TWM542920U - Hinge assembly and foldable display device using the same - Google Patents

Description

Pivot assembly and foldable display device using same

The present invention relates to a display device, and more particularly to a pivot assembly and a foldable display device using the same.

Please refer to FIG. 1. FIG. 1 is a schematic diagram of a conventional foldable display device 20a. The existing foldable display device includes a first plate member 500a and a second plate member 600a that are pivotally connected to each other and can be folded or unfolded, and the flexible display member 700a is disposed on the first plate member 500a and the second plate member 600a. On the front. When the first panel 500a and the second panel 600a are folded relative to each other, the flexible display member 700a is completely attached to the front surface 501 of the first panel 500a and the front surface 601 of the second panel 600a, and the flexible display member 700a The intermediate portion 730a will abut the side 502 of the first panel 500a and the side 602 of the second panel 600a. However, when the first plate member 500a and the second plate member 600a are unfolded in a plane, the side edges 502, 602 of the first plate member 500a and the second plate member 600a adjacent to each other may be closer, which may cause the flexible display member 700a. The intermediate portion 730a (i.e., the portion of the side edges 502, 602 that will be attached to the first panel 500a and the second panel 600a when the first panel 500a is folded relative to the second panel 600a) will swell. The flexible display member 700a is formed into an uneven flat surface. This can cause problems such as poor user experience, uneven image display, and poor life of flexible displays.

In addition, US Patent Publication No. US 2012/0096678, US 2011/0271486, US 2012/0042473, US 2013/0139355, US 2015/0345195, etc. all disclose a hinge having four gears, and these hinges are also They are all used in portable devices, but these hinges are still not suitable for flexible displays, because they still can't solve the problem of two plates (the base and the cover). When it becomes a plane, there is a problem of protrusion of the flexible display located in the middle of the two plates. U.S. Patent Publication No. US 2015/0362958 and US 2015/0267450 disclose another type of transmission between two spindle bodies, but still have no problem with the protrusion of the flexible display.

In view of this, the purpose of the present invention is to propose a pivot assembly and a foldable display device using the same, so that the flexible display member can be formed flat when the foldable display device is in the unfolded state. flat.

In an embodiment of the present invention, a pivot assembly includes a first pivot member and a second pivot member. The first pivot member includes a first main shaft body, a first sub-shaft body, a first main arm and a first sub-arm. The first main shaft body includes a first main gear, and the first main gear is circumferentially fixed to the first main shaft body. The first auxiliary shaft body includes a first auxiliary gear, and the first auxiliary gear is circumferentially fixed to the first auxiliary shaft, and the first auxiliary gear meshes with the first main gear. One end of the first main arm is connected to the first main shaft body and the other end is provided with a first main sliding unit. One end of the first sub-arm is pivotally connected to the first sub-shaft body and the other end is provided with a first sub-sliding unit, and the first sub-sliding unit and the first main sliding unit are slidably coupled to each other. The second pivot member is symmetrical to the first pivot member, and the second pivot member includes a second main shaft body, a second auxiliary shaft body, a second main arm and a second sub-arm. The second main shaft body includes a second main gear, and the second main gear is circumferentially fixed to the second main shaft body. The second auxiliary shaft body includes a second auxiliary gear, and the second auxiliary gear is circumferentially fixed to the second auxiliary shaft, and the second auxiliary gear meshes with the second primary gear and the first auxiliary gear, respectively. One end of the second main arm is coupled to the second main shaft body and the other end is provided with a second main sliding unit. One end of the second sub-arm is pivotally connected to the second sub-shaft body and the other end is provided with a second sub-sliding unit, and the second sub-sliding unit and the second main sliding unit are slidably coupled to each other.

In an embodiment of the present invention, a pivot assembly includes a bracket plate having a first pivot member and a second pivot member disposed thereon. The first pivot member includes a first main shaft body and a first sub-arm. The first main shaft body is pivotally disposed on the bracket plate, and the first main shaft body has a first main arm. The first main arm is connected to the first main shaft body at one end and the first main sliding unit is disposed at the other end. The first sub-arm is pivotally connected to the bracket plate at one end and the first sub-sliding unit is disposed at the other end, and the first sub-sliding unit and the first main sliding unit are slidably coupled to each other. The second pivot member includes a second main shaft body and a second sub-arm. The second main shaft body is pivotally disposed on the bracket plate, and the second main shaft body has a second main arm. The second main arm is connected to the second main shaft body at one end and the second main sliding unit is disposed at the other end. The second sub-arm is pivotally connected to the bracket plate at one end and the second sub-sliding unit is disposed at the other end, and the second sub-sliding unit and the second main sliding unit are slidably coupled to each other.

In an embodiment of the present invention, a foldable display device includes a first panel, a second panel, a pivot assembly and a flexible display member as described above. The first panel includes a first display surface and a first side on a side of the first display surface, and the second panel includes a second display surface and a second side on a side of the second display surface, the first side Adjacent to the second side. A first pivot member of the pivot assembly is coupled to the first plate member and a second pivot member of the pivot assembly is coupled to the second plate member. The flexible display member includes a first portion, a second portion and a middle portion, the first portion contacts the first display surface, the second portion contacts the second display surface, and the middle portion is located at the first side and the second portion Between the sides. When the first pivot member and the second pivot member are relatively pivoted to a closed angle, the first plate member and the second plate member are superposed on each other. When the first pivot member and the second pivot member are pivoted to an unfolding angle, the first plate member and the second plate member are respectively slid in opposite directions by a distance, so that the first side edge and the second side edge are spaced apart from each other. To flatten the first portion, the second portion, and the intermediate portion of the flexible display member.

In summary, according to the present invention, a pivot assembly and a foldable display device using the same, when the foldable display device is deployed, the first plate and the second plate When the foldable display device is fully deployed to form an unfolded state, the first side edge and the second side edge are spaced apart by a specific distance corresponding to the flexible display member. In the middle portion, this causes the flexible display member to form a flat surface, thereby avoiding the disadvantage that the intermediate portion of the prior art can be raised when the foldable display device is in the unfolded state.

Please refer to FIG. 2, FIG. 3 and FIG. 3A. FIG. 2 is a schematic diagram of a foldable display device 20 according to an embodiment of the present invention, and FIG. 3 is an exploded view of the foldable display device 20 according to an embodiment of the present invention. Schematic, FIG. 3A is an enlarged view of the pivot assembly of FIG. The foldable display device 20 includes a first panel 500, a second panel 600, a pivot assembly 10 and a flexible display member 700. The flexible display member 700 is, for example, a flexible light emitting diode panel (OLED), but is not limited thereto. As shown in FIG. 3, the first panel 500 includes a first display surface 510 and a first side 520 on a side of the first display surface 510. The second panel 600 includes a second display surface 610 and a second display surface. The second side 620 on one side of the 610, the first side 520 and the second side 620 are adjacent to each other.

Referring to FIG. 4 and FIG. 5, FIG. 4 is a partially enlarged schematic view showing the foldable display device 20 according to an embodiment of the present invention at a closed angle (0 degree), and FIG. 5 is a schematic view of an embodiment of the present invention. A partially enlarged schematic view of the foldable display device 20 at a deployment angle (180 degrees). The flexible display member 700 includes a first portion 710, a second portion 720 and a middle portion 730. The first portion 710 contacts the first display surface 510, and the second portion 720 contacts the second display surface 610. The 730 is located between the first side 520 and the second side 620. As shown in FIG. 3 and FIG. 3A, the pivot assembly 10 includes a first pivot member 100 and a second pivot member 200. The first pivot member 100 and the second pivot member 200 are symmetrically disposed with each other, in other words, All of the components of the first pivot member 100 and the second pivot member 200, the connection relationship between the components, and the overall actuation manner are all symmetrical.

As shown in FIG. 4, when the first pivot member 100 and the second pivot member 200 are relatively pivoted to a closing angle (here, the closing angle is defined as 0 degrees, that is, the first pivot member 100 and the second pivot member 200) The first plate member 500 and the second plate member 600 are superposed on each other. At this time, the intermediate portion 730 of the flexible display member 700 contacts the first side edge 520 of the first plate member 500 and The second side 620 of the second panel 600, in particular, the intermediate portion 730 of the flexible display member 700 will be fully attached to the first side 520 and the second side 620. In this embodiment, the first side 520 is curved, and the second side 620 is curved. When the first pivot member 100 and the second pivot member 200 are pivoted to a closed angle, the first side is The 520 and the second side 620 together form a semicircular shape. At this time, the intermediate portion 730 of the flexible display member 700 is completely attached to the semicircular surface formed by the first side 520 and the second side 620. .

As shown in FIGS. 4 and 5, when the first pivot member 100 rotates in the clockwise direction A1, the second pivot member 200 rotates in the counterclockwise direction A2 when the two pivot members 100, 200 are relatively pivoted. In the process of expanding the angle (herein defined as the angle of expansion is 180 degrees, that is, the first pivot member 100 and the second pivot member 200 are each rotated by 90 degrees, so the total is 180 degrees), the first plate 500 will gradually Sliding a first distance to the first direction D1, and the second plate 600 sliding a second distance toward the second direction D2, wherein the first direction D1 is opposite to the second direction D2, thereby causing the first plate 500 After the second panel 600 is fully deployed, the first side 520 and the second side 620 are spaced apart from each other by a predetermined distance, which is equal to the first distance plus the second distance. That is, in the process of unfolding the first plate member 500 and the second plate member 600, since the first plate member 500 and the second plate member 600 are gradually slid in opposite directions, respectively, the flexible display member 700 will be It is completely flattened into a plane without the intermediate protrusions as described in the prior art. That is, the first portion 710 and the second portion 720 of the flexible display member 700 are coplanar with the intermediate portion 730, and the first portion 710, the second portion 720, and the intermediate portion of the flexible display member 700 The 730 will form a flat surface without any bulges or depressions.

As shown in FIGS. 3 and 3A, the first pivot member 100 includes a first main shaft body 110, a first sub-shaft body 120, a first main arm 130, and a first sub-arm 140. The first main shaft body 110 includes a first main gear 111 that is circumferentially fixed to the first main shaft body 110. The first auxiliary shaft body 120 includes a first auxiliary gear 121 that is circumferentially fixed to the first auxiliary shaft body 120, and the first auxiliary gear 121 meshes with the first main gear 111. The first main arm 130 includes opposing head ends 131 and ends 132, and the head end 131 of the first main arm 130 is fixed to the first main shaft body 110, so that when the first main shaft body 110 is pivoted clockwise or counterclockwise The first main arm 130 is driven by the first main shaft body 110 to rotate clockwise or counterclockwise with the first main shaft body 110 as a fulcrum. The first sub-arm 140 includes a head end 141 and a tip end 142, and the head end 141 of the first sub-arm 140 is pivotally coupled to the first countershaft body 120. Also, the end 132 of the first main arm 130 is slidably coupled to the end 142 of the first sub-arm 140. In the embodiment, the end 132 of the first main arm 130 is provided with a first main sliding unit 133, and the end 142 of the first auxiliary arm 140 is provided with a first sub sliding unit 143, and the first sub sliding unit 143 and the first A main sliding unit 133 is slidably coupled to each other. The second pivot member 200 is symmetrical to the first pivot member 100, and the second pivot member 200 includes a second main shaft body 210, a second sub-shaft body 220, a second main arm 230, and a second sub-arm 240. The second main shaft body 210 includes a second main gear 211 that is circumferentially fixed to the second main shaft body 210. The second auxiliary shaft body 220 includes a second auxiliary gear 221 that is circumferentially fixed to the second secondary shaft body 220, and the second auxiliary gear 221 engages the second primary gear 211 and the first secondary gear 121, respectively. The second main arm 230 includes a head end 231 and a tip end 232, and a head end 231 of the second main arm 230 is fixed to the second main shaft body 210. Therefore, when the second main shaft body 210 is pivoted clockwise or counterclockwise, the second main arm 230 is driven by the second main shaft body 210 to rotate clockwise or counterclockwise with the second main shaft body 210 as a fulcrum. The second sub-arm 240 includes a head end 241 and a tip end 242, and a head end 241 of the second sub-arm 240 is pivotally coupled to the second countershaft body 220. Also, the end 232 of the second main arm 230 is slidably coupled to the end 242 of the second sub-arm 240. In the present embodiment, the end 232 of the second main arm 230 is provided with a second main sliding unit 233. The end 242 of the second sub-arm 240 is provided with a second sub-sliding unit 243, and the second sub-sliding unit 243 and the second main sliding unit 233 are slidably coupled to each other. Wherein, when the first pivot member 100 and the second pivot member 200 are pivoted relative to each other, since the head end 131 of the first main arm 130 is fixed to the first main shaft body 110, and the head of the first sub-arm The end 141 is pivotally connected to the first sub-shaft 120, and the first main shaft body 110 and the first sub-shaft body 120 are engaged with each other by the first main gear 111 and the first sub-gear 121, so that the first main arm 130 is The end 132 is forced to slide only to the end 142 of the first sub-arm 140 (ie, the first main sliding unit 133 and the first sub-sliding unit 143 slide relative to each other). Similarly, when the second spindle body 210 is rotated clockwise or counterclockwise, the end 232 of the second main arm 230 is forced to slide to the end 242 of the second sub-arm 240 (ie, the second main sliding unit 233 and the second The two sub-sliding units 243 slide relative to each other). It should be particularly noted that since the first main shaft body 110 and the second main shaft body 210 are driven by the first sub-gear 121 and the second sub-gear 221, when the first main shaft body 110 is pivoted in the clockwise direction A1 When the second main shaft body 210 is pivoted in the counterclockwise direction A2, the first plate member 500 and the second plate member 600 are simultaneously opened and closed in an angular manner by the transmission of the gears.

In the present embodiment, the first main sliding unit 133 includes a sliding shaft 1331, and the first auxiliary sliding unit 143 includes a sliding groove 1431. The sliding shaft 1331 of the first main sliding unit 133 is slidably disposed on the first auxiliary sliding unit 143. In the sliding groove 1431; the second main sliding unit 233 includes a sliding shaft 2331, the second auxiliary sliding unit 243 includes a sliding groove 2431, and the sliding shaft 2331 of the second main sliding unit 233 is slidably disposed on the sliding of the second auxiliary sliding unit 243 In the slot 2431. The first sub-arm 140 includes a curved section, and the curved section of the first sub-arm 140 is coupled to the first sub-shaft 120. The curved section of the first sub-arm 140 is the head end 141 of the first sub-arm 140. The end 141 is further bent such that the first sub-arm 140 is generally L-shaped; the second sub-arm 240 includes a curved section, and the curved section of the second sub-arm 240 is coupled to the second sub-shaft 220, and the second sub-arm The curved section of 240 is the head end 241 of the second sub-arm 240, and the head end 241 is further bent so that the second sub-arm 240 is substantially L-shaped as a whole. It is to be further noted that, as shown in FIG. 4, in the present embodiment, the first sub-arm 140 and the second sub-arm 240 are designed as curved segments in order to minimize the arrangement between the components. The semicircular design can be formed in conjunction with the first side 520 and the second side 620 as described in the previous paragraph [0012].

In other embodiments, the sliding shaft and the sliding groove can also be arranged upside down (not shown). For example, the first main sliding unit includes a sliding slot, the first auxiliary sliding unit includes a sliding shaft, and the sliding shaft of the first auxiliary sliding unit can be Slidably disposed in the sliding groove of the first main sliding unit; the second main sliding unit includes a sliding groove, the second auxiliary sliding unit includes a sliding shaft, and the sliding shaft of the second auxiliary sliding unit is slidably disposed on the second main sliding unit In the sliding slot. At this time, the first main arm includes a curved section, the curved section of the first main arm is coupled to the first main shaft body, the second main arm includes a curved section, and the curved section of the second main arm is coupled to the second main shaft body.

In the embodiment, the sliding groove 1431 of the first sub-sliding unit 143 includes an opposite first end 1432 and a second end 1433. As the first pivot member 100 rotates, the sliding shaft 1331 of the first main sliding unit 133 slides between the first end 1432 and the second end 1433. The sliding groove 2431 of the second sub-sliding unit 243 includes an opposite first end 2432 and a second end 2433. As the second pivot member 200 rotates, the sliding shaft 2331 of the second main sliding unit 233 slides between the first end 2432 and the second end 2433.

As shown in FIG. 3 to FIG. 5 , the first pivot member 100 further includes a first fixing plate 150 , the first fixing plate 150 is in contact with the first main sliding unit 133 , and is slidably connected with the first main sliding unit 133 . The first sub-sliding unit 143 of the first sub-arm 140; the first pivoting member 100 further includes two first clamping plates 160, and the two first clamping plates 160 are fixedly disposed on the first fixing plate 150. The two first clamping plates 160 sandwich the first main arm 130 and the first sub-arm 140, so that the first main arm 130 and the first sub-arm 140 are limited to the first clamping when rotating. Between the plates 160 to maintain stability during rotation. Further, the first fixing plate 150 is fixed to the first plate 500, and the sliding shaft 1331 of the first main arm 130 passes through the first clamping plate 160. As described in the foregoing [0013] and [0014], when the first body shaft 110 of FIG. 4 is rotated in the clockwise direction A1 to FIG. 5, the first main sliding unit 133 on the first main arm 130 (ie, The sliding shaft 1331) is forced to slide in the first sub-sliding unit 143 (ie, the sliding groove 1431) on the end 142 of the first sub-arm 140, and, in the present embodiment, the sliding shaft 1331 is further disposed in the A fixing plate 150 is fixed, so that the first fixing plate 150 and the first plate member 500 to which the first fixing plate 150 is connected also slide by a distance in the first direction D1. The second pivot member 200 further includes a second fixing plate 250 that is in contact with the second main sliding unit 233 and is slidably coupled to the second auxiliary arm 240 with the second main sliding unit 233. The second sub-sliding unit 243; further, the second pivoting member 200 further includes two second clamping plates 260. The two second clamping plates 260 are fixedly disposed on the second fixing plate 250, and the two second clamping plates 260 are disposed. The second main arm 230 and the second sub-arm 240 are clamped so that the second main arm 230 and the second sub-arm 240 are restrained between the two second clamping plates 260 when rotating to maintain rotation The stability of the time is fixed, and the second fixing plate 250 is fixed to the second plate member 600, and the sliding shaft 2331 of the second main arm 230 is pivotally connected to the second clamping plate 260. As described above, when the first main shaft body 110 of FIG. 4 is rotated in the clockwise direction A1 to FIG. 5, the second main shaft body 210 is counterclockwise by the transmission of the first sub-gear 121 and the second sub-gear 221 The direction A2 is rotated, and the second main sliding unit 233 (ie, the sliding shaft 2331) on the second main arm 230 is forced by the second sub-sliding unit 243 on the end 242 of the second sub-arm 240 (ie, the sliding groove 2431) In the present embodiment, the sliding shaft 2331 is further disposed on the second fixing plate 250, so that the second plate member 600 to which the second fixing plate 250 and the second fixing plate 250 are connected is also used. The second direction D2 slides a distance. That is, when the user pulls the first plate member 500 and the second plate member 600, the stress applied to the first plate member 500 and the second plate member 600 may pass through the first fixing plate 150 and the second fixing plate 250. The first clamping plate 160 and the second clamping plate 260, the sliding shafts 1331, 2331, and the first main arm 130 and the second main arm 230 drive the first pivot member 100 and the second pivot member 200 to each other The first plate member 500 and the second plate member 600 are respectively slid in the first direction D1 and the second direction D2 by a distance, so that the flexible display member 700 can include the first portion 710 and the second portion. The 720 and the intermediate portion 730 are completely flattened into a plane. 4 and FIG. 5 omits the first fixing plate 150 and the first holding plate 160 in order to clearly show the first main arm 130 and the first sub-arm 140. However, the first pivot member 100 and the second pivot member 200 are symmetrical to each other, so that the first fixing plate 150 and the first clamping plate 160 sandwich the first main arm 130 and the first sub-arm 140 and pivot Referring to the state of the sliding shaft 1331, the second main arm 230 and the second sub-arm 240 can be sandwiched between the second fixing plate 250 and the second clamping plate 260 and pivotally connected to the sliding shaft 2331.

In this embodiment, the pivot assembly 10 further includes two spaced apart bracket plates 300. The first spindle body 110, the first secondary shaft body 120, the second spindle body 210 and the second secondary shaft body 220 respectively penetrate the pivot Connected to the two bracket plates 300, the bracket plate 300 can improve the strength and stability of the overall structure. In the present embodiment, the first main gear 111, the first sub-gear 121, the second main gear 211, and the second sub-gear 221 are sandwiched between the two bracket plates 300, but are not limited thereto.

In this embodiment, the pivot assembly 10 further includes a first torsion member 410 and a second torsion member 420. The first torsion member 410 is disposed on the first main shaft body 110, and the second torsion member 420 is disposed on the second main shaft body. 210 on. The first torsion member 410 includes a plurality of annular units including a friction pad 411, a plurality of elastic spacers 412, and a nut 413. The second torsion member 420 includes a plurality of annular units including friction pads 421. , a plurality of elastic spacers 422 and a nut 423. The first and second torsion members 410, 420 may adopt structures well known to those skilled in the art, and details are not described herein. The first torsion member 410 and the second torsion member 420 can provide a suitable frictional force to maintain the relative position of the first main shaft body 110 and the second main shaft body 210.

Please refer to FIG. 6 to FIG. 8. FIG. 6 is a front elevational view showing the pivot assembly 10 of the embodiment of the present invention at 0 degrees, and FIG. 7 is a schematic view of the pivot assembly 10 of the present embodiment. FIG. 8 is a front elevational view showing the pivot assembly 10 of the embodiment of the present invention at 180 degrees. 6 to 8 illustrate a process when the pivot assembly 10 is rotated from 0 degrees to 180 degrees, and the angle of the pivot assembly 10 described herein is the first pivot member 100 and the second pivot member 200. The sum of the rotation angles, as shown in Fig. 8, shows the aspect in which the first pivot member 100 and the second pivot member 200 are each rotated by 90 degrees. The following description is based on the first pivot member 100. The actuation of the second pivot member 200 is symmetrical with the first pivot member 100. Therefore, the operation of the second pivot member 200 can be referred to the description of the first pivot member 100. As shown in FIG. 6, when the pivot assembly 10 is at 0 degrees, the sliding shaft 1331 of the first pivot member 100 is located at the first end 1432 of the sliding groove 1431. As shown in FIG. 7, when the pivot assembly 10 is at 90 degrees, the sliding shaft 1331 of the first pivot member 100 is located between the first end 1432 and the second end 1433 of the sliding groove 1431. That is, when the first pivot member 100 is rotated by 45 degrees from 0 degrees, the first main arm 130 and the first sub-arm 140 are respectively centered on the first main shaft body 110 and the first sub-shaft body 120. Rotating, but since the end 132 of the first main arm 130 is slidably coupled with the end 142 of the first sub-arm 140, the sliding shaft 1331 is forced to be displaced relative to the sliding groove 1431, and when the sliding shaft 1331 When the first end 1432 is moved from the first end 1432 to the second end 1433, the sliding shaft 1331 pivotally connected to the first clamping plate 160 transmits the first plate 500 to the first direction D1 through the first fixing plate 150. At the same time, the sliding shaft 2331 pivotally connected to the second clamping plate 260 can drive the second plate 600 to be displaced in the second direction D2 through the second fixing plate 250, and because the first pivot member 100 and the second pivot The shaft members 200 are symmetrical to each other, and thus the displacement directions of the first plate member 500 and the second plate member 600 are also symmetrical (that is, displaced in directions away from each other). In other words, when the first pivot member 100 and the second pivot member 200 are rotated by 45 degrees from 0 degrees, respectively, the first plate member 500 and the second plate member 600 are relatively rotated while being apart from each other. Moreover, since the relative displacement generated between the sliding shafts 1331, 2331 and the sliding grooves 1431, 2431 causes the first plate 500 and the second plate 600 to be displaced relative to each other, the first plate 500 and the second plate 600 are The maximum distance that can be displaced from each other is related to the length of the sliding grooves 1431, 2431.

When the first pivot member 100 continues to rotate from 45 degrees to 90 degrees (the pivot assembly 10 is from 90 degrees to 180 degrees), the actuation process is as described above, and will not be described herein. Finally, as shown in FIG. 8, when the pivot assembly 10 is at 180 degrees, the sliding shaft 1331 of the first pivot member 100 is located at the second end 1433 of the sliding groove 1431, at which time the first pivot member 100 and the second The pivot member 200 is at an unfolding angle, that is, the first panel 500 and the second panel 600 are 180 degrees apart from each other, and the first panel 500 and the second panel 600 are spaced apart from each other by a predetermined maximum distance. The maximum distance between the first plate member 500 and the second plate member 600 is corresponding to the width of the intermediate portion 730 of the flexible display member 700. Thus, the flexible display member 700 can assume a flat state at the deployment angle. In this way, the middle portion 730 does not bulge, thereby achieving the best display effect.

In the present invention, since the first main shaft body 110 is not fixed to the first plate member 500, the second main shaft body 210 is not fixed to the second plate member 600. The first fixing plate 150 is used to connect the first plate member 500 and the slidable sliding shaft 1331 so that the first plate member 500 can slide a distance in the first direction D1 (same reason, the second plate member can be the same The two directions D2 slide a distance), causing the first panel 500 and the second panel 600 to be extended to 180 degrees, and the first side 520 of the first panel 500 is gradually away from the second panel 600. The two sides 620 are capable of flattening the flexible display member.

Those skilled in the art will appreciate that the gears on the first main shaft body 110, the first countershaft body 120, the second countershaft body 220, and the second main shaft body 210 (including the first main gear 111, the first pair The gear 121, the second main gear 211, and the second sub-gear 221) are only transmitted as each other. The transmission is ultimately used to synchronize the first plate 500 and the second plate 600 at the same angle but in opposite directions (eg, when the first plate 500 is rotated in a clockwise direction, the second plate 600) It will rotate in a counterclockwise direction). However, there are many ways to drive. For example, in the present embodiment, the first sub-gear 121 of the first sub-shaft body 120 is omitted, and the second sub-gear 221 on the second counter-shaft body 220 is omitted, and then, directly with other transmission devices (for example, gears) The first spindle body 110 is capable of driving the second spindle body 210, which can be easily conceived by those skilled in the art. For example, the effect of driving the first main shaft body to the second main shaft body can be achieved by using the transmission/means disclosed in U.S. Patent Publication No. US 2015/0362958 or US 2015/0267450.

Further, in another embodiment of the present invention, the first main arm 130 and the second main arm 230 are also pivotally connected to the bracket plate 300, and the head end 131 and the second end of the first main arm 130 are The head end 231 of the main arm 230 is also fixedly coupled to the first main shaft body 110 and the second main shaft body 210, respectively, as described above, and then the first sub-shaft body 120 and the second sub-shaft body 220 are directly omitted. The head end 141 of the first sub-arm 140 and the head end 241 of the second sub-arm 240 are pivotally connected to the bracket plate 300 respectively (so that the first countershaft 120, the second can be achieved and replaced) The secondary shaft 220 is pivotally connected to the bracket plate 300; finally, the end 132 of the first main arm 130 is slidably coupled to the end 142 of the first sub-arm 140, and the second main arm 230 is The end 232 is slidably coupled to the end 242 of the second sub-arm 240. In such an embodiment, the same actuation efficiency can be achieved as well, and the second spindle body can be driven by the first spindle body by the transmission means disclosed in US Pat. Pub. No. US 2015/0362958 or US 2015/0267450. The effect.

10‧‧‧ pivot assembly
20, 20a‧‧‧Foldable display device
100‧‧‧First pivot member
110‧‧‧First spindle body
111‧‧‧First main gear
120‧‧‧First secondary shaft
121‧‧‧First gear
130‧‧‧First main arm
131‧‧‧ head end
End of 132‧‧‧
133‧‧‧First main sliding unit
1331‧‧‧Sliding shaft
140‧‧‧First arm
141‧‧‧ head end (bending section)
End of 142‧‧
143‧‧‧First sliding unit
1431‧‧‧ sliding slot
1432‧‧‧ first end
1433‧‧‧ second end
150‧‧‧First fixed plate
160‧‧‧First clamping plate
200‧‧‧Second pivot member
210‧‧‧Second spindle body
211‧‧‧Second main gear
220‧‧‧Second secondary shaft
221‧‧‧second secondary gear
230‧‧‧second main arm
231‧‧‧ head end
End of 232‧‧‧
233‧‧‧Second main sliding unit
2331‧‧‧Sliding shaft
240‧‧‧second secondary arm
241‧‧‧ head end (bending section)
End of 242‧‧‧
243‧‧‧Second secondary sliding unit
2431‧‧‧Sliding trough
2432‧‧‧ first end
2433‧‧‧second end
250‧‧‧Second fixed plate
260‧‧‧Second clamping plate
300‧‧‧ bracket plate
410‧‧‧First Torque Parts
411‧‧‧Scratch gasket
412‧‧‧elastic gasket
413‧‧‧ Nuts
420‧‧‧Second Torque Parts
421‧‧‧Abrasive gasket
422‧‧‧elastic gasket
423‧‧‧ nuts
500, 500a‧‧‧ first board
501, 601‧‧ positive
502, 602‧‧‧ side
510‧‧‧First display surface
520‧‧‧ first side
600, 600a‧‧‧ second board
610‧‧‧Second display
620‧‧‧ second side
700, 700a‧‧‧Flexible display parts
710‧‧‧ first part
720‧‧‧ second part
730, 730a‧‧‧ middle part
A1‧‧‧clockwise
A2‧‧‧ counterclockwise
D1‧‧‧ first direction
D2‧‧‧ second direction

1 is a schematic view of a conventional foldable display device; FIG. 2 is a schematic view of a foldable display device according to an embodiment of the present invention; FIG. 3 is a view showing a foldable display device according to an embodiment of the present invention; FIG. 3A is an enlarged view of the pivot assembly of FIG. 3; FIG. 4 is a partially enlarged schematic view showing the foldable display device of the present embodiment at a closed angle (0 degrees); 5 is a partially enlarged schematic view showing a foldable display device according to an embodiment of the present invention at a deployment angle (180 degrees); FIG. 6 is a front elevational view showing the pivot assembly of the present embodiment at 0 degrees. Figure 7 is a front elevational view showing the pivot assembly of the present embodiment at 90 degrees; and Figure 8 is a front elevational view of the pivot assembly of the present embodiment at 180 degrees.

100‧‧‧First pivot member

110‧‧‧First spindle body

111‧‧‧First main gear

120‧‧‧First secondary shaft

121‧‧‧First gear

130‧‧‧First main arm

131‧‧‧ head end

End of 132‧‧‧

133‧‧‧First main sliding unit

1331‧‧‧Sliding shaft

140‧‧‧First arm

141‧‧‧ head end (bending section)

End of 142‧‧

143‧‧‧First sliding unit

1431‧‧‧ sliding slot

1432‧‧‧ first end

1433‧‧‧ second end

150‧‧‧First fixed plate

160‧‧‧First clamping plate

200‧‧‧Second pivot member

210‧‧‧Second spindle body

211‧‧‧Second main gear

220‧‧‧Second secondary shaft

221‧‧‧second secondary gear

230‧‧‧second main arm

231‧‧‧ head end

End of 232‧‧‧

233‧‧‧Second main sliding unit

2331‧‧‧Sliding shaft

240‧‧‧second secondary arm

241‧‧‧ head end (bending section)

End of 242‧‧‧

243‧‧‧Second secondary sliding unit

2431‧‧‧Sliding trough

2432‧‧‧ first end

2433‧‧‧second end

250‧‧‧Second fixed plate

260‧‧‧Second clamping plate

300‧‧‧ bracket plate

410‧‧‧First Torque Parts

411‧‧‧Scratch gasket

412‧‧‧elastic gasket

413‧‧‧ Nuts

420‧‧‧Second Torque Parts

421‧‧‧Abrasive gasket

422‧‧‧elastic gasket

423‧‧‧ nuts

500‧‧‧ first board

510‧‧‧First display surface

520‧‧‧ first side

600‧‧‧second board

610‧‧‧Second display

620‧‧‧ second side

Claims (15)

A pivot assembly includes: a first pivot member, comprising: a first main shaft body including a first main gear, the first main gear is circumferentially fixed to the first main shaft body; a first countershaft The body includes a first auxiliary gear that is circumferentially fixed to the first auxiliary shaft, the first auxiliary gear meshes with the first main gear; and a first main arm that is connected to the first main shaft at one end a first main sliding unit is disposed at the other end; and a first auxiliary arm is pivotally connected to the first auxiliary shaft body at one end and a first auxiliary sliding unit is disposed at the other end, the first auxiliary sliding unit and the first auxiliary sliding unit The first main sliding unit is slidably coupled to each other; and a second pivoting member symmetrical to the first pivoting member, the second pivoting member comprising: a second main shaft body including a second main gear, the second The main gear is circumferentially fixed on the second main shaft body; a second auxiliary shaft body includes a second auxiliary gear, and the second auxiliary gear is circumferentially fixed on the second auxiliary shaft body, the second auxiliary pair The wheel respectively engages the second main gear and the first auxiliary gear; a second main arm has one end connected to the second main shaft body and the other end is provided with a second main sliding unit; and a second sub-arm, one end pivot The second sub-shaft body is connected to the ground and the second sub-sliding unit is disposed at the other end. The second sub-sliding unit and the second main sliding unit are slidably connected to each other. The pivot assembly of claim 1, wherein the first main sliding unit comprises a sliding shaft, the first auxiliary sliding unit comprises a sliding slot, and the sliding shaft of the first main sliding unit is Slidably disposed in the sliding slot of the first sub-sliding unit; the second main sliding unit includes a sliding shaft, the second sub-sliding unit includes a sliding slot, and the sliding shaft of the second main sliding unit is slidable The ground slot is disposed in the sliding slot of the second sub-sliding unit. The pivot assembly of claim 2, wherein the first sub-arm includes a curved section, the curved section of the first sub-arm connecting the first sub-shaft, the second pair The arm includes a curved section, and the curved section of the second secondary arm connects the second secondary shaft. The pivot assembly of claim 1, wherein the first main sliding unit comprises a sliding slot, the first sliding unit comprises a sliding shaft, and the sliding shaft of the first auxiliary sliding unit is Slidably disposed in the sliding slot of the first main sliding unit; the second main sliding unit includes a sliding slot, the second auxiliary sliding unit includes a sliding shaft, and the sliding shaft of the second secondary sliding unit is slidable The ground slot is disposed in the sliding slot of the second main sliding unit. The pivot assembly of claim 4, wherein the first main arm includes a curved section, the curved section of the first main arm connecting the first main shaft body, the second main branch The arm includes a curved section, the curved section of the second main arm connecting the second main shaft body. The pivot assembly of claim 1, wherein the first pivot member further includes a first fixing plate that is coupled to the first main sliding unit and is associated with the first main sliding unit a first sub-sliding unit slidably coupled to the first sub-arm; the second pivot member further includes a second fixing plate that is coupled to the second main sliding unit and is associated with the second main The sliding unit is slidably coupled to the second sub-sliding unit of the second sub-arm. The pivot assembly of claim 1, further comprising two spaced apart bracket plates, the first main shaft body, the first auxiliary shaft body, the second main shaft body and the second auxiliary shaft body respectively The penetrating pivot is disposed on the two bracket plates. The pivot assembly of claim 1, further comprising a first torsion member and a second torsion member, the first torsion member being disposed on the first main shaft body, the second torsion member being disposed on On the second spindle body. A pivot assembly includes: a bracket plate having a first pivot member and a second pivot member; wherein the first pivot member includes: a first spindle body pivotally mounted to the bracket a first main arm having a first main arm, the first main arm is connected to the first main body at one end and a first main sliding unit at the other end, and a first sub-arm a first sub-arm is pivotally connected to the bracket plate at one end and a first sub-sliding unit is disposed at the other end, the first sub-sliding unit and the first main sliding unit are slidably coupled to each other; and the second pivot member The method includes: a second main shaft body pivotally disposed on the bracket plate, and the second main shaft body has a second main arm, the second main arm is connected to the second main shaft body at one end and the second end is disposed at the other end a main sliding unit; and a second auxiliary arm pivotally coupled to the bracket plate at one end and a second secondary sliding unit disposed at the other end, the second secondary sliding unit and the second The main sliding units are slidably coupled to each other. The pivot assembly of claim 9, wherein the first main shaft body drives the second main shaft body by a transmission device, so that the first main shaft body and the second main shaft body rotate in opposite directions. And sliding the first main sliding unit of the first main arm on the first auxiliary sliding unit of the first auxiliary arm, and the second main sliding unit of the second main arm is in the second The second sub-sliding unit of the sub-arm slides on the second sub-sliding unit. The pivot assembly of claim 10, wherein the first main sliding unit comprises a sliding shaft, the first auxiliary sliding unit comprises a sliding slot, and the sliding shaft of the first main sliding unit is Slidably disposed in the sliding slot of the first sub-sliding unit; the second main sliding unit includes a sliding shaft, the second sub-sliding unit includes a sliding slot, and the sliding shaft of the second main sliding unit is slidable The ground slot is disposed in the sliding slot of the second sub-sliding unit. The pivotal assembly of claim 11, wherein the first pivoting member further comprises a first fixing plate and a second fixing plate, wherein the first fixing plate is configured by the first main sliding unit The sliding shaft is coupled to the first main arm and slidably coupled to the first sub-arm with the first main arm; the second fixing plate is supported by the sliding shaft of the second main sliding unit The second main arm is coupled to the second main arm and slidably coupled to the second sub-arm. The pivoting assembly of claim 12, wherein the first fixing plate further comprises two first clamping plates, and the two first clamping plates are fixedly disposed on the first fixing plate, the two The first clamping plate holds the first main arm and the first auxiliary arm; the second fixing plate further includes two second clamping plates, and the two second clamping plates are fixedly disposed on the second fixing plate The two second clamping plates sandwich the second main arm and the second auxiliary arm. A foldable display device comprising: a first panel comprising a first display surface and a first side on a side of the first display surface; a second panel comprising a second display surface and a second side of the second display surface, the first side and the second side are adjacent to each other; the pivot assembly according to any one of claims 1 to 13, The first pivot member is coupled to the first plate member, the second pivot member is coupled to the second plate member, and a flexible display member including a first portion and a second portion And a middle portion, the first portion is in contact with the first display surface, and the second portion is in contact with the second display surface, the intermediate portion is located between the first side and the second side, wherein When the first pivot member and the second pivot member are pivoted to a closed angle, the first plate member and the second plate member are overlapped with each other; when the first pivot member and the second pivot member The shaft member is pivoted to an unfolding angle, and the first plate member and the second plate member are respectively slid in a reverse direction by a distance. The first side and the second side spaced from each other, to level the first portion of the flexible display member, the intermediate portion and a second portion. The foldable display device of claim 14, wherein the first side is curved and the second side is curved, when the first pivot member and the second pivot member The first side and the second side together form a semicircular shape when pivoted relative to the closing angle.