CN117597716A

CN117597716A - Telescopic screen structure and electronic equipment

Info

Publication number: CN117597716A
Application number: CN202280001763.0A
Authority: CN
Inventors: 刘振华
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2022-05-26
Filing date: 2022-05-26
Publication date: 2024-02-23
Also published as: WO2023225972A1

Abstract

A kind of flexible screen structure and electronic equipment, the flexible screen structure includes: a flexible display screen (90) provided with a first magnetic assembly (40); the support assembly (60) is supported below the flexible display screen and comprises a first support plate (61) and a second support plate (62), and the second support plate is connected with the flexible display screen and is in sliding connection with the first support plate. At least one of the first support plate and the second support plate is provided with a second magnetic assembly (50) magnetically engaged with the first magnetic assembly. When the telescopic screen structure is switched between the unfolding state and the retracting state, the second supporting plate slides relative to the first supporting plate along the direction far away from or close to the first supporting plate, the flexible display screen and the second supporting plate synchronously move, and the second supporting plate is used for supporting the unfolded part of the flexible display screen relative to the first supporting plate. In the motion process of the flexible display screen, the flexible display screen can be flatly attached to the supporting component through the magnetic attraction matching of the first magnetic component and the second magnetic component, so that the problem of arching or virtual position is reduced.

Description

Telescopic screen structure and electronic equipment

Technical Field

The disclosure relates to the technical field of retractable screen products, in particular to a retractable screen structure and electronic equipment.

Background

With the continuous progress of screen technology, flexible display screens with the thickness of 0.01mm are produced in large quantities, terminal product forms are more and more abundant, the flexible display screens are worn from intelligence to intelligent houses and then to intelligent mobile phone terminals, and the ultrathin flexible screen can enable future product designs to be multi-directional, and the flexible display screens are used for folding mobile phones, annular mobile phones, different-curved-surface terminal products and the like. Meanwhile, the arrival of 5G allows all intelligent products to be electrically connected, the acceleration of data transmission, and some modules of the intelligent terminal products can be separated from the intelligent terminal products, and functions such as a photographing module, a BOX acoustic module and the like can be realized. The battery technology is further developed, so that the volume of a terminal product is smaller, the battery capacity is higher, and the design form of the terminal product is more flexible.

Along with the promotion of people to flexible screen product requirement, when handling different job tasks like watching video, making a call, need through increase or reduce display area in order to promote the product experience degree, mainly include two kinds of screen expansion structures at present: folding screen structure and flexible screen structure.

Disclosure of Invention

The present disclosure provides a retractable screen structure and an electronic device, so as to solve at least some of the problems in the related art.

In a first aspect, an embodiment of the present disclosure provides a retractable screen structure, including:

the flexible display screen is provided with a first magnetic component;

the support assembly is supported below the flexible display screen and comprises a first support plate and a second support plate, and the second support plate is connected with the flexible display screen and is in sliding connection with the first support plate; at least one of the first support plate and the second support plate is provided with a second magnetic component which is in magnetic attraction fit with the first magnetic component;

the flexible display screen structure comprises an unfolding state and a retraction state, when the flexible display screen structure is switched between the unfolding state and the retraction state, the second support plate slides relative to the first support plate along a direction away from or close to the first support plate, the flexible display screen and the second support plate synchronously move, and the second support plate is used for supporting the unfolded part of the flexible display screen relative to the first support plate.

In some alternative embodiments, the first magnetic assembly comprises:

the first metal piece is connected to one side of the flexible display screen, which is close to the supporting component;

And the second metal piece is connected with the first metal piece.

In some alternative embodiments, the flexible display screen includes a body portion and a bend portion connected to the body portion; the first metal piece is not magnetic and is connected to one side of the body part and one side of the bending part, which is close to the supporting component; the second metal piece is magnetic and is connected to the part of the first metal piece located in the area where the bending part is located.

In some alternative embodiments, the first metal piece comprises a mesh sheet metal; and/or

The second metal piece comprises a strip-shaped metal sheet.

In some alternative embodiments, the first support plate includes a first body portion and a plurality of first guide portions disposed at side portions of the first body portion, the first guide portions extending in a first direction, the plurality of first guide portions being disposed at intervals in a second direction perpendicular to the first direction;

the second support plate comprises a second main body part and a plurality of second guide parts which are in sliding fit with the first guide parts, the second guide parts are arranged on the side parts of the second main body part, the second guide parts extend along the first direction, and the second guide parts are arranged at intervals along the second direction.

In some alternative embodiments, the second magnetic assembly includes at least one magnetic attraction member, at least one of the second body portion and the second guide portion being provided with a groove portion, the magnetic attraction member being provided within the groove portion.

In some alternative embodiments, the second body portion is provided with a first groove portion, the first groove portion extending in the first direction; and/or

The second guiding part is provided with a second groove part, and the second groove part extends along the second direction.

In some alternative embodiments, the magnetic attraction member is a plurality of magnetic attraction members;

the second main body part is provided with at least two first groove parts which are arranged at intervals along the second direction; or (b)

At least one second guiding part is provided with at least two second groove parts which are arranged at intervals along the first direction; or (b)

The second main body part is provided with at least two first groove parts which are arranged at intervals along the second direction, and the at least one second guiding part is provided with at least two second groove parts which are arranged at intervals along the first direction.

In some alternative embodiments, the first guide portion includes one of a guide groove and a guide rail that are mutually adapted, and the second guide portion includes the other of a guide groove and a guide rail that are mutually adapted.

In a second aspect, an embodiment of the disclosure provides an electronic device, including the retractable screen structure of the first aspect.

In some alternative embodiments, the electronic device includes:

the shell comprises a first shell and a second shell, and the first shell and the second shell are enclosed to form a containing structure with an opening;

the sliding rail mechanism is arranged in the accommodating structure and connected with the second shell, and the sliding rail mechanism is connected with the first shell in a sliding manner along a first direction;

the rotating shaft assembly is arranged at one end, far away from the first shell, of the second shell and comprises a track part; the thickness of the track part along a third direction perpendicular to the first direction gradually decreases from one end close to the first shell to one end far away from the first shell along the first direction;

the flexible display screen is wound on the track portion, a first end of the flexible display screen is connected with the sliding rail mechanism, and a second end of the flexible display screen is connected with the first shell and covers the opening.

In some optional embodiments, the track portion includes a track surface, the flexible display screen is wound around the track surface, and an end surface of the track surface away from the first housing is an arc surface.

In some optional embodiments, the track portion includes a track body and a runner, the track body forming a receiving cavity, the runner being movably disposed within the receiving cavity;

the flexible display screen is wound on the track body and part of the rotating wheel, and the outer contour surface of the track body and part of the outer contour surface of the rotating wheel jointly form the track surface.

In some alternative embodiments, the track is elliptical in shape.

The flexible display screen is supported through the supporting component to the flexible display screen structure, and when the flexible display screen structure is switched between the unfolding state and the retracting state, the flexible display screen is supported through the second supporting plate to be unfolded relative to the first supporting plate, so that the flexible display screen is comprehensively supported, and the flexible display screen is ensured not to sink when being used in the unfolding state. And in the motion process of the flexible display screen, the flexible display screen can be flatly attached to the supporting component through the magnetic attraction matching of the first magnetic component and the second magnetic component, so that the problem of arching or virtual position is reduced.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.

FIG. 1 is a schematic diagram illustrating a retracted state of an electronic device according to an exemplary embodiment of the present disclosure;

FIG. 2 is a schematic diagram illustrating an expanded state of an electronic device according to an exemplary embodiment of the present disclosure;

FIG. 3 is an enlarged partial schematic view at A in FIG. 2;

FIG. 4 is a schematic view of a structure of a retractable screen according to an exemplary embodiment of the present disclosure;

FIG. 5 is an enlarged partial schematic view of a telescoping screen structure according to an exemplary embodiment of the present disclosure;

FIGS. 6 and 7 are schematic structural views illustrating an expanded state of a support assembly according to an exemplary embodiment of the present disclosure, respectively;

FIG. 8A is a cross-sectional view taken along the A-A plane in FIG. 7;

FIG. 8B is an enlarged schematic view at A in FIG. 8A;

FIG. 9 is an exploded view of a telescoping screen structure according to an exemplary embodiment of the present disclosure;

FIG. 10 is an exploded schematic view of a slide rail assembly of a slide rail mechanism according to an exemplary embodiment of the present disclosure;

FIG. 11 is a schematic view of a slide rail mechanism according to an exemplary embodiment of the present disclosure;

FIG. 12 is a schematic view of a slide rail assembly of a slide rail mechanism according to an exemplary embodiment of the present disclosure;

FIG. 13 is a cross-sectional view taken along the direction X1-X1 of FIG. 12;

FIG. 14 is an enlarged partial schematic view at A in FIG. 13;

FIG. 15 is an enlarged partial schematic view at B in FIG. 13;

FIG. 16 is an enlarged partial schematic view at C in FIG. 13;

FIG. 17 is a schematic view of the structure of the elastic assembly of the slide rail mechanism according to an exemplary embodiment of the present disclosure;

FIG. 18 is a schematic view of a structure of a retractable screen according to an exemplary embodiment of the present disclosure;

FIG. 19 is a schematic view of a hinge assembly of a telescoping screen structure according to an exemplary embodiment of the present disclosure;

FIG. 20 is an enlarged schematic view at A in FIG. 19;

FIG. 21 is a schematic view of a structure of a rotating shaft assembly of a telescoping screen structure according to another exemplary embodiment of the present disclosure;

FIGS. 22 and 23 are schematic diagrams of an electronic device according to an exemplary embodiment of the present disclosure in a retracted state and an extended state, respectively;

FIG. 24 is a diagram illustrating a comparison of an electronic device of an exemplary embodiment of the present disclosure when the flexible display is in a retracted state and an extended state, respectively;

fig. 25 is a perspective view of a driving mechanism of an electronic device according to an exemplary embodiment of the present disclosure;

fig. 26 is an exploded view of a driving mechanism of an electronic device according to an exemplary embodiment of the present disclosure;

Fig. 27 is an exploded view of a first reduction gearbox of a driving mechanism of an electronic device according to an exemplary embodiment of the present disclosure;

fig. 28 is a schematic view showing mounting positions of driving mechanisms of electronic devices according to an exemplary embodiment of the present disclosure, respectively;

fig. 29 is a schematic structural view of a slide rail mechanism and a part of a housing of an electronic device according to an exemplary embodiment of the disclosure;

FIG. 30 is an enlarged schematic view at A in FIG. 29;

fig. 31 is a schematic structural view of a rack of a slide rail mechanism of an electronic device according to an exemplary embodiment of the present disclosure;

FIG. 32 is an enlarged partial schematic view of a portion of the spindle assembly of FIG. 22;

FIG. 33 is a cross-sectional view of FIG. 30;

fig. 34 is a schematic structural view of a slide rail mechanism of an electronic device according to another exemplary embodiment of the present disclosure;

fig. 35 is a schematic structural view of a slide rail mechanism of an electronic device according to another exemplary embodiment of the present disclosure;

FIG. 36 is an assembled schematic view of a housing and a flexible display screen, respectively, of an electronic device according to an exemplary embodiment of the present disclosure;

fig. 37 is a top view of an electronic device in a retracted state according to an exemplary embodiment of the present disclosure;

FIG. 38 is a top view of an electronic device in an expanded state, respectively, according to an exemplary embodiment of the present disclosure;

FIG. 39 is a rear view of an electronic device in a retracted state, respectively, in accordance with an exemplary embodiment of the present disclosure;

FIG. 40 illustrates a back view of an electronic device in an expanded state, respectively, according to an exemplary embodiment of the present disclosure;

FIG. 41 is a schematic view showing a structure of a supporting member of an electronic device in a retracted state according to an exemplary embodiment of the present disclosure;

fig. 42 and 43 are schematic structural views of a support assembly of an electronic device according to an exemplary embodiment of the present disclosure in an unfolded state;

FIG. 44 is a cross-sectional view taken along the A-A plane in FIG. 43;

FIG. 45 is an enlarged schematic view at A in FIG. 44;

FIG. 46 is a schematic diagram illustrating an assembly of displacement sensors of an electronic device according to an exemplary embodiment of the present disclosure;

FIG. 47 is a perspective view of a displacement sensor of an electronic device according to an exemplary embodiment of the present disclosure;

FIG. 48 is a cross-sectional view taken along the plane XX-XX in FIG. 46;

fig. 49 is a cross-sectional view of EE-EE of fig. 46.

Detailed Description

Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the invention. Rather, they are merely examples of apparatus and methods consistent with aspects of the invention as detailed in the accompanying claims.

The terminology used in the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. Unless defined otherwise, technical or scientific terms used in this disclosure should be given the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The terms "first," "second," and the like in the description and in the claims, are not used for any order, quantity, or importance, but are used for distinguishing between different elements. Likewise, the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. "plurality" or "plurality" means two or more. Unless otherwise indicated, the terms "front," "rear," "lower," and/or "upper" and the like are merely for convenience of description and are not limited to one location or one spatial orientation. The word "comprising" or "comprises", and the like, means that elements or items appearing before "comprising" or "comprising" are encompassed by the element or item recited after "comprising" or "comprising" and equivalents thereof, and that other elements or items are not excluded. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

The terminology used in the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used in this disclosure and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any or all possible combinations of one or more of the associated listed items.

The present disclosure provides a retractable screen structure and an electronic device, and the retractable screen structure and the electronic device of the present disclosure are described in detail below with reference to the accompanying drawings, and features in the following embodiments and implementations may be combined with each other without conflict.

Referring to fig. 1 to 7, an embodiment of the present disclosure provides an electronic device, which may be a mobile phone, a mobile terminal, a tablet computer, a notebook computer, a terminal handheld device with a screen, a vehicle-mounted display device, or the like. The electronic device may include a telescoping screen structure, a housing, a slide rail mechanism, a spindle assembly 12, and a drive mechanism 99. The telescoping screen structure may include, among other things, a support assembly 60 and a flexible display screen 90.

Wherein the flexible display 90 is provided with a first magnetic assembly 40. The support assembly 60 is supported below the flexible display screen 90, and the support assembly 60 includes a first support plate 61 and a second support plate 62, and the second support plate 62 is connected to the flexible display screen 90 and slidably connected to the first support plate 61. At least one of the first support plate 61 and the second support plate 62 is provided with a second magnetic assembly 50 magnetically engaged with the first magnetic assembly 40.

The flexible screen structure includes an extended state and a retracted state, and when the flexible screen structure is switched between the extended state and the retracted state, the second support plate 62 slides relative to the first support plate 61 in a direction away from or close to the first support plate 61, the flexible display screen 90 moves synchronously with the second support plate 62, and the second support plate 62 is used for supporting an extended portion of the flexible display screen 90 relative to the first support plate 61.

So set up, support flexible display 90 through supporting component 60, the flexible display 90 of supporting through second backup pad 62 is relative first backup pad 61 the part of expansion when switching between expansion state and the state of retrieving, play comprehensive supporting role to flexible display 90, the area that will support is added the biggest as far as possible, the position distribution of supporting point is as even as possible, and consider the problem of part manufacturing, supporting component 60's planarization can control below 0.15, thereby ensure that the flexible display structure can not undercut when the user's finger touch screen presses down under the expansion state, improve user experience. In addition, during the movement process of the flexible display screen 90, the flexible display screen 90 can be flatly attached to the supporting component 60 by the magnetic attraction and matching of the first magnetic component 40 and the second magnetic component 50, so that the problem of arching or virtual position is reduced.

In some alternative embodiments, the first magnetic assembly 40 includes a first metal piece 41 and a second metal piece 42. The first metal piece 41 is connected to a side of the flexible display screen 90 adjacent to the support assembly 60. The second metal piece 42 is connected to the first metal piece 41. In this way, the magnetic attraction force of the first magnetic assembly 40 and the second magnetic assembly 50 can be improved by providing the first magnetic assembly 40 in a double-layered metal structure.

In some alternative embodiments, the flexible display 90 includes a body portion 903 and a bend 904 connected to the body portion 903. The first metal piece 41 has no magnetism, and the first metal piece 41 is connected to one side of the body portion 903 and the bent portion 904, which is close to the support component 60. It will be appreciated that the first metal member 41 fills the entire surface of the flexible display screen 90, facilitating bending of the screen. The second metal piece 42 has magnetism, and is connected to a portion of the first metal piece 41 located in the area where the bending portion 904 is located. It will be appreciated that second metal piece 42 fills the area where bend 904 is located. Alternatively, the first metal piece 41 may be attached to the side of the body portion 903 and the bent portion 904 near the support component 60 by means of a back adhesive. The second metal piece 42 may be attached to a portion of the first metal piece 41 located in the area of the bent portion 904 by using a back adhesive manner. Alternatively, the first metal piece 41 may comprise a mesh metal sheet. The second metal piece 42 may comprise a strip-shaped metal sheet. In this embodiment, the metal members may be steel sheets, that is, the first metal member 41 may include grid steel sheets, and the second metal member 42 may include strip steel sheets. Of course, the structure, shape, and material of the first metal piece 41 and the second metal piece 42 may be adjusted according to practical situations, which is not limited in the disclosure.

It can be appreciated that when the flexible display screen 90 is in the outward unfolding motion or the inward retracting motion, the flexible display screen 90 can be flatly attached to the supporting component 60 through the magnetic attraction cooperation of the first magnetic component 40 and the second magnetic component 50, so that the pushing force for pushing the flexible display screen 90 to move is greater than the magnetic attraction shearing force, and the flexible display screen 90 can be flatly attached to the supporting component 60, thereby solving the problem of arching or virtual position.

In some alternative embodiments, the first support plate 61 includes a first body portion 611 and a plurality of first guide portions disposed at sides of the first body portion 611, the first guide portions extending in a first direction X, the plurality of first guide portions being spaced apart in a second direction Y perpendicular to the first direction X. The second support plate 62 includes a second main body 621 and a plurality of second guide portions slidably engaged with the first guide portions, the plurality of second guide portions being disposed on a side portion of the second main body 621, the second guide portions extending in the first direction X, and the plurality of second guide portions being disposed at intervals in the second direction Y.

Optionally, the first guide portion includes one of the guide groove 612 and the guide rail 622 that are mutually adapted, and the second guide portion includes the other of the guide groove 612 and the guide rail 622 that are mutually adapted. In this embodiment, the first guide portion includes a guide groove 612 and the second guide portion includes a guide rail 622. It can be appreciated that the first support plate 61 and the second support plate 62 of the support assembly 60 adopt a phase-sequence spaced support manner, which is similar to a comb or a comb tooth structure, and the second support plate 62 slides relative to the first support plate 61 to reduce the distance between the two support positions as much as possible, so that the effect of supporting the flexible display screen 90 can be better.

Referring to fig. 6, 8A and 8B, in some alternative embodiments, the second magnetic assembly 50 includes at least one magnetic attraction member 51, at least one of the second main body 621 and the second guide portion is provided with a groove 52, and the magnetic attraction member 51 is disposed in the groove 52, so that the installation of the magnetic attraction member 51 is more firm. Alternatively, the magnetic attraction member 51 may be fixed in the groove portion 52 by dispensing and fixing, and the connection strength with the groove portion 52 is enhanced. Further, the magnet 51 may be a magnet with N/S poles on the front and back sides. The magnets may be of segmented design, with all N poles facing the flexible display 90, or all S poles facing the flexible display 90, or with a portion of the magnets having N poles facing the flexible display 90 and another portion of the magnets having S poles facing the flexible display 90. The magnets may also be N/S pole interleaved toward the flexible display 90. For example, the N pole of the first magnet is oriented toward the flexible display 90, the S pole of the second magnet is oriented toward the flexible display 90, the N pole of the third magnet is oriented toward the flexible display 90, and so on. In this way, combined, the magnetic attraction force is greatly improved.

In some alternative embodiments, the second body 621 is provided with a first groove portion (not shown) extending along the first direction X. The second guiding portion is provided with a second groove portion (not shown), and the second groove portion extends along the second direction Y. It will be appreciated that the magnetic attraction member 51 may be provided solely in the first recess portion. Alternatively, the magnetic attraction member 51 may be provided solely in the second groove portion. Alternatively, the magnetic attraction pieces 51 may be provided in both the first groove portion and the second groove portion. In the present embodiment, the magnetic attraction pieces 51 are provided in both the first groove portion and the second groove portion. Of course, the arrangement of the magnetic attraction member 51 may be adjusted according to practical situations, which is not limited in the present disclosure.

In some alternative embodiments, the magnetic attraction member 51 is provided in plurality. (1) The second main body 621 may be separately provided with at least two first groove portions spaced apart along the second direction Y, and the magnetic attraction member 51 is disposed in the first groove portion. Or, (2) at least one of the second guide portions may be provided with at least two second groove portions provided at intervals along the first direction X, in which the magnetic attraction pieces 51 are provided. Or, (3) the second main body 621 is provided with at least two first groove portions spaced apart along the second direction Y, and at least one second guide portion is provided with at least two second groove portions spaced apart along the first direction X, and the magnetic attraction pieces 51 are disposed in the first groove portions and the second groove portions. In the present embodiment, the magnetic attraction member 51 is arranged as described in (3) above. Of course, the arrangement of the magnetic attraction member 51 may be adjusted according to practical situations, which is not limited in the present disclosure.

Referring to fig. 9-13, in some alternative embodiments, the slide rail mechanism includes a bracket 11 and a slide rail assembly 20, the slide rail assembly 20 including a fixed base 21, a slider 22 for connecting a flexible display screen 90 of a telescoping screen structure, and an elastic assembly 23. The fixed seat 21 is fixedly connected with the bracket 11, the sliding piece 22 is slidably disposed on the fixed seat 21 along a first direction X (vertical direction shown in fig. 11), a first end 2301 of the elastic component 23 is connected with the fixed seat 21, and a second end 2302 of the elastic component 23 is connected with the sliding piece 22. When the sliding member 22 slides along the first direction X relative to the fixed seat 21, the second end of the elastic component 23 and the flexible display screen 90 are driven to move together. The elastic component 23 is stretched or compressed to deform under the driving of the sliding piece 22, so as to generate pretension force on the flexible display screen 90. It will be appreciated that the slider 22 slides relative to the holder 21 in the direction of the arrow in fig. 11, stretching the elastic member 23 causes the elastic member 23 to exert a reverse pulling force.

Through the arrangement, the sliding piece 22 moves along the first direction X relative to the fixed seat 21, and can drive the flexible display screen 90 of the telescopic screen structure to move together, so that the flexible display screen 90 is unfolded and retracted. The sliding piece 22 drives the elastic component 23 to move together, plays a role in stretching the elastic component 23, can generate pretension force on the flexible display screen 90, enables the flexible display screen 90 to be flatter when being unfolded, and prevents the problems that the whole machine slides open to be a screen bulge, bulge and distortion in vision.

In some possible embodiments, the sliding rail assembly 20 further includes at least one guide rail 24, the guide rail 24 is disposed on the fixing base 21 and extends along the first direction X, the sliding member 22 is provided with a sliding groove 220 corresponding to the guide rail 24, and the sliding member 22 is slidably disposed on the guide rail 24 through the sliding groove 220. In the present embodiment, the number of the guide rails 24 is four, and the guide rails are symmetrically disposed on the fixing base 21, so that the sliding member 22 is more stable when sliding. In other examples, other numbers of rails 24 are possible, as the disclosure is not limited in this regard.

In some possible embodiments, the sliding rail assembly 20 further includes at least one limit stop 25 disposed at an end (an upper end in fig. 11) of the fixing base 21 away from the bracket 11, and the sliding member 22 is provided with a limit portion 221 in abutting engagement with the limit stop 25. The stopper 25 is engaged with the stopper 221 of the slider 22 in an abutting manner, and can limit the initial position of the slider 22 and prevent the slider 22 from being separated from the guide rail 24. In this embodiment, the limiting portions 221 may be understood as grooves, the number of the limiting blocks 25 is two, the limiting portions 221 are symmetrically disposed on the fixing base 21, and the limiting blocks 25 are disposed corresponding to the limiting blocks 221, which is not limited in this disclosure. In the example shown in fig. 11, the limit stopper 25 is provided at the upper end of the fixing base 21, the start position of the slider 22 is provided at the upper end of the fixing base 21, and the elastic member 23 applies an elastic pretension to the slider 22 in this state, thereby holding the slider 22 at the start position.

Referring to fig. 12 to 14, in some possible embodiments, at least one side portion of the guide rail 24 is provided with a clamping portion 241, and the slider 22 is provided with a first fastening portion 222 that is in fastening engagement with the clamping portion 241. The sliding piece 22 is in clamping fit with the clamping part 241 of the guide rail 24 through the first clamping part 222, so that the sliding piece 22 can be connected with the guide rail 24 more firmly, and the sliding piece 22 can slide along the guide rail 24 more firmly. It will be appreciated that the engaging portion 241 may be a barb formed by a sheet metal part to prevent the sliding member 22 from moving away from the guide rail 24. In the present embodiment, the two sides of the guide rail 24 are provided with the clamping portions 241, which is not limited by the disclosure.

Referring to fig. 15, in some possible embodiments, a second fastening portion 223 is provided on a side portion of the sliding member 22, and is in a locking engagement with a side edge of the fixing base 21. The sliding piece 22 is matched with the side edge of the fixed seat 21 in a clamping way through the second clamping part 223, so that the connection between the sliding piece 22 and the fixed seat 21 is firmer, the sliding piece 22 is prevented from being separated from the fixed seat 21 when sliding, and the stability of the sliding piece 22 when sliding is improved. Further, the sliding rail assembly 20 further includes a plastic buckle 224, which is wrapped around and buckled to the side of the fixing seat 21, and the second buckle portion 223 is clamped to the plastic buckle 224. The plastic buckle 224 can reduce the friction between the second buckle part 223 and the side edge of the fixing seat 21, and reduce the abrasion to ensure smooth sliding. In this embodiment, the plastic buckle 224 may be made of POM (Polyoxymethylene) plastic, which is a self-lubricating plastic. The sliding piece 22 and the plastic buckle 224 can be combined together through a common-mode injection molding process (insert-molding) to serve as a part, a design gap between the plastic buckle 224 and the side edge of the fixing seat 21 is 0.05, the sliding piece 22 is guaranteed to slide along the extending direction of the guide rail 24, namely the first direction X, and structural stability is improved.

Referring to fig. 16, in some possible embodiments, the fixing base 21 is provided with a step portion 211 extending along the first direction X, the sliding member 22 is provided with an abutment block 225 in abutting engagement with the step portion 211, and the sliding member 22 is further prevented from being separated from the fixing base 21 when sliding by the abutment block 225 engaging with the step portion 211.

Referring to fig. 17, in some possible embodiments, the elastic assembly 23 includes a first rod 231, a second rod 232, and an elastic member 233, where the first rod 231 and the second rod 232 are inserted into each other and can slide relative to each other, and the elastic member 233 is connected between the first rod 231 and the second rod 232. The first rod 231 is connected to the fixed seat 21, and the second rod 232 is connected to the slider 22. The elastic member 233 may be a spring, a tension spring, etc., and may be pretensioned during assembly to hold the slider 22 in the starting position. The spring starts to operate when the first lever 231 and the second lever 232 are pulled apart. When the sliding member 22 slides relative to the fixed seat 21, the second rod 232 is driven to slide relative to the first rod 231, so as to match the first rod 231 to stretch or compress the elastic member 233, so that the elastic member 233 is deformed to generate elastic force on the sliding member 22.

Further, the first rod 231 and the second rod 232 are both provided with sliding grooves, and the first rod 231 and the second rod 232 are inserted into each other and can slide relatively. The first end (lower end shown in fig. 17) of the first rod 231 is fixed to the fixing base 21 by a rivet, the first end (upper end shown in fig. 17) of the second rod 232 is fixed to the sliding member 22 by a rivet, the second end of the first rod 231 protrudes outwards to form a first protrusion 234, the second end of the second rod 232 protrudes outwards to form a second protrusion 235, the number of elastic members 233 is multiple, and the elastic members 233 are uniformly arranged between the first protrusion 234 and the second protrusion 235, so that a sufficient elastic force can be provided. When the sliding member 22 slides relative to the fixed seat 21, the second rod 232 is driven to slide relative to the first rod 231, so that the elastic member 233 is stretched in cooperation with the first rod 231, and the elastic member 233 is deformed to generate a reverse tensile force on the sliding member 22, so as to ensure that the flexible display screen is in a tensioned state.

In some possible embodiments, the number of elastic components 23 is plural, including a first elastic component 23A, a second elastic component 23B, and a third elastic component 23C, where the second elastic component 23B and the third elastic component 23C are symmetrically disposed on two sides of the first elastic component 23A. The elastic members 233 of the first elastic component 23A extend along the first direction X, and the elastic members 233 of the second elastic component 23B and the third elastic component 23C are symmetrically disposed along the first direction X and are obliquely disposed with respect to the first direction X.

Due to the limited space, it is difficult for a single rail to have such a large elastic travel. Through the above arrangement, the three groups of elastic components can form a relay form, so as to improve the sliding stroke of the elastic components, wherein the second elastic component 23B and the third elastic component 23C are of the same design and are symmetrically distributed on two sides of the first elastic component 23A, and the initial compression amount of the elastic component of the first elastic component 23A can be slightly larger than that of the elastic components of the second elastic component 23B and the third elastic component 23C, so that the larger sliding stroke is improved. Assuming a total design sliding travel of 30.00mm, the first spring assembly 23A may start working with the slider 22 sliding 19 mm.

In some possible embodiments, the entire slide rail assembly 20 may be secured to the bracket 11 by staking. One end of the bracket 11 may include a connection plate 111, and the fixing base 21 may be a stamped metal plate fixed to the connection plate 111 through a riveting process. The flexible display 90 is secured to the slider 22 of the slide assembly 20. The bracket 11 can be made of aluminum alloy material, so that the structural strength is improved. The slider 22 may be manufactured by a SUS stainless steel plate and POM plastic common mode injection molding process. The stainless steel plate can serve as a main body to play a role in supporting strength, the sliding groove can be formed by POM plastic injection molding, and the sliding groove can slide with the fixing seat 21 and the guide rail 24 mutually, so that friction force is reduced. The limit stop 25 may be made of plastic, and may limit the initial position of the sliding member 22, or may prevent the sliding member 22 from being separated from the guide rail 24. The guide rail 24 may be formed by a stainless steel stamping process and fixed to the fixing base 21 by spot welding. Cooperates with the sliding groove 220 on the sliding member 22 to form a reverse hook structure for preventing the sliding member 22 from moving away from the guide rail 24 when sliding. The exposed surface of the slider 22 may be adhesively secured to the flexible display screen 90 as an adhesive area 226.

Referring to fig. 9 and 18, an embodiment of the present disclosure provides a telescoping screen structure including a slide rail mechanism and a flexible display screen 90 as described in the above embodiments. The rotating shaft assembly 12 is disposed on a side of the bracket 11 away from the sliding rail assembly 20, and an axial direction of the rotating shaft assembly 12 is perpendicular to the first direction X. The first end of the flexible display 90 is connected to the slider 22, and the second end of the flexible display 90 is wound around the rotating shaft assembly 12.

The rotating shaft assembly 12 includes a rotating shaft support, a rotating shaft 122 and a rotating wheel, the rotating shaft support is connected to one side of the bracket 11 far away from the sliding rail assembly 20, the rotating shaft support is provided with a shaft hole, and the circumference of the shaft hole is perpendicular to the first direction X. The rotating shaft 122 is arranged in the shaft hole in a penetrating way, and the rotating wheel is sleeved on the rotating shaft 122. The flexible display screen 90 is wound around the rotating wheel, and when the flexible display screen 90 is unfolded or retracted, the rotating wheel is driven to rotate. It will be appreciated that the first end 901 of the flexible display 90 is coupled to the slider 22 of the slide rail assembly 20 and the second end 902 of the flexible display 90 is wrapped around the wheel. In this embodiment, the flexible display screen 90 is formed by attaching a flexible OLED screen to a layer of extremely thin stainless steel mesh, and has great flexibility.

Through the arrangement, when the flexible display screen 90 is unfolded or retracted around the rotating wheel arranged on the rotating shaft assembly 12, the rotating wheel is driven to rotate, namely, the rotating wheel is driven to rotate, and the rotating wheel can play a role of a pulley, so that the flexible display screen 90 is unfolded and retracted more smoothly, friction force and energy loss in the process of unfolding or retracting the flexible display screen 90 are effectively reduced, and the flexible display screen 90 can be unfolded or retracted more smoothly.

In some possible embodiments, the rotating shaft 122 is fixedly connected to the shaft hole, and the rotating wheel is rotatably connected to the rotating shaft 122. It will be appreciated that the shaft 122 is fixedly connected to the shaft support, the rotatable wheel is rotatable relative to the shaft 122, and the shaft is non-rotatable relative to the shaft support. When the flexible display screen 90 is unfolded or retracted, only the rotating wheel is driven to rotate.

Referring to fig. 9 and 19, in some possible embodiments, the shaft support includes a plurality of sub-supports 121 disposed on the support 11 at intervals along a direction perpendicular to the first direction X, the sub-supports 121 are provided with sub-shaft holes, the sub-shaft holes of the plurality of sub-supports 121 are coaxially disposed to form the shaft holes, and the shaft 122 is inserted into the plurality of sub-shaft holes to be fixedly connected with the plurality of sub-supports 121. The runner includes a plurality of sub-runners 123, and one sub-runner 123 is disposed between two adjacent sub-supports 121. It can be understood that the rotating shaft support is set to a plurality of sub-supports 121, the rotating wheel is set to a plurality of sub-rotating wheels 123, the sub-supports 121 and the sub-rotating wheels 123 are alternately arranged, the rotating performance of the rotating wheel is ensured, and meanwhile, the strength of the rotating shaft support can be enhanced, and the overall structural strength is improved. It will be appreciated that each sub-support 121 of the spindle support is fixedly connected to the support 11, or may be integrally formed with the support 11. The sizes of the sub-holders 121 may be different, and may be divided into a small holder and a large holder, for example, the sub-holders located at both sides may be small holders, and the sub-holders located in the middle may be large holders. The size of each sub-wheel 123 may also be different, for example, divided into a large wheel and a small wheel, and may be set according to actual needs, which is not limited in the present disclosure.

In some possible embodiments, the rotating shaft assembly 12 further includes a plurality of first bearings 124 sleeved on the rotating shaft 122, and two sides of the sub-rotating wheel 123 are respectively provided with one first bearing 124. The first bearing 124 includes a bearing inner ring and a bearing outer ring rotatably connected to the bearing inner ring, the bearing inner ring is connected to the rotating shaft 122, and the bearing outer ring is connected to the sub-rotating wheel 123. It can be appreciated that the sub-rotor 123 rotates relative to the rotating shaft 122 through the first bearing 124, the first bearing 124 can reduce friction loss caused by rotation of the sub-rotor 123, and the bearing inner ring and the rotating shaft 122 can be designed in a zero-fit manner in a radial direction so as to ensure that the bearing inner ring cannot rotate along with rotation of the sub-rotor 123. The sub-rotor 123 and the rotating shaft 122 may be designed to avoid in the radial direction, so as to ensure that a gap is formed between the sub-rotor 123 and the rotating shaft 122 to realize rotation.

Referring to fig. 20, in order to prevent the bearing inner ring from rotating along with the rotation of the sub-rotating wheel 123, that is, to ensure that the bearing inner ring does not rotate relative to the rotating shaft 122, the rotating shaft assembly 12 further includes a plurality of bearing pads 125 sleeved on the rotating shaft 122, and one bearing pad 125 is disposed on a side portion of each of the first bearings 124. One end of the bearing spacer 125 is abutted to the bearing inner ring, and the other end of the bearing spacer 125 is abutted to the adjacent sub-support 121, so that the bearing inner ring and the adjacent sub-support 121 can be mutually pressed, the bearing inner ring is prevented from rotating along with the rotation of the sub-rotating wheel 123, and the bearing inner ring is prevented from rotating relative to the rotating shaft 122. Thus, the rotation of the sub-rotor 123 is completely by the rotation of the bearing outer ring, and the friction loss is low.

Optionally, in some possible embodiments, the bearing pad 125 is made of copper or stainless steel, and has a cross section similar to a bowl structure, and has mechanical properties that the thickness direction of the bowl structure is slightly compressible, the bottom end of the bowl structure abuts against the bearing inner ring, and the bowl mouth end of the bowl structure abuts against the adjacent sub-support 121, so that the bearing inner ring and the adjacent sub-support 121 are pressed against each other.

In some possible embodiments, the shaft assembly 12 further includes two sets of first fasteners 126, one end of the shaft 122 is fixedly connected to the shaft support by one set of the first fasteners 126, and the other end is fixedly connected to the shaft support by the other set of the first fasteners 126. It will be appreciated that the first fastener 126 is fixedly coupled to the end of the shaft 122 through the outermost sub-mount 121, thereby fixing the shaft 122 to the shaft mount. Optionally, a spacer 127 is further disposed between the first fastener 126 and the spindle support. The first fastening member 126 may be a snap screw, and the pad 127 is disposed between the first fastening member 126 and the outermost sub-mount 121, so that the connection between the spindle 122 and the spindle mount is more firm. Further, the gap between the sub-support 121 and the bearing inner ring may be set to zero or slightly interfere (depending on the material and the size of the parts), so that the bearing spacer 125 and the bearing inner ring have a pressure by the locking force of the snap screws at the two ends, and the pressure can ensure that the bearing inner ring cannot rotate relative to the rotating shaft 122.

In this embodiment, the sub-rotating wheel 123 may be formed by injection molding of engineering plastic POM, the middle through hole is provided with grooves at two ends, the first bearing 124 may be placed on the rotating shaft 122, and the sub-rotating wheel may be passively rotated on the rotating shaft 122 through the first bearing 124 after assembly. The rotating shaft 122 can adopt a D-shaped shaft, and the cross section of the rotating shaft is in a D shape, so that the main function of the rotating shaft is to fix the bearing inner ring and prevent the bearing inner ring from rotating relative to the rotating shaft. The rotating shaft 122 may be made of stainless steel and is disposed through the plurality of sub-supports 121. Screw threads 1220 can be provided at both ends of the rotating shaft 122 for fastening with the first fastening member 126, and can be conveniently fixed on the middle frame of the electronic device, so as to fix the rotating shaft. The first fastener 126 may be made of metal, such as a snap screw, and is fastened to the shaft 122 through the pad 127 to lock the shaft 122 to the shaft support. The first bearings 124 may be made of stainless steel or ceramic, and are mounted on the sub-rotating wheels 123, and each of the two ends of each rotating wheel 123 is respectively mounted with a first bearing 124 and a bearing pad 125. The bearing pads 125 may be made of metal. When the sub-rotating wheels are mounted on the rotating shafts, a bearing gasket is placed on two sides of each rotating wheel, the rotating shafts penetrate through inner holes of the bearing gaskets, after two ends of each rotating shaft are locked through the sub-screws, the gasket is used for fixing the bearing inner rings, the bearing inner rings are prevented from rotating along with the bearing outer rings, and the bearing inner rings are grounded through the first bearings and the support.

Referring to fig. 9 and 21, in some possible embodiments, the rotating shaft 122 is rotatably connected to the shaft hole, and the rotating wheel is fixedly connected to the rotating shaft 122. It will be appreciated that the rotating shaft 122 is fixedly connected to the rotating wheel, the rotating wheel does not rotate relative to the rotating shaft 122, the rotating shaft 122 can rotate relative to the rotating shaft support, and the rotating wheel and the rotating shaft 122 are driven to rotate together when the flexible display screen 90 is unfolded or retracted.

In some possible embodiments, the shaft support includes a plurality of sub-supports 121 disposed on the support 11 at intervals along a direction perpendicular to the first direction X, the sub-supports 121 are provided with sub-shaft holes, the sub-shaft holes of the plurality of sub-supports 121 are coaxially disposed to form the shaft holes, and the shaft 122 is disposed through the plurality of sub-shaft holes so as to be fixedly connected with the plurality of sub-supports 121. The runner includes a plurality of sub-runners 123, and one sub-runner 123 is disposed between two adjacent sub-supports 121. It can be understood that the rotating shaft support is set to a plurality of sub-supports 121, the rotating wheel is set to a plurality of sub-rotating wheels 123, the sub-supports 121 and the sub-rotating wheels 123 are alternately arranged, the rotating performance of the rotating wheel is ensured, and meanwhile, the strength of the rotating shaft support can be enhanced, and the overall structural strength is improved. It will be appreciated that each sub-support 121 of the spindle support is fixedly connected to the support 11, or may be integrally formed with the support 11. The sizes of the sub-holders 121 may be different, and may be divided into a small holder and a large holder, for example, the sub-holders located at both sides may be small holders, and the sub-holders located in the middle may be large holders. The size of each sub-wheel 123 may also be different, for example, divided into a large wheel and a small wheel, and may be set according to actual needs, which is not limited in the present disclosure.

In some possible embodiments, the shaft assembly 12 further includes two second bearings 128 respectively sleeved on two ends of the shaft 122, and the end of the shaft 122 is rotatably connected to the shaft support through the second bearings 128. The second bearing 128 includes a bearing inner race and a bearing outer race rotatably coupled to the bearing inner race, the bearing inner race coupled to the shaft support, and the bearing outer race coupled to the shaft 122. It will be appreciated that the rotation of the shaft 122 relative to the sub-mount 121 of the shaft mount via the second bearing 128 reduces frictional losses caused by rotation of the shaft 122. The sub-wheel 123 and the shaft 122 may be designed to be zero-fit in the radial direction, so as to ensure that the sub-wheel 123 rotates along with the rotation of the shaft 122. The sub-support 121 of the spindle support and the spindle 122 may be of a design of avoiding in the radial direction, so as to ensure that a gap is formed between the sub-rotor 123 and the spindle 122 to realize rotation. In this embodiment, only two second bearings 128 are required to rotate the rotating shaft 122 relative to the rotating shaft support, so that the number of bearings is reduced, and the model design is simplified.

In some possible embodiments, the shaft assembly 12 further includes two shaft covers 130, where one shaft cover 130 abuts against an adjacent inner ring of the shaft 122 from one end of the shaft hole, and the other shaft cover 130 abuts against an adjacent inner ring of the shaft 122 from the other end of the shaft hole, and the shaft cover 130 compresses the bearing inner ring, so that a limiting effect can be achieved on the shaft 122 in the axial direction, and displacement of the shaft 122 in the axial direction is prevented.

In some possible embodiments, the spindle assembly 12 further includes a plurality of second fasteners 129, the second fasteners 129 fixedly coupled to the spindle 122 through the sub-rotor 123. It will be appreciated that one sub-wheel 123 may be fixedly coupled to the shaft 122 by one second fastener 129, or may be fixedly coupled to the shaft 122 by a plurality of second fasteners 129, which is not limited in this disclosure.

Referring to fig. 25 to 28, an embodiment of the present disclosure provides an electronic device, which may be a mobile phone, a mobile terminal, a tablet computer, a notebook computer, a terminal handheld device with a screen, a vehicle-mounted display device, or the like. The electronic device includes a housing, a telescoping screen structure as described in the above embodiments, and a drive mechanism 99.

The housing includes a first housing 91 and a second housing 92 slidably disposed in the first housing 91 along the first direction X, where the first housing 91 and the second housing 92 enclose to form a housing structure 991 having an opening. The telescopic screen structure is disposed in the accommodating structure 991, the rotating shaft assembly 12 is located at a side close to the second housing 92, the first end 901 of the flexible display screen 90 is located at a side close to the bottom of the housing, and the second end 902 of the flexible display screen 90 is connected with the first housing 91 to cover the opening. The driving mechanism 99 is disposed in the accommodating structure 991, and the driving mechanism 99 is connected to the sliding rail mechanism and is used for driving the sliding rail mechanism to move along the first direction X. Alternatively, the first housing 91 may be provided with a support plate 93, and the second end of the flexible display screen 90 is connected to the support plate 93, and the support plate 93 may play a supporting protection role on the flexible display screen 90.

The driving mechanism 99 includes a frame 30, and a driving assembly and a transmission assembly mounted to the frame 30. The frame body 30 may be provided with a mounting member 302 for connection with a center frame of the electronic device, and the mounting member 302 is fixed to the center frame by a fastener, thereby mounting the driving mechanism 99 to the center frame. Alternatively, the number of the driving mechanisms 99 may be set according to actual needs, in the example shown in fig. 28, the number of the driving mechanisms 99 is two, and the driving mechanisms are symmetrically disposed on the first housing 91, so that the sliding rail mechanisms can be driven to move more stably, so that the stress on two sides of the sliding rail mechanisms is uniform, and the movement is more stable.

The driving assembly comprises a driving piece 31 and a reduction gearbox structure 32 connected with the driving piece 31, and the driving piece 31 and the reduction gearbox structure 32 are both installed on the frame body 30. Alternatively, the driving member 31 may be a driving motor or a driving motor.

The transmission assembly comprises a first transmission member 14 and a second transmission member 15 movably connected with the first transmission member 14, wherein the first transmission member 14 is installed on the frame 30 and connected with the reduction gearbox structure 32, and the second transmission member 15 is used for being in transmission connection with a flexible display screen of a telescopic screen structure.

The driving member 31 outputs a first torque to the reduction gearbox structure 32, the reduction gearbox structure 32 converts the first torque into a second torque and outputs the second torque to the first driving member 14 to drive the first driving member 14 to rotate, and the second driving member 15 moves relative to the first driving member 14 to drive the flexible display screen to move. Wherein the first torque is less than the second torque. It will be appreciated that the driving mechanism drives the slide rail mechanism to move along the first direction X, so as to drive the second housing 92, the slide rail assembly 20, the first end of the flexible display screen 90, and the sliding member 22 to move along the first direction X relative to the first housing 91, so as to switch the flexible display screen 90 between the retracted state and the extended state.

Through the arrangement, the driving mechanism 99 converts the first torque output by the driving piece into the second torque with larger torque through the reduction gearbox structure, and then transmits the second torque to the first driving piece to enable the first driving piece to rotate, so that the flexible display screen is driven to move, the low torque of the driving piece can be converted into the high torque, the first driving piece is driven to rotate, and the flexible display screen is driven to move better.

Referring to fig. 1-3, in some possible embodiments, the spindle assembly 12 is disposed within the second housing 92 at an end remote from the first housing 91. The spindle assembly 12 includes a track portion 120. The thickness of the track portion 120 in a third direction Z perpendicular to the first direction X gradually decreases from an end closer to the first housing 91 to an end farther from the first housing 91 in the first direction X. The flexible display screen 90 is wound around the track portion 120, a first end of the flexible display screen 90 is connected with the sliding rail mechanism, and a second end of the flexible display screen 90 is connected with the first housing 91 and covers the opening. It is understood that the bending portion 904 of the flexible display 90 is wound around the track portion 120.

It will be appreciated that the thickness of the track portion 120 in the third direction Z is set to gradually decrease in the first direction X from the end closer to the first housing 91 to the end farther from the first housing 91, that is, the thickness of the track portion 120 in the third direction Z gradually decreases from left to right in the example of fig. 1 and 2, forming a taper-like structure. Thus, when the flexible display screen 90 moves, even if forces in different directions exist when the screen is bent, under the magnetic attraction cooperation effect of the first magnetic component 40 and the second magnetic component 50, the flexible display screen 90 can be always attached to the track portion 120 at a position close to the rotating shaft position component 12, so that the flexible display screen 90 can be better attached to the supporting component 60, a relatively flat display surface can be realized, and the problem of arching of the screen is solved.

In some alternative embodiments, the track portion 120 includes a track surface, the flexible display screen 90 is wound around the track surface, the end surface of the track surface away from the first housing 91 is an arc surface, and the flexible display screen 90 may bend along the track surface, so that the running track of the end portion of the flexible display screen 90 is an elliptical motion track, and the problem of arching caused by forces in different directions of the screen may be counteracted. Optionally, in this embodiment, the track surface is elliptical. Of course, in other examples, the track surface may take other shapes, for example, the track surface may include a first track surface and a second track surface connected to two ends of the first track surface, where the first track surface may be an arc surface, and may be understood as an end surface far from the first housing 91. The second track surface may be a plane, one end of the second track surface is connected to the first track surface, and the other end extends toward the direction outside the housing, and forms an included angle with the first direction, so that the thickness of the track portion 120 along the third direction Z gradually decreases from the end close to the first housing 91 to the end far from the first housing 91 along the first direction X.

In some alternative embodiments, the track portion 120 includes a track body 1201 and a runner 123, where the track body 1201 forms a receiving cavity, and the runner 123 is movably disposed in the receiving cavity. The flexible display screen 90 is wound around the track body 1201 and a portion of the rotating wheel 123, and the outer contour surface of the track body 1201 and a portion of the outer contour surface of the rotating wheel 123 together form the track surface. In this way, the track body 1201 and the outer contour surface of the runner 123 cooperate to form the oval track surface of the track portion 120, so that the problem of arching at the bending position when the screen moves can be solved.

In some possible embodiments, the drive assembly may further include a control circuit board 312 coupled to the drive member 31 for controlling the drive member 31 upon command. The control circuit board 312 may be a flexible FPC circuit board. When the flexible display screen needs to be unfolded, the terminal mainboard transmits an unfolding command to the control circuit board 312, the control circuit board 312 controls the driving motor to rotate, the driving motor amplifies the torque of the driving motor through the reduction gearbox structure 32, the second transmission piece 15 is driven to linearly run relative to the first transmission piece 14, and the second transmission piece 15 drives the flexible display screen to be unfolded outwards, so that the flexible display screen is unfolded. When the flexible display screen needs to be retracted, a retraction command can be sent to the terminal main board by clicking the display screen of the electronic equipment, the terminal main board transmits the retraction command to the control circuit board 312, the control circuit board 312 controls the driving motor to rotate (opposite to the direction of the extension rotation), the driving motor amplifies the torque of the driving motor through the reduction gearbox structure 32, the second transmission piece 15 is driven to linearly run relative to the first transmission piece 14, and the second transmission piece 15 drives the flexible display screen to retract to the initial position. In this embodiment, the control circuit board 312 is connected to the driving motor by welding, and the control circuit board 312 is connected to the terminal motherboard or connected to the motherboard terminal by a BTB connector, so as to achieve the energizing of the driving motor, and the driving motor is controlled to rotate by a control signal.

In some possible embodiments, the drive motor may be a dc stepper motor, which is an open loop control motor that converts an electrical pulse signal into an angular or linear displacement. In the case of non-overload, the rotation speed of the motor and the stop position are only dependent on the frequency and the pulse number of the pulse signal, and are not influenced by load change, when the step driver receives a pulse signal, the step driver drives the step motor to rotate by a fixed angle in a set direction, and the rotation of the step motor is operated step by the fixed angle. The angular displacement can be controlled by controlling the number of pulses, so that the aim of accurate positioning is fulfilled. Meanwhile, the rotating speed and the acceleration of the motor can be controlled by controlling the pulse frequency, so that the aim of speed regulation is fulfilled, and the rotating torque force is input.

The first transmission member 14 is a screw, the second transmission member 15 is a nut in threaded engagement with the screw, and two ends of the screw are connected with the frame 30 through bearings 141. The support 11 of the telescopic screen structure is provided with a transmission member 13. The screw rod extends along the first direction X, and the nut abuts against the transmission member 13. The driving motor drives the screw rod to rotate and drives the nut and the transmission piece to move along the first direction X, so that the sliding rail mechanism is driven to move along the first direction X. It should be noted that the first transmission member and the second transmission member may also adopt a rack and pinion structure, a worm and gear structure, and the like, which is not limited in this disclosure.

In some possible embodiments, the driving mechanism 99 further includes a guide rod 33 disposed on the frame 30, and the guide rod 33 is disposed parallel to the screw. The nut comprises a first sleeving part 151 and a second sleeving part 152, the first sleeving part 151 is in threaded connection with the screw rod, and the second sleeving part 152 is sleeved on the guide rod 33. The second transmission member 15 is further provided with a bump 153 for abutting against the transmission member 13 of the bracket 11 of the telescopic screen structure. It will be appreciated that the nut is threadably coupled to the lead screw by the first socket 151, and that the nut moves linearly relative to the lead screw as the lead screw rotates. During the movement, the second sleeve joint part 152 moves along the guide rod 33, so as to guide the nut.

In some possible embodiments, the driving member 31 includes an output shaft 311, and the reduction box structure 32 includes a first reduction box and a second reduction box. The first reduction gearbox comprises a first gear 321, the second reduction gearbox comprises a second gear 322 and a third gear 323 (which can be understood as a screw gear) matched with the second gear 322, the third gear 323 is connected with the first transmission member 14, the second gear 322 is matched with the first gear 321, and the first gear 321 is connected with the output shaft 311. The output shaft 311 outputs a first torque to the first gear 321, which is converted into a second torque by the second gear 322 and the third gear 323 and output to the first transmission 14. The low torque output from the drive motor can be converted into high torque by the tooth engagement of the first gear 321, the second gear 322, and the third gear 323.

In some possible embodiments, the reduction box structure 32 further includes a reduction box end cap 34 fixedly attached to one side of the frame 30. Optionally, a side frame 301 for fixedly connecting with the end cover 34 of the reduction gearbox is provided on the side of the frame 30, and the end cover 34 of the reduction gearbox is fixed on the side frame 301. The reduction box end cap 34 is secured to the side frame 301 by a plurality of fasteners 342 (e.g., screws). The first gear 321 and the second gear 322 are both connected with the gearbox end cover 34, the third gear 323 is connected with the gearbox end cover 34 through the first transmission member 14, and the gearbox end cover 34 plays a role in fixing the first gear 321, the second gear 322, the third gear 323 and the first transmission member 14.

In some possible embodiments, the first reduction gearbox includes a first bushing 324 secured to the gearbox end cap 34, and the first gear 321 is mounted to the first bushing 324. Optionally, the end cover 34 of the reduction gearbox is provided with a first through hole 341, the first bushing 324 is fixed to the first through hole 341, and the first gear 321 is a sun gear and is mounted on the first bushing 324. The second reduction gearbox comprises a limiting column 35 fixed on the end cover 34 of the reduction gearbox, the second gear 322 is mounted on the limiting column 35, and the limiting column 35 plays a role in limiting and fixing the second gear 322.

In some possible embodiments, the first transmission member 14 is a screw, an end portion of the screw is connected to the reduction gearbox end cover 34 through a bearing 141, and the third gear 323 is engaged with the screw. Optionally, the end cover 34 of the reduction gearbox is further provided with a second through hole 343, a bearing 141 is installed in the second through hole 343, and one end of the screw is installed on the bearing 141, so as to be fixed on the frame 30.

In some possible embodiments, the first reduction gearbox further comprises: a stationary ring gear 36, drive teeth 37, a planet carrier 38 and planet gears 39.

The stationary ring gear 36 is connected to the driving member 31, and the output shaft 311 extends into the stationary ring gear 36.

The driving teeth 37 are mounted in the stationary ring gear 36 and fixed to the output shaft 311. Optionally, the first reduction gearbox further comprises a second bushing 371, and the driving teeth 37 are mounted on the second bushing 371 to protect and limit the driving teeth 37

The planet carrier 38 is mounted in the fixed gear ring 36 and is fixed in cooperation with the first gear 321. Optionally, the first reduction gearbox further includes a third bushing 381, and the planet carrier 38 is mounted on the third bushing 381, so as to protect and limit the planet carrier 38.

A planetary gear 39 is mounted on the planetary carrier 38 and cooperates with the drive teeth 37;

the output shaft 311 outputs a first torque to the driving gear 37, and the first torque is transmitted to the first gear 321 after being decelerated by the driving gear 37, the planetary gear 39, and the carrier 38, thereby achieving a first-stage deceleration effect. The torque is then transmitted to the second gear 322 after being decelerated by the first gear 321, thereby achieving a two-stage deceleration effect. Then the torque is reduced by the second gear 322 and then converted into second torque to be transmitted to the third gear 323, so that the three-stage reduction effect is achieved. The third gear 323 transmits the second torque to the first transmission member 14 again, so as to drive the first transmission member 14 to rotate.

With the above arrangement, a primary reduction gearbox is constructed by the cooperation of the teeth of the drive teeth 37, the drive teeth 37 and the planetary gears 39. The first gear 321, the second gear 322 and the third gear 323 are matched with each other to form a second three-stage reduction gearbox. The planetary gear 39 may serve as a primary reduction gear, the first gear 321 may serve as a secondary reduction gear, the second gear 322 may serve as a tertiary reduction gear, and the third gear 323 may serve as a lead screw gear.

It will be appreciated that the first reduction gearbox is the core component of the drive mechanism, with one end being welded to the drive motor and the other end being welded to the frame 30. The first reduction gear box includes an output shaft 311 of the drive motor, a drive gear 37, a second bushing 371, a planetary gear 39, a planetary carrier 38, a third bushing 381, a stationary ring gear 36, and a first gear 321. All parts are fixed by adopting gear matching, and the output shaft 311, the driving gear 37, the second bushing 371, the planetary gear 39, the planet carrier 38, the third bushing 381 and the first gear 321 are all fixed and matched in the fixed gear ring, the driving gear 37 and the output shaft 311 of the driving motor are fixed, the planet carrier 38 and the first gear 321 are matched and fixed, the other end of the first gear 321 is fixed on the first bushing 324, and the first bushing 324 is fixed on the end cover 34 of the reduction gearbox. The second gear 322 is fixed to the frame 30 and the reduction box end cover 34 through a limit post 35. The third gear 323 is fixed on the first transmission member 14, one end of the first transmission member 14 is fixed on the frame body 30 through a bearing 141, and the other end is also fixed on the reduction box end cover 34 through the bearing 141. The end cover 34 of the reduction gearbox is fixed on the frame body 30 through a fastener 342, and three gears of the first gear 321, the second gear 322 and the third gear 323 are matched through teeth to form a two-stage reduction gearbox. The torque output by the driving motor is decelerated through the first reduction gearbox and the second reduction gearbox, and a torque which is several times or tens of times greater than the output torque is output to the screw rod to drive the screw rod to rotate. The screw rod drives the nut to move. The main function of the reduction gearbox structure is to convert low torque output by the driving motor into high torque.

In some alternative embodiments, the frame 30 may be manufactured using MIM (powder metallurgy), with the aperture and portions of the size being machined using a lathe or CNC machining center. The main function of the frame 30 is to fix components such as a reduction gearbox structure, a screw rod, a nut, a bearing, a guide rod and the like. Therefore, the precision requirement of the frame 30 is higher, the flatness requirement is also higher, and the precision of the frame 30 directly influences the stability of the whole driving mechanism. The entire frame 30 may be fixed to the first housing 91 of the center of the electronic device

The nut can adopt MIM (powder metallurgy) and plastic double-shot molding, the plastic adopts engineering plastic (POM material commonly used), the material has self-lubricating effect, one side of the nut is fixed on the guide rod, one end of the nut is fixed on the screw rod, and the screw rod guide groove is required to be designed at the screw rod end, so that the nut can be driven to linearly move. According to the structure requirement of the pushing-out assembly, the nut is designed to be fixedly connected with the side sliding piece, and the sliding piece is pushed to move. The guide rod can be made of stainless steel, has high requirement on surface roughness, and plays a role in guiding and fixing the nut. The screw is generally made of tool steel with high strength through multiple machining by a lathe or a machining center. The bearings are fixed at the two ends of the screw rod, one end of the screw rod is fixed on the frame body, the other end of the screw rod is fixed on the end cover of the reduction gearbox, the driving motor drives the screw rod to rotate through the reduction gearbox structure, and the screw rod drives the nut to linearly move. Therefore, the strength and the precision of the screw rod directly influence the stability and the smoothness of the nut pushing the sliding piece.

Referring again to fig. 22-24, the slider 22 is preloaded by the spring assembly in the home position due to the spring assembly's spring pretension and maintains the stationary state in the home position and the flexible display 90 in the retracted state due to the presence of the limit stop 25.

The driving mechanism is used as a power source and fixed on a middle frame (namely a shell) of the whole machine, and after the electronic equipment receives an instruction through the UI, the driving mechanism is controlled to drive the sliding rail mechanism to move along a first direction X (leftwards in FIG. 23), so that the whole sliding rail mechanism slides out along the direction of the first shell 91 relative to the first shell 91. In this process, the first end of the flexible display screen 90 slides along with the sliding member 22, and the rotating wheel of the rotating shaft assembly is passively rotated by the force of the flexible display screen 90, and since the second end of the flexible display screen 90 is connected with the first housing 91, the effect of gradually expanding the flexible display screen 90 can be achieved along with the gradual sliding out of the sliding rail mechanism, as shown in fig. 23. In the sliding process of the sliding rail mechanism, the sliding piece 22 can move from one end to the other end of the fixing seat 21 under the pulling of the flexible display screen, so that the unfolding length of the flexible display screen 90 can be further lengthened. In addition, in the sliding process, the elastic component is stretched by the sliding piece 22 to generate elastic pulling force opposite to the sliding direction of the sliding piece 22, and the flexible display screen 90 is always subjected to the pulling force in the opposite direction, which is equivalent to pulling the flexible display screen 90 rightwards, so that the stretched flexible display screen 90 is smoother, the curved track of the flexible display screen 90 is ensured to move according to the design intention, and the problems of screen swelling, bulging, twisting and the like caused by the fact that the whole machine slides open visually are prevented.

It will be appreciated that the slider 22 is pulled by the second end of the flexible display 90 and can move from one end of the mounting 21 to the other throughout the process. Assuming that the sliding path of the sliding rail mechanism sliding out with respect to the first housing 91 is S and the sliding path of the sliding member 22 is S, the first end of the flexible display screen 90 moves by 2S with the sliding rail mechanism with respect to the first housing 91.

When the whole machine receives an external instruction to retract. The driving motor starts to drive reversely, and the sliding rail mechanism and the flexible display screen are retracted. In the process, the support and the fixing seat are reversely moved under the driving of the driving mechanism, the flexible display screen and the sliding part are gradually retracted under the action of the elastic force of the elastic component, and the sliding part returns to the initial position under the elastic force of the elastic component, so that the flexible display screen is restored to the retracted state. Therefore, by adopting the sliding rail mechanism disclosed by the invention, the flexible display screen can be stably and effectively ensured to keep the appearance in the sliding and retraction process of the whole machine, the power loss caused by the friction force generated in the sliding and retraction process of the screen is ensured to be at a lower level, and the sliding rail mechanism has the advantages of operability and easy realization, and ensures the reliability of products.

Referring to fig. 29 to 33, in some alternative embodiments, the housing includes a first housing 91 and a second housing 92 slidably disposed on the first housing 91 along a first direction X, where the first housing 91 and the second housing 92 enclose a housing structure 991 having an opening. The first housing 91 is provided with a first sliding portion 911 provided along the first direction X. A first end 901 of the flexible display 90 is located near the bottom of the housing and a second end 902 of the flexible display 90 is connected to the first housing 91 to cover the opening. In this embodiment, the opening is located at the top of the housing. Alternatively, decorative pieces 94 may be provided on the outer sides of the first and second cases 91 and 92 for protection and decoration.

The slide rail mechanism comprises a bracket 11 connected to a first end 901 of the flexible display 90, and the bracket 11 is provided with a second sliding part 912 adapted to the first sliding part 911. Wherein the first sliding portion 911 is one of a sliding rail and a sliding groove, and the second sliding portion 912 is the other of the sliding rail and the sliding groove. The sliding rail moves along the sliding groove, so that the sliding rail mechanism drives the flexible display screen 90 to slide along the first direction X relative to the first housing 91, thereby realizing the expansion and retraction of the flexible display screen. Optionally, the first sliding portion 911 is integrally formed with the first housing of the middle frame housing, so as to facilitate production and processing. In the example shown in fig. 29 to 31, the first sliding portion 911 is a sliding groove, and the second sliding portion 912 is a sliding rail. The first housing 91 is provided with the first sliding portion 911 on both sides in a second direction (shown as a Y direction in fig. 29) perpendicular to the first direction X (shown as an X direction in fig. 29). The second sliding portions 912 are disposed on two sides of the bracket 11 along the second direction, and by providing two sets of the first sliding portions 911 and the second sliding portions 912, the sliding rail mechanism can be more stable when moving relative to the first housing 91, and the stability of the whole machine can be improved.

Referring to fig. 34, in some alternative embodiments, the sub-support 121 includes a first anchor ear seat 1211 and a second anchor ear seat 1212 spliced with the first anchor ear seat 1211, where the first anchor ear seat 1211 and the second anchor ear seat 1212 are attached to each other at two sides of the rotating shaft 122, and any one of the first anchor ear seat 1211 and the second anchor ear seat 1212 is fixedly connected to the bracket 11, and in the example shown, the second anchor ear seat 1212 is fixedly connected to the bracket 11. The sub-support 121 adopts a detachable structural form that the first hoop seat 1211 and the second hoop seat 1212 are mutually spliced, and is convenient to detach and install.

Referring to fig. 35 to 43, the electronic device of the present disclosure may further include a main control board 59 and a support assembly 60, where the main control board 59 may be connected to the driving mechanism 99 and the flexible display 90, and used as a general control end of the whole machine for controlling the driving mechanism 99 and other components. Stacked functional devices such as a battery, a main control board 59, a front camera, a rear camera 97, a headphone 98, a driving motor, a driving circuit board, and the like are assembled to the first housing 91 of the center frame assembly. The first shell 91 can be used as a middle frame shell alone, and decorative pieces 94 can be arranged on the outer sides of the first shell 91 and the second shell 92, so that protection and decoration effects are achieved.

The support assembly 60 includes a first support plate 61 supported below the flexible display screen 90 and a second support plate 62 slidably connected to the first support plate 61, the first support plate 61 is connected to the first housing 91, and the second support plate 62 is connected to the slide rail mechanism. Optionally, the second support plate 62 is coupled to the slide rail assembly 20. Alternatively, the first support plate 61 may be fixed to the first housing 91 by means of glue or glue dispensing or screw connection, and the second support plate 62 may be fixed to the slide rail assembly 20 of the slide rail mechanism by means of glue or glue dispensing or screw connection. The first end of the flexible display screen 90 may be fixed on the first support plate by means of glue or dispensing, so as to achieve a better fixing effect.

The sliding rail mechanism moves along the first direction X relative to the first housing 91, so as to drive the second housing 92, the first end of the flexible display screen 90, and the second support plate 62 to move relative to the first housing 91, so that the flexible display screen 90 is switched between an extended state and a retracted state. During deployment, the second support plate 62 slides relative to the first support plate 61 to support the portion of the flexible display screen 90 that is deployed relative to the first housing 91.

Through the arrangement, the flexible display screen 90 is supported by the supporting component 60, and the sliding rail mechanism moves to drive the flexible display screen 90 to move so as to realize the unfolding and the retraction of the flexible display screen 90. In the unfolding process, the sliding rail mechanism moves to drive the second supporting plate 62 to slide relative to the first supporting plate 61 so as to support the unfolded part of the flexible display screen 90 relative to the first shell 91, so that the flexible display screen 90 is comprehensively supported, and the product is ensured not to sag when the flexible display screen 90 is used in the unfolded state.

Referring to fig. 44, in some possible embodiments, the first support plate 61 includes a first body portion 611 and a plurality of guide grooves 612 disposed at a side portion of the first body portion 611, the first body portion 611 is connected to the first housing 91, the plurality of guide grooves 612 are disposed at intervals along a second direction perpendicular to the first direction X, and the guide grooves 612 are disposed to extend along the first direction X. The second support plate 62 includes a second main body 621 and a plurality of guide bars 622 disposed on a side portion of the second main body 621, the second main body 621 is connected with the slide rail mechanism, the plurality of guide bars 622 are disposed along the second direction at intervals, the number of the guide bars 622 is the same as that of the guide grooves 612, and the guide bars 622 are slidably disposed in the guide grooves 612 in a one-to-one correspondence. In other examples, the positions of the guide grooves and the guide bars may be interchanged, that is, the side portion of the first body 611 is provided with a plurality of guide bars, the side portion of the second body 621 is provided with a plurality of guide grooves, the guide bars are still slidably disposed in the guide grooves in a one-to-one correspondence manner, and the function of slidably disposing the second support plate 62 with respect to the first support plate 61 may be realized.

It can be appreciated that the first support plate 61 and the second support plate 62 of the support assembly 60 adopt a phase-sequence spaced support manner, which is similar to a comb or a comb tooth structure, and the second support plate 62 slides relative to the first support plate 61 to reduce the distance between the two support positions as much as possible, so that the effect of supporting the flexible display screen 90 can be better.

In some possible embodiments, as shown in fig. 45, the two sides of the opening of the guide slot 612 are provided with a limiting piece 63, and the limiting piece 63 partially protrudes from the side wall of the guide slot 612. The rail 622 includes a first portion 6221 and a second portion 6222 connected to the first portion 6221, the surface of the first portion 6221 being flush with the two limit tabs 63. The second portion 6222 is slidably disposed in the guide groove 612, and two ends of the second portion 6222 are respectively located between the bottom wall of the guide groove 612 and the protruding portion of the limiting plate 63. Alternatively, the limiting plate 63 may be fixed at the opening of the guide groove 612 by means of electric welding. The limiting piece 63 protrudes out of the side wall of the guide groove 612, so that the guide rail 622 can be limited in the guide groove 612, the guide rail 622 is prevented from being separated from the guide groove 612, and the overall stability of the support assembly is improved.

Optionally, the guide groove 612 and the two limiting pieces 63 enclose to form a stepped groove. The guide rail 622 has a stepped structure adapted to the stepped groove, and the guide rail 622 can slide in the guide groove 612 better without being separated from the guide groove 612 by adopting the stepped matching structure.

Referring to fig. 46, in some alternative embodiments, the electronic device of the present disclosure may further include a control mechanism including a displacement sensor for measuring an amount of change in displacement of the slide rail mechanism relative to the first housing 91, and a controller electrically connected to the displacement sensor. The controller is disposed in the first housing 91, and is configured to control a first stroke amount of the driving mechanism 99 to drive the slide rail mechanism to move along the first direction X according to the displacement variation. The driving mechanism 99 drives the sliding rail mechanism to move along the first direction X, so as to drive the bracket 11, the second housing 92, and the first end 901 of the flexible display screen 90 to move along the first direction X relative to the first housing 91, so that the flexible display screen 90 is switched between a retracted state and an extended state. It can be appreciated that the displacement sensor is configured to measure a displacement variation of the support 11 of the sliding rail mechanism relative to the first housing 91, and the driving mechanism 99 drives the support 11 of the sliding rail mechanism to move along the first direction X, so as to drive the support 11, the second housing 92, and the first end 901 of the flexible display screen 90 to move along the first direction X relative to the first housing 91. In this embodiment, the driving mechanisms 99 are symmetrically disposed on the first housing 91. The nuts of the two groups of driving mechanisms are used for pushing the support to move outwards or retract relative to the first shell, and the balance of pushing force is ensured by adopting the double driving mechanisms.

Through the arrangement, the displacement variable quantity of the sliding rail mechanism relative to the first shell 91 is measured through the displacement sensor, the controller can determine the first travel quantity of the sliding rail mechanism, which needs to move along the first direction X, according to the displacement variable quantity, and output a control signal to the driving mechanism, and the driving mechanism drives the sliding rail mechanism to move along the first direction X according to the control signal so as to drive the flexible display screen 90 to move, thereby achieving the purpose of accurately controlling the moving travel of the flexible display screen 90.

In some possible embodiments, the displacement sensor includes a hall magnet 71 and a plurality of hall sensors 72 electrically connected to the controller, the hall magnet 71 is provided to one of the slide rail mechanism and the first housing 91, and the plurality of hall sensors 72 are provided to the other of the slide rail mechanism and the first housing 91. In the example shown in fig. 46, the hall magnet 71 is provided in the slide rail mechanism, and the plurality of hall sensors 72 are provided in the first housing 91. The sliding rail mechanism moves relative to the first housing 91, and the plurality of hall sensors 72 obtain the displacement variation of the sliding rail mechanism relative to the first housing 91 by sensing the magnetic field variation of the hall magnets 71. Alternatively, the hall magnet 71 is provided on the bracket 11 of the slide rail mechanism.

It can be appreciated that the hall sensor 72 may be a hall chip, the control principle of the controller is that the hall chip is matched with the hall magnet, the hall magnet is fixed on the bracket 11 of the moving sliding rail mechanism, the hall magnet generates magnetic field changes, the hall chip senses magnetic fields with different intensities, generates electric signal changes and sends the electric signal changes to the controller, the controller determines the displacement change amount of the bracket of the sliding rail mechanism relative to the first shell according to the electric signal changes, namely, the moving stroke amount of the bracket of the sliding rail mechanism relative to the first shell, and calculates the first stroke amount of the bracket of the sliding rail mechanism relative to the first shell, so that the driving mechanism is controlled to drive the bracket to move the first stroke amount, thereby achieving the purpose of precisely controlling the moving stroke of the flexible display screen.

Referring to fig. 46 to 49, in some possible embodiments, the hall magnets 71 are disposed on the slide rail mechanism, and the plurality of hall sensors 72 are disposed on the first housing 91 at intervals along the first direction X. In the present embodiment, the hall magnet 71 is provided to the bracket 11 of the slide rail mechanism. The number of the hall sensors 72 is four, and the pitches of the four hall sensors 72 in the first direction X (i.e., the arrow direction in fig. 48) are X1, X2, X3, and X4, respectively, while the hall magnet 71 and the four hall sensors 72 are also kept at different pitches, respectively, which are required to satisfy the sensing ranges of the hall sensors. Through setting up the magnetic field variation of a plurality of hall sensors common induction hall magnet, can calculate the displacement variation of support relative first casing more accurately to reach the purpose of accurate control flexible display screen's removal stroke.

In some possible embodiments, the displacement sensor further includes a sensor circuit board 73 disposed on the first housing 91, and the plurality of hall sensors 72 are disposed on the sensor circuit board 73 at intervals along the first direction X. The drive mechanism includes a drive circuit board 17 electrically connected to the sensor circuit board 73. The controller includes a control circuit board electrically connected to the driving circuit board 17. Alternatively, the sensor circuit board 73 may employ an FPC flexible circuit board, reducing the occupied space. The control circuit board is electrically connected to the sensor circuit board 73 for receiving data measured by the sensor circuit board 73. Is electrically connected with the driving circuit board and is used for sending control signals to the driving circuit board.

It will be appreciated that the driving circuit board 17 is fixed on the first housing 91 of the middle frame housing, the hall chip may be attached to the sensor circuit board 73, the sensor circuit board 73 is connected and fixed with the driving circuit board 17 by using a connector, and the sensor circuit board 73 is fixed on the first housing 91, that is, the middle frame bracket. The driving circuit board 17 is connected to the control circuit board through a flexible circuit board. The hall magnet 71 is fixed on the bracket 11 through the adhesive, the bracket 11 can be provided with the accommodating groove 74, and the hall magnet 71 is embedded in the accommodating groove 74, so that the stability of the hall magnet 71 is ensured. When the driving mechanism drives the bracket 11 to move, the Hall magnet 71 moves along with the bracket, and a variable distance is generated between the Hall magnet and the Hall chip.

The bracket 11 of the slide rail mechanism is fixedly connected with the second transmission member 15 of the driving mechanism, when the driving mechanism drives the bracket 11 to slide, a variable distance is generated relative to the Hall chip, the Hall magnet arranged on the bracket 11 of the slide rail mechanism also generates a variable distance along with the movement of the bracket 11, the N/S pole of the Hall magnet forms a closed-loop magnetic field, and in the closed state of the slide rail mechanism, the Hall chip is in the range of the magnetic field, so that the Hall chip generates a signal which can position the position signal of the closed position of the slide rail mechanism. When the Hall magnet moves outwards along with the side support, the magnetic field of the Hall magnet changes, the Hall chip judges the pushed distance of the support through the change of the magnetic field, an electric signal is generated and transmitted to the controller (which can be understood as a terminal product CPU), the controller sends a control signal to the driving circuit board according to the signal, and the driving motor is driven to rotate or stop, so that the travel of the nut moving relative to the screw rod is controlled, the travel of the support sliding is controlled, and the purpose of accurately controlling the travel of the flexible display screen is achieved.

In some possible embodiments, the controller is further electrically connected to the flexible display screen 90, and is further configured to determine a second amount of travel of the flexible display screen 90 for expanding or retracting according to a first amount of travel of the sliding rail mechanism along the first direction X, and control a display size of the flexible display screen 90 according to the second amount of travel. It can be understood that the controller receives and senses the signal change of the hall chip, and controls the display size of the flexible display screen 90 according to the first stroke amount of the sliding rail mechanism moving along the first direction X and the second stroke amount, so as to control the display change of the flexible display screen 90, realize the effect of sliding and displaying the screen, control the display proportion of any stroke, and ensure the display performance of the screen.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. This disclosure is intended to cover any adaptations, uses, or adaptations of the disclosure following the general principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It is to be understood that the present disclosure is not limited to the precise arrangements and instrumentalities shown in the drawings, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

A telescoping screen structure, comprising:

the flexible display screen is provided with a first magnetic component;

the support assembly is supported below the flexible display screen and comprises a first support plate and a second support plate, and the second support plate is connected with the flexible display screen and is in sliding connection with the first support plate; at least one of the first support plate and the second support plate is provided with a second magnetic component which is in magnetic attraction fit with the first magnetic component;

The flexible display screen structure comprises an unfolding state and a retraction state, when the flexible display screen structure is switched between the unfolding state and the retraction state, the second support plate slides relative to the first support plate along a direction away from or close to the first support plate, the flexible display screen and the second support plate synchronously move, and the second support plate is used for supporting the unfolded part of the flexible display screen relative to the first support plate.
The telescoping shield structure of claim 1, wherein the first magnetic assembly comprises:

the first metal piece is connected to one side of the flexible display screen, which is close to the supporting component;

and the second metal piece is connected with the first metal piece.
The structure of the retractable screen according to claim 2, wherein the flexible display screen includes a body portion and a bending portion connected to the body portion; the first metal piece is not magnetic and is connected to one side of the body part and one side of the bending part, which is close to the supporting component; the second metal piece is magnetic and is connected to the part of the first metal piece located in the area where the bending part is located.
A telescoping shield structure according to claim 2 or 3, wherein the first metal member comprises a mesh sheet metal; and/or

The second metal piece comprises a strip-shaped metal sheet.
The structure of claim 2, wherein the first support plate includes a first body portion and a plurality of first guide portions disposed at a side portion of the first body portion, the first guide portions extending in a first direction, the plurality of first guide portions being disposed at intervals in a second direction perpendicular to the first direction;

the second support plate comprises a second main body part and a plurality of second guide parts which are in sliding fit with the first guide parts, the second guide parts are arranged on the side parts of the second main body part, the second guide parts extend along the first direction, and the second guide parts are arranged at intervals along the second direction.
The telescoping shield structure of claim 5, wherein the second magnetic assembly comprises at least one magnetic attraction member, at least one of the second body portion and the second guide portion being provided with a recess portion, the magnetic attraction member being disposed within the recess portion.
The structure of claim 6, wherein the second body portion is provided with a first groove portion extending in the first direction; and/or

At least one second guiding part is provided with a second groove part, and the second groove part extends along the second direction.
The telescoping shield structure of claim 7, wherein the magnetic attraction member is a plurality of;

the second main body part is provided with at least two first groove parts which are arranged at intervals along the second direction; or (b)

At least one second guiding part is provided with at least two second groove parts which are arranged at intervals along the first direction; or (b)

The second main body part is provided with at least two first groove parts which are arranged at intervals along the second direction, and the at least one second guiding part is provided with at least two second groove parts which are arranged at intervals along the first direction.
The telescoping shield structure of claim 5, wherein the first guide comprises one of a guide slot and a guide rail that are mutually adapted, and the second guide comprises the other of a guide slot and a guide rail that are mutually adapted.
An electronic device comprising a telescoping screen structure as claimed in any one of claims 1 to 9.
The electronic device of claim 10, wherein the electronic device comprises:

The shell comprises a first shell and a second shell, and the first shell and the second shell are enclosed to form a containing structure with an opening;

the sliding rail mechanism is arranged in the accommodating structure and connected with the second shell, and the sliding rail mechanism is connected with the first shell in a sliding manner along a first direction;

the rotating shaft assembly is arranged at one end, far away from the first shell, of the second shell and comprises a track part; the thickness of the track part along a third direction perpendicular to the first direction gradually decreases from one end close to the first shell to one end far away from the first shell along the first direction;

the flexible display screen is wound on the track portion, a first end of the flexible display screen is connected with the sliding rail mechanism, and a second end of the flexible display screen is connected with the first shell and covers the opening.
The electronic device of claim 11, wherein the track portion includes a track surface, the flexible display screen is wound around the track surface, and an end surface of the track surface away from the first housing is an arc surface.
The electronic device of claim 12, wherein the track portion comprises a track body and a runner, the track body forming a receiving cavity, the runner being movably disposed within the receiving cavity;

The flexible display screen is wound on the track body and part of the rotating wheel, and the outer contour surface of the track body and part of the outer contour surface of the rotating wheel jointly form the track surface.
The electronic device of claim 12, wherein the track is elliptical in shape.