CN106941540B

CN106941540B - Shell assembly, display device and mobile terminal

Info

Publication number: CN106941540B
Application number: CN201710057611.3A
Authority: CN
Inventors: 林煜桂
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2017-01-26
Filing date: 2017-01-26
Publication date: 2020-02-14
Anticipated expiration: 2037-01-26
Also published as: CN106941540A

Abstract

The invention discloses a shell assembly, a display device and a mobile terminal, wherein the shell assembly comprises a first shell, a second shell and a connecting piece connected between the first shell and the second shell, the first shell and the second shell are mutually overturned through the connecting piece, a first positioning mechanism is arranged between the connecting piece and the first shell, the first positioning mechanism positions the first shell relative to the connecting piece, a second positioning mechanism is arranged between the connecting piece and the second shell, and the second positioning mechanism positions the second shell relative to the connecting piece so as to enable the first shell and the second shell to be overturned and positioned. First positioning mechanism is right the connecting piece with first casing location, second positioning mechanism is right the connecting piece with second casing location, first casing is relative second casing upset location makes first casing with second casing upset state can be stable, has improved user experience.

Description

Shell assembly, display device and mobile terminal

Technical Field

The invention relates to the field of electronic equipment, in particular to a shell assembly, a display device and a mobile terminal.

Background

At present, in a foldable mobile phone, a display screen of the mobile phone is folded in half, so that the mobile phone is miniaturized, and a user can conveniently carry the mobile phone. Under the general condition, folding cell-phone utilizes first casing and the mutual upset of second casing, realizes folding, and the upset angle of first casing and second casing is difficult for controlling, leads to folding condition unstable of folding cell-phone. The related art foldable devices have drawbacks and need to be improved.

Disclosure of Invention

The embodiment of the invention provides a shell assembly, which comprises a first shell, a second shell and a connecting piece connected between the first shell and the second shell, wherein the first shell and the second shell are mutually overturned through the connecting piece, a first positioning mechanism is arranged between the connecting piece and the first shell, the first positioning mechanism positions the first shell relative to the connecting piece, a second positioning mechanism is arranged between the connecting piece and the second shell, and the second positioning mechanism positions the second shell relative to the connecting piece so as to overturn and position the first shell and the second shell.

The embodiment of the invention provides a display device, wherein the display device comprises the shell assembly, and the display device further comprises a flexible display screen fixed on the first shell, the connecting piece and the second shell.

The embodiment of the invention also provides a mobile terminal, wherein the mobile terminal comprises the display device, and the mobile terminal further comprises an electronic component, wherein the electronic component is fixed on the shell component and electrically connected with the flexible display screen so as to control the operation of the flexible display screen.

According to the shell assembly, the display device and the mobile terminal provided by the embodiment of the invention, the connecting piece and the first shell are positioned through the first positioning mechanism, the connecting piece and the second shell are positioned through the second positioning mechanism, and the first shell is overturned and positioned relative to the second shell, so that the overturning state of the first shell and the second shell can be stable, and the user experience is improved.

Drawings

In order to more clearly illustrate the technical solution of the invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is an exploded view of a mobile terminal provided by the present invention;

FIG. 2 is an assembled schematic view of a first housing of the mobile terminal of FIG. 1;

FIG. 3 is a schematic cross-sectional view of the first housing of FIG. 2;

FIG. 4 is an assembly view of another embodiment of the first housing

FIG. 5 is an exploded schematic view of the first housing of FIG. 2;

FIG. 6 is an exploded schematic view of another embodiment of a first housing;

FIG. 7 is an exploded schematic view of a first sliding bracket of the first housing of FIG. 5;

FIG. 8 is an exploded schematic view of another embodiment of a first sliding bracket;

FIG. 9 is a schematic cross-sectional view of another embodiment of a first sliding bracket;

FIG. 10 is an exploded schematic view of a second sliding bracket of the first housing of FIG. 5;

FIG. 11 is an exploded schematic view of another embodiment of a second sliding bracket;

FIG. 12 is a schematic cross-sectional view of the first housing and the second housing of FIG. 1 superimposed;

FIG. 13 is another schematic cross-sectional view of the first housing and the second housing of FIG. 1 superimposed;

FIG. 14 is a schematic cross-sectional view of the first housing and the second housing of FIG. 1 open;

FIG. 15 is another schematic cross-sectional view of the first housing and the second housing of FIG. 1 open;

FIG. 16 is another exploded view of the first sliding bracket of the first housing of FIG. 5;

FIG. 17 is a cross-sectional schematic view of a first sliding bracket of the first housing of FIG. 5;

FIG. 18 is a schematic cross-sectional view of another embodiment of a second sliding bracket;

FIG. 19 is a schematic cross-sectional view of another embodiment of a first sliding bracket;

FIG. 20 is a schematic cross-sectional view of another embodiment of a first sliding bracket;

fig. 21 is a partially enlarged schematic view of a portion a of fig. 13;

fig. 22 is a partially enlarged schematic view of a portion B of fig. 15;

FIG. 23 is a schematic cross-sectional view of another embodiment of a first sliding bracket;

fig. 24 is a schematic cross-sectional view of a second housing of the mobile terminal of fig. 1;

fig. 25 is a schematic view of a state in which a first housing and a second housing of the mobile terminal of fig. 1 are overlapped;

fig. 26 is a schematic view illustrating a state in which a first housing and a second housing of the mobile terminal of fig. 1 are opened;

fig. 27 is an exploded schematic view of a second housing of the mobile terminal of fig. 1;

fig. 28 is an assembled schematic view of the second housing of the mobile terminal of fig. 1;

fig. 29 is a schematic view of a flexible board member of a connection module of the mobile terminal of fig. 1;

fig. 30 is a schematic view of a connection member of a connection module of the mobile terminal of fig. 1;

FIG. 31 is a partial schematic view of the connector of FIG. 30;

FIG. 32 is a schematic cross-sectional view of the attachment member of FIG. 30 assembled with a first sliding bracket;

FIG. 33 is another assembled cross-sectional view of the connector and first sliding bracket of FIG. 30;

FIG. 34 is a partial schematic view of another embodiment connector;

FIG. 35 is a cross-sectional view of another embodiment of a first sliding bracket and first sliding plate;

FIG. 36 is a cross-sectional view of the first sliding bracket and first sliding plate of FIG. 35;

FIG. 37 is a partially exploded schematic view of the connector of FIG. 30

FIG. 38 is an exploded schematic view of a first damping assembly of the linkage of FIG. 37;

FIG. 39 is a schematic partial cross-sectional view of the connecting chain and first damping assembly of FIG. 37;

FIG. 40 is an exploded schematic view of another embodiment of a kink and first damping assembly;

FIG. 41 is an exploded schematic view of the connector of FIG. 30;

FIG. 42 is an exploded schematic view of the first link of the connection of FIG. 37 and the first embodiment limiter;

FIG. 43 is an exploded view of the flexible plate member with the first shaft and the limiting member of the first embodiment;

fig. 44 is an enlarged schematic view of portion C of fig. 43;

FIG. 45 is a schematic perspective view of the flexible plate member with the first shaft and the limiting member of the first embodiment;

FIG. 46 is a schematic view of a partial assembly of the flexible plate member of FIG. 1 with a second embodiment of a limiting member;

fig. 47 is a schematic partial cross-sectional view of the first housing, second housing, flexible sheet member and second embodiment limiting member of the mobile terminal of fig. 1;

FIG. 48 is a partial schematic view of the flexible plate member of FIG. 1 and a third embodiment of a limiting member;

FIG. 49 is a schematic partial cross-sectional view of the flexible display, flexible sheet member, and limiting member of the third embodiment of FIG. 1;

FIG. 50 is a schematic view of an enclosure of the mobile terminal of FIG. 1;

FIG. 51 is a schematic cross-sectional view of the package of FIG. 50 and the flexible sheet of FIG. 1;

FIG. 52 is a partial schematic view of another embodiment of a flexible plate member and limiting member;

fig. 53 is a schematic view of an unfolded state of a flexible display of the mobile terminal of fig. 1;

fig. 54 is a schematic view of a bent state of a flexible display screen of the mobile terminal of fig. 1;

fig. 55 is a schematic view of a folded state of a flexible display screen of the mobile terminal of fig. 1

Fig. 56 is a schematic view of an opened state of a flexible display screen of the mobile terminal of fig. 1;

fig. 57 is a schematic diagram of a mobile terminal of another embodiment;

FIG. 58 is an exploded view of a display screen assembly of the mobile terminal of FIG. 1;

fig. 59 is an exploded schematic view of electronic components of the mobile terminal of fig. 1.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Referring to fig. 1, a mobile terminal 900 according to the present invention includes a display device and an electronic component 300. The display device includes a housing assembly 100 and a display assembly 200. The housing assembly 100 includes a first housing 10 and a second housing 20, and a connection module 30 connected between the first housing 10 and the second housing 20. The second casing 20 can be folded or unfolded with respect to the first casing 10. The connecting module 30 can deform as the second housing 20 is folded or unfolded relative to the first housing 10, and restricts the second housing 20 from being detached from the first housing 10. The connection module 30 includes a flexible board 31 fixedly connecting the first housing 10 and the second housing 20, and a connection member 32 supporting the flexible board 31. The flexible plate member 31 is bent or unfolded as the first casing 10 and the second casing 20 are folded or unfolded, and the connecting member 32 is contracted or unfolded between the first casing 10 and the second casing 20 to support the flexible plate member 31 when the first casing 10 and the second casing 20 are folded. The fact that the connecting member 32 is contracted to the first casing 10 and the second casing 20 means that when the first casing 10 is bent with respect to the second casing 20, a space between the first casing 10 and the second casing 20 is reduced, and a part of the connecting member 32 is contracted to the inside of the first casing 10 or the inside of the second casing 20, or two parts of the connecting member 32 are respectively contracted to the first casing 10 and the second casing 20. The fact that the connecting member 32 is unfolded from the first casing 10 and the second casing 20 means that when the first casing 10 is opened with respect to the second casing 20, there is a portion of the connecting member 32 unfolded from the inside of the first casing 10 to the outside, or there is a portion of the connecting member 32 unfolded from the inside of the second casing 20 to the outside, or there are two portions respectively unfolded from the inside of the first casing 10 and the inside of the second casing 20 to the outside. The first display assembly 200 includes a flexible display screen 40 sequentially laid on the first housing 10, the connection module 30 and the second housing 20. The flexible display screen 40 is folded or unfolded when the first casing 10 and the second casing 20 are turned over. The electronic assembly 300 is fixed to the housing assembly 100 and electrically connected to the flexible display 40 to control the operation of the flexible display 40.

It is understood that the mobile terminal 900 may be a multi-purpose mobile phone implementing a small screen display, a large screen display, or a bent screen display, and may present various use functions. For example: when the flexible display screen 40 is folded, the first housing 10 and the second housing 20 are folded together, and the mobile terminal 900 can be used as a mobile phone, so that the mobile terminal is convenient for a user to carry and occupies a small space. When the flexible display screen 40 is bent at a certain angle, the first housing 10 is opened relative to the second housing 20 and forms a certain included angle with each other, and the mobile terminal 900 can be used as a notebook computer. When the mobile terminal 900 is in the unfolded state on the flexible display screen 40, the first housing 10 is opened relative to the second housing 20 and is flush with the second housing, and the mobile terminal 900 can be used as a tablet computer to increase the display area, obtain more display contents, and improve the user experience. Of course, the mobile terminal 900 may also be a multi-purpose tablet computer, a multi-purpose notebook computer, or other multi-function electronic devices with multiple mode switching functions.

The housing assembly 100 carries the display assembly 200 while protecting the electronic assembly 300. The first casing 10 and the second casing 20 support both ends of the flexible display screen 40, respectively. The connection module 30 can be bent or unfolded and supports the connection module between the two ends of the flexible display screen 40. Two opposite sides of the flexible plate 31 are respectively and fixedly connected to the first housing 10 and the second housing 20. The flexible plate 31 utilizes the characteristic of flexibility and bendability of itself, so that the first housing 10 can be turned over relative to the second housing 20, and the first housing 10 is overlapped, or forms an included angle, or forms an open shape relative to the second housing 20. Two opposite sides of the connecting member 32 are slidably connected to the first casing 10 and the second casing 20, respectively, so that the connecting member 32 can be retracted or extended between the first casing 10 and the second casing 20 as the first casing 10 is turned over relative to the second casing 20. In one embodiment, the first housing 10 may be a hard housing, and the second housing 20 may be a hard housing. The first casing 10 and the second casing 20 can stably support both ends of the flexible display screen 40.

In one embodiment, referring to fig. 2 to 4, the first housing 10 includes a first front shell 11 and a first rear shell 12 covering the first front shell 11. A first receiving cavity 13 is formed between the first front case 11 and the first rear case 12, and the electronic component 300 (see fig. 1) is partially received in the first receiving cavity 13. The first front case 11 includes a first supporting surface 111 supporting one end of the flexible display 40 (see fig. 1). The first rear shell 12 covers the first front shell 11 and the side opposite to the first supporting surface 111. The first rear case 12 has a first rear face 121 opposite the first front case 11. The first housing 10 further includes a first inner side portion 14 and a first outer side portion 15 that is remote from the connection module 30 (see fig. 1) with respect to the first inner side portion 14. The first inner side portion 14 is fixedly connected to one side of the flexible plate 31 (see fig. 1) and slidably connected to one side of the connecting member 32 (see fig. 1). The first outer side portion 15 is used to fixedly connect an edge of one end of the flexible display screen 40, so that one end of the flexible display screen 40 is stacked on the first casing 10, and the first casing 10 supports one end of the flexible display screen 40.

When the first housing 10 is turned over with respect to the second housing 20 (see fig. 1), the space between the first housing 10 and the second housing 20 is compressed and reduced, and in order to prevent the first housing 10 from pressing and deforming the connecting member 32, the first inner side portion 14 of the first housing 10 partially receives one side of the connecting member 32, so that one side of the connecting member 32 can partially slide into the first inner side portion 14. The first inner side portion 14 is provided with a first receiving portion 16. One side of the connecting member 32 close to the first casing 10 is slidably connected to the first receiving portion 16, so that when the connecting member 32 is bent, a part of the connecting member can slide into the first receiving portion 16 of the first inner side portion 14, and the connecting member 32 can be folded between the first casing 10 and the second casing 20, thereby preventing the connecting member 32 from being deformed due to extrusion.

In one embodiment, the connecting member 32 may be provided with a receiving portion near the first housing 10, and the receiving portion receives the first inner side portion 14 of the first housing 10. The receiving portion may be formed of a receiving groove provided in the connector 32.

In the present embodiment, the first housing portion 16 includes two first slide grooves 141 provided at both ends of the first inner portion 14, and a plurality of second slide grooves 142 arranged in parallel between the two first slide grooves 141. The opening direction of the first link 141 and the opening direction of the second link 142 are substantially parallel, the first link 141 opens in the first inner side portion 14 toward the first outer side portion 15, and the second link 142 opens in the first outer side portion 15. The two first sliding grooves 141 guide both ends of the link 32 to prevent the link 32 from being deviated from the first housing 10 in a direction substantially parallel to the length of the first housing 10. The plurality of second sliding grooves 142 guide the connecting member 32 between both ends thereof, so that the connecting member 32 can be smoothly retracted or extended between the first casing 10 and the second casing 20.

In one embodiment, as shown in fig. 4, the first housing 10 may further have only one sliding groove 140 at the first inner side portion 14, and the sliding groove 140 is slidably connected to one side of the connecting member 32 (see fig. 1) to realize that the connecting member 32 can be partially retracted to the first housing 10.

In this embodiment, referring to fig. 5, the first inner portion 14 includes two first fixing portions 143 and a second fixing portion 144 fixed between the two first fixing portions 143. The first casing 10 further includes a first sliding bracket 17 fixed to the first fixing portion 143 and a second sliding bracket 18 fixed to the second fixing portion 144. In one embodiment, the first front housing 11 has an inner sidewall 112 proximate the connector 32 (see FIG. 1). Each of the first fixing portions 143 is a receiving groove formed at one end of the first inner sidewall 112 in the length direction. Three first bosses 145 are circumferentially arranged on the inner side wall of each first fixing portion 143. The first slide holder 17 is engaged with the first fixing portion 143, and is screwed to the three first bosses 145. The first fixing portion 143 penetrates the first front case 11 in the thickness direction, and the first rear case 12 supports the first sliding bracket 17, thereby improving structural stability of the first housing 10. The second fixing portion 144 includes two second bosses 146 disposed on the first inner sidewall 112. The two second bosses 146 are oppositely disposed, and the two second bosses 146 are respectively located adjacent to the two first fixing portions 145. The two second bosses 146 are respectively screwed to two ends of the second sliding bracket 18. The two second bosses 146 are further respectively in screw connection with the two first sliding brackets 17, so that the first housing 10 is simple in structure and stability is improved. The two first sliding grooves 141 are respectively formed in the two first sliding brackets 17, and the plurality of second sliding grooves 142 are formed in parallel in the second sliding bracket 18. One side of the connecting member 32 close to the first casing 10 can be inserted into the first sliding bracket 17 and the second sliding bracket 18 and can slide in the first sliding bracket 17 and the second sliding bracket 18. By utilizing the first sliding support 17 and the second sliding support 18 to be detachably connected to the first front shell 11, the first sliding support 17 and the second sliding support 18 can be conveniently maintained, and the connecting piece 32, the first sliding support 17 and the second sliding support 18 can be conveniently assembled. Of course, in an embodiment, as shown in fig. 6, the first fixing portion 143 and the second fixing portion 144 may also be disposed on the first rear shell 12, and the first sliding bracket 17 and the second sliding bracket 18 may be detachably connected to the first rear shell 12.

Referring to fig. 7, in the present embodiment, the first sliding bracket 17 includes a first base 171, a first cover 172 covering the first base 171, and two sliding guide strips 173 fixed between the first base 171 and the first cover 172. The first base 171 and the first cover plate 172 are locked by screws 174, so that the first base 171 and the first cover plate 172 are detachably connected, maintenance of the first sliding support 17 is facilitated, the first sliding groove 141 and the sliding guide strip 173 are cleaned conveniently, and the connecting piece 32 (see fig. 1) and the first sliding support 17 can slide smoothly. Four corners of the first base 171 are fastened to three first bosses 145 (see fig. 5) and one second boss 146 (see fig. 5) by screws. The first base 171 includes a bottom plate 1711 and two fixing blocks 1712 disposed on the bottom plate 1711. The two fixing blocks 1712 are disposed oppositely and respectively located at two sides of the bottom plate 1711 in the sliding direction of the connecting member 32 (see fig. 1). After the first base 171 and the first cover 172 are closed, the fixing block 1712 abuts against the first cover 172. The two slide guides 173 may be fastened to the two fixing blocks 1712 by screws, respectively. The length direction of the slide guide 173 is substantially parallel to the sliding direction of the connecting member 32. The first sliding groove 141 (see fig. 2) is formed between the two guide sliding bars 173. In one embodiment, the slider 173 includes a first side 1731 fixedly connected to the anchor block 1712 and a second side 1732 disposed opposite the first side 1731. The second side 1732 is provided with a groove 175. The length direction of the groove 175 extends along the length direction of the slide guide 173. The two guide sliding strips 173 have the same structure, and after the two guide sliding strips 173 are assembled with the first base 171, the grooves 175 of the two guide sliding strips 173 are oppositely arranged. The two grooves 175 guide the portion of the link 32 that slides into the first slide groove 141, and reduce the frictional resistance of the link 32 with the first slide bracket 17. The runner 173 is made of a thermoplastic crystalline polymer. The sliding guide strip 173 has properties of wear resistance, self-lubrication, heat resistance, and the like, increases the sliding guide of the connecting member 32, absorbs the frictional heat of the connecting member 32, and improves the service life of the first sliding support 17.

In one embodiment, as shown in fig. 8, the first sliding bracket 17 may be made of a thermoplastic crystalline polymer, and the first base 171 and the first cover 172 guide one side of the connecting member 32 (see fig. 1) and reduce the sliding friction force of the first sliding bracket 17 and the connecting member 32. The fixing blocks 1712 of the first base 171 have guide side surfaces 1713, and the guide side surfaces 1713 of the two fixing blocks 1712 are disposed to face each other. The two guide side surfaces 1713 form the first slide groove 141 therebetween (see fig. 2). One side of the connecting member 32 slides into the first sliding groove 141 and is attached to the guiding side surfaces 1713, so that the sliding friction of the connecting member 32 is reduced by the two guiding side surfaces 1713 of the first base 171.

In one embodiment, as shown in fig. 9, two guide vanes 1718 are fixed between the first base 171 and the first cover 172. The two sliding guide pieces 1718 are respectively attached to the bottom plate 1711 of the first base 171 and the first cover 172. The bottom plate 1711 of the first base 171 is provided with a screw post 1715 extending toward the first cover 172, and the screw 174 passes through the first cover 172 and is screwed to the screw post 1715. Each of the slide guide pieces 1713 is provided with a through hole 1716 for the screw post 1715 to pass through. The area between the two guide vanes 1718 forms the first sliding groove 141 (see fig. 1), which guides one side of the connecting member 32.

Referring to fig. 10, in the present embodiment, the second sliding bracket 18 includes a second base 181 and a second cover 182 fixed to the second base 181. Two ends of the second base 181 opposite to each other are respectively locked to two ends of the second cover 182 opposite to each other by screws, and two ends of the second base 181 opposite to each other and two ends of the second cover 182 opposite to each other are jointly locked to the two second bosses 146 of the first inner sidewall 112 (see fig. 5). The length direction of the second base 181 is substantially parallel to the length direction of the first inner sidewall 111. The length direction of the second cover plate 182 is substantially parallel to the length direction of the first inner side wall 111. The second base 181 is close to the first rear case 12 opposite to the second cover 182. The plurality of second sliding grooves 142 (see fig. 5) are opened on the second base 181 and arranged along the length direction of the second base 181. The second base 181 is made of a thermoplastic crystalline polymer, and the second base 181 has properties of wear resistance, self-lubrication, heat resistance, and the like, increases the sliding guide of the connecting member 32, absorbs the heat of friction with the connecting member 32, and prolongs the service life of the first sliding bracket 17. The second cover plate 182 is a hard plate. The second cover 182 provides a supporting force for the second base 181, prevents the second base 181 from being broken, and secures the second base 181 to the second fixing portion 144.

In one embodiment, as shown in fig. 11, the second base 181 has a top surface 1811 facing the second cover 182, the second cover 182 has a bottom surface 1821 facing the second base 181, and an adhesive layer 183 is adhered between the top surface 1811 and the bottom surface 1821. The second base 181 and the second cover 182 are adhered to each other by the adhesive layer 183. Of course, in other embodiments, the second base 181 and the second cover 182 may also be integrally formed.

Referring to fig. 12 and 15, one side of the connecting element 32 slides relative to the first inner side 14 of the first casing 10 as the first casing 10 is turned over relative to the second casing 20. The larger the angle at which the first housing 10 is flipped relative to the second housing 20, the greater the distance the connector 32 slides relative to the first inner side 14. As shown in fig. 12 and 13, when the first casing 10 and the second casing 20 are folded from the open state, one side of the connecting member 32 slides from the first inner side portion 14 toward the first outer side portion 15, that is, one side of the connecting member 32 retracts into the first casing 10, and after the first casing 10 is folded toward the second casing 20, the first casing 10 and the second casing 20 cannot be continuously turned, and one side of the connecting member 32 cannot be continuously slid toward the first outer side portion 15. The first sliding groove 141 has a preset depth H, the preset depth H is greater than the sliding distance of the connecting member 32, and the part of the connecting member 32 sliding into the first sliding groove 141 does not collide with the first front shell 11, i.e., the first front shell 11 is not damaged. As shown in fig. 14 and 15, when the first casing 10 and the second casing 20 are turned from the folded state to the opened state, one side of the connecting member 32 slides from being close to the first outer side portion 15 to being far from the first outer side portion 15. When the first casing 10 and the second casing 20 are opened mutually, the end portion of one side of the connecting member 32 is close to the opening of the first sliding groove 141 and the opening of the second sliding groove 142, the first casing 10 and the second casing 20 can be continuously turned over to be opened to form an obtuse included angle, and the end portion of one side of the connecting member 32 can also continuously slide towards the opening of the first sliding groove 141 and the opening of the second sliding groove 142. In order to prevent one side of the connecting element 32 from sliding out of the first sliding groove 141 and the second sliding groove 142, i.e. to prevent one side of the connecting element 32 from separating from the first inner side portion 14 of the first casing 10, the casing assembly 30 includes a first position-limiting mechanism, which includes a first position-limiting portion 19 disposed on the first casing 10. The first limiting portion 19 is matched with one side of the bending support component 32, which is slidably connected with the first casing 10, so as to limit one side of the connecting component 32 to be separated from the first casing 10. Meanwhile, in order to control the sliding distance of one side of the connecting member 32 relative to the first housing 10, the first housing 10 is turned to a preset included angle relative to the second housing 20. A first positioning mechanism is disposed between the first casing 10 and the connecting member 32, and the first positioning mechanism includes a first positioning portion 110. The first positioning portion 110 is disposed on the first housing 10. The first positioning portion 110 is matched with a side of the connecting member 32 slidably connected to the first housing 10, so that the side of the connecting member 32 slidably connected to the first housing 10 is positioned relative to the first housing 10, that is, when the side of the connecting member 32 slides to a preset position of the first housing 10, the first housing 10 is turned over relative to the second housing 20 to form a preset included angle, and the first housing 10 and the second housing 20 can be maintained to form a preset included angle. It is understood that the first housing 10 can be maintained at a plurality of preset included angles with respect to the second housing 20, for example, the first housing 10 can be maintained at any included angle of 0 ° to 240 ° with respect to the second housing 20, for example: 15 °, 26 °, 30 °, 38 °, 109 °, 120 °, 201 °, etc.

Referring to fig. 16 and 17, in the present embodiment, the first limiting portion 19 is disposed on the first sliding bracket 17, and the first limiting portion 19 limits a portion of the connecting member 32 sliding into the first sliding groove 141 to prevent the portion from separating from the first sliding groove 141 (see fig. 2). In one embodiment, the first housing 10 (see fig. 1) is provided with two first limiting portions 19, and the two first limiting portions 19 respectively limit two ends of one side of the connecting member 32. The two first limiting parts 19 limit the position of the connecting element 32, so that the connecting element 32 (see fig. 1) is prevented from being integrally separated from the first casing 10 at the side where the connecting element 32 is slidably connected with the first casing 10. The first housing 10 is simple in structure, and ensures that the connecting member 32 is effectively connected with the first sliding bracket 17. In one embodiment, the first position-limiting portion 19 includes a position-limiting pillar 191 protruding from the base plate 1711 toward the first cover 172 and a protrusion 192 protruding from the first cover 172 toward the base plate 1711. A clamping groove 193 is formed in one end, far away from the bottom plate 1711, of the limiting column 191, and one end, far away from the first cover plate 172, of the protrusion 192 is clamped into the clamping groove 193. The protrusion 192 is engaged with the position-limiting post 191, so that the first position-limiting portion 19 has a stable structure. The position-limiting post 191 may pass through a portion of the connecting member 32 sliding into the first sliding groove 141, that is, the position-limiting post 191 may catch a portion of the connecting member 32 sliding into the first sliding groove 141, so as to prevent the portion of the connecting member 32 sliding into the first sliding groove 141 from separating from the first sliding groove 141. The first cover plate 172 includes an inner side surface 1721 facing the first base 171. The projection 192 is located at a substantial center of the medial side 1721. The end of the limiting column 191 facing the first cover plate 172 is provided with a screw hole 194 penetrating through the first base 171. The screw 174 is screwed on the protrusion 192 of the first base 171 through the screw hole 194, so that the end of the position-limiting column 191 abuts against the protrusion 192. The stability of the limiting column 191 and the protrusion 192 is improved, and the limiting column 191 is prevented from being broken due to the pulling-off of the connecting piece 32. Moreover, the structure of the first sliding bracket 17 is more stable.

In one embodiment, as shown in fig. 18, the first position-limiting portion 19 may also be disposed in the second sliding groove 142. The first position-limiting portions 19 are protruding posts 183 disposed on the second cover 182, and each of the first position-limiting portions 19 correspondingly passes through the second sliding slot 142 of the second base 181. The first stopper 19 may be fastened to a portion of the connecting member 32 (see fig. 1) that slides into the second sliding groove 142, so as to restrict the portion of the connecting member 32 that slides into the second sliding groove 142 from being separated from the second sliding groove 142.

In one embodiment, as shown in fig. 19, the position-limiting column 191 may also be fixed on the side of the first cover plate 172 facing the first base 171. One end of the limiting column 191 far away from the first cover plate 172 is inserted into the fixing hole 1721 of the bottom plate 1711. The position-limiting column 191 is fixed between the first cover plate 172 and the bottom plate 1711.

In an embodiment, as shown in fig. 20, the first position-limiting portion 19 may also be a position-limiting hole 1723 disposed on the bottom plate 1711, and a length direction of the position-limiting hole 1723 is substantially parallel to a length direction of the first sliding slot 141 (see fig. 2). A part of the connecting piece 32 (see fig. 1) is connected with the limiting hole 1723 in a sliding mode. The stopper hole 1723 restricts a portion of the connecting member 32 from being separated from the stopper hole 1723, so as to restrict the connecting member 32 from being separated from the first housing 10 (see fig. 1).

Referring to fig. 13 and 15, in the present embodiment, the first positioning portion 110 is disposed on the first sliding bracket 17, and the first positioning portion 110 positions a portion of the connecting member 32 sliding into the first sliding groove 141, so that the portion of the connecting member 32 sliding into the first sliding groove 141 can stay at a preset position of the first sliding groove 141. That is, the first housing 10 is provided with two first positioning portions 110, and the two first positioning portions 110 respectively position the two end portions of one side of the connecting member 32, so as to position the whole side of the connecting member 32 slidably connected to the first housing 10, and keep the whole side of the connecting member 32 slidably connected to the first housing 10 at a predetermined position. Moreover, by providing the first positioning portion 110 on the first sliding bracket 17, the positioning portions on a plurality of second carriages 18 are avoided, and the effect of simplifying the structure of the first casing 10 is achieved. And the first shell 10 and the second shell 20 are maintained in an arbitrary included angle shape as the connecting piece 32 is maintained in an arbitrary bent state through the effective connection of the connecting piece 32 and the first sliding bracket 17.

In this embodiment, referring to fig. 16 and 17, a counter bore 1713 is disposed in the fixed block 1712 on a side opposite to the slide bar 173. The bottom end of the counter bore 1713 is provided with a sliding hole 1714 penetrating the fixed block 1712. The slide bore 1714 is provided with a first flange 1715 inwardly of the open end of the counterbore 1713. The base 171 also includes a retainer 1716 removably coupled to the counterbore 1713. The retainer 1716 is screwed into the counterbore 1713 to cover the slide hole 1714. The first positioning portion 110 includes a detent 1101 slidably coupled to the sliding hole 1714, and an elastic member 1102 elastically compressed between the blocking plate 1716 and the detent 1101. The sliding direction of the latch 1101 is substantially perpendicular to the first slide groove 141 (see fig. 2). The latch 1101 slides through the slide guide 173 in a direction away from or toward the stop 1716. A second flange 1103 is arranged on the periphery of one end of the bayonet 1101 connected with the elastic element 1102. The first flange 1715 restricts the second flange 1103 from sliding out of the slide hole 1714 to prevent the bayonet 1101 from disengaging the slide hole 1714. In a state that the bayonet 1101 is connected with the elastic member, as shown in fig. 21, the elastic member 1102 is in a stretched state between the bayonet 1101 and the blocking plate 1716, the elastic member 1102 provides an elastic force to the bayonet 1101, so that the bayonet 1101 slides away from the blocking plate 1716, and the bayonet 1101 can abut against a part of the connecting member 32 sliding into the first sliding groove 141, generate a pressing force to a part of the connecting member 32 sliding into the first sliding groove 141, and make the part stop at the first sliding groove 141 and cannot slide any more; in another state, as shown in fig. 22, the resilient member 1102 is compressed between the detent 1101 and the stop 1716. The click 1101 slides in a direction approaching the blocking plate 1716, and the click 1101 can be separated from the portion of the connecting member 32 sliding into the first slide groove 141, that is, the click 1101 removes the pressing force to the portion so that the portion can slide relative to the first slide groove 141. With continued reference to fig. 16 and 17, in one embodiment, the resilient member 1102 is a rectangular spring. The resilient member 1102 is inserted into the slide hole 1714, and the resilient member 1102 provides a restoring force to the detent 1101 away from the stop 1716. When the elastic member 1102 is elastically compressed, the latch 1101 is close to the flap 1716, and one side of the connecting member 32 can slide relative to the first inner side portion 14 (see fig. 2); when the elastic member 1102 is in the elastically expanded state, the detent 1101 is away from the blocking plate 1716, and the detent 1101 is abutted against the portion of the connecting member 32 sliding into the first sliding groove 141 by the elastic force of the elastic member 17b, so that one side of the connecting member 32 is fixed relative to the first inner side portion 14.

In one embodiment, as shown in FIG. 23, the base 1711 is provided with a slide hole 1724, and the latch 1101 is slidably connected to the slide hole 1724. The flap 1716 is fixed to the side of the base plate 1711 facing away from the first cover plate 172 and covers the sliding hole 1724. The elastic member 1102 is elastically compressed between the latch 1101 and the blocking plate 1716, and the latch 1101 applies an elastic force to the latch 1102, so that the latch 1101 can apply a pressing force to a portion of the connecting member 32 sliding into the first sliding groove 141, thereby positioning the portion of the connecting member 32 (see fig. 1) sliding into the first sliding groove 141.

In this embodiment, with continued reference to fig. 16 and 17, an end of the detent 1101 away from the flap 1716 is hemispherical. When a turning force is applied to the first housing 10 (see fig. 1) or the second housing 20 (see fig. 2), the first housing 10 turns relative to the second housing 20, the turning force acts on the first housing 10 or the second housing 20, and the first housing 10 or the second housing 20 forms a pressing force on the connecting member 32, so that the side of the connecting member 32 close to the first housing 10 is pressed by the pressing force to slide relative to the first housing 10. Since the hemispherical end of the detent 1101 abuts against the portion of the connecting element 32 sliding into the first sliding groove 141 under the elastic action of the elastic element 1102. When a portion of the connecting member 32 sliding into the first sliding groove 141 is pressed, a component force substantially perpendicular to the blocking plate 1716 is generated on the detent 1101 by the semispherical end surface of the detent 1101, and when the component force is larger than the elastic force of the elastic member 1102, the detent 1101 starts to slide toward the blocking plate 1716 by the component force, so that the detent 1101 cancels the pressing force on the connecting member 32, and one side of the connecting member 32 can slide to another predetermined position. Of course, in other embodiments, the end of detent 1101 away from flap 1716 may also be tapered or wedge-shaped or have an inclined surface at its end, and the inclined surface at the end of detent 1101 may separate the pressing force substantially perpendicular to the length of detent 1101 into a component substantially parallel to the length of detent 1101, so as to allow detent 1101 to slide.

Referring to fig. 24, 25 and 26, the second housing 20 includes a second front shell 21 and a second rear shell 22 covering the second front shell 21. A second receiving cavity 23 is formed between the second front case 21 and the second rear case 22, and the electronic component 300 is partially received in the second receiving cavity 23 (see fig. 1). The second front case 21 includes a second supporting surface 211 supporting an end of the flexible display 40 away from the first housing 10. The second rear shell 22 covers the second front shell 21 and the side opposite to the second supporting surface 211. The second rear case 22 has a second rear surface 221 opposite to the second front case 21. As shown in fig. 25, when the first casing 10 and the second casing 20 are folded, the first back surface 121 and the second back surface 221 are attached to each other. The first supporting surface 111 and the second supporting surface 211 are respectively located at two sides of the mobile terminal 900 and support the flexible display 40 together. As shown in fig. 26, when the first casing 10 and the second casing 20 are opened, the first supporting surface 111 is flush with the second supporting surface 211, and the first supporting surface 111 and the second supporting surface 211 jointly support the flexible display screen 40, so that the flexible display screen 40 is located outside the first casing 10 and the second casing 20.

In one embodiment, the first back surface 121 of the first housing 10 is provided with a protrusion 122. The protruding portion 122 may be a structure in which an end of a camera lens, an end of an exposure lamp, or an end of a key protrudes from the first back surface 121, and may effectively reduce a distance from the first supporting surface 111 to the first back surface 121, so that the first housing 10 is thinner, and user experience is improved. In order to make the second back surface 221 completely fit to the first back surface 121, the second back surface 221 is provided with a groove 222 matching with the protrusion 122. The depth of the groove 222 may be greater than or equal to the height of the protrusion 122. The protrusion 122 is prevented from abutting against the second housing 20 when the first housing 10 and the second housing 20 are folded, the protrusion 122 is prevented from damaging the second housing 20, the service life of the housing assembly 100 is improved, and the appearance performance of the housing assembly 100 is improved.

Referring to fig. 27 and 28, the second housing 20 further includes a second inner side portion 24 connected to the connecting module 30 and a second outer side portion 25 opposite to the second inner side portion 24 and away from the connecting module 30. The second inner side portion 24 is fixedly connected to a side of the flexible plate 31 (see fig. 1) away from the first housing 10 (see fig. 1), and slidably connected to a side of the connecting member 32 (see fig. 1). The second outer side portion 25 is configured to be fixedly connected to an edge of an end of the flexible display screen 40 (see fig. 1) away from the first housing 10, so that the end of the flexible display screen 40 away from the first housing 10 is stacked on the second housing 20, and the second housing 20, the first housing 10 and the connecting module 30 (see fig. 1) jointly support the flexible display screen 40.

Since the space between the second housing 20 and the first housing 10 is compressed and reduced when the second housing 20 is turned over with respect to the first housing 10, in order to avoid the second housing 20 from generating a compressive deformation on the connecting member 32, the second inner side portion 24 of the second housing 20 partially receives one side of the connecting member 32, and allows one side of the connecting member 32 to partially slide into the second inner side portion 24. The second inner side portion 24 also opens with a second receiving portion 26 toward the second outer side portion 25. The connecting member 32 is slidably connected to the second receiving portion 26 at a side close to the second housing 10. When the connecting element 32 is bent, a part of the connecting element 32 can slide into the second receiving portion 26 of the second inner side portion 24, so that the connecting element 32 can be folded between the first casing 10 and the second casing 20, and the connecting element 32 is prevented from being deformed due to extrusion.

In the present embodiment, the second inner side portion 24 of the second casing 20 is provided in the same configuration as the first inner side portion 14. The third sliding bracket 111 and the fourth sliding bracket 112 are fixed to the second front case 21, and the second inner side portion 24 of the second casing 20 is slidably connected to a side of the connecting member 32 away from the first casing 10 through the third sliding bracket 111 and the fourth sliding bracket 112. The third sliding bracket 113 has the same structure as the first sliding bracket 17. The fourth sliding bracket 114 is identical in structure to the second sliding bracket 18.

Referring to fig. 29, in this embodiment, the flexible plate 31 includes a first fixing edge 311 and a second fixing edge 312 opposite to the first fixing edge 311, and two opposite connecting side edges 313 connected between the first fixing edge 311 and the second fixing edge 312. The first fixing edge 311 is fixedly connected to the first inner side portion 14 (see fig. 2) of the first housing 10 (see fig. 2), and the second fixing edge 312 is fixedly connected to the second inner side portion 24 (see fig. 28) of the second housing 20 (see fig. 28). In one embodiment, the first fixed edge 311 is welded to the second cover plate 182 (see FIG. 7) and the first cover plate 172 (see FIG. 7) of the first inner side portion 14. The second fixed edge 312 is welded to the second inner side portion 24. When the first housing 10 is turned over relative to the second housing 20, the first fixing edge 311 is closed or opened relative to the second fixing edge 312, so that the flexible plate 31 is bent or unfolded, and the connecting member 32 is driven to bend or unfold. The connecting side edges 313 are aligned with the side edges of the flexible display 40, increasing the support area for the flexible display 40 and increasing the appearance of the housing assembly 100 (see fig. 1). The flexible plate 31 is an elastic steel sheet. The flexible plate 31 has a supporting force for the flexible display screen 40 and is convenient to bend, so as to improve the user experience. In order to reduce the elastic stress of the flexible plate 31 after bending, the elastic force of the flexible plate 31 against the flexible display screen 40 (see fig. 1) after bending is reduced. The flexible plate member 31 is provided with a plurality of strip-shaped through holes 314 arranged at intervals along a direction substantially parallel to the first fixing edge 311. The length direction of each strip-shaped through hole 314 is approximately parallel to the connecting side edge 313. Of course, in an embodiment, the first fixing edge 311 and the second fixing edge 312 of the flexible plate 31 may also be respectively locked to the first housing 10 and the second housing 20 by screws; the strip-shaped through holes 314 can also be replaced by round through holes.

Referring to fig. 30 and 31, in the present embodiment, the connecting member 32 includes a first connecting portion 3211 and a second connecting portion 3212 (shown by a dashed line in fig. 30). The first connection portion 3211 and the second connection portion 3212 are slidably connected to the first housing 10 (see fig. 1) and the second housing 20 (see fig. 1), respectively. In one embodiment, the first connecting portion 32111 is provided with a first sliding plate 3213 corresponding to the first sliding groove 141 (see fig. 2) and a plurality of second sliding plates 3214 corresponding to the second sliding grooves 142 (see fig. 2). The length direction of the first sliding plate 3213 is substantially parallel to the sliding guide 173. The first sliding plate 3213 is substantially parallel to the first supporting surface 111. The first sliding plate 3213 has two sliding sidewalls 3221 disposed opposite to each other on both sides in the length direction. The sliding side wall 3221 slides relative to the groove 175 (see fig. 7) of the slide guiding bar 173 (see fig. 7), and the sliding side wall 3221 cooperates with a bottom surface of the groove 175 to facilitate the sliding of the first sliding plate 3213 between the two slide guiding bars 173 in the first sliding groove 141. Each of the second sliding plates 3214 is substantially parallel to the first supporting surface 111. And the length direction of each second sliding plate 3214 is substantially parallel to the length direction of the first sliding plate 3213. The plurality of second sliding plates 3214 are arranged between two first sliding plates 3213 at intervals. The outer peripheral side wall of the second sliding plate 322 is engaged with the inner peripheral side wall of the second sliding groove 142 (see fig. 2) to ensure that the second sliding plate 3214 is smoothly slidably coupled to the second sliding groove 142.

In one embodiment, the second connecting portion 3212 is provided with two third sliding plates 3215 and a plurality of fourth sliding plates 3216 between the two third sliding plates 3215. The third sliding plate 3215 is slidably connected to the first sliding groove 141 of the third sliding bracket 111 (see fig. 2). The fourth sliding plate 3216 is correspondingly slidably connected to the second sliding slot 142 of the fourth sliding bracket 114 (see fig. 2). The third sliding plate 3215 has the same structure as the first sliding plate 3213. The fourth sliding plate 3216 has the same structure as the second sliding plate 3214.

In order to prevent the first connection portion 3211 and the second connection portion 3212 from being separated from the first casing 10 and the second casing 20, respectively, and to position the first connection portion 3211 and the second connection portion 3212 with respect to the first casing 10 and the second casing 20, respectively, and maintain the first casing 10 at a predetermined angle with respect to the second casing 20. The first position-limiting mechanism further includes a second position-limiting portion 324. The first positioning mechanism further includes a second positioning portion 325. The first connecting portion 3211 is provided with a second stopper portion 324 engaged with the first stopper portion 19 (see fig. 13 and 15) and a second positioning portion 325 engaged with the first positioning portion 110 (see fig. 13 and 15). The second limiting portion 324 is used to cooperate with the first limiting portion 19 to limit the connecting element 32 from separating from the first casing 10 or/and the second casing 20. By the cooperation of the second positioning portion 325 and the first positioning portion 110, the connecting member 32 can be bent or unfolded, and the first casing 10 can be maintained in a predetermined angle shape with respect to the second casing 20. The second housing 20 has the same structure as the first housing 10, that is, the housing assembly 100 includes a second limiting mechanism and a second positioning mechanism disposed between the connecting member 32 and the second housing 20. The third position limiting mechanism includes a third position limiting portion provided on the second connecting portion 3212 and a fourth position limiting portion provided on the second housing 20, the third position limiting portion has the same structure as the first position limiting portion 19, and the third position limiting portion has the same structure as the first position limiting portion 110. The second connecting portion 3212 is provided with a fourth limiting portion, and the fourth limiting portion has the same structure as the second limiting portion 324 of the first connecting portion 3211. The second connecting portion 3212 is provided with a fourth positioning portion, which has the same structure as the second positioning portion 325 of the first connecting portion 3211.

In this embodiment, referring to fig. 32, the second position-limiting portion 324 is disposed on the first sliding plate 3213. The second position-limiting portion 324 is a strip-shaped position-limiting hole. The edge of the opening of the second limiting portion 324 is in the shape of an elliptical runway. The length direction of the second stopper 324 is substantially parallel to the length direction of the first sliding plate 3213. The position-limiting post 191 of the first position-limiting portion 19 (see fig. 13) passes through the second position-limiting portion 324, and the position-limiting post 191 slides in the second position-limiting portion 324. The width of the second position-limiting portion 324 is substantially the same as the diameter of the position-limiting post 191, and the second position-limiting portion 324 allows the position-limiting post 191 to slide only in the length direction of the first sliding plate 3213, so as to limit the movement of the position-limiting post 191 in the direction substantially perpendicular to the first sliding groove 141. As shown in fig. 22, when the position-limiting post 191 slides to one end of the second position-limiting portion 324, the first sliding plate 3213 stops sliding relative to the first sliding groove 141, so as to limit the first sliding plate 3213 to slide out of the first sliding groove 141, and two side edges of the connecting element 32 cannot be separated from the first housing 10 and the second housing 20, as shown in fig. 33, at this time, the first housing 10 can be opened and closed to a maximum included angle relative to the second housing 20, and the first housing 10 is turned over by more than 180 ° relative to the second housing 20, so that the mobile terminal 900 can serve as a notebook. Of course, in an embodiment, as shown in fig. 20 and 34, if the first position-limiting portion 19 is a position-limiting hole 1723 formed in the bottom plate 1711, the second position-limiting portion 324 may also be a convex pillar fixed on the first sliding plate 3213, and the second position-limiting portion 324 is slidably connected to the position-limiting hole 1723.

In this embodiment, please refer to fig. 31, the second positioning portion 325 is a positioning groove. The second positioning portions 325 are opened on the sliding side wall 3221. The second positioning portions 325 are arranged at intervals along the longitudinal direction of the first sliding plate 3213. As shown in fig. 32, when the first housing 10 (see fig. 1) and the second housing 20 (see fig. 2) are turned over by an external force, the first connection portion 3211 (see fig. 30) of the connection member 32 slides relative to the first housing 10 and the second housing 20. The first sliding plate 3213 slides relative to the first sliding groove 141 under an external force, and when the second positioning portion 325 slides to a position opposite to the detent 1101, one end of the detent 1101 is pressed against the second positioning portion 325 under an elastic force, the detent 1101 applies a pressing force to the first sliding plate 3213, and the first sliding plate 3213 is obstructed by the detent 1101 in the sliding direction, and stops sliding relative to the first sliding groove 141. At this time, the acting force on the first housing 10 and the second housing 20 is removed, the first sliding plate 3213 stays at the predetermined position of the first sliding groove 141, the connecting member 32 is maintained in the bent state, and the first housing 10 and the second housing 20 are maintained in the predetermined angle state.

In one embodiment, as shown in fig. 35 and 36, the anchor block 1712 includes a guide side 1713 that is substantially perpendicular to the base 1711. The first positioning portion 110 includes a positioning hole 1104 disposed on the fixing block 1712, and the positioning hole 1104 is located on the guiding side surface 1713. The second positioning portion 325 includes a plurality of resilient pieces 3222 fixed to the sliding side wall 3221. A plurality of the resilient pieces 3222 are arranged at intervals on the sliding side wall 3221. Each elastic piece 3222 includes a fixed end 3223 fixed to the sliding sidewall 3221, an abutting end 3224 far away from the sliding sidewall 3221, and an elastic arm 3225 connected between the fixed end 3223 and the abutting end 3224. The resilient arms 3225 provide a resilient return force of the contact ends 3224 away from the sliding side walls 3221. When the contact end 3224 is accommodated in the positioning hole 1104 under the elastic action of the elastic arm 3225, since the opening direction of the positioning hole 1104 is substantially perpendicular to the first sliding groove 141, the positioning hole 1104 restricts the contact end 3224 from continuing to slide along the first sliding groove 141, i.e., restricts the first sliding plate 3213 from sliding, so as to achieve positioning; when the contact end 3224 compresses the elastic arm 3225, the contact end 3224 is separated from the positioning hole 1104, and the resilient piece 3222 can slide along with the first sliding plate 3213.

With continued reference to fig. 30 and 37, the connector 32 includes a connecting link 326 (shown in phantom in fig. 30). The connecting chain 326 includes a first link 327 and a second link 328 that rotate relative to each other, and a first rotating shaft 329 rotatably connected between the first link 327 and the second link 328. The two first connecting portions 3211 are respectively disposed on two sides of the connecting link 326. The first connection portions 3211 are substantially parallel to the first rotation axis 329, and the two first connection portions 3211 are spaced apart from the first rotation axis 329. When the connecting member 32 is not offset with respect to the flexible board member 31, the first rotation axis 329 is equally distant from the first casing 10 and the second casing 20. The rotation shaft 320 is approximately opposite to the geometric median line of the flexible plate member 31 (see fig. 29). By turning the first chain link 327 relative to the second chain link 328, the connecting chain 326 is bent or unfolded, and the connecting chain 326 can support the flexible plate 31. In one embodiment, the connecting chain 326 includes a plurality of first chain links 327 and a plurality of second chain links 328, and the plurality of first chain links 327 and the plurality of second chain links 328 are staggered along the rotating shaft 320, such that the plurality of first chain links 327 and the plurality of second chain links 328 are in a bent plate shape.

In one embodiment, as shown in fig. 38, the connecting chain 326 may be provided with only one first link 327 and one second link 328, the first link 327 is provided with a groove 3275, the second link 328 is provided with a protrusion 3285 embedded in the groove 3275, and the first link 327 and the second link 328 are jointly rotatably connected to the first rotating shaft 329 and rotate mutually through the groove 3275 and the protrusion 3285 by the first rotating shaft 329.

With continued reference to fig. 37, the first link 327 includes a first inner connector portion 3271, a first outer connector portion 3272 disposed opposite to the first inner connector portion 3271, and two first sidewalls 3273 disposed opposite to each other between the first inner connector portion 3271 and the first outer connector portion 3272. One of the first side walls 3273 is provided with a rotation shaft hole at the first inner connecting portion 3271 toward the other first side wall 3273, the first rotation shaft 329 passes through the rotation shaft hole, and the first inner connecting portion 3271 of the first chain link 327 is rotatably connected to the first rotation shaft 329. In order to avoid interference with other components when the first link 327 rotates relative to the first rotation shaft 329, each of the first internal connection portion 3271 and the first external connection portion 3272 is provided with a semi-circular arc-shaped curved surface, a substantially geometric central axis of the first rotation shaft 329 coincides with a substantially geometric central axis of the semi-circular arc-shaped curved surface, and the first internal connection portion 3271 of the first link 327 reduces interference with other components. The first chain 327 is a metal member, and the surface of the chain 327 may be anodized to increase the appearance of the connecting chain 326. Of course, in other embodiments, the first link 327 may also be a bent plate to support the flexible plate 31 when the flexible plate 31 is bent.

In this embodiment, the second link 328 includes a second inner contact portion 3281, a second outer contact portion 3282 disposed opposite to the second inner contact portion 3281, and two second sidewalls 3283 disposed between the second inner contact portion 3281 and the second outer contact portion 3282. One of the second side walls 3283 is provided with a rotation shaft hole at the second inner portion 3281 toward the other second side wall 3283, the first rotation shaft 329 passes through the rotation shaft hole, and the second inner portion 3281 of the second link 328 is rotatably connected to the first rotation shaft 329. The second sidewall 3283 is substantially parallel to the first sidewall 3273. And a gap exists between the second side wall 3283 and the first side wall 3273 to ensure that the first chain link 327 rotates smoothly relative to the second chain link 328. In order to prevent interference with other components when the second link 328 rotates about the first rotation shaft 329, the second inner connecting portion 3281 and the second outer connecting portion 3282 are formed in a semi-circular arc shape. The substantially central axis of the first shaft 329 coincides with the substantially geometric central axis of the semi-arc curved surface, and the second inner contact portion 3281 of the second link 328 reduces interference with other components. The second link 328 may also be a metal piece. The outer surface of the second link 328 may be anodized the same as the first link 327 to maintain the same appearance of the second link 328 as the first link 327.

Since the first link 327 can be turned to any angle relative to the second link 328, after the first link 327 is bent relative to the second link 328 under an external force, the flexible plate 31 (see fig. 29) is bent, and the flexible plate 31 can respectively generate an elastic restoring force on the first link 327 and the second link 328 through the first shell 10 (see fig. 1) and the second shell 20 (see fig. 1), and if the external force is removed, the first link 327 and the second link 328 are easily unfolded by the elastic restoring force of the flexible plate 31. In order to maintain the first chain link 327 and the second chain link 328 in a relatively fixed state after they are at any included angle and to maintain the first shell 10 in a relatively fixed state after it is turned over at any included angle relative to the second shell 20, the connecting member 32 (see fig. 30) further includes a damping mechanism 33. The damping mechanism 33 is configured to generate a bending damping force on the connecting link 326, so that the bending or unfolding shape is maintained after the external force is removed from the connecting link 326.

Referring to fig. 37, 38 and 39, in the present embodiment, the damping mechanism 33 includes a first damping element 331, and the first damping element 331 includes a first damping ring 3311 and a second damping ring 3312. The first damping ring 3311 is sleeved on the first rotation shaft 329 and rotates with the first chain 327. The second damping ring 3312 is sleeved on the first rotation shaft 329 and rotates along with the second link 328, and the first damping ring 3311 and the second damping ring 3312 are abutted against each other to generate a frictional damping force. In one embodiment, damping mechanism 33 includes a plurality of sets of first damping members 331, each set of first damping members 331 positioned between first link 327 and second link 328. The first damping ring 3311 is made of wear resistant sheet. The second damping ring 3312 is made of wear resistant plate. The first damping ring 3311 has a rough surface, and the second damping ring 3312 also has a rough surface. When the first damping ring 3311 and the second damping ring 3312 are abutted against each other to rotate, the first damping ring 3311 and the second damping ring 3312 generate frictional resistance against each other. And the frictional resistance is transmitted to the first and

second links

327 and 328 since the first and second dampening

rings

3311 and 3312 are fixed to the first and

second sidewalls

3273 and 3283 of the first and

second links

327 and 328, respectively. The first link 327 and the second link 328 have a friction resistance against each other to prevent mutual rotation, and when an external force is smaller than the friction resistance, the first link 327 is fixed relative to the second link 328, so that the flexible plate 31 maintains a shape, and the first housing 10 is fixed relative to the second housing 20. When the external force is greater than the frictional resistance, the first link 327 rotates relative to the second link 328, the flexible plate 31 bends and deforms, and the first housing 10 is flipped relative to the second housing 20. Of course, in one embodiment, as shown in fig. 40, the damping mechanism 33 may further include a plurality of first barbs 336 disposed on the first side wall 3273 and around the first rotation shaft 329, and a plurality of second barbs 337 disposed on the second side wall 3283 and around the first rotation shaft 329, wherein the first barbs 336 interfere with the second barbs 337 to generate a frictional resistance to the first chain element 327 and the second chain element 328.

In this embodiment, with continued reference to fig. 37, 38 and 39, the first damping element 331 further includes a first elastic ring 3313, a second elastic ring 3314, a first snap ring 3315 and a second snap ring 3316. The first elastic ring 3313 is sleeved on the first rotation shaft 329 and fixed between the first sidewall 3273 and the damping ring 3311. The second elastic ring 3314 is sleeved on the first rotation shaft 329 and fixed between the second sidewall 3283 and the first damping ring 3311. The first elastic ring 3313 provides an elastic force to the first damping ring 3311, and the second elastic ring 3314 provides an elastic force to the second damping ring 3312, so that the first damping ring 3311 and the second damping ring 3312 interfere with each other. The first ring 3315 is fixed to the periphery of the first rotation shaft 329, and the first elastic ring 3313 is elastically compressed between the first damping ring 3311 and the first ring 3315. The first snap ring 3315 limits the position of the first elastic ring 3313, and prevents the position of the first elastic ring 3313 on the first rotation axis 329 from being deviated. The second ring 3316 is fixed to the periphery of the first rotation shaft 329, and the second elastic ring 3314 is elastically compressed between the second damping ring 3312 and the second ring 3316. The second snap ring 3316 limits the position of the second elastic ring 3314, and prevents the second elastic ring 3314 from deviating from the first rotation axis 329. In one embodiment, the first rotating shaft 329 is formed of a plurality of stub shafts, each of which passes through the first and

second links

327 and 328, respectively. The first and second clamp rings 3315 and 3316 are respectively clamped to two ends of the short shaft 3291, so as to facilitate assembling the first damping member 331 to the first and second chain links 327 and 328. The first side wall 3273 is provided with a first locking groove 3274, and the second side wall 3283 is provided with a second locking groove 3284. The first clamping groove 3274 is a special-shaped groove, the second clamping groove 3284 is a special-shaped groove, and the first damping ring 3311 and the second damping ring 3312 are respectively clamped in the first clamping groove 3274 and the second clamping groove 3284, so as to prevent the first damping ring 3311 from rotating relative to the first clamping groove 3274 and prevent the second damping ring 3312 from rotating relative to the second clamping groove 3284. The first elastic ring 3313 and the second elastic ring 3314 are fixed to the first locking groove 3274 and the second locking groove 3284, respectively, so as to reduce a gap between the first chain link 327 and the second chain link 328, and improve a supporting performance of the connecting chain 326. The first and second clamping rings 3315 and 3316 are respectively located at the bottom of the first and

second clamping grooves

3274 and 3284, but are respectively spaced from the bottom surface of the first clamping groove 3274 and the bottom surface of the second clamping groove 3284 to protect the first and

second links

327 and 328, prevent the first elastic ring 3313 from damaging the first link 327 and prevent the second elastic ring 3314 from damaging the second link 328. Of course, in other embodiments, the first elastic ring 3313 may be replaced by other elastic members such as a spring, and the second elastic ring 3314 may be replaced by other elastic members such as a spring.

Referring to fig. 41, in the present embodiment, the connecting chain 326 further includes a third link 333, a fourth link 334, a second rotating shaft 335, and a third rotating shaft 336. The third link 333 is a metal member, and the third link 333 may have the same anodized outer surface as the first link 327. The fourth link 334 is a metal piece, and the fourth link 334 may have the same anodized outer surface as the first link 327. The third link 333 is rotatably connected to the first outer joint part 3271 of the first link 327 by a second rotating shaft 335. The fourth link 334 is rotatably connected to the second outer portion 3283 of the second link 328 by a third rotating shaft 336.

In one embodiment, the direction of rotation of the third link 333 is substantially parallel to the direction of rotation of the first link 327. I.e., the second axis of rotation 335 is substantially parallel to the first axis of rotation 329. The third link 333 includes a third inner connecting portion 3331 and a third outer connecting portion 3332 disposed opposite to the third inner connecting portion 3331, and two third sidewalls 3333 disposed opposite to each other between the third inner connecting portion 3331 and the third outer connecting portion 3332. One of the third side walls 3333 is provided with a rotation shaft hole at the third inner connecting portion 3331 toward the other third side wall 3333, the second rotation shaft 335 passes through the rotation shaft hole, and the third inner connecting portion 3331 of the third link 333 is rotatably connected to the second rotation shaft 335. The second rotating shaft 335 further passes through a rotating shaft hole of the first chain link 327 at the first external connection portion 3272, and the third chain link 333 is turned over with respect to the first chain link 327. The plurality of third links 333 and the plurality of first links 327 are staggered with respect to each other on the second shaft 335. One of the third side walls 3333 of the third links 333 extends toward the adjacent third side wall 3333 of another third link 333 with a projection 3334, wherein the projection 3334 has a height substantially equal to the distance between the two first side walls 3273 of the first link 327. The boss 3334 makes up a gap between the third sidewalls 3333 of two adjacent third links 333, reduces a distance between the two adjacent third links 333, and further increases a bonding area of the connecting chain 326 to the flexible display screen 40, so that the connecting chain 326 supports the flexible display screen 40 more stably. The third circumscribing portions 3332 of the plurality of third links 333 constitute first connecting portions 3211 (see fig. 30) of the connecting member 32. The third link 333 at the end of the second shaft 335 is fixed to the first sliding plate 3213 at the third circumscribing portion 3332. The first sliding plate 3213 is integrally provided with the third link 333 at the end of the second rotating shaft 335. The third external connecting portion 3332 has a flat side surface, and the first sliding plate 3213 is substantially perpendicular to the flat side surface of the third external connecting portion 3332. The other third link 333 of the second shaft 335 is fixed to the second sliding plate 3214 at the third external connecting portion 3332. The third links 333 are slidably connected to the first housing 10 to enable the connecting member 32 to be slidably connected to the first housing 10 near the first connecting portion 3211 of the first housing 10 (see fig. 1). In one embodiment, the third sidewall 3333 is substantially parallel to the first sidewall 3273, and a gap is formed between the third sidewall 3333 and the first sidewall 3273 to ensure smooth rotation of the first link 327 with respect to the third link 333. In order to avoid interference with other components when the third link 333 rotates relative to the second rotation shaft 335, the third internal connecting portion 3331 and the third external connecting portion 3332 are each provided with a semi-circular arc-shaped curved surface, a substantially geometric central axis of the second rotation shaft 335 coincides with a substantially geometric central axis of the semi-circular arc-shaped curved surface, and the second internal connecting portion 3281 of the second link 328 reduces interference with other components. The boss 3334 is also provided with a semi-circular arc surface on a side facing the first link 327. In order to maintain the third chain link 333 and the first chain link 327 fixed after forming any included angle, and maintain the first casing 10 fixed relative to the second casing 20 after being turned over and formed any included angle, the damping mechanism 33 further includes a plurality of sets of first side damping assemblies 332. Each of the second damping assemblies 332 is disposed between the first link 327 and the third link 333 and is configured to generate a turning damping force on the third link 333 and the first link 327, such that a relatively fixed state can be maintained after external force is removed from the third link 333 and the first link 327.

As shown in fig. 39 and 41, the second damping member 332 is provided in the same manner as the first damping member 331. The first elastic ring 3313 of the second damping element 332 is sleeved on the second shaft 325 and fixed between the first link 327 and the first damping ring 3311 of the second damping element 332. The second elastic ring 3314 of the second damping member 332 is sleeved on the second rotation shaft 325 and fixed between the third link 333 and the second damping ring 3312 of the second damping member 332.

The fourth link 334 is configured in the same manner as the third link 333. When the fourth link 334 is assembled with the second link 328, the boss 3334 of the fourth link 334 faces opposite to the boss 3334 of the third link 333. The plurality of fourth links 334 and the plurality of second links 328 are staggered on the third rotating shaft 336. The second connecting portion 3212 (see fig. 29) is formed by the fourth links 334 on the side opposite to the third rotating shaft 336, so that the second connecting portion 3212 of the connecting member 32 is slidably connected to the second housing 20. The fourth link 334 and the second link 328 maintain relatively fixed after forming any included angle, and the first casing 10 maintains relatively fixed state after being turned over and forming any included angle with respect to the second casing 20, and the damping mechanism 33 further includes a third damping assembly 340. Third dampening assembly 340 is configured to generate a roll-over dampening force on fourth link 334 and second link 328 such that a relatively fixed state may be maintained after external forces are removed from fourth link 334 and second link 328. The fourth damping member 340 is provided in the same manner as the first damping member 331. The first elastic ring 3313 of the third damping element 340 is sleeved on the third shaft 326 and fixed between the second link 328 and the first damping ring 3311 of the third damping element 340. The second elastic ring 3314 of the third damping element 340 is sleeved on the third shaft 326 and fixed between the fourth link 334 and the second damping ring 3312 of the third damping element 340.

Referring to fig. 30 and 42, since two first connection portions 3211 of the connection member 32 are slidably connected to the first housing 10 (see fig. 1) and the second housing 20 (see fig. 1), respectively, it is necessary to prevent the two first connection portions 3211 from sliding in one direction relative to the first housing 10 or the second housing 20. I.e. to avoid that the connecting member 32 is displaced relative to the flexible board member 31 and the support of the flexible board member 31 is lost, the connected module 30 further comprises a limiting member 34. The restricting member includes a first end 342 and a second end 342 opposite to the first end 342, the first end 341 and the second end 342 are connected to the flexible plate member 31 and the connecting member 32, respectively, and the restricting member 34 restricts the displacement of the connecting member 32 toward the first housing 10 or the second housing 20 with respect to the flexible plate member 31. In one embodiment, the first end 341 is fixedly connected to the flexible plate 31, and the second end 342 limits the connecting member 32. The first end 341 is equidistant from the first housing 10 and the second housing 20, and the second end 342 limits the connecting element 32 to limit the deviation of the connecting element 32 toward the first housing 10 or the second housing 20.

Referring to fig. 43, 44 and 45, a first embodiment is provided, in which the first end 341 is provided with a protruding pillar 343 facing away from the second end 342, and the second end 342 is provided with a rotating shaft hole 344 along a direction substantially perpendicular to the length direction of the limiting member 34. The flexible plate 31 has a welding hole 315 opposite to the first link 327 at a position substantially parallel to a geometric median line of the first fixed edge 311, the protruding pillar 343 is welded in the welding hole 315, and the first end 341 is located at a distance equal to that of the first casing 10 (see fig. 1) and the second casing 20 (see fig. 1). As shown in fig. 42, the first link 327 opens at the first internal connection portion 3271 with a receiving groove 3274 that opens toward the flexible plate 31. The first rotating shaft 329 penetrates through the receiving groove 3274. The second end 342 of the limiting member 34 is received in the receiving groove 3274, the first rotating shaft 329 passes through the rotating shaft hole 344 of the second end 342, and the limiting member 34 is rotatable in the receiving groove 3274 relative to the first link 327. The second end 342 of the limiter 34 is fixed relative to the first pivot 329. That is, the geometric centerline of the connecting member 32 approximately parallel to the first connecting portion 3211 is fixed relative to the second end 342 of the limiting member 34, so that the connecting member 32 always faces the geometric centerline of the flexible board 31 approximately parallel to the first fixing edge 311 approximately parallel to the geometric centerline of the first connecting portion 3211, the connecting member 32 is limited from shifting relative to the flexible board 31, and the connecting module 30 is ensured to effectively support the bent portion of the flexible display 40. The flexible plate 31 has a plurality of welding holes 315 formed therein corresponding to the plurality of first links 327, and the flexible plate 31 also has a plurality of welding holes 315 formed therein corresponding to the plurality of second links 327. The second link 327 also has the receiving groove 327 d. The connecting module 30 includes a plurality of the limiting members 34, and the plurality of the limiting members 34 are respectively and correspondingly installed in the plurality of accommodating grooves 3274, so that the structures of the flexible plate 31 and the connecting member 32 are more stable.

Referring to fig. 46, a second embodiment is provided, in which the limiting member 34 is provided with a limiting groove 345 extending toward the first end 341 at the second end 342, and the limiting groove 345 is slidably connected to the connecting member 32 to limit the connecting member 32 from approaching or departing from the flexible plate member 31 within a predetermined distance.

The connecting module 30 includes two limiting members 34, and the two limiting members 34 are respectively fixed at two ends of the first rotating shaft 329 in the length direction. The limiting member 34 is a package member, and the limiting member 34 can also cover and package two ends of the connecting member 32. In one embodiment, the retaining member 34 is a flexible flexure. The first end 341 is fixedly connected to the connecting side 313 of the flexible board 31 by means of bonding or snap-fit connection, and is bent or unfolded along with the connecting side 313. The first end 341 extends toward the second end 342 to form a plurality of protrusions 346, the protrusions 346 are arranged along the length direction of the connecting side 313, and the protrusions 346 cover both ends of the connecting element 32 to improve the appearance and structure performance of the connecting module 30. Each of the protrusions 346 has two inclined sidewalls 347 inclined at an included angle. The inclined side walls 347 of two adjacent protrusions 346 are arranged at an included angle. When the restricting member 34 is unfolded with the flexible plate member 31, a gap exists between the inclined side walls 347 of adjacent two of the protrusions 346. When the limiting member 34 bends along with the flexible plate member 31, the inclined side walls 347 of two adjacent protrusions 346 approach each other, and finally the protrusions 346 are contracted together to cover the end of the connecting member 32. The limiting groove 345 is located on one of the protrusions 346, and the protrusion 346 is opposite to the approximate geometric median line of the flexible plate member 31 which is approximately parallel to the first fixing edge 311. The position-limiting groove 345 is opposite to the approximate geometric median of the flexible board 31 approximately parallel to the first fixing edge 311, and the length direction of the position-limiting groove 345 is approximately perpendicular to the flexible board 31 and approximately parallel to the geometric median of the first fixing edge 311. Both ends of the first rotating shaft 329 are inserted into the limiting grooves 345 of the two limiting members 34, respectively. The opening edge of the limiting groove 345 is in an elliptical runway shape. Both ends of the first rotating shaft 329 are slidably connected to the limiting groove 345 along the length direction of the limiting groove 345. The limiting groove 345 limits the first rotating shaft 329 from deviating from the center of the flexible plate member 31, so as to limit the connecting member 32 from deviating from the flexible plate member 31. Since the distance from the first rotating shaft 329 to the flexible plate member 31 increases when the first housing 10 abuts against the second housing 20 by more than 180 °, the end of the first rotating shaft 329 slides toward the other end at one end of the limiting groove 345. The limiting groove 345 guides the first rotating shaft 329, and prevents the first rotating shaft 329 from being deviated from the approximate geometric center of the flexible plate member 31 when being away from the flexible plate member 31, that is, the first housing 10 and the second housing 20 are turned over more than 180 °, and the connecting member 32 still does not deviate from the flexible plate member 31. When the first rotating shaft 329 slides from one end of the limiting groove 345 to the other end, the first rotating shaft 329 cannot slide continuously, and the flexible plate 31 cannot keep away from the first rotating shaft 329. The first casing 10 cannot increase the turning angle relative to the second casing 20, that is, the first casing 10 and the second casing 20 are ensured to turn over each other within the range of the safe included angle, so that the flexible display screen 40 is ensured to bend within the range of the safe included angle, and the flexible display screen 40 (see fig. 1) is prevented from bending. Since the limiting member 34 is made of a flexible silica gel material to facilitate bending of the limiting member 34, and the limiting member 34 is easily damaged by friction of the first rotating shaft 329, in order to increase the service life of the limiting member 34, the limiting member 34 is sleeved with an oval runway-shaped steel ring 348 in the limiting groove 345, so that the safety of the limiting member 34 is increased.

Referring to fig. 47, a third embodiment is provided, in which the limiting member 34 is a steel plate integrally formed with the flexible plate member 31. The first end 341 of the limiting member 34 is fixed at the approximate geometric center of the connecting side 313, and the first end 341 is equal to the distance between the first shell 10 and the second shell 20. The second end 342 is bent at 90 ° with respect to the flexible plate 31. The flexible plate 31 and the limiting member 34 are obtained by providing a sheet metal member in advance and performing press bending on both ends of the sheet metal member by using a press process. A sliding hole 348 is punched out of the second end 342 of the limiting member 34, and both ends of the first rotating shaft 329 respectively pass through the sliding holes 348 of the two limiting members 34. The opening edge of the sliding hole 348 is shaped like an oval track, and the length direction of the sliding hole 348 is approximately perpendicular to the approximate geometric median line of the flexible plate member 31, which is approximately parallel to the first fixed edge 311. One end of the first rotating shaft 329 is provided with a sliding rod 3291, the sliding rod 3291 slides in the sliding hole 348, so that the first rotating shaft 329 is positioned with the second end 342 of the limiting member 34, the first rotating shaft 329 is limited from deviating relative to the flexible plate member 31, and the connecting member 32 is approximately opposite to the flexible plate member 31, so as to ensure that the structure of the support module 30 is stable. The first rotation shaft 329 slides in a direction substantially opposite to the flexible plate member 31 so that the flexible plate member 31 can be bent over 180 degrees, that is, so that the first housing 10 can be turned over in a clip angle of over 180 degrees with respect to the second housing 20.

Referring to fig. 48, 49 and 50, in the third embodiment, the housing assembly 100 (see fig. 1) further includes a flexible package 50, and the flexible package 50 is configured to be fixed to a side of the flexible display 40. The flexible package 50 has a package face 51, and the package face 51 covers the side of the flexible display screen 40. The package surface 51 is an outer side surface of the package 50. The package 50 also has an attachment surface 52 disposed opposite the package surface 51. The abutting surface 52 abuts against the limiting member 34, and a sliding groove 512 is formed corresponding to the fixing hole 348. The sliding rod 3291 of the first rotating shaft 329 passes through the fixing hole 348 and slides in the sliding groove 512. The package face 51 has a first edge 53 substantially parallel to the side of the flexible display 40, a second edge 54 opposite to the first edge 53, and a plurality of through holes 55 spaced apart from each other in a direction parallel to the first edge 53. The first edge 53 and the second edge 54 are bent or unfolded along with the side of the flexible display 40, and the inner spaces of the plurality of through holes 55 are compressed by the bending of the first edge 53 and the second edge 54, so that the flexible package 50 is contracted along with the bending of the side of the flexible display 40.

In one embodiment, as shown in fig. 52, the second end 342 is fixedly connected to the connecting member 32, and the first end limits the flexible plate member 31 to prevent the connecting member 32 from being shifted toward the first housing 10 or the second housing 20 relative to the flexible plate member 31. The connecting side 313 of the flexible plate 31 is provided with a sliding column 349 at approximately the geometric center. The second end 342 is fixedly connected to the end of the first rotating shaft 329 of the connecting member 32. The first end 341 is provided with a sliding hole 348, and the sliding hole 348 is slidably connected to the sliding post 349. The length direction of the sliding hole 348 is substantially perpendicular to the geometric centerline of the flexible board member 31, which is substantially parallel to the first fixing edge 311.

The housing assembly 100 (see fig. 1) includes two flexible enclosures 50, and the two flexible enclosures 50 are respectively fixed to two connecting sides 313 of the flexible board 31. The flexible package 50 covers the connection mold assembly of the flexible display screen 40. The flexible package 50 also covers the connection module 30, and improves the appearance of the housing assembly 100. In one embodiment, the flexible package 50 is made of silicone. The flexible package member 50 and the flexible board member 31 are integrally molded in a mold, and the first edge 53 of the flexible package member 50 is fixedly connected to the connecting side edge 313. The first edge 53 of the flexible enclosure 50 is bent or unfolded with the connecting side 313 of the flexible sheet member 31. The opening edge of each through hole 55 is in an oval track shape, and the length direction of each through hole 55 is approximately parallel to the connecting side 313. There is sufficient space within the through hole 55 for compression when the flexible package 50 is bent. Of course, in other embodiments, the opening edge of the through hole 55 may also be circular or rectangular. The first edge 53 may also be locked to the flexible plate 31 by means of screws.

Referring to fig. 53, in the present embodiment, the flexible display screen 40 includes a first display portion 41 attached to the first supporting surface 111 (see fig. 3), a second display portion 42 attached to the second supporting surface 121, and a bending display portion 43 connected to the first display portion 41 and the second display portion 42. The first display portion 41 and the second display portion 42 are folded or unfolded with the first casing 10 and the second casing 20, respectively. The first display portion 41 includes a first display surface facing the user and a first back surface 121 facing away from the user (see fig. 25), and the second display portion 42 includes a second display surface facing the user and a second back surface 221 facing away from the user (see fig. 25). The bending display portion 43 bends or unfolds as the first display portion 41 is folded or unfolded relative to the second display portion 42. As shown in fig. 52, the flexible display 40 may be unfolded as the first casing 10 and the second casing 20 are opened. As shown in fig. 54, the flexible display 40 may be bent along with the first housing 10 and the second housing 20 forming an included angle, that is, the first display surface of the first display portion 10 is turned over more than 180 ° relative to the second display surface of the second display portion 20, in fig. 53, the first display surface of the first display portion 41 is turned over 270 ° relative to the second display surface of the second display portion 20, and the first back surface 121 of the first display portion 41 is close to the second back surface 221 of the second display portion 42. As shown in fig. 55, the flexible display 40 (see fig. 51) may be folded along with the first casing 10 and the second casing 20 being stacked, and the first back surface 121 of the first display portion 41 and the second back surface 221 of the second display portion 42 are close to each other to form a close state. As shown in fig. 55, the flexible display 40 (see fig. 51) can be opened when the first casing 10 and the second casing 20 are turned over.

In one embodiment, referring to fig. 57, the number of the second display portions 42 is two, the two second display portions 42 are respectively located at two sides of the first display portion 41, the number of the second housings 20 is two, the two second housings 20 are respectively located at two sides of the first housing 10, and the two second housings 20 respectively support the two second display portions 42. The bending display part 43 is connected between each second display part 42 and the first display part 41. The connecting module 30 is connected between each second casing 20 and the first casing 10. Each connecting module 30 supports the bending display part 43.

Referring to fig. 58, the display assembly 200 (see fig. 1) further includes a flexible light-transmissive cover 60 covering the flexible display screen 40. The flexible light-transmitting cover plate 41 is attached to the flexible display screen 40. The periphery of the light-transmitting cover plate 60 is fixedly connected to the first casing 10, the second casing 20 and the flexible plate 31. The light-transmitting cover plate 41 protects the flexible display screen 40 and improves the appearance performance of the mobile terminal 900.

Referring to fig. 59, in the present embodiment, the electronic assembly 300 (see fig. 1) includes a first electronic module 71, a second electronic module 72, and a flexible circuit board 73 electrically connecting the first electronic module 71 and the second electronic module 72. The first electronic module 71 and the second electronic module 72 are fixed to the first receiving cavity 13 and the second receiving cavity 23, respectively. The first electronic module 71 may be composed of a printed circuit board and a functional module disposed on the printed circuit board. The first electronic module 71 may be a motherboard, a central processing unit for setting the motherboard, a memory, an antenna, a camera, a handset, etc. The second electronic module 72 may also be composed of a printed circuit board and a functional module disposed on the printed circuit board, the second electronic module 72 is different from the first electronic module 71, and the second electronic module 72 may be a battery, a connector, a fingerprint module, or the like.

The foregoing is a preferred embodiment of the invention, and it should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the invention, and these improvements and modifications are also considered as the protection scope of the invention.

Claims

1. A shell assembly is characterized by comprising a first shell, a second shell and a connecting piece connected between the first shell and the second shell, wherein the first shell and the second shell are mutually overturned through the connecting piece, a first positioning mechanism is arranged between the connecting piece and the first shell, the first positioning mechanism positions the first shell relative to the connecting piece, a second positioning mechanism is arranged between the connecting piece and the second shell, and the second positioning mechanism positions the second shell relative to the connecting piece so as to enable the first shell and the second shell to be overturned and positioned; the connecting piece comprises a connecting chain and a connecting piece, wherein the connecting chain comprises a plurality of first chain links and a plurality of second chain links which rotate mutually, and a first rotating shaft which is connected between the plurality of first chain links and the plurality of second chain links in a rotating way, and the plurality of first chain links and the plurality of second chain links are staggered with each other along the rotating shaft, so that the plurality of first chain links and the plurality of second chain links are in a bent plate shape; the connecting piece comprises a first connecting portion and a second connecting portion, the first connecting portion and the second connecting portion are respectively connected with the first shell and the second shell, the first connecting portion is connected with the first chain links in a plurality of modes, and the second connecting portion is connected with the second chain links in a plurality of modes.

2. The housing assembly of claim 1, wherein the first positioning mechanism comprises a first positioning portion disposed on the first housing and a second positioning portion disposed on the connecting member, the second positioning portion cooperating with the first positioning portion to position the first housing and the connecting member.

3. The housing assembly of claim 2, wherein the first housing includes a sliding bracket having a sliding slot, the connecting member has a sliding plate slidably connected to the sliding slot of the sliding bracket, the first positioning portion is disposed on the sliding bracket, and the second positioning portion is disposed on the sliding plate.

4. The housing assembly of claim 3, wherein the first detent comprises a detent slidably coupled to the sliding bracket and the second detent comprises a groove disposed on the sliding plate, the detent cooperating with the groove to secure the connector relative to the first housing.

5. The housing assembly of claim 4, wherein the first positioning portion further comprises a resilient member resiliently compressed between the sliding bracket and the detent to provide a resilient force for the detent to abut against the plurality of grooves, the plurality of grooves being aligned along the sliding direction of the sliding plate.

6. The housing assembly of claim 3 wherein said sliding support further comprises a guide slide secured within said slide channel, said guide slide guiding said slide plate to slide.

7. The shell assembly according to any one of claims 1 to 6, further comprising a first limiting mechanism, wherein the first limiting mechanism comprises a first limiting portion disposed on the first shell and a second limiting portion disposed on the connecting member, and the second limiting portion is matched with the first limiting portion to limit a moving distance of the connecting member relative to the first shell.

8. The housing assembly of claim 7, wherein the first position-limiting portion comprises a position-limiting post disposed on the first housing, the second position-limiting portion comprises a position-limiting groove disposed on the connecting member, the position-limiting post is slidably connected in the position-limiting groove, and a sliding direction of the position-limiting post is parallel to a sliding direction of the first connecting portion.

9. The casing assembly according to any one of claims 1 to 6, wherein the second positioning mechanism comprises a third positioning portion provided on the second casing and a fourth positioning portion provided on the connecting member, and the third positioning portion and the fourth positioning portion cooperate with each other to position the connecting member and the second casing.

10. The shell assembly according to any one of claims 1 to 6, further comprising a second limiting mechanism, wherein the second limiting mechanism comprises a third limiting portion disposed on the second shell and a fourth limiting portion disposed on the connecting member, and the fourth limiting portion is matched with the third limiting portion to limit a moving distance of the second shell relative to the connecting member.

11. The housing assembly of any one of claims 1 to 6 further comprising a flexible sheet member fixedly connecting the first housing and the second housing, the flexible sheet member bending as the second housing and the first housing are brought together.

12. The housing assembly of any one of claims 1 to 6, wherein the first positioning mechanism positions the first connecting portion and the first housing, and the second positioning mechanism positions the second connecting portion and the second housing.

13. The housing assembly of claim 12, wherein the first housing is provided with a first receiving portion that receives the first connecting portion.

14. The housing assembly of claim 12, wherein the second housing is provided with a second receiving portion that receives the second connecting portion.

15. The housing assembly of claim 12, wherein the two ends of the connecting chain are fixedly connected to the first connecting portion and the second connecting portion, respectively, and the connecting chain is composed of at least two chain links which are rotatably connected end to end.

16. The housing assembly of claim 15 wherein said connector further comprises a dampening mechanism mounted between adjacent two of said links for generating a rotational dampening force on adjacent two links.

17. The housing assembly of claim 16 wherein said dampening mechanism includes at least one set of dampening members, each set of dampening members including two dampening rings, the two dampening rings being mounted about the rotational axis of two adjacent links, the two dampening rings being secured to two adjacent links and interfering with each other to apply frictional resistance to each other as the two adjacent links rotate.

18. The housing assembly of claim 17 wherein each set of said dampening assemblies further comprises two resilient rings, each said resilient ring compressed between said dampening ring and a link for providing a restoring force of said dampening ring away from said link.

19. A display device, comprising the housing assembly of any one of claims 1 to 18, and further comprising a flexible display screen fixedly connecting the first housing and the second housing.

20. A mobile terminal, characterized in that the mobile terminal comprises the display device of claim 19, and further comprises an electronic component, which is accommodated in the housing component and electrically connected to the flexible display screen.