CN110005695B

CN110005695B - Bendable support frame

Info

Publication number: CN110005695B
Application number: CN201910344066.5A
Authority: CN
Inventors: 徐安赐; 吴阳中; 许钰峰
Original assignee: Shenzhen Fushida Communication Co ltd; First Dome Corp
Current assignee: Shenzhen Fushida Communication Co ltd; First Dome Corp
Priority date: 2019-04-26
Filing date: 2019-04-26
Publication date: 2023-11-28
Anticipated expiration: 2039-04-26
Also published as: CN110005695A; TW202041126A; TWI693011B

Abstract

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

Description

Bendable support frame

Technical Field

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

Background

In recent years, the development of flexible screens has been mature, and the flexible screens are more and more often applied to general electronic products, but when designing products, the support frame or the housing for the flexible screen often cannot match the circumference change of the flexible screen when folding, so that the flexible screen is gradually damaged due to pulling during bending, and therefore, the design of the support frame or the housing is a serious problem.

Disclosure of Invention

An objective of the present invention is to provide a bendable supporting frame capable of improving at least one of the problems in the prior art.

In some embodiments, the foldable support frame of the present invention is suitable for being used for a flexible screen, and the foldable support frame includes a support unit, at least one concentric pivoting unit, and at least one synchronous pivoting unit. The support unit comprises a plurality of support pieces which extend along a first direction and are sequentially arranged side by side, each support piece is provided with a support surface and a setting surface opposite to the support surface, and the support surfaces are sequentially and adjacently arranged for setting the flexible screen. The concentric pivoting units comprise a plurality of concentric pivoting groups respectively arranged between two adjacent supporting pieces, each concentric pivoting group comprises a first pivoting piece arranged on the arrangement surface of one supporting piece and a second pivoting piece arranged on the arrangement surface of the other supporting piece, the first pivoting piece is provided with a first sliding rail which is formed towards the first direction and takes an arc shape, the second pivoting piece is provided with a second sliding block which is formed towards the first direction and correspondingly protrudes out of the first sliding rail in a sliding manner, and the curvature center of the first sliding rail is far away from the arrangement surface than the supporting surface and is biased against the neutral layer of the flexible screen in the thickness direction of the flexible screen, so that the two adjacent supporting pieces can pivot relatively 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 respectively arranged between three adjacent supporting pieces, each synchronous pivoting group comprises a first base arranged on the arrangement surface of the supporting piece in the middle, two second bases respectively arranged on the arrangement surfaces of the supporting pieces on 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, 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, and the two synchronous pivoting mechanisms can be connected with each other in a relatively rolling way so that the supporting pieces on two sides can synchronously pivot relative to the supporting piece in the middle. The bendable support frame can be switched between an unfolding state and a folding state, when the folding state is adopted, the support faces of the support pieces are sequentially and adjacently arranged along a second direction perpendicular to the first direction and jointly form a support plane extending along the second direction, and when the folding state is adopted, the support faces of the support pieces jointly form a support cambered surface protruding outwards.

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

In some aspects, the first slider is cylindrical corresponding to the second slide rail, and the second slider is cylindrical corresponding to the first slide rail.

In some embodiments, each of the synchro-pivot mechanisms has a synchro-pivot member rotatably pivoted to the first base along a second axis parallel to the first direction, and a slider slidably connected to the synchro-pivot member and rotatably pivoted to the corresponding second base along a third axis parallel to the first direction, the synchro-pivot members of the two synchro-pivot mechanisms being relatively rollably connected to each other.

In some embodiments, the interface between the two synchronized pivot members is a toothed surface that engages.

In some embodiments, the two supporting shells are respectively located at two ends of the supporting piece, each supporting shell is provided with an accommodating space located inside, and the setting surface of the supporting shell faces to the accommodating space.

In some embodiments, the cover unit further includes a cover unit, the cover unit includes a base, and two cover plates, the base extends along the first direction and is disposed on a setting surface of the support member located in the middle, the base has two setting portions respectively disposed on two adjacent sides of the setting surface in the first direction, and a connecting portion connected between the two setting portions and extending along the first direction at intervals from the support member, the accommodating space of each support case has an opening facing the base, the cover plates respectively slidably and correspondingly penetrate through the opening along the second direction, and the cover plates slidably pivot on the setting portions of the base along a direction perpendicular to the first direction.

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

In some embodiments, each setting portion of the base has two pivoting sliding grooves facing the connecting portion and respectively for the cover plates to pivot correspondingly, the pivoting sliding grooves are formed along the first direction and extend along a direction perpendicular to the first direction in abutment with the connecting portion, and each cover plate also has two pivoting posts extending from the bottom plate portion and respectively corresponding to the corresponding pivoting sliding grooves protruding from the setting portion.

In some embodiments, the torsion unit further includes at least one torsion unit, the torsion unit includes a third base, and two torsion bars, the third base is disposed on the setting surface of the support member located in the middle, one end of each torsion bar is pivoted on the third base in a tight fit manner, and the other end of each torsion bar is respectively pivoted on the side plate portion of the cover plate in a slidable manner along the second direction.

In some embodiments, the positioning mechanism further includes at least two positioning mechanisms, where each positioning mechanism is respectively disposed on the supporting shell and corresponds to the cover plate, each positioning mechanism includes a fixing member disposed on the corresponding supporting shell, a clamping member slidably disposed along the first direction and an elastic element connected between the fixing member and the clamping member, at least one first clamping groove and at least one second clamping groove corresponding to the corresponding clamping member are formed on a side plate portion of each cover plate toward the first direction, each clamping member is correspondingly clamped to the corresponding first clamping groove in the unfolded state, and each clamping member is correspondingly clamped to the corresponding second clamping groove in the folded state, and each clamping member abuts against the side plate portion of the corresponding cover plate in the folded state.

According to the invention, the plurality of concentric pivoting groups are respectively arranged between the two adjacent supporting pieces, so that the two adjacent supporting pieces can pivot relatively by taking the first axis leaning against the neutral layer of the flexible screen as the axis, the flexible screen is prevented from being pulled when the flexible support frame can be switched between the unfolding state and the folding state, the flexible screen is prevented from being damaged, and the supporting pieces positioned on two sides of the three adjacent supporting pieces can pivot synchronously relative to the supporting piece positioned in the middle by virtue of the synchronous pivoting mechanism of the synchronous pivoting groups, so that the supporting pieces can pivot synchronously.

Drawings

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

FIG. 1 is a perspective view of an embodiment of a flexible 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 concentric pivot group of the embodiment as it has not been pivoted relative to each other;

FIG. 8 is a cross-sectional view illustrating the concentric pivot group of the embodiment after relative pivoting;

fig. 9 is a perspective view illustrating a synchro-pivot group of the synchro-pivot unit of the embodiment;

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

FIG. 11 is a cross-sectional view illustrating the synchronous pivot set of the illustrated embodiment as it has not been pivoted relative to each other;

FIG. 12 is a cross-sectional view illustrating the synchronized pivot group of the embodiment after relative pivoting;

FIG. 13 is a cross-sectional view of the embodiment in an 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 synchronized pivot unit omitted; and

fig. 17 to 19 are a plurality of sectional views of the process of switching the embodiment from the unfolded state to the folded state, illustrating the cover unit, the torsion unit, and the positioning mechanism of the embodiment.

Detailed Description

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

Referring to fig. 1 to 4, an embodiment of a foldable support frame 10 of the present invention is suitable for being disposed on a flexible screen 20, wherein the foldable support frame 10 includes a support unit 1, three concentric pivoting units 2, two synchronous pivoting units 3, a cover 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, and the supporting members may be plastic members or metal members, for example. Each supporting member 11 has a supporting surface 111 and a setting surface 112 opposite to the supporting surface 111, and the supporting surfaces 111 are sequentially and adjacently arranged for setting the flexible screen 20. In the present embodiment, the two supporting members 11 are two supporting shells 110 extending along a second direction D2 perpendicular to the first direction D1, each supporting shell 110 has a first shell 110a and a second shell 110b assembled in a matching manner, and a receiving space 110c defined by the first shell 110a and the second shell 110b and located inside, and the receiving space 110c can accommodate a plurality of electronic components (not shown) and other related components (not shown) electrically connected to the flexible screen 20. The supporting surface 111 and the setting surface 112 of the supporting housing 110 are located on the first housing 110a, and the setting surface 112 of the supporting housing 110 faces the accommodating space 110c. 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 bottoms of the mounting grooves 113. It should be noted that, although the number of the supporting members 11 is seven in the present embodiment, the number of the supporting members 11 can be adjusted according to the requirement, which 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 groups 21 respectively disposed between two adjacent supporting members 11. Each concentric pivot group 21 comprises a first pivot 211 provided on the setting surface 112 of one of the support members 11, and a second pivot 212 provided on the setting surface 112 of the other support member 11. The first pivot 211 and the second pivot 212 may be metal pieces, for example. The first pivot member 211 has a first sliding rail 211a formed in an arc shape toward the first direction D1, the second pivot member 212 has a second sliding block 212a formed in the first direction D1 and slidably protruding from the first sliding rail 211a correspondingly, and a center of curvature of the first sliding rail 211a is farther from the setting surface 112 than the supporting surface 111 and is biased against the neutral layer 20a of the flexible screen 20 in a thickness direction thereof, so that two adjacent supporting members 11 can pivot relatively about a first axis A1 passing through the center of curvature and parallel to the first direction D1. In detail, in the present embodiment, the center of curvature of the first sliding rail 211a and the first axis A1 overlap with the neutral layer 20a, but in a variant embodiment, the center of curvature of the first sliding rail 211a and the first axis A1 are biased against the neutral layer 20a but do not overlap with the neutral layer 20a, that is, the positions of the center of curvature of the first sliding rail 211a and the first axis A1 may be slightly adjusted according to design requirements, which is not limited to the present embodiment. In this embodiment, the second pivot member 212 further has a second sliding rail 212b formed in an arc shape toward the first direction D1, the first pivot member 211 further has a first sliding block 211b formed in the first direction D1 and slidably protruding from the second sliding rail 212b correspondingly, and the first axis A1 passes through the center of curvature of the first sliding rail 211a and the center of curvature of the second sliding rail 212 b. And the first sliding block 211b has a cylindrical shape corresponding to the second sliding rail 212b, and the second sliding block 212a has a cylindrical shape corresponding to the first sliding rail 211 a. Moreover, the first pivot 211 and the second pivot 212 are both composed of a plurality of stamping sheets, and the first slider 211b and the second slider 212a are in the form of shaft members and are penetratingly disposed on the first pivot 211 and the second pivot 212, so that the first pivot 211 and the second pivot 212 made of the stamping sheets have high precision and can save production cost, but are not limited thereto. It should be noted that, in a variant embodiment, the second sliding rail 212b and the first sliding rail 211b may be omitted, and in this variant embodiment, the structure of the second sliding rail 212a corresponds to that of the first sliding rail 211a, that is, the shape of the second sliding rail 212a needs to be matched with the concave-convex shape of the first sliding rail 211a to prevent the second sliding rail 212a from relatively rotating when sliding in the first sliding rail 211 a.

Referring to fig. 4 and 9 to 12, the synchronous pivoting units 3 are disposed at intervals along the first direction D1 between the supporting members 11 and the adjacent concentric pivoting units 2, and two wire passing spaces S are formed between the synchronous pivoting units 3 and the concentric pivoting units 2 in the middle for passing through connection wires (not shown) between the electronic components, but the arrangement modes of the concentric pivoting units 2 and the synchronous pivoting units 3 may be changed according to the requirement. In addition, although the number of concentric pivoting units 2 is three and the number of synchronous pivoting units 3 is two in the present embodiment, the number of the concentric pivoting units 2 is at least one and the number of the concentric pivoting units can be adjusted according to the requirement, which is not limited to the present embodiment. Each synchronous pivoting unit 3 comprises a plurality of synchronous pivoting groups 31 respectively arranged between the adjacent three supporting pieces 11, each synchronous pivoting group 31 comprises a first base 311 arranged on the arrangement surface 112 of the supporting piece 11 positioned in the middle, two second bases 312 respectively arranged on the arrangement surfaces 112 of the supporting pieces 11 positioned at two sides, and two synchronous pivoting mechanisms 313 arranged on the first base 311 and respectively arranged on the two second bases 312, wherein each synchronous pivoting mechanism 313 can be pivoted on the first base 311 in a rotating way by taking a second axis A2 parallel to the first direction D1 as an axis, and can be pivoted on the corresponding second base 312 in a rotating way by taking a third axis A3 parallel to the first direction D1 as an axis, and the two synchronous pivoting mechanisms 313 can be connected with each other in a relatively rolling way so as to enable the supporting pieces 11 positioned at two sides to synchronously pivot relative to the supporting piece 11 positioned in the middle. In detail, each synchronous pivoting mechanism 313 has a synchronous pivoting member 314 rotatably pivoted to the first base 311 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 rotatably pivoted to the corresponding second base 312 along a third axis A3 parallel to the first direction D1. The synchronizing pivot pieces 314 of the two synchronizing pivot mechanisms 313 are rollably connected to each other, and the contact surface between the two synchronizing pivot pieces 314 is a toothed surface 314a that is engaged. In this embodiment, the synchronous pivot 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, thereby relatively slidably interconnecting the synchronous pivot 314 and the sliding member 315. In a variation, the sliding groove 314b is formed on the sliding member 315, and the protrusion 315a is formed on the synchronous pivot 314. Each synchronous pivot assembly 31 further includes a plurality of shaft members 316 passing through between the first base 311 and the synchronous pivot member 314, and between the second base 312 and the sliding member 315, so that the above members can be relatively pivotally connected to each other, but not limited thereto. The synchronous pivoting unit 3 has small space occupation ratio and simple and reliable structure. Furthermore, it should be noted that, as in the present embodiment, the concentric pivoting unit 2 and the synchronous pivoting unit 3 may be disposed through the supporting member 11 and fixed by, for example, welding or gluing, and in a variant embodiment, may be fixed to the supporting member 11 by a screw locking method or other fixing methods.

Referring to fig. 4, 13-15, the foldable support frame 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. 13-15). In the unfolded state, the supporting surfaces 111 of the supporting members 11 are arranged adjacently in sequence along the second direction D2 and together form a supporting plane extending along the second direction D2, in the folded state, the supporting surfaces 111 of the supporting members 11 together form a supporting cambered surface protruding outwards, and in the folded state, the supporting shell members 110 are mutually abutted in parallel. Referring to fig. 8 and 12, by means of the concentric pivot groups 21 respectively disposed between the two adjacent support members 11, the two adjacent support members 11 can pivot relatively about 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 when the flexible support frame 10 is switched between the unfolded state and the folded state, so as to avoid the flexible screen 20 from being damaged, and by means of the synchronous pivot mechanism 313 of the synchronous pivot group 31, the support members 11 located on two sides of the three adjacent support members 11 can pivot synchronously with respect to the support member 11 located in the middle, so that the support 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 planar, so that the supporting arc surface formed by the supporting surfaces 111 of the supporting members 11 in the folded state is substantially formed by a plurality of planar surfaces, but in a variant embodiment, the supporting surfaces 111 of the supporting members 11 may be arc surfaces, which should not be limited to the present embodiment.

Referring to fig. 3 and 16-19, the cover 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 middle disposition surface 112 of the supporting member 11. The base 41 has two semicircular plate-shaped setting portions 411 respectively disposed on two adjacent sides of the setting surface 112 in the first direction D1, and a connecting portion 412 connected between the two setting portions 411 and extending along the first direction D1 at intervals from the supporting member 11, wherein an arc edge of the setting portion 411 faces the setting surface 112 of the supporting member 11, so that the setting surface 112 of the supporting member 11 can abut against the arc edge of the setting portion 411 when the foldable supporting frame 10 is in the folded state. The accommodating space 110c of each supporting housing 110 has an opening 110D facing the base 41 and through which a connection wire (not shown) between the electronic components passes, the cover 42 is slidably disposed in the second direction D2 and correspondingly passes through the opening 110D, and the cover 42 is 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 setting surface 112, and two side plate portions 422 extending from both side edges of the bottom plate portion 421 in the first direction D1 toward the setting surface 112 and abutting against the setting surface 112, respectively. The base 41 and the cover 42 can cover the concentric pivoting unit 2, the synchronous pivoting unit 3, the connecting wires between the electronic components or other internal components (see fig. 4) to optimize visual aesthetic feeling. In more detail, each setting portion 411 of the base 41 has two pivoting sliding grooves 411a facing the connecting portion 412 and respectively pivoted to the cover plates 42, the pivoting sliding grooves 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 pivoting protrusions 421a extending from the bottom plate portion 421 and respectively corresponding to the corresponding pivoting sliding grooves 411a of the setting portion 411, and when the foldable support frame 10 is converted between the unfolded state and the folded state by the pivoting sliding grooves 411a extending in abutment with the connecting portion 412 and the cover plates 42 are respectively slid along the second direction D2 relative to the support housing 110, the bottom plate portion 421 of the cover plates 42 can slide closely against the connecting portion 412 adjacent to the end edges of the connecting portion 412 to more effectively cover the connection wire or other inner members between the concentric pivoting unit 2, the synchronous pivoting unit 3, and the front electronic pivoting element. Although in the present embodiment, the pivoting sliding grooves 411a are respectively inclined from the 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 pivoting sliding grooves 411a and the second direction D2 is 45 degrees, the extending direction of the pivoting sliding grooves 411a and the included angle can be adjusted according to the movement track of the pivoting protruding columns 421a of the cover plate 42, which is not limited by the present embodiment.

Referring to fig. 3 and 16-19, the torsion unit 5 is disposed in the middle of the supporting member 11 and adjacent to the disposition portions 411 of the base 41, respectively. Each torsion unit 5 includes a third base 51 and two torsion bars 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 middle disposition surface 112 of the supporting member 11, one end of the torsion bar 52 is pivoted on the third base 51 in a tight fit manner, and the other end is respectively pivoted on the side plate portion 422 of the cover plate 42 in a slidable manner along the second direction D2. In detail, the third base 51 is formed with two pivot holes 511 respectively corresponding to the torsion bar 52, each side plate 422 of each cover 42 is formed with a pivot sliding slot 422a extending along the second direction D2 towards the corresponding torsion bar 52, each torsion bar 52 has a first boss 521 at one end and passing through the corresponding pivot hole 511 with tight interference, and a second boss 522 at the other end 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 shell 110 to pivot relative to the setting portion 411 of the base 41, so as to further drive the torsion bar 52 of the torsion unit 5 to pivot relative to the third base 51, and since the first boss 521 of the torsion bar 52 is tightly and interferometrically inserted into the pivot hole 511 of the third base 51, 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 shell 110 via the cover plate 42 respectively, so that the foldable support frame 10 can be positioned in any state between the unfolded state and the folded state without any section. In other variant embodiments, the number of torsion units 5 may be one or more than three, and is not limited thereto. In addition, in the present embodiment, each third base 51 is further formed with a slit 512 communicating between the pivot holes 511, and the third base 51 is easier to elastically deform by the slit 512, so that the first boss 521 of the torsion bar 52 can be easily mounted in the pivot hole 511.

Referring to fig. 16 to 19, the positioning mechanisms 6 are disposed in groups on the supporting shell 110, and the positioning mechanisms 6 correspond to the side plate portions 422 of the cover 42. Each positioning mechanism 6 includes a fixing member 61 disposed on the disposition surface 112 of the corresponding supporting shell member 110, an engaging member 62 slidably disposed on the fixing member 61 along the first direction D1, and an elastic member 63 connected between the fixing member 61 and the engaging member 62, wherein the engaging member 62 and the elastic member 63 are disposed inside the fixing member 61, and the engaging member 62 has an engaging portion 621 facing the corresponding side plate portion 422, and the engaging member 62 is pushed by the elastic member 63 such that the engaging portion 621 protrudes 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, and in the unfolded state, the engaging portion 621 of each engaging member 62 is correspondingly engaged with the corresponding first engaging groove 422b, and in the folded state, the engaging portion 621 of each engaging member 62 is correspondingly engaged with the corresponding second engaging groove 422c, and in the unfolded state and the folded state, the engaging portion 621 of each engaging member 62 abuts against a 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 locking force of the foldable support frame 10 in the unfolded state and the folded state, so as to facilitate the operation of a user. It should be noted that, in a variant embodiment, the number of the positioning mechanisms 6 may be only two, which is not limited to the present embodiment.

In summary, the present invention uses the plurality of concentric pivoting groups 21 respectively disposed between the two adjacent supporting members 11 to enable the two adjacent supporting members 11 to pivot relatively about 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 when the foldable support frame 10 is switched between the unfolded state and the folded state, thereby avoiding the flexible screen 20 from being damaged, and uses the synchronous pivoting mechanism 313 of the synchronous pivoting group 31 to enable the supporting members 11 located on two sides of the three adjacent supporting members 11 to pivot synchronously with respect to the supporting member 11 located in the middle, thereby enabling the supporting members 11 to pivot synchronously.

The foregoing is merely illustrative of the present invention and is not intended to limit the scope of the invention, which is defined by the appended claims and their equivalents.

Claims

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

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

the at least one concentric pivoting unit comprises a plurality of concentric pivoting groups respectively arranged between two adjacent supporting pieces, each concentric pivoting group comprises a first pivoting piece arranged on the arrangement surface of one supporting piece and a second pivoting piece arranged on the arrangement surface of the other supporting piece, the first pivoting piece is provided with a first sliding rail which is formed towards the first direction and takes an arc shape, the second pivoting piece is provided with a second sliding block which is formed towards the first direction and correspondingly protrudes from the first sliding rail in a sliding manner, and the curvature center of the first sliding rail is far away from the arrangement surface than the supporting surface and is biased against the neutral layer of the flexible screen in the thickness direction of the flexible screen, so that the two adjacent supporting pieces can pivot relatively by taking a first axis which passes through the curvature center and is parallel to the first direction as an axis; and

at least one synchronous pivoting unit comprising a plurality of synchronous pivoting groups respectively arranged between three adjacent supporting pieces, wherein each synchronous pivoting group comprises a first base arranged on the arrangement surface of the supporting piece in the middle, two second bases respectively arranged on the arrangement surfaces of the supporting pieces on 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, 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, the two synchronous pivoting mechanisms can be connected with each other in a relatively rolling way, so that the supporting pieces on two sides can synchronously pivot relative to the supporting piece in the middle,

the bendable support frame can be switched between an unfolding state and a folding state, when the folding state is adopted, the support faces of the support pieces are sequentially and adjacently arranged along a second direction perpendicular to the first direction and jointly form a support plane extending along the second direction, and when the folding state is adopted, the support faces of the support pieces jointly form a support cambered surface protruding outwards.

2. The flexible support of claim 1 wherein: the second pivoting piece is further provided with a second sliding rail which is formed towards the first direction and is arc-shaped, the first pivoting piece is further provided with a first sliding block which is formed towards the first direction and correspondingly protrudes out of the second sliding rail in a sliding manner, 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 flexible support of claim 2 wherein: the first sliding block is cylindrical corresponding to the second sliding rail, and the second sliding block is cylindrical corresponding to the first sliding rail.

4. The flexible support of claim 1 wherein: each synchronous pivot mechanism is provided with a synchronous pivot piece which can be 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 pivot piece and can be pivoted on the corresponding second base along a third axis parallel to the first direction, wherein the synchronous pivot pieces of the two synchronous pivot mechanisms can be connected with each other in a relatively rolling way.

5. The flexible support of claim 4 wherein: the contact surface between the two synchronous pivoting members is a toothed surface which is engaged.

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

7. The flexible support of claim 6 wherein: the cover unit comprises a base and two cover plates, wherein the base extends along the first direction and is arranged on the setting surface of the support piece, which is positioned in the middle of the support piece, the base is provided with two setting parts which are respectively arranged on two adjacent sides of the setting surface in the first direction, and a connecting part which is connected between the two setting parts and extends along the first direction at intervals with the support piece, the accommodating space of each support shell piece is provided with an opening facing the base, the cover plates can correspondingly penetrate through the openings in a sliding manner along the second direction, and the cover plates can be pivoted on the setting parts of the base in a sliding manner along the direction perpendicular to the first direction.

8. The flexible support of claim 7 wherein: each cover plate has a bottom plate portion opposed to the disposition surface, and two side plate portions extending toward the disposition surface from both side edges of the bottom plate portion in the first direction, respectively.

9. The flexible support of claim 8 wherein: each setting part of the base is provided with two pivoting sliding grooves which face the connecting part and are respectively used for the corresponding pivoting of the cover plates, the pivoting sliding grooves are formed along the first direction and extend along the direction perpendicular to the first direction in a way of abutting against the connecting part, and each cover plate is also provided with two pivoting convex columns which extend from the bottom plate part and respectively correspond to the corresponding pivoting sliding grooves of the setting parts.

10. The flexible support of claim 8 wherein: the torsion unit comprises a third base and two torsion bars, wherein the third base is arranged on the setting surface of the support piece, the setting surface is positioned in the middle of the support piece, one end of each torsion bar is pivoted on the third base in a tight fit manner, and the other end of each torsion bar is pivoted on the side plate part of the cover plate in a sliding manner along the second direction.

11. The flexible support of claim 10 wherein: the positioning mechanism comprises a fixing piece arranged on the corresponding supporting shell piece, a clamping piece slidably arranged on the fixing piece along the first direction, and an elastic element connected between the fixing piece and the clamping piece, wherein at least one first clamping groove and at least one second clamping groove which are correspondingly matched with the corresponding clamping piece are formed on the side plate part of each cover plate towards the first direction, each clamping piece is correspondingly clamped in the corresponding first clamping groove in the unfolding state, each clamping piece is correspondingly clamped in the corresponding second clamping groove in the folding state, and each clamping piece is propped against the side plate part of the corresponding cover plate in the unfolding state.