CN210038608U - Hinge structure for outer flexible screen electronic equipment - Google Patents

Abstract

The utility model discloses a hinge structure for an outer flexible screen electronic device, which comprises a hinge, wherein the hinge comprises five first shrimp shell parts, a second shrimp shell part, a third shrimp shell part, a fourth shrimp shell part, a fifth shrimp shell part and a plurality of synchronous motion mechanisms for hinging the five shrimp shell parts, which can synchronously rotate around respective centers, the utility model discloses a plurality of shrimp shell parts are arranged, the synchronous rotation of the hinge is realized among the plurality of shrimp shell parts through a plurality of synchronous motion mechanisms with the same structure, the rotating parts with the same structure further simplify the internal structure of the hinge and save the manufacturing cost of the hinge while ensuring the synchronous rotation of each shrimp shell part, simultaneously the service life of the hinge can also be invisibly improved, the plurality of hinge constraint mechanisms enable the five shrimp shell parts to do specific constraint track rotary motion and cooperate with the synchronous motion mechanisms to realize the synchronous linkage among the shrimp shell parts, and when the equipment is opened or closed, the total length of the outer side of the shrimp shell piece is unchanged and is kept smooth all the time, and the flexible screen is supported.

Description

Hinge structure for outer flexible screen electronic equipment

Technical Field

The utility model relates to an electronic equipment part technical field, in particular to hinge structure for flexible screen electronic equipment in outside.

Background

Flexible screens are an emerging screen. For an outer flexible screen mobile terminal in which a flexible screen is disposed outside the mobile terminal, it is necessary to cope with a length change caused by the closing and opening of a hinge. For the middle part of the hinge, some hinges adopt a structure of a plurality of supporting bodies to realize the support and the shape change when bending and flattening.

1) However, when the existing hinge structure rotates, the structure of a rotating assembly in the hinge is complex, the rotating assembly is complex to install in the hinge, and parts in the complex component are easy to damage in the long-time use process of the hinge, so that the manufacturing cost and the service life of equipment are greatly influenced;

2) the general hinge of hinge structure for flexible screen of current is when rotating, and its inner structure's linkage feedback nature is relatively poor, and hinge pivoted action smoothness nature can not be guaranteed, and driven hinge structure for flexible screen does not possess angle limit function yet, does not have the hinge of linkage feedback structure simultaneously, and the user of service is when opening and closing equipment, and the strength is too big or the speed of opening and shutting is very fast probably causes irreversible damage to the hinge.

3) Traditional hinge structure for flexible screen, when closed, can not fold in well between every joint for the hinge is bulky, also forces the electronic equipment that uses traditional hinge structure to accomplish frivolously, influences the whole pleasing to the eye and the sale of equipment of appearance of equipment.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an outside flexible screen hinge structure for electronic equipment to the inside runner assembly structure of hinge that the current flexible screen equipment that proposes used is comparatively complicated in solving above-mentioned background art, and the runner assembly is also more complicated at the internally mounted of hinge, and complicated component is in the long-time use of hinge, and the part in the component easily takes place to damage, very big influence the manufacturing cost of equipment and life's problem.

In order to achieve the above object, the utility model provides a following technical scheme: a hinge structure for an electronic device with an outer flexible screen comprises a hinge, wherein the hinge comprises five first shrimp shell parts, a second shrimp shell part, a third shrimp shell part, a fourth shrimp shell part and a fifth shrimp shell part which can synchronously rotate around respective centers, and a plurality of synchronous movement mechanisms for hinging the five shrimp shell parts, and the five shrimp shell parts are also hinged with a plurality of hinge constraint mechanisms matched with the synchronous movement mechanisms for use;

the inner side of one end of the first shrimp shell piece is fixedly provided with a first synchronous movement mechanism through a screw, and the first shrimp shell piece is rotatably connected with the second shrimp shell piece and the third shrimp shell piece through the first synchronous movement mechanism respectively;

one end of the second shrimp shell piece and one end of the third shrimp shell piece are provided with a second synchronous motion mechanism and a third synchronous motion mechanism respectively through screws, the second synchronous motion mechanism and the third synchronous motion mechanism are arranged in a mirror symmetry mode, the second shrimp shell piece is rotatably connected with the fourth shrimp shell piece and the first shrimp shell piece respectively through the second synchronous motion mechanism, the third shrimp shell piece is rotatably connected with the fifth shrimp shell piece and the first shrimp shell piece respectively through the third synchronous motion mechanism, and the synchronous rotation of the five shrimp shell pieces is realized through the three synchronous motion mechanisms.

As an optimal technical scheme of the utility model, five shrimp shell spare comprise shrimp shell member and two shrimp shell end fittings, two shrimp shell end fittings pass through the screw respectively with two end fixed connection of the shrimp shell member that correspond, and the every shrimp shell member outside of five shrimp shell spare all fixes and is equipped with a plurality of arc tile shape archs that are used for supporting flexible outer screen.

As a preferred technical scheme, hinge restraint mechanism includes Y type crescent moon bellying, Y type crescent moon groove spare and r type crescent moon bellying, the equal fixed mounting in shrimp shell member both ends of first shrimp shell spare has Y type crescent moon bellying, the equal fixed mounting in shrimp shell member both ends of second shrimp shell spare and third shrimp shell spare has Y type crescent moon groove spare that uses with the articulated cooperation of Y type crescent moon bellying, the equal fixed mounting in shrimp shell member both ends of fourth shrimp shell spare and third shrimp shell spare has r type crescent moon bellying, rail groove sliding fit in r type crescent moon bellying and the Y type crescent moon groove spare that corresponds, to first shrimp shell spare, second shrimp shell spare, third shrimp shell spare, specific restraint orbit rotary motion is done to five shrimp shell spares of fourth shrimp shell spare and fifth shrimp shell spare, cooperate a plurality of synchronous motion mechanisms to realize the linkage of five shrimp shell spares.

The utility model discloses an it is preferred technical scheme, three synchronous motion mechanism all includes Y type boss, round pin axle one end that smooth fit connects in the through-hole of Y type boss both sides all rotates and is connected with the fin, the meshing tooth has all been seted up to the one end of two fins, two fins realize synchronous rotation through intermeshing's meshing tooth, the other end of two fins all is equipped with the connecting pin head of integral type structure, the Y type boss of first synchronous motion mechanism passes through screw fixed mounting on the shrimp shell end piece of first shrimp shell end department, the connecting pin head of two fin end departments of first synchronous motion mechanism with install respectively in the track groove spare sliding fit connection on second shrimp shell spare and third shrimp shell end department shrimp shell end spare, realize the synchronous rotation of second shrimp shell spare and third shrimp shell spare and first shrimp shell spare.

As an optimal technical scheme of the utility model, the Y type boss of second synchronous motion mechanism passes through screw fixed mounting on the shrimp shell end piece of second shrimp shell end department, and the connecting pin head of two fin end departments of second synchronous motion mechanism is connected with the rail groove spare sliding fit who installs respectively on first shrimp shell spare and fourth shrimp shell end piece end department shrimp shell end piece, realizes the synchronous rotation of first shrimp shell spare and fourth shrimp shell spare.

As an optimal technical scheme of the utility model, the Y type boss of third synchronous motion mechanism passes through screw fixed mounting on the shrimp shell end head spare of third shrimp shell end department, and the connecting pin head of two wing piece end departments of third synchronous motion mechanism is connected with the rail groove spare sliding fit who installs respectively on first shrimp shell spare and fifth shrimp shell end head spare of end department, realizes the synchronous rotation of first shrimp shell spare and fifth shrimp shell spare.

As a preferred technical scheme of the utility model, the left side shell connecting piece with left equipment casing installation is all installed to the shrimp shell end piece of fourth shrimp shell both ends end department, and the right side shell connecting piece with equipment right side casing installation is all installed to the shrimp shell end piece of fifth shrimp shell both ends end department.

As an optimal technical scheme of the utility model, when first shrimp shell spare, second shrimp shell spare, third shrimp shell spare, fourth shrimp shell spare and fifth shrimp shell spare realized synchronous rotation through three synchronous motion mechanism and a plurality of hinge restraint mechanism, the axis of rotation of every shrimp shell spare and its central line coincidence.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model relates to an outside flexible screen hinge structure for electronic equipment has following beneficial effect:

1) through the multiple shrimp shell pieces, the synchronous rotation of the hinges is realized among the multiple shrimp shell pieces through the multiple synchronous motion mechanisms with the same structure, the rotating pieces with the same structure ensure the synchronous rotation of the shrimp shell pieces, the internal structure of the hinges is further simplified, the manufacturing cost of the hinges is saved, meanwhile, the service life of the hinges can be invisibly prolonged, the multiple hinge constraint mechanisms enable the five shrimp shell pieces to do specific constraint track rotary motion and cooperate with the synchronous motion mechanisms to realize synchronous linkage among the shrimp shell pieces, and when the device is opened or closed, the total length of the outer sides of the five shrimp shell pieces is unchanged and is kept smooth all the time, and the flexible screen is supported;

2) the plurality of shrimp shell pieces are hinged through the synchronous motion mechanism and the hinge constraint mechanism, so that the plurality of shrimp shell pieces can reliably rotate around respective centers in a linkage manner, the smoothness of the hinge during rotation is ensured, the angle of the shrimp shell pieces during rotation can play a role in limiting through two meshed and connected fins of the rotation limiting mechanism, and the angle limiting during multi-opening of equipment is realized;

3) the distance between the components of the synchronous movement mechanism in the hinge part is directly shortened, the angle is automatically adjusted to absorb the distance, meanwhile, the structural component connected with the synchronous rotating mechanism is not subjected to extrusion force or pulling force, and meanwhile, when the synchronous rotating mechanism is closed, the needed Z-direction space is small, the internal space of the hinge part is saved, and the design trend of lightness and thinness of the mobile phone is met.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a back view of the present invention;

fig. 3 is a schematic structural view after the hinge of the present invention is folded;

fig. 4 is an enlarged schematic view of fig. 1 at a according to the present invention;

fig. 5 is a schematic view of a partial structure of the present invention;

fig. 6 is a schematic structural view of the first synchronous moving mechanism of the present invention.

In the figure: 1. a hinge; 11. a first shrimp shell member; 101. meshing teeth; 102. a fin; 103. a track member; 104. a Y-shaped boss; 1101. a shrimp shell rod member; 1102. a shrimp shell end piece; 1a, a first synchronous motion mechanism; 1b, a second synchronous motion mechanism; 1c, a third synchronous motion mechanism; 1d, a hinge restraining mechanism; 1d1, Y-shaped crescent projection; 1d2, Y-shaped crescent groove piece; 1d3, r-shaped crescent convex pieces; 12. a second shrimp shell member; 13. a third shrimp shell member; 14. a fourth shrimp shell member; 15. a fifth shrimp shell component; 2. a left side housing connection; 3. a right side housing connector.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-6, the present invention provides a hinge structure for an outer flexible screen electronic device, including a hinge 1, the hinge 1 includes five first, second, third, fourth and fifth shrimp shell members 11, 12, 13, 14, 15 capable of rotating around their respective centers and a plurality of synchronous moving mechanisms for hinging the five shrimp shell members, and the five shrimp shell members are further hinged with a plurality of hinge constraint mechanisms 1d used in cooperation with the synchronous moving mechanisms;

the inner side of one end of the first shrimp shell component 11 is fixedly provided with a first synchronous movement mechanism 1a through a screw, and the first shrimp shell component 11 is rotatably connected with a second shrimp shell component 12 and a third shrimp shell component 13 through the first synchronous movement mechanism 1 a;

one end of the second shrimp shell 12 and one end of the third shrimp shell 13 are provided with a second synchronous motion mechanism 1b and a third synchronous motion mechanism 1c through screws respectively, the second synchronous motion mechanism 1b and the third synchronous motion mechanism 1c are arranged in a mirror symmetry mode, the second shrimp shell 12 is rotatably connected with a fourth shrimp shell 14 and a first shrimp shell 11 through the second synchronous motion mechanism 1b respectively, the third shrimp shell 13 is rotatably connected with a fifth shrimp shell 15 and the first shrimp shell 11 through the third synchronous motion mechanism 1c respectively, and the synchronous rotation of the five shrimp shells is realized through the three synchronous motion mechanisms.

Further, five shrimp shell spare comprise shrimp shell member 1101 and two shrimp shell end fittings 1102, two shrimp shell end fittings 1102 pass through the screw respectively with two end fixed connection of corresponding shrimp shell member 1101, and the every shrimp shell member 1101 outside of five shrimp shell members all is fixed and is equipped with a plurality of arc tile shape archs that are used for supporting flexible outer screen, and arc tile shape arch can effectively support flexible screen.

Further, the hinge constraint mechanism 1d comprises a Y-shaped crescent protrusion piece 1d1, a Y-shaped crescent groove piece 1d2 and an r-shaped crescent protrusion piece 1d3, Y-shaped crescent protrusion pieces 1d1 are fixedly installed at two ends of the shrimp shell rod 1101 of the first shrimp shell piece 11, Y-shaped crescent protrusion pieces 1d2 which are in hinged fit with the Y-shaped crescent protrusion pieces 1d1 are fixedly installed at two ends of the shrimp shell rod 1101 of the second shrimp shell piece 12 and the third shrimp shell piece 13, r-shaped crescent protrusion pieces 1d3 are fixedly installed at two ends of the shrimp shell rod 1101 of the fourth shrimp shell piece 14 and the third shrimp shell piece 13, the r-shaped crescent protrusion pieces 1d3 and the Y-shaped crescent protrusion pieces 1d1 are in sliding fit with corresponding rail grooves in the Y-shaped crescent groove pieces 1d2, and a specific linkage motion track of the first shrimp shell piece 11, the second shrimp shell piece 12, the third shrimp shell piece 13, the fourth shrimp shell piece 14 and the fifth shrimp shell piece 14 is in sliding fit with a specific linkage motion track of the five shrimp shell root constraint mechanism, and a synchronous motion of the five shrimp shell root is realized, the first shrimp shell component 11, the second shrimp shell component 12, the third shrimp shell component 13, the fourth shrimp shell component 14 and the fifth shrimp shell component 15 can be opened and closed synchronously by the hinge constraint mechanism 1 d.

Further, the three synchronous motion mechanisms all include Y-shaped bosses 104, pin shafts connected in a smooth fit manner in through holes on two sides of the Y-shaped bosses 104 are rotatably connected with fins 102, meshing teeth 101 are formed in one ends of the two fins 102, the two fins 102 synchronously rotate through the meshing teeth 101 which are meshed with each other, connecting pin heads of an integrated structure are arranged at the other ends of the two fins 102, the Y-shaped bosses 104 of the first synchronous motion mechanism 1a are fixedly installed on the shrimp shell end piece 1102 at the end of the first shrimp shell piece 11 through screws, the connecting pin heads at the ends of the two fins 102 of the first synchronous motion mechanism 1a are connected with rail groove pieces 103 which are respectively installed on the shrimp shell end piece 1102 at the ends of the second shrimp shell piece 12 and the third shrimp shell piece 13 in a sliding fit manner, so that the second shrimp shell piece 12 and the third shrimp shell piece 13 synchronously rotate with the first shrimp shell piece 11, and torque force generated when the meshing teeth 101 of the fins 102 of the synchronous motion mechanisms are meshed with each other can also play a role in limiting the angle when the shrimp shell pieces rotate The role of the bit.

Furthermore, the Y-shaped boss 104 of the second synchronous moving mechanism 1b is fixedly mounted on the second shrimp shell end piece 1102 at the end of the second shrimp shell piece 12 through screws, and the connecting pin heads at the ends of the two wings 102 of the second synchronous moving mechanism 1b are connected with the rail groove piece 103 respectively mounted on the first shrimp shell piece 11 and the fourth shrimp shell piece 1102 at the end of the fourth shrimp shell piece 14 in a sliding fit manner, so that the first shrimp shell piece 11 and the fourth shrimp shell piece 14 synchronously rotate.

Furthermore, the Y-shaped boss 104 of the third synchronous moving mechanism 1c is fixedly mounted on the shell end piece 1102 at the end of the third shell member 13 by screws, and the connecting pin heads at the ends of the two fins 102 of the third synchronous moving mechanism 1c are connected with the rail groove member 103 respectively mounted on the shell end piece 1102 at the ends of the first shell member 11 and the fifth shell member 15 in a sliding fit manner, so that the first shell member 11 and the fifth shell member 15 synchronously rotate.

Further, the left side shell connecting piece 2 of installing with left equipment casing is all installed to the shrimp shell end piece 1102 of the 14 both ends of fourth shrimp shell spare, the right side shell connecting piece 3 of installing with the equipment right side casing is all installed to the shrimp shell end piece 1102 of the 15 both ends of fifth shrimp shell spare, install with left equipment casing that can be quick through the left side shell connecting piece 2 of installation, install with right equipment casing that can be quick through right side shell connecting piece 3.

Furthermore, when the first shrimp shell member 11, the second shrimp shell member 12, the third shrimp shell member 13, the fourth shrimp shell member 14 and the fifth shrimp shell member 15 realize synchronous rotation through the three synchronous motion mechanisms and the plurality of hinge constraint mechanisms 1d, the rotation axis of each shrimp shell member is superposed with the central line of each shrimp shell member, each shrimp shell member rotates around the center of each shrimp shell member, the total length of the position where each shrimp shell member is attached with the flexible screen after being unfolded and closed is unchanged, and the tension and the pressure applied to the flexible screen in the motion process are reduced.

Specifically, when the electronic device needs to be opened, the left device shell and the right device shell are pulled, the left device shell drives the fourth shrimp shell 14 to rotate through the left shell connector 2, the right device shell drives the fifth shrimp shell 15 to rotate through the right shell connector 3, when the fourth shrimp shell 14 rotates, the fourth shrimp shell 14 generates an acting force on the first shrimp shell 11 through the second synchronous motion mechanism 1b, the connecting pin head at the end of one fin 102 of the second synchronous motion mechanism 1b slides in the rail groove 103 arranged on the fourth shrimp shell 14 to compensate for the distance, meanwhile, the fin 102 drives the other fin 102 matched with the fin to rotate through the meshing teeth 101, the connecting pin head at the end of the fin 102 matched to rotate slides in the rail groove 103 arranged on the first shrimp shell 11 to drive the first shrimp shell 11 to rotate synchronously, when the fifth shrimp shell 15 rotates, the fifth shrimp shell 15 will also generate acting force on the first shrimp shell 11 through the third synchronous moving mechanism 1c, the connecting pin at the end of one of the wings 102 of the third synchronous moving mechanism 1c will slide in the rail slot 103 installed on the fifth shrimp shell 15 to compensate the distance, at the same time, the wing 102 will drive the other wing 102 matching with it to rotate through the engaging tooth 101, the connecting pin at the end of the wing 102 matching with the rotation will slide in the rail slot 103 installed on the first shrimp shell 11, and then drive the first shrimp shell 11 to rotate synchronously, the rotating first shrimp shell 11 can drive the second shrimp shell 12 and the third shrimp shell 13 to rotate through the first synchronous moving mechanism 1a, the connecting pin at the ends of the two wings 102 of the first synchronous moving mechanism 1a will slide in the rail slot 103 installed on the second shrimp shell 12 and the third shrimp shell 13 respectively, compensating the distance, thereby realizing the synchronous rotation of the first shrimp shell component 11, the second shrimp shell component 12, the third shrimp shell component 13, the fourth shrimp shell component 14 and the fifth shrimp shell component 15, simultaneously providing torsion force for the rotation of the first shrimp shell component 11, the second shrimp shell component 12, the third shrimp shell component 13, the fourth shrimp shell component 14 and the fifth shrimp shell component 1 by the first synchronous motion mechanism 1a, the second synchronous motion mechanism 1b and the third synchronous motion mechanism 1c, generating mechanical rotation feedback, and limiting the torsion force when the meshing teeth 101 of the fins 102 of the synchronous motion mechanism are meshed;

the rotating fourth and fifth shrimp shell members 14 and 15 are fixedly provided with r-shaped crescent moon protruding parts 1d3 at both ends, the r-shaped crescent moon protruding part 1d3 of the fourth shrimp shell member 14 slides in the crescent moon groove at one side of the Y-shaped crescent moon groove 1d2 of the second shrimp shell member 12, after the Y-shaped crescent moon groove 1d2 of the second shrimp shell member 12 is stressed, the crescent moon groove at the other side of the Y-shaped crescent moon groove 1d2 slides in the crescent moon groove at one side of the Y-shaped crescent moon protruding part 1d1 of the first shrimp shell member 11, the distance is compensated, the r-shaped crescent moon protruding part 1d3 of the fifth shrimp shell member 15 slides in the crescent moon groove at one side of the Y-shaped crescent moon groove 1d2 of the third shrimp shell member 13, the Y-shaped crescent moon protruding part 1d2 of the Y-shaped crescent moon groove member 1d2 of the third shrimp shell member 13 slides in the crescent moon protruding part at the other side of the Y-shaped crescent moon groove 1, the distance is compensated, synchronous linkage between the fourth shrimp shell piece 14, the fifth shrimp shell piece 15, the second shrimp shell piece 12, the third shrimp shell piece 13 and the first shrimp shell piece 11 is achieved, and due to the fact that the r-shaped crescent protruding piece 1d3 and the Y-shaped crescent protruding piece 1d1 of the hinge constraint mechanism 1d are in sliding fit with the corresponding rail grooves in the Y-shaped crescent groove piece 1d2, the five shrimp shell pieces are made to do specific constraint track rotating motion, opening of the device is achieved, and the device can be used normally.

It should be added that: when the device is opened or closed, the total length of the outer sides of the first, second, third, fourth and fifth shrimp shell parts 11, 12, 13, 14, 15 is constant and always smooth, and supports the flexible screen.

In the description of the present invention, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.

In the present invention, unless otherwise explicitly specified or limited, for example, it may be fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (8)

1. The hinge structure for the outer flexible screen electronic equipment is characterized by comprising a hinge, wherein the hinge comprises five first shrimp shell parts, a second shrimp shell part, a third shrimp shell part, a fourth shrimp shell part, a fifth shrimp shell part and a plurality of synchronous movement mechanisms for hinging the five shrimp shell parts, wherein the first shrimp shell part, the second shrimp shell part, the third shrimp shell part, the fourth shrimp shell part and the fifth shrimp shell part can synchronously rotate around respective centers;

the inner side of one end of the first shrimp shell piece is fixedly provided with a first synchronous movement mechanism through a screw, and the first shrimp shell piece is rotatably connected with the second shrimp shell piece and the third shrimp shell piece through the first synchronous movement mechanism respectively;

one end of the second shrimp shell piece and one end of the third shrimp shell piece are provided with a second synchronous motion mechanism and a third synchronous motion mechanism respectively through screws, the second synchronous motion mechanism and the third synchronous motion mechanism are arranged in a mirror symmetry mode, the second shrimp shell piece is rotatably connected with the fourth shrimp shell piece and the first shrimp shell piece respectively through the second synchronous motion mechanism, the third shrimp shell piece is rotatably connected with the fifth shrimp shell piece and the first shrimp shell piece respectively through the third synchronous motion mechanism, and the synchronous rotation of the five shrimp shell pieces is realized through the three synchronous motion mechanisms.

2. The hinge structure for an outside flexible screen electronic device according to claim 1, wherein: the five shrimp shell pieces are composed of shrimp shell rod pieces and two shrimp shell end pieces, the two shrimp shell end pieces are fixedly connected with two ends of the corresponding shrimp shell rod pieces through screws respectively, and a plurality of arc tile-shaped bulges used for supporting the flexible outer screen are fixedly arranged on the outer side of each shrimp shell rod piece of the five shrimp shell pieces.

3. The hinge structure for an outside flexible screen electronic device according to claim 2, wherein: the hinge constraint mechanism comprises Y-shaped crescent protruding pieces, Y-shaped crescent groove pieces and r-shaped crescent protruding pieces, the Y-shaped crescent protruding pieces are fixedly installed at two ends of a shrimp shell rod piece of the first shrimp shell piece, the Y-shaped crescent protruding pieces are fixedly installed at two ends of a shrimp shell rod piece of the second shrimp shell piece and two ends of a shrimp shell rod piece of the third shrimp shell piece and are matched with the Y-shaped crescent protruding pieces in a hinged mode, the r-shaped crescent protruding pieces and the Y-shaped crescent protruding pieces are in sliding fit with the corresponding rail grooves in the Y-shaped crescent groove pieces, and specific constraint track rotating motion is conducted on the five shrimp shell pieces of the first shrimp shell piece, the second shrimp shell piece, the third shrimp shell piece, the fourth shrimp shell piece and the fifth shrimp shell piece, and linkage of the five shrimp shell pieces is achieved through cooperation of the plurality of synchronous motion mechanisms.

4. The hinge structure for an outside flexible screen electronic device according to claim 2, wherein: the three synchronous motion mechanisms all comprise Y-shaped bosses, one ends of pin shafts which are connected in a smooth fit manner in through holes on two sides of the Y-shaped bosses are all rotatably connected with fins, meshing teeth are arranged at one ends of the two fins, the two fins realize synchronous rotation through the meshing teeth which are meshed with each other, connecting pin heads of an integrated structure are arranged at the other ends of the two fins, the Y-shaped bosses of the first synchronous motion mechanisms are fixedly installed on the shrimp shell end head pieces at the ends of the first shrimp shell pieces through screws, the connecting pin heads at the ends of the two fins of the first synchronous motion mechanisms are connected with rail groove pieces which are installed on the shrimp shell end pieces at the ends of the second shrimp shell pieces and the third shrimp shell pieces respectively in a sliding fit manner, and the synchronous rotation of the second shrimp shell pieces and the third shrimp shell pieces and the first shrimp shell pieces is realized.

5. The hinge structure for an outside flexible screen electronic device according to claim 4, wherein: the Y-shaped boss of the second synchronous movement mechanism is fixedly arranged on the end piece of the second shrimp shell piece through a screw, the connecting pin heads at the ends of the two fins of the second synchronous movement mechanism are in sliding fit connection with the rail groove pieces respectively arranged on the end pieces of the first shrimp shell piece and the fourth shrimp shell piece, and the first shrimp shell piece and the fourth shrimp shell piece synchronously rotate.

6. The hinge structure for an outside flexible screen electronic device according to claim 4, wherein: the Y-shaped boss of the third synchronous movement mechanism is fixedly arranged on a shrimp shell end piece at the end of the third shrimp shell piece through a screw, and connecting pin heads at the ends of two fins of the third synchronous movement mechanism are connected with rail groove pieces respectively arranged on the shrimp shell end pieces at the ends of the first shrimp shell piece and the fifth shrimp shell piece in a sliding fit manner, so that the first shrimp shell piece and the fifth shrimp shell piece can synchronously rotate.

7. The hinge structure for an outside flexible screen electronic device according to claim 2, wherein: the left side shell connecting piece installed with the left equipment shell is installed to the shrimp shell end pieces at the end of the two ends of the fourth shrimp shell piece, and the right side shell connecting piece installed with the right equipment shell is installed to the shrimp shell end pieces at the end of the two ends of the fifth shrimp shell piece.

8. The hinge structure for an outside flexible screen electronic device according to claim 1, wherein: when the first shrimp shell piece, the second shrimp shell piece, the third shrimp shell piece, the fourth shrimp shell piece and the fifth shrimp shell piece realize synchronous rotation through the three synchronous motion mechanisms and the plurality of hinge constraint mechanisms, the rotation axis of each shrimp shell piece is superposed with the central line of the shrimp shell piece.

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