Rotating shaft structure

Abstract

The utility model relates to a rotating shaft structure which comprises a seat body, two sides of the seat body are respectively connected with a first linkage mechanism and a second linkage mechanism, and the first linkage mechanism and the second linkage mechanism are respectively connected with two half parts of a screen so that the screen can be bent relatively. The first linkage mechanism comprises a first rotating piece, and a first tooth row of the first rotating piece is in tooth connection with a first arc-shaped tooth portion of the base body. The second rotating piece is connected with a first shell, and the second rotating piece is connected with the first rotating piece so as to move relatively; one end of a third rotating piece is connected with the second rotating piece for relative sliding, and the other end of the third rotating piece is connected with a first rotating shaft for synchronous rotation; therefore, the first rotating piece and the third rotating piece rotate simultaneously.

Description

Technical Field

[0001] The utility model relates to a hinge, in particular to a rotating shaft structure of a foldable electronic device. Background Art

[0002] In existing "folding devices", different hinge structure designs are required depending on whether the device is folded inward or outward and the curvature of the curved portion, in order to avoid hindering the folding action of the screen and causing pulling. The opening and closing actions of the folding device with an inward-folding screen mainly follow the traditional folding device. After folding, the screen can be protected inside, and it is closer to user habits and easier to accept. However, in such products, the structural design of the hinge structure will be limited by the type of screen used, and it is also necessary to consider that the curved portion of the screen after folding inward will present a teardrop shape, a horseshoe shape, or a dual hard screen folding structure, which will form a difference. Among them, the components that need to be considered and the connection relationship and action between them are all key factors affecting whether the screen is easy to be damaged and its service life.

[0003] Regarding the above-mentioned rotating shaft structure, as shown in the patent publication numbers CN110630625B, CN109469680B, CN109654113B and CN209959699U, various structural designs are mainly tried to achieve both thinness and overall aesthetics. However, considering the existing manufacturing process and cost, in order to achieve the effect of thinness, the effect of providing displacement compensation through a virtual rotation center when the hinge structure is folded is better, such as the "flexible screen hinge structure" with patent publication number CN219345251U, which mainly pivots two hinge modules at two arc-shaped parts of the base, and the two ends of a shell connecting rod of any hinge module respectively have a protrusion and a limit part; a connecting plate is located at the top of the protrusion and pivoted to the shell connecting rod, and the connecting plate is connected to the shell connecting rod through a tension spring, or through at least one bending sheet to correspond to at least one limit plate of an arc-shaped swing arm; the arc-shaped swing arm has a guide part connected to the arc-shaped part, and the arc-shaped swing arm is pivoted to the protrusion of the shell connecting rod; one end of a gear connecting rod is connected to at least one shaft rod, and the sliding part at the other end of the gear connecting rod is coaxially sleeved with a guide column with the limit part.

[0004] However, the solution of patent publication number CN219345251U mainly connects the two arc-shaped parts of the base through two guide parts, so as to allow the two arc-shaped swing arms to swing in an arc shape relative to each other on the base. In actual production, the combination of the "arc-shaped guide part" and the "arc-shaped part" is not only difficult to manufacture separately, which increases the production cost, but also easily causes looseness, instability or unsmoothness due to manufacturing tolerance when combined. Utility Model Content

[0005] In view of this, in order to provide a structure different from the prior art and improve the above-mentioned shortcomings, the inventor has accumulated many years of experience and continuous research and development and improvement, thus resulting in the production of the present utility model.

[0006] One purpose of the utility model is to provide a shaft structure that can solve the production difficulties and the problems of looseness, instability or unsmoothness of the base and the arc-shaped swing arm of the existing shaft structure using an "arc-shaped guide part" and an "arc-shaped part". The utility model can facilitate manufacturing and assembly through the first arc-shaped tooth part of the base body to connect the first tooth row of the first rotating member, and through a similar four-bar structure composed of the base body, the first shaft, the first rotating member, the second rotating member and the third rotating member, thereby reducing production costs and helping to reduce the overall thickness, making the overall thinner. In the process of overall folding, a stable transmission effect can be formed, and when the whole is bent, an accommodating space can be made to accommodate the middle curved part of the screen.

[0007] In order to achieve the purpose of the above-mentioned utility model, the rotating shaft structure provided in the utility model mainly includes a base, a first linkage mechanism and a second linkage mechanism, the first linkage mechanism and the second linkage mechanism are respectively connected to the two sides of the base, and the first linkage mechanism and the second linkage mechanism are respectively connected to the two halves of a screen, so that the screen can be bent relative to each other; its main technical characteristics are: one end of the base has a first arc-shaped tooth portion; and the first linkage mechanism includes a first rotating member, a second rotating member and a third rotating member, wherein one end of the first rotating member has a first tooth row, the first tooth row is toothed in the first arc-shaped tooth portion for rotating the first rotating member; one side of the second rotating member is connected to the other end of the first rotating member in a relatively movable manner; one end of the third rotating member is connected to the second rotating member in a relatively movable manner, and the other end of the third rotating member is connected to a first rotating shaft in a synchronously rotating manner, and the first rotating shaft is pivotally arranged on the base; so that the third rotating member and the first rotating member rotate simultaneously.

[0008] During implementation, the first rotating member includes a vertical plate portion, one end of the vertical plate in the longitudinal direction has a plurality of teeth arranged in a straight line, the plurality of teeth arranged in a straight line serve as a first tooth row, the first arc-shaped tooth portion is fixedly disposed at one end of the seat body, the first tooth row is connected to the first arc-shaped tooth portion, so that the first rotating member can rotate relative to one side of the seat body.

[0009] During implementation, one side of the seat body has a first side plate, and the other side of the seat body has a second side plate, and an elongated positioning groove is provided between the end of the first side plate and the end of the second side plate, one end of the first arc-shaped tooth portion is arranged below the horizontal plane of the slot of the elongated positioning groove, and the other end of the first arc-shaped tooth portion is arranged above the horizontal plane of the slot of the elongated positioning groove.

[0010] During implementation, the utility model also includes a positioning plate, and a first guide rail and a third guide rail are provided on the plate surface of the positioning plate; the first rotating member has a first moving part, and the first moving part is connected to the first guide rail in a relative movement manner; the third rotating member has a third moving part, and the third moving part is connected to the third guide rail in a relative movement manner.

[0011] During implementation, the other end of the first rotating member has a horizontal plate portion, one end of the third rotating member has a second movable portion, the second rotating member has a second guide rail, the second guide rail connects the horizontal plate portion and the second movable portion, allowing the first rotating member and the third rotating member to slide relative to the second rotating member.

[0012] During implementation, the utility model also includes a swinging member, one end of the swinging member has an arc-shaped guide portion, one side of the second rotating member has an arc-shaped portion, the arc-shaped portion is connected to the arc-shaped guide portion, so that the swinging member and the second rotating member can swing relative to each other, the other end of the swinging member has an adapter plate, and the adapter plate is connected to a support plate; one side of the seat body has a first side plate, the other side of the seat body has a second side plate, a first elongated guide groove is provided between the middle part of the first side plate and the middle part of the second side plate, a plate surface in the middle part of the support plate slides against one end of the first side plate, and one end in the middle part of the support plate is slidably connected to the first elongated guide groove.

[0013] During implementation, one end of the swinging member has a first hook connected to one end of an elastic member; one side of the second rotating member has a second hook connected to the other end of the elastic member, so that the swinging member can be connected to the second rotating member in an elastic swinging manner.

[0014] During implementation, the other end of the first rotating member has a limiting portion, and one end of the swinging member has a positioning portion, and the positioning portion is connected to the limiting portion in a relatively movable manner.

[0015] During implementation, one side of the seat body has a first side plate, the other side of the seat body has a second side plate, and an elongated positioning groove is provided between the end of the first side plate and the end of the second side plate; one end of the third rotating member has a second movable portion, the second movable portion is connected to the second rotating member in a relatively sliding manner, and the other end of the third rotating member has a first positioning hole, and the first positioning hole is connected to the first rotating shaft in a synchronously rotating manner; a recessed portion is provided between the second movable portion and the first positioning hole, the recessed portion bridges the first side plate, so that the other end of the third rotating member is limited in the elongated positioning groove.

[0016] During implementation, one end of the seat body has a second arc-shaped tooth portion, and the first arc-shaped tooth portion and the second arc-shaped tooth portion are arranged in opposite directions on both sides of the seat body; the second linkage mechanism and the first linkage mechanism have corresponding structures, and the second linkage mechanism has a second rotating shaft and a second tooth row, the first rotating shaft and the second rotating shaft are parallel and juxtaposed, and the second tooth row is connected to the second arc-shaped tooth portion.

[0017] During implementation, the utility model also includes a support seat, a co-moving component and a first positioning member, wherein the support seat positions the co-moving component, the first rotating shaft and the second rotating shaft pass through the support seat, the co-moving component and the first positioning member in sequence, and are respectively locked to the first rotating shaft and the second rotating shaft by a first end seal and a second end seal to fix and compress the first positioning member and allow the first rotating shaft and the second rotating shaft to rotate in opposite directions, and the seat body also includes a middle plate, which abuts the support seat and fixes the co-moving component and the first positioning member on the seat body.

[0018] During implementation, the utility model further includes an elongated linkage plate, an elongated limiting plate, a third toothed member and a fourth toothed member, wherein one side surface of the elongated linkage plate presses against at least one second positioning member, and the elongated limiting plate is arranged in parallel with the other side of the elongated linkage plate; a first toothed member is coaxially arranged on the first rotating shaft, and the two ends of the first rotating shaft are respectively positioned on the elongated linkage plate and the elongated limiting plate in a rotational manner; a second toothed member is coaxially arranged on the second rotating shaft, and the two ends of the second rotating shaft are respectively positioned on the elongated linkage plate in a rotational manner and the elongated limiting plate; one end of the third toothed member is positioned on the other side of the elongated linkage plate, and the third toothed member is geared to the first toothed member in a relatively movable manner; the fourth toothed member is parallel to the third toothed member, one end of the fourth toothed member is positioned on the other side of the elongated linkage plate, and the fourth toothed member is geared to the second toothed member in a relatively movable manner, so that when the first rotating shaft and the second rotating shaft rotate in opposite directions relative to each other, the third toothed member, the fourth toothed member and the elongated linkage plate can move synchronously, and the elongated linkage plate can push at least one second positioning member.

[0019] During implementation, the second linkage mechanism includes a first rotating rod, a second rotating rod and a third rotating rod, wherein one end of the first rotating rod has a second tooth row, and the second tooth row is connected to the second arc-shaped tooth portion for rotating the first rotating rod; the second rotating member is connected to a first shell, the second rotating rod is connected to a second shell, one side of the second rotating rod is connected to the other end of the first rotating rod in a relatively movable manner, and one end of the second rotating rod has a second supporting portion; one end of the third rotating rod is connected to the second rotating rod in a relatively sliding manner, and the other end of the third rotating rod is connected to the second rotating shaft in a synchronously rotating manner, so that the third rotating rod and the first rotating rod can rotate simultaneously.

[0020] In order to further understand the present invention, the following preferred embodiments are given, and the specific components and effects of the present invention are described in detail with reference to the accompanying drawings and reference numerals: BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0022] Figure 1 This is a three-dimensional schematic diagram of the preferred embodiment of the present invention when the first shell and the second shell are connected;

[0023] Figure 2 It is an exploded view of some components of a preferred embodiment of the utility model;

[0024] Figure 3 It is an exploded view of components of a preferred embodiment of the utility model;

[0025] Figure 4 It is an exploded view of some components of a preferred embodiment of the utility model;

[0026] Figure 5 It is a partial three-dimensional appearance schematic diagram of a preferred embodiment of the utility model;

[0027] Figure 6 A partial three-dimensional schematic diagram of the appearance of another preferred embodiment of the utility model from another perspective;

[0028] Figure 7 It is a top view of a preferred embodiment of the utility model when flattened;

[0029] Figure 8 for Figure 7 A-A' section diagram;

[0030] Fig. 9 for Figure 7 B-B' section diagram;

[0031] Fig.10 It is a cross-sectional view of the preferred embodiment of the utility model during the bending process along the line A-A';

[0032] Fig.11 It is a BB' cross-sectional view of a preferred embodiment of the utility model during the bending process;

[0033] Fig.12 It is a BB' cross-sectional view of a preferred embodiment of the utility model after bending;

[0034] Fig.13 This is a schematic diagram of the three-dimensional appearance of a preferred embodiment of the utility model after bending;

[0035] Fig.14 This is a schematic diagram of the use state of the two support plates after the first shell and the second shell of the utility model are bent;

[0036] Fig.15 It is a schematic diagram of the use state of two support plates during the flattening process of the first shell and the second shell of the utility model;

[0037] Fig.16 This is a schematic diagram of the use status of two support plates in the process of continuing to flatten the first shell and the second shell of the utility model;

[0038] Fig.17 This is a schematic diagram of the use status of the two support plates after the first shell and the second shell of the utility model are flattened;

[0039] Fig.18 It is a three-dimensional appearance schematic diagram of another implementation state of some components of the utility model;

[0040] Fig.19 for Fig.18 C-C' cross-section diagram.

[0041] Description of Reference Numerals

[0042] 1: Rotating shaft structure;

[0043] 2: base body;

[0044] 21: first side panel;

[0045] 22: second side panel;

[0046] 23: Long positioning groove;

[0047] 24: first arc-shaped tooth portion;

[0048] 25: second arc-shaped tooth portion;

[0049] 26: middle plate;

[0050] 27: First gap;

[0051] 28: second gap;

[0052] 291: first elongated guide groove;

[0053] 292: second elongated guide groove;

[0054] 3: The first linkage mechanism;

[0055] 31: first rotating member;

[0056] 311: Vertical board part;

[0057] 312: horizontal plate;

[0058] 313: first tooth row;

[0059] 314, 314': limiting part;

[0060] 315: first moving part;

[0061] 32: second rotating member;

[0062] 321: arc portion;

[0063] 322: second hook;

[0064] 323: first protrusion;

[0065] 324: second guide rail;

[0066] 325: first bump;

[0067] 326: second protrusion;

[0068] 33,33': swinging member;

[0069] 331,331': adapter plate;

[0070] 332: curved plate;

[0071] 333: arc-shaped guide portion;

[0072] 334, 334': positioning part;

[0073] 335: first hook;

[0074] 336, 336': elastic member;

[0075] 34: third rotating member;

[0076] 341: second moving part;

[0077] 342: first positioning hole;

[0078] 343: first rotating shaft;

[0079] 344: recessed portion;

[0080] 345,433: plane part;

[0081] 346: third moving part;

[0082] 347,348: long ribs;

[0083] 36: positioning plate;

[0084] 361: first side;

[0085] 362: second side;

[0086] 363: second pivot hole;

[0087] 364: first guide rail;

[0088] 365: the third rail;

[0089] 366,367: long guide groove;

[0090] 4: second linkage mechanism;

[0091] 41: first rotating rod;

[0092] 411: second tooth row;

[0093] 42: second rotating rod;

[0094] 421: second supporting portion;

[0095] 43: third rotating rod;

[0096] 431: second positioning hole;

[0097] 432: second rotating shaft;

[0098] 5: Same moving components;

[0099] 51: support seat;

[0100] 52: first positioning member;

[0101] 53: first gear;

[0102] 54: intermediate gear set;

[0103] 55: second gear;

[0104] 56: first end seal;

[0105] 57: second end seal;

[0106] 6: Long linkage plate;

[0107] 61: long limiting plate;

[0108] 62: third toothed member;

[0109] 63: fourth toothed member;

[0110] 64: second positioning member;

[0111] 65: first toothed member;

[0112] 66: second toothed member;

[0113] 91: first shell;

[0114] 92: second housing;

[0115] 93: screen;

[0116] 94: Accommodation space;

[0117] 95,95': Support plate. DETAILED DESCRIPTION

[0118] See also Figure 1As shown, the rotating shaft structure 1 of the utility model mainly includes a seat body 2, a first linkage mechanism 3 and a second linkage mechanism 4, wherein the first linkage mechanism 3 and the second linkage mechanism 4 are respectively connected to the two sides of the seat body 2, and one end of the first linkage mechanism 3 and the second linkage mechanism 4 respectively corresponds to the two halves of a screen 93, and the other ends of the first linkage mechanism 3 and the second linkage mechanism 4 are respectively connected to a first shell 91 and a second shell 92, so as to link the first shell 91 and the second shell 92, so that the first shell 91 and the second shell 92 are relatively turned over, thereby enabling the screen 93 to be relatively turned over, folded or flattened, and when the whole is bent, it can be as shown Fig.12 As shown, an accommodation space 94 is provided at the junction of the first shell 91 and the second shell 92 to accommodate the curved portion in the middle of the screen 93 .

[0119] like Figure 2~Figure 9 As shown, a preferred embodiment of the rotating shaft structure 1 of the utility model includes a seat body 2, a first linkage mechanism 3, a second linkage mechanism 4, a co-acting component 5, a support seat 51 and a first positioning member 52, wherein the seat body 2 is an elongated shell with an open top surface, and when flattened, the seat body 2 is located between the first shell body 91 and the second shell body 92; one side of the seat body 2 has a first side plate 21, and the other side of the seat body 2 has a second side plate 22, the first side plate 21 and the second side plate 22 are parallel to each other, and an elongated positioning groove 23 is provided between the end of the first side plate 21 and the corresponding end of the second side plate 22; a plurality of arc-shaped teeth are fixedly provided at one end of the long direction of the first side plate 21, and the plurality of arc-shaped teeth are used as a first arc-shaped tooth portion 24, and another plurality of arc-shaped teeth are fixedly provided at one end of the long direction of the second side plate 22, and the other plurality of arc-shaped teeth are used as a second arc-shaped tooth portion 25, and the first arc-shaped tooth portion 24 and the second arc-shaped tooth portion 25 are oppositely arranged on both sides of the short direction of the seat body 2. One end of the first arc-shaped tooth portion 24 and one end of the second arc-shaped tooth portion 25 are arranged below the horizontal plane of the slot opening of the long positioning groove 23, and the other end of the first arc-shaped tooth portion 24 and the other end of the second arc-shaped tooth portion 25 are arranged above the horizontal plane of the slot opening of the long positioning groove 23. A first tooth row 313 at one end of the first linkage mechanism 3 is engaged with the first arc-shaped tooth portion 24, so that the first linkage mechanism 3 rotates relative to one side of the seat body 2. A middle plate 26 is covered on the upper part of the seat body 2, and the middle plate 26 abuts against the support seat 51 and fixes the synchronous assembly 5 and the first positioning member 52 on the seat body 2 to close the long positioning groove 23; a first rectangular notch 27 is provided on one side of the short direction of the middle plate 26, and a second rectangular notch 28 is provided on the other side of the short direction of the middle plate 26.

[0120] The first linkage mechanism 3 includes a first rotating member 31, a second rotating member 32, a swinging member 33, a third rotating member 34 and a positioning plate 36. The first rotating member 31 is an elongated block, and includes a vertical plate portion 311 and a horizontal plate portion 312. One end of the vertical plate portion 311 in the long direction has a plurality of teeth arranged in a straight line, and the plurality of teeth arranged in a straight line serve as a first tooth row 313. The first tooth row 313 is engaged with the first arc-shaped tooth portion 24, so as to allow the first rotating member 31 to rotate relative to one side of the seat body 2. The plate surface of the other end of the vertical plate portion 311 in the long direction has an oblique groove, and the oblique groove serves as a limit portion 314. The bottom surface of the horizontal plate portion 312 has a long protrusion, and the long protrusion serves as a first moving portion 315.

[0121] The second rotating member 32 is a long plate, which is connected to the first shell 91. One side of the second rotating member 32 has an arc portion 321 and a second hook portion 322. The bottom surface of the second rotating member 32 has a first protrusion 323 and a second guide rail 324. The second guide rail 324 is an elongated groove connecting the two ends of the second rotating member 32. One end of the second rotating member 32 has a first protrusion 325 and a second protrusion 326 parallel to each other.

[0122] The swinging member 33 has a flat plate for locking and connecting a long plate, the long plate serves as a support plate 95, and the flat plate serves as an adapter plate 331; one side of the adapter plate 331 has an arc plate 332, and the plate surface of the arc plate 332 has an arc through hole, and the arc through hole serves as an arc guide portion 333; the arc portion 321 is accommodated and limited in the arc guide portion 333, so as to allow the swinging member 33 and the second rotating member 32 to swing back and forth relative to each other; it is also possible to selectively set a first elongated guide groove 291 and a second elongated guide groove 292 in parallel between the middle of the first side plate 21 and the middle of the second side plate 22, the middle plate surface of the support plate 95 slides against one end of the first side plate 21, and the middle of the support plate 95 One end is slidably connected to the first elongated guide groove 291; one end of the arc plate 332 has a protrusion, which serves as a positioning portion 334, and the positioning portion 334 is accommodated in the limiting portion 314 of the first rotating member 31 in a relatively movable manner; the other end of the arc plate 332 has a first hook 335, and the first hook 335 is connected to one end of a tension spring, and the tension spring serves as an elastic member 336; and the other end of the elastic member 336 is connected to the second hook 322, so that the swinging member 33 is connected to the second rotating member 32 in an elastic swinging manner, thereby reducing the influence of the gap due to manufacturing tolerance, and allowing one side of the second rotating member 32 to be connected to the other end of the first rotating member 31 in a relatively movable manner.

[0123] One end of the third rotating member 34 has a sliding plate, which serves as a second moving portion 341. The second moving portion 341 and the transverse plate portion 312 are contained and limited in the second guide rail 324, so that the second moving portion 341 and the transverse plate portion 312 are sandwiched between the first protrusion 325 and the second protrusion 326, and one end of the third rotating member 34 and one end of the first rotating member 31 are connected to the second rotating member 32 in a relatively sliding manner; the other end of the third rotating member 34 has a first positioning hole 342, and the first positioning hole 342 is sleeved with a first rotating shaft 343. The third rotating member 34 and the first rotating shaft 343 are thereby allowed to rotate synchronously; a recessed portion 344 is provided between the first positioning hole 342 and the second moving portion 341, and the recessed portion 344 straddles the top of the first side plate 21, so that the other end of the third rotating member 34 is limited in the long positioning groove 23 of the seat body 2; a rectangular flat portion 345 is provided above the first positioning hole 342, and when the first shell 91 and the second shell 92 are relatively turned over and flattened, the flat portion 345 can fill the first notch 27 of the middle plate 26 to jointly support the middle area of ​​the screen 93. In addition, a third moving portion 346 is provided on the bottom surface of the third rotating member 34, wherein the third moving portion 346 includes two long ribs (347, 348) spaced apart and parallel to each other.

[0124] The positioning plate 36 is a rectangular flat plate, and has a first side 361 and a second side 362 that are parallel to each other. From the first side 361 toward the second side 362, the plate surface of the positioning plate 36 has a second pivot hole 363, a first guide rail 364 that is parallel to each other, and a third guide rail 365, and the third guide rail 365 includes two long guide grooves (366, 367) that are spaced apart and parallel to each other. When the positioning plate 36 is assembled to the second rotating member 32, the first protrusion 323 of the second rotating member 32 is pivotally connected to the second pivot hole 363; the first moving portion 315 of the first rotating member 31 is connected to the first guide rail 364 in a relatively movable manner; the two long ribs (347, 348) of the third moving portion 346 are respectively accommodated and limited in the two long guide grooves (366, 367), so that the third moving portion 346 of the third rotating member 34 is connected to the third guide rail 365 in a relatively movable manner.

[0125] The second linkage mechanism 4 has a corresponding structure to the first linkage mechanism 3, and the second linkage mechanism 4 includes a first rotating rod 41, a second rotating rod 42 and a third rotating rod 43, wherein one end of the first rotating rod 41 has a second tooth row 411, and the second tooth row 411 is toothed with the second arc-shaped tooth portion 25, so that the first rotating rod 41 rotates relative to the other side of the seat body 2; the second rotating rod 42 is connected to the second shell 92, one end of the second rotating rod 42 is connected to the other end of the first rotating rod 41 in a relatively movable manner, and one side of the second rotating rod 42 has a second supporting portion 421; and one end of the third rotating rod 43 is connected to the second rotating rod 42 in a relatively sliding manner, and the other end of the third rotating rod 43 has a second positioning hole 431, and the second positioning hole 431 is sleeved with a second rotating shaft 432, so that the third rotating rod 43 and the second rotating shaft 432 rotate synchronously. Thus, when the third rotating rod 43 and the first rotating rod 41 rotate simultaneously and the second rotating rod 42 and the third rotating rod 43 move relatively, an accommodating space 94 can be left at the junction of the first shell 91 and the second shell 92 to accommodate the curved portion in the middle of the screen 93 .

[0126] In this embodiment, the synchronous component 5 includes a first gear 53, an intermediate gear set 54 and a second gear 55 that are meshed in sequence; the support base 51 includes two elongated plates spaced apart and arranged in parallel, and the synchronous component 5 is sandwiched between the two elongated plates, so that the support base 51 can position the synchronous component 5; and the first rotating shaft 343 and the second rotating shaft 432 pass through the two ends of the support base 51, the first gear 53 and the second gear 55 of the synchronous component 5, and the two ends of the first positioning member 52 in sequence, and are locked to the ends of the first rotating shaft 343 and the second rotating shaft 432 with a first end seal 56 and a second end seal 57 respectively, so as to fix and compress the first positioning member 52, and allow the first rotating shaft 343 and the second rotating shaft 432 to rotate in opposite directions, so that the two halves of the relatively bent screen 93 can be stably rotated and positioned at a preset angle during the process of flipping to close or fully unfolding, and can freely stop at a certain angle during rotation.

[0127] Thus, when the first shell 91 and the second shell 92 are in a flattened state, the two elastic members (336, 336') of the first linkage mechanism 3 and the second linkage mechanism 4 respectively pull the two swing members (33, 33'), and one end of the first side plate 21 and the second side plate 22 respectively abut the middle plate surfaces of the two support plates (95, 95'), so that the middle plate 26, the two plane portions (345, 433) and the two support plates (95, 95') can jointly support the screen 93 to generate a comprehensive and stable supporting force; at this time, the two elastic members (336, 336') are respectively stretched to accumulate elastic force and reduce the influence of the gap due to manufacturing tolerance.

[0128] And as Figure 3 and Figures 10 to 13 As shown, when the first shell 91 and the second shell 92 are flipped relative to each other, a group of similar four-bar structures composed of the base body 2, the first rotating shaft 343, the first rotating member 31, the second rotating member 32, and the third rotating member 34, and another group of similar four-bar structures composed of the base body 2, the second rotating shaft 432, the first rotating rod 41, the second rotating rod 42, and the third rotating rod 43, and then through the elastic restoring action of the two elastic members (336, 336'), the two swinging members (33, 33') produce a seesaw-like effect, and at the same time, the two positioning parts (334, 334') of the two swinging members (33, 33') are respectively stopped by the two limiting parts (314, 314'). One side edge of the screen 93 is pushed against the bottom ends of the two limiting portions (314, 314'), so that the two adapter plates (331, 331') and the two support plates (95, 95') are relatively offset by an angle, and then an accommodating space 94 is formed to accommodate the curved middle part of the screen 93.

[0129] In addition, you can choose Figure 2 and Figures 14 to 17 As shown, when the first shell 91 and the second shell 92 are flattened from a closed state, one end of the middle portion of the two support plates (95, 95') is slidably connected to the first elongated guide groove 291 and the second elongated guide groove 292 respectively, wherein an arc surface (or a variable curvature arc surface) can be further formed in the two elongated guide grooves according to the situation, so that one end of the middle portion of the two support plates (95, 95') can slide along. During the flattening process, the plate surfaces of the two support plates (95, 95') always slide against one end of the first side plate 21 and the second side plate 22, thereby causing the two swinging members (33, 33') to rotate relative to the second rotating member 32 and the second rotating rod 42 respectively. When the inner ends of the two arc-shaped guide portions 333 contact the two arc-shaped portions 321 respectively, the second rotating member 32 and the second rotating rod 42 will be pulled to move toward the seat body 2 respectively to compensate for the displacement difference of the rotating shaft structure 1 when it is unfolded. The other side edges of the two limit portions (314, 314') respectively slide against the two positioning portions (334, 334') during the flattening process, and push the two swinging members (33, 33') in the opposite direction to respectively pull the second rotating member 32 and the second rotating rod 42 to move toward the seat body 2, thereby synchronously compensating for the displacement difference.

[0130] Another example Fig.18 , Fig.19As shown, the combination of the above-mentioned synchronous assembly 5, the support seat 51 and the first positioning member 52 can also be replaced by another set of structures, and the replaced structure mainly includes an elongated linkage plate 6, an elongated limiting plate 61, a third toothed member 62 and a fourth toothed member 63, wherein one side surface of the elongated linkage plate 6 presses against four parallel second positioning members 64; the elongated limiting plate 61 is arranged in parallel on the other side of the elongated linkage plate 6; a first toothed member 65 is coaxially arranged on the first rotating shaft 343, and the two ends of the first rotating shaft 343 are respectively positioned on the elongated linkage plate 6 and the elongated limiting plate 61 in a rotational manner; a second toothed member 66 is coaxially arranged on the second rotating shaft 432, and the two ends of the second rotating shaft 432 are respectively positioned on the elongated linkage plate 6 and the elongated limiting plate 61 in a rotational manner; the third toothed member 63 is coaxially arranged on the second rotating shaft 432, and the two ends of the second rotating shaft 432 are respectively positioned on the elongated linkage plate 6 and the elongated limiting plate 61 in a rotational manner; One end of 62 is positioned on the other side of the elongated linkage plate 6, and the third toothed member 62 is gearedly connected to the first toothed member 65 in a relatively movable manner; the fourth toothed member 63 is parallel to the third toothed member 62, and one end of the fourth toothed member 63 is positioned on the other side of the elongated linkage plate 6, and the fourth toothed member 63 is gearedly connected to the second toothed member 66 in a relatively movable manner, so that when the first rotating shaft 343 and the second rotating shaft 432 rotate in opposite directions relative to each other, the third toothed member 62, the fourth toothed member 63 and the elongated linkage plate 6 can move synchronously, and the elongated linkage plate 6 can push the four second positioning members 64, so that the two halves of the relatively bent screen 93 can be stably rotated and positioned at a preset angle during the process of flipping to close or fully unfolding, and can freely stop at a certain angle during rotation.

[0131] In summary, according to the contents disclosed above, the present invention sets a first arc-shaped tooth portion 24 and a second arc-shaped tooth portion 24 in opposite directions on both sides of the seat body 2, the first tooth row 313 of the first rotating member 31 is toothed in the first arc-shaped tooth portion 24, and the second tooth row 411 of the first rotating rod 41 is toothed in the second arc-shaped tooth portion 25, so that the first shell 91 and the second shell 92 can stably rotate in opposite directions, replacing the arc-shaped swing arm that provides displacement compensation in the traditional shaft structure, which helps to reduce the overall thickness and make the overall thinner. The first rotating shaft 343, the first rotating member 31, the second rotating member 32, and the third rotating member 34 form a group of similar four-bar structures, and the seat body 2, the second rotating shaft 432, the first rotating rod 41, the second rotating rod 42, and the third rotating rod 43 together form another group of similar four-bar structures. When the first shell 91 and the second shell 92 are matched, the third rotating member 34 / the third rotating rod 43 and the first rotating member 31 / the first rotating rod 41 are respectively slidably connected to the two positioning plates 36, so that when the first shell 91 and the second shell 92 are displaced and rotated, a The travel path and length are converted for compensation to compensate for the size difference between the radius of curvature formed by the bending part of the flexible screen or the double hard screen folding structure and the radius of curvature between the two shells, and at the same time, the two adapter plates (331, 331') are pulled to provide clearance space so that the flexible screen can be folded and folded; when the screen is flattened, the two adapter plates (331, 331') can be pulled respectively by the two elastic members (336, 336') to reset the two adapter plates (331, 331'), thereby forming a stable support for the screen and reducing the influence of the idling travel during the folding process.

[0132] The above description is only a preferred embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

Claims

1. A shaft structure, comprising a base, a first linkage mechanism and a second linkage mechanism, wherein the first linkage mechanism and the second linkage mechanism are respectively connected to two sides of the base, and the first linkage mechanism and the second linkage mechanism are respectively connected to two halves of a screen for relatively bending the screen; characterized in that: One end of the seat body has a first arc-shaped tooth portion; as well as The first linkage mechanism comprises: A first rotating member, one end of which has a first tooth row, the first tooth row is engaged with the first arc-shaped tooth portion for rotating the first rotating member; a second rotating member, one side of which is connected to one side of the first rotating member in a relatively movable manner; A third rotating member has one end connected to the second rotating member in a relatively movable manner, and the other end of the third rotating member is connected to a first rotating shaft in a synchronously rotating manner. The first rotating shaft is pivotally arranged on the seat body; the third rotating member and the first rotating member rotate simultaneously.

2. The rotating shaft structure according to claim 1, characterized in that: The first rotating member includes a vertical plate portion, and one end of the vertical plate in the longitudinal direction has a plurality of teeth arranged in a straight line, and the plurality of teeth arranged in a straight line serve as a first tooth row. The first arc-shaped tooth portion is fixedly disposed at one end of the seat body, and the first tooth row is connected to the first arc-shaped tooth portion. The first rotating member rotates relative to one side of the seat body.

3. The rotating shaft structure according to claim 1, characterized in that: One side of the base body has a first side plate, and the other side of the base body has a second side plate, and an elongated positioning groove is provided between the end of the first side plate and the end of the second side plate, one end of the first arc-shaped tooth portion is arranged below the horizontal plane of the slot of the elongated positioning groove, and the other end of the first arc-shaped tooth portion is arranged above the horizontal plane of the slot of the elongated positioning groove.

4. The rotating shaft structure according to claim 1, characterized in that: It also includes a positioning plate, on the plate surface of which a first guide rail and a third guide rail are provided; the first rotating member has a first moving portion, which is connected to the first guide rail in a relatively movable manner; the third rotating member has a third moving portion, which is connected to the third guide rail in a relatively movable manner.

5. The rotating shaft structure according to claim 1, characterized in that: The other end of the first rotating member has a transverse plate portion, one end of the third rotating member has a second moving portion, the second rotating member has a second guide rail, the second guide rail connects the transverse plate portion and the second moving portion, and the first rotating member and the third rotating member slide relative to the second rotating member.

6. The rotating shaft structure according to claim 1, characterized in that: It also includes a swinging member, one end of which has an arc-shaped guide portion, one side of which has an arc-shaped portion, the arc-shaped portion is connected to the arc-shaped guide portion, the swinging member and the second rotating member swing relative to each other, the other end of the swinging member has an adapter plate, the adapter plate is connected to a support plate; one side of the seat body has a first side plate, the other side of the seat body has a second side plate, a first elongated guide groove is provided between the middle part of the first side plate and the middle part of the second side plate, a plate surface in the middle part of the support plate slides against one end of the first side plate, and one end of the middle part of the support plate is slidably connected to the first elongated guide groove.

7. The rotating shaft structure according to claim 6, characterized in that: One end of the swinging member has a first hook portion, which is connected to one end of an elastic member; one side of the second rotating member has a second hook portion, which is connected to the other end of the elastic member, and the swinging member is connected to the second rotating member in an elastic swinging manner.

8. The rotating shaft structure according to claim 6, characterized in that: The other end of the first rotating member has a limiting portion, and one end of the swinging member has a positioning portion, and the positioning portion is connected to the limiting portion in a relatively movable manner.

9. The rotating shaft structure according to claim 1, characterized in that: One side of the base body has a first side plate, and the other side of the base body has a second side plate, and an elongated positioning groove is provided between the end of the first side plate and the end of the second side plate; one end of the third rotating member has a second movable portion, and the second movable portion is connected to the second rotating member in a relatively sliding manner, and the other end of the third rotating member has a first positioning hole, and the first positioning hole is connected to the first rotating shaft in a synchronously rotating manner; a recessed portion is provided between the second movable portion and the first positioning hole, and the recessed portion bridges the first side plate so that the other end of the third rotating member is limited in the elongated positioning groove.

10. The rotating shaft structure according to any one of claims 1 to 9, characterized in that: One end of the seat body has a second arc-shaped tooth portion, and the first arc-shaped tooth portion and the second arc-shaped tooth portion are arranged in opposite directions on both sides of the seat body; the second linkage mechanism and the first linkage mechanism have corresponding structures, and the second linkage mechanism has a second rotating shaft and a second tooth row, the first rotating shaft and the second rotating shaft are parallel and juxtaposed, and the second tooth row is toothed with the second arc-shaped tooth portion.

11. The rotating shaft structure according to claim 10, characterized in that: The cam body is provided with a plurality of locking members, each of which is provided with a plurality of locking members, and the plurality of locking members are provided with a plurality of locking members. The plurality of locking members are provided with a plurality of locking members, and the plurality of locking members are provided with a plurality of locking members.

12. The rotating shaft structure according to claim 10, characterized in that: The invention also comprises an elongated linkage plate, an elongated limiting plate, a third toothed member and a fourth toothed member, one side surface of the elongated linkage plate presses against at least one second positioning member, and the elongated limiting plate is arranged in parallel with the other side of the elongated linkage plate; a first toothed member is arranged coaxially with the first rotating shaft, and the two ends of the first rotating shaft are respectively positioned on the elongated linkage plate and the elongated limiting plate in a rotational manner; a second toothed member is arranged coaxially with the second rotating shaft, and the two ends of the second rotating shaft are respectively positioned on the elongated linkage plate and the elongated limiting plate in a rotational manner; the One end of the third toothed member is positioned on the other side of the elongated linkage plate, and the third toothed member is geared to the first toothed member in a relatively movable manner; the fourth toothed member is parallel to the third toothed member, and one end of the fourth toothed member is positioned on the other side of the elongated linkage plate, and the fourth toothed member is geared to the second toothed member in a relatively movable manner, so that when the first rotating shaft and the second rotating shaft rotate in opposite directions relative to each other, the third toothed member, the fourth toothed member and the elongated linkage plate can move synchronously, and the elongated linkage plate can push at least one second positioning member.

13. The rotating shaft structure according to claim 10, characterized in that: The second linkage mechanism includes a first rotating rod, a second rotating rod and a third rotating rod, one end of the first rotating rod has a second tooth row, the second tooth row is toothed with the second arc-shaped tooth portion for rotating the first rotating rod; the second rotating member is connected to a first shell, the second rotating rod is connected to a second shell, one side of the second rotating rod is connected to the other end of the first rotating rod in a relatively movable manner, and one end of the second rotating rod has a second supporting portion; one end of the third rotating rod is connected to the second rotating rod in a relatively sliding manner, and the other end of the third rotating rod is connected to the second rotating shaft in a synchronously rotating manner, so that the third rotating rod and the first rotating rod rotate simultaneously.

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