TWI693581B - A hinge module for the foldable type device - Google Patents

Abstract

The present invention is provided a hinge module for the foldable type device. One end surface thereof being contacted a flexible displayer, and the other end surface thereof being connected respectively to a first housing and a second housing, said hinge module comprises a base and a first sliding mechanism. Said first sliding mechanism further includes a seat linkage, a first slider, a supporting plate, a gearing linkage, a second rack, and a middle gearing piece. Wherein said seat linkage and said gearing linkage are respectively pivoted and coupled to both of a first pivoted part and a second pivoted part of said base. A stop-limited part of one end of said supporting plate is limited and stopped on a first stopping part of said base. A second connecting part of the other end of said supporting plate is utilized the way of arc-moved swing to link a first connecting part of said first slider. A first rack of said gearing linkage is meshed with a gearwheel part of said middle gearing piece, and one end of said middle gearing piece is slid and positioned on said movable piece, so that make said supporting plate to swing by offset as to accommodate a curved-part of said flexible displayer.

Description

Rotating shaft module of folding device (1)

The invention relates to a rotating shaft, in particular to a rotating shaft module of a folding electronic device.

Traditional folding electronic devices, as shown in the Patent Foldable Display of Patent Publication No. CN105788452 A of the People’s Republic of China, show a folding structure of a rotating shaft, which is mainly composed of a first body and a third body of a hinge Are respectively connected to the first support member and the second support member, and the first support member and the second support member are combined with a flexible display module, so that after the first body and the third body rotate relative to the second body, the The flexible display modules on the first support and the second support are folded together. Due to the need to provide a structure on the second body that allows the first and third bodies to rotate, it is not possible to effectively reduce the space between the two bodies that can be reserved for the rotating shaft. This design will increase the overall volume. Not only is it not conducive to the overall design of the electronic device, but also does not meet the market demand that the overall volume gradually becomes lighter and thinner.

As shown in the three patent cases of CN103576775A, CN106205385A, and US9250733B, the two bodies are relatively opened and closed with a two-axis rotating shaft or an approximately two-axis structure; and the "support structure" of these three patent cases All one end is pivotally connected through the "solid shaft" and the other end is movable. When the entire "folding device" is closed, each support structure in the two bodies will be subjected to another urging member, such as: spring, Driven by tension springs, iron suction, and torsion springs, an internal accommodating space is provided for accommodating the curved middle part of the flexible display, and flattened throughout the folding device At this time, each support structure separately supports the flattened middle portion of the flexible display. Another example is the invention of the People's Republic of China that published the patent case No. CN106255935A "Folding Equipment" and the patent case No. CN103034293B "Display System", which consisted of one or two connecting rods to form a linkage group to promote The "supporting structure" where the "solid axis" is pivotally connected is displaced, so that the distance is reduced to accommodate the "flexible display bending part" effect. The design concept of this "compensation mechanism that can compensate for the folding path" is also shown in the two cases of US9791892B and US10001810B. Among them, the case of US9791892B can be regarded as an extension of Figures 16a~16c of CN106255935A, and the case of US10001810B is in one. The body (220 in FIG. 2 and 920 in FIG. 9) is provided with a "mechanism that can compensate for the folding path", including a translation plate (225 in FIG. 2 and 921 in FIG. 9), a link assembly (330 and FIG. 2 in FIG. 2) 9 of 920) or a gear assembly (340 of FIG. 10a) with a guide (331 of FIG. 9 and 341 of FIG. 10a) to achieve the effect of compensating for the difference in folding path.

However, the connection relationship and structure of each part of the "mechanism that can compensate for the folding path" used in the above patent cases are quite complicated, and most of them use a direct pivot connection structure, which is not ideal in terms of transmission stability, and its In the process of the displacement of the "support structure" to reduce the pitch to accommodate the "flexible display bending part", since the relative movement to reduce the speed is the same, it is easy to be flexible because of the uneven force of the folding action. The display may be pulled or pushed, causing wrinkles or peeling in the middle bend of the flexible display. In view of this, in order to provide a structure different from the conventional technology and to improve the above-mentioned shortcomings, the inventor has accumulated many years of experience and continuous research and development improvements, and the invention has been produced.

An object of the present invention is to provide a rotating shaft module, which can be made thinner by the connection relationship and structural features between the first slider, the support plate body, the link plate and a gear module during the overall folding process "Compensation mechanism for compensating folding path" as a whole and simplify the parts used to reduce Cost of production. And in the whole bending and flattening, when the second connecting portion of the supporting plate body swings relative to the first connecting portion of the first slider in an arc shape, a free swinging effect similar to a shaftless seesaw can be generated to maintain the stability of the transmission . It does not need to be pivotally connected with a solid axis as in the conventional technology. When the whole is bent, it can provide a receiving space to accommodate the curved middle part of the flexible display, and when the whole is flat, it can expand the flexible display. The flat middle part forms a stable support.

It is an object of the present invention to provide a rotating shaft module which, through an intermediate gear having a different gear ratio, respectively meshes the first rack and the second rack, can allow a fixed housing connected to the first rack Different moving speed can be formed with the movable housing connected to the second rack, to avoid the pulling force or pushing of the flexible display caused by the force of folding action, thereby prolonging the service life of the flexible display and achieving the compensation of the difference in folding path effect.

To achieve the above purpose, one end face of the hinge module of the folding device of the present invention simultaneously contacts a flexible display to bend the flexible display relatively, and the other end face of the hinge module is connected to the first housing and the The second shell is for linking the first shell and the second shell, so that the first shell and the second shell are relatively turned over; the first shell includes a fixed shell and a movable body that can expand and contract relative to the fixed shell Housing; the shaft module includes a base and a first sliding mechanism, one end of the base has a first pivoting portion, a second pivoting portion and a first stop portion; the first sliding mechanism includes A base, a first slider, a supporting plate body, a linkage plate, a second rack, and an intermediate gear. Wherein, the base is connected to the fixed housing, one end of the base is pivotally connected to the first pivoting portion; the first slider is connected to the movable housing, and one side of the first slider is connected to one side of the base in a relatively slidable manner, The first slider has a first connecting portion; one end of the supporting plate body has a limiting portion for restricting on the first stop portion; one side of the supporting plate body has a second connecting portion connected by the second connecting portion The first connecting portion is for the supporting plate body to swing relative to the first slider arc; one end of the linking plate is pivotally connected to the second pivoting portion, and the other end of the linking plate is provided with a first rack. The relative movement is limited to the base; the second rack is connected to the movable housing; and the intermediate gear has a different A first gear portion and a second gear portion of one of the gear ratios, the first gear portion meshes with the first rack, and the second gear portion meshes with the second rack.

In practice, the first stop portion is a stepped surface formed at one end of the base for restricting the support plate body from being shifted by an angle; the end portion adjacent to the base has a guide surface, the guide surface is away from the end portion The direction is inclined downward.

During implementation, the end portion adjacent to the base further has a support surface, the support surface is adjacent to the guide surface and forms an angle with the guide surface, so that the limiting portion of the support plate body after offset is pressed against and supported.

In practice, one end of the first slider has an inclined surface, and the first connecting portion is an arc-shaped guide groove formed on one side of the first slider and recessed inward from the inclined surface; the second connecting portion includes an arc-shaped portion And a reset member, the arc-shaped part is formed on one side of the supporting plate body, and both ends of the reset member are connected to the arc-shaped part and the first slider, respectively, for the arc-shaped part to be accommodated in the arc-shaped guide in a sliding manner relative to the arc Inside the slot.

In practice, the supporting plate body includes a supporting plate and a connecting plate, one end of the connecting plate is connected to the supporting plate, and the other end of the connecting plate has an arc portion of the second connecting portion. In further implementation, the supporting plate and the connecting plate can also be combined into an integrally formed structure.

In practice, the linking plate includes a first linking piece and a second linking piece stacked on top of each other, one end of the first linking piece has a first shaft, and one end of the second linking piece has a second shaft, the first shaft and The second shaft is respectively pivotally connected to the second pivotal portion; a hollow groove is formed between the two sides of the base for passing and moving the first linking piece and the second linking piece stacked up and down.

During implementation, the other end of the linkage plate is pivotally connected to one end of the first rack.

During implementation, the base has a long guide slot, and the bottom surface of the first rack has a guide post that penetrates into the long guide slot for the first rack to be limited to the base in a relatively movable manner.

In practice, the gear diameter of the first gear portion is smaller than the gear diameter of the second gear portion; the number of teeth of the first gear portion is less than the number of teeth of the second gear portion.

In practice, the present invention further includes a second slider, which is connected to the movable housing, Moreover, one side of the second slider is connected to the other side of the base in a relatively slidable manner.

During implementation, the present invention further includes a telescopic module. The telescopic module includes a positioning block, a compression spring and a moving part. The positioning block is connected to the base. The positioning block has a positioning rod for passing through to locate the compression spring and the moving part. One end has a positioning space for inserting a positioning rod, and the moving part is connected to the movable housing.

During implementation, the other end of the base further has a third pivoting portion, a fourth pivoting portion and a second stop portion. The rotating shaft module of the present invention further includes a second sliding mechanism, the second sliding The mechanism has a corresponding structure to the first sliding mechanism, and is symmetrically arranged at both ends of the base.

In order to further understand the present invention, the following provides preferred embodiments, in conjunction with the drawings and drawing numbers, and describes in detail the specific components of the present invention and the achieved effects as follows.

1: hinge module of folding device

11: The first shell

111,121: fixed housing

112,122: movable shell

113,123: frame

114,124: Tablet

12: Second shell

13: Flexible display

14: accommodating space

2: base

21: The first pivot

22: Second pivot

23: First stop

24: Third pivot

25: Fourth pivot

26: Second stop

27: First gear

28: second gear

29: intermediate gear

3: The first sliding mechanism

3’: Second sliding mechanism

31: Base

311: Long guide groove

312,312’: Go on track

313: Groove

314: linkage

315: Guide surface

316: Support surface

317: Hollow groove

32: First slider

321,331: Lower track

322: Bevel

323: First connection

324: accommodating long slot

33: Second slider

34: Support plate

341: Support plate

342: connection board

343: Limit

344: Arc

345: Reset piece

346: Second connection

347: ear piece

35: linkage board

351: First Linkage

352: Second Linkage

353: First axis

354: Second axis

355: first rack

356: Guide post

36: Second rack

37: intermediate gear

371: The first gear part

372: Second gear part

38: Telescopic module

381: positioning block

382: Compression spring

383: Moving parts

384: Positioning rod

385: Positioning space

FIG. 1 is a schematic perspective view of the preferred embodiment of the hinge module of the present invention when the first housing and the second housing are connected.

FIG. 2 is an exploded view of some components of the first and second sliding mechanisms of the preferred embodiment of the rotating shaft module of the present invention.

FIG. 3 is an exploded view of some components of the first sliding mechanism of the preferred embodiment of the rotary shaft module of the present invention.

FIG. 4 is a top view of a preferred embodiment of the hinge module of the present invention.

Figure 5 is a cross-sectional view taken along line A-A' of Figure 4.

Figure 6 is a cross-sectional view taken along the line B-B' of Figure 4.

FIG. 7 is a cross-sectional view of the invention of FIG. 5 after bending.

FIG. 8 is a cross-sectional view of the invention of FIG. 6 after bending.

FIG. 9 is a schematic perspective view of the preferred embodiment of the hinge module of the present invention after bending.

As shown in FIG. 1, one end face of the hinge module 1 of the folding device of the present invention simultaneously contacts two halves of a flexible display 13, and the other end face of the hinge module 1 is connected to a first housing 11 and A second casing 12 for linking the first casing 11 and the second casing 12 to relatively turn the first casing 11 and the second casing 12 so that the flexible display 13 can be relatively bent or flattened, When the whole is bent, as shown in FIG. 7, an accommodating space 14 can be made at the junction of the first casing 11 and the second casing 12 to accommodate the middle bending portion of the flexible display 13. In this embodiment, the first shell 11 and the second shell 12 have the same structure. The first shell 11 and the second shell 12 respectively include a fixed shell (111, 121) and can be respectively relative to the fixed shell (111,121) telescopic movable casings (112,122), each movable casing (112,122) includes an outer frame (113,123) and a plate (114,124) connected to the outer frame (113,123), the two plates (114,124) are located in the flexible Bottom surface of the sex display 13.

As shown in Figures 2-6, it is a preferred embodiment of the hinge module 1 of the folding device of the present invention, which includes a base 2, a first sliding mechanism 3 and a second sliding mechanism 3' , Wherein the base 2 is located between the first housing 11 and the second housing 12, and one end of the base 2 has a first pivot portion 21, a second pivot portion 22 and a first stop on different axes At the other end of the stop portion 23, the base 2 has a third pivot connection portion 24, a fourth pivot connection portion 25 and a second stop portion 26 opposite to the above-mentioned pivot connection portions and the first stop portion 23. The first stop portion 23 and the second stop portion 26 are step surfaces formed on both ends of the base 2, respectively. The first sliding mechanism 3 and the second sliding mechanism 3'are pivotally connected to both ends of the base 2, respectively, so that the first sliding mechanism 3 and the second sliding mechanism 3'are symmetrically arranged. The base 2 has a first gear 27 and a second gear 28. The first gear 27 is connected to the fixed casing 111 of the first casing 11 and the second gear 28 is connected to the fixed casing 121 of the second casing 12. A gear 27 meshes with the second gear 28 via the intermediate gear 29. During implementation, the first gear 27 and the second gear 28 can also mesh with each other and move together, so that the second sliding mechanism 3'and the first sliding mechanism 3 are relatively reversed . In this embodiment In this case, the first sliding mechanism 3 and the second sliding mechanism 3'have the same structure, and the following explanation will be presented by taking the first sliding mechanism 3 as an example.

The first sliding mechanism 3 includes a base 31, a first slider 32, a second slider 33, a support plate 34, a linkage plate 35, a second rack 36, an intermediate gear 37, and a telescopic Module 38. The bottom surface of the base 31 is connected downward to the fixed housing 111. The bottom surface of the base 31 has a long guide groove 311, one end of the base 31 has a pivot to pivotally connect the first pivot portion 21, and one side of the base 31 is locked to a linkage One end of the rod 314 and the linkage rod 314 is fixedly connected to the fixed casing 111, so that the base 31 and the fixed casing 111 rotate synchronously. The end portion adjacent to the base 31 has a guide surface 315 which is a flat surface extending downwardly away from the end portion for receiving the limit portion 343 of the support plate 341 in an offset state. There is also a support surface 316 adjacent to the end of the base 31. The support surface 316 is adjacent to the guide surface 315 and forms an angle with the guide surface 315. The support surface 316 is inclined away from the end of the guide surface 315 and upward The extended plane is provided for the limiting portion 343 of the offset support plate 341 to bear against. In addition, the guiding surface 315 and the supporting surface 316 can also be formed at one end of the linking rod 314, and can also be used for the limiting portion 343 of the supporting plate 341 to bear against the pressure bearing to increase the supporting effect and share the load. In addition, both sides of the base 31 have opposite and stepped upper rails (312, 312'), a groove 313 is formed between the two upper rails (312, 312'), and an abutment recess is formed between the two sides of one end of the base 31 The hollow groove 317 of the groove 313 is used for passing and moving a part of the linkage plate 35.

The first slider 32 and the second slider 33 are located on both sides of the base 31, respectively. The side of the first slider 32 adjacent to the base 31 and the side of the second slider 33 adjacent to the base 31 are respectively stepped The rails (321,331) and the two lower rails (321,331) respectively overlap two upper rails (312,312'), so that the first slider 32 and the second slider 33 are connected to both sides of the base 31 in a relatively slidable manner . The first slider 32 is upwardly connected to the flat plate 114 of the movable housing 112. One end of the first slider 32 has an inclined surface 322, an arc-shaped guide groove is recessed inwardly from the inclined surface 322, and the arc-shaped guide groove is formed in the first slider On one side of 32, the arc-shaped guide groove serves as the first connecting portion 323. In addition, a concave long groove 324 is recessed in the bottom surface of the first slider 32 to The arc-shaped guide grooves serving as the first connecting portion 323 communicate with each other.

The supporting plate body 34 includes a supporting plate 341 and a connecting plate 342. The supporting plate 341 is an elongated plate body, and one end of the supporting plate 341 extending horizontally is used as a limiting portion 343 for the overlapping to be located on the base 2 On the first stopper 23; one end of the connecting plate 342 is a plate, which is connected to the bottom surface of one side of the supporting plate 341 by screws. During implementation, the supporting plate 341 and the connecting plate 342 are not limited to be removable The structure can also be combined into an integrally formed structure to omit the screwing process between the two plates; the other end of the connecting plate 342 has an arc portion 344 corresponding to the first slider 32 accommodated in the first In a connecting portion 323, the supporting plate 34 swings relative to the first slider 32 in an arc shape. The arc-shaped portion 344 extends down a lug 347 and is introduced into the accommodating long slot 324 of the first slider 32; a return member 345 is a tension spring, and one end of the tension spring is connected to the lug of the arc-shaped portion 334 347, the other end of the tension spring is connected to the bottom of the first slider 32, that is, it is fixedly connected to one side of the accommodating long groove 324 in a direction away from the ear piece 337, which is beneficial to form an effective torque in a limited space. For pulling the entire support plate body 34, the above-mentioned arc-shaped portion 344 and the return member 345 are combined to form a second connecting portion 346.

The linking plate 35 includes a first linking piece 351 and a second linking piece 352 stacked on top of each other. A first shaft 353 is provided at one end of the first linking piece 351, and a second shaft 354 is disposed at one end of the second linking piece 352. The first shaft 353 and the second shaft 354 are respectively pivotally connected to the second pivot portion 22 of the base 2, and through the stacked structure of the first linking piece 351 and the second linking piece 352, the linking plate 35 can be operated more stably. One end of the linking plate 35 is pivotally connected to the second pivoting portion 22 of the base 2, and the other end of the linking plate 35 is pivotally connected to a first rack 355. The bottom of the first rack 355 has a guide post 356, and the guide post 356 faces A guide function is formed by penetrating into the long guide groove 311 of the base 31, so that the first rack 355 is limited to the base 31 in a relatively movable manner.

The first rack 355, the second rack 36, the intermediate gear 37, and the telescopic module 38 are accommodated in the groove 313 of the base 31 in parallel, and the first linking piece 351 and the second linking piece that are stacked on top of each other 352 is accommodated in the hollow groove 317 of the base 31 for the laminated structure of the interlocking plate 35 to operate and protect. Among them, the second rack 36 is upwardly connected to the flat plate 114 of the movable housing 112, and the intermediate gear 37 has different gear ratios The first gear portion 371 and the second gear portion 372. In this embodiment, the gear diameter of the first gear portion 371 is smaller than the gear diameter of the second gear portion 372, and the number of teeth of the first gear portion 371 is smaller than that of the second gear portion 372 For the number of teeth, the first gear portion 371 is engaged with the first rack 355, and the second gear portion 372 is engaged with the second rack 36. The telescopic module 38 includes a positioning block 381, a compression spring 382, and a moving member 383. The positioning block 381 is connected downward to the base 31. A positioning rod 384 protrudes from one end of the positioning block 381 to penetrate and position the compression spring 382; the moving element 383 is a rectangular body. The moving element 383 is connected upward to the flat plate 114 of the movable housing 112. One end of the moving element 383 has a positioning space 385 for inserting and limiting the positioning rod 384.

Thereby, when the first housing 11 and the second housing 12 are relatively reversed and unfolded to show a flat state, the limit portion 343 at one end of the support plate 341 can be guided by the guide surface 315 to smoothly overlap It is limited to the first stop portion 23 of the base 2, so as to restrict the movement of the support plate body 34, so that the two support plates 341 support the flexible display 13 upward. At this time, the return members 345 of the first sliding mechanism 3 and the second sliding mechanism 3'are respectively stretched to accumulate the elastic force.

As shown in FIGS. 7-9, when the first casing 11 and the second casing 12 are relatively closed and closed to allow the two sets of fixed casings (111, 121) and movable casings (112, 122) to be separated from each other by the distance, Simultaneous actuation of the sliding mechanism 3 and the second sliding mechanism 3'and the elastic recovery of the two resetting members 345 can make the limiting portions 343 of the support plates 341 of the two sliding mechanisms and the base 2 respectively The first stop portion 23 and the second stop portion 26 slide relative to each other, so that the two limiting portions 343 are separated from the restrictions of the first stop portion 23 and the second stop portion 26 at the same time. In addition, the overall case is thin The structure can provide a limited space for the movement of each part. Therefore, in order to reduce the deviation of the two limiting parts 343 from being affected by the slight gap and the step difference, the guide surfaces 315 of the two sliding mechanisms are successively undertaken respectively And guide the two limiting portions 343, and allow the two support plate bodies 34 to continue to swing in an arc shape relative to the two first sliders 32, so that the two support plates 341 are offset by an angle, and will support Lean on the supporting surfaces 316 of the two sets of sliding mechanisms, and simultaneously press the two connecting plates 342 against the inclined surface 322 at the end of the first slider 32 to form multiple contact surfaces to share the load and evenly support, and make the linkage plate The laminated structure of 35 can lie flat in the hollow groove 317 to be close to the fixed shell The wall surface of the body (111, 121) prevents the interference plate 35 from interfering when the support plate 341 bears. Since the two supporting plates 341 of the two sliding mechanisms are relatively offset by an angle, an accommodating space 14 is formed to accommodate the middle curved portion of the flexible display 13.

Therefore, the present invention has the following advantages:

1. The present invention can effectively thin the whole of the "compensation folding path mechanism" through the connection relationship and structural characteristics between the first slider, the support plate body, the linkage plate and a gear module, and can further simplify the use of parts to reduce Cost of production. The second connecting portion of the support plate body swings relative to the first connecting portion of the first slider in an arc shape to produce a free swinging effect similar to a shaftless seesaw, that is, it does not need to be pivotally connected with a physical axis as in conventional technology. Helps to reduce the volume and thickness, in favor of the effect of thinning, so that when the whole is bent, it can make a room to accommodate the curved middle part of the flexible display, and when the whole is flat, it can be flexible The flattened middle part of the display forms a stable support.

2. In the present invention, the intermediate gears with different gear ratios are respectively engaged with the first rack and the second rack, so that the fixed casing connected to the first rack and the movable casing connected to the second rack can form different movements Speed, to avoid pulling or pushing the flexible display by the force of the folding action, can not only achieve the effect of compensating for the difference in the folding path, but also effectively extend the service life of the flexible display.

3. The present invention uses the elastic action of the compression spring of a telescopic module to make the fixed shell and the movable shell form a reverse force, so that the first rack and the second rack can continuously resist The first gear portion and the second gear portion of the intermediate gear are pressed, so that the gap between the teeth can be effectively eliminated to maintain a stable transmission effect.

4. The present invention uses hollowed grooves between the two sides of the base for placing the linking plate on the top and bottom stacking structure to facilitate movement and to facilitate the linkage of the internal parts after the overall thinning; and the same base The two pivot points on the axis and the guide post of the first rack match the long guide of the base Technical means such as grooves can help stabilize the action of the first rack and the expansion module.

Although the present invention discloses preferred specific embodiments for achieving the above purpose, it is not intended to limit the structural features of the present invention. Any person of ordinary knowledge in the technical field should know that, under the technical spirit of the present invention, any Changes and modifications are possible, and are covered by the patent application scope of the invention.

3: The first sliding mechanism

31: Base

311: Long guide groove

312,312’: Go on track

313: Groove

314: linkage

315: Guide surface

316: Support surface

317: Hollow groove

32: First slider

321,331: Lower track

322: Bevel

323: First connection

33: Second slider

34: Support plate

342: connection board

344: Arc

345: Reset piece

346: Second connection

347: ear piece

35: linkage board

351: First Linkage

352: Second Linkage

353: First axis

354: Second axis

355: first rack

356: Guide post

36: Second rack

37: intermediate gear

371: The first gear part

372: Second gear part

38: Telescopic module

381: positioning block

382: Compression spring

383: Moving parts

384: Positioning rod

385: Positioning space

Claims (14)

A rotating shaft module of a folding device, one end surface of which simultaneously contacts a flexible display to bend the flexible display relatively, and the other end surface of the rotating shaft module are respectively connected to a first housing and a second housing, For linking the first shell and the second shell, the first shell and the second shell are relatively turned over; the first shell includes a fixed shell and one of which can expand and contract relative to the fixed shell Movable housing; the rotating shaft module includes a base and a first sliding mechanism, one end of the base has a first pivotal portion, a second pivotal portion and a first stop portion; the first The sliding mechanism includes: a base connected to the fixed housing, one end of the base is pivotally connected to the first pivoted portion; a first slider connected to the movable housing, one side of the first slider It is connected to one side of the base in a relatively slidable manner. The first slider has a first connecting portion; a supporting plate body has a limiting portion at one end for limiting the first stop portion , One side of the support plate body has a second connection portion, the second connection portion is connected to the first connection portion for the support plate body to swing relative to the first slider arc; a linkage plate, one end of which is pivoted Connected to the second pivotal portion, the other end of the linkage plate has a first rack, which is limited to the base in a relatively movable manner; a second rack is connected to the movable shell Body; and an intermediate gear having a first gear portion and a second gear portion with different gear ratios, the first gear portion teeth engage the first rack, and the second gear portion teeth engage the second rack . The hinge module of a folding device as described in item 1 of the scope of the patent application, wherein the first stop portion is a stepped surface formed at one end of the base for restricting the support plate body from being shifted by an angle. The hinge module of the folding device as described in item 1 of the scope of the patent application, wherein the end portion adjacent to the base has a guide surface that extends obliquely downward in a direction away from the end portion to make. The hinge module of the folding device as described in item 3 of the patent scope, where The end portion of the base further has a support surface, the support surface is adjacent to the guide surface and forms an angle with the guide surface, so that the limiting portion of the support plate body after offset is pressed against and supported. The hinge module of a folding device as described in item 1 of the patent application range, wherein one end of the first slider has a slope, and the first connecting portion is formed on one side of the first slider, and An arc-shaped guide groove recessed inwards from the inclined surface; the second connecting portion includes an arc-shaped portion and a resetting member, the arc-shaped portion is formed on one side of the supporting plate body, and the two ends of the resetting member are respectively connected The arc-shaped part and the first slider are provided for the arc-shaped part to be accommodated in the arc-shaped guide groove in a sliding manner relative to the arc-shaped part. The hinge module of the folding device as described in item 5 of the patent application scope, wherein the supporting plate body includes a supporting plate and a connecting plate, one end of the connecting plate is connected to the supporting plate, and the other end of the connecting plate has The arc-shaped portion of the second connection portion. The hinge module of the folding device as described in item 1 of the patent application scope, wherein the linking plate includes a first linking piece and a second linking piece stacked on top of each other, and one end of the first linking piece has a first linking piece A shaft, one end of the second linking piece has a second shaft, the first shaft and the second shaft are respectively pivotally connected to the second pivoting portion; a hollow groove is formed between the two sides of the base for stacking up and down The first linked piece and the second linked piece pass and move. The hinge module of the folding device as described in item 1 or 7 of the patent application scope, wherein the other end of the linkage plate is pivotally connected to one end of the first rack. The hinge module of the folding device as described in item 8 of the patent application scope, wherein the base has a long guide slot, the bottom of the first rack has a guide post, and the guide post penetrates the long guide slot Inside, the first rack is limited to the base in a relatively movable manner. The hinge module of the folding device as described in item 1 of the patent application range, wherein the gear diameter of the first gear portion is smaller than the gear diameter of the second gear portion. The hinge module of the folding device as described in item 10 of the patent application range, wherein the number of teeth of the first gear part is less than the number of teeth of the second gear part. The hinge module of the folding device as described in item 1 of the patent application scope further includes a second slider, the second slider is connected to the movable housing, and one side of the second slider is Relatively sliding to the other side of the base. The hinge module of the folding device as described in item 1, 10 or 11 of the patent application scope further includes a telescopic module including a positioning block, a compression spring and a moving part, the positioning block Connected to the base, the positioning block has a positioning rod for passing through to locate the compression spring, one end of the moving member has a positioning space for inserting the positioning rod, and the moving member is connected to the movable housing. The hinge module of the folding device as described in item 1 of the patent application scope, wherein the other end of the base further has a third pivotal portion, a fourth pivotal portion and a second stop portion, the The rotating shaft module further includes a second sliding mechanism, the second sliding mechanism and the first sliding mechanism have corresponding structures, and are symmetrically disposed at both ends of the base.

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