A sliding roller device and display device

Abstract

The embodiment of the present disclosure provides a sliding and rolling device and a display device. The sliding and rolling device is used for assisting a flexible display module to slide and roll up and expand. The flexible display module has a first side edge and a second side edge. A fixed casing includes a mounting structure, which is used for fixing at least the first side edge of the flexible display module. A movable casing reciprocates along an X direction relative to the fixed casing. A sliding track is arranged on at least one side of the movable casing along a Y direction. A supporting structure is arranged on one side of the movable casing and is slidingly arranged in the sliding track along an arc-shaped path. The supporting structure is used for supporting the flexible display module and is fixed relative to at least the second side edge of the flexible display module. The flexible display module slides along the X direction with the supporting structure. An outer supporting structure is in contact with the movable casing along the Y direction, so as to provide a supporting force along the Y direction for the supporting structure. The sliding and rolling device is used for restricting the amount of arching of the flexible display module along the X direction and the amount of lifting of the second side edge of the flexible display module during the sliding and rolling process.

Description

TECHNICAL FIELD

[0001] Embodiments of the present disclosure relate to the technical field of display, and in particular, to a sliding roll device and a display device. BACKGROUND

[0002] Flexible display screens have good folding and bending performance, which provides a possibility for the design of new form display devices. With a slidable display device, the screen display area can change according to the different scene needs of users, which becomes an important development direction of future flexible display.

[0003] Sliding roll is another innovative application field of flexible display panels. This form realizes that consumers can randomly switch the display area of flexible panels according to their own needs, which not only facilitates users to carry, but also provides a better use experience than folding display panels. It is an important direction of flexible display panel development. Through rolling and unfolding, the product can be freely converted between mobile phones and tablets, realizing the expansion and reduction of display area, and being applicable to different use scenarios of different consumer groups. SUMMARY

[0004] Embodiments of the present disclosure provide a sliding roll device and a display device for restraining the arching amount of a flexible display module and the amount of the second side edge of the flexible display module being lifted up in the X direction during the sliding roll process.

[0005] In a first aspect, the present disclosure provides a sliding roll device for assisting a flexible display module to slide and roll up and unfold, the flexible display module having a first side edge and a second side edge arranged oppositely;

[0006] The sliding roll device comprises a fixed casing, the fixed casing comprising a mounting structure, the mounting structure being used at least for fixing the first side edge of the flexible display module;

[0007] A movable casing, the movable casing reciprocatingly moving relative to the fixed casing in the X direction;

[0008] A sliding track, the sliding track being arranged on at least one side of the movable casing in the Y direction, the Y direction being perpendicular to the X direction, and a plane formed by the X direction and the Y direction being parallel to the flexible display module;

[0009] A support structure, the support structure being located on one side of the movable casing, the support structure being slidingly arranged in the sliding track along an arc-shaped path, a side of the support structure away from the movable casing being used for supporting the flexible display module, and at least the second side edge of the flexible display module being fixed oppositely, the flexible display module sliding with the support structure in the X direction;

[0010] An outer supporting structure is in contact with the movable casing along the Y direction, and when the flexible display module is unfolded, the outer supporting structure is in contact with both the supporting structure and the movable casing to provide a supporting force along the Y direction to the supporting structure, so that the distance between the supporting structure and the sliding rail in the Y direction is reduced.

[0011] The flexible display module is slidably rolled and unfolded by sliding the movable casing relative to the fixed casing along the X direction. Specifically, a sliding rail is arranged on at least one side of the movable casing along the Y direction, and the supporting structure is slidably arranged in the sliding rail. Here, at least the first side of the flexible display module is pasted on the mounting structure of the fixed casing to prevent relative movement between the flexible display module and the fixed casing during the rolling process. The second side of the flexible display module is fixed relative to the supporting structure. When the supporting structure performs track rolling movement along the sliding rail, the movable casing is pushed by the driving force to slide out along the X direction, and the second side of the flexible display module is also slid, so as to realize the increase of the display area of the flexible display module. The flexible display module has relative movement with the movable casing. The supporting structure performs track rolling movement along the sliding rail, so as to reduce the displacement of the flexible display module in the Z direction. The sliding rail can also constrain the amount of arching of the flexible display module along the X direction and the amount of warping of the second side of the flexible display module during the rolling process. The outer supporting structure limits the bending and arching of the supporting structure in the Y direction, that is, provides Y direction tension to the flexible display module, so as to reduce the arching amount of the flexible display module along the Y direction. In addition, the outer supporting structure only provides Y direction tension to the flexible display module when the display device is completely unfolded, so as to ensure the flatness of the flexible display module in the unfolded state and improve the display effect of the flexible display module. Of course, the outer supporting structure does not provide tension to the supporting structure in the Y direction during the rolling process, so that the outer supporting structure cannot contact the supporting structure, preventing friction loss of the supporting structure.

[0012] Optionally, the sliding rail comprises a rail body, and the rail body is formed with a sliding groove.

[0013] The opening of the sliding groove faces the movable casing, and the sliding groove is in a U-shaped structure, and the opening of the U-shaped structure faces the movable casing.

[0014] The supporting structure comprises a supporting body and a supporting part, the supporting part is arranged on the supporting body along the Y direction, and the supporting part is formed with a protrusion, the protrusion protrudes in a direction away from the supporting body, and the protrusion is in sliding cooperation with the sliding groove.

[0015] Optionally, the supporting body comprises a plurality of supporting strips, the plurality of supporting strips are arranged in parallel and at intervals along the X direction, and each supporting strip of the plurality of supporting strips extends along the Y direction.

[0016] The support strips are arranged corresponding to the protrusions.

[0017] Optionally, the fixed cabinet comprises a guide structure connected with the mounting structure, the guide structure comprises a plurality of guide strips, the plurality of guide strips are arranged in parallel and spaced apart along the Y direction, and each guide strip of the plurality of guide strips extends along the X direction.

[0018] The movable cabinet comprises a bottom plate and a plurality of insertion strips, the plurality of insertion strips are arranged on a side of the bottom plate facing the support structure, the plurality of insertion strips are arranged in parallel and spaced apart along the Y direction, and each insertion strip of the plurality of insertion strips extends along the X direction.

[0019] At least one insertion strip is arranged in a spacing area between any two adjacent guide strips.

[0020] Optionally, further comprising: an external support structure, the external support structure abuts against a first insertion strip of the plurality of insertion strips along the Y direction.

[0021] During movement of the movable cabinet relative to the fixed cabinet along the X direction, the flexible display module switches between a rolled-up state and an unfolded state.

[0022] When the flexible display module is in the unfolded state, the external support structure abuts against the support part to provide a support force along the Y direction to the support structure.

[0023] Optionally, when the flexible display module is in the rolled-up state, the insertion strip of the movable cabinet and the guide strip of the fixed cabinet are matched, the insertion strip is inserted between two adjacent guide strips, and the external support structure is arranged along the Y direction between the first insertion strip of the plurality of insertion strips and the first guide strip of the plurality of guide strips.

[0024] When the flexible display module is in the unfolded state, the insertion strip of the movable cabinet and the guide strip of the fixed cabinet are misaligned, and the external support structure abuts against the support part to provide a support force along the Y direction to the support structure.

[0025] Optionally, the external support structure comprises a spring block, a connecting piece and an elastic piece.

[0026] When the flexible display module is in the rolled-up state, the spring block is arranged between the first insertion strip and the first guide strip, the connecting piece is arranged in the spring block along the Y direction, and the connecting piece partially extends into the first insertion strip, a gap is formed between the spring block and the first insertion strip, the elastic piece is arranged at the gap, and the elastic piece has an elastic potential energy for moving the spring block away from the first insertion strip.

[0027] Optionally, the connecting member has a stepped surface, the elastic block has a stepped hole, the connecting member penetrates through the stepped hole, the diameter of the end surface of the stepped hole facing the first insertion strip is smaller than the diameter of the other end surface of the stepped hole, the stepped surface and the stepped hole limit the movement path length of the connecting member in the stepped hole, and the elastic member is ejected by a distance smaller than the movement path length.

[0028] Optionally, the elastic block has a first inclined surface, and the first inclined surface is parallel to a second inclined surface of the first guide strip.

[0029] Optionally, the outer support structure is two, and the outer support structure is arranged at the first and last insertion strips in the plurality of insertion strips along the Y direction.

[0030] Optionally, when the flexible display module is in the rolled state, the insertion strip of the movable housing and the guide strip of the fixed housing are matched, the insertion strip is inserted between two adjacent guide strips, and the outer support structure is arranged between the first guide strip in the plurality of guide strips and the sliding rail along the Y direction.

[0031] When the flexible display module is in the unfolded state, the insertion strip of the movable housing and the guide strip of the fixed housing are staggered, the outer support structure abuts against the support portion to provide a support force along the Y direction to the support structure.

[0032] Optionally, the outer support structure comprises an elastic block and a torsion spring.

[0033] The first guide strip is provided with a positioning column.

[0034] One end of the torsion spring is connected with the first insertion strip, the torsion spring passes around the positioning column, and the other end of the torsion spring is connected with the elastic block.

[0035] Optionally, the elastic block has a protrusion, and the bottom plate of the movable housing has a groove corresponding to the protrusion.

[0036] Alternatively, the elastic block has a groove, and the bottom plate of the movable housing has a protrusion corresponding to the groove.

[0037] Optionally, a push rod is further included.

[0038] The push rod is detachably arranged on the side of the movable housing away from the fixed housing, the outer surface of the push rod is matched with the support structure, and the push rod is always in contact with the support structure.

[0039] In a second aspect, the display device provided by the present disclosure includes the sliding and rolling device of any one of the first aspect, and further includes a flexible display module; the flexible display module is arranged on one side of the support structure and the fixed shell in the sliding and rolling device, and the sliding and rolling device can assist the flexible display module to slide, roll up and unroll. BRIEF DESCRIPTION OF DRAWINGS

[0040] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings needed to be used in the embodiments will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present disclosure, and other drawings can be obtained by those skilled in the art without creative labor.

[0041] Figure 1 A structural schematic diagram of a rolled-up state of a display device provided by an embodiment of the present disclosure;

[0042] Figure 2 A structural schematic diagram of an unrolled state of a display device provided by an embodiment of the present disclosure;

[0043] Figure 3 An exploded view of a display device provided by an embodiment of the present disclosure;

[0044] Figure 4 A sectional view of A-A in Figure 1 ;

[0045] Figure 5 A sectional view of B-B in Figure 2 ;

[0046] Figure 6 A structural schematic diagram of a sliding rail provided by an embodiment of the present disclosure;

[0047] Figure 7 A structural schematic diagram of a support structure provided by an embodiment of the present disclosure;

[0048] Figure 8 A local enlarged schematic diagram of S area in Figure 7 ;

[0049] Figure 9 A structural schematic diagram of an external support structure provided by an embodiment of the present disclosure;

[0050] Figure 10 A structural schematic diagram of an elastic block in the external support structure provided by an embodiment of the present disclosure;

[0051] Figure 11 A local enlarged diagram of a sliding and rolling device using an external support structure in a rolled-up state provided by an embodiment of the present disclosure;

[0052] Figure 12 For the corresponding Figure 11 Sectional view at CC in the middle;

[0053] Figure 13 For the corresponding Figure 12 A sectional view at point T in the diagram;

[0054] Figure 14 A partially enlarged view of the sliding winding device provided in the embodiments of this disclosure, showing the switching between a winding state and an unfolding state using an external support structure;

[0055] Figure 15 For the corresponding Figure 14 Sectional view at CC in the middle;

[0056] Figure 16 For the corresponding Figure 14 Sectional view at DD in the middle;

[0057] Figure 17 A partially enlarged view of the sliding device provided in the embodiments of this disclosure using an external support structure in the unfolded state;

[0058] Figure 18 For the corresponding Figure 17 Sectional view at CC in the middle;

[0059] Figure 19 For the corresponding Figure 17 Sectional view at DD in the middle;

[0060] Figure 20 A partially enlarged view of the sliding device provided in the embodiments of this disclosure using another external support structure in the unfolded state;

[0061] Figure 21 For the corresponding Figure 20 A partial sectional view of the Q region;

[0062] Figure 22 For the corresponding Figure 20 A schematic diagram of the torsion spring;

[0063] Figure 23 For the corresponding Figure 20 A schematic diagram of the engagement structure between the spring block and the movable housing;

[0064] Figure 24 A partially enlarged view of the winding state of the sliding winding device provided in the embodiments of this disclosure using another external support structure;

[0065] Figure 25 For the corresponding Figure 24 A partial sectional view of region P in the diagram.

[0066] BRIEF DESCRIPTION OF DRAWINGS:01-flexible display module;a1-first side;a2-second side;011-sliding and rolling active area;012-display fixed area;1-fixed casing;11-mounting structure;12-guiding structure;121-guiding strip;121a-first guiding strip;121b-last guiding strip;1211-second inclined surface;2-active casing;21-bottom plate;211-groove;22-inserting strip;22a-first inserting strip;22b-last inserting strip;3-sliding rail;31-rail body;311-slotted groove;3111-opening;312-mounting groove;4-supporting structure;41-supporting body;411-supporting strip;42-supporting part;421-protrusion;422-abutting block;5-outer supporting structure;51-elastic block;511-step hole;5111-step surface;512-first inclined surface;52-connection piece;521-step surface;53-elastic member;54-elastic block;541-protruding block;55-torsion spring;551-first end;552-second end;56-positioning column;6-push rod. DETAILED DESCRIPTION

[0067] In order to make the purposes, technical solutions and advantages of the present disclosure clearer, the present disclosure will be further described in detail below with reference to the drawings. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present disclosure.

[0068] For the convenience of understanding, as shown in Figure 1 , the X direction (X axis), Y direction (Y axis) and Z direction (Z axis) involved in the embodiments of the present disclosure constitute a space rectangular coordinate system, which is three mutually perpendicular number axes passing through a space fixed point O, all of which take O as the origin and have the same unit length. The three number axes are respectively called X axis (horizontal axis), Y axis (vertical axis) and Z axis (vertical axis), collectively called coordinate axes. The X direction is the movement direction of the active casing 2 relative to the fixed casing 1, the Y direction is perpendicular to the X direction, and the X direction and the Y direction form a plane parallel to the display area of the flexible display module 01, and the Z direction is the thickness direction of the display device, that is, perpendicular to the plane formed by the X direction and the Y direction.

[0069] As shown in Figure 1 and Figure 2 , the structure schematic diagram of the rolled state of the display device is shown in Figure 1 , the structure schematic diagram of the unfolded state of the display device is shown in Figure 2 , wherein the flexible display module 01 is arranged outside the sliding and rolling device, and the sliding and rolling device is arranged on the outer side of the fixed casing 1 in Figure 2The flexible display module 01 in the flexible display device 1 is divided into a sliding rolling movable area 011 and a display fixed area 012. The flexible display module 01 in the sliding rolling movable area 011 can realize the increase or decrease of the display area of the flexible display module 01 through the sliding rolling movement of the movable casing 2 and the fixed casing 1. The flexible display module 01 in the display fixed area 012 does not move with the sliding rolling movement of the movable casing 2, that is, there is no change in the display area; that is, in the rolling state in the flexible display device 1, the display area of the flexible display module 01 is the corresponding display fixed area 012. Figure 1 Figure 2 In the rolling state in the flexible display device 1, the display area of the flexible display module 01 is the corresponding display fixed area 012.

[0070] The first aspect, as shown in Figures 1-3 , the embodiment of the present disclosure provides a sliding rolling device for assisting the flexible display module 01 to slide and roll up and unfold. The flexible display module 01 has a first side edge a1 and a second side edge a2 arranged oppositely.

[0071] The sliding rolling device comprises a fixed casing 1, the fixed casing 1 comprises a mounting structure 11, and the mounting structure 11 is used at least for fixing the first side edge a1 of the flexible display module 01.

[0072] A movable casing 2, the movable casing 2 reciprocates along the X direction relative to the fixed casing 1.

[0073] A sliding track 3, the sliding track 3 is arranged on at least one side of the movable casing 2 along the Y direction.

[0074] A support structure 4, the support structure 4 is arranged on one side of the movable casing 2, the support structure 4 is arranged in the sliding track 3 along an arc-shaped path, and the side of the support structure 4 away from the movable casing 2 is used for supporting the flexible display module 01, and at least the second side edge a2 of the flexible display module 01 is fixed oppositely, and the flexible display module 01 slides along the X direction with the support structure 4.

[0075] ​It should be noted that the flexible display module 01 is rolled up and unfolded by sliding the movable casing 2 along the X direction relative to the fixed casing 1. Specifically, the sliding track 3 is arranged on at least one side of the movable casing 2 along the Y direction, and the support structure 4 is slidably arranged in the sliding track 3. Here, at least the first side edge a1 of the flexible display module 01 is attached to the mounting structure 11 of the fixed casing 1 to prevent relative movement between the flexible display module 01 and the fixed casing 1 during rolling, and the second side edge a2 of the flexible display module 01 is fixed relative to the support structure 4. When the support structure 4 moves along the sliding track 3 in a track rolling manner, the movable casing 2 is driven by the driving force to push the support structure 4 to slide out along the X direction, and the second side edge a2 of the flexible display module 01 is also driven to slide, so that the display area of the flexible display module 01 is increased, and the flexible display module 01 moves relative to the movable casing 2. The support structure 4 moves along the sliding track 3 in a track rolling manner, which can constrain the displacement of the flexible display module 01 in the Z direction to reduce the arching amount of the flexible display module 01 along the X direction and the amount of lifting of the second side edge a2 of the flexible display module 01 during rolling. The outer support structure 5 limits the bending and arching of the support structure 4 in the Y direction, that is, provides a Y direction tension to the flexible display module 01, so as to reduce the arching amount of the flexible display module 01 along the Y direction. In addition, the outer support structure 5 only provides a Y direction tension to the flexible display module 01 when the display device is completely unfolded, so as to ensure the flatness of the flexible display module 01 in the unfolded state and improve the display effect of the flexible display module 01. Of course, the outer support structure 5 does not provide a Y direction tension to the support structure 4 during rolling, so that the outer support structure 5 cannot contact the support structure 4, preventing friction loss of the support structure 4.

[0076] Reference Figure 3 The rolling device provided by the embodiment of the present disclosure is described in detail as follows: the movable casing 2 is slidably arranged with the fixed casing 1, the movable casing 2 slides relative to the fixed casing 1, the sliding track 3 is detachably connected with the movable casing 2, the sliding track 3 is arranged on at least one side of the movable casing 2 along the Y direction, and of course, in order to increase stability, the sliding track 3 is two, which are arranged on the two sides of the movable casing 2 along the Y direction. The detachable connection between the sliding track 3 and the movable casing 2 can be, for example, that the sliding track 3 and the movable casing 2 are relatively fixed by bolts or screws. The support structure 4 is located on one side of the movable casing 2 and is slidably arranged in the sliding track 3. The sliding track 3 supports the movement of the support structure 4 in the track to limit the Z direction displacement of the flexible display module 01 located on the support structure 4, realize the bending mode of the flexible display module 01, and limit the arching amount of the flexible display module 01 along the X direction and the lifting amount of the second side edge a2 of the flexible display module 01 during rolling.

[0077] Regarding the fixed shell 1 includes a guide structure 12 connected with the mounting structure 11, the guide structure 12 includes a plurality of guide bars 121, a plurality of guide bars 121 are arranged in parallel along the Y direction, each guide bar 121 of the plurality of guide bars 121 extends along the X direction; the movable shell 2 includes: a bottom plate 21 and a plurality of insertion bars 22, a plurality of insertion bars 22 are arranged on the side of the bottom plate 21 facing the support structure 4, a plurality of insertion bars 22 are arranged in parallel along the Y direction, each insertion bar 22 of the plurality of insertion bars 22 extends along the X direction; at least one insertion bar 22 is distributed in the interval area between any two adjacent guide bars 121, for the convenience of understanding and description of the scheme, along the Y direction, the plurality of guide bars 121 has a first guide bar 121a and a last guide bar 121b, and along the Y direction, the plurality of insertion bars 22 includes a first insertion bar 22a and a last insertion bar 22b, the outer support structure 5 is arranged on the bottom plate 21 of the movable shell 2 and abuts against the first insertion bar 22a, of course, in order to increase the stability, the outer support structure 5 is two, respectively abutting against the first insertion bar 22a and the last insertion bar 22b, the support structure 4 is constrained in the Y direction by the outer support structure 5, the arching of the flexible display module 01 generated in the Y direction during the rolling process of the rolling device is limited, and the flexible display module 01 switches between the rolling state and the unfolded state; when the flexible display module 01 is in the unfolded state, the outer support structure 5 abuts against the support part 42 to provide support force in the Y direction for the support structure 4. The push rod 6 is detachably arranged on the side of the movable shell 2 away from the fixed shell 1, the outer surface of the push rod 6 is matched with the support structure 4, and the push rod 6 is always in contact with the support structure 4, the push rod 6 moves with the movable shell 2 to retract / roll out, and pushes the support structure 4 and the flexible display module 01 to roll, for example, the push rod 6 and the movable shell 2 can be connected by bolts or screws. The first side edge a1 of the flexible display module 01 is connected with the mounting structure 11 of the fixed shell 1, for example, the first side surface of the flexible display module 01 is bonded with the mounting structure 11 of the fixed shell 1, and the fixed shell 1 always remains fixed during the rolling movement, the purpose is to bond the flexible display module 01 to prevent relative movement between the flexible display module 01 and the display fixed area 012; the side of the support structure 4 away from the movable shell 2 is used to support the flexible display module 01, the support structure 4 supports the flexible display module 01 to prevent pressing virtual position and display unevenness, and is at least fixed relative to the second side edge a2 of the flexible display module 01, in order to increase the firmness of the connection, the overlapping parts of the flexible display module 01 and the support structure 4 are bonded.

[0078] As Figure 4 and Figure 5 shown, Figure 4 corresponding Figure 1 the rolling device in the rolling state, the A-A direction view, Figure 5 corresponding Figure 1The B-B direction sectional view of the slide roller device in the unfolded state. The matching relationship of the support body 41 and the support part 42 in the support structure 4 relative to the slide rail 3 is illustrated. The slide rail 3 includes a rail body 31, and the rail body 31 is formed with a slide groove 311. The support structure 4 includes the support body 41 and the support part 42, and the support part 42 is arranged on both sides of the support body 41 along the Y direction. The support part 42 is formed with a protrusion 421, and the protrusion 421 protrudes in a direction away from the support body 41. The protrusion 421 is in sliding fit with the slide groove 311. The determination of the bending shape of the flexible display module 01 is completed. By using the track type slide roller scheme, that is, the support force of the protrusion 421 passing through the slide groove 311, the descending height of the support structure 4 in the Z direction is constrained, so that the support structure 4 is more flat, and the amount of creases and the amount of warping of the second side edge a2 of the flexible display module 01 during the sliding process of the flexible display module 01 on the support structure 4 are reduced.

[0079] As shown in Figure 6 , regarding the specific structure of the slide rail 3, the slide rail 3 includes a rail body 31, and the rail body 31 is formed with a slide groove 311. The opening of the slide groove 311 faces the movable shell 2, and the slide groove 311 has a U-shaped structure. The opening 3111 of the U-shaped structure faces the movable shell 2. The rail body 31 is formed with a mounting groove 312, and the mounting groove 312 is matched with the movable shell 2. The protrusion 421 in the support part 42 in the support structure 4 is matched with the slide groove 311. For example, in order to reduce the friction force of the protrusion 421 sliding in the slide groove 311, the outer surface of the protrusion 421 here is a circular arc, that is, the contact between the protrusion 421 and the slide groove 311 is linear contact, which effectively reduces the contact area and thus reduces the friction resistance in the sliding process.

[0080] As shown in Figure 7 and Figure 8 , the support body 41 includes a plurality of support bars 411, and the plurality of support bars 411 are arranged in parallel and spaced apart along the X direction. Each support bar 411 of the plurality of support bars 411 extends along the Y direction. The support bar 411 is arranged corresponding to the protrusion 421. For example, the support part 42 is arranged at both ends of the support bar 411, and the protrusion 421 formed on the support part 42 is two. When the protrusion 421 is matched with the groove 211 in the slide rail 3, the groove 211 simultaneously provides support force to the protrusions 421 on both sides in the Y direction, so that the support bars 411 between the protrusions 421 receive the same support force. The deformation amount of the support bar 411 in the Z direction is reduced, the strength of the support bar 411 is guaranteed, and thus the flatness of the support surface formed by the plurality of support bars 411 is ensured, so as to improve the flatness of the flexible display module 01 on the support surface.

[0081] Figure 9 corresponding to Figure 3The sliding roller device provided by the embodiment of the present disclosure uses a schematic diagram of an outer supporting structure 5, which refers to a structure that can be popped out or retracted when the display device performs a sliding roller movement. The outer supporting structure 5 includes a spring block 51, a connecting piece 52, and an elastic piece 53. Figure 10 For Figure 9 The structure schematic diagram of the spring block 51 in the embodiment of the present disclosure is shown. The connecting piece 52 penetrates through the stepped hole 511, and the connecting piece 52 and the stepped hole 511 cooperate to limit the movement range of the spring block 51. The specific working process will be described in detail later.

[0082] As Figure 11 and Figure 12 shown, the sliding roller device provided by the embodiment of the present disclosure uses a partial enlarged view of an outer supporting structure 5 in a rolled state. When the flexible display module 01 is in a rolled state, the insertion bar 22 of the movable casing 2 cooperates with the guide bar 121 of the fixed casing 1, and the insertion bar 22 is inserted between two adjacent guide bars 121. The cooperation mode of the insertion bar 22 and the guide bar 121 can have multiple options, for example, the interval area between any two adjacent insertion bars 22 can be distributed with one guide bar 121, or the interval area between any two adjacent insertion bars 22 can be distributed with two guide bars 121, or the interval area between any two adjacent insertion bars 22 can be distributed with three guide bars 121. The specific structure form is not limited here; as long as the first insertion bar 22a in the plurality of insertion bars 22 and the first guide bar 121a in the plurality of guide bars 121 are provided with the outer supporting structure 5 along the Y direction, the outer supporting structure 5 can be in the rolled state. Figure 9 and Figure 10 The outer supporting structure 5 in the embodiment of the present disclosure is shown. When the flexible display module 01 is in an unfolded state, the insertion bar 22 of the movable casing 2 is misaligned with the guide bar 121 of the fixed casing 1, and the outer supporting structure 5 abuts against the abutting block 422 of the supporting part 42 to provide a supporting force along the Y direction to the supporting structure 4.

[0083] Specifically, the outer supporting structure 5 includes the spring block 51, the connecting piece 52, and the elastic piece 53. For example, the elastic piece 53 is a structure with elastic restoring force such as a spring or a spring sheet.

[0084] When the flexible display module 01 is in a rolled state, the spring block 51 is arranged between the first insertion bar 22a and the first guide bar 121a, the connecting piece 52 is arranged in the spring block 51 along the Y direction, and the connecting piece 52 partially extends into the first insertion bar 22a. There is a gap between the spring block 51 and the first insertion bar 22a, and the elastic piece 53 is arranged at the gap. The elastic piece 53 has an elastic potential energy for moving the spring block 51 away from the first insertion bar 22a. The spring block 51 is in contact with the fixed casing 1, and the elastic piece 53 is in a compressed state. As Figure 13As shown, the connector 52 has a stepped surface 521, and the spring block 51 has a stepped hole 511. The distance between the stepped surface 521 of the connector 52 and the stepped surface 5111 of the stepped hole 511 is L. When the fixed housing 110 is removed, the maximum distance that the spring block 51 can be ejected by the clamping elastic member 53 is L. When the sliding winding device is in the winding state, the support part 42 of the support structure 4 and the spring block 51 are not in contact.

[0085] like Figures 13-16 As shown, the connector 52 has a stepped surface 521, the spring block 51 has a stepped hole 511, the connector 52 passes through the stepped hole 511, the diameter of the end face of the stepped hole 511 facing the first insert 22a is smaller than the diameter of the other end face of the stepped hole 511, the stepped surface 521 and the stepped hole 511 limit the length of the movement path of the connector 52 in the stepped hole 511, and the distance that the elastic member 53 pops out is less than the length of the movement path.

[0086] During the sliding process of the sliding device provided in this embodiment, there is relative movement between the spring block 51 in the outer support structure 5 and the first and last guide bars 121 of the fixed housing 1. The spring block 51 has a first inclined surface 512, and the first guide bar 121a has a second inclined surface 1211. The first inclined surface 512 and the second inclined surface 1211 are parallel. When the movable housing 2 moves toward the fixed housing 1, the two inclined surfaces move in relative contact, which reduces the resistance during the sliding process.

[0087] like Figures 17-19 As shown, the elastic element 53 is still in a compressed state at this time. In addition, the spring block 51 is not in contact with the support part 42 of the support structure 4.

[0088] like Figure 17 As shown, Figure 18 When the display device is in the slid-out state, the first guide bar 121a in the fixed housing 1 is released from its constraint on the spring block 51. For example... Figure 13 As shown, the elastic element 53 relaxes, pushing the spring block 51 to slide outward, that is, the spring block 51 slides towards the first guide bar 121a, making the gap between the first insert bar 22a and the spring block 51 larger, as shown. Figure 19 The sliding distance is L. Therefore, as... Figure 20 As shown, the spring block 51 abuts against the support portion 42 of the support structure 4. This has the advantage of limiting the bending and arching of the support structure 4 in the Y direction, i.e., applying tension force to the flexible display module 01 in the Y direction, thereby reducing the amount of arching of the flexible display module 01 in the Y direction. Furthermore, the spring block 51 only applies tension force to the flexible display module 01 in the Y direction when the display device is fully slid open. During the sliding process, the ejection stroke is limited by the fixed housing 1, i.e., the ejection stroke is less than L. Therefore, the spring block 51 cannot contact the support portion 42 of the support structure 4, preventing frictional wear on the support portion 42.

[0089] like Figure 20 As shown, Figure 20 The following is a partial enlarged view of the sliding device provided in this embodiment of the present disclosure using another external support structure 5 in the unfolded state; when the flexible display module 01 is in the winding state, the insert 22 of the movable housing 2 and the guide strip 121 of the fixed housing 1 cooperate, the insert 22 is inserted between two adjacent guide strips 121, and an external support structure 5 is provided between the first guide strip 121a of the plurality of guide strips 121 and the sliding track 3 along the Y direction;

[0090] When the flexible display module 01 is in the unfolded state, the insert 22 of the movable housing 2 and the guide strip 121 of the fixed housing 1 are misaligned, and the outer support structure 5 abuts against the support part 42 to provide support force along the Y direction to the support structure 4.

[0091] like Figure 21 As shown, the external support structure 5 includes: a spring block 54 and a torsion spring 55; see also reference Figure 22 and Figure 20 The first guide bar 121a is provided with a positioning post 56; the first end 551 of the torsion spring 55 is connected to the first insert bar 22a, the torsion spring 55 passes around the positioning post 56, and the second end 552 of the torsion spring 55 is connected to the spring block 54.

[0092] like Figure 17 With the sliding mechanism in the unfolded state, a torsion spring 55 is used. Figure 21 Regarding the springs used, they occupy less space along the Z-direction, improving the overall space utilization of the machine. When the opening angle Φ of the torsion spring 55 changes, it absorbs the change in length of the two arms of the torsion spring 55 along the X-direction. Figure 23 The constraint method between the torsion spring 55 and the movable housing 2 and the fixed housing 1 is shown. The torsion spring 55 is fixed to the fixed housing 1 by the positioning pin 56 and is enveloped by the fixed housing 1. The fixed housing 1 can constrain the two arms of the torsion spring 55, that is, control its opening angle Φ, at which point the spring block 54 pops out.

[0093] like Figure 23 The spring block 54 has a protrusion 541, and the bottom plate 21 of the movable housing 2 has a groove 211 corresponding to the protrusion 541;

[0094] Alternatively, the spring block 54 has a groove 211, and the bottom plate 21 of the movable housing 2 has a protrusion 541 corresponding to the groove 211.

[0095] exist Figure 24 The interaction between the spring block 54 and the movable housing 2 is shown. The spring block 54 has multiple protrusions 421, specifically three protrusions 421. The movable housing 2 has three grooves 211. The three protrusions 421 and the three grooves 211 cooperate with each other. The advantage is that it not only restricts the displacement of the spring block 54 in the X and Z directions, but also allows it to slide as a whole in the y direction, avoiding tilting.

[0096] Figure 25 A partial enlarged view of another external support structure 5 in the rolling state is provided for the sliding rolling device of the embodiments of the present disclosure; reference is made to ​ Wherein the movable casing 2 moves along the X direction, drives the torsion spring 55 into the fixed casing 1, and reduces the opening angle Φ of the torsion spring 55, drives the elastic block 54 to slide along the Y direction, and thus realizes the retraction of the elastic block 54. The retraction or expansion of the elastic block 54 is determined by the retraction or expansion state of the movable casing 2.

[0097] In the second aspect, the embodiments of the present disclosure provide a display device, which comprises the sliding rolling device of any one of the first aspect, and further comprises a flexible display module 01; the flexible display module 01 is arranged on one side of the support structure 4 and the fixed casing 1 in the sliding rolling device, and the sliding rolling device can assist the flexible display module 01 to slide, roll and expand.

[0098] Obviously, those skilled in the art can make various modifications and variations to the present disclosure without departing from the spirit and scope of the present disclosure. Thus, if these modifications and variations of the present disclosure belong to the scope of the claims of the present application and the equivalent technologies thereof, the present disclosure also intends to include these modifications and variations.

Claims

1. A sliding cover device, wherein, The application is used for assisting flexible display module to slide and roll up and unroll, the flexible display module has first side edge and second side edge which are oppositely arranged along X direction; The slide roll device comprises fixed casing, the fixed casing comprises mounting structure, the mounting structure is used for fixing first side edge of the flexible display module at least; Movable casing, the movable casing reciprocates along X direction relative to the fixed casing; Slide rail, the slide rail is arranged on at least one side of the movable casing along Y direction, Y direction is perpendicular to X direction, the plane formed by X direction and Y direction is parallel to the flexible display module; Support structure, the support structure is located on one side of the movable casing, the support structure is slidably arranged in the slide rail along arc path, the side of the support structure away from the movable casing is used for supporting the flexible display module, and is fixed relative to the second side edge of the flexible display module at least, the flexible display module slides along X direction with the support structure; Outer support structure, the outer support structure contacts with the movable casing along Y direction, when the flexible display module unrolls, the outer support structure abuts with the support structure and the movable casing, so as to provide support force along Y direction for the support structure, so that the distance between the support structure and the slide rail in Y direction is reduced.

2. The sliding panel device of claim 1, wherein, The slide rail comprises rail body, the rail body is formed with slide groove; The opening of the slide groove faces the movable casing, the slide groove is U-shaped structure, the opening of the U-shaped structure faces the movable casing; The support structure comprises support body and support part, the support part is arranged on the support body along Y direction, and the support part is formed with protrusion, the protrusion protrudes in the direction away from the support body, and the protrusion is slidably matched with the slide groove.

3. The sliding panel device of claim 2, wherein, The support body comprises a plurality of support strips, the plurality of support strips are arranged in parallel and spaced apart along X direction, and each support strip of the plurality of support strips extends along Y direction; The support strip is correspondingly arranged with the protrusion.

4. The sliding panel assembly of claim 1, wherein, The fixed casing comprises guide structure connected with the mounting structure, the guide structure comprises a plurality of guide strips, the plurality of guide strips are arranged in parallel and spaced apart along Y direction, and each guide strip of the plurality of guide strips extends along X direction; The movable casing comprises bottom plate and a plurality of insertion strips, the plurality of insertion strips are arranged on the side of the bottom plate facing the support structure, the plurality of insertion strips are arranged in parallel and spaced apart along Y direction, and each insertion strip of the plurality of insertion strips extends along X direction; At least one insertion strip is distributed in the interval region between any adjacent two guide strips.

5. The sliding panel device of claim 2 or 3, wherein, The fixed casing comprises guide structure connected with the mounting structure, the guide structure comprises a plurality of guide strips, the plurality of guide strips are arranged in parallel and spaced apart along Y direction, and each guide strip of the plurality of guide strips extends along X direction; The movable casing comprises a bottom plate and a plurality of insertion strips arranged on the side of the bottom plate facing the support structure, the plurality of insertion strips are arranged in parallel along the Y direction, and each insertion strip of the plurality of insertion strips extends along the X direction; At least one insertion strip is arranged in the interval region between any two adjacent guide strips.

6. The sliding panel device of claim 5, wherein, The outer support structure abuts against the support part along the Y direction of the first insertion strip of the plurality of insertion strips. During movement of the movable casing relative to the fixed casing along the X direction, the flexible display module switches between the rolled-up state and the unfolded state. When the flexible display module is in the unfolded state, the outer support structure abuts against the support part.

7. The sliding panel device of claim 6, wherein, When the flexible display module is in the rolled-up state, the insertion strips of the movable casing and the guide strips of the fixed casing are matched, the insertion strips are inserted between two adjacent guide strips, and the outer support structure is arranged between the first insertion strip of the plurality of insertion strips and the first guide strip of the plurality of guide strips along the Y direction. When the flexible display module is in the unfolded state, the insertion strips of the movable casing and the guide strips of the fixed casing are staggered, the outer support structure abuts against the support part to provide support force along the Y direction to the support structure.

8. The sliding panel device of claim 7, wherein, The outer support structure comprises a spring block, a connecting piece and an elastic piece. When the flexible display module is in the rolled-up state, the spring block is arranged between the first insertion strip and the first guide strip, the connecting piece is arranged in the spring block along the Y direction, the connecting piece partially extends into the first insertion strip, a gap is formed between the spring block and the first insertion strip, the elastic piece is arranged at the gap, and the elastic piece has elastic potential energy for moving the spring block away from the first insertion strip.

9. The sliding panel device of claim 8, wherein, The connecting piece has a stepped surface, the spring block has a stepped hole, the connecting piece penetrates through the stepped hole, the diameter of the end surface of the stepped hole facing the first insertion strip is smaller than the diameter of the other end surface of the stepped hole, the stepped surface and the stepped hole limit the movement path length of the connecting piece in the stepped hole, and the elastic piece has a springing distance smaller than the movement path length.

10. The sliding panel device of claim 9, wherein, The spring block has a first inclined surface, and the first inclined surface is parallel to a second inclined surface of the first guide strip.

11. The sliding panel device according to any one of claims 6-10, wherein, There are two outer support structures, and the outer support structures are arranged at the first and last insertion strips of the plurality of insertion strips along the Y direction.

12. The sliding panel device of claim 6, wherein, When the flexible display module is in the rolled-up state, the insertion strips of the movable casing and the guide strips of the fixed casing are matched, the insertion strips are inserted between two adjacent guide strips, and the outer support structure is arranged between the first guide strip of the plurality of guide strips and the sliding rail along the Y direction. When the flexible display module is in the unfolded state, the insertion strips of the movable casing and the guide strips of the fixed casing are staggered, the outer support structure abuts against the support part to provide support force along the Y direction to the support structure.

13. The sliding panel device of claim 12, wherein, The outer support structure comprises a spring block and a torsion spring. The first guide strip is provided with a positioning column. One end of the torsion spring is connected with the first insertion strip, the torsion spring passes around the positioning column, and the other end of the torsion spring is connected with the elastic block.

14. The sliding panel device of claim 13, wherein, The elastic block has a protrusion, and the bottom plate of the movable casing has a groove corresponding to the protrusion. Alternatively, the elastic block has a groove, and the bottom plate of the movable casing has a protrusion corresponding to the groove.

15. The sliding panel assembly of any one of claims 1-3, wherein, A push rod is further included. The push rod is detachably arranged on the side of the movable casing away from the fixed casing, the outer surface of the push rod is matched with the support structure, and the push rod is always in contact with the support structure.

16. A display device comprising: The sliding and rolling device includes the flexible display module. The flexible display module is arranged on the side of the support structure and the fixed casing in the sliding and rolling device, and the sliding and rolling device can assist the flexible display module to slide, roll up and unroll.

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