through each through hole and being detachably fixed in each connecting hole, each cap can cover the end portion of each pivot.

[0024] The pivot torque mechanism of the present invention can achieve pre-tightening and self-locking functions, effectively preventing gravity sagging and ensuring that the extension and bending states remain stable and reliable.

[0025] To provide a more concrete understanding of the above-mentioned objectives, effects, and features of the present invention, the following description is provided with reference to the accompanying drawings. Attached Figure Description

[0026] Figure 1 This is a three-dimensional exploded structural diagram of the present invention.

[0027] Figure 2 This is a side view schematic diagram of the arrangement of the first and second torsion plates and the relative positions of each pivot in the present invention.

[0028] Figure 3 This is a schematic diagram of a partial combination of the present invention and related components in practical application.

[0029] Figure 4 yes Figure 3 Overall combined appearance diagram.

[0030] Figure 5 This is a schematic diagram of the usage state of the present invention (I); it reveals the first and second torque components in a fully extended and flat state.

[0031] Figure 6 yes Figure 5 Enlarged diagram of part A.

[0032] Figure 7 This is a schematic diagram (II) of the usage state of the present invention; it reveals the first and second torsion components in a fully bent and coiled state.

[0033] Figure 8 yes Figure 7 Enlarged diagram of part B.

[0034] Figure reference numerals: 1-Flexible sheet; 2-Pivot; 21-Connecting hole; 22-Cut surface; 3-First torque assembly; 30-First torque plate; 31-First shaft hole; 311-First outer notch; 312-First straight edge; 313-First inner notch; 314-First hollow hole; 32-First long shaft hole; 321-First arc-shaped protrusion; 3211-First front stop; 3212-First rear stop; 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-Torque chain assembly; 4-Second torque assembly; 40-Second torque plate; 41-Second shaft hole; 411-Second outer notch; 412-Second… Straight edge; 413-Second inner notch; 414-Second hollow hole; 42-Second long shaft 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 piece; 51-First limiting hole; 52-First limiting long hole; 6-Second stop assembly; 60-Second stop piece; 61-Second limiting hole; 62-Second limiting long hole; 7-Bracket assembly; 70-Bracket unit; 71-Support; 72-Embedding hole; 8-Cap; 81-Through hole; 82-Connecting piece; L-Connecting line. Detailed Implementation

[0035] Please refer to Figures 1 to 4 As shown, the main structure of the present invention includes: a flexible sheet 1, a pivot 2, and a torsion chain assembly 340; wherein the flexible sheet 1 is a sheet-like body that can be elastically bent; a plurality of pivots 2 are equally spaced on the outer surface of the flexible sheet 1 and can maintain synchronous movement, the connecting line L formed by the center connection 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 support assembly 7 may be provided on one side of the flexible sheet 1 as needed. The support assembly 7 has a plurality of parallel elongated support units 70 arranged at equal intervals. Each support unit 70 is provided with at least one branch 71, and each branch 71 is provided with a through hole 72. Each pivot 2 is respectively inserted into each of the through holes 72, so that the connecting 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 shaft hole 31 and a first long shaft hole 32, respectively fitted onto each of the adjacent pivots 2. The first shaft hole 31 is provided with a first external notch 311 and a first straight edge 312 at its edge. The first long shaft hole 32 is provided with a first arc-shaped protrusion 321 in its middle section. The first arc-shaped protrusion 321 enables the first long shaft hole 32 to form a first front space 322 close to the first shaft hole 31 and a first rear space 323 away from the first shaft hole 31.

[0038] In one 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, in addition to providing elasticity for the expansion and deformation of the first shaft hole 31, can also accommodate grease required for lubrication. The first elongated shaft hole 32 has a first front arc edge 3221 at the end near the first shaft hole 31 and a first rear arc edge 3231 at the end away from the first shaft hole 31. A first front recess 3222 is provided on a front arc edge 3221, and a first rear recess 3232 is provided 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 shaft hole 32, and can also accommodate the grease required for lubrication. The first arc-shaped protrusion 321 is provided with a first front stop 3211 facing the first front space 322 and a first rear stop 3212 facing the first rear space 323.

[0039] The second torque assembly 4 has a plurality of second torque plates 40, each of which is provided with a second shaft hole 41 and a second long shaft hole 42. Each second shaft hole 41 corresponds to a first long shaft hole 32, and each second long shaft hole 42 corresponds to a first shaft hole 31. They are respectively fitted onto each of the adjacent pivots 2, so that each second torque plate 40 can be connected to each of the first torque plates 30 in an overlapping arrangement via each of the pivots 2. A second external notch 411 and a second straight edge 412 are provided at the edge of the second shaft hole 41. The second long shaft hole 42 is provided with a protruding second arc-shaped protrusion 421 in the middle section. The second arc-shaped protrusion 421 enables the second long shaft hole 42 to form a second front space 422 close to the second shaft hole 41 and a second rear space 423 away from the second shaft hole 41.

[0040] In one 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, in addition to providing elasticity for the expansion and deformation of the second shaft hole 41, can also accommodate grease required for lubrication. The second elongated shaft hole 42 has a second front arc edge 4221 at the end near the second shaft hole 41 and a second rear arc edge 4231 at the 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 provided with a second rear recess 4232. The second front recess 4222 and the second rear recess 4232 can not only provide elasticity for the expansion and deformation of the second long shaft hole 42, but also accommodate the grease required for lubrication; and the second arc-shaped protrusion 421 is respectively provided with a second front stop 4211 facing the second front space 422 and a second rear stop 4212 facing the second rear space 423.

[0041] In the above structure, when the pivot 2 is positioned in the first and second front spaces 322 and 422, a gap can be left between the first and second front arc edges 3221 and 4221 and the local surface of the pivot 2. By using this gap in conjunction with the expansion of the first and second front recesses 3222 and 4222, the first and second front spaces 322 and 422 can be temporarily elastically expanded to ensure that the pivot 2 can completely pass through the first and second arc 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 using this gap in conjunction with 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 protrusions 321 and 421 into the first and second rear spaces 323 and 423.

[0042] In a feasible embodiment, the first and second torque components 3 and 4 may be respectively equipped with first and second stop components 5 and 6 as needed; wherein the first and second stop components 5 and 6 each have a plurality of first and second stop plates 50 and 60; each first stop plate 50 is respectively stacked on each first torque plate 30, and each first stop plate 50 is respectively provided with a first limiting hole 51 corresponding to the first shaft hole 31 and a first limiting elongated hole 52 corresponding to the first long shaft hole 32, and respectively fitted onto each adjacent pivot 2; each second stop plate 60 is respectively stacked on each second torque plate 40, and each second stop plate 60 is respectively provided with a second limiting hole 61 corresponding to the second shaft hole 41 and a second limiting elongated hole 62 corresponding to the second long shaft hole 42, and respectively fitted onto each adjacent pivot 2, thereby preventing each pivot 2 from loosening from each of the first and second torque plates 30 and 40.

[0043] In this embodiment, each pivot 2 is provided with a connecting hole 21 on the end face away from each branch 71, and a pressure cap 8 is provided next to the connecting hole 21. Each pressure cap 8 is provided with a through hole 81. By means of a connecting member 82 passing through each through hole 81 and extending into each connecting hole 21, each pressure cap 8 can be connected and fixed to the end of each pivot 2.

[0044] Please refer to Figures 5 to 8 As shown, in practical applications, when the flexible sheet 1 is in a fully extended, flat state (such as...), Figure 5 As shown), a portion of the pivot 2 is located in the first rear space 323 within the first long shaft hole 32, and can be positioned by the first rear stop 3212 and the first rear arc edge 3231 abutting against each other. Simultaneously, the flat surface 22 of the pivot 2 rotates to a position where it partially interferes with the second straight edge 412 of the second shaft hole 41 at a small angle. The adjacent pivot 2 is located in the second rear space 423 within the second long shaft hole 42, and can be positioned by the second rear stop 4212 and the second rear arc edge 4231 abutting against each other. Simultaneously, the flat surface 22 of the adjacent pivot 2 rotates to a position where it partially interferes with the first straight edge 312 of the first shaft hole 31 at a small angle (e.g., ...). Figure 6 (As shown); by means of the mechanism in which each of the pivots 2 is positioned in the first and second rear spaces 323 and 423, the first and second torsion plates 30 and 40 can be self-locked (locked and fixed) in a straight and extended state; and the first and second straight edges 312 and 412 have the function of guiding the flat surface 22 to rotate to a completely flat position, which can drive each of the pivots 2 to (via the support unit 70 of the support 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, coiled state (e.g.) Figure 7As shown), a portion of the pivot 2 is located in the first front space 322 within the first long shaft hole 32, and can be positioned by the first front stop 3211 and the first front arc edge 3221 abutting against each other. Simultaneously, the planar surface 22 of the pivot 2 rotates to a position where it partially interferes with the second straight edge 412 of the second shaft hole 41 at a large angle. The adjacent pivot 2 is located in the second front space 422 within the second long shaft hole 42, and can be positioned by the second front stop 4211 and the second front arc edge 4221 abutting against each other. Simultaneously, the planar surface 22 of the adjacent pivot 2 rotates to a position where it partially interferes with the first straight edge 312 of the first shaft hole 31 at a large angle (e.g., ...). Figure 8 As shown, since the guiding force generated by the large-angle interference between the first and second straight edges 312, 412 and the flat surface 22 is small, the first and second torsion plates 30, 40 can be self-locked (fixed in position) in a bent and rolled-up state by means of the mechanism in which each of the pivots 2 is positioned in the first and second front spaces 322, 422, and each of the pivots 2 can (via the support unit 70 of the support assembly 7) link the flexible plate 1 to keep it bent and form a position.

[0046] When applied in practice, the structure of the present invention has the following characteristics:

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

[0048] 2. The first and second long shaft holes 32 and 42 are respectively provided with first and second arc-shaped protrusions 321 and 421 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 (locking and fixing position) state in different positions such as bending and coiling or straight extension.

[0049] 3. Each pivot 2 is spaced apart on the flexible sheet 1. Therefore, when each pivot 2 moves in conjunction with the first and second torque components 3 and 4, there will be no bending or sharp protrusions. Combined with the bending elasticity of the flexible sheet 1 itself, the flexible sheet 1 can maintain a smooth arc surface between each pivot 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 each pivot 2 to rotate synchronously, so that each of the first and second torsion plates 30 and 40 can move synchronously. Since there is no direct contact mechanism between the fixed parts (support unit 70) of each pivot 2, there will be no movement jamming when the flexible sheet 1 unfolds or bends, which can ensure the smooth operation of the overall unfolding or bending.

[0051] In summary, the pivot torque mechanism of the present invention effectively achieves pre-tensioning and self-locking functions, preventing gravity-induced sagging and ensuring stable and reliable operation during extension and bending. The above description is merely an illustration of a preferred embodiment of the present invention. Any variations, modifications, alterations, or equivalent substitutions derived from the technical means and scope of the present invention should also fall within the protection scope of this patent.

Claims

1. A pivot torque mechanism, characterized in that, include: A flexible sheet that can be bent elastically (1); Multiple pivots (2) are equally spaced and synchronously connected on the outer side of the flexible sheet (1). The centers of each pivot (2) are connected to form a connecting line (L), which is parallel to the flexible sheet (1). A 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 at least one first torsion plate (30) located at a first row connection position, and each of the first torsion plates (30) is provided with a first shaft hole (31) and a first long shaft hole (32). The second torsion component (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 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 (31) and the second long shaft hole (32). 2) The second long shaft hole (42) corresponds to the first shaft hole (31) respectively, and is pivotally connected by each of the pivots (2) so that the second torsion plate (40) is arranged in a series with the first torsion plate (30) through each of the pivots (2); the flexible plate (1) can move between a straight and bent state in response to external force operation, and each of the pivots (2) can adapt to the change in the distance between the pivots (2) caused by the straight and bent movements of the first torsion assembly (3) and the second torsion assembly (4) as the flexible plate (1) moves through the displacement space provided by the first long shaft hole (32) and the second long shaft hole (42).

2. The pivot torque mechanism as described in claim 1, characterized in that: The first shaft hole (31) has an externally open first outer notch (311) and a first straight edge (312) at its edge, and the second shaft hole (41) has an externally open second outer notch (411) and a second straight edge (412) at its edge. Each pivot (2) has a flat surface (22). When the flexible sheet (1) is in a fully extended straight state, each flat surface (22) rotates to a position that has an angle of partial interference with the first straight edge (312) and the second straight edge (412), so that each first torque component (3) and second torque component (4) generates a force that pushes each pivot (2) toward keeping the flexible sheet (1) straight.

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

4. The pivot torque mechanism as described in claim 3, characterized in that: The first arc-shaped protrusion (321) is provided with a first front stop (3211) facing the first front space (322) and a first rear stop (3212) facing the first rear space (323), and the second arc-shaped protrusion (421) is provided with a second front stop (4211) facing the second front space (422) and a second rear stop (4212) facing the second rear space (423); when the flexible sheet (1) is in a bent state, each of the pivots (2) is located in the first front space (322) of the first long shaft hole (32) and the second long shaft hole (42). In the second front space (422), the pivot (2) is abutted by the first front stop (3211) and the second front stop (4211) respectively, thus forming a positioning function to push the flexible piece (1) to maintain a bent state; when the flexible piece (1) is stretched into a straight state, each pivot (2) is located in the first rear space (323) and the second rear space (423) of the first long shaft hole (32) and the second long shaft hole (42), and is abutted by the first rear stop (3212) and the second rear stop (4212) respectively, thus forming a positioning function to push the flexible piece (1) to maintain a straight state.

5. The pivot torque mechanism as described in claim 1 or 2, characterized in that: The ends 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) are respectively 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).

6. The pivot torque mechanism as described in claim 1 or 3, characterized in that: The first long shaft hole (32) and the second long shaft hole (42) are respectively provided with a first front recess (3222) and a second front recess (4222) at one end close to the first shaft hole (31) and the second shaft hole (41), and respectively provided with a first rear recess (3232) and a second rear recess (4232) at one end away from the first shaft hole (31) and the second shaft hole (41).

7. The pivot torque mechanism as described in 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). The first stop assembly (5) and the second stop assembly (6) have a plurality of first stop plates (50) and second stop plates (60). Each first stop plate (50) is stacked on each first torque plate (30). Each first stop plate (50) is provided with a first limiting hole (51) corresponding to the first shaft hole (31) and a first limiting elongated hole (52) corresponding to the first long shaft hole (32). Each second stop plate (60) is stacked on each second torque plate (40). Each second stop plate (60) is provided with a second limiting hole (61) corresponding to the second shaft hole (41) and a second limiting elongated hole (62) corresponding to the second long shaft hole (42).

8. The pivot torque mechanism as described in claim 1, 2, 3, or 4, characterized in that: A support assembly (7) is provided on one side of the flexible sheet (1), the support assembly (7) having a plurality of parallel elongated support units (70), and each pivot (2) is respectively coupled to each of the support units (70).

9. The pivot torque mechanism as described in claim 7, characterized in that: A support assembly (7) is provided on one side of the flexible sheet (1), the support assembly (7) having a plurality of parallel elongated support units (70), and each pivot (2) is respectively coupled to each of the support units (70).

10. The pivot torque mechanism as described in claim 8, characterized in that: Each of the support units (70) is provided with at least one branch (71), and each branch (71) is provided with a through hole (72) that can be nested in each of the pivots (2).

11. The pivot torque mechanism as described in claim 9, characterized in that: Each of the support units (70) is provided with at least one branch (71), and each branch (71) is provided with a through hole (72) that can be nested in each of the pivots (2).

12. The pivot torque mechanism as described in claim 10, characterized in that: Each of the pivots (2) is covered with a cap (8) at the end that is away from each of the branches (71) and passes through the torsion chain assembly (340).

13. The pivot torque mechanism as described in claim 11, characterized in that: Each of the pivots (2) is covered with a cap (8) at the end that is away from each of the branches (71) and passes through the torsion chain assembly (340).

14. The pivot torque mechanism as described in claim 12, characterized in that: Each pivot (2) has a connecting hole (21) on its end face away from each branch (71), and each cap (8) has a through hole (81). By means of a plurality of connecting parts (82) passing through each through hole (81) and being detachably fixed in each connecting hole (21), each cap (8) can cover the end of each pivot (2).

15. The pivot torque mechanism as described in claim 13, characterized in that: Each pivot (2) has a connecting hole (21) on its end face away from each branch (71), and each cap (8) has a through hole (81). By means of a plurality of connecting parts (82) passing through each through hole (81) and being detachably fixed in each connecting hole (21), each cap (8) can cover the end of each pivot (2).

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