CN215499055U - Connecting structure and movable mechanism - Google Patents

Abstract

The application discloses a connecting structure and a movable mechanism, wherein the connecting structure is used for connecting a first structural part and a second structural part which can slide relatively and are matched in a rotating mode, the first structural part comprises a first sliding block and a second sliding block which are arranged at intervals along a first direction, in the connecting structure, a sliding part comprises a first sliding part arranged on the first sliding block and a second sliding part arranged on the second sliding block, and the first sliding part and the second sliding part are arranged at intervals along the first direction; the track body can be fixed in the second structure, and the track body includes first spacing portion and the spacing portion of second, and first spacing portion and the spacing portion of second distribute along first direction, and at least one in first spacing portion and the spacing portion of second is equipped with the equipment breach, and the slider is connected with the track body through the equipment breach, first sliding part and first spacing portion sliding fit, second sliding part and the spacing portion sliding fit of second. When the connecting structure is used for connecting two structural members which can slide relatively and are matched in a rotating manner, the whole machining process is simple, and the cost is low.

Description

Connecting structure and movable mechanism

Technical Field

The application belongs to the technical field of communication equipment, and particularly relates to a connecting structure and a moving mechanism.

Background

As various advanced technologies are applied to electronic devices, the updating speed of the electronic devices is faster and faster, and the requirements of users on the electronic devices are higher and higher. Taking the flexible screen as an example, the foldable electronic device is developed rapidly, and the electronic device has a larger display area and better portability.

In addition, in the related art, the flexible screen in a folded state forms a 'water drop-shaped' structure so as to prevent the bending part of the flexible screen from being easily extruded to cause an excessive bending phenomenon. In order to enable the flexible screen to form a 'water drop shape' structure, in the related art, the two screen supporting plates corresponding to the middle area of the flexible screen and the hinge structure form a rotation relationship, so that when the whole electronic device is switched to a folded state, the rotation angle of the two screen supporting plates can at least exceed 180 degrees, and an avoiding space is provided for the flexible screen to form the 'water drop shape' structure.

Furthermore, in order to enable the rotation angle of the two screen supporting plates to exceed 180 degrees, the swing arm structure can be connected with the screen supporting plates, and the swing arm structure and the screen supporting plates can generate relative sliding relation and relative rotation relation. In the related art, the rail body having the closed rail groove is fixed on the screen support plate, the sliding member is disposed in the rail groove, and the sliding member is fixed on the swing arm structure by welding or the like, so that the swing arm structure and the screen support plate are connected together, and the swing arm structure and the screen support plate can slide relative to each other and also rotate relative to each other.

However, the above-mentioned connection structure requires many steps in the assembling process, and needs to add fixing processes such as welding, etc., and the whole processing process is complicated and the cost is high.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application aims to provide a connecting structure and a movable mechanism so as to solve the problems that when two structural members which can slide relatively and are matched in a rotating mode are connected through the existing connecting structure, the whole machining process is complex, and the cost is high.

In order to solve the technical problem, the present application is implemented as follows:

in a first aspect, an embodiment of the present application discloses a connection structure for connecting a first structural member and a second structural member that are capable of sliding relative to each other and are rotationally engaged, where the first structural member includes a first slider and a second slider that are disposed at an interval in a first direction,

the connecting structure comprises a sliding part and a track body, the sliding part comprises a first sliding part and a second sliding part, the first sliding part is arranged on the first sliding block, the second sliding part is arranged on the second sliding block, and the first sliding part and the second sliding part are arranged at intervals along the first direction;

the track body can be fixed in the second structure, the track body includes first spacing portion and the spacing portion of second, first spacing portion with the spacing portion of second is followed first direction distributes, first spacing portion with at least one of the spacing portion of second is equipped with the equipment breach, the slider passes through the equipment breach with the track body coupling, first sliding part with first spacing portion sliding fit, the second sliding part with the spacing portion sliding fit of second.

In a second aspect, an embodiment of the present application further discloses an active structure, which includes a first structural member, a second structural member, and the connecting structure of the claim, wherein the first structural member includes a first sliding block and a second sliding block that are arranged at an interval along a first direction, and the first structural member is connected to the second structural member through the connecting structure, so that the first structural member and the second structural member can slide relatively and are in running fit.

The embodiment of the application provides a connecting structure, which can be used for connecting a first structural member and a second structural member, and enables the first structural member and the second structural member to relatively slide and be in running fit. In the connecting structure, a first sliding part of the sliding part is arranged on a first sliding block of the first structural member, a second sliding part of the sliding part is arranged on a second sliding block of the first structural member, and the first sliding block and the second sliding block and the first sliding part and the second sliding part are arranged at intervals, so that the rail body in the connecting structure can be matched with the sliding part and the first structural member. The track body can be fixed in the second structure, and the track body includes first spacing portion and the spacing portion of second, first sliding part and first spacing portion sliding fit, second sliding part and the spacing portion sliding fit of second to make whole slider can be in the same place with whole track body equipment link, and make slider and track body relative slip, and normal running fit, and then make first structure and second structure relative slip, and normal running fit.

Under the condition of adopting the technical scheme, the sliding part comprising the first sliding part and the second sliding part does not need to be arranged separately from the first structural component in advance, and before the first structural component and the second structural component are assembled, the sliding part can be fixedly connected with the first structural component, so that the first structural component and the sliding part can be integrally formed, the total number of single parts is reduced, and the spare part efficiency is improved; in addition, in the process of assembling the first structural member and the second structural member, the sliding piece can be directly installed in the rail body, the subsequent connecting process of the first structural member and the second structural member is omitted, and the assembling efficiency is improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 is a schematic structural diagram of a folding mechanism disclosed in an embodiment of the present application;

FIG. 2 is a schematic view of a folding mechanism disclosed in an embodiment of the present application in another orientation;

FIG. 3 is a schematic diagram of a portion of a folding mechanism including a first screen supporting plate according to an embodiment of the present disclosure;

FIG. 4 is a schematic structural diagram of a base portion of the folding mechanism disclosed in the embodiments of the present application;

FIG. 5 is a schematic diagram of a portion of a folding mechanism including a third screen supporting plate according to an embodiment of the present application;

FIG. 6 is a schematic diagram of a part of a folding mechanism including a first swing arm and a second swing arm according to an embodiment of the present application;

FIG. 7 is an exploded schematic view of the structure shown in FIG. 6;

FIG. 8 is a schematic diagram of a portion of a folding mechanism including a gear synchronization mechanism according to an embodiment of the present disclosure;

fig. 9 is an exploded view of a portion of a folding mechanism including a first cam sleeve and a second cam sleeve as disclosed in an embodiment of the present application;

FIG. 10 is a schematic view of the engagement between the first and second swing arms and the base in the folding mechanism disclosed in the embodiments of the present application;

FIG. 11 is a schematic view of a portion of a folding mechanism disclosed in an embodiment of the present application;

FIG. 12 is a schematic cross-sectional view A-A of the structure shown in FIG. 11;

FIG. 13 is a schematic cross-sectional view of the structure shown in FIG. 11 in the direction B-B;

FIG. 14 is a schematic cross-sectional view of the structure shown in FIG. 11 in the direction C-C;

FIG. 15 is a schematic cross-sectional view of the structure shown in FIG. 11 in the direction D-D;

fig. 16 is a diagram illustrating a state of the first swing arm and the second swing arm in cooperation with the third screen supporting plate in the folding mechanism according to the embodiment of the present application;

fig. 17 is another state diagram of the first swing arm and the second swing arm in cooperation with the third screen support plate in the folding mechanism disclosed in the embodiment of the present application;

fig. 18 is a schematic view showing an assembly of the sliding portion with the first structural member in the connecting structure according to the embodiment of the present application;

fig. 19 is a schematic view illustrating an assembly of the rail body and the second structural member in the connection structure disclosed in the embodiment of the present application;

FIG. 20 is a schematic view of the structure shown in FIG. 19 in another orientation;

fig. 21 is a schematic structural diagram of a movable mechanism disclosed in the embodiment of the present application.

Description of reference numerals:

100-base part, 110-third rotating part, 120-fourth rotating part, 130-containing groove,

210-first shell seat, 211-sliding groove, 212-avoidance hole, 220-second shell seat,

310-a first screen supporting plate, 311-an abdicating hole, 320-a second screen supporting plate, 330-a third screen supporting plate, 340-an elastic reset piece,

401-a first rotating part, 402-a second rotating part, 410-a first swing arm, 420-a second swing arm, 430-a third swing arm, 431-a first slide block, 432-a second slide block, 440-a fourth swing arm,

510-a track body, 511-a first limit part, 511 a-a hollow cavity, 512-a second limit part, 513-a spacing piece, 514-an assembly notch, 520-a sliding piece, 521-a first sliding part, 522-a second sliding part,

610-a first connecting shaft, 620-a second connecting shaft, 631-a first gear, 632-a second gear, 633-a first meshing tooth, 634-a second meshing tooth, 640-a gear bracket, 651-a first cam sleeve, 652-a second cam sleeve, 653-a connecting rod, 660-an elastic element, 671-a first limiting element, 672-a second limiting element, 673-a mounting element and 674-a snap spring.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that embodiments of the application may be practiced in sequences other than those illustrated or described herein, and that the terms "first," "second," and the like are generally used herein in a generic sense and do not limit the number of terms, e.g., the first term can be one or more than one. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.

The folding mechanism and the electronic device provided in the embodiments of the present application are described in detail below with reference to the accompanying drawings through specific embodiments and application scenarios thereof.

As shown in fig. 18 to 21, the present embodiment discloses a connection structure by which components other than the connection structure can be connected to each other, and the components can slide relative to each other and can be rotationally fitted to each other. For example, the first structural member and the second structural member may be connected to each other by the connecting structure, so that the first structural member and the second structural member have the capability of relative sliding and rotational fit.

Of course, when the first structural member and the second structural member are connected by the connecting structure, in order to ensure that the first structural member and the second structural member can be connected and assembled with the connecting structure, and ensure that the first structural member and the second structural member can form a relatively slidable and rotationally-matched relationship, specific structures of the first structural member and the second structural member need to be designed in advance.

Specifically, the first structural member includes a first slider 431 and a second slider 432, and the first slider 431 and the second slider 432 are spaced apart in the first direction, so that the connection structure can be assembled with the first structural member by the space between the first slider 431 and the second slider 432. The shape and structure of the first slider 431 and the second slider 432 may be selected according to the specific situation of the connection structure, and are not limited herein. In the case where the first structural member has the above-described structure, the specific structure of the second structural member may not be particularly limited as long as the second structural member can be stably connected to the connection structure by means of bonding, welding, connection by a connector, or the like. It should be noted that, as described above, the first structural member and the second structural member can relatively rotate through the connection structure, and the axial direction of the relative rotation between the first structural member and the second structural member is specifically the first direction, and correspondingly, the rotational axial direction between the components in the connection structure is also the first direction.

As shown in fig. 18 and 19, the connection structure disclosed in the embodiment of the present application includes a slider 520 and a rail body 510, and the slider 520 and the rail body 510 can slide relatively, but of course, the slider 520 and the rail body 510 can rotate relatively. Based on the specific structure of the first structural member, the slider 520 may be assembled to the first structural member. The slider 520 includes a first sliding portion 521 and a second sliding portion 522, the first sliding portion 521 is disposed on the first slider 431, the second sliding portion 522 is disposed on the second slider 432, and the first sliding portion 521 and the second sliding portion 522 are spaced apart from each other in the first direction.

By providing the space between the first sliding portion 521 and the second sliding portion 522, when the slider 520 and the rail body 510 are assembled with each other, it can be ensured that the rail body 510 can be assembled on the slider 520 through the space between the first sliding portion 521 and the second sliding portion 522, and further, the first structural member and the second structural member are reliably connected with each other by the slider 520 and the rail body 510 connected with each other.

Specifically, the shape and size of each of the first sliding part 521 and the second sliding part 522, and the size of the space between the two, and other parameters, can be flexibly selected according to actual requirements. More specifically, by designing the corresponding mold, the slider 520 and the first structural member may be formed by integral die casting or the like, so that the reliability of the connection relationship between the slider 520 and the first structural member may be improved to some extent, and the difficulty in processing and assembling between the slider 520 and the first structural member may be reduced. Alternatively, an integral plate-shaped portion may be formed on the first structural member, and the first slider 431 and the second slider 432 may be formed on the plate-shaped portion by cutting or the like so as to be spaced apart from each other.

Correspondingly, in order to adapt to the sliding member 520 and the first structural member of the above structure, the rail body 510 may be correspondingly fixed on the second structural member, and the rail body 510 includes a first limiting portion 511 and a second limiting portion 512, the first limiting portion 511 and the second limiting portion 512 are distributed along the first direction, and at least one of the first limiting portion 511 and the second limiting portion 512 is provided with an assembling notch 514, so as to ensure that the sliding member 520 can be connected with the rail body 510 through the assembling notch 514, further, the first sliding portion 521 is in sliding fit with the first limiting portion 511, the second sliding portion 522 is in sliding fit with the second limiting portion 512, and the first structural member forms a relatively slidable and rotationally fit connection relationship with the second structural member through the sliding member 520 and the rail body 510 which are matched with each other.

Specifically, the first limiting portion 511 and the second limiting portion 512 may have the same structure, in which case, both may have an open structure with an assembly notch 514, so as to ensure that the first sliding portion 521 can be matched with the first limiting portion 511 and the second sliding portion 522 can be matched with the second limiting portion 512. In this case, the first position-limiting portion 511 needs to provide a complete position-limiting function for the first sliding portion 521, that is, the first sliding portion 521 can only move within the sliding track of the first position-limiting portion 511, and correspondingly, the second position-limiting portion 512 also needs to provide a complete position-limiting function for the second position-limiting portion 512. More specifically, the sliding tracks of the first position-limiting portion 511 and the second position-limiting portion 512 may be communicated, or a blocking structure may be disposed between the first position-limiting portion 511 and the second position-limiting portion 512, which will be described in detail below.

The embodiment of the application provides a connecting structure, which can be used for connecting a first structural member and a second structural member, and enables the first structural member and the second structural member to relatively slide and be in running fit. In the connection structure, the first sliding portion 521 of the slider 520 is disposed on the first slider 431 of the first structural member, the second sliding portion 522 of the slider 520 is disposed on the second slider 432 of the first structural member, and the first sliding portion 521 and the second sliding portion 522 are spaced apart from each other between the first slider 431 and the second slider 432, so as to ensure that the rail body 510 in the connection structure can be matched with the slider 520 and the first structural member. The rail body 510 can be fixed to a second structural member, the rail body 510 includes a first limiting portion 511 and a second limiting portion 512, the first sliding portion 521 is in sliding fit with the first limiting portion 511, and the second sliding portion 522 is in sliding fit with the second limiting portion 512, so that the whole sliding member 520 can be assembled and connected with the whole rail body 510, and the sliding member 520 and the rail body 510 can slide relatively and be in rotating fit, and further the first structural member and the second structural member can slide relatively and be in rotating fit.

Under the condition of adopting the technical scheme, the sliding piece 520 comprising the first sliding part 521 and the second sliding part 522 does not need to be arranged separately from the first structural component in advance, and before the first structural component and the second structural component are assembled, the sliding piece 520 and the first structural component can form a fixed connection relationship, so that the first structural component and the sliding piece 520 can be integrally formed, the total number of single parts is reduced, and the efficiency of spare parts is improved; in addition, in the process of assembling the first structural member and the second structural member, the sliding member 520 may be directly mounted to the rail body 510, so that a subsequent connection process of the first structural member and the second structural member is omitted, and the assembly efficiency is improved.

Of course, in other embodiments of the present application, the first limiting portion 511 and the second limiting portion 512 may have different structures, for example, when the first sliding portion 521 and the second sliding portion 522 are both cylindrical structures and their axes are not collinear, or when the first sliding portion 521 and the second sliding portion 522 have different sizes, the specific structures of the sliding tracks disposed on the first limiting portion 511 and the second limiting portion 512 are different. For another example, when the first sliding portion 521 and the second sliding portion 522 are symmetrically disposed, the first limiting portion 511 and the second limiting portion 512 can act together to provide a complete limiting effect for the sliding member 520, and in this case, the specific structures of the first limiting portion 511 and the second limiting portion 512 are different. More specifically, taking the upper and lower limiting portions as an example, the first limiting portion 511 may provide an upper limiting function for the sliding member 520, and the second limiting portion 512 may provide a lower limiting function for the sliding member 520, in this case, the assembling notch 514 may be correspondingly disposed on at least one of the first limiting portion 511 and the second limiting portion 512 according to the specific structure of each of the two portions, and for the sake of brevity, such specific embodiment will not be described herein too much.

As described above, the sliding tracks of the first stopper portion 511 and the second stopper portion 512 can communicate with each other, and specifically, the sliding tracks of the groove-shaped structures can be provided in both the first stopper portion 511 and the second stopper portion 512, and the groove-shaped structures of the first stopper portion 511 and the second stopper portion 512 extend to communicate with each other. In another embodiment of the present application, as shown in fig. 19 and 20, the rail body 510 further includes a spacer 513, the first limiting portion 511 is located on one side of the spacer 513, and the second limiting portion 512 is located on the other side of the spacer 513, so that the first limiting portion 511 and the second limiting portion 512 are spaced apart by the spacer 513, and the sliding tracks of the first limiting portion 511 and the second limiting portion 512 are no longer communicated with each other. In the above-mentioned technical solution, the spacer 513 is disposed between the first sliding portion 521 and the second sliding portion 522 in the first direction in a limited manner, and further the first sliding portion 521 and the second sliding portion 522 can be mutually limited with the spacer 513 in the first direction, so as to prevent the sliding member 520 and the rail body 510 from being stuck and unable to normally move relative to each other due to excessive movement of the first sliding portion 521 and/or the second sliding portion 522 in the first direction.

Specifically, the spacer 513 may be a plate-shaped structural member, and the thickness of the spacer 513 may be determined according to the actual situation such as the distance between the first sliding part 521 and the second sliding part 522, which is not limited herein. More specifically, the forming manner of the whole track body 510 may be determined according to the specific structures of the first limiting portion 511 and the second limiting portion 512, for example, in the case that the first limiting portion 511 and the second limiting portion 512 are both provided with complete sliding tracks, corresponding sliding tracks may be formed on two opposite sides of a block structure by cutting or etching. Correspondingly, when the structures of the first limiting portion 511 and the second limiting portion 512 are changed, the forming manner of the entire rail body 510 may also be changed correspondingly.

Alternatively, as shown in fig. 18, an end of the first sliding portion 521 facing the second sliding portion 522 and/or an end of the second sliding portion 522 facing the first sliding portion 521 are provided with an arc-shaped guiding end, and the arc-shaped guiding end may be a spherical structure, or the arc-shaped guiding end may also be provided with an avoiding structure such as a chamfer. Under the effect of arc guide end, can reduce the probability that first sliding part 521 and/or second sliding part 522 and the track body 510 go up to set up like the slip orbit of slot-shaped or poroid structure and produce the jamming effectively, promote the cooperation smoothness nature between slider 520 and the track body 510, and then reduce folding mechanism's the degree of difficulty that opens and shuts, promote the user experience of the electronic equipment who adopts this folding mechanism.

Alternatively, in the first direction, the projections of the first sliding part 521 and the second sliding part 522 are overlapped, that is, the outer shapes of the first sliding part 521 and the second sliding part 522 are the same, and the corresponding sizes are the same. In this case, the first sliding portion 521 and the second sliding portion 522 are relatively difficult to process, and the fitting stability between the first stopper portion 511 and the second stopper portion 512 is better. Specifically, the first sliding portion 521 and the second sliding portion 522 may be both cylindrical structural members to improve the smoothness of the fit relationship between the two and the rail body 510, and the first sliding portion 521 and the second sliding portion 522 may be both solid structures, which may improve the structural strength of the two, thereby ensuring higher fit reliability between the sliding member 520 and the rail body 510, and improving the overall performance of the entire folding mechanism.

Based on the above embodiment, by providing the corresponding sliding tracks on the first limiting portion 511 and the second limiting portion 512, it can be ensured that the sliding member 520 can form a stable fit relationship with the rail body 510. Also, as described above, at least one of the first and second stopper portions 511 and 512 may have a complete sliding track formed thereon.

In another embodiment of the present application, the first limiting portion 511 has a first track surface, the second limiting portion 512 has a second track surface, and a projection of the first track surface is located outside a projection of the second track surface in the first direction. In other words, the first track surface of the first position-limiting portion 511 for providing the position-limiting function and the second track surface of the second position-limiting portion 512 for providing the position-limiting function are different in shape, and since the first sliding portion 521 and the second sliding portion 522 have the same shape and size, in the present embodiment, each of the first position-limiting portion 511 and the second position-limiting portion 512 can only provide a partial position-limiting function for the sliding member 520, and both of the first position-limiting portion 511 and the second position-limiting portion act on the sliding member 520, so that the sliding member 520 can be provided with a complete position-limiting function.

More generally, as shown in fig. 19 and 20, for the sake of understanding, the whole track body 510 is oriented upward with the second structural member in fig. 19 oriented downward. The first position-limiting portion 511 can provide a lower position-limiting function for the entire sliding member 520, that is, the first position-limiting portion 511 can limit the downward movement of the first sliding portion 521; correspondingly, the second limiting portion 512 can provide an upper limiting function for the entire sliding member 520, that is, the second limiting portion 512 can limit the upward movement of the second sliding portion 522.

When the above technical solution is adopted, the first limiting portion 511 and the second limiting portion 512 can be used for providing a complete limiting effect for the whole sliding member 520, and simultaneously, the processing difficulty of the whole rail body 510 can be reduced. Specifically, since the first limiting portion 511 and the second limiting portion 512 are not provided with a blocking structure on the upper side of one and the lower side of the other, the rail body 510 having the first rail surface and the second rail surface may be integrally formed by die-casting or the like in the process of forming the rail body 510, thereby reducing the processing difficulty of the rail body 510, improving the production efficiency of the entire folding mechanism, and improving the problem of accuracy reduction of the rail body 510 due to processing errors in and between the processes to a certain extent due to the reduction of intermediate processes.

As described above, the rail body 510 further includes the spacer 513, the spacer 513 can block the sliding track communication between the first limiting portion 511 and the second limiting portion 512, and the first limiting portion 511 and the second limiting portion 512 are respectively disposed on two opposite sides of the spacer 513. As shown in fig. 19, the first position-limiting portion 511 protrudes from the spacer 513 in a direction away from the second position-limiting portion 512 to form a first track surface.

Further, the first position-limiting portion 511 is provided with a hollow cavity 511a, an opening of the hollow cavity 511a faces the direction of the second position-limiting portion 512 along the first direction, and the hollow cavity 511a can reduce the weight of the entire rail body 510. Also, in the case that the first stopper 511 is provided with the hollow cavity 511a of the above-described structure, the first stopper 511 may provide a lower stopper effect to the slider 520, thereby maximally reducing the weight of the first stopper 511.

Based on the connection structure disclosed in the above embodiment, an embodiment of the present application further discloses a movable mechanism, and as shown in fig. 21, the movable mechanism includes a first structural member, a second structural member and the connection structure disclosed in the above embodiment, where the first structural member includes a first slider 431 and a second slider 432 that are disposed at an interval along a first direction, and the first structural member is connected with the second structural member through the connection structure, so that the first structural member and the second structural member can slide relatively and are rotatably matched. In view of the above, the first and second structural members and the connecting structure provided with the first track surface, the second track surface and the hollow cavity 511a have been described in detail, and for brevity, the description will not be repeated here.

As described above, in the case that the projections of the first and second position-limiting portions 511 and 512 do not overlap with each other, the first and second position-limiting portions 511 and 512 cooperate with each other to provide a position-limiting function for the slider 520. Based on this, further, in the moving mechanism of the present disclosure, optionally, as shown in fig. 19 and fig. 20, the first rail surface is located on a side of the first limiting portion 511 facing away from the second structural member, and the second rail surface is located on a side of the second limiting portion 512 facing toward the second structural member, that is, as mentioned above, the first limiting portion 511 provides a lower limiting effect for the sliding member 520, and the second limiting portion 512 provides an upper limiting effect for the sliding member 520. Based on the foregoing, optionally, as shown in fig. 20, the second structural member is provided with a yielding hole 311, and the second structural member has a supporting surface, and the rail body 510 may be located on one side of the supporting surface of the second structural member. In the direction perpendicular to the supporting surface of the second structural member, the projection of the second limiting portion 512 is located in the receding hole 311. More specifically, the range of the relief hole 311 may be slightly larger than the range of the projection of the second limiting portion 512, so as to ensure smooth demolding process and maximally ensure the structural strength of the region of the second structural member where the rail body 510 is mounted.

By adopting the technical scheme, the track body 510 can be formed by adopting a die which is buckled up and down, the upper die can be integrally positioned above the second structural member, one part of the lower die extends into the upper part of the second structural member from the lower part of the second structural member through the abdicating hole 311, and in the demoulding process, the lower die can be separated from the track body 510 by virtue of the abdicating hole 311 on the second structural member, so that the processing process is completed, and the processing difficulty of the track body 510 can be further reduced; moreover, under the above technical solution, the second structural member and the rail body 510 may also be integrally formed by a mold, so that the process steps may be further reduced, the assembly efficiency of the entire folding mechanism may be improved, and the connection reliability between the rail body 510 and the second structural member may be improved.

In addition, based on the connection structure provided in any of the above embodiments of the present application, another movable mechanism is further provided in the embodiments of the present application, and the movable mechanism includes a first structural member, a second structural member and the connection structure, wherein the first limiting member in the connection structure may not be provided with the hollow cavity 511a, and the structural strength of the first limiting member is relatively stronger, so that a more reliable limiting function can be provided for the sliding member 520. Similarly, in view of the above detailed description of the specific structures of the first structural member and the second structural member, the assembling manner with the connecting structure, and the like, the text will not be repeated here in view of brevity.

In addition, as shown in fig. 1 to 21, an embodiment of the present application further discloses a folding mechanism, which can be applied to an electronic device, and the flexible screen is matched with the folding mechanism to form an electronic device with folding capability, so that the electronic device has a larger display area and better portability, and user experience is improved.

The folding mechanism comprises a base 100, a first shell seat 210, a second shell seat 220, a first screen supporting plate 310, a second screen supporting plate 320 and a third screen supporting plate 330, wherein the first shell seat 210 is arranged on the first screen supporting plate 310, and the second shell seat 220 is arranged on the second screen supporting plate 320; meanwhile, the folding mechanism further includes a swing arm assembly by which the first and second housing seats 210 and 220 are movably mounted on the base 100 such that the first screen, the second screen support plate 320, the first housing seat 210, and the second housing seat 220 are integrally formed with the base 100. Moreover, the first housing seat 210 is rotationally matched with the first screen supporting plate 310, and the second housing seat 220 is rotationally matched with the second screen supporting plate 320, so that along with the relative rotation between the first housing seat 210 and the second housing seat 220, the relative rotation angle between the first screen supporting plate 310 and the second supporting plate can exceed 180 degrees, so that when the folding mechanism is switched to a folding state, the first screen supporting plate 310 and the second screen supporting plate 320 can form a flaring-shaped structure, and a larger accommodating space is provided for the middle part of the flexible screen, namely the folded part of the flexible screen; meanwhile, the third screen support plate 330 and the base body move relatively, so that when the electronic device comprising the folding mechanism is folded, the third screen support plate 330 can provide a certain avoiding space for the flexible screen, the accommodating space of the middle part of the flexible screen is further enlarged, and the flexible screen is prevented from being excessively folded to cause damage to the flexible screen.

As described above, the first housing seat 210 is disposed on the first screen supporting plate 310, the second housing seat 220 is disposed on the second screen supporting plate 320, the first housing seat 210 and the first screen supporting plate 310 are disposed on the first side of the base 100, the second housing seat 220 and the second screen supporting plate 320 are disposed on the second side of the base 100, and the first side and the second side are disposed opposite to each other. Specifically, the base body, the first housing seat 210, the second housing seat 220, the first screen supporting plate 310 and the second screen supporting plate 320 may be made of materials with relatively high structural strength, such as metal or plastic, so as to ensure that the connection and the matching relationship between the components are relatively stable, and provide a reliable supporting effect for the flexible screen.

Specifically, the first housing seat 210 and the second housing seat 220 may have different parameters such as structure and size, and are both flexibly designed according to other devices such as a flexible screen of the electronic device, optionally, the first housing seat 210 and the second housing seat 220 may have symmetrical structures and the same size, so as to facilitate the processing and assembling of the entire folding mechanism.

Similarly, the respective sizes of the first screen supporting plate 310 and the second screen supporting plate 320 may be determined according to parameters such as the area of the flexible screen to be supported, and optionally, both the first screen supporting plate 310 and the second screen supporting plate 320 may be rectangular or approximately rectangular structures, so as to improve the supporting effect on the flexible screen. Further, the first screen supporting plate 310 and the second screen supporting plate 320 can be symmetrically arranged, so as to reduce the difficulty in processing and assembling the whole folding mechanism.

For convenience of description, the following description will be made on the basis that the first housing seat 210 and the second housing seat 220 are symmetrically disposed, the first screen support plate 310 and the second screen support plate 320 are symmetrically disposed, and the relationship between the related components is described by taking the first housing seat 210 and the first screen support plate 310 as an example, and as for the relationship between the second housing seat 220 and the second screen support plate 320, the first housing seat 210 and the first screen support plate 310 may be correspondingly designed. Specifically, the first screen supporting plate 310 may be supported on the first housing seat 210, and a connection relationship may be formed between the two, for example, a rotational connection relationship may be formed between the two through a rotating shaft, so as to ensure that the first screen supporting plate 310 can rotate relative to the first housing seat 210; alternatively, the first screen supporting plate 310 and the first housing seat 210 may be supported only by each other, and as for the rotation fit relationship therebetween, the first screen supporting plate 310 may be enabled to rotate relative to the first housing seat 210 by means of a swing arm assembly.

As described above, the third screen supporting plate 330 is movably connected with the base 100 in the self supporting direction. Specifically, the third screen supporting plate 330 may be made of the same material as the first screen supporting plate 310, and the third screen supporting plate 330 may be connected to the base 100 through a limiting structure, so that the third screen supporting plate 330 can move relative to the base 100 only in the self-supporting direction by the limiting function provided by the limiting structure.

As for the movement driving source of the third screen support plate 330, alternatively, during the movement of the third screen support plate 330 toward the base 100, or in a process of setting up and folding the flexible screen of the electronic device, the third screen support plate 330 may be driven to move downward closer to the base 100 by the pressing action provided by the flexible screen generating the deformation action; conversely, in the process that the third screen supporting plate 330 moves away from the base 100, or in a colloquial manner, in the process that the electronic device is unfolded and the flexible screen is disposed upward, the first housing seat 210 and/or the second housing seat 220 and the side of the third screen supporting plate 330 facing the base 100 may be mutually limited, and as the first housing seat 210 and/or the second housing seat 220 rotate relative to the base 100, the third screen supporting plate 330 is lifted, so that the third screen supporting plate 330 moves in a direction further away from the base 100, and finally, a supporting effect is provided for the flexible screen.

In other embodiments of the present application, the third screen supporting plate 330 may be connected to the base 100 by a member having a telescopic capability such as a spring, so that the third screen supporting plate 330 can move relative to the base 100 in the self supporting direction during the switching of the state of the folding mechanism. More specifically, by changing the type of spring selected, etc., the spring and the third screen supporting plate 330 can be brought into different fitting relationships. For example, when the folding mechanism is in the unfolded state and the third screen support plate 330 is flush with the first screen support plate 310, the spring may be in any one of a stretched state, a compressed state, and a natural state to accommodate different needs.

As shown in fig. 6, the swing arm assembly includes a first swing arm 410, a second swing arm 420, a third swing arm 430, and a fourth swing arm 440, all of which may be made of materials with strong structural strength and wear resistance, such as metal, to ensure that the swing arm assembly has a long service life and high reliability.

The first swing arm 410 and the third swing arm 430 are disposed on the same side as the first housing seat 210, that is, the first swing arm 410, the third swing arm 430 and the first housing seat 210 are disposed on the first side of the base 100.

The second swing arm 420 and the fourth swing arm 440 are disposed on the same side as the second housing seat 220, that is, the second swing arm 420, the fourth swing arm 440 and the second housing seat 220 are disposed on the second side of the base 100.

A first end of the first swing arm 410 is rotatably connected to the base 100 such that the first swing arm 410 can rotate about the base 100 through the first end thereof. The second end of the first swing arm 410 is rotatably connected to the first housing base 210, so that the first swing arm 410 can rotate relative to the first housing base 210 through the second end thereof. Specifically, the opposite ends of the first swing arm 410 may form a rotation connection relationship with the base 100 and the first housing seat 210 through pin-like structures, or the opposite ends of the first swing arm 410 may form a rotation connection relationship with the base 100 and the first housing seat 210 by using other arc-shaped matching structures correspondingly, so that the opposite ends of the first swing arm 410 may form a rotation matching relationship with the base 100 and the first housing seat 210, and the text is not described herein in detail in consideration of brevity.

A first end of the third swing arm 430 is rotatably coupled to the base 100 such that the third swing arm 430 can rotate about the base 100 through the first end thereof. The second end of the third swing arm 430 is in sliding fit with the first housing seat 210, so that the second end of the third swing arm 430 and the first housing seat 210 have relative sliding capability during the rotation process of the third swing arm 430. Correspondingly, the second end of the third swing arm 430 is slidably and rotatably engaged with the first screen support plate 310, so that the first screen support plate 310 is driven to rotate relative to the first housing seat 210 by the swing action of the second end of the third swing arm 430 while the third swing arm 430 is assembled and connected with the first screen support plate 310.

In order to ensure the relative rotation between the first housing seat 210 and the first screen supporting plate 310, the rotation axis of the first end of the first swing arm 410 and the rotation axis of the first end of the third swing arm 430 are spaced apart from each other, so that as the first swing arm 410 and the third swing arm 430 rotate relative to the base 100, the second end of the first swing arm 410 and the second end of the third swing arm 430 can rotate relative to each other, and the first screen supporting plate 310 rotates relative to the first housing seat 210. Specifically, the rotation axis of the first end of the first swing arm 410 and the rotation axis of the first end of the third swing arm 430 are parallel to each other, so that the stability of the first swing arm 410 and the third swing arm 430 in the rotation process can be better improved.

A first end of the second swing arm 420 is rotatably coupled to the base 100 such that the second swing arm 420 can rotate about the base 100 through the first end thereof. A second end of the second swing arm 420 is rotatably connected to the second housing seat 220, such that the second swing arm 420 can rotate relative to the second housing seat 220 via the second end thereof. Specifically, similar to the first swing arm 410, the opposite ends of the second swing arm 420 may form a rotation connection relationship with the base 100 and the second housing seat 220 through pin-like structures, or the opposite ends of the second swing arm 420 may form a rotation connection relationship with the base 100 and the second housing seat 220 by using other arc-shaped matching structures correspondingly disposed.

A first end of the fourth swing arm 440 is pivotally connected to the base 100 such that the fourth swing arm 440 can pivot about the base 100 via the first end thereof. The second end of the fourth swing arm 440 is in sliding fit with the second housing seat 220, so that the second end of the fourth swing arm 440 and the second housing seat 220 have relative sliding capability during the rotation of the fourth swing arm 440. Correspondingly, the second end of the fourth swing arm 440 and the second screen support plate 320 can slide relatively and are in rotating fit, so that the second screen support plate 320 is driven to rotate relative to the second housing seat 220 by the swing action of the second end of the fourth swing arm 440 while the fourth swing arm 440 and the second screen support plate 320 are assembled and connected.

Similarly, in order to ensure the relative rotation between the second housing seat 220 and the second screen support plate 320, the rotation axis of the first end of the second swing arm 420 and the rotation axis of the first end of the fourth swing arm 440 are spaced apart from each other, so that as the rotation of the second swing arm 420 and the fourth swing arm 440 relative to the base 100 progresses, the relative rotation between the second end of the second swing arm 420 and the second end of the fourth swing arm 440 can be performed, and the second screen support plate 320 rotates relative to the second housing seat 220. Specifically, the rotation axis of the first end of the second swing arm 420 and the rotation axis of the first end of the fourth swing arm 440 are parallel to each other, so that the stability of the second swing arm 420 and the fourth swing arm 440 in the rotation process can be better improved.

Based on the above structure, the components in the folding mechanism can move relatively under the action of an external force, so that the folding mechanism has an unfolded state and a folded state, where the external force may be an acting force applied to the electronic device by a user, or the external force may be a driving acting force provided by a driving motor and other components built in the electronic device, and this is not limited herein.

In the unfolded state of the folding mechanism, the respective screen support surfaces of the first screen support plate 310, the second screen support plate 320 and the third screen support plate 330 are coplanar, and the portion of the base 100 facing the third screen support plate 330 is spaced from the third screen support plate 330 by a first spacing in the supporting direction. In the folded state of the folding mechanism, the portion of the base 100 facing the third screen support plate 330 is spaced from the third screen support plate 330 in the supporting direction by a second spacing, and the second spacing is smaller than the first spacing.

That is, during the switching of the folding mechanism from the unfolded state to the folded state, the third screen support plate 330 moves a preset distance in a direction close to the base 100 to provide a larger accommodation space for the flexible screen cooperating with the folding mechanism; on the contrary, in the process of switching to the unfolded state, the third screen supporting plate 330 moves to the direction away from the base 100 by a preset distance, so that the third screen supporting plate 330 provides a better supporting effect for the flexible screen cooperating with the folding mechanism.

Meanwhile, based on the connection relationship between the first housing seat 210 and the first screen support plate 310 and the assembly relationship between the first swing arm 410 and the third swing arm 430, when the folding mechanism is in the unfolded state, the respective first sides of the first screen support plate 310 and the second screen support plate 320 are both located between the respective second sides, that is, the side located at the outer side of the first screen support plate 310 and the second screen support plate 320 is the second side, and the side located at the inner side is the first side, correspondingly, the third screen support plate 330 is located between the first screen support plate 310 and the second screen support plate 320, and the three together form a screen support surface of the folding mechanism, so as to provide a support effect for the flexible screen matched with the folding mechanism. In the folded state of the folding mechanism, due to the connection relationship among the components of the folding mechanism, the first screen supporting plate 310 can not only rotate with the first housing seat 210 relative to the base 100, but also the first screen supporting plate 310 can rotate with respect to the first housing seat 210, such that the first screen support plate 310 and the second screen support plate 320 form flared structures, and flares toward the base 100, at which time the interval between the respective first sides of the first and second screen support plates 310 and 320 is greater than the interval between the respective second sides of the first and second screen support plates 310 and 320, which can further enlarge the size of the receiving space in which the folded portion of the flexible screen is located, and acts together with the escape space provided by the third screen support plate 330 near the base 100 to maximize the accommodation space of the folded portion of the flexible screen when folded.

The embodiment of the present application provides a folding mechanism and an electronic device, as described above, the folding mechanism includes a base 100, a first housing seat 210, a second housing seat 220, a first screen support plate 310, a second screen support plate 320, a third screen support plate 330, and a swing arm assembly, the first housing seat 210 and the base 100 are rotatably connected by a first swing arm 410, the second housing seat 220 is rotatably connected with the base 100 by a second swing arm 420, the first screen support plate 310 is slidably and rotatably connected with the base 100 by a third swing arm 430, the second screen support plate 320 is slidably and rotatably connected with the base 100 by a fourth swing arm 440, and the rotation axes of the first swing arm 410 and the third swing arm 430 are spaced from each other, and the rotation axes of the second swing arm 420 and the fourth swing arm 440 are spaced from each other, so that when the folding mechanism is switched to a folded state, the first screen support plate 310 and the second screen support plate 320 can form a flared structure toward the base, thereby providing a larger accommodation space for the folded portion of the flexible screen cooperating with the folding mechanism; meanwhile, the third screen support plate 330 is movably connected with the base 100 in the supporting direction, so that when the folding mechanism is switched to the folding state, the third screen support plate 330 can provide an avoiding space for the flexible screen, the size of an accommodating space where the folded part is located in the flexible screen is further enlarged, the phenomenon that the bending part of the flexible screen is excessively bent due to extrusion is prevented, and the service life of the flexible screen is prolonged.

As described above, the second end of the third swing arm 430 is slidable relative to the first housing seat 210. In order to improve the matching reliability between the first and second swing arms, in an alternative scheme, the first housing seat 210 may be provided with a sliding groove 211, and the second end of the third swing arm 430 is in sliding fit with the sliding groove 211, so as to improve the matching stability between the third swing arm 430 and the first housing seat 210 by means of the sliding groove 211. Of course, in other embodiments of the present application, the third swing arm 430 and the first housing seat 210 may also form a sliding fit relationship through an axle hole type structure.

Further, an avoiding hole 212 is formed in the inner wall of the sliding groove 211, a rail body 510 is fixed to the first screen supporting plate 310, a sliding member 520 is disposed at a second end of the third swing arm 430, the rail body 510 penetrates through the avoiding hole 212 and at least partially extends into the sliding groove 211, and the sliding member 520 and the rail body 510 can slide relatively and are in running fit. By adopting the simple structure, the second end of the third swing arm 430 can form the assembly requirement of relative sliding and rotation fit with the first screen support plate 310, which can reduce the processing and assembling difficulty. Specifically, the track body 510 is a curved structure, and specific parameters of a structure in the track body 510, which is engaged with the slider 520, can be determined according to a motion track formed by the slider 520 during rotation of the third swing arm 430, so that the slider 520 can slide in the track body 510 during rotation of the third swing arm 430. The structure can make full use of the existing structure of the sliding groove 211, and the avoidance hole 212 is formed in the bottom wall of the sliding groove 211 to complete assembly work among components, so that the whole structure is more compact.

Similarly, a sliding slot 211 similar or identical to the structure of the first housing seat 210 may be formed in the second housing seat 220, and the second end of the fourth swing arm 440 is slidably engaged with the sliding slot 211 of the second housing seat 220, so as to improve the stability of the sliding engagement between the second housing seat 220 and the fourth swing arm 440.

Further, the inner wall of the sliding slot 211 of the second housing base 220 may also be provided with an avoiding hole 212 similar to or identical to the structure of the first housing base 210, and the rail body 510 is fixed to the second screen supporting plate 320, and the sliding member 520 is disposed at the second end of the fourth swing arm 440, so that the rail body 510 on the second screen supporting plate 320 passes through the avoiding hole 212 on the second housing base 220 and at least partially extends into the corresponding sliding slot 211, thereby ensuring that the sliding member 520 on the second housing base 220 can stably form an assembly relationship of relatively sliding and rotational fit with the rail body 510 on the second screen supporting plate 320.

More specifically, in the entire folding mechanism, the structure of the portion located on the first side of the base 100 and the structure of the portion located on the second side of the base 100 may be symmetrically arranged, for example, the first screen support plate 310 and the second screen support plate 320 are symmetrically arranged, the first housing seat 210 and the second housing seat 220 are symmetrically arranged, the first swing arm 410 and the second swing arm 420 are symmetrically arranged, and the third swing arm 430 and the fourth swing arm 440 are symmetrically arranged. For convenience of description, the following description is symmetrical to the structure of the middle and back sides of the base 100, and the detailed structure of each component and the connection relationship between the components in the folding mechanism will be described in detail by taking the structure located at the first side of the base 100 as an example.

Optionally, the sliding member 520 may be a long rod-shaped structural member, and during the process of assembling the third swing arm 430 and the first screen support plate 310, the sliding member 520 and the third swing arm 430 which are separately arranged may be prepared in advance, and the sliding member 520 is first installed in the rail body 510 on the first screen support plate 310, and then the sliding member 520 and the third swing arm 430 are fixed into a whole by welding or the like, so that a connection relationship that the third swing arm 430 and the first screen support plate 310 can slide relative to each other and are rotatably matched is formed.

In another embodiment of the present application, the third swing arm 430 and the first screen supporting plate 310 in the folding mechanism can be connected through a connection structure provided in the above embodiment of the present application. Specifically, in the process of connecting the third swing arm 430 and the first screen support plate 310 by the above-mentioned connecting structure, the third swing arm 430 may be specifically the above-mentioned first structural member, and the first screen support plate 310 may be specifically the above-mentioned second structural member. In the case of connecting the third swing arm 430 and the first screen support plate 310 using the above-described connection structure, the difficulty of connection therebetween can be reduced. In view of the above, it is not repeated herein that how to connect the first structural member and the second structural member by the connecting structure and to form the connecting relationship between the first structural member and the second structural member in a relatively slidable and rotatable fit manner is described in detail. Of course, the fourth swing arm 440 and the second screen support plate 320 can also be connected to each other through the above-mentioned connecting structure, and the fourth swing arm 440 and the second screen support plate 320 can slide relatively and are in rotational fit. In addition, the first direction may be a rotation axial direction of the first swing arm 410 in the present embodiment.

As described above, the first swing arm 410 and the base 100, and the second swing arm 420 and the base 100 may be rotationally coupled to each other by a rotational coupling mechanism such as a shaft hole coupling mechanism. In one embodiment of the present application, as shown in fig. 6 and 10, a first end of each of the first swing arm 410 and the second swing arm 420 is provided with a first rotating portion 401 and a second rotating portion 402 distributed along a rotation axial direction of the first swing arm 410, and opposite sides of the base 100 are provided with a third rotating portion 110 and a fourth rotating portion 120, wherein each first rotating portion 401 is rotatably engaged with a corresponding third rotating portion 110, and each second rotating portion 402 is rotatably engaged with a corresponding fourth rotating portion 120. In the case where the first swing arm 410 (and the second swing arm 420) and the base 100 are brought into the rotation connection relationship by the cooperation of the first rotation portion 401 and the second rotation portion 402, the reliability and stability of the rotation connection relationship between the first swing arm 410 (and the second swing arm 420) and the base 100 can be improved.

Moreover, by designing the positions and structures of the first rotating portion 401 and the second rotating portion 402, it can be ensured that the first swing arm 410 and the second swing arm 420 are both in limited fit with the base 100 in a direction perpendicular to the extending direction of the base 100, so as to further improve the stability of fit and the structural reliability between the first swing arm 410 and the second swing arm 420 and the base 100.

Specifically, the first rotating portion 401 and the second rotating portion 402 may have the same structure to reduce the processing difficulty of the first swing arm 410 and the second swing arm 420, the first rotating portion 401 may be a cylindrical structure having a shaft hole or a shaft hole, and correspondingly, the third rotating portion 110 may be a cylindrical structure having a shaft hole or a shaft hole, and at the same time, the shaft may be retracted by an elastic member, so that the shaft may be inserted into the corresponding shaft hole during the process of assembling the first rotating portion 401 and the third rotating portion 110, so as to form a limit fit relationship with the base portion 100 in a direction perpendicular to the extending direction of the base portion 100 while the first rotating portion 401 and the third rotating portion 110 are rotatably connected. In addition, in the first swing arm 410 (and/or the second swing arm 420), a space may be provided between the first rotating portion 401 and the second rotating portion 402, or the first rotating portion 401 and the second rotating portion 402 may be provided adjacently, which is not limited herein.

In another embodiment of the present application, optionally, the first rotating portion 401, the second rotating portion 402, the third rotating portion 110 and the fourth rotating portion 120 may be provided with arc-shaped fitting pieces. More specifically, the first rotating portion 401 and the third rotating portion 110 are provided with arc-shaped mating surfaces corresponding to each other, so that a rotationally mating relationship can be formed therebetween; correspondingly, the second rotating portion 402 and the fourth rotating portion 120 are provided with arc-shaped mating surfaces corresponding to each other, so that the second rotating portion 402 and the fourth rotating portion 120 can also form a rotating mating relationship. Of course, the structures of the arc-shaped mating surfaces on the first rotating portion 401 and the second rotating portion 402 may be the same or different, and are not limited herein.

Meanwhile, in order to ensure that the first rotating portion 401 and the third rotating portion 110, and the second rotating portion 402 and the fourth rotating portion 120 are used to rotatably connect the first housing seat 210 and the base portion 100, the first swing arm 410 (and the second swing arm 420) can be in a limiting relationship with the base portion 100 in a direction perpendicular to the extending direction of the base portion 100, as shown in the figure, the arc-shaped mating surface of the first rotating portion 401 is opposite to the arc-shaped mating surface of the second rotating portion 402. Specifically, if the arc surface of the arc-shaped engagement surface of the first rotating portion 401 faces upward, the arc surface of the arc-shaped engagement surface of the second rotating portion 402 may face downward. In the case of the above-mentioned technical solution, by engaging the third rotating portion 110 with the first rotating portion 401 and engaging the fourth rotating portion 120 with the second rotating portion 402, it is ensured that the first swing arm 410 (and the second swing arm 420) and the base portion 100 can be mutually limited in a direction perpendicular to the extending direction of the base portion 100.

Accordingly, in the case where the first rotating portion 401 and the second rotating portion 402 of the first swing arm 410 adopt the above-described technical solutions, the upper first rotating portion 401 and the second rotating portion 402 of the second swing arm 420 may also be provided with reference to the above-described technical solutions. Of course, the size and the positional relationship of the first rotating portion 401 and the second rotating portion 402 disposed on the second swing arm 420 may be the same as or different from the size and the positional relationship of the first rotating portion 401 and the second rotating portion 402 disposed on the first swing arm 410, and the disclosure is not limited thereto.

In order to further improve the stability of the fitting relationship between the first swing arm 410 and the second swing arm 420 and the base 100, optionally, as shown in the figure, at least one of the first swing arm 410 and the second swing arm 420 is provided with two second rotating portions 402, and at least one first rotating portion 401 is provided between the two second rotating portions 402. Because the spacing opposite direction that first rotation portion 401 and second rotation portion 402 applyed to first swing arm 410 is opposite, consequently, through adopting above-mentioned technical scheme, all be provided with the circumstances of second rotation portion 402 in the both sides of the back of the body of first rotation portion 401, can further prevent the circumstances that appears inclining each other between first swing arm 410 and the base 100, promote the cooperation stability between first swing arm 410 and the base 100. In order to ensure that the stability of the fit among the components in the whole folding mechanism is relatively good, the first swing arm 410 and the second swing arm 420 can both adopt the above technical scheme.

Further, taking the first swing arm 410 as an example, in the first swing arm 410, the first rotating portion 401 is provided with a fitting groove, the second rotating portion 402 is provided with a fitting protrusion, and the fitting groove and the fitting protrusion are both provided with arc-shaped fitting surfaces. Correspondingly, by means of etching, drilling, or the like, the base portion 100 may be formed with a fitting groove and a fitting protrusion having an arc-shaped fitting surface, so that the fitting groove and the fitting protrusion formed on the base portion 100 are used as at least a part of each of the third rotating portion 110 and the fourth rotating portion 120, and are used for being respectively and correspondingly fitted with the first rotating portion 401 and the second rotating portion 402, thereby achieving the rotation fitting of the first swing arm 410 and the base portion 100, and simultaneously, enabling the first swing arm 410 and the base portion 100 to be mutually limited in a direction perpendicular to the extending direction of the base portion 100.

Under the condition of adopting the above structure, in order to ensure that the first swing arm 410 can normally form a matching relationship with the base 100, each matching groove needs to be provided with a notch, so that the corresponding structure in the first swing arm 410 extends into the matching groove from the notch of the matching groove on the base 100, and meanwhile, the corresponding structure on the base 100 can also extend into the matching groove through the notch of the matching groove on the first swing arm 410, thereby achieving the purpose of rotationally connecting the first swing arm 410 and the base 100.

Alternatively, the positional relationship between the mating projection and the notch of the mating groove may be adapted. As shown, in the first swing arm 410, the fitting projection may be provided on a side of the fitting groove facing away from the notch thereof, and in the base 100, the fitting projection may be provided on a side of the fitting groove facing the notch thereof. With the above technical solution, the space occupied by the third rotating part 110 and the fourth rotating part 120 on the base 100 can be greatly reduced, and the difficulty and the workload of forming the third rotating part 110 and the fourth rotating part 120 can also be reduced to some extent.

Alternatively, as shown in fig. 6 to 8, the folding mechanism provided in the embodiment of the present application may further include a first connecting shaft 610 and a second connecting shaft 620, and both the first connecting shaft 610 and the second connecting shaft 620 are rotatably mounted on the base 100. Specifically, a structure such as a mounting groove for mounting the first connecting shaft 610 and the second connecting shaft 620 may be provided on the base 100, and the first connecting shaft 610 and the second connecting shaft 620 may be rotatably mounted in the mounting groove or the like, so that the first connecting shaft 610 and the second connecting shaft 620 can both form a rotation fit relationship with the base 100. Also, the first connection shaft 610 and the second connection shaft 620 may be spaced apart from each other to prevent interference therebetween as much as possible during rotation.

Meanwhile, the third swing arm 430 is in limit fit with the first connecting shaft 610 in the rotating direction of the first swing arm 410, and the fourth swing arm 440 is in limit fit with the second connecting shaft 620 in the rotating direction, so that when the third swing arm 430 rotates, the first connecting shaft 610 can be driven to rotate together, and when the fourth swing arm 440 rotates, the second connecting shaft 620 can be driven to rotate together. Specifically, the third swing arm 430 may be sleeved on the first connecting shaft 610, and the fourth swing arm 440 may be sleeved on the second connecting shaft 620, and the interference fit relationship is formed by corresponding the two sets of components, so that the third swing arm 430 and the first connecting shaft 610 rotate synchronously, and the fourth swing arm 440 and the second connecting shaft 620 rotate synchronously. In another embodiment of the present application, a limit fitting relationship may be formed between the third swing arm 430 and the first connecting shaft 610 through a key connection manner, and correspondingly, a limit fitting relationship may be formed between the fourth swing arm 440 and the second connecting shaft 620 through a key connection manner, which may further improve stability of the limit fitting relationship.

Based on the above technical content, further, the first connecting shaft 610 and the second connecting shaft 620 are connected by a gear synchronizing mechanism, the gear synchronizing mechanism may include two gears, the two gears are engaged with each other and respectively connected with the first connecting shaft 610 and the second connecting shaft 620, so that the first connecting shaft 610 and the second connecting shaft 620 form a transmission connection relationship. Moreover, based on the connection relationship between the first connection shaft 610 and the first housing seat 210 and the connection relationship between the second connection shaft 620 and the second housing seat 220, the first housing seat 210 and the second housing seat 220 can also rotate synchronously through the gear synchronization mechanism. Under the condition of adopting the technical scheme, the capability of synchronous rotation between the first screen supporting plate 310 and the second screen supporting plate 320 can be ensured, so that no matter which one of the first screen supporting plate and the second screen supporting plate is driven, the other one can be driven to rotate relative to the base part 100 through a gear synchronous mechanism and the like, the rotation angles of the first screen supporting plate 310 and the second screen supporting plate 320 relative to the base part 100 are always the same, and the comprehensive performance of the whole folding mechanism is improved.

In another embodiment of the present application, as shown in the figures, optionally, the gear synchronization mechanism includes a first gear 631, a second gear 632, a first engaging tooth 633 provided on the first connecting shaft 610, and a second engaging tooth 634 provided on the second connecting shaft 620, the first engaging tooth 633 is engaged with the first gear 631, the first gear 631 is engaged with the second gear 632, and the second gear 632 is engaged with the second engaging tooth 634. When the technical scheme is adopted, the diameters of all parts in the gear synchronizing mechanism can be relatively small, so that the space occupied by the gear synchronizing mechanism in the folding mechanism is reduced as much as possible, and the purpose of improving the utilization rate of the internal space of the electronic equipment is finally achieved.

Specifically, the first connecting shaft 610 and the first engaging teeth 633 may constitute a gear shaft, and correspondingly, the second connecting shaft 620 and the second engaging teeth 634 may also constitute a gear shaft, and since the rotation angle of each of the first housing base 210 and the second housing base 220 with respect to the base 100 is generally not greater than one, the first engaging teeth 633 may cover a quarter-turn to a half-turn on the first connecting shaft 610, and correspondingly, the second engaging teeth 634 may cover a quarter-turn to a half-turn on the second connecting shaft 620, which substantially ensures that the first engaging teeth 633 and the second engaging teeth 634 can provide reliable synchronization, and the production cost can be reduced. Of course, in order to maximize the reliability of the gear synchronizing mechanism, the first connecting shaft 610 may be completely covered with the first engaging teeth 633 in the circumferential direction, and the second connecting shaft 620 may also be completely covered with the second engaging teeth 634 in the circumferential direction.

More specifically, can set up the installation axle on the base, and make first gear 631 and second gear 632 all overlap and establish on the installation axle that corresponds, guarantee folding mechanism during operation, the position of first gear 631 and second gear 632 can not change, and then provides reliable and stable transmission. Or, the gear synchronizing mechanism may further be provided with a gear bracket 640, the gear bracket 640 may be provided with a gear shaft, and the gear bracket 640 may be mounted on the base 100 by a connector such as a screw, thereby reducing the processing difficulty of the base 100. Of course, the gear holder 640 may be provided with a shaft hole, in this case, the first gear 631 and the second gear 632 may be both shaft gears, that is, both gear shafts may be provided, and the first gear 631 and the second gear 632 may be stably assembled with the base 100 by rotatably mounting the respective gear shafts of the first gear 631 and the second gear 632 in the shaft hole of the gear holder 640.

Optionally, in a specific embodiment of the present application, the folding mechanism may further include a first cam sleeve 651, a second cam sleeve 652 and an elastic member 660, the first cam sleeve 651 and the second cam sleeve 652 are sleeved on the first connecting shaft 610, the first cam sleeve 651 is fixed on the third swing arm 430, the second cam sleeve 652 is rotatably engaged with the first connecting shaft 610 in a rotating direction of the first swing arm 410, and the elastic member 660 is in a stretched state or a contracted state when the first cam sleeve 651 and the second cam sleeve 652 are relatively rotated.

Specifically, the first cam sleeve 651 and the second cam sleeve 652 may have the same specific structure and are arranged in a snap-fit manner, and during the relative rotation of the first cam sleeve 651 and the second cam sleeve 652, the maximum spacing between the first cam sleeve 651 and the second cam sleeve 652 may be larger than the initial spacing (i.e., the minimum spacing) therebetween, in which case the elastic member 660 may be stretched or compressed, so that the elastic member 660 can apply an elastic restoring force to the first cam sleeve 651 and/or the second cam sleeve 652 to promote the first cam sleeve 651 and the second cam sleeve 652 to return to the snap-fit state, i.e., the state in which the spacing therebetween is minimum.

By adopting the above technical solution, the relative position between the first cam sleeve 651 and the second cam sleeve 652 in the engaged state can be designed, so that when the folding mechanism is in the folded state and the unfolded state, both the first cam sleeve 651 and the second cam sleeve 652 are in the engaged state, and therefore, as long as the folding mechanism is in the unfolded state and the unfolded state, the first cam sleeve 651 and the second cam sleeve 652 are relatively rotated, the distance between the first cam sleeve 651 and the second cam sleeve 652 is increased, and the elastic member 660 is stretched or compressed. Therefore, under the condition of adopting the technical scheme, the folding mechanism can be easily kept in the unfolding state and the folding state by the elastic part 660, and the unfolding state or the folding state of the folding mechanism can be prevented from being damaged by small external force, so that inconvenience is brought to the use of a user.

Optionally, the folding mechanism further comprises a mounting member 673, and the mounting member 673 is fixed on the base 100, specifically, the mounting member 673 can be fixed on the base 100 by welding or connecting member connection. The mounting member 673 is provided with a first limiting member 671 and a second limiting member 672 which are opposite and fixed along the rotation axis of the second rotation portion 402, a first cam sleeve 651, a second cam sleeve 652 and an elastic member 660 are arranged between the first limiting member 671 and the second limiting member 672, and the elastic member 660 is arranged on one side of the second cam, which is far away from the first cam. Under the condition of adopting the above technical scheme, the first limiting member 671 and the second limiting member 672 can provide the function of positioning foundation, on one hand, the reliability of the elastic member 660 can be improved, and on the other hand, the installation difficulty of the elastic member 660 can be reduced.

In the case of the above-described solution, the relative rotation between the first cam sleeve 651 and the second cam sleeve 652 compresses the elastic member 660, so that the elastic member 660 applies an elastic force to the first cam sleeve 651 and the second cam sleeve 652 to urge the first cam sleeve 651 and the second cam sleeve 652 to return to their original positions. In order to further prevent the problem that the folding mechanism is difficult to maintain in the folded state and the unfolded state, the elastic element 660 may be pre-stressed, that is, the elastic element 660 may be in a compressed state while the first cam sleeve 651 and the second cam sleeve 652 are engaged with each other.

Specifically, the first cam sleeve 651 and the third swing arm 430 may be connected to each other by welding or integral molding, and the third swing arm 430 may be in a position-limiting fit relation with the first connecting shaft 610 through the first cam sleeve 651 in the rotation direction of the second rotating portion 402. More specifically, the first cam sleeve 651 and the first connecting shaft 610 may be connected to each other by a key connection, and the inner circumferential surface of the second cam sleeve 652 may have a circular configuration so as to ensure that the second cam sleeve 652 can normally rotate relative to the first connecting shaft 610, but in order to prevent the second cam sleeve 652 from rotating together with the first connecting shaft 610 along with the first cam sleeve 651 during the rotation of the first connecting shaft 610 with the third swing arm 430, the second cam sleeve 652 may be brought into limit-fit with the base 100 in the rotation direction of the second rotating portion 402.

In addition, the first limiting member 671, the second limiting member 672 and the mounting member 673 can be formed by integral molding, so as to improve the stability of the connection relationship among the three members. The first limiting member 671 and the second limiting member 672 can be provided with matching holes, and two opposite ends of the first connecting shaft 610 and the second connecting shaft 620 are respectively matched with the first limiting member 671 and the second limiting member 672. More specifically, the fitting holes may be through holes, and the first connecting shaft 610 and the second connecting shaft 620 may both penetrate out of the first limiting member 671 and the second limiting member 672, and then, by means of structures such as the snap spring 674 and the like, the first connecting shaft 610 and the second connecting shaft 620 may both form a stable rotation fitting relationship with the mounting member 673. The first gear 631 and the second gear 632 may also be rotatably mounted on the first limiting member 671 or the second limiting member 672 through a gear shaft or the like, so that the first gear 631 and the second gear 632 can be stably in transmission fit with the first meshing teeth 633 and the second meshing teeth 634.

Alternatively, the third swing arm 430 and the fourth swing arm 440 are each fixed with a first cam sleeve 651, and each first cam sleeve 651 is provided with a second cam sleeve 652 and an elastic member 660. That is, in the case where the folding mechanism is in the unfolded and folded states, both the side where the third swing arm 430 is located and the side where the fourth swing arm 440 is located may be subjected to the elastic force of the elastic member 660, which may prevent the folding mechanism from being separated from the unfolded and folded states, thereby improving the ability of the folding mechanism to stably maintain the unfolded and folded states. Of course, in both the third swing arm 430 and the fourth swing arm 440, a plurality of sets of the first cam sleeve 651, the second cam sleeve 652 and the elastic member 660 can be provided to cooperate with each other to further enhance the ability of the folding mechanism to maintain the folded state and the unfolded state.

As described above, by making the second cam sleeve 652 in a position-restricting relationship with the base 100 and the like as required, it is possible to prevent the second cam sleeve 652 from rotating with the first cam sleeve 651 when the first cam sleeve 651 is rotated, and to prevent the first cam sleeve 651 and the second cam sleeve 652 from being unable to move axially. In view of the above, in the case where the first cam sleeve 651 is provided to both the third swing arm 430 and the fourth swing arm 440, as shown in the drawing, the connecting rod 653 may be provided between the second cam sleeves 652 that are respectively fitted to the two first cam sleeves 651 in one-to-one correspondence. In this case, on one hand, the second cam sleeves 652 can be mounted on the first connecting shaft 610 and the second connecting shaft 620 together, so that the assembly difficulty is reduced, on the other hand, the two second cam sleeves 652 can have the capability of synchronous operation, so that the capability of keeping the folding mechanism in the folded state and the unfolded state is further improved, and in addition, the two second cam sleeves 652 are connected through the connecting rod 653, so that in the process of designing and assembling the second cam sleeves 652, a limit structure does not need to be separately configured for the second cam sleeves 652, under the combined action of the connecting rod 653 and the two second cam sleeves 652, the second cam sleeves 652 can rotate relative to the first connecting shaft 610 and the second rotating shaft, and the second cam sleeves 652 can basically be ensured not to rotate along with the rotation of the first cam sleeves 651.

In order to improve the reliability of the connection relationship between the first housing base 210 (and the second housing base 220) and the base 100, as shown in fig. 2, the number of the swing arm assemblies may be plural, plural swing arm assemblies are distributed along the axial direction of the first swing arm 410, and any two adjacent swing arm assemblies may be arranged at intervals along the aforementioned rotational axial direction in order to prevent mutual interference between the swing arm assemblies as much as possible. Specifically, the number of the swing arm assemblies can be two, three or more, and the swing arm assemblies which are symmetrically arranged in the plurality of swing arm assemblies can be enabled to ensure that the whole folding mechanism has reliable folding performance.

As described above, the specific structures of the corresponding components in the folding mechanism may be symmetrically arranged, and further, as shown in fig. 6, in the assembled folding mechanism, the first swing arm 410 and the second swing arm 420 may be made to be opposite, and the third swing arm 430 and the fourth swing arm 440 may be made to be opposite. Specifically, in the case that the first swing arm 410 and the second swing arm 420 have symmetrical structures, the first swing arm 410 and the second swing arm 420 can be oppositely installed on the base 100 by disposing the third rotating portion 110 and the fourth rotating portion 120 on opposite sides of the base 100 and respectively matching with the first swing arm 410 and the second swing arm 420. Correspondingly, the assembly process of the third swing arm 430 and the fourth swing arm 440 can also be designed and installed with reference to the first swing arm 410 and the second swing arm 420. Through adopting above-mentioned technical scheme, can greatly promote folding mechanism's symmetry, and then promote folding mechanism's folding and expansion performance, and can make the synchronism of first screen backup pad 310 and second screen backup pad 320 better, promote the support effect to flexible display screen.

As described above, the third screen support plate 330 and the base 100 can move relatively, and optionally, the base 100 is provided with the receiving groove 130 concavely disposed along the supporting direction, and the third movable support plate is movably mounted in the receiving groove 130. Under the condition of adopting the above technical solution, when the folding mechanism is in the unfolded state, the third screen support plate 330 may be located in the accommodating groove 130 of the base 100, and the screen support surface of the third screen support plate 330 is flush with the surface of the base 100 facing the flexible screen, so as to jointly provide a support function for the flexible screen; when the folding mechanism is in the folded state, the third screen support plate 330 can be received in the receiving groove 130 when the third screen support plate 330 moves closer to the portion of the base 100 facing the third screen support plate 330 (i.e., the receiving groove 130 above). Obviously, by adopting the above-mentioned technique, the maximum size and the minimum size of the combined structure of the third screen supporting plate 330 and the base 100 can be made not to be different greatly, thereby minimizing the waste of space in the electronic device. Of course, in different situations, when the folding mechanism is in the unfolded state, the third screen supporting plate 330 may also extend out from the accommodating groove 130 and support the flexible screen, which is not limited herein.

As described above, the driving source of the third screen support plate 330 moving in the supporting direction comparable to the base 100 may be various, and in order to ensure that the third screen support plate 330 can provide a reliable supporting function for the flexible screen, optionally, the third screen support plate 330 is supported at the first end of the first swing arm 410 and the first end of the second swing arm 420 with the folding mechanism in the unfolded state. That is, as shown in fig. 16 and 17, during the process that the first swing arm 410 and the second swing arm 420 rotate and flatten with respect to the base 100, the first swing arm 410 and the second swing arm 420 can be engaged with the third screen support plate 330 at a certain point of time, so that as the first swing arm 410 and the second swing arm 420 continue to perform the flattening motion, the third screen support plate 330 can move in a direction away from the portion (such as the accommodating groove 130 mentioned above) of the base 100 opposite to the third screen support plate 330, and the third screen support plate 330 is just supported at the corresponding area of the flexible screen when the first swing arm 410 and the second swing arm 420 flatten.

Based on the above embodiment, further, in order to enable the third screen support plate 330 to return to the original position more easily in the process of switching the folding mechanism from the unfolded state to the folded state, the original position is the position where the third screen support plate 330 is located after moving to be close to the base 100 by the preset distance, optionally, as shown in fig. 5, the folding mechanism may further include an elastic reset piece 340, the elastic reset piece 340 may specifically be a spring or a rubber elastic piece 660, and the like, the elastic reset piece 340 is connected between the third screen support plate 330 and the base 100, and in the case that the folding mechanism is in the unfolded state, the elastic reset piece 340 is in the stretching state, so that when the first swing arm 410 and the second swing arm 420 relatively rotate from the unfolded state, the third screen support plate 330 may move to be close to the base 100 under the action of the elastic reset piece 340. Under the condition of adopting above-mentioned technical scheme, can also prevent that the flexible screen from receiving the extrusion by mutual interference with third screen backup pad 330 in the in-process of being folded, promote the life of flexible screen.

Based on the folding mechanism provided in any of the above embodiments, an embodiment of the present application further provides an electronic device, which includes a flexible screen, a first housing, a second housing, and any of the above folding mechanisms, where the first housing is fixedly connected to the first housing seat 210, the second housing is fixedly connected to the second housing seat 220, and the flexible screen is disposed on the first housing, the second housing, the first screen support plate 310, the second screen support plate 320, and the third screen support plate 330. Of course, the electronic device may further include a main board, a camera, a microphone, a receiver, and other electronic devices, which will not be described in detail herein in view of brevity of the text.

The electronic device disclosed in the embodiment of the application can be a mobile phone, a computer, an electronic book reader, a wearable device and the like, and the embodiment of the application does not limit the specific type of the electronic device.

The electronic device disclosed in the embodiment of the application can be a mobile phone, a computer, an electronic book reader, a wearable device and the like, and the embodiment of the application does not limit the specific type of the electronic device.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Further, it should be noted that the scope of the methods and apparatus of the embodiments of the present application is not limited to performing the functions in the order illustrated or discussed, but may include performing the functions in a substantially simultaneous manner or in a reverse order based on the functions involved, e.g., the methods described may be performed in an order different than that described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.

While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (9)

1. A connecting structure for connecting a first structural member and a second structural member which can slide relatively and are matched in a rotating way is characterized in that the first structural member comprises a first sliding block and a second sliding block which are arranged at intervals along a first direction,

the connecting structure comprises a sliding part and a track body, the sliding part comprises a first sliding part and a second sliding part, the first sliding part is arranged on the first sliding block, the second sliding part is arranged on the second sliding block, and the first sliding part and the second sliding part are arranged at intervals along the first direction;

the track body can be fixed in the second structure, the track body includes first spacing portion and the spacing portion of second, first spacing portion with the spacing portion of second is followed first direction distributes, first spacing portion with at least one of the spacing portion of second is equipped with the equipment breach, the slider passes through the equipment breach with the track body coupling, first sliding part with first spacing portion sliding fit, the second sliding part with the spacing portion sliding fit of second.

2. The connection according to claim 1, wherein the end of the first sliding portion facing the second sliding portion and/or the end of the second sliding portion facing the first sliding portion is provided with an arc-shaped guide end.

3. The connecting structure according to claim 1, wherein projections of the first sliding portion and the second sliding portion coincide in the first direction.

4. The connecting structure according to claim 3, wherein the first stopper portion has a first raceway surface, the second stopper portion has a second raceway surface, and a projection of the first raceway surface is located outside a projection of the second raceway surface in the first direction.

5. The connecting structure according to claim 4, wherein the rail body further includes a spacer, the first stopper portion is located on one side of the spacer, the second stopper portion is located on the other side of the spacer, and the spacer is positioned between the first sliding portion and the second sliding portion in the first direction.

6. The connecting structure according to claim 5, wherein the first limiting portion protrudes in a direction away from the second limiting portion relative to the spacer to form the first track surface, the first limiting portion is provided with a hollow cavity, and a cavity opening of the hollow cavity faces in the direction of the second limiting portion along the first direction.

7. A movable mechanism comprising a first structural member, a second structural member and the connecting structure of claim 6, wherein the first structural member comprises a first slide block and a second slide block which are arranged at intervals along a first direction, and the first structural member is connected with the second structural member through the connecting structure, so that the first structural member and the second structural member can slide relatively and are matched in a rotating mode.

8. The movable mechanism according to claim 7, wherein the first track surface is located on a side of the first position-limiting portion facing away from the second structural member, and the second track surface is located on a side of the second position-limiting portion facing toward the second structural member;

the second structure has the holding surface, the second structure is equipped with the hole of stepping down, in the perpendicular to in the direction of holding surface, the projection of the spacing portion of second is located in the hole of stepping down.

9. A movement mechanism comprising a first structure member, a second structure member and a linkage according to any of claims 1 to 5, wherein one end of the first structure member comprises first and second slides spaced apart in a first direction, and the first structure member is connected to the second structure member by the linkage such that the first and second structure members are slidably and rotatably engaged with each other.

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