阅读说明：本技术 折叠机构、折叠屏及移动终端 (Folding mechanism, folding screen and mobile terminal ) 是由 贾玉虎 于 2020-04-29 设计创作，主要内容包括：本申请提供了一种折叠机构、折叠屏及移动终端,包括多个叠片、若干导向件和若干对弹性伸缩组件,各导向件的圆心轴位于对应两个叠片正面之间对应的区域。本申请提供的折叠机构,通过设置引导相邻两个叠片沿弧形弯曲滑动的导向件,在各叠片的侧面开设供导向件相应端部滑动插入的滑道,以便多个叠片沿弧形弯曲；设置弹性推顶相邻两个叠片相互远离的若干对弹性伸缩组件,以方便多个叠片的折弯；相邻两个叠片折弯的轴线为该导向件的圆心轴,而各导向件的圆心轴位于对应两个叠片正面之间对应的区域,则相邻两个叠片折弯的轴线靠近该两个正面之间对应位置,则当各叠片正面支撑柔性屏时,可以减少柔性屏的拉伸与收缩变形,以更好的保护柔性屏。(The application provides a folding mechanism, folding screen and mobile terminal, including a plurality of laminations, a plurality of guide and a plurality of to the flexible subassembly that stretches out and draws back, the circle mandrel of each guide is located the region that corresponds between two corresponding lamination fronts. According to the folding mechanism provided by the application, the guide pieces for guiding the adjacent two laminated sheets to bend and slide along the arc are arranged, and the side surface of each laminated sheet is provided with a slide way for the corresponding end part of each guide piece to slide and insert, so that the plurality of laminated sheets are bent along the arc; a plurality of pairs of elastic telescopic assemblies which elastically push two adjacent laminated sheets away from each other are arranged to facilitate bending of the plurality of laminated sheets; the axis that two adjacent lamination are bent is the circle mandrel of this guide, and the circle mandrel of each guide is located the region that corresponds between two corresponding lamination fronts, and then the axis that two adjacent lamination are bent is close to corresponding position between these two fronts, then when each lamination front supported the flexible screen, can reduce the tensile and shrink deformation of flexible screen to better protection flexible screen.)

1. Folding mechanism, its characterized in that: the elastic telescopic assembly comprises a plurality of laminations, a plurality of guide pieces and a plurality of pairs of elastic telescopic assemblies, wherein the guide pieces are respectively used for guiding two adjacent laminations to bend and slide along an arc line, the elastic telescopic assemblies respectively push the two adjacent laminations to be away from each other, the two elastic telescopic assemblies in each pair of elastic telescopic assemblies are respectively arranged in the two adjacent laminations, the two elastic telescopic assemblies in each pair of elastic telescopic assemblies are oppositely abutted, the side surface of each lamination is provided with an accommodating cavity for placing the corresponding elastic telescopic assembly, each guide piece is arc-shaped, the side surface of each lamination is provided with a slideway for guiding the end part of the corresponding guide piece to be inserted in a sliding manner, each slideway is arranged in an arc-shaped extending manner, and two ends of each guide piece are respectively inserted into the corresponding two slideways; the round mandrel of each guide piece is positioned between two corresponding lamination sheets, and the round mandrel of each guide piece is positioned on one side of the front faces of the two corresponding lamination sheets.

2. The folding mechanism of claim 1 wherein respective two of said laminations are held flat against their front faces: the corresponding radian between the inner ends of two adjacent slide ways on the two laminated sheets is larger than the bending radian of the guide piece.

3. The folding mechanism of claim 2, wherein: the width of the front side of each lamination is greater than the width of the back side of the lamination.

4. The folding mechanism of claim 1, wherein: two ends of each guide piece are respectively convexly provided with a limiting protrusion, and the outer side end of each slideway is inwards convexly provided with a blocking protrusion for blocking the limiting protrusions.

5. The folding mechanism of claim 1, wherein: and a pair of magnetic attraction pieces which are magnetically attracted with each other are respectively arranged on the two end surfaces of each pair of the elastic telescopic components which are close to each other.

6. The folding mechanism of any of claims 1-5, wherein: each elastic telescopic assembly comprises a sliding block which is arranged in the corresponding accommodating cavity in a sliding mode and a spring which pushes the sliding block outwards and elastically, and two ends of the spring respectively push against the bottom surface of the accommodating cavity and the inner side end face of the sliding block.

7. The folding mechanism of claim 6, wherein: an arc-shaped transition surface is arranged between the lower surface of each slide block and the outer side end surface of the slide block.

8. The folding mechanism of claim 6, wherein: the outer end of the side surface of each sliding block is convexly provided with a positioning clamping protrusion, the opening part of the containing cavity is convexly provided with a positioning convex rib matched and positioned with the positioning protrusion, and the pushing force of each spring is greater than the clamping force of the positioning clamping protrusion and the corresponding positioning convex rib.

9. The folding mechanism of claim 8, wherein: the inner side surface of each positioning convex rib is in an inclined plane shape, and the outer side surface of each positioning clamping convex rib is an inclined plane matched with the inner side surface of each positioning convex rib.

10. The folding mechanism of claim 8, wherein: the outer side surface of each positioning convex rib is an arc surface, or/and the inner side surface of each positioning clamping convex rib is an arc surface.

11. The folding mechanism of claim 8, wherein: the inner side end of the side surface of each sliding block is convexly provided with an anti-falling projection which is matched with the corresponding positioning convex rib to prevent the sliding block from falling off, and a sliding groove for the positioning convex rib to slide in is formed between the anti-falling projection and the corresponding positioning clamping projection.

12. The folding mechanism of claim 8, wherein: and a deformation cavity for the positioning convex rib to elastically deform towards the direction away from the middle part of the corresponding accommodating cavity is formed in the position, adjacent to the positioning convex rib, of each lamination.

13. The folding mechanism of claim 8, wherein: and a buffer cavity for the positioning clamping protrusion to elastically deform towards the middle direction of the sliding block is formed in the position, adjacent to the positioning clamping protrusion, of each sliding block.

14. The folding mechanism of any of claims 1-5, wherein: the folding mechanism further comprises an elastic buffer layer, and the front surface of each lamination is connected with the elastic buffer layer.

15. The folding mechanism of any of claims 1-5, wherein: the folding mechanism also comprises elastic pieces which are respectively arranged on the front surfaces of two adjacent laminations, and the side edge of each lamination front surface is provided with an accommodating groove; in two adjacent said laminations: one end of the elastic sheet is fixed in the containing groove of one lamination, the other end of the elastic sheet is arranged in the containing groove of the other lamination in a sliding way, and the containing groove of the other lamination is provided with a vacant section which is separated from the other end of the elastic sheet when the front faces of the two laminations are kept flat.

16. The folding mechanism of any of claims 1-5, wherein: the back of each lamination is provided with a slot.

17. Folding screen, including flexible screen, its characterized in that: a folding mechanism as claimed in any one of claims 1 to 16, the rear face of the flexible screen being supported on the front face of each lamination.

18. A folding screen as recited in claim 17, wherein: the circular mandrel of each guide member is located at a middle position in the thickness direction of the flexible panel.

19. Mobile terminal, including folding organism, its characterized in that: the mobile terminal further comprises a folding screen according to any one of claims 17-18, the folding screen being mounted on the body.

20. The mobile terminal of claim 19, wherein: the machine body is provided with a locking component which is matched with the two ends of the machine body to be locked and connected when the machine body is folded.

Technical Field

The application belongs to the field of folding mechanisms, and particularly relates to a folding mechanism, a folding screen and a mobile terminal.

Background

A flexible screen, also called a flexible screen, has been developed in recent years as an important application technology of an OLED (Organic Light-Emitting semiconductor). The flexible screen has the characteristic of being bendable, and the application scenes of the flexible screen are more and more extensive. Some mass-produced folding mobile terminals such as folding mobile phones based on flexible screens appear in the market, and the current folding mobile terminals are divided into two schemes of folding the flexible screens inwards and folding the flexible screens outwards. Which typically use hinges to support the flexible screen in order to bend the flexible screen. However, the flexible screen is supported on the surface of the hinge, when the hinge is bent, the hinge rotates around the connecting shaft of the hinge, so that the surface of the hinge has large telescopic deformation, and the flexible screen is easy to damage when in use.

Disclosure of Invention

An object of the embodiment of the application is to provide a folding mechanism, a folding screen and a mobile terminal, so that the problem that the flexible screen is easy to damage due to the fact that the flexible screen generates large telescopic deformation when a hinge used by the folding screen in the prior art is used is solved.

In order to achieve the above purpose, the embodiment of the present application adopts the following technical solutions: providing a folding mechanism, comprising a plurality of laminations, a plurality of guide pieces respectively used for guiding two adjacent laminations to bend and slide along an arc line and a plurality of pairs of elastic telescopic assemblies respectively used for elastically pushing two adjacent laminations to be away from each other, wherein two elastic telescopic assemblies in each pair of elastic telescopic assemblies are respectively arranged in two adjacent laminations, the two elastic telescopic assemblies of each pair of elastic telescopic assemblies are oppositely abutted, the side surface of each lamination is provided with an accommodating cavity for placing the corresponding elastic telescopic assembly, each guide piece is arc-shaped, the side surface of each lamination is provided with a slideway for guiding the end part of the corresponding guide piece to be inserted in a sliding way, each slideway is arranged in an arc-shaped extension way, two ends of each guide piece are respectively inserted into the corresponding two slideways, and the round spindle of each guide piece is positioned between the two corresponding laminations, and the round mandrel of each guide piece is positioned on one side of the front faces of the corresponding two laminated sheets.

In one embodiment, the respective two said laminations face flat: the corresponding radian between the inner ends of two adjacent slide ways on the two laminated sheets is larger than the bending radian of the guide piece.

In one embodiment, the width of the front side of each lamination is greater than the width of the back side of the lamination.

In one embodiment, two ends of each guide member are respectively provided with a limiting protrusion in a protruding manner, and the outer side end of each slideway is provided with a stopping protrusion which stops the limiting protrusions in an inward protruding manner.

In one embodiment, a pair of magnetic attraction pieces magnetically attracting each other are respectively arranged on two end faces of each pair of the elastic telescopic components, which are close to each other.

In one embodiment, each elastic telescopic assembly comprises a sliding block which is slidably arranged in the corresponding accommodating cavity and a spring which elastically pushes the sliding block outwards, and two ends of the spring respectively abut against the bottom surface of the accommodating cavity and the inner side end surface of the sliding block.

In one embodiment, the lower surface of each slider and the outer side end surface of the slider are provided with arc-shaped transition surfaces.

In one embodiment, a positioning protrusion is protruded from an outer side of a side surface of each of the sliders, a positioning rib is protruded from an opening of the receiving cavity to be positioned in cooperation with the positioning protrusion, and an ejecting force of each of the springs is greater than a holding force of the positioning protrusion and the corresponding positioning rib.

In one embodiment, the inner side surface of each positioning convex rib is in an inclined surface shape, and the outer side surface of each positioning clamping convex rib is in an inclined surface matched with the inner side surface of each positioning convex rib.

In one embodiment, the outer side surface of each positioning convex rib is a circular arc surface, or/and the inner side surface of each positioning convex rib is a circular arc surface.

In one embodiment, an inner side end of each of the side surfaces of the slider is convexly provided with an anti-falling protrusion which is matched with the corresponding positioning convex rib to prevent the slider from falling off, and a sliding groove for the positioning convex rib to slide in is formed between the anti-falling protrusion and the corresponding positioning clamping protrusion.

In one embodiment, a position, adjacent to the positioning rib, of each lamination is provided with a deformation cavity for the positioning rib to elastically deform towards a direction away from the middle of the corresponding accommodating cavity.

In one embodiment, a buffer cavity for elastically deforming the positioning clamping protrusion towards the middle of the slider is formed in the position, adjacent to the positioning clamping protrusion, of each slider.

In one embodiment, the folding mechanism further comprises an elastomeric cushioning layer, the front face of each of the laminations being attached to the elastomeric cushioning layer.

In one embodiment, the folding mechanism further comprises elastic pieces respectively arranged on the front faces of two adjacent lamination sheets, and an accommodating groove is formed in the side edge of each front face of the lamination sheet; in two adjacent said laminations: one end of the elastic sheet is fixed in the containing groove of one lamination, the other end of the elastic sheet is arranged in the containing groove of the other lamination in a sliding way, and the containing groove of the other lamination is provided with a vacant section which is separated from the other end of the elastic sheet when the front faces of the two laminations are kept flat.

In one embodiment, the back surface of each lamination is provided with a slot.

It is a further object of an embodiment of the present application to provide a folding screen comprising a flexible screen and a folding mechanism as in any of the above embodiments, the flexible screen having a back surface supported on a front surface of each of the laminations.

In one embodiment, the circular axis of each guide member is located at an intermediate position in the thickness direction of the flexible panel.

Another object of an embodiment of the present application is to provide a mobile terminal, which includes a foldable body and a foldable screen as in any of the above embodiments, wherein the foldable screen is mounted on the body.

In one embodiment, the machine body is provided with a locking component which is matched with the two ends of the machine body to be locked and connected when the machine body is folded.

One or more technical solutions in the embodiments of the present application have at least one of the following technical effects:

according to the folding mechanism provided by the embodiment of the application, the guide pieces for guiding the adjacent two laminated sheets to bend and slide along the arc are arranged, and the side surface of each laminated sheet is provided with the slide ways for the corresponding end parts of the guide pieces to slide and insert, so that the plurality of laminated sheets are bent along the arc; a plurality of pairs of elastic telescopic assemblies which elastically push two adjacent laminated sheets away from each other are arranged to facilitate bending of the plurality of laminated sheets; the axis that two adjacent lamination are bent is the circle mandrel of this guide, and the circle mandrel of each guide is located two corresponding lamination fronts one side to the circle mandrel of each guide is located between two corresponding laminations, and then the axis that two adjacent lamination are bent is close to corresponding position between these two fronts, then when each lamination front supported the flexible screen, can reduce the tensile and shrink deformation of flexible screen to better protection flexible screen.

The folding screen of this application embodiment has used the folding mechanism of above-mentioned embodiment, and when folding, the axis that two adjacent laminations were bent is close to the flexible screen, can reduce the tensile and shrink deformation of flexible screen to the flexible screen of better protection guarantees the life-span of flexible screen.

The mobile terminal of the embodiment of the application uses the folding screen of the embodiment, and when the folding screen is folded, stretching and contraction deformation of the flexible screen can be reduced, so that the flexible screen is better protected, and the service life of the flexible screen is ensured.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or exemplary technical descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a mobile terminal provided in an embodiment of the present application when the mobile terminal is unfolded.

Fig. 2 is a schematic structural diagram of a mobile terminal according to an embodiment of the present application when folded inward.

Fig. 3 is a schematic structural diagram of a mobile terminal provided in the embodiment of the present application when folded outward.

Fig. 4 is a partial structural schematic view of a first folding mechanism provided in an embodiment of the present application when the folding mechanism is unfolded.

Fig. 5 is a partial schematic structural view of the first folding mechanism according to an embodiment of the present disclosure when folded inward.

Fig. 6 is a partial structural schematic view of the first folding mechanism according to the embodiment of the present application when being folded outwards.

Fig. 7 is a schematic structural diagram of a first lamination provided in an embodiment of the present application.

Fig. 8 is a schematic cross-sectional view of the laminate of fig. 7.

Fig. 9 is a schematic structural diagram of a first slider according to an embodiment of the present application.

Fig. 10 is a side view of the slider of fig. 9.

Fig. 11 is a schematic structural diagram of a guide member according to an embodiment of the present application.

Fig. 12 is a schematic cross-sectional view of a second lamination provided in the embodiments of the present application.

Fig. 13 is a schematic structural diagram of a second slider according to an embodiment of the present application.

Fig. 14 is a schematic structural diagram of a third lamination provided in the embodiments of the present application.

Fig. 15 is a partial schematic structural view of a fourth lamination provided in the embodiments of the present application.

Fig. 16 is a partial structural view of a fifth lamination provided in the embodiments of the present application.

Fig. 17 is a partial structural view of a sixth lamination provided in the embodiments of the present application.

Fig. 18 is a partial structural view illustrating the second folding mechanism according to an embodiment of the present application when it is unfolded.

Wherein, in the drawings, the reference numerals are mainly as follows:

100-a mobile terminal;

10-folding screen; 101-a flexible screen; 11-body; 12-a locking assembly; 121-a magnetic member;

20-a folding mechanism;

30-lamination; 31-an accommodating cavity; 32-locating ribs; 33-a slide; 331-blocking convex; 34-a deformation chamber; 35-a receiving groove; 351-empty segment; 36-slotting;

40-a guide; 41-limit protrusion; 401-round mandrel;

50-an elastic telescopic component; 51-a spring; 52-a slide block; 523-side surface; 5231-lower surface; 5232-upper surface; 524-transition surface; 525-positioning the clamping convex; 526-anti-dropping convex; 527-chute; 528-a buffer chamber; 53-magnetic attraction;

60-an elastic buffer layer; 70-elastic sheet.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise. The meaning of "a number" is one or more unless specifically limited otherwise.

Reference throughout this specification to "one embodiment," "some embodiments," or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the present application. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," or the like, in various places throughout this specification are not necessarily all referring to the same embodiment, but rather "one or more but not all embodiments" unless specifically stated otherwise. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

Referring to fig. 8, for convenience of description, the following are defined: the width of the lamination 30 is between two sides of the lamination 30, the thickness of the lamination 30 is between the front surface 301 and the back surface 302 of the lamination 30, the length of the lamination 30 is between two ends of the lamination 30, that is, two ends of the lamination 30 in the length direction are two ends of the lamination 30, two ends of the lamination 30 in the width direction are two sides of the lamination 30, and two sides of the lamination 30 in the thickness direction are two sides of the lamination 30. Defining: the bottom of the slide 33 in the extending direction is the inner end of the slide 33, and the mouth of the slide 33 is the outer end of the slide 33. Defining: the bottom surface of the accommodating cavity 31 is the bottom surface of the depth of the accommodating cavity 31, one side of the accommodating cavity 31 close to the bottom along the depth direction is the inner side of the accommodating cavity, and one side close to the mouth is the outer side of the accommodating cavity. Referring to fig. 5 and 11, the following are defined: the both sides end of guide 40 is the both sides end that guide 40 bends into the arc respectively, guide 40 is the both sides end of this guide 40 along the length direction of lamination 30 promptly, guide 40 is the both ends of this guide 40 along the both ends of lamination 30 length direction, guide 40 bends into the arc, this arc corresponds the centre of a circle axle 401 of centre of a circle line for this guide 40, guide 40 is the both sides of this guide 40 along its radial both sides that bend into the arc, the one side that is close to its centre of a circle axle 401 on the guide 40 is the medial surface of this guide, the one side that deviates from the medial surface on the guide 40 is the lateral surface of this guide. In addition, referring to fig. 9 and 10, the following are defined: the sliding block 52 has a side surface 523, the side surface 523 includes an upper surface 5232 and a lower surface 5231, wherein one surface of the sliding block 52 close to the front surface of the corresponding lamination 30 is the upper surface 5232 of the sliding block, one surface of the sliding block 52 away from the upper surface 5232 of the sliding block is the lower surface 5231 of the sliding block, two ends of the sliding block 52 along the length direction of the lamination 30 are two end surfaces of the sliding block 52, that is, the upper surface 5232 and the lower surface 5231 of the sliding block 52 are collectively called as the side surface 523 of the sliding block 52, one surface of the sliding block 52 close to the bottom in the depth direction of the corresponding accommodating cavity 31 is an inner side surface 522, one surface of the sliding block 52 away from the inner side surface 522 is an outer side surface 521, and one end.

Referring to fig. 4-6, the folding mechanism 20 provided herein will now be described. The folding mechanism 20 includes a plurality of laminates 30, a plurality of guides 40, and a plurality of pairs of resilient retraction assemblies 50. At least one guide 40 is disposed between two adjacent laminations 30, and each guide 40 is used for guiding the corresponding two adjacent laminations 30 to slide along the arc-shaped bend so as to guide the corresponding two laminations 30 to move in a bending manner. Each pair of elastic telescopic assemblies 50 is respectively installed in two adjacent laminates 30, namely one of the two elastic telescopic assemblies in each pair of elastic telescopic assemblies 50 is installed in one laminate 30, and the other elastic telescopic assembly is installed in the other adjacent laminate 30; and the two elastic telescopic assemblies of each pair of elastic telescopic assemblies 50 are oppositely abutted and arranged so as to elastically push the two adjacent laminated sheets 30 to be away from each other, thereby facilitating the pushing of the bending movement between the two corresponding adjacent laminated sheets 30. The side of each lamination 30 is opened with a receiving cavity 31 for the corresponding elastic expansion assembly 50 to be inserted, thereby facilitating the installation and fixation of the elastic expansion assembly 50. Each guide 40 is arc-shaped, that is, the cross section of each guide 40 along the width direction of the lamination 30 is arc-shaped, the side surface of each lamination 30 is provided with a slide way 33, each slide way 33 extends in arc shape, two ends of each guide 40 are respectively inserted into two adjacent slide ways 33, so that the slide ways 33 guide the end parts of the corresponding guide 40 to slide, and when the end parts of the guide 40 slide in the corresponding slide ways 33, the corresponding two adjacent laminations 30 are guided to bend and move by taking the round spindle 401 of the guide 40 as the axis, and then the plurality of laminations 30 can be folded. The circular mandrel 401 of each guide 40 is located in the corresponding region between the front faces of the corresponding two laminations 30, i.e. the circular mandrel 401 of each guide 40 is located between the corresponding two laminations 30 and the circular mandrel 401 of each guide 40 is located on the side of the front face of the corresponding two laminations 30, then in use, when the front face 301 of each lamination 30 supports the flexible screen 101, the stretching and shrinking deformations of the flexible screen 101 can be reduced, so as to better support and protect the flexible screen 101.

Referring to fig. 1 and 4, when the front surfaces 301 of two adjacent laminated sheets 30 are kept flat, each corresponding pair of elastic telescopic assemblies 50 is oppositely abutted to position the two laminated sheets 30, so that the two laminated sheets 30 keep the front surfaces 301 of the laminated sheets 30 flat, and further, when in use, the folding mechanism 20 can be flattened to support the flexible screen 101, which is convenient to operate and use.

In the folding mechanism 20 of the embodiment of the application, the guide 40 for guiding the adjacent two laminations 30 to slide along the arc-shaped bend is arranged, and the side surface of each lamination 30 is provided with the slide way 33 for the corresponding end part of the guide 40 to slide and insert, so that the plurality of laminations 30 bend along the arc-shaped bend; a plurality of pairs of elastic telescopic assemblies 50 which elastically push two adjacent lamination sheets 30 away from each other are arranged to facilitate bending of the plurality of lamination sheets 30; the bending axes of two adjacent laminations 30 are the circular mandrels 401 of the guide members 40, and the circular mandrel 401 of each guide member 40 is located in the corresponding area between the front faces 301 of the two corresponding laminations 30, so that the bending axes of two adjacent laminations 30 are close to the corresponding position between the two front faces 301, and when the front faces 301 of the respective laminations 30 support the flexible screen 101, the stretching and shrinking deformation of the flexible screen 101 can be reduced, so as to better protect the flexible screen 101.

Referring to fig. 2 and 5, when the folding mechanism 20 of the present embodiment is bent inward, that is, when the folding mechanism is bent toward the front 301 of each lamination 30, two ends of each guide 40 slide outward from the corresponding two slide rails 33, a certain included angle is formed between the front 301 of two adjacent laminations 30, and the front 301 of each lamination 30 has a certain length, so that when each lamination 30 supports the flexible screen 101, the flexible screen 101 is prevented from being bent at a large angle, and the shrinkage deformation of the flexible screen 101 is reduced, so as to protect the flexible screen 101. When the two ends of the flexible screen 101 are folded close to each other, the angle of the inward bending of the folding mechanism 20 is greater than 180 degrees.

In some embodiments, each guide 40 is bent at an obtuse angle, so that when two adjacent laminations 30 are bent toward the front surface 301, the included angle between the front surfaces 301 of the two adjacent laminations 30 is also obtuse, so as to avoid bending the flexible screen 101 at a larger angle, thereby protecting the flexible screen 101.

In one embodiment, referring to fig. 4 to 6, the corresponding curvature between the inner ends of two adjacent upper runners 33 is greater than the curvature of the guiding element 40 when the front sides 301 of two corresponding laminates 30 are flat; namely in the respective two laminations 30: when the front faces 301 of the two laminated sheets 30 are flat, the corresponding curvature between the inner ends of the two adjacent upper runners 33 is larger than the curvature of the guide member 40. As the two ends of each guide 40 continue to move toward the bottom of the corresponding slide 33, the corresponding two laminations 30 can be folded and bent toward the back surface 302 side, i.e., outward bending is achieved, and thus outward bending of the folding mechanism 20 is achieved. In addition, the angle at which two adjacent laminations 30 are bent toward the back face 302 side can be defined by the depth of each runner 33.

Referring to fig. 3 and 6, after the front 301 of each lamination 30 of the folding mechanism 20 supports the flexible screen 101, the folding mechanism 20 is folded outward, the front 301 of each lamination 30 supports the flexible screen 101, and the depth of each slide rail 33 can limit the bending angle of two adjacent laminations 30 to the back 302 side, thereby preventing the flexible screen 101 from being bent at a larger angle, and reducing the stretching deformation of the flexible screen 101 to protect the flexible screen 101. When the two ends of the flexible screen 101 are folded close to each other, the angle of the outward bending of the folding mechanism 20 may be greater than or equal to 180 degrees, so as to fold the flexible screen 101.

In one embodiment, referring to fig. 4, 7 and 8, the width of the front surface 301 of each lamination 30 is greater than the width of the back surface 302 of each lamination 30, so that when two adjacent laminations 30 are bent toward the back surface 302, the side surfaces of the two adjacent laminations 30 can define the angle at which the two laminations 30 are bent toward the back surface 302 to provide a good limiting function, and when the side surfaces of the two adjacent laminations 30 are in contact, a good supporting function can be provided. In one embodiment, each lamination 30 is trapezoidal in cross-section.

In one embodiment, referring to fig. 8 and 11, each guide 40 has two ends respectively provided with a limiting protrusion 41, the outer end of each slideway 33 is provided with a stopping protrusion 331 protruding inwards, when the end of the guide 40 slides outwards in the corresponding slideway 33, the limiting protrusion 41 can be stopped by the stopping protrusion 331 in the slideway 33 to prevent the end of the guide 40 from sliding out of the corresponding slideway 33, and the angle of bending of two adjacent laminations 30 to the front surface 301 side can be limited.

In one embodiment, referring to fig. 5 to 6, each elastic expansion element 50 includes a spring 51 and a slider 52, the slider 52 is slidably disposed in the corresponding accommodating cavity 31, and two ends of the spring 51 respectively abut against a bottom surface of the accommodating cavity 31 and an inner end surface 522 of the slider 52, so as to elastically push the slider 52 outward of the accommodating cavity 31. The elastic telescopic assembly 50 has a simple structure, is convenient to assemble, and can be made small in size. In other embodiments, the elastic expansion assembly 50 may also be an elastic expansion rod.

In one embodiment, a pair of magnetic attraction members 53 magnetically attracting each other are respectively disposed on two end surfaces of each pair of elastic telescopic assemblies 50, two adjacent lamination sheets 30 are positioned on the front surface 301 in a flat position, and each pair of magnetic attraction members 53 are magnetically attracted to each other for positioning the folding mechanism 20 in a flat state. Each pair of magnetic attracting elements 53 may be a magnet and an iron body, or two magnets with similar magnetism.

In one embodiment, referring to fig. 4, 9 and 10, a magnetic member 53 is disposed in each of the sliding blocks 52 adjacent to the outer end surface, so that when the two opposite sliding blocks 52 are close to each other, the two corresponding magnetic members 53 can magnetically attract each other to perform a positioning function, so as to position the two adjacent stacked sheets 30 at the flat position of the front surface 301, and further position the folding mechanism 20 in the flat state. When the elastic telescopic assembly 50 is an elastic telescopic rod, a pair of magnetic attraction pieces 53 may be disposed at the end of each pair of elastic telescopic rods.

In one embodiment, the outer side end surface 521 of each slide block 52 is planar, so that when the folding mechanism 20 is unfolded, the outer side end surfaces 521 of two adjacent slide blocks 52 can be better abutted and positioned.

In one embodiment, referring to fig. 9 and 10, the lower surface 5231 of each slider 52 and the outer end surface 521 of the slider 52 have an arcuate transition surface 524 therebetween. Referring to fig. 4 and 6, when two adjacent laminations 30 are bent toward the back surface 302, each sliding block 52 slides into the corresponding accommodating cavity 31, and the transition surfaces 524 of the two adjacent sliding blocks 52 can cooperate with each other to perform a guiding transition function, so that the sliding blocks 52 slide into the corresponding accommodating cavities 31, and further, the two adjacent laminations 30 are bent toward the back surface 302, and a certain damping function can be provided during bending to position the bending angle of the laminations 30.

In one embodiment, referring to fig. 8 to 10, the outer end of the side surface 523 of each slider 52 is protruded with a positioning protrusion 525, the mouth of each receiving cavity 31 is protruded with a positioning rib 32, and the pushing force of each spring 51 is greater than the holding force of the positioning protrusion 525 and the corresponding positioning rib 32. Referring to fig. 4 and 6, when two laminated sheets 30 are bent from the folded state to the unfolded state, each spring 51 can push the outer end of the corresponding slider 52 out of the accommodating cavity 31, and make the positioning protrusion 525 slide out of the corresponding positioning rib 32, so that when in use, for example, when the front surface 301 of the laminated sheet 30 is pressed, the positioning rib 32 can abut against the corresponding positioning protrusion 525 to play a supporting role, so that the front surfaces 301 of two adjacent laminated sheets 30 can be better kept in the flat state, and the folding mechanism 20 is kept in the unfolded state.

In one embodiment, referring to fig. 8 to 10, the outer side 321 of each positioning rib 32 is a circular arc surface, which can reduce the clamping force between the positioning rib 32 and the corresponding positioning rib 525, so as to facilitate pushing the sliding block 52 into the corresponding sliding channel 33 when bending two adjacent laminations 30 toward the back surface 302. In one embodiment, the inner surface 5251 of each detent protrusion 525 may be rounded or curved. In other embodiments, the outer side 321 of each positioning rib 32 and the inner side 5251 of each positioning protrusion 525 may be formed as circular arcs.

In one embodiment, referring to fig. 6, 8 to 10, the inner side 322 of each positioning protruding rib 32 is inclined, and the outer side 5252 of the positioning protruding rib 525 is inclined to match the inner side 322 of the positioning protruding rib 32, so as to reduce the supporting force of the inner side 322 of the positioning protruding rib 32 against the outer side 5252 of the corresponding positioning protruding rib 525, thereby facilitating the spring 51 to push the sliding block 52 out of the corresponding accommodating cavity 31.

In one embodiment, referring to fig. 8-10, the inner side of the side surface 523 of each slider 52 is provided with a retaining protrusion 526. Referring to fig. 5, when the sliding block 52 slides outwards from the corresponding accommodating cavity 31, the positioning rib 32 can abut against the corresponding anti-slip protrusion 526 to prevent the sliding block 52 from falling off from the corresponding accommodating cavity 31. A sliding groove 527 for the positioning rib 32 to slide in is formed between the anti-slip projection 526 and the corresponding positioning clip projection 525. Referring to fig. 6, when the sliding block 52 slides towards the inside of the accommodating cavity 31, the positioning rib 32 can be located in the sliding slot 527, so that the sliding block 52 slides towards the accommodating cavity 31.

In one embodiment, referring to fig. 4, the folding mechanism 20 further includes an elastomeric cushioning layer 60, and a front surface 301 of each lamination stack 30 is attached to the elastomeric cushioning layer 60. The elastic buffer layer 60 is arranged to better support the flexible screen 101 during use. In addition, two adjacent laminates 30 need to be bent, a certain interval may exist between two adjacent laminates 30, and the elastic buffer layer 60 is arranged to support the flexible screen 101, so that when two adjacent laminates 30 are bent, the laminates 30 may be prevented from clamping the flexible screen 101, and the flexible screen 101 is protected well.

In an embodiment, referring to fig. 18, the folding mechanism 20 further includes elastic pieces 70 respectively disposed on the front surfaces 301 of two adjacent lamination sheets 30, and a containing groove 35 is disposed on a side edge of the front surface 301 of each lamination sheet 30; in two adjacent laminations 30: one end of the elastic sheet 70 is fixed in the receiving groove 35 of one lamination sheet 30, the other end of the elastic sheet 70 is slidably disposed in the receiving groove 35 of the other lamination sheet 30, and the receiving groove 35 of the other lamination sheet 30 has a vacant section 351 spaced apart from the other end of the elastic sheet 70 when the front surfaces 301 of the two lamination sheets 30 are kept flat. When the front surfaces 301 of two adjacent laminated sheets 30 are kept flat, one end of the elastic sheet 70 is fixed in the accommodating groove 35 of one laminated sheet 30, and a vacant section 351 is arranged between the other end of the elastic sheet 70 and the inner side wall of the accommodating groove 35 of the other laminated sheet 30, so that when the two adjacent laminated sheets 30 are bent towards the front surface 301 side, the other end of the elastic sheet 70 can extend into the accommodating section, the laminated sheet 30 can be prevented from clamping the flexible screen 101, and the flexible screen 101 can be well protected. And the elastic sheet 70 can well support the flexible screen 101 when the front faces 301 of the adjacent two lamination sheets 30 are leveled for convenient use.

In one embodiment, the folding mechanism 20 includes both the elastic buffer layer 60 and the elastic sheet 70, and the elastic buffer layer 60 is disposed on the elastic sheet 70 to support the elastic buffer layer 60 well, so as to better support and protect the flexible screen 101 during use.

In one embodiment, referring to fig. 12, a deformation cavity 34 is formed in a position adjacent to the positioning rib 32 in each lamination 30, so that when the positioning rib 32 is pressed against the positioning rib 32, the positioning rib 32 can elastically deform toward the deformation cavity 34, so that the positioning rib 32 elastically deforms toward a direction away from the middle of the corresponding accommodating cavity 31, and further, when the sliding block 52 is pushed into the corresponding accommodating cavity 31, abrasion between the positioning latching protrusion 525 and the corresponding positioning rib 32 can be reduced.

In one embodiment, referring to fig. 13, a buffering cavity 528 is formed in each sliding block 52 adjacent to the positioning locking protrusion 525, so that when the positioning locking protrusion 525 is pressed against the positioning locking protrusion 525, the positioning locking protrusion 525 can elastically deform toward the buffering cavity 528, so that the positioning locking protrusion 525 elastically deforms toward the middle of the sliding block 52, and further, when the sliding block 52 is pushed into the corresponding receiving cavity 31, the abrasion between the positioning locking protrusion 525 and the corresponding positioning protruding rib 32 can be reduced.

In one embodiment, referring to fig. 7 and 11, each guide member 40 has an elongated cross-section and the corresponding slide 33 has an elongated hole cross-section. In some embodiments, referring to fig. 15, each runner 33 has a trapezoidal cross-section and each corresponding guide 40 has a trapezoidal cross-section. In some embodiments, referring to fig. 16, each runner 33 is circular in cross-section and the corresponding guide 40 is circular in cross-section. In still other embodiments, each guide member 40 has a triangular, oval, etc. cross-section, and each runner 33 has a hole-like cross-section that matches the cross-section of the guide member 40.

In one embodiment, referring to fig. 7 and 9, each receiving cavity 31 has a rectangular cross-section along the length of the stack 30, and each corresponding slider 52 has a rectangular cross-section along the length of the stack 30. In other embodiments, the cross-section of each receiving cavity 31 along the length of the lamination 30 has other shapes, for example, referring to fig. 10, the cross-section of each receiving cavity 31 along the length of the lamination 30 is trapezoidal, and the cross-section of each corresponding sliding block 52 along the length of the lamination 30 is trapezoidal; as shown in fig. 11, each receiving cavity 31 has a circular cross-section along the length of the lamination sheet 30, and each corresponding sliding block 52 has a circular cross-section along the length of the lamination sheet 30.

In one embodiment, referring to fig. 7, the receiving cavities 31 and the corresponding runners 33 of each lamination 30 are arranged side by side along the length of the lamination 30 for convenient layout and reduced thickness of the lamination 30. Of course, referring to fig. 14, in some embodiments, the accommodating cavity 31 and the corresponding slide 33 on each lamination 30 may also be arranged side by side along the thickness direction of the lamination 30.

In one embodiment, referring to fig. 7, two receiving cavities 31 may be formed on one side of each lamination 30. In still other embodiments, referring to fig. 17, three receiving cavities 31 may be formed in one side of each lamination 30. In other embodiments, one side of each lamination 30 may define one receiving cavity 31, four receiving cavities 31, and so on.

In one embodiment, referring to fig. 7, two runners 33 may be provided on one side of each lamination 30. In still other embodiments, referring to fig. 17, three runners 33 may be provided on one side of each lamination 30. In still other embodiments, one side of each lamination 30 may define a channel 33, four channels 33, etc.

In one embodiment, the back side 302 of each lamination 30 is slotted with a slot 36 so that, in use, wires can be routed through the slot 36, thereby reducing the thickness.

Referring to fig. 1 to 4, an embodiment of the present application further provides a folding screen 10, which includes a flexible screen 101 and a folding mechanism 20 as described in any of the above embodiments, wherein a back surface of the flexible screen 101 is supported on a front surface 301 of each lamination 30. The folding screen 10 of the embodiment of the application uses the folding mechanism 20 of the above embodiment, and when the folding screen is folded, the bending axes of the two adjacent laminates 30 are adjacent to the flexible screen 101, so that the stretching and shrinking deformation of the flexible screen 101 can be reduced, the flexible screen 101 can be better protected, and the service life of the flexible screen 101 can be ensured.

In one embodiment, the circular mandrel 401 of each guide 40 is located at the middle position in the thickness direction of the flexible screen 101, so that the stretching and shrinking deformation of the flexible screen 101 can be minimized when the folding mechanism 20 is folded, so as to better protect the flexible screen 101.

Referring to fig. 1 to 3, an embodiment of the present application further provides a mobile terminal 100, which includes a foldable body 11 and a foldable screen 10 according to any of the above embodiments, wherein the foldable screen 10 is mounted on the body 11. The mobile terminal 100 of the embodiment of the application uses the folding screen 10 of the above embodiment, and when the folding screen is folded, the stretching and shrinking deformation of the flexible screen 101 can be reduced, so that the flexible screen 101 is better protected, and the service life of the flexible screen 101 is ensured. The mobile terminal 100 may be an electronic device such as a smart phone or a tablet computer.

In one embodiment, referring to fig. 1 to 3, a locking assembly 12 is mounted on the body 11 and is used to lock and connect two ends of the body 11 when the body 11 is folded. A locking assembly 12 is provided on the body 11, and when the body 11 is folded, both ends of the body 11 can be locked to maintain the folded body 11.

In one embodiment, referring to fig. 2 and 3, the locking assembly 12 is a pair of magnetic members 121 magnetically attracted to each other, and two magnetic members 121 of each pair of magnetic members 121 are respectively installed at two ends of the body 11, so that when the body 11 is folded, the magnetic members are magnetically locked. In an embodiment, the locking assembly 12 may be a structure formed by a hook and a slot, and the two ends of the body 11 are respectively mounted on the hook and the slot, so that the body 11 is locked in the folded state by the hook being clamped with the slot when folded.

The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed.