TWM537375U - Flexible display equipment and supporting device - Google Patents

Description

Flexible display device and support device

The present invention relates to a display device, and also relates to a flexible display device and a support device.

When the existing supporting device is bent, since the total length of the pivot module in the supporting device is maintained before and after bending, the plate mounted on the inner side of the supporting device may be compressed, which may cause deformation of the plate. . That is to say, when the flexible display screen is mounted on the existing supporting device and bent, the soft display screen mounted on the inner side of the supporting device is easily compressed by the supporting device, which may cause damage to the flexible display screen.

Therefore, the creator felt that the above defects could be improved. He devoted himself to research and cooperated with the application of scientific principles, and finally proposed a creation that is reasonable in design and effective in improving the above defects.

The present invention provides a flexible display device and a supporting device for solving the problems that may occur in the existing supporting device.

The present invention discloses a flexible display device, comprising: two supporting devices, each comprising: a pivot module comprising: a plurality of pivot axes arranged in parallel with each other; and a plurality of torsion units arranged in a plurality of a plurality of the pivoting units, and each of the plurality of torsion units has a positioning portion on opposite sides; and two buffer modules respectively located on opposite outer sides of the column of the pivots and respectively mounted on the two a positioning portion, each of the buffer modules includes: an outer connector fixed to the corresponding positioning portion; an inner connector that is slidably disposed on the outer connector; a driving member having the opposite a first end portion and a second end portion of the side, the first end portion is sleeved on one of the plurality of pivots, and the second end portion is movably disposed on the outer connector; a linkage member movably mounted to the outer connector, and the linkage member is coupled to the inner connector and the second end portion; wherein the hinge module can be in a plurality of the pivots The at least one pivot is an axis and is operated between a flattened position and an inwardly folded position; when the pivot module is in the flattened position, the supporting device is in a flat shape; the pivot module is located in the In the inner folded position, the supporting device is curved, and the two inner connecting members are located inside the supporting device; and the plurality of the torque units are configured to provide a corresponding torque to make the pivot mold The group can be stopped at any time between the flattened position and the inner folded position; when the pivot module is actuated from the flattened position toward the inner folded position, in each of the buffer modules, The second end of the driving member drives the inner connecting member through the linking member to make The inner connector slides away from the plurality of pivots with respect to the outer connector; a carrier plate fixed to the inner connectors of the two supporting devices; and a flexible display screen mounted to the carrier plate .

The present invention also discloses a supporting device, comprising: a pivot module comprising: a plurality of pivots arranged in parallel with each other; and a plurality of torsion units, sleeved on the plurality of pivots, and a plurality of The torsion unit has a positioning portion on opposite sides; and two buffer modules respectively located on opposite outer sides of the column of the pivot and respectively mounted on the two positioning portions, each of the buffering modes The set includes: an outer member fixed to the corresponding positioning portion; an inner connecting member slidably disposed on the outer connecting member; a driving member having a first end portion and a first side on the opposite side a two-end portion, the first end portion is sleeved on one of the plurality of pivots, the second end portion is movably disposed on the outer connector; and a linkage member is movably mounted on the An outer member, wherein the linkage member is coupled to the inner end member and the second end portion; wherein the hinge module is axially centered on at least one of the plurality of pivots Actuating between the flattened position and an in-fold position; the hub module is located When the said flattened position, said support means has a plate form; located in the hub of the module In the inwardly folded position, the supporting device is curved, and two of the inner connecting members are located inside the supporting device; and the plurality of the torsion units are configured to provide a corresponding torque so that the hub The module can be stopped at any time between the flattened position and the inner folded position; when the pivot module is actuated from the flattened position toward the inner folded position, in each of the buffer modules The second end of the driving member drives the inner connecting member via the linking member to slide the inner connecting member in a direction away from the plurality of pivots with respect to the outer connecting member.

In summary, the flexible display device and the supporting device disclosed in the embodiment of the present invention can be moved by the inner connecting member relative to the outer connecting member when the pivoting module is bent, so as to avoid pressing or compressing the inner component of the pivot module (for example). : Soft display or carrier board). Therefore, the appearance of the flexible display screen of the flexible display device can be consistent with the hinge module, so that the flexible display screen can be effectively supported by the support device.

In order to further understand the features and technical contents of the present invention, please refer to the following detailed description of the present invention and the accompanying drawings, but the drawings are only for reference and description, and are not intended to limit the scope of the present invention.

100‧‧‧Soft display device

1‧‧‧Support device

11‧‧‧ Hub Module

111‧‧‧ pivot

112‧‧‧Torque unit

1121‧‧‧ Positioning Department

113‧‧‧Link unit

12‧‧‧ Buffer module

121‧‧‧External parts

1211‧‧‧ board

1212‧‧‧Flange

1213‧‧‧Fixed Department

1214‧‧‧ Guide pin

1215‧‧‧ pivotal department

1216‧‧‧Support board

122‧‧‧Interconnects

1221‧‧‧Connecting plate

1222‧‧‧ Block

1223‧‧‧Track hole

1224‧‧‧Rack

1225‧‧‧ Track slot

123‧‧‧ Drives

1231‧‧‧

1232‧‧‧ Slider

1233‧‧‧First end

1234‧‧‧ Ontology

1235‧‧‧Bump

1236‧‧‧second end

124‧‧‧ linkages

1241‧‧‧ Gears

1242‧‧‧ Connecting rod

1243‧‧‧Long hole

2‧‧‧Connecting parts

3‧‧‧Connecting tube

4‧‧‧Bearing board

41‧‧‧metal layer

42‧‧‧Cushion

5‧‧‧Soft display

FIG. 1A is a perspective view of the creation of a flexible display device.

FIG. 1B is a partially enlarged plan view of FIG. 1A.

2A is a perspective view of the flexible display device of FIG. 1A after being bent 180 degrees.

2B is a partially enlarged plan view of FIG. 2A.

Fig. 3 is an exploded perspective view of Fig. 1A (the soft display screen is omitted).

4 is an exploded perspective view of another perspective of FIG. 1A (the soft display screen is omitted).

FIG. 5 is a perspective view of the creation support device.

Figure 6 is an exploded perspective view of Figure 5.

Figure 7 is an exploded perspective view of another perspective of Figure 5.

Please refer to FIG. 1A to FIG. 7 . For the embodiment of the present invention, it should be noted that the related quantity and appearance mentioned in the embodiment are only used to specifically describe the implementation manner of the present invention. To understand the content of this creation, not to limit the scope of this creation.

As shown in FIG. 1A to FIG. 4 , the present embodiment discloses a flexible display device 100 including two supporting devices 1 , two connecting members 2 connecting the two supporting devices 1 , a plurality of connecting tubes 3 , and a carrying board 4 . And a soft display 5. The carrier board 4 is mounted on one side of the supporting device 1, the connecting member 2, and the connecting tube 3 (the bottom side in FIG. 1A), and the flexible display screen 5 is disposed on the carrying board 4. In particular, the present embodiment refers to a soft display device 100 that can be bent inwardly to 180 degrees (as shown in FIG. 2A ) without damage to the soft display screen 5 corresponding to the portion of the support device 1 , but this creation does not Limited by this.

It should be noted that the interlocking relationship in the flexible display device 100 is a relative motion, but in the drawings of the present embodiment, a description will be made in a manner of fixing a part of the member to facilitate understanding of the present creation. Furthermore, although the present embodiment is described with respect to the application of the support device 1 to the flexible display device 100, the support device 1 can be applied to other devices, and is not limited to the flexible display device 100.

Hereinafter, the description will be given of the respective component configurations when the flexible display device 100 is in the form of a flat plate, and then the respective component connection relationships of the flexible display device 100 and the respective component actuation relationships when the flexible display device 100 is bent will be described as appropriate. Wherein, since the configurations of the two supporting devices 1 are substantially the same or symmetrical, in order to avoid redundancy, only the detailed configuration of one of the supporting devices 1 will be described below.

As shown in FIG. 5 , the support device 1 includes a hinge module 11 and two buffer modules 12 mounted on opposite sides of the hinge module 11 . The maximum height of the hub module 11 in the embodiment is about 2 mm, and the pivot module 11 includes a plurality of pivots 111 arranged in parallel with each other, and is sleeved on the plurality of pivots. The plurality of torsion units 112 of the shaft 111 and the plurality of coupling units 113. The pivot 111 is in the real In the example, there are twelve round rods and a total of twelve, but the creation is not limited thereto. The connecting unit 113 may be any combination of a single piece and a plurality of stacked sheets, and each of the connecting units 113 is sleeved on two adjacent pivots that are different from each other. 111.

The torsion unit 112 can be any combination of a single gear, a plurality of stacked teeth, and a plurality of stacked spacers, and each of the torsion units 112 can be sleeved on a single pivot 111 or two The pivots 111, and in the present embodiment, any two adjacent torsion units 112 in the same row are in mesh with each other. Furthermore, the torsion units 112 of the present embodiment are arranged in a plurality of rows, and at least one of the plurality of torsion units 112 of the plurality of torsion units 112 is located on the opposite side and each has a positioning portion 1121 of a strip shape.

In the present embodiment, the two torsion units 112 that are located on the same row and have the positioning portion 1121 are respectively disposed on the outermost two pivots 111 of the column pivot 111, and the two positioning portions 1121 Located outside the column pivot 111. Specifically, the torsion unit 112 of the present embodiment has a total of six positioning portions 1121 for respectively connecting the two hub modules 11 , but is not limited thereto. Furthermore, in one of the adjacent rows of the torsion units 112, the torsion unit 112 having no positioning portion 1121 and sleeved on the two pivots 111 is included, and the two pivot shafts 111 are respectively disposed in the other column. Two intermeshing torque units 112.

Thereby, the pivot module 11 can be centered on at least one of the pivots 111 of the plurality of pivots 111 in a flattened position (as shown in FIGS. 1A and 1B) and an inwardly folded position (as shown in the figure). Actuated between 2A and 2B). Wherein, when the pivot module 11 is in the flattened position, the support device 1 has a flat shape; when the hinge module 11 is in the inner folded position, the support device 1 is curved, and the two buffer modules 12 ( The inner connector 122) is located inside the support device 1. In the present embodiment, the position of the hinge module 11 bent to 180 degrees as shown in FIG. 2A is defined as the above-mentioned inner folding position, but is not limited thereto. Furthermore, when the bending module 11 is flexed, the corresponding torque is provided by the torque unit 112 or/and the connecting unit 113, so that the pivot module 11 can be flattened. Any position between the position and the in-fold position stops at any time.

As shown in FIG. 5 , the two buffer modules 12 are respectively located on opposite outer sides of the column pivots 111 , and the two buffer modules 12 are respectively mounted on the positioning portions 1121 located on opposite sides of the plurality of torsion units 112 . . In the above, since the configurations of the two buffer modules 12 are substantially the same or symmetrical, in order to avoid redundancy, only the detailed configuration of one of the buffer modules 12 will be described below.

As shown in FIG. 6 and FIG. 7 , the buffer module 12 includes an external component 121 fixed to the corresponding positioning portion 1121 , an inner connector 122 slidably disposed on the outer connector 121 , and mounted on the hinge module 11 . The two driving members 123 are movably disposed on the outer connector 121 and the two linking members 124 movably mounted on the outer connector 121. The outer connector 121 and the inner connector 122 can maintain a relative position when the driving member 123 and the linking member 124 are stationary, and when the driving member 123 and the linking member 124 are actuated, by the cooperation of the driving member 123 and the linking member 124. Produce relative movement.

In more detail, the outer connector 121 is provided for a cover plate (not shown), thereby shielding the two supporting devices 1, the connecting member 2 and the connecting tube 3 through the covering plate to avoid the above two supports. The device 1, the connector 2, and the connecting tube 3 are injured to the user. The outer connector 121 has a plate body 1211, two flanges 1212 extending from the opposite ends of the plate body 1211 toward the carrier plate 4, and at least one fixing portion 1213 formed on the plate body 1211 (eg, opening) At least one guiding pin 1214 and a plurality of pivoting portions 1215 disposed on the plate body 1211, and two supporting plates 1216 disposed on the plate body 1211. Moreover, the number of the fixing portions 1213 is equivalent to the corresponding number of the positioning portions 1121 in the embodiment, and the outer connecting member 121 is fixed to the corresponding positioning portion 1121 of the hinge module 11 by the fixing portion 1213.

The inner connector 122 has a connecting plate 1221 and two blocks 1222 attached to the two ends of the connecting plate 1221. The inner connecting member 122 can be fixed to the carrying board 4 through the connecting plate 1221, and the connecting board 1221 is formed with at least one elongated shape. The track hole 1223, and the guide pin 1214 of the outer piece 121 is movably disposed through the track hole 1223. The two blocks 1222 are respectively provided with a rack 1224 adjacent to the connecting plate 1221 and facing each other, that is, the two racks 1224 face each other. Each of the blocks 1222 is formed with a track groove 1225 at a portion away from the connecting plate 1221, and two flanges 1212 of the outer member 121 are respectively inserted into the two track grooves 1225.

However, in the embodiment, the two flanges 1212 are respectively inserted into the two track grooves 1225. However, in an embodiment not shown, the outer connector 121 may also form only one flange. 1212, and the inner member 122 forms a track groove 1225 corresponding to the flange 1212.

The two driving members 123 respectively cooperate with the two linking members 124, so that the two driving members 123 can respectively drive the two racks 1224 of the inner connecting member 122 through the two linking members 124. . Each of the driving members 123 has a first end portion 1233 and a second end portion 1236 on opposite sides, and the first end portions 1233 of the two driving members 123 are respectively sleeved in the plurality of the pivot shafts 111. The second ends 1236 of the two driving members 123 are movably disposed on the plate body 1211 of the outer connector 121 at opposite ends of a pivot shaft 111. The two linking members 124 are respectively movably mounted on the two L-shaped supporting plates 1216 of the outer connecting member 121, and each of the linking members 124 is coupled to the second connecting member 122 and the second matching driving member 123. End 1236.

Furthermore, since the structure and actuation of the two driving members 123 and the two interlocking members 124 are substantially the same or symmetrical, only a group of the driving members 123 and the linking members 124 that are matched with each other will be described below as an example. In addition, in another embodiment, the number of the driving members 123 and the linking members 124 of each of the buffer modules 12 may be one and each other.

In more detail, the driving member 123 includes a curved bar 1231 and a slider 1232 pivotally connected to the curved bar 1231. One end of the curved bar 1231 is defined as the above One end portion 1233, and the other end portion of the curved rod 1231 is pivotally connected to the slider 1232. The pivot shaft 111 of the first end portion 1233 is different from the pivot shaft 111 of the torque unit 112 having the positioning portion 1121, and the first end portion 1233 is sleeved in the embodiment. The pivot shaft 111 is provided with at least one pivot 111 between the pivot shaft 111 that is sleeved by the torsion unit 112 having the positioning portion 1121, but the present invention is not limited thereto.

The slider 1232 has a body 1234 and a protrusion 1235 extending from the body 1234 and the second end 1236. The body 1234 is slidably disposed on the plate body 1211 of the outer connector 121, and the body 1234 is abutted against the adjacent positioning portion 1121 and can move along the positioning portion 1121. The studs 1235 are disposed on (the elongated holes of the support plate 1216 of the curved rod 1231 and the corresponding outer member 121), and the studs 1235 are movable relative to the support plate 1216. The second end portion 1236 is columnar and substantially perpendicular to the protrusion 1235 and the plate body 1211 , and the second end portion 1236 is disposed through the linking member 124 .

The linkage member 124 has a gear 1241 and a connecting rod 1242. The gear 1241 and the connecting rod 1242 are respectively pivotally disposed on two corresponding pivoting portions 1215 of the outer connector 121. The gear 1241 is a spur gear in this embodiment, and the gear 1241 is engaged with the corresponding rack 1224 of the inner joint 122. The connecting rod 1242 has an elongated shape and is toothed at one end to be engaged with the gear 1241, and the other end of the connecting rod 1242 is coupled to the second end 1236 of the driving member 123. Furthermore, the connecting rod 1242 is formed with an elongated hole 1243 and is sleeved on the second end portion 1236 through the elongated hole 1243 so that the second end portion 1236 can push against the inner wall of the elongated hole 1243. The link 1242 pivots relative to the outer member 121.

Thereby, when the pivot module 11 is bent (please refer to FIG. 1B and FIG. 2B and timely refer to FIG. 6 and FIG. 7 ), the curved rod 1231 of the driving member 123 causes the slider 1232 to be at the outer connector 121 . Moving up, while the moving slider 1232 is pushed by the second end 1236 The connecting rod 1242 is pivoted to drive the gear 1241 so that the rack 1224 is interlocked by the gear 1241 to slide the inner connecting member 122 relative to the outer connecting member 121.

That is, when the pivot module 11 is actuated from the flattened position (as shown in FIGS. 1A and 1B) toward the inwardly folded position (as shown in FIGS. 2A and 2B), in each of the buffer modules 12 The second end portion 1236 of the driving member 123 drives the inner connecting member 122 through the linking member 124 to slide the inner connecting member 122 relative to the outer connecting member 121 in a direction away from the plurality of the pivot shafts 111. The sliding distance of the inner connecting member 122 relative to the outer connecting member 121 is preferably proportional to the bending amplitude of the hinge module 11, but is not limited thereto.

Wherein, as shown in FIG. 1B, when the guiding pin 1214 is relatively moved to one of the two ends of the track hole 1223 (such as the right end of the track hole 1223 in FIG. 1B), the guiding pin 1214 and the track hole 1223 are restrained. And the guide pin 1214 will stop at the corresponding link 1242, so that the external member 121 cannot be further moved to the left relative to the inner member 122, so the hinge module 11 will be maintained in the flattened position. As shown in FIG. 2B, when the guide pin 1214 is relatively moved to the other end of the track hole 1223, the other end (such as the left end of the track hole 1223 in FIG. 2B), the guide pin 1214 and the track hole 1223 are restrained. Therefore, the external member 121 cannot be further moved to the right relative to the inner member 122, so the hinge module 11 is maintained at the inner folded position.

3 and 4, the connecting member 2 is an elongated piece, and each connecting piece 2 is a two connecting member 122 that is fixedly adjacent but belongs to different supporting devices 1 (such as the upper left in FIG. 3). The side inner connecting member 122 and the lower left inner connecting member 122), one ends of the plurality of connecting tubes 3 (such as the top end in FIG. 3) are respectively sleeved on the plurality of pivots 111 of one of the supporting devices 1, the plurality of The other ends of the connecting pipes 3 (such as the top end in FIG. 3) are respectively sleeved to the plurality of pivots 111 of the other supporting device 1. Thereby, by providing the above-described connecting member 2 and the connecting pipe 3, it is possible to assist the two supporting devices 1 to operate more smoothly.

The carrier plate 4 is (the connecting plate 1221) fixed to the inner connector 122 of the two supporting devices 1. The carrier board 4 includes a metal layer 41 and a cushion layer 42. The metal layer 41 is fixed to the connecting member 122 of the two supporting devices 1 and is installed with the softness. The display screen 5 is sandwiched between the metal layer 41 and the two support devices 1.

In addition, although the present embodiment is described as an example in which the flexible display panel 5 is attached to the carrier board 4, it is not limited thereto. For example, in another embodiment not shown, the flexible display screen 5 also has a connecting plate 1221 that can be directly fixed to the inner joints of the two supporting devices 1.

As shown in FIG. 1A to FIG. 2B , the flexible display device 100 disclosed in the present embodiment can be relatively through the inner connector 122 when the pivot module 11 is bent between the flattened position and the inner folded position. The external member 121 is moved to prevent the hinge module 11 from compressing or compressing the flexible display screen 5 (or the carrier board 4). Therefore, the appearance of the flexible display screen 5 can be consistent with the hinge module 11 so that the flexible display screen 5 can be effectively supported by the two supporting devices 1 described above.

Furthermore, the flexible display device 100 is designed such that the pivot module 11 of each support device 1 is difficult to move from the flattened position toward the non-inwardly folded position, thereby avoiding the soft display. 5 (or the carrier plate 4) is folded outward to cause damage.

In addition, each of the above-mentioned pivot modules 11 is C-shaped when located in the inner folded position (as shown in FIG. 2A ), and corresponds to the soft display screen 5 of each of the plurality of connecting modules 3 and the plurality of connecting tubes 3 The inward bending is C-shaped, and the portions of the flexible display screen 5 corresponding to the plurality of buffer modules 12 and the two connecting members 2 are parallel to each other.

The above description is only the preferred and feasible embodiment of the present invention, and is not intended to limit the scope of protection of the present invention. All the equivalent changes and modifications made by the scope of the present application should be covered by the present invention.

1‧‧‧Support device

11‧‧‧ Hub Module

111‧‧‧ pivot

1121‧‧‧ Positioning Department

12‧‧‧ Buffer module

121‧‧‧External parts

1211‧‧‧ board

1212‧‧‧Flange

1214‧‧‧ Guide pin

1215‧‧‧ pivotal department

1216‧‧‧Support board

122‧‧‧Interconnects

1221‧‧‧Connecting plate

1222‧‧‧ Block

1223‧‧‧Track hole

1225‧‧‧ Track slot

123‧‧‧ Drives

1231‧‧‧

1232‧‧‧ Slider

1233‧‧‧First end

1234‧‧‧ Ontology

1235‧‧‧Bump

1236‧‧‧second end

124‧‧‧ linkages

1241‧‧‧ Gears

1242‧‧‧ Connecting rod

1243‧‧‧Long hole

Claims (10)

A flexible display device comprising: two supporting devices, each comprising: a pivot module comprising: a plurality of pivots arranged in parallel with each other; and a plurality of torsion units sleeved on the plurality of pivots And the plurality of torsion units each have a positioning portion on opposite sides; and two buffer modules respectively located on opposite outer sides of the column of the pivots and respectively mounted on the two positioning portions, each The buffer module includes: an outer connector fixed to the corresponding positioning portion; an inner connector that is slidably disposed on the outer connector; and a driving member having a first end on the opposite side And a second end portion, the first end portion is sleeved on one of the plurality of pivots, the second end portion is movably disposed on the outer connector; and a linkage member is movably Mounted on the outer connector, and the linkage is coupled to the inner joint and the second end; wherein the pivot module can be pivoted by at least one of the plurality of pivots The heart moves between a flattened position and an inwardly folded position; the hub When the group is in the flattened position, the supporting device has a flat shape; when the hinge module is in the inner folded position, the supporting device is curved, and two of the connecting members are located at the support An inner side of the device; a plurality of the torsion units are configured to provide a corresponding torsion force, so that the hub module can be stopped at any time between the flattened position and the inwardly folded position; when the hub module In the buffering module, the second end of the driving member drives the inner connecting member through the linking member, Sliding the inner connector relative to the outer connector in a direction away from the plurality of pivots; a carrier plate fixed to the inner connectors of the two support devices; A flexible display screen is mounted to the carrier board. The flexible display device of claim 1, wherein in each of the buffer modules of any one of the supporting devices, the inner connecting member is provided with a rack, and the linking member has a pivoting a gear of the outer member and a link, the gear meshes with the rack, one end of the link is engaged with the gear, and the other end of the link is coupled to the second end. The flexible display device of claim 2, wherein in each of the buffer modules of any one of the supporting devices, the connecting rod is formed with an elongated hole and is sleeved by the elongated hole The second end portion enables the second end portion to push against an inner wall of the elongated hole to pivot the link relative to the outer member. The flexible display device of claim 1, wherein in each of the buffer modules of any one of the supporting devices, the driving member comprises a curved lever and a slider pivotally connected to the curved lever The curved rod has the first end, and the slider has the second end. The flexible display device of claim 1, wherein in each of the buffer modules of any one of the supporting devices, the inner connecting member is formed with a track groove, and the outer connecting member is formed with a flange, and The flange is inserted into the track groove. The flexible display device of claim 1, wherein in any one of the supporting devices, the inner connecting member of each of the buffer modules is formed with an elongated track hole and on the outer connector. a guiding pin movably disposed through the track hole, the hub module being maintained at the exhibition when the guiding pin is relatively moved to one end of the two ends of the track hole Flat position. The flexible display device according to any one of claims 1 to 6, further comprising two connecting members adjacent to but different from the two connecting members of the supporting device as one of the connecting members Connected to each other. The flexible display device of claim 7, further comprising a plurality of connecting tubes, one end of each of the connecting tubes being respectively sleeved to the plurality of the pivots of one of the supporting devices, and the plurality of The other end of the connecting pipe is respectively sleeved therein A plurality of said pivots of the other of said support means. The flexible display device according to any one of claims 1 to 6, wherein the carrier board comprises a metal layer and a cushion layer, the metal layer being fixed to the inner joints of the two supporting devices and The flexible display screen is mounted, and the cushion layer is sandwiched between the metal layer and the two supporting devices. A support device comprising: a pivot module comprising: a plurality of pivots arranged in parallel with each other; and a plurality of torsion units sleeved on the plurality of pivots, and wherein the plurality of torsion units are opposite Each of the two sides has a positioning portion; and two buffer modules are respectively located on opposite outer sides of the column of the pivot and are respectively mounted on the two positioning portions, and each of the buffer modules comprises: an external connector And being fixed to the corresponding positioning portion; an inner connecting member is slidably disposed on the outer connecting member; and a driving member having a first end portion and a second end portion on opposite sides, The first end portion is sleeved on one of the plurality of pivots, the second end portion is movably disposed on the outer connector; and a linkage member is movably mounted to the outer connector, and the The linkage member is coupled to the inner end member and the second end portion; wherein the pivot module is capable of centering at least one of the pivot axes of the plurality of pivots in a flattened position and an inner portion Actuating between folding positions; when the hinge module is located in the flattened position The supporting device has a flat shape; when the hinge module is in the inner folded position, the supporting device is curved, and two of the connecting members are located inside the supporting device; and the plurality of the torsion units are used Providing a corresponding torque so that the hub module can be stopped at any time between the flattened position and the inner folded position; when the pivot module is folded from the flattened position toward the inner fold When the position is actuated, in each of the buffer modules, the second end of the driving member drives the inscribed via the linking member And sliding the inner joint relative to the outer joint in a direction away from the plurality of pivots.