CN110617269A - Flexible structure and assembly with same - Google Patents

Abstract

The invention relates to a flexible structure, which comprises a front section, a middle section and a rear section, wherein two lateral protrusions are arranged at intervals on the front section and the middle section, front and rear guide ways are arranged laterally on the middle section and the rear section, the two lateral protrusions of the two sections are respectively guided into the front guide ways to form relative movement, and the front guide ways of the rear section are also provided with communicated branch guide ways for guiding one lateral protrusion of the front section into the front guide way of the rear section to form relative movement, so that after the lateral protrusions of the front section are moved along the branch guide ways to rotate into the front guide ways of the rear section, the other lateral protrusion of the middle section is continuously driven to move along the front guide ways of the rear section, and the front section and the middle section are sequentially turned over relative to the rear section; in addition, at least two flexible structures are matched with the two end parts of the base and the at least one intermediate connector, so that an assembly with a flexible structure is formed.

Description

Flexible structure and assembly with same

Technical Field

The invention relates to a flexible structure and a combined body with the flexible structure, which can be arranged in an electronic device, so that the electronic device can be switched between a flat state and a bent state, wherein the flat state is used for a user to operate as a handheld electronic device (such as a smart phone, a tablet computer and the like), the bent state is also used for a user to operate as a folding electronic device (such as a notebook computer) and the combined body can be bent to a folded state for storage and carrying.

Background

In a general handheld electronic device, a large-sized screen is continuously favored by users, and a flexible display device (flexible display device) developed in recent years makes a foldable handheld electronic device equipped with a flexible display device become one of items that a person skilled in the art is interested to be developed, for example, a structure disclosed by a hinge module for a flexible display device (2016, 8/24/2016) of the patent publication No. CN103228114B of the people's republic of china includes a plurality of hinge bodies, a guide shaft, a connecting lever and an angle keeping device, wherein the hinge body further includes a first main hinge body, a second main hinge body and a plurality of link bodies, the link bodies are respectively disposed between the first and second main hinge bodies through respective guide shafts matching with a shaft hole and a pair of guide holes of the connecting lever, the angle maintaining device further comprises a plate spring and an elastic component, wherein one part of the sliding plate is fixed on the first main hinge body through the sliding plate connected with the plate spring, the other part of the sliding plate is arranged on the second main hinge body in a sliding way, and the elastic component is matched to limit the position movement of the plate spring, so that a certain bending angle is maintained when the flexible display device is bent.

However, in the above patent document, the link bodies of the plurality of hinge bodies do not provide the effect of sequentially turning, and therefore, any link body is easily floated during the bending process, and the operation of other adjacent link bodies is disturbed.

Disclosure of Invention

The invention aims to provide a flexible structure, which can enable three continuous sections to form the effect of sequential turning, and the guide ways with different circumferential paths are arranged on the last section of the three sections, so that the lateral convex part of the first section and the lateral convex part of the middle section are respectively guided in to form the locking effect, thereby the flexible structure is required to be turned over from the first section in sequence during the bending process, and is reversely and sequentially turned back to the original position during the reversely flattening process, thereby the sections in the flexible structure are prevented from being randomly floated to ensure smooth action, and in addition, the effect of multi-section positioning can be further provided, and each section can be ensured to be sequentially turned over during the turning process.

Another objective of the present invention is to provide an assembly with a flexible structure, which mainly employs at least two of the above-mentioned modularized flexible structures, and matches with two end bases and at least one middle connector, besides the advantages of the above-mentioned flexible structures, it can be convenient to flexibly connect, reduce components and increase application range in design and assembly according to the size type of the matched flexible display device, and in addition, the side edges of the end bases are contacted with each other in time, so that the magnetic attraction pieces are magnetically attracted to each other to form positioning.

To achieve the above object, the present invention provides a flexible structure comprising: the front section is provided with two lateral protrusions at intervals on one side; the middle section is provided with two lateral convex parts at intervals on one side, and a front guide way and a rear guide way are arranged on the middle section in a laterally penetrating way so that the two lateral convex parts of the front section can be respectively guided in and form relative movement; the lateral direction of the rear section is provided with a front guide way and a rear guide way so that the two lateral convex parts of the middle section can be respectively guided in and can relatively move, and the front guide way of the rear section is also provided with a communicated branch guide way so that one lateral convex part of the front section can be guided in and can relatively move; thereby, after the lateral projection of the front section moves along the branch approach and turns into the front approach of the rear section, the other lateral projection of the middle section is successively moved along the front approach of the rear section, so that the front section and the middle section are sequentially turned over relative to the rear section.

In order to achieve still another object of the present invention, there is provided a combination having a flexible structure, including: two flexible structures parallel to each other, said flexible structures being as described above; two end bases which are parallel to each other, wherein the two opposite ends of one end base are respectively connected with one end section of the two flexible structures, the two opposite ends of the other end base are respectively connected with the other end section of the two flexible structures, and the side edges of the end bases are respectively provided with a magnetic attraction piece; and at least one intermediate connector parallel between the two end mounts, opposite ends of the at least one intermediate connector being connected to at least one intermediate section of the two flexible structures, respectively; therefore, the two flexible structures can synchronously carry out state conversion between the flattening shape and the bending shape, and in addition, the side edges of the end part bases are contacted with each other in time, so that the magnetic parts are mutually magnetically attracted to form positioning.

The features of the above-described solution and other additional features depending on the above-described solution, together with the advantages which these features have, will limit the detailed description below, in order to provide a more thorough understanding of the present invention.

Drawings

FIG. 1 is an exploded schematic view of a first embodiment of the flexible structure of the present invention.

Fig. 2 is an exploded schematic view of a second embodiment of the flexible structure of the present invention.

FIG. 3 is an exploded schematic view of a second embodiment of the flexure mechanism of the present invention implemented using a plurality of intermediate segments.

FIG. 4 is another exploded view of a second embodiment of the flexure mechanism of the present invention implemented using a plurality of intermediate segments.

Fig. 5 is a schematic view of the assembly of fig. 3.

Fig. 5-1 is a schematic view of the constituent members of one side of the flexible structure of fig. 5.

Fig. 5-2 is a side view of fig. 5-1.

Fig. 6 is a schematic view of the action of turning up the front section in the first order in the flexible structure of fig. 5.

Fig. 6-1 is a schematic view of the action of turning up the leading segment in the first order in the flexible structure of fig. 5-1.

Fig. 6-2 is a side view of fig. 5-2.

Fig. 7 is a schematic view of the sequential turning up of the intermediate sections in the second order in the flexible structure of fig. 6.

Fig. 7-1 is a schematic view of the sequential turning up of the intermediate sections in the second order in the flexible structure of fig. 6-1.

Fig. 7-2 is a side view of fig. 6-2.

Fig. 8 is a schematic view of the sequential turning up of the intermediate sections in the third order in the flexible structure of fig. 7.

Fig. 8-1 is a schematic view of the sequential turning up of the intermediate sections in the third order in the flexible structure of fig. 7-1.

Fig. 8-2 is a side view of fig. 7-2.

Fig. 9 is a schematic view of the sequential turning up of the intermediate sections in the fourth order in the flexible structure of fig. 8.

Fig. 9-1 is a schematic view of the sequential flipping action of the intermediate segments in the fourth order in the flexible structure of fig. 8-1.

Fig. 9-2 is a side view of fig. 8-2.

Fig. 10 is a schematic view of the sequential turning up of the intermediate section in the fifth order in the flexible structure of fig. 9.

Fig. 10-1 is a schematic view of the sequential flipping action of the intermediate segments in the fifth order in the flexible structure of fig. 9-1.

Fig. 10-2 is a side view of fig. 9-2.

Fig. 11, 11-1 and 11-2 are schematic cross-sectional views of a second embodiment of a flexure mechanism of the present invention in a flattened state, an anterior segment flipped-up state and a flexed state, respectively.

Fig. 12, fig. 13 and fig. 14 are schematic views of different embodiments of the assembly with a flexible structure according to the present invention.

Detailed Description

As shown in fig. 1 to 10, X, Y, Z is added to the drawings, and two opposite directions of X, Y, Z in the axial direction are further subdivided into a front direction, a rear direction, a left direction, a right direction, a top direction, a bottom direction and the like, wherein the three axial arrows are directed to the front direction, the right direction, the top direction and the like, for convenience of explanation, one side or the other side of each component member described in the following text may represent the right side, and the opposite side of each component member may represent the left side.

Referring to fig. 1, the present invention provides a flexible structure 51 including a front segment 10, a middle segment 20 and a rear segment 30, wherein the rear segment 30 and the front segment 10 are respectively connected to organisms, and two consecutive segments are sequentially turned with respect to a third segment during turning of one of the organisms into a bent state or a flattened state with respect to the other organism, and the flexible structure 51 of the present invention is characterized by comprising: two lateral protrusions 11, 12 are arranged on one side of the front segment 10 at intervals; two lateral protrusions 21 and 22 are arranged on one side surface of the middle section 20 at intervals, and a front guide channel 23 and a rear guide channel 24 are arranged on the middle section 20 in a laterally penetrating manner so that the two lateral protrusions 11 and 12 of the front section 10 can be respectively guided in and form relative movement; the rear segment 30 is provided with a front guide channel 33 and a rear guide channel 34 at the lateral sides thereof for the two lateral protrusions 21 and 22 of the middle segment 20 to respectively guide and make relative movement, the front guide channel 33 of the rear segment 30 is also provided with a branch guide channel 35 communicated with each other for one lateral protrusion 12 of the front segment 10 to guide and make relative movement; thereby, the lateral protrusion 12 of the first turned front segment 10 moves along the branch approach 35 to the connection of the two approaches 33, 35, and then turns to enter the front approach 33 of the rear segment 30, and then the middle segment 20 is sequentially turned over and the other lateral protrusion 21 of the middle segment 20 moves along the front approach 33 of the rear segment 30, so that the two consecutive segments, i.e. the front segment 10 and the middle segment 20, can be sequentially turned over with respect to the rear segment 30; conversely, after the other lateral projection 21 of the intermediate segment 20 returns, the lateral projection 12 of the front segment 10 can turn into the branch approach 35 to return to the original position, so that the intermediate segment 20 and the front segment 10 are sequentially returned back with respect to the rear segment 30.

In the first embodiment, the technical means adopted by the present invention is to make the front guide 23 and the rear guide 24 of the middle section 20 respectively located on a first circumferential path, make both the lateral protrusions 11, 12 of the front section 10 move along the first circumferential path, make the front guide 33 and the rear guide 34 of the rear section 30 respectively located on a second circumferential path, make both the lateral protrusions 21, 22 of the middle section 20 move along the second circumferential path, and make the branch guide 35 of the rear section 30 located on a third circumferential path, so that when the first and third circumferential paths are overlapped, the rear guide 24 of the middle section 20 and the branch guide 35 of the rear section 30 are aligned with each other, and make the front stop end of the rear guide 24 of the middle section 20 just correspond to the connection of the front guide 33 and the branch guide 35, during the subsequent turning process, the lateral protrusion 12 of the front section 10 abuts against the front stop end of the rear guide channel 24 of the middle section 20, so that the middle section 20 is pulled and rotated, and the rear guide channel 24 of the middle section 20 is staggered (separated) from the branch guide channel 35 of the rear section 30 until the lateral protrusion 12 of the front section 10 abuts against the front stop end of the front guide channel 33 of the rear section 30.

In addition, the intermediate section 20 can be implemented in a plurality of pieces, that is, based on the above technical means, the intermediate section 20 can be designed into a modular structure, so that the flexible structure of the present invention can be implemented in more than three pieces, for example, a plurality of intermediate sections 20 can be installed between the front section 10 and the rear section 30 as shown in fig. 3 to 10-2, and the front section 10 and the plurality of intermediate sections 20 can be sequentially turned over by further connecting a branch approach to the front approach 23 of the intermediate section 20 and laterally penetrating the branch approach through the intermediate section 20; furthermore, the present invention further provides a front approach and a rear approach laterally to the front section 10, the front approach 13 further connects with a branch approach which is communicated with the front section 10, and the branch approach laterally penetrates the front section 10, so that the front section 10, the middle section 20 and the rear section 30 form a same modular structure, for example, as shown in the three sections located in the third to fifth orders; therefore, the present invention can also select and use three consecutive segments shown in the figures, for example, three segments of the first to third orders, the second to fourth orders, the third to fifth orders, and the fourth to sixth orders, so as to form the flexible structure of the first embodiment of the present invention.

Secondly, in order to stabilize the operation and share the load to increase the guiding and supporting function, so as to ensure the efficacy of sequentially turning over the multiple segments, the rear segment 30 of the present invention is further laterally provided with an auxiliary guide 36 and an auxiliary branch guide 37 which are communicated with each other, so as to allow the other lateral protrusion 11 of the front segment 10 to be guided in and form a relative movement, the auxiliary guide 36 and the auxiliary branch guide 37 are respectively located on a fourth circumferential path and a third circumferential path, so that the auxiliary branch guide 37 and the branch guide 35 are respectively located on the same circumferential path, the fourth circumferential path and the second circumferential path are concentrically arranged, so that the circumferential path of the auxiliary guide 36 and the circumferential paths of the front and rear two guides 33 and 34 of the rear segment 30 are concentrically arranged, and thus when the first and third circumferential paths are overlapped, namely, when the front guide channel 23 of the middle section 20 and the auxiliary branch guide channel 37 of the rear section 30 are aligned with each other, the other lateral protrusion 11 of the front section 10 can be moved and turned in between the auxiliary branch guide channel 37 and the auxiliary guide channel 36, that is, during the turning into the bent state, the other lateral protrusion 11 of the front section 10 is moved along the auxiliary branch guide channel 37 to the connection of the two guide channels 36, 37, and then turned into the auxiliary guide channel 36, and then moved along the auxiliary guide channel 36, so that the front guide channel 23 of the middle section 20 is staggered (departed) from the auxiliary branch guide channel 37 of the rear section 30, whereas during the turning into the flattened state, the other lateral protrusion 11 of the front section 10 is turned from the auxiliary guide channel 36 into the auxiliary branch guide channel 37 to return to the original position (the rear stop end of the auxiliary branch guide channel 37), and the first and third circumferential paths are overlapped with each other.

As described in the above paragraph, although the auxiliary guide 36 and the auxiliary branch guide 37 are used as auxiliary purposes, since the auxiliary branch guide 37 and the branch guide 35 are located on the same circumferential path, and the circumferential path of the auxiliary guide 36 and the circumferential path of the front guide 33 of the rear section 30 share the same center of rotation (the same center), it can also be used as a main guide purpose in accordance with the actual requirements (for example, no lateral protrusions of other sections are introduced into the branch guide), or when the front guide 33 and the branch guide 35 of the rear section 30 lose their functions, so that the rear guide 34 of the rear section 30 can also be directly used with the auxiliary guide 36 and the auxiliary branch guide 37, and has the same functions, and so on, the intermediate section 20 and the front section 10 are equally applicable and have the same functions, the effect of sequential turning can also be achieved.

In order to provide the flexible structure of the first embodiment with the effect of protecting and concealing the internal structure, the front end portion of the side (right side) of the front section 10 is used as the connecting portion 15 to be embedded into the machine body for fixing, and the receiving space 16 is formed behind the connecting portion 15 to receive and move the front half portion of the middle section 20, the rear end edge of the connecting portion 15 of the front section 10 and the front end edge of the middle section 20 form the corresponding contour shapes, the opposite side (left side) of the middle section 20 is further provided with a lateral step 25a, the lateral step 25a and the two lateral protrusions 21 and 22 are respectively located at the rear end portions of the opposite sides of the middle section 20, the receiving space 26a is formed in front of the lateral step 25a to communicate the front guide channel 23 and the rear guide channel 24 of the middle section 20, and the rear half portion of the front section 10 is received and moved, the front end edge of the lateral step 25a of the middle section 20 and the rear end edge of the front section 10 form mutually corresponding profile shapes, the rear end part of the opposite side of the rear section 30 is also provided with a lateral step 31a, a containing space 32a is formed in front of the lateral step 31a of the rear section 30 so as to communicate the front approach 33 and the rear approach 34 of the rear section 30 and contain and move the rear half part of the middle section 20, the front end edge of the lateral step 31a of the rear section 30 and the rear end edge of the middle section 20 form mutually corresponding profile shapes, and the lateral step 31a is also provided with a connecting part 38 so as to be embedded into another machine body for fixing; borrow this when whole is the exhibition flat form, make the accommodation space of each section can hold half position of adjacent section to form and shield the effect, can reduce whole volume simultaneously again.

Furthermore, in order to increase the stability of the operation and reduce the shaking during the sequential turning process, a fin 27 extends from the rear end surface of the middle section 20, and a guide groove 311 is concavely formed on the front wall surface of the lateral step 31a of the rear section 30 for guiding and forming relative movement of the fin 27, thereby forming a guiding and supporting function to increase the stability of the operation, and particularly facilitating the middle section which is turned up finally; on the other hand, in order to clearly form the segment difference and facilitate the sequential turning of the adjacent segments, the front guide path 33 of the rear segment 30 further includes a basic guide path 331 and a long guide path 332 connected side by side, the long guide path 332 and the branch guide path 35 are disposed on the same reference plane (or on the same side), and the long guide path 332 further has an extension 333 for limiting the moving range of the lateral protrusion 12 of the front segment 10 and the other lateral protrusion 21 of the middle segment 20, respectively, so as to protect the relative sliding and restraining effects between the segments.

As shown in fig. 2 to 11-2, in order to provide the multi-stage positioning effect for each segment, the flexible structure of the present invention further has a second embodiment, which is based on the first embodiment, and further, another lateral step 25b is further provided at the front end portion of the side (right side) of the middle segment 20, and another accommodating space 26b is formed behind the other lateral step 25b to accommodate and move the front half portion of the rear segment 30; at least one positioning hole 251 is formed in the front end surface of the other lateral step 25b of the middle section 20 for accommodating at least one braking member 40, and the rear wall surface of the connecting portion 15 of the front section 10 is formed in a wavy shape and has a plurality of positioning steps 151, so that the at least one braking member 40 is positioned in one of the positioning steps 151, thereby forming multi-stage positioning; at least one positioning hole 311 is further formed in the front end surface of the rear section 30 for accommodating at least one stopper 40, and a plurality of positioning steps 252 are formed in a wavy shape on the rear end surface of the other lateral step 25b of the middle section 20 for positioning the at least one stopper 40 at one of the positioning steps 252, so that a multi-stage positioning is formed; the at least one stopper 40 includes balls and springs to facilitate switching between the positioning steps and positioning at the positioning steps as the wavy wall surface rolls during the sequential turning of each segment, so that the stopper and the positioning hole can be implemented in a plurality of ways as shown in fig. 3 or in a plurality of ways as shown in fig. 4, in addition to being implemented in a single way as shown in fig. 2.

In the second embodiment, after two sets of the first embodiment are symmetrically disposed, two sets of the front segments 10 are connected together to share a connection portion, two sets of the rear segments 30 are combined together to share a connection portion, and a plurality of the middle segments 20 are connected together by a plurality of the other lateral steps 25b to form a flexible structure as shown in fig. 3 or fig. 4, which also has the effect of sequentially turning over.

Furthermore, in order to increase the flexibility of use, such as increasing the size of the flexible display device, the present invention may employ at least two flexible structures 51, which are modular, and are connected to each other by structural connectors to form a flexible structure assembly 50, as shown in fig. 12 to 14, which includes two flexible structures 51 parallel to each other, two end bases 52 parallel to each other, and a plurality of middle connectors 53 parallel to each other; the two flexible structures 51 are disposed symmetrically in the X-axis direction and parallel to each other, the flexible structures 51 are not described in detail, and the two end bases 52 are disposed in the Y-axis direction, so that opposite ends of one end base 52 are respectively connected to one end section of the two flexible structures 51, opposite ends of the other end base 52 are respectively connected to the other end section of the two flexible structures 51, magnetic attraction members 521 are respectively disposed at sides of the end bases 52, the at least one intermediate connecting member 53 is disposed in the Y-axis direction to be arranged in parallel between the two end bases 52, opposite ends of the at least one intermediate connecting member 53 are respectively connected to at least one intermediate section of the two flexible structures 51 to be parallel to the respective end bases 52, thereby matching the dimension of the flexible display device in the Y-axis direction through the two end bases 52 and the at least one intermediate connecting member 53, the two flexible structures 51 can be switched between the flat state and the curved state synchronously to avoid damaging the flexible display device, and the magnetic attraction pieces 521 are magnetically attracted to each other to form positioning when the sides of the end base 52 contact each other.

As described in the above section, the assembly 50 of the present invention, for example, as shown in fig. 12, is formed by arranging a plurality of flexible structures 51 of the second embodiment side by side, and a plurality of connecting intermediate connectors 53 are used between the flexible structures to form a synchronous sequential inversion effect, and for example, as shown in fig. 13 or fig. 14, can also be formed by using two sets (one) of the flexible structures 51 of the first embodiment and a plurality of intermediate connectors 53 are connected between two sets (one) of the flexible structures to form a synchronous sequential inversion effect.

Therefore, the invention has the following advantages:

the flexible structure of the invention is characterized in that the last section of the three successive sections is provided with a guide way with different circumferential paths for the lateral convex part of the first section and the lateral convex part of the middle section to be respectively guided in to form a locking effect, so that the flexible structure must be sequentially turned over from the first section in the bending process, and reversely and sequentially turned back to the original position in the reverse flattening process, thereby preventing the sections in the flexible structure from being randomly floated and ensuring smooth action.

The flexible structure of the invention can also be matched with the front and rear approach channels and the branch approach channels of the sections by additionally arranging the auxiliary approach channel and the auxiliary branch approach channel on each section, and can mutually support in an auxiliary way to stabilize the action, share the load and increase the mutual guiding and supporting functions so as to ensure the effect of orderly overturning a plurality of sections.

The flexible structure of the invention provides a multi-stage positioning effect by respectively arranging the wavy wall surfaces and the making pieces on the front end surface and the rear end surface of the two adjacent sections, so that each section can provide a supporting function in the process of sequentially turning over to easily form a positioning state.

According to the flexible structure, each section is designed into a modular structure, and the lateral steps and the accommodating spaces are matched with each other, so that the flexible structure has the effects of protecting and concealing the internal structure, can reduce the whole volume, and is beneficial to achieving the thinning effect.

The invention is formed by connecting two or more modularized flexible structures in parallel through two end part bases and at least one intermediate connecting body, is convenient for the synchronous state conversion of the flexible structures, can also conform to the size type of flexible display equipment, increases the application range, provides the flexibility in design and assembly, and in addition, the side edges of the end part bases are contacted with each other in time, so that the magnetic parts are magnetically attracted with each other to form positioning.

In summary, the present invention can achieve the intended purpose and has great industrial utility value according to the disclosure, so that the invention patent application is legally proposed; in addition, although the preferred embodiments of the present invention have been disclosed for illustrative purposes, they are not intended to limit the structural features of the present invention, and it will be understood by those skilled in the art that any changes or modifications that are easily conceived are possible within the technical spirit of the present invention and are covered by the claims of the present invention.

Description of the reference numerals

Lateral projections 11, 12 of the front section 10

Front approach 13 and rear approach 14

Connecting portion 15 positioning step 151

Accommodating space 16

Lateral projections 21, 22 of the intermediate section 20

Front approach 23 and rear approach 24

Positioning hole 251 of lateral steps 25a and 25b

Positioning step 252 for accommodating the spaces 26a, 26b

Fin 27

Lateral steps 31a, 31b of the rear segment 30

Guide channel 311 positioning hole 312

Accommodation spaces 32a, 32b

Front approach 33 basic approach 331

Extended section 333 of long approach 332

Rear approach 34 branch approach 35

Auxiliary approach 36 auxiliary branch approach 37

Connecting part 38

Ball 41 of brake 40

Spring 42

Flexible structure 51 of combined body 50 with flexible structure

End base 52 magnetic attraction piece 521

Intermediate connecting piece 53

Claims (12)

1. A flexible structure, comprising:

the front section is provided with two lateral protrusions at intervals on one side;

the middle section is provided with two lateral convex parts at intervals on one side, and a front guide way and a rear guide way are arranged on the middle section in a laterally penetrating way so that the two lateral convex parts of the front section can be respectively guided in and form relative movement; and

the lateral direction of the rear section is provided with a front guide way and a rear guide way so that the two lateral protrusions of the middle section can be respectively guided in and can relatively move, and the front guide way of the rear section is also provided with a branch guide way communicated with each other so that one lateral protrusion of the front section can be guided in and can relatively move;

after the lateral projection of the front section moves along the branch approach to turn into the front approach of the rear section, another lateral projection of the middle section is sequentially driven to move along the front approach of the rear section, so that the front section and the middle section are sequentially turned over relative to the rear section.

2. The flexible structure of claim 1 wherein the leading and trailing approaches of the intermediate section are each located in a first circumferential path; the front approach and the rear approach of the rear section are respectively located in a second circumferential path, and the branch approach of the rear section is located in a third circumferential path, and the first and third circumferential paths are overlapped with each other so that the rear approach of the intermediate section and the branch approach of the rear section are aligned with each other.

3. The flexible structure according to claim 1 or 2, wherein the rear segment is further provided with an auxiliary branch guide and an auxiliary branch guide which are communicated with each other in a lateral direction so as to allow the other lateral protrusion of the front segment to be guided and to be relatively moved, the auxiliary branch guide and the branch guide are respectively located on the same circumferential path, and the circumferential path of the auxiliary branch guide is concentric with the circumferential paths of the front and rear guides of the rear segment, and the front guide of the middle segment and the auxiliary branch guide of the rear segment are aligned with each other so that the other lateral protrusion of the front segment is moved and turned between the auxiliary branch guide and the auxiliary branch guide.

4. The flexible structure of claim 1 wherein said front section is laterally provided with a front approach and a rear approach, said front approach further being connected to a communicating branch approach, said branch approach laterally passing through said front section.

5. The flexible structure of claim 1 wherein the front approach of the intermediate section is further connected to a communicating branch approach extending laterally through the intermediate section.

6. The flexible structure according to claim 1, wherein the front end portion of the side of the front section is a connecting portion, and a receiving space is formed behind the connecting portion to receive and move the front half portion of the middle section; the rear end parts of the opposite sides of the middle section are also provided with lateral steps, so that an accommodating space is formed in front of the lateral steps to communicate the front approach and the rear approach of the middle section, accommodate the rear half part of the front section and enable the rear half part to move.

7. The flexible structure of claim 1, wherein the rear end portions of the opposite sides of said rear section are further provided with lateral steps, and a receiving space is formed in front of said lateral steps to communicate the front and rear approaches of said rear section and to receive and move the rear half of said middle section, said lateral steps being further provided with connecting portions.

8. A flexure mechanism as recited in claim 7 wherein said intermediate section has fins extending from a rear face thereof and said rear section has guide channels recessed in a laterally stepped front face thereof for guiding and allowing relative movement of said fins.

9. The flexible structure of claim 1 or 7, wherein the front approach of the rear section further comprises a basic approach and a long approach connected side by side, the long approach and the branch approach are disposed on the same plane, and the long approach further comprises an extension to limit the range of movement of the lateral protrusion of the front section and the other lateral protrusion of the middle section, respectively.

10. The flexible structure of claim 6, wherein the front end of the side of the middle section is further provided with another lateral step, and another accommodating space is formed behind the other lateral step to accommodate and move the front half of the rear section; the front end of the other lateral step of the middle section is provided with at least one positioning hole for accommodating at least one braking piece, and the rear wall surface of the connecting part of the front section is wavy and provided with a plurality of positioning steps for positioning the at least one braking piece on one of the positioning steps to form multi-stage positioning.

11. The flexible structure of claim 7, wherein the front end of the side of the middle section is further provided with another lateral step, and another accommodating space is formed behind the other lateral step to accommodate and move the front half of the rear section; the front end of the rear section is provided with at least one positioning hole for accommodating at least one braking piece, and the rear end surface of the other lateral step of the middle section is wavy and provided with a plurality of positioning steps, so that the at least one braking piece is positioned on one of the positioning steps to form multi-stage positioning.

12. A combination having a flexible structure, comprising:

two flexible structures parallel to each other, said flexible structures being as described in one of claims 1 to 11;

two end bases which are parallel to each other, wherein the two opposite ends of one end base are respectively connected with one end section of the two flexible structures, the two opposite ends of the other end base are respectively connected with the other end section of the two flexible structures, and the side edges of the end bases are respectively provided with a magnetic attraction piece; and

at least one intermediate link parallel between the two end mounts, opposite ends of the at least one intermediate link being connected to at least one intermediate section of the two flexible structures, respectively; the two flexible structures can synchronously carry out state conversion between the flattening shape and the bending shape, in addition, the side edges of the end part base are mutually contacted in time, and the magnetic parts are mutually magnetically attracted to form positioning.