CN210118343U

CN210118343U - Bendable support frame

Info

Publication number: CN210118343U
Application number: CN201920603946.5U
Authority: CN
Inventors: 徐安赐; 吴阳中; 许钰峰
Original assignee: Shenzhen Fu Sata Communication Co Ltd; First Dome Corp
Current assignee: Shenzhen Fu Sata Communication Co Ltd; First Dome Corp
Priority date: 2019-04-26
Filing date: 2019-04-26
Publication date: 2020-02-28
Anticipated expiration: 2029-04-26
Also published as: TWM583187U

Abstract

A foldable support frame comprises a support unit, at least one concentric pivoting unit and at least one synchronous pivoting unit. The supporting unit comprises a plurality of supporting pieces which extend along a first direction and are arranged side by side in sequence, and each supporting piece is provided with a supporting surface and a setting surface opposite to the supporting surface. The supporting surfaces are arranged adjacently in sequence to be suitable for the flexible screen to be arranged. The concentric pivoting unit comprises a plurality of concentric pivoting groups respectively arranged between two adjacent supporting pieces, and the concentric pivoting groups can enable the two adjacent supporting pieces to pivot relatively by taking a first axis which leans against a neutral layer of the flexible screen as an axis so as to prevent the flexible screen from being pulled when the bendable supporting frame is switched between an unfolding state and a folding state, and prevent the flexible screen from being damaged. The synchronous pivoting unit comprises a plurality of synchronous pivoting groups which are respectively arranged between three adjacent supporting pieces and enable the supporting pieces to pivot synchronously.

Description

Bendable support frame

Technical Field

The present invention relates to a bendable support frame, and more particularly to a bendable support frame for a flexible screen.

Background

In recent years, the related research and development of the flexible screen are gradually mature, and the flexible screen is more and more commonly applied to general electronic products, but when designing products, a supporting frame or a casing for the flexible screen cannot be matched with the perimeter change of the flexible screen when the flexible screen is folded, so that the flexible screen is gradually damaged by being pulled when being bent, and therefore, the design of the supporting frame or the casing is a serious subject.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a can improve the formula support frame of can buckling of an at least problem in the background art.

The utility model discloses a formula of can buckling support frame is applicable to and supplies flexible formula screen setting in some implementation modes appearance, the formula of can buckling support frame contains supporting element, an at least concentric pivot unit to and an at least synchronous pivot unit. The supporting unit comprises a plurality of supporting pieces which extend along a first direction and are arranged side by side in sequence, each supporting piece is provided with a supporting surface and a setting surface opposite to the supporting surface, and the supporting surfaces are arranged adjacently in sequence to be used for setting the flexible screen. The concentric pivoting unit comprises a plurality of concentric pivoting groups arranged between two adjacent supporting pieces respectively, each concentric pivoting group comprises a first pivoting piece arranged on the setting surface of one of the supporting pieces and a second pivoting piece arranged on the setting surface of the other one of the supporting pieces, the first pivoting piece is provided with a first arc-shaped sliding rail which is formed towards the first direction, the second pivoting piece is provided with a second sliding block which is formed towards the first direction and can correspondingly and slidably extend on the first sliding rail, the curvature center of the first sliding rail is far away from the setting surface than the supporting surface and leans against the neutral layer of the flexible screen in the thickness direction of the flexible screen, so that the two adjacent supporting pieces can be relatively pivoted by taking a first axis which passes through the curvature center and is parallel to the first direction as an axis. The synchronous pivoting unit comprises a plurality of synchronous pivoting groups which are respectively arranged between three adjacent supporting pieces, each synchronous pivoting group comprises a first base which is arranged on the setting surface of the supporting piece in the middle, two second bases which are respectively arranged on the setting surfaces of the supporting pieces on two sides, and two synchronous pivoting mechanisms which are arranged on the first bases and are respectively arranged on the two second bases, each synchronous pivoting mechanism can be pivoted on the first bases in a rotating mode by taking a second axis which is parallel to the first direction as an axis, and can be pivoted on the corresponding second bases in a rotating mode by taking a third axis which is parallel to the first direction as an axis, and the two synchronous pivoting mechanisms can be connected with each other in a relatively rolling mode so that the supporting pieces on two sides can be pivoted relative to the supporting piece in the middle synchronously. The foldable support frame can be switched between an unfolded state and a folded state, when the foldable support frame is in the unfolded state, the support surfaces of the support members are arranged adjacently in sequence along a second direction perpendicular to the first direction and jointly form a support plane extending along the second direction, and when the foldable support frame is in the folded state, the support surfaces of the support members jointly form a support arc surface protruding outwards.

In some embodiments, the second pivot further has a second slide rail formed in an arc shape toward the first direction, the first pivot further has a first slider formed in the first direction and slidably protruding from the second slide rail, and the first axis passes through a center of curvature of the first slide rail and a center of curvature of the second slide rail.

In some embodiments, the first sliding block has a cylindrical shape corresponding to the second sliding rail, and the second sliding block has a cylindrical shape corresponding to the first sliding rail.

In some embodiments, each of the synchronous pivoting mechanisms has a synchronous pivoting member rotatably pivoted to the first base along a second axis parallel to the first direction, and a sliding member slidably connected to the synchronous pivoting member and rotatably pivoted to the corresponding second base along a third axis parallel to the first direction, and the synchronous pivoting members of the two synchronous pivoting mechanisms are relatively rollably connected to each other.

In some embodiments, the contact surface between the two synchronous pivoting members is a toothed surface engaged with each other.

In some embodiments, two of the supporting members are respectively two supporting shells, each supporting shell has an accommodating space therein, and the installation surface of the supporting shell faces the accommodating space.

In some implementation forms, still include and cover the unit, it includes the base to cover the unit, and two apron, the base is followed first direction extends and locates be located the face of setting that is located the person in the middle among the support piece, the base has and locates respectively the face of setting is located two setting portions of neighbouring both sides department on first direction to and connect between two setting portions and with support piece looks interval ground is along the connecting portion that first direction extends, the accommodation space of each support shell spare has the orientation the opening of base, the apron can be followed respectively the second direction slidable ground corresponds to wear to locate the opening, just the apron can be followed perpendicular to the direction of first direction is slided the pivot and is located the setting portion of base.

In some embodiments, each cover plate has a bottom plate portion opposite to the installation surface, and two side plate portions extending from two side edges of the bottom plate portion in the first direction toward the installation surface.

In some embodiments, each of the setting portions of the base has two pivoting chutes facing the connecting portion and respectively provided for the cover plate to pivot correspondingly, the pivoting chutes are formed along the first direction and extend in a direction perpendicular to the first direction in a manner of abutting against the connecting portion, and each of the cover plates further has two pivoting bosses extending from the bottom plate portion and respectively protruding into the corresponding pivoting chutes of the setting portions.

In some embodiments, the hinge assembly further includes at least one torsion unit, the torsion unit includes a third base and two torsion bars, the third base is disposed on a setting surface of the middle one of the supporting members, one end of each torsion bar is pivotally disposed on the third base in a tight fit manner, and the other end of each torsion bar is pivotally disposed on the side plate of the cover plate in a slidable manner along the second direction.

In some embodiments, the positioning device further comprises at least two positioning mechanisms, the positioning mechanisms are respectively disposed on the supporting shells and respectively correspond to the cover plates, each positioning mechanism comprises a fixing member disposed on the corresponding supporting shell, and a fastening member slidably disposed on the fixing member along the first direction, and an elastic element connected between the fixing member and the engaging member, wherein at least one first engaging groove and at least one second engaging groove are formed on the side plate of each cover plate in the first direction and are correspondingly matched with the corresponding engaging member, each clamping piece is correspondingly clamped with the corresponding first clamping groove in the unfolded state, each clamping piece is correspondingly clamped with the corresponding second clamping groove in the folded state, when the cover plate is in the unfolded state, the clamping pieces are pressed against the side plate parts of the corresponding cover plate.

The utility model discloses borrow by locating a plurality of concentric pivots group between two adjacent support piece respectively to make two adjacent support piece can with lean on partially the first axis of the neutral layer of flexible formula screen is the relative pivot of axle center, in order to prevent the bendable support frame can expand the state and pull when receiving the conversion between the receipts state flexible formula screen is avoided flexible formula screen consequently damages, and borrows by the synchronous pivot mechanism of synchronous pivot group makes the support piece that lies in both sides among the adjacent three support piece pivot for the support piece pivot that lies in the centre synchronously, and then makes support piece can pivot synchronously.

Drawings

Other features and advantages of the present invention will become apparent from the following detailed description of the preferred embodiments with reference to the accompanying drawings, in which:

fig. 1 is a perspective view of an embodiment of the foldable support frame of the present invention;

FIG. 2 is a perspective view of the embodiment from another perspective;

FIG. 3 is an exploded perspective view of FIG. 2;

FIG. 4 is a further exploded perspective view of FIG. 3;

FIG. 5 is a perspective view illustrating the concentric pivot group of the concentric pivot unit of the embodiment;

FIG. 6 is an exploded perspective view of FIG. 5;

FIG. 7 is a cross-sectional view illustrating the embodiment when the concentric pivoting groups have not pivoted relative to each other;

FIG. 8 is a sectional view illustrating the embodiment after the concentric pivoting groups are pivoted relative to each other;

FIG. 9 is a perspective view illustrating the synchronizing pivot group of the synchronizing pivot unit of the embodiment;

FIG. 10 is an exploded perspective view of FIG. 9;

FIG. 11 is a sectional view illustrating the embodiment when the synchronized pivoting groups have not been pivoted relative to each other;

FIG. 12 is a sectional view illustrating the relative pivoting of the synchronized pivoting groups of the embodiment;

FIG. 13 is a cross-sectional view of the embodiment in the expanded state;

FIG. 14 is a cross-sectional view of the embodiment between an expanded state and a collapsed state;

FIG. 15 is a cross-sectional view of the embodiment in a collapsed state;

FIG. 16 is a fragmentary exploded perspective view of the embodiment illustrating the cover unit, torsion unit and positioning mechanism of the embodiment, with the concentric pivot unit and the synchronizing pivot unit omitted; and

fig. 17 to 19 are a plurality of cross-sectional views illustrating a process of converting the unfolded state to the folded state according to the embodiment, and illustrate the covering unit, the torsion unit and the positioning mechanism according to the embodiment.

Detailed Description

Before the present invention is described in detail, it should be noted that in the following description, like elements are represented by like reference numerals.

Referring to fig. 1 to 4, an embodiment of the foldable supporting stand 10 of the present invention is suitable for providing a flexible screen 20, and the foldable supporting stand 10 includes a supporting unit 1, three concentric pivoting units 2, two synchronous pivoting units 3, a covering unit 4, two torsion units 5, and four positioning mechanisms 6.

The supporting unit 1 includes a plurality of supporting members 11 extending along a first direction D1 and arranged side by side in sequence, for example, plastic members or metal members. Each of the supporting members 11 has a supporting surface 111 and a setting surface 112 opposite to the supporting surface 111, and the supporting surfaces 111 are sequentially arranged adjacently to set the flexible screen 20. In the present embodiment, two supporting shell members 110 respectively extending along a second direction D2 perpendicular to the first direction D1 are disposed at two ends of the supporting member 11, each supporting shell member 110 has a first shell 110a and a second shell 110b assembled in a matching manner, and an accommodating space 110c defined by the first shell 110a and the second shell 110b and located inside, and the accommodating space 110c can accommodate a plurality of electronic components (not shown) and other related parts (not shown) electrically connected to the flexible screen 20. The supporting surface 111 and the setting surface 112 of the supporting shell 110 are located on the first casing 110a, and the setting surface 112 of the supporting shell 110 faces the accommodating space 110 c. Each supporting member 11 further has a mounting groove 113 for accommodating the flexible screen 20, and the supporting surfaces 111 are respectively located at the bottom of the mounting groove 113. It should be noted that, although the number of the supporting members 11 is seven in the embodiment, the number of the supporting members 11 may be adjusted according to the requirement, and is not limited thereto.

Referring to fig. 4 to 8, the concentric pivoting units 2 are disposed on the supporting members 11 at intervals along the first direction D1, and each concentric pivoting unit 2 includes a plurality of concentric pivoting sets 21 respectively disposed between two adjacent supporting members 11. Each of the concentric pivoting sets 21 includes a first pivoting member 211 disposed on the installation surface 112 of one of the supporting members 11, and a second pivoting member 212 disposed on the installation surface 112 of the other supporting member 11. The first pivot member 211 and the second pivot member 212 may be metal members, for example. The first pivot element 211 has a first arc-shaped slide rail 211a formed toward the first direction D1, the second pivot element 212 has a second slide block 212a formed toward the first direction D1 and slidably protruding from the first slide rail 211a, and a center of curvature of the first slide rail 211a is farther from the mounting surface 112 than the supporting surface 111 and is biased against the neutral layer 20a of the flexible screen 20 in the thickness direction thereof, so that two adjacent support elements 11 can pivot relatively around a first axis a1 passing through the center of curvature and parallel to the first direction D1. In detail, in the present embodiment, the curvature center of the first sliding rail 211a and the first axis a1 are coincident with the neutral layer 20a, but in a modified embodiment, the curvature center of the first sliding rail 211a and the first axis a1 are offset from the neutral layer 20a but do not coincide with the neutral layer 20a, that is, the positions of the curvature center of the first sliding rail 211a and the first axis a1 may be slightly adjusted according to design requirements, which is not limited by the present embodiment. In this embodiment, the second pivot element 212 further has a second slide rail 212b formed in an arc shape facing the first direction D1, the first pivot element 211 further has a first slide block 211b formed in the first direction D1 and slidably protruding from the second slide rail 212b, and the first axis a1 passes through a curvature center of the first slide rail 211a and a curvature center of the second slide rail 212 b. The first sliding block 211b is cylindrical corresponding to the second sliding rail 212b, and the second sliding block 212a is cylindrical corresponding to the first sliding rail 211 a. Moreover, the first pivot member 211 and the second pivot member 212 are both composed of a plurality of stamped sheets, and the first slider 211b and the second slider 212a are in the form of rotating shaft members and are penetratingly disposed on the first pivot member 211 and the second pivot member 212, so that the stamped sheets of the first pivot member 211 and the second pivot member 212 not only have high precision, but also can save production cost, but also are not limited thereto. It should be noted that, in a modified embodiment, the second slide rail 212b and the first slide block 211b may also be omitted, and in this modified embodiment, the structure of the second slide block 212a corresponds to the structure of the first slide rail 211a, that is, the shape of the second slide block 212a needs to be matched with the shape of the first slide rail 211a in a concave-convex manner, so as to prevent the second slide block 212a from rotating relatively when sliding in the first slide rail 211 a.

Referring to fig. 4, 9 to 12, the synchronous pivoting units 3 are disposed at intervals on the supporting member 11 along the first direction D1 and located between the adjacent concentric pivoting units 2, and two wire passing spaces S are formed between the synchronous pivoting units 3 and the middle concentric pivoting unit 2 for the connection wires (not shown) between the electronic components to pass through, but the arrangement of the concentric pivoting units 2 and the synchronous pivoting units 3 may be changed as required. Moreover, although the number of the concentric pivoting units 2 is three and the number of the synchronous pivoting units 3 is two in the embodiment, the number of the two is only required to be at least one and the number thereof can be adjusted according to the requirement, which is not limited to the embodiment. Each synchronous pivoting unit 3 comprises a plurality of synchronous pivoting sets 31 respectively arranged between three adjacent supporting pieces 11, each synchronous pivoting set 31 comprises a first base 311 arranged on the setting surface 112 of the supporting piece 11 in the middle, two second bases 312 respectively arranged on the setting surfaces 112 of the supporting pieces 11 at two sides, and two synchronous pivoting mechanisms 313 respectively disposed on the two second bases 312 and disposed on the first base 311, wherein each of the synchronous pivoting mechanisms 313 is pivotally disposed on the first base 311 with a second axis A2 parallel to the first direction D1 as an axis, and is pivotally installed on the corresponding second base 312 with a third axis A3 parallel to the first direction D1 as an axis, the two synchronous pivoting mechanisms 313 are connected with each other in a relatively rolling manner, so that the support members 11 on both sides can pivot synchronously with respect to the support member 11 in the middle. In detail, each synchronous pivoting mechanism 313 has a synchronous pivoting member 314 pivotally mounted on the first base 311 in a rotatable manner along a second axis a2 parallel to the first direction D1, and a sliding member 315 slidably connected to the synchronous pivoting member 314 and pivotally mounted on the corresponding second base 312 in a rotatable manner along a third axis A3 parallel to the first direction D1. The synchronous pivoting members 314 of the two synchronous pivoting mechanisms 313 are connected to each other in a relatively rolling manner, and the contact surfaces between the two synchronous pivoting members 314 are toothed surfaces 314a which are engaged with each other. In this embodiment, the synchronous pivoting member 314 has a sliding slot 314b extending along the second direction D2, and the sliding member 315 has a protrusion 315a slidably protruding from the sliding slot 314b, so that the synchronous pivoting member 314 and the sliding member 315 are slidably connected to each other. In an alternative embodiment, the sliding slot 314b is formed on the sliding member 315, and the protrusion 315a is formed on the synchronizing pivot 314. Each of the synchronous pivoting sets 31 further includes a plurality of rotating shaft members 316 disposed between the first base 311 and the synchronous pivoting member 314, and between the second base 312 and the sliding member 315, so that the above-mentioned members can be connected with each other in a relatively pivoting manner, but not limited thereto. The synchronous pivoting unit 3 has small space occupation ratio and simple and reliable structure. In addition, it should be noted that the concentric pivoting unit 2 and the synchronous pivoting unit 3 may be inserted into the supporting member 11 and fixed by welding or gluing, for example, as in the present embodiment, and in a modified embodiment, may also be fixed to the supporting member 11 by a screw locking method or other fixing methods.

Referring to fig. 4, 13 to 15, the foldable support stand 10 can be switched between an unfolded state and a folded state by the concentric pivoting unit 2 and the synchronous pivoting unit 3 (see fig. 13 to 15). In the unfolded state, the supporting surfaces 111 of the supporting members 11 are sequentially and adjacently arranged along the second direction D2 and jointly form a supporting plane extending along the second direction D2, in the collapsed state, the supporting surfaces 111 of the supporting members 11 jointly form an outwardly protruding supporting arc, and in the embodiment, in the collapsed state, the supporting shells 110 are mutually abutted in parallel. Referring to fig. 8 and 12, by using the plurality of concentric pivoting sets 21 respectively disposed between two adjacent supporting members 11, the two adjacent supporting members 11 can pivot relatively around the first axis a1 biased against the neutral layer 20a of the flexible screen 20, so as to prevent the flexible screen 20 from being pulled by the flexible supporting stand 10 when the flexible supporting stand is switched between the unfolded state and the folded state, and prevent the flexible screen 20 from being damaged, and by using the synchronous pivoting mechanism 313 of the synchronous pivoting set 31, the supporting members 11 on two sides of the three adjacent supporting members 11 can pivot synchronously relative to the supporting member 11 in the middle, so that the supporting members 11 can pivot synchronously. It should be noted that, in the present embodiment, the supporting surfaces 111 of the supporting members 11 are all flat surfaces, and therefore, in the retracted state, the supporting arc surface formed by the supporting surfaces 111 of the supporting members 11 is substantially composed of a plurality of flat surfaces, but in a modified embodiment, the supporting surfaces 111 of the supporting members 11 may also be arc surfaces, and should not be limited to the present embodiment.

Referring to fig. 3, 16 to 19, the covering unit 4 includes a base 41 and two cover plates 42, wherein the base 41 extends along the first direction D1 and is disposed on a setting surface 112 of the supporting member 11 located in the middle. The base 41 has two setting portions 411 that are respectively disposed on the setting surface 112 and located adjacent to two sides of the first direction D1 and are in a semicircular plate shape, and a connecting portion 412 that is connected between the two setting portions 411 and extends along the first direction D1 at an interval with the supporting member 11, an arc edge of the setting portion 411 faces the setting surface 112 of the supporting member 11, so that when the foldable supporting frame 10 is in a folded state, the setting surface 112 of the supporting member 11 can abut against the arc edge of the setting portion 411. The accommodating space 110c of each supporting housing 110 has an opening 110D facing the base 41 and allowing a connecting wire (not shown) between the electronic components to pass through, the cover plates 42 are slidably disposed through the openings 110D along the second direction D2, and the cover plates 42 are slidably pivoted to the setting portion 411 of the base 41 along a direction perpendicular to the first direction D1. Each cover plate 42 has a bottom plate portion 421 opposite to the installation surface 112, and two side plate portions 422 respectively extending from two side edges of the bottom plate portion 421 in the first direction D1 toward the installation surface 112 and abutting against the installation surface 112. The concentric pivot unit 2, the synchronous pivot unit 3, the connecting wires between the aforementioned electronic components, or other internal components (see fig. 4) can be covered by the base 41 and the cover plate 42 to optimize the visual aesthetics. In more detail, each setting portion 411 of the base 41 has two pivot sliding slots 411a facing the connecting portion 412 and respectively provided for the cover plate 42 to pivot correspondingly, the pivot sliding slots 411a are formed along the first direction D1 and extend along a direction perpendicular to the first direction D1 in abutment with the connecting portion 412, each cover plate 42 further has two pivot protruding posts 421a extending from the bottom plate portion 421 and respectively corresponding to the pivot sliding slots 411a protruding from the setting portion 411, when the foldable support stand 10 is switched between the unfolded state and the folded state and the cover plate 42 slides along the second direction D2 relative to the support housing 110, respectively, the bottom plate portion 421 of the cover plate 42 can slide close to the connecting portion 412, to more effectively cover the concentric pivot unit 2, the synchronous pivot unit 3, the connecting wires between the aforementioned electronic components, or other internal components. Although, in this embodiment, the hinge sliding slots 411a are respectively inclined from one side of the setting portion 411 away from the setting surface 112 and extend toward the setting surface 112 in opposite directions, and an included angle between the extending direction of the hinge sliding slots 411a and the second direction D2 is 45 degrees, the extending direction of the hinge sliding slots 411a and the included angle can be adjusted according to the moving track of the hinge post 421a of the cover plate 42, which is not limited in this embodiment.

Referring to fig. 3, 16 to 19, the torsion units 5 are disposed on the middle of the supporting member 11 and adjacent to the disposing portions 411 of the base 41, respectively. Each torsion unit 5 includes a third base 51 and two torsion bar members 52, wherein the third base 51 is formed by a plurality of stamping sheets, but not limited thereto. The third base 51 is disposed on the mounting surface 112 of the middle of the supporting member 11, one end of the torsion bar 52 is pivotally disposed on the third base 51 in a tight fit manner, and the other ends are pivotally disposed on the side plate 422 of the cover plate 42 respectively in a slidable manner along the second direction D2. Specifically, the third base 51 is formed with two pivot holes 511 respectively corresponding to the torque rods 52, each side plate portion 422 of each cover plate 42 is formed with a pivot sliding slot 422a extending toward the corresponding torque rod 52 and along the second direction D2, each torque rod 52 has a first protruding pillar 521 located at one end thereof and passing through the corresponding pivot hole 511 with tight interference, and a second protruding pillar 522 located at the other end thereof and passing through the corresponding pivot sliding slot 422a with relative sliding and rotation. When the foldable support frame 10 is switched between the unfolded state and the folded state, the cover plate 42 is driven by the support casing 110 to pivot relative to the setting portion 411 of the base 41, so as to drive the torsion bar 52 of the torsion unit 5 to pivot relative to the third base 51, since the first protruding pillar 521 of the torsion bar 52 is tightly inserted into the pivot hole 511 of the third base 51 in an interference manner, the connection between the two is that a torsion force preventing the torsion bar 52 from pivoting is generated when the torsion bar 52 pivots, and the torsion force is transmitted to the support casing 110 through the cover plate 42, so that the foldable support frame 10 can be positioned in any state between the unfolded state and the folded state steplessly. In other variations, the number of the torsion units 5 may be one, three or more, and is not limited thereto. In addition, in the embodiment, each third base 51 further forms a slit 512 communicating between the pivot holes 511, and the third base 51 is easily elastically deformed by the slit 512, so that the first convex pillar 521 of the torsion bar 52 can be easily installed in the pivot holes 511.

Referring to fig. 16 to 19, the positioning mechanisms 6 are respectively disposed on the supporting shell 110 in pairs, and the positioning mechanisms 6 respectively correspond to the side plates 422 of the cover plate 42. Each positioning mechanism 6 includes a fixing member 61 disposed on the corresponding setting surface 112 of the supporting housing 110, an engaging member 62 slidably disposed on the fixing member 61 along the first direction D1, and an elastic element 63 connected between the fixing member 61 and the engaging member 62, wherein the engaging member 62 and the elastic element 63 are disposed inside the fixing member 61, the engaging member 62 has an engaging portion 621 facing the corresponding side plate 422, and the engaging member 62 is pushed by the elastic element 63 to make the engaging portion 621 protrude from the fixing member 61. Each side plate portion 422 of each cover plate 42 is formed with a first engaging groove 422b and a second engaging groove 422c corresponding to the engaging portion 621 of the corresponding engaging member 62 toward the first direction D1, in the unfolded state, the engaging portion 621 of each engaging member 62 is correspondingly engaged with the corresponding first engaging groove 422b, in the folded state, the engaging portion 621 of each engaging member 62 is correspondingly engaged with the corresponding second engaging groove 422c, and between the unfolded state and the folded state, the engaging portion 621 of each engaging member 62 abuts against the portion of the side plate portion 422 of the corresponding cover plate 42 located between the first engaging groove 422b and the second engaging groove 422 c. Thereby enhancing the positioning and locking force of the foldable support frame 10 in the unfolded state and the folded state, so as to facilitate the operation of the user. It should be noted that, in a modified embodiment, the number of the positioning mechanisms 6 may be only two, and is not limited to this embodiment.

To sum up, the present invention discloses by locating a plurality of concentric pivot sets 21 between two adjacent support members 11 respectively, so that two adjacent support members 11 can be relatively pivoted by leaning on the first axis a1 of the neutral layer 20a of the flexible screen 20 as the axis, so as to prevent the flexible support frame 10 from being able to pull the flexible screen 20 when switching between the unfolded state and the folded state, thereby avoiding the flexible screen 20 from being damaged, and by means of the synchronous pivot mechanism 313 of the synchronous pivot set 31, the support members 11 located on two sides in the adjacent three support members 11 can be synchronously pivoted relative to the support member 11 located in the middle, so that the support members 11 can be synchronously pivoted.

The above description is only an example of the present invention, and the scope of the present invention should not be limited thereby, and all the simple equivalent changes and modifications made according to the claims and the description of the present invention are still within the scope of the present invention.

Claims

1. A bendable support frame is suitable for being arranged on a flexible screen; it is characterized in that the bendable support frame comprises:

the supporting unit comprises a plurality of supporting pieces which extend along a first direction and are arranged side by side in sequence, each supporting piece is provided with a supporting surface and a setting surface opposite to the supporting surface, and the supporting surfaces are arranged adjacently in sequence to be used for setting the flexible screen;

at least one concentric pivoting unit, including a plurality of concentric pivoting sets respectively disposed between two adjacent supporting members, each concentric pivoting set including a first pivoting member disposed on the installation surface of one of the supporting members and a second pivoting member disposed on the installation surface of the other of the supporting members, the first pivoting member having a first sliding rail formed in the first direction and in an arc shape, the second pivoting member having a second sliding block formed in the first direction and slidably protruding on the first sliding rail, the first sliding rail having a center of curvature farther from the installation surface than the supporting surface and biased against a neutral layer of the flexible screen in a thickness direction thereof, so that the two adjacent supporting members can pivot relatively with a first axis passing through the center of curvature and parallel to the first direction as an axis; and

at least one synchronous pivoting unit, which comprises a plurality of synchronous pivoting groups respectively arranged between three adjacent supporting pieces, each synchronous pivoting group comprises a first base arranged on the setting surface of the supporting piece in the middle, two second bases respectively arranged on the setting surfaces of the supporting pieces at two sides, and two synchronous pivoting mechanisms arranged on the first base and respectively arranged on the two second bases, each synchronous pivoting mechanism can be pivoted on the first base in a rotating way by taking a second axis parallel to the first direction as an axis center, and can be pivoted on the corresponding second base in a rotating way by taking a third axis parallel to the first direction as an axis center, the two synchronous pivoting mechanisms can be connected with each other in a relatively rolling way, so that the supporting pieces at two sides can be pivoted relative to the supporting piece in the middle synchronously,

the foldable support frame can be switched between an unfolded state and a folded state, when the foldable support frame is in the unfolded state, the support surfaces of the support members are arranged adjacently in sequence along a second direction perpendicular to the first direction and jointly form a support plane extending along the second direction, and when the foldable support frame is in the folded state, the support surfaces of the support members jointly form a support arc surface protruding outwards.

2. The foldable support stand of claim 1, wherein: the second pivoting member further has a second arc-shaped sliding rail formed in the first direction, the first pivoting member further has a first sliding block formed in the first direction and slidably and correspondingly protruding from the second sliding rail, and the first axis passes through the curvature center of the first sliding rail and the curvature center of the second sliding rail.

3. The foldable support stand of claim 2, wherein: the first sliding block is in a cylindrical shape corresponding to the second sliding rail, and the second sliding block is in a cylindrical shape corresponding to the first sliding rail.

4. The foldable support stand of claim 1, wherein: each synchronous pivoting mechanism is provided with a synchronous pivoting piece which can be rotatably pivoted on the first base along a second axis parallel to the first direction, and a sliding piece which is slidably connected with the synchronous pivoting piece and can be rotatably pivoted on the corresponding second base along a third axis parallel to the first direction, and the synchronous pivoting pieces of the two synchronous pivoting mechanisms can be relatively and rollably connected with each other.

5. The foldable support stand of claim 4, wherein: the contact surface between the two synchronous pivoting pieces is a toothed surface which is meshed with each other.

6. A bendable support according to any one of claims 1 to 5, wherein: the two ends of the support piece are respectively two support shell pieces, each support shell piece is provided with an accommodating space inside, and the arrangement surface of each support shell piece faces the accommodating space.

7. The foldable support stand of claim 6, wherein: still contain and cover the unit, it includes the base to cover the unit to and two apron, the base is followed first direction extends and locates be located person's in the middle face of setting up in the support piece, the base has and locates respectively the face of setting up is located two setting parts of neighbouring both sides department on the first direction to and connect between two setting parts and with support piece looks interval ground follows the connecting portion that first direction extends, and the accommodation space of each support shell spare has the orientation the opening of base, the apron can be followed respectively the second direction is slided to correspond to wear to locate the opening, just the apron can be followed the perpendicular to the direction of first direction is slided ground pivot and is located the setting part of base.

8. The foldable support stand of claim 7, wherein: each cover plate is provided with a bottom plate part opposite to the setting surface and two side plate parts extending from two side edges of the bottom plate part in the first direction to the setting surface respectively.

9. The foldable support stand of claim 8, wherein: each setting part of the base is provided with two pivoting chutes facing the connecting part and respectively used for the cover plates to be pivoted correspondingly, the pivoting chutes are formed along the first direction and extend along the direction vertical to the first direction in a manner of abutting against the connecting part, and each cover plate is also provided with two pivoting convex columns extending from the bottom plate part and respectively extending correspondingly to the pivoting chutes corresponding to the setting parts.

10. The foldable support stand of claim 8, wherein: still contain at least a torsion unit, the torsion unit includes the third base to and two torsion member, the third base is located be located the person's in the middle setting face in the support piece, wherein one end tight fit ground pivot of torsion member is located the third base, and the other end can be followed respectively the second direction is slided ground pivot and is located the curb plate portion of apron.

11. The foldable support stand of claim 10, wherein: the positioning mechanism comprises a fixing part arranged on the corresponding supporting shell part, clamping parts capable of being arranged on the fixing part in a sliding mode along the first direction, and elastic elements connected between the fixing part and the clamping parts, wherein at least one first clamping groove and at least one second clamping groove which are correspondingly matched with the corresponding clamping parts are formed in the side plate part of each cover plate towards the first direction, each clamping part is correspondingly clamped with the corresponding first clamping groove in the unfolded state, each clamping part is correspondingly clamped with the corresponding second clamping groove in the folded state, and each clamping part is abutted against the side plate part of the corresponding cover plate in the folded state.