Rotating shaft structure

Abstract

The invention 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 for relatively bending the screen; 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 present invention relates to a hinge, and in particular to a hinge structure of a foldable electronic device. Background Art

[0002] In existing "folding devices," different hinge structure designs are required depending on whether the device folds inward or outward, as well as the curvature of the curved portion, to avoid hindering the folding action of the screen and causing pulling. Folding devices with inward-folding screens mainly follow the traditional folding device in terms of opening and closing action. 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 is limited by the type of screen used, and it is also necessary to consider whether 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 creates differences. Among them, the components that need to be considered, the connection relationship and action between them, are all key factors affecting whether the screen is susceptible to damage 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 hinge structure provides better effect by providing displacement compensation through a virtual rotation center when folded. For example, as shown in the "flexible screen hinge structure" with patent publication number CN219345251U, it mainly pivots two hinge modules at the 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 in patent publication number CN219345251U primarily utilizes two guides to connect the two curved portions of the base, allowing the two curved swing arms to swing relative to each other on the base. In actual production, the combination of the "curved guides" and "curved portions" is not only difficult to manufacture separately, increasing production costs, but also prone to looseness, instability, or choppy operation during assembly due to manufacturing tolerances. Summary of the Invention

[0005] In view of this, in order to provide a structure different from the prior art and to improve the above-mentioned shortcomings, the inventors have accumulated many years of experience and continued research and development to produce the present invention.

[0006] One purpose of the present invention is to provide a hinge structure that can solve the production and manufacturing difficulties of the existing hinge structure's base and arc-shaped swing arm using an "arc-shaped guide portion" and an "arc-shaped portion", as well as the problem of looseness, instability or unsmoothness. The present invention can facilitate manufacturing and assembly by connecting the first arc-shaped tooth portion of the base to the first tooth row of the first rotating member, and by a similar four-bar structure composed of the base, the first hinge, 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 overall folding process, a stable transmission effect can be formed, and when the overall body 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 invention, the rotating shaft structure provided by the present invention 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 features 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, and 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 arranged at one end of the base 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 base body.

[0009] During implementation, one side of the base body has a first side plate, and the other side of the base body has a second side plate. There is an elongated positioning groove 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 present invention also includes a positioning plate, the plate surface of which has a first guide rail and a third guide rail; 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.

[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 present invention 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, and 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 base body has a first side plate, and the other side of the base 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 of the support plate slides against one end of the first side plate, and one end in the middle 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, which is connected to one end of an elastic member; one side of the second rotating member has a second hook, which is 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 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 synchronous rotation 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.

[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 present invention also includes a support seat, a synchronous component and a first positioning member, wherein the support seat positions the synchronous component, the first rotating shaft and the second rotating shaft pass through the support seat, the synchronous component and the first positioning member in sequence, and are respectively locked to the first rotating shaft and the second rotating shaft with 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. The seat body also includes a middle plate, which abuts the support seat and fixes the synchronous component and the first positioning member on the seat body.

[0018] During implementation, the present invention 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 parallel to 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 and the elongated limiting plate in a rotational manner 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, 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 move synchronously, and the elongated linkage plate pushes 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, and 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 support 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.

[0020] To further understand the present invention, preferred embodiments are given below, along with the accompanying drawings and reference numerals, to describe in detail the specific components of the present invention and the effects achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] Figure 1 This is a schematic diagram of the three-dimensional appearance of the preferred embodiment of the present invention when the first shell and the second shell are connected; Figure 2 An exploded view of some components of a preferred embodiment of the present invention; Figure 3 An exploded view of the components of a preferred embodiment of the present invention; Figure 4 An exploded view of some components of a preferred embodiment of the present invention; Figure 5 A partial three-dimensional schematic diagram of the appearance of a preferred embodiment of the present invention; Figure 6 A partial three-dimensional schematic diagram of the appearance of a preferred embodiment of the present invention from another perspective; Figure 7 FIG1 is a top view of a preferred embodiment of the present invention when flattened; Figure 8 for Figure 7 A-A' cross-section diagram; Figure 9 for Figure 7 B-B' cross-section; Figure 10 AA' cross-sectional view of a preferred embodiment of the present invention during the bending process; Figure 11 BB' cross-sectional view of a preferred embodiment of the present invention during the bending process; Figure 12 FIG2 is a BB' cross-sectional view of a preferred embodiment of the present invention after bending; Figure 13 FIG1 is a schematic diagram of the three-dimensional appearance of a preferred embodiment of the present invention after being bent; Figure 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 present invention are bent; Figure 15 This is a schematic diagram of the use of two support plates during the flattening process of the first shell and the second shell of the present invention; Figure 16 This is a schematic diagram of the use of two support plates during the process of continuing to flatten the first shell and the second shell of the present invention; Figure 17 This is a schematic diagram of the use state of the two support plates after the first shell and the second shell of the present invention are flattened; Figure 18 is a schematic three-dimensional appearance diagram of another embodiment of some components of the present invention; Figure 19 for Figure 18 C-C' cross-section diagram.

[0023] Description of Reference Numerals 1: Shaft structure; 2: base body; 21: first side panel; 22: second side panel; 23: long positioning groove; 24: first arc-shaped tooth portion; 25: second arc-shaped tooth portion; 26: middle plate; 27: First gap; 28: second gap; 291: first elongated guide groove; 292: second elongated guide groove; 3: first linkage mechanism; 31: first rotating member; 311: Vertical board part; 312: horizontal plate; 313: first tooth row; 314,314': limiting portion; 315: first moving part; 32: second rotating member; 321: arcuate portion; 322: second hook; 323: first protrusion; 324: second guide rail; 325: first bump; 326: second bump; 33,33': swinging piece; 331,331': adapter plate; 332: curved plate; 333: arc-shaped guide portion; 334,334': positioning portion; 335: first hook; 336,336': elastic member; 34: third rotating member; 341: second moving part; 342: first positioning hole; 343: first rotating shaft; 344: recessed portion; 345,433: plane part; 346: third mobile unit; 347,348: long ribs; 36: positioning plate; 361: first side; 362: second side; 363: second pivot hole; 364: first guide rail; 365: third guide rail; 366,367: long guide groove; 4: Second linkage mechanism; 41: first rotating rod; 411: second tooth row; 42: second rotating rod; 421: second supporting portion; 43: third rotating rod; 431: second positioning hole; 432: second rotating shaft; 5: Same moving component; 51: support seat; 52: first positioning member; 53: first gear; 54: intermediate gear set; 55: second gear; 56: first end seal; 57: second end seal; 6: long linkage plate; 61: long limiting plate; 62: third toothed member; 63: fourth toothed member; 64: second positioning member; 65: first toothed member; 66: second toothed member; 91: first shell; 92: second housing; 93: screen; 94: Accommodation space; 95,95': Support plate. DETAILED DESCRIPTION

[0024] See also Figure 1 As shown, the rotating shaft structure 1 of the present invention mainly includes a base 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 both sides of the base 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 flipped, thereby enabling the screen 93 to be relatively flipped, folded or flattened, and when the whole is bent, it can be as shown. Figure 12 As shown, an accommodating space 94 is 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 .

[0025] like Figures 2 to 9As shown, a preferred embodiment of the rotating shaft structure 1 of the present invention includes a base 2, a first linkage mechanism 3, a second linkage mechanism 4, a co-acting component 5, a support base 51 and a first positioning member 52, wherein the base 2 is an elongated shell with an open top surface. When flattened, the base 2 is located between the first shell 91 and the second shell 92; one side of the base 2 has a first side plate 21, and the other side of the base 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 in 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 in the long direction of the second side plate 22, and the another 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 base 2. One end of the first arcuate tooth portion 24 and one end of the second arcuate tooth portion 25 are positioned below the horizontal plane of the elongated positioning slot 23, while the other ends of the first arcuate tooth portion 24 and the other ends of the second arcuate tooth portion 25 are positioned above the horizontal plane of the elongated positioning slot 23. A first tooth row 313 at one end of the first linkage mechanism 3 engages with the first arcuate tooth portion 24, thereby enabling the first linkage mechanism 3 to rotate relative to one side of the base 2. A middle plate 26 is fitted over the base 2. The middle plate 26 abuts against the support seat 51 and securely secures the synchronous assembly 5 and the first positioning member 52 to the base 2, thereby closing the elongated positioning slot 23. A first rectangular notch 27 is formed on one short side of the middle plate 26, and a second rectangular notch 28 is formed on the other short side of the middle plate 26.

[0026] 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 comprising a vertical plate portion 311 and a horizontal plate portion 312. One end of the vertical plate portion 311 has a plurality of linearly arranged teeth, forming a first tooth row 313. The first tooth row 313 engages with the first arcuate tooth portion 24, thereby allowing the first rotating member 31 to rotate relative to one side of the base 2. The other end of the vertical plate portion 311 has an oblique groove on its surface, which serves as a stopper 314. The bottom surface of the horizontal plate portion 312 has an elongated protrusion, which serves as a first movable portion 315.

[0027] 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. At one end of the second rotating member 32, there are a first protrusion 325 and a second protrusion 326 parallel to each other.

[0028] The swinging member 33 has a flat plate for locking and connecting a long plate, which 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-shaped plate 332, and the plate surface of the arc-shaped plate 332 has an arc-shaped through-hole, which serves as an arc-shaped guide portion 333; the arc portion 321 is accommodated and limited in the arc-shaped 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; a first elongated guide groove 291 and a second elongated guide groove 292 can also be optionally arranged in parallel between the middle of the first side plate 21 and the middle of the second side plate 22, and 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, which 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, 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.

[0029] 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 accommodated 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. This allows the third rotating member 34 and the first rotating shaft 343 to rotate synchronously. A recessed portion 344 is defined between the first positioning hole 342 and the second movable portion 341. The recessed portion 344 spans the top of the first side plate 21, allowing the other end of the third rotating member 34 to be positioned within the elongated positioning slot 23 of the base 2. A rectangular flat portion 345 is defined above the first positioning hole 342. When the first and second shells 91, 92 are flipped relative to each other and flattened, the flat portion 345 can fill the first notch 27 of the middle plate 26, thereby jointly supporting the center area of the screen 93. Furthermore, a third movable portion 346 is defined on the bottom surface of the third rotating member 34. The third movable portion 346 comprises two long, spaced, and parallel ribs (347, 348).

[0030] The positioning plate 36 is a rectangular flat plate having 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 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 on its surface. The third guide rail 365 includes two long guide slots (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 movable portion 315 of the first rotating member 31 is connected to the first guide rail 364 in a relatively movable manner; and the two long ribs (347, 348) of the third movable portion 346 are respectively accommodated and confined in the two long guide slots (366, 367), thereby allowing the third movable portion 346 of the third rotating member 34 to be connected to the third guide rail 365 in a relatively movable manner.

[0031] 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 in the second arc-shaped tooth portion 25, so that the first rotating rod 41 rotates relative to the other side of the base body 2; the second rotating rod 42 is connected to the second shell 92, and 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 relative to each other, an accommodating space 94 can be left at the intersection of the first shell 91 and the second shell 92 to accommodate the curved portion in the middle of the screen 93.

[0032] 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 unfolded, and can freely stop at a certain angle during rotation.

[0033] 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 swinging 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 flat 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.

[0034] And as Figure 3 and Figures 10-13 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 the elastic force recovery action of the two elastic members (336, 336') causes the two swinging members (33, 33') to produce a seesaw-like effect, and at the same time, the two positioning portions (334, 334') of the two swinging members (33, 33') are respectively stopped by the two limiting portions (314, 314'). One side 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, thereby forming an accommodating space 94 to accommodate the curved middle portion of the screen 93.

[0035] In addition, you can also choose Figure 2 and Figures 14-17 As shown, when the first shell 91 and the second shell 92 are flattened from the 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 as needed, 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 respectively contact the two arc portions 321, they will respectively pull the second rotating member 32 and the second rotating rod 42 to move toward the base body 2 to compensate for the displacement difference of the rotating shaft structure 1 when it is unfolded. The other side edges of the two limiting 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 pull the second rotating member 32 and the second rotating rod 42 to move toward the base body 2, thereby synchronously compensating for the displacement difference.

[0036] Another example Figure 18 、 Figure 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 parallel to 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 One end of 62 is positioned on the other side of the elongated linkage plate 6, and the third toothed member 62 is toothedly 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 toothedly 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 relative opposite directions, 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 closed or fully extended, and can freely stop at a certain angle during rotation.

[0037] In summary, according to the content 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 base body 2, the first tooth row 313 of the first rotating member 31 is toothed with the first arc-shaped tooth portion 24, and the second tooth row 411 of the first rotating rod 41 is toothed with the second arc-shaped tooth portion 25, so that the first shell 91 and the second shell 92 can rotate stably 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 four-link structure, and the base 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 four-link structure. When the first shell 91 and the second shell 92 are aligned, 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, forming a The travel path and length are converted for compensation to compensate for the size difference between the curvature radius formed by the bending portion of the flexible screen or the dual-hard screen folding structure and the curvature radius between the two shells, while simultaneously pulling and driving the two adapter plates (331, 331') to provide clearance space, so that the flexible screen can be folded and retracted; when the screen is flattened, the two adapter plates (331, 331') can be reset by pulling the two elastic members (336, 336') respectively, forming a stable support for the screen and reducing the impact of the idling stroke during the folding process.

[0038] The above description is only a preferred embodiment of the present invention. Obviously, the described embodiment is only a part of the embodiment of the present invention, not all embodiments. Based on the embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

Claims

1. A hinge 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 relative bending of the screen; characterized in that: One end of the base body has a first arc-shaped tooth portion; as well as The first linkage mechanism includes: a first rotating member having a first tooth row at one end thereof, the first tooth row being 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 mounted on the base body; thereby, the third rotating member and the first rotating member rotate simultaneously.

2. The rotating shaft structure according to claim 1, wherein: 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 on one end of the base body, and the first tooth row is toothed in engagement with the first arc-shaped tooth portion, thereby allowing the first rotating member to rotate relative to one side of the base body.

3. The rotating shaft structure according to claim 1, wherein: One side of the base body has a first side plate, and the other side of the base body has a second side plate. There is an elongated positioning groove 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, wherein: It also includes a positioning plate, which has a first guide rail and a third guide rail on its plate surface; 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, wherein: 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, and the second rotating member has a second guide rail, which connects the transverse plate portion and the second moving portion for the first rotating member and the third rotating member to slide relative to the second rotating member.

6. The rotating shaft structure according to claim 1, wherein: 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 being connected to the arc-shaped guide portion, so that the swinging member and the second rotating member can swing relative to each other, and the other end of the swinging member has an adapter plate, which is connected to a support plate; one side of the base body has a first side plate, and the other side of the base 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.

7. The rotating shaft structure according to claim 6, wherein: 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, allowing the swinging member to be connected to the second rotating member in an elastic swinging manner.

8. The rotating shaft structure according to claim 6, wherein: 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, wherein: 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 synchronous rotation manner; a recessed portion is provided between the second movable portion and the first positioning hole, and the recessed portion spans the first side plate, so that the other end of the third rotating member is limited to 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 base 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 base 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, wherein: The cam is secured to the chassis and has a locking mechanism configured to lock the chassis and the chassis to a position that is configured to lock the chassis and the chassis. The cam is secured to the chassis and the chassis to a position that is configured to lock the chassis and the chassis.

12. The rotating shaft structure according to claim 10, wherein: The cam is provided with a plurality of tooth-shaped parts, and the plurality of tooth-shaped parts are provided with a plurality of tooth-shaped parts, and the plurality of tooth-shaped parts are provided with a plurality of tooth-shaped parts. The plurality of tooth-shaped parts are provided with a plurality of tooth-shaped parts, and the plurality of tooth-shaped parts are provided with a plurality of tooth-shaped parts. One end of the third toothed member is positioned on the other side surface 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 surface 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 move synchronously, and the elongated linkage plate pushes at least one second positioning member.

13. The rotating shaft structure according to claim 10, wherein: 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 in 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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