CN113163034A

CN113163034A - Shell assembly and electronic device

Info

Publication number: CN113163034A
Application number: CN202110425715.1A
Authority: CN
Inventors: 符勇
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2021-04-20
Filing date: 2021-04-20
Publication date: 2021-07-23
Anticipated expiration: 2041-04-20
Also published as: CN113163034B

Abstract

The application discloses a shell subassembly and electron device. The shell assembly comprises a body and a telescopic supporting assembly in sliding connection with the body, the flat part of the flexible display screen is exposed out of the shell assembly and is connected with the telescopic supporting assembly, the expansion part can be hidden in the shell assembly, and a first rack is formed on the body. The telescopic supporting component comprises a first support, a second support and a first belt transmission mechanism, and the first support is connected with the body in a sliding mode. The second support is connected with the first support in a sliding mode, and a second rack is formed on the second support. First gear and the second gear of first area drive mechanism all rotationally set up on first support, and first conveyer belt is around establishing on first gear and second gear and all mesh with first gear and second gear, and first gear still meshes with first rack, and the second gear still meshes with the second rack. In this manner, the extension portion can be extended or retracted into the housing assembly by telescoping the support assembly to change the display area of the electronic device.

Description

Shell assembly and electronic device

Technical Field

The present application relates to the field of electronic technology, and more particularly, to a case assembly and an electronic device.

Background

In the related art, the display screen of the electronic device such as a mobile phone can be partially hidden in the housing, and when a large display area is needed, the user needs to be satisfied by unfolding the part of the display screen hidden in the housing to the outside of the housing. Therefore, how to expand the display screen to increase the display area is a technical problem researched by technicians.

Disclosure of Invention

The embodiment of the application provides a shell assembly and an electronic device.

The shell assembly is used for connecting a flexible display screen, the flexible display screen comprises a flat part and an expansion part, the shell assembly comprises a body and a telescopic supporting assembly in sliding connection with the body, the flat part is exposed out of the shell assembly and is connected with the telescopic supporting assembly, the expansion part can be hidden in the shell assembly, and a first rack is formed on the body; the telescopic support assembly comprises:

the first bracket is connected with the body in a sliding manner;

the second bracket is connected with the first bracket in a sliding manner, and a second rack is formed on the second bracket; and

the first belt transmission mechanism is mounted on the first support and comprises a first gear, a second gear and a first transmission belt, the first gear and the second gear are rotatably arranged on the first support, the first transmission belt is wound on the first gear and the second gear and is meshed with the first gear and the second gear, the first gear is further meshed with the first rack, and the second gear is further meshed with the second rack;

wherein the first bracket is slidable relative to the body in a direction away from each other to drive the second bracket to slide relative to the first bracket in a direction away from each other via the first rack, the first belt transmission mechanism, and the second rack, such that the extension portion is at least partially deployable out of the housing assembly.

The electronic device of the embodiment of the application comprises:

a flexible display screen comprising a flat portion and an extended portion; and

in the above-described case assembly, the flat portion is exposed outside the main body and connected to the telescopic support assembly, and the extension portion can be hidden inside the main body.

In shell subassembly and electron device that this application was implemented, flexible supporting component includes first support, second support and first area drive mechanism, and first support and body sliding connection are formed with first rack on the body, second support and first support sliding connection, are formed with the second rack on the second support. The first rack, the first belt transmission mechanism and the second rack drive the second bracket to slide relative to the first bracket in a direction away from each other, so that the expansion part can be at least partially unfolded out of the shell assembly. Therefore, when a small display area is needed for carrying conveniently, the display screen can be hidden in the shell assembly by the first support, the second support and the first belt transmission mechanism; when a larger display area is needed, the first support, the second support and the first belt transmission mechanism can unfold the part of the display screen hidden in the shell component to the outside of the shell so as to meet the requirements of a user, and the user experience is better.

Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.

Drawings

The above and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic perspective view of an electronic device according to an embodiment of the present application;

fig. 2 is a schematic perspective view of an electronic device according to an embodiment of the present application;

fig. 3 is a schematic partial structural diagram of an electronic device according to an embodiment of the present application;

FIG. 4 is a schematic structural diagram of another part of an electronic device according to an embodiment of the present application;

fig. 5 is a schematic structural diagram of a part of an electronic device according to an embodiment of the present application;

fig. 6 is a schematic plan view of an electronic device according to an embodiment of the present application;

FIG. 7 is a schematic cross-sectional view taken along line VII-VII of FIG. 6 according to an embodiment of the present application;

FIG. 8 is an enlarged schematic view of A in FIG. 3 according to an embodiment of the present application;

FIG. 9 is an enlarged schematic view of B in FIG. 7 according to an embodiment of the present application;

fig. 10 is another partial schematic structural diagram of an electronic device according to an embodiment of the present application;

fig. 11 is a schematic structural diagram of another part of an electronic device according to an embodiment of the present application;

fig. 12 is an enlarged schematic view of C in fig. 11 according to the embodiment of the present application.

Description of the main element symbols:

an electronic device 100;

case assembly 10, body 11, first rack 111, second rack 112, third rack 113, fourth rack 114, wind-up reel 115, telescopic support assembly 12, first bracket 121, second bracket 122, third bracket 123, fourth bracket 124, fifth bracket 125, sixth bracket 126, first belt transmission mechanism 13, first gear 131, second gear 132, first belt conveyor 133, second belt transmission mechanism 14, third gear 141, fourth gear 142, second belt conveyor 143, third belt transmission mechanism 15, fifth gear 151, sixth gear 152, third belt conveyor 153, fourth belt transmission mechanism 16, first pulley 161, second pulley 162, fourth belt conveyor 163, fifth belt transmission mechanism 17, first roller 171, second roller 172, fifth belt conveyor 173, flexible display screen 20, flat section 21, expanded section 22, driving member 30, motor 31, transmission assembly 32, motor 31, Gear set 321, screen driving shaft 322, appearance member 40 and magnetic member 50.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative and are only for the purpose of explaining the present application and are not to be construed as limiting the present application.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The following disclosure provides many different embodiments or examples for implementing different features of the application. To simplify the disclosure of the present application, the components and settings of a specific example are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or reference letters in the various examples, which have been repeated for purposes of brevity and clarity and do not in themselves dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

Referring to fig. 1 and 2, an electronic device 100 according to an embodiment of the present disclosure includes a housing assembly 10 according to an embodiment of the present disclosure and a flexible display 20. The flexible display 20 comprises a flat portion 21 and an extended portion 22. The flat portion 21 is exposed outside the body 11, and the expanded portion 22 can be hidden inside the body 11.

Referring to fig. 2 to 5, the housing assembly 10 of the present embodiment includes a main body 11 and a telescopic support assembly 12, the telescopic support assembly 12 is slidably connected to the main body 11, a flat portion 21 is exposed outside the housing assembly 10 and connected to the telescopic support assembly 12, an expansion portion 22 can be hidden in the housing assembly 10, and a first rack 111 is formed on the main body 11.

The telescopic support assembly 12 includes a first bracket 121, a second bracket 122 and a first belt transmission mechanism 13, wherein the first bracket 121 is slidably connected with the body 11. The second bracket 122 is slidably connected to the first bracket 121, the second rack 112 is formed on the second bracket 122, and the first belt transmission mechanism 13 is mounted on the first bracket 121.

Referring to fig. 4 and 5, the first belt transmission mechanism 13 includes a first gear 131, a second gear 132 and a first belt 133, the first gear 131 and the second gear 132 are both rotatably disposed on the first bracket 121, the first belt 133 is wound around the first gear 131 and the second gear 132 and is engaged with both the first gear 131 and the second gear 132, the first gear 131 is further engaged with the first rack 111, and the second gear 132 is further engaged with the second rack 112.

The first bracket 121 can slide in a direction away from each other relative to the body 11 to drive the second bracket 122 to slide in a direction away from each other relative to the first bracket 121 through the first rack 111, the first belt transmission mechanism 13, and the second rack 112, so that the expansion portion 22 can be at least partially unfolded out of the housing assembly 10.

In the case assembly 10 and the electronic device 100 of the embodiment of the present application, the telescopic support assembly 12 includes a first bracket 121, a second bracket 122, and a first belt transmission mechanism 13, the first bracket 121 is slidably connected to the body 11, the first rack 111 is formed on the body 11, the second bracket 122 is slidably connected to the first bracket 121, and the second rack 112 is formed on the second bracket 122. The first rack 111, the first belt transmission mechanism 13 and the second rack 112 drive the second bracket 122 to slide in a direction away from each other relative to the first bracket 121, so that the expansion portion 22 can be at least partially unfolded out of the housing assembly 10. Thus, when a larger display area is needed, the first bracket 121 only needs to move towards the direction away from the body 11, and the first belt transmission mechanism 13 can drive the second bracket 122 to move towards the direction away from the first bracket 121, so that the extension portion 22 of the flexible display screen 20 hidden in the housing assembly 10 can be at least partially extended out of the housing assembly 10 to extend the display area of the electronic device 100, and the use requirements of the user can be met.

In the embodiment of the present application, the type of the electronic device 100 is not limited, and may be a smart phone, a tablet computer, or an electronic device that requires the flexible display screen 20, such as a game device, an in-vehicle computer, a notebook computer, a data storage device, an audio playing device, a video playing device, and a wearable device, and only the electronic device 100 includes the flexible display screen 20 and the shell assembly 10 of the embodiment of the present application, so that the extension portion 22 can be hidden in the body 11 or expanded to the outside of the body 11.

The electronic device 100 according to the embodiment of the present application may have two modes. The first configuration is a configuration (as shown in fig. 1) in which the telescopic support assembly 12 is retracted in the body 11, that is, the configuration in which the electronic device 100 is located when the first support 121 and the second support 122 simultaneously approach the body 11 and move to the extreme positions, in which the flat portion 21 of the flexible display screen 20 is exposed outside the housing assembly 10, the expanded portion 22 is substantially completely hidden inside the housing assembly 10, and the display area of the electronic device 100 is small and convenient to carry.

The second configuration is a configuration in which the second support 122 moves away from the first support 121, and the first support 121 moves away from the body 11 at the same time, so that the extension portion 22 of the flexible display 20 can be gradually unfolded out of the housing assembly 10 (see fig. 2), and in the second configuration, the extension portion 22 of the flexible display 20 is at least partially unfolded out of the housing assembly 10 to form the display portion of the electronic device 100 together with the flat portion 21, so that the display area of the electronic device 100 is larger, and a better display effect is provided for a user.

In the present embodiment, the "display area" refers to an area of a portion of the flexible display panel 20 exposed outside the case assembly 10 for display. In addition, in the embodiment of the present application, the fact that the extension portion 22 can be hidden in the case assembly 10 may be understood that the extension portion 22 can be housed in the internal space of the case assembly 10 and is not exposed, or the fact that the extension portion 22 can be hidden in the back surface of the case assembly 10 and is exposed from the back surface, and the description is given herein taking the case that the extension portion 22 can be housed in the internal space of the case assembly 10 and is not exposed as an example.

In the embodiment of the present application, the first gear 131 and the second gear 132 may be duplicate gears of the same type to ensure that the transmission speeds of the first gear 131 and the second gear 132 are the same. The first rack 111 of the body 11 can be engaged with the upper teeth of the first gear 131, the lower teeth of the first gear 131 are engaged with the first belt 133, the first belt 133 is also engaged with the lower teeth of the second gear 132, and the upper teeth of the second gear 132 are engaged with the second rack 112.

Taking the telescopic supporting component 12 including only the first bracket 121 and the second bracket 122 as an example, in such a case, one end of the flat portion 21 may be fixed on the second bracket 122, when the first bracket 121 moves away from the body 11, the upper teeth of the first gear 131 roll along the first rack 111 toward the body 11, the first belt 133 is wound around the first gear 131 and the second gear 132, and the first gear 131 drives the second gear 132 to rotate through the first belt 133, so as to push the second rack 112 to move away from the first bracket 121. In this way, the first support 121 can be moved away from the body 11 relative to the body 11, and the second support 122 can be slid away from the first support 121 relative to the first support 121, so that the extension 22 can be at least partially unfolded out of the housing assembly 10.

When the first bracket 121 moves closer to the body 11, the upper teeth of the first gear 131 roll toward the body 11 along the first rack 111, the first belt 133 winds around the first gear 131 and the second gear 132, and the first gear 131 drives the second gear 132 to rotate reversely through the first belt 133. The second gear 132 rotates to push the second rack 112 to move toward the body 11. In this way, the first support 121 can be moved toward the body 11 relative to the body 11, and the second support 122 can be slid toward the first support 121 relative to each other, so that the extension 22 can be at least partially retracted into the housing assembly 10.

It is understood that in other embodiments, the first belt transmission mechanism 13 may also use a dual roller and a belt as the transmission structure, for example, in such a case, each of the first gear 131 and the second gear 132 may include a pulley and a gear coaxially disposed, the belt may be wound on the pulley and may transmit a friction force, and the gear is engaged with the first rack 111 and the second rack 112 to convert the rotation into the translation motion.

Note that the first rack 111 is formed on the body 11, which means that the first rack 111 may be attached to the body 11, or the body 11 and the first rack 111 may be integrally molded. Similarly, the second rack 112 may be fixedly mounted on the second bracket 122, or the second rack 112 and the second bracket 122 may be integrally formed.

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

It should be noted that in the description of the present application, it is to be understood that the terms "central", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner" and "outer" indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present application. In addition, it should be noted that, in the description of the present application, it should be noted that, unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be interpreted broadly, e.g., as either a fixed connection, a detachable connection, or an integral connection; may be a mechanical connection; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

Referring to fig. 7 to 12, in some embodiments, the electronic device 100 further includes a driving part 30, the driving part 30 is installed in the body 11 and connected to the first bracket 121, and the driving part 30 is configured to drive the first bracket 121 to slide relative to the body 11.

In this manner, the first bracket 121 can be automatically driven by the driving member 30 to slide relative to the body 11, thereby enabling the extension portion 22 to be deployed out of the case assembly 10 or retracted into the case assembly 10.

Further, referring to fig. 2 and 7, in some embodiments, the driving member 30 is further connected to the extension portion 22, and the driving member 30 can drive the extension portion 22 to be extended out of the shell assembly 10 or retracted into the shell assembly 10 while driving the first support 121 to slide relative to the body 11.

In this way, only one driving member 30 is needed to realize the sliding of the bracket and the expansion and retraction of the expansion part 22, thereby saving the cost.

In one possible embodiment, when the driving member 30 drives the first bracket 121 and the second bracket 122, the first gear 131 and the second gear 132 have the same number of teeth, so that the distance the first bracket 121 moves relative to the body 11 is equal to the distance the second bracket 122 moves relative to the first bracket 121.

Further, referring to fig. 3 to 5, in some embodiments, the telescopic supporting assembly 12 may further include a third bracket 123, a fourth bracket 124 and a second belt transmission mechanism 14, the third bracket 123 is slidably connected to the second bracket 122, the fourth bracket 124 is slidably connected to the third bracket 123, the expansion portion 22 is connected to the fourth bracket 124, a third rack 113 is formed on the fourth bracket 124, and the second belt transmission mechanism 14 is disposed on the third bracket 123.

The second belt transmission mechanism 14 includes a third gear 141, a fourth gear 142, and a second belt 143, the third gear 141 and the fourth gear 142 are both rotatably disposed on the third bracket 123, the second belt 143 is wound around the third gear 141 and the fourth gear 142 and is engaged with both the third gear 141 and the fourth gear 142, the second rack 112 is a double-sided rack, the third gear 141 and the second gear 132 are engaged with both sides of the second rack 112, and the fourth gear 142 is further engaged with the third rack 113.

When the extension portion 22 is at least partially unfolded out of the main body 11, the fourth support 124 can slide in a direction away from each other relative to the third support 123 under the action of the flexible display 20, so as to drive the third support 123 to slide in a direction away from each other relative to the second support 122 through the third rack 113, the second belt transmission mechanism 14 and the second rack 112.

In this way, the third support 123 and the fourth support 124 can be integrally separated from each other with respect to the second support 122, and simultaneously, the two supports can also be separated from each other, so that the telescopic support assembly 12 can achieve multi-stage telescopic to further increase the display area of the flexible display screen 20. Moreover, the third support 123 and the fourth support 124 can support the flexible display screen 20, so that the flexible display screen 20 is prevented from being damaged, the display area of the flexible display screen 20 can be increased, and the second belt transmission mechanism 14 can ensure the smooth movement of the third support 123 and the fourth support 124.

In such an embodiment, the electronic device 100 may include only four brackets, and the flat portion 21 of the flexible display 20 is fixedly connected to the fourth bracket 124. In the first configuration, the fourth support 124, the third support 123, the second support 122, the first support 121 and the body 11 are sequentially engaged, or the fourth support 124, the third support 123, the second support 122 and the first support 121 are all engaged in the body 11, so that the extension portion 22 can be at least partially retracted into the housing assembly 10, thereby facilitating the carrying of the electronic device 100. In the second state, the fourth support 124, the third support 123, the second support 122 and the first support 121 may be unfolded out of the body 11, so that the expansion portion 22 may be at least partially unfolded out of the body 11, thereby enabling the electronic device 100 to have a sufficiently large display area.

It should be noted that, in this embodiment, during the process of converting the first configuration and the second configuration of the electronic device 100, the first support 121 and the second support 122 are directly driven by the driving component 30, and the fourth support is connected to the flat portion 21 so that the flexible display 20 can drive the fourth support 124 to slide.

In one example, when the driving member 30 drives the electronic device 100 to have the first configuration converted into the second configuration, the driving member 30 drives the first support 121 and the second support 122 away from the body 11, and the driving member 30 drives the extension portion 22 of the flexible display 20 to gradually extend out of the housing assembly 10. The flat portion 21 of the flexible display screen 20 is connected to the fourth support 124, so that the expansion portion 22 of the flexible display screen 20 can push the fourth support 124 to move in a direction away from the body 11 during the unfolding process, when the fourth support 124 moves, the third rack 113 on the fourth support 124 drives the fourth gear 142 and the third gear 141 to rotate, and due to the engagement of the third gear 141 and the second rack 112, the third gear 141 rolls on the second rack 112 in a direction away from the second support 122, so that the third support 123 moves in a direction away from each other relative to the second support 122 to realize the unfolding of the third support 123 and the second support 122, thereby realizing the conversion of the form of the electronic device 100.

When the driving part 30 drives the electronic device 100 to have the second configuration converted into the first configuration, the driving part 30 drives the first support 121 and the second support 122 to approach the body 11 while the driving part 30 drives the extension portion 22 of the flexible display 20 to gradually retract back into the housing assembly 10. The flat portion 21 of the flexible display 20 is connected to the fourth support 124, so that the flexible display 20 can pull the fourth support 124 to move toward the direction close to the body 11, when the fourth support 124 moves, the third rack 113 on the fourth support 124 drives the fourth gear 142 and the third gear 141 to rotate in opposite directions, and as the third gear 141 is engaged with the second rack 112, the third gear 141 rolls on the second rack 112 toward the direction close to the second support 122, so that the third support 123 moves toward the direction close to each other relative to the second support 122 to retract and engage the third support 123 and the second support 122, thereby implementing the conversion of the form of the electronic device 100.

In the above example, the driving part 30 driving the first support 121 and the second support 122 and the driving part 30 driving the flexible display 20 are the same driving part 30. It is understood that in other embodiments, the driving member 30 for driving the first support 121 to move and the driving member 30 for driving the flexible display 20 to move may be different driving members 30, as required.

In addition, during the process of switching the electronic device 100 from the first configuration to the second configuration, the third support 123 and the fourth support 124 may be synchronized with the movement of the first support 121 and the second support 122, so that the four supports are simultaneously extended. After the first support 121 and the second support 122 move to the extreme positions, the expansion portion 22 may continue to expand outward, so as to drive the third support 123 and the fourth support 124 to start the outward expansion movement, which is not limited herein. During the process of switching the electronic device 100 from the second configuration to the first configuration, the third support 123 and the fourth support 124 may be synchronized with the movement of the first support 121 and the second support 122, so that the four supports are retracted simultaneously.

Specifically, in such embodiments, the second belt drive 14 may be substantially identical in structure to the first belt drive 13. That is, the third gear 141 and the fourth gear 142 may also be dual gears, so that the third gear 141 may simultaneously engage the second rack 112 and the second conveyor belt 143, and so that the fourth gear 142 may simultaneously engage the second conveyor belt 143 and the third rack 113. Thus, the third bracket 123 and the fourth bracket 124 can be ensured to be stably slid. At this time, the fourth support 124 may be connected to the flat portion 21, so that the flexible display 20 may drive the third support 123 and the fourth support 124 to move, thereby enabling the electronic device 100 to complete the form conversion.

The second rack 112 is a double-sided rack such that the third gear 141 and the second gear 132 can be engaged with two sides of the second rack 112, respectively, thereby avoiding the third gear 141 and the second gear 132 from interfering with each other. Meanwhile, the third gear 141 is engaged with the second rack 112 to ensure the smoothness of the movement of the third bracket 123.

The third gear 141 and the fourth gear 142 may be duplicate gears of the same type to ensure that the transmission speeds of the third gear 141 and the fourth gear 142 are the same.

When the telescopic supporting assembly 12 only includes the first support 121 to the fourth support 124, in one possible embodiment, during the process of gradually expanding the expansion portion 22 out of the housing assembly 10, the flexible display 20 pushes the fourth support 124 to gradually move toward a direction away from the body 11, the fourth support 124 drives the second rack 112 to move away from the third support 123, the upper teeth of the fourth gear 142 are engaged with the second rack 112, so that the fourth gear 142 rolls on the second rack 112, and the lower teeth of the fourth gear 142 are engaged with the second conveyor belt 143.

The second transmission belt 143 is wound around the third gear 141 and the fourth gear 142, and the second transmission belt 143 rotates under the action of the fourth gear 142 to drive the third gear 141. The third gear 141 has a lower tooth engaged with the second belt 143 and an upper tooth engaged with the second rack 112 so that the third gear 141 can roll on the second rack 112. In this way, while the third support 123 is far away from the second support 122, the fourth support 124 can be far away from the third support 123, so that the four supports are fully unfolded relative to the body 11, and the electronic device 100 is converted from the first configuration to the second configuration.

When the flexible display 20 pulls the fourth support 124 to gradually move toward the body 11 in the process of gradually retracting the expansion portion 22 into the housing assembly 10, the fourth gear 142, the third gear 141 and the second conveyor belt 143 are reversely rotated to realize the conversion of the electronic device 100 from the second configuration to the first configuration.

Further, referring to fig. 3 to 7, in some embodiments, the telescopic supporting assembly 12 further includes a fifth bracket 125, a sixth bracket 126 and a third belt transmission mechanism 15, the fifth bracket 125 is slidably connected to the fourth bracket 124, the sixth bracket 126 is slidably connected to the fifth bracket 125, the flat portion 21 is connected to the sixth bracket 126, the sixth bracket 126 is formed with a fourth rack 114, and the third belt transmission mechanism 15 is disposed on the fifth bracket 125.

The third belt transmission mechanism 15 includes a fifth gear 151, a sixth gear 152, and a third conveyor belt 153, the fifth gear 151 and the sixth gear 152 are both rotatably disposed on the fifth bracket 125, the third conveyor belt 153 is wound around the fifth gear 151 and the sixth gear 152 and is engaged with both the fifth gear 151 and the sixth gear 152, the third rack 113 is a double-sided rack, the fifth gear 151 and the fourth gear 142 are engaged with both sides of the third rack 113, and the sixth gear 152 is further engaged with the fourth rack 114.

When the extension portion 22 is at least partially unfolded out of the body 11, the sixth support 126 can slide in a direction away from each other relative to the fifth support 125 under the action of the flexible display 20 to drive the fifth support 125 to slide in a direction away from each other relative to the fourth support 124 through the fourth rack 114, the third belt transmission mechanism 15 and the third rack 113, the sixth support 126 is used for supporting the flat portion 21, and the body 11, the first support 121, the second support 122, the third support 123, the fourth support 124 and the fifth support 125 are used for supporting the portion of the extension portion 22 unfolded out of the body 11.

In this way, the fifth support 125 and the sixth support 126 can be integrally separated from each other with respect to the fourth support 124, and also separated from each other, so that the telescopic support assembly 12 can achieve multi-stage telescopic to further increase the display area of the flexible display screen 20. Moreover, the fifth support 125 and the sixth support 126 can support the flexible display screen 20, so as to prevent the flexible display screen 20 from being damaged, and at the same time, the display area of the flexible display screen 20 can be further increased, and the third belt transmission mechanism 15 can ensure the smooth movement of the fifth support 125 and the sixth support 126.

In such an embodiment, electronic device 100 may include only six stands. In the first configuration, sixth brace 126, fifth brace 125, fourth brace 124, third brace 123, second brace 122, and first brace 121 may be retracted back into body 11 such that expanded portion 22 may be at least partially retracted within case assembly 10, thereby making electronic device 100 portable;

in the second state, the sixth support 126, the fifth support 125, the fourth support 124, the third support 123, the second support 122 and the first support 121 may be unfolded out of the body 11, so that the expansion part 22 may be at least partially unfolded out of the body 11, thereby enabling the electronic device 100 to have a sufficiently large display area.

Specifically, the fifth gear 151 and the sixth gear 152 may be duplicate gears, so that the fifth gear 151 may simultaneously engage the third rack 113 and the third conveyor belt 153, while the sixth gear 152 may simultaneously engage the third conveyor belt 153 and the fourth rack 114. In this way, it is ensured that the fifth bracket 125 and the sixth bracket 126 can stably slide. At this time, the sixth support 126 may be connected to the flat portion 21, so that the flexible display 20 may drive the fifth support 125 and the sixth support 126 to move, thereby completing the form conversion of the electronic device 100.

Further, the third rack 113 is a double-sided rack, so that the fifth gear 151 and the fourth gear 142 can be respectively engaged with two sides of the third rack 113, thereby avoiding the mutual interference between the fifth gear 151 and the fourth gear 142. The fifth gear 151 and the sixth gear 152 may be duplicate gears of the same type to ensure that the transmission speeds of the fifth gear 151 and the sixth gear 152 are the same.

Referring to fig. 4 and 5, when the telescopic supporting component 12 includes the first bracket 121 to the sixth bracket 126, in a possible embodiment, the first bracket 121 and the second bracket 122 are moved away from each other relative to the main body 11 by the driving part 30 when the driving part 30 drives the electronic device 100 to convert from the first configuration to the second configuration.

Meanwhile, the expansion portion 22 is gradually expanded out of the housing assembly 10 under the driving of the driving part 30, in the process, when the flexible display screen 20 pushes the sixth rack 126 to gradually move towards the direction away from the body 11, the sixth rack 126 drives the fourth rack 114 to move away from the fifth rack 125, the upper teeth of the sixth gear 152 are meshed with the fourth rack 114, so that the sixth gear 152 rolls on the fourth rack 114, the lower teeth of the sixth gear 152 are meshed with the third conveyor belt 153, the sixth gear 152 can drive the fifth gear 151 to rotate through the third conveyor belt 153, and the fifth gear 151 can roll on the third rack 113 towards the direction away from the fourth rack 124. Thus, when the sixth support 126 is far away from the fifth support 125, the fifth support 125 is also far away from the fourth support 124, and when the fifth support 125 is far away from the fourth support 124 to the limit position, the fifth support 125 drives the fourth support 124 to be far away from the third support 123, and further drives the third support 123 to be far away from the second support 122 through the third rack 113 and the second belt transmission mechanism 14 (the specific implementation principle thereof may refer to the above), so that the six supports are completely unfolded with respect to the body 11, and the electronic device 100 is converted from the first form to the second form.

When the driving member 30 drives the electronic device 100 to have the second configuration converted into the first configuration, the driving member 30 drives the first support 121 and the second support 122 to approach the body 11, and the driving member 30 drives the expanding portion 22 to gradually retract back into the housing assembly 10. The flat portion 21 of the flexible display 20 is connected to the sixth support 126, so that the flexible display 20 can pull the sixth support 126 to move toward the body 11, the sixth support 126 drives the fifth support 125 to move toward the limit position relative to the fourth support 124 through the third belt transmission mechanism 15, at this time, the flexible display 20 pulls the fourth support 124 to move toward the body 11, and the fourth support 124 drives the third support 123 to move toward the limit position relative to the second support 122 through the second belt transmission mechanism 14, thereby implementing the configuration conversion of the electronic device 100.

In the above example, the driving part 30 driving the first support 121 and the second support 122 and the driving part 30 driving the flexible display 20 are the same driving part 30. It is understood that in other embodiments, the driving member 30 for driving the first support 121 to move and the driving member 30 for driving the flexible display 20 to move may be different driving members 30, as required. Also, in the above-described embodiment, the driving part 30 drives the first and

second supports

121 and 122 to move by a distance smaller than the distance by which the expansion part 22 is expanded to the outside of the case assembly 10 or retracted to the inside of the case assembly 10.

In addition, during the transformation of the form of the electronic device 100, the third support 123, the fourth support 124, the fifth support 125 and the sixth support 126 may be synchronized with the movement of the first support 121 and the second support 122, so that the six supports are simultaneously expanded. It is also possible to wait for the first support 121 and the second support 122 to move to the extreme positions and then start moving the other four supports, which is not limited herein.

Of course, it is understood that in one possible embodiment, the electronic device 100 may include only the third support 123 and omit the fourth support 124 through the sixth support 126. In such an embodiment, the telescopic support assembly 12 further comprises a third bracket 123, the third bracket 123 is slidably connected with the second bracket 122, the third bracket 123 is connected with the flat portion 21, and the second belt transmission mechanism may be omitted. When the extension portion 22 is at least partially unfolded out of the body 11, the third brackets 123 can slide in directions away from each other relative to the second brackets 122 under the action of the flexible display 20 to keep the flexible display 20 flat.

Furthermore, it is also understood that, in another possible embodiment, the electronic device 100 may include the first support 121 to the fourth support 124 and omit the fifth support 125 and the sixth support 126, or only include the first support 121 to the fifth support 125 and omit the sixth support 126, which is not limited herein.

Referring to fig. 1 to 3, in some embodiments, in the first configuration, the first support 121, the second support 122, the third support 123, the fourth support 124, the fifth support 125 and the sixth support 126 are sequentially engaged and abutted, and the expansion portion 22 is completely hidden in the body 11.

In the second state, the first bracket 121, the second bracket 122, the third bracket 123, the fourth bracket 124, the fifth bracket 125 and the sixth bracket 126 are separated, the expansion portion 22 is at least partially expanded out of the body 11, and the body 11, the first bracket 121, the second bracket 122, the third bracket 123, the fourth bracket 124 and the fifth bracket 125 support the portion of the expansion portion 22 expanded out of the body 11.

Thus, the six brackets are retracted into the body 11 at the same time, so that the electronic device 100 is small in size and convenient to carry; the six supports are unfolded out of the body 11 at the same time, so that the flexible display screen 20 can be supported by the six supports, and the electronic device 100 has a larger display area. The electronic device 100 is switched between the two forms, so that the electronic device 100 has the advantages of the two forms, and the use experience of the user is improved.

It can be understood that, in the first configuration, the six brackets are sequentially embedded and abutted against the fully retracted body 11, so that the electronic device 100 has a size only equal to that of the body 11, and is convenient for a user to carry. At this time, the expansion part 22 is completely hidden in the body 11, and belongs to a hidden structure.

In the first configuration, the extended portion 22 of the flexible display 20 is not used for display and only the flat portion 21 is used for display. When the six brackets move away from each other relative to the body 11, the flexible display 20 can be moved, so that the extension portion 22 of the flexible display 20 is at least partially pulled out of the housing assembly 10 to switch to the second configuration.

In the second state, the six brackets and the body 11 are sequentially separated, the extension portion 22 is at least partially pulled out from the case assembly 10, and the flat portion 21 and the extension portion 22 are simultaneously used for display, thereby changing the display area of the electronic device 100. At this time, the display area is much larger than that of the first form, providing better operation experience. The six brackets and the body 11 can support the flexible display screen 20, so that the use stability of the electronic device 100 is ensured.

Specifically, in one example, when the electronic device 100 is transformed from the first configuration to the second configuration, the six brackets move away from the main body 11 and the six brackets move away from each other, that is, the six brackets move away from the main body 11 at the same time, the sixth bracket 126 moves faster than the first five brackets, the fifth bracket 125 moves faster than the first four brackets, and so on. In this way, the six stents can be fully deployed and thereby converted to the second configuration. Wherein the first bracket 121 and the second bracket 122 are driven by the motor 31, and the third bracket 123, the fourth bracket 124, the fifth bracket 125 and the sixth bracket 126 are pushed by the flexible display 20. The motor 31 for driving the first support 121 and the second support 122 and the motor 31 for driving the flexible display 20 may be the same motor 31, or may be different motors 31.

In another example, when the electronic device 100 is converted from the second configuration to the first configuration, six brackets move closer to the body 11 and the six brackets move closer to each other, that is, the six brackets move closer to the body 11 at the same time, the sixth bracket 126 moves faster than the first five brackets, the fifth bracket 125 moves faster than the first four brackets, and so on. In this way, the six supports can be completely retracted inside the body 11, thus transforming into the first configuration.

Referring to fig. 3 to 5, in some embodiments, the first gear 131, the second gear 132, the third gear 141, the fourth gear 142, the fifth gear 151, and the sixth gear 152 are all dual gears.

In this manner, the first gear 131, the second gear 132, the third gear 141, the fourth gear 142, the fifth gear 151, and the sixth gear 152 can simultaneously engage with the rack and the conveyor belt to ensure the stability of the transmission of the housing assembly 10.

Specifically, six gears all need to be connected with two transmission members, and therefore, all six gears are duplicate gears. Because the sizes of the six brackets in the sliding direction are similar, the six gears can have the same number of teeth, or the six gears can be of the same type, so that the transmission uniformity of each bracket is ensured.

Meanwhile, the duplicate gear has an upper tooth portion and a lower tooth portion, so that a height difference exists between two transmission members meshed with the duplicate gear in the thickness direction of the electronic device 100, or the transmission members can be stacked in the thickness direction of the electronic device 100, and then six supports can be stacked in the thickness direction of the electronic device 100, so that the six supports can be completely retracted into the body 11 in the first form of the electronic device 100, and the electronic device 100 is convenient to carry.

In some embodiments, a dual roller and belt may be used instead of a dual gear and belt, and the dual roller and belt may be frictionally driven to move the six brackets and the body 11.

Referring to fig. 10, in some embodiments, the surfaces of the body 11, the first support 121, the second support 122, the third support 123, the fourth support 124, the fifth support 125 and the sixth support 126 for supporting the flexible display 20 are all flush.

Thus, the body 11, the first bracket 121, the second bracket 122, the third bracket 123, the fourth bracket 124, the fifth bracket 125 and the sixth bracket 126 can bear the flexible display screen 20, when the extension portion 22 is unfolded out of the shell assembly 10, the first bracket 121, the second bracket 122, the third bracket 123, the fourth bracket 124 and the fifth bracket 125 can support the extension portion, and the surfaces of the extension portion are flush with each other, so that the extension portion 22 cannot be raised or recessed after being unfolded, and the use experience of a user is not affected.

It will be appreciated that the user needs to keep the display screen sufficiently smooth and flat while using the electronic device 100. The flexible display screen 20 has certain flexibility and can be bent. Accordingly, the body 11, the first bracket 121, the second bracket 122, the third bracket 123, the fourth bracket 124, the fifth bracket 125, and the sixth bracket 126 may support the flexible display screen 20 so that the electronic device 100 may display flatness.

Referring to fig. 3 to 5, in some embodiments, the electronic device 100 further includes a magnetic member 50, the magnetic member 50 is mounted on the telescopic support assembly 12, and the magnetic member 50 is used for attracting the flexible display 20.

Thus, the magnetic member 50 can attach the flexible display 20 to the housing assembly 10, so as to prevent the flexible display 20 from wrinkling during the form conversion process of the electronic device 100, and ensure the stable force transmission during the form conversion process of the flexible display 20.

Specifically, during the process of converting the electronic device 100 from the first configuration to the second configuration, the driving component 30 may drive the expansion portion 22 of the flexible display 20 to gradually expand out of the housing assembly 10, and as described above, the expansion portion 22 may push the outermost bracket (e.g., the sixth bracket 126 shown in fig. 3) of the telescopic supporting assembly 12 to move away from the body 11 during the expansion process. In the process, the magnetic member 50 can tightly adhere the flexible display screen 20 on the telescopic support assembly 12 to the housing assembly 10, so as to avoid the flexible display screen 20 from being able to push out the outermost bracket of the telescopic support assembly 12 due to the wrinkling caused by the upward component force generated by the flexible display screen 20 when receiving the acting force of the driving member 30.

Similarly, during the process of converting the electronic device 100 from the second configuration to the first configuration, the flexible display 20 may be pulled by the driving member 30, and during this process, the magnetic member 50 may also attract the flexible display 20 to the housing assembly 10, so that the auxiliary expansion portion 22 is smoothly retracted into the housing assembly 10.

Referring to fig. 11 and 12, in some embodiments, the drive component 30 includes a motor 31 and a transmission assembly 32, and the transmission assembly 32 includes the fourth belt drive 16.

The fourth belt transmission mechanism 16 includes a first belt wheel 161, a second belt wheel 162 and a fourth belt 163 wound on the first belt wheel 161 and the second belt wheel 162, the motor 31 is connected to the first belt wheel 161, the first bracket 121 is fixedly connected to the fourth belt 163, and the motor 31 is used for driving the first belt wheel 161 to rotate.

In this way, the motor 31 can drive the first bracket 121 to move through the first pulley 161, the second pulley 162 and the fourth belt 163, so as to realize the sliding of the first bracket 121 relative to the body 11, thereby realizing the change of the form of the electronic device 100.

Specifically, the driving part 30 is installed in the body 11, the driving part 30 includes a motor 31 and a transmission assembly 32, and the transmission assembly 32 is connected to the motor 31 so that the transmission assembly 32 can transmit the driving force of the motor 31 to the bracket. The first support 121 may be clamped to the first conveyor belt 133 by a fixed clamping member (not shown).

In one possible embodiment, the motor 31 transmits a driving force to the first pulley 161 to rotate the first pulley 161, the fourth belt 163 is wound around the first pulley 161 and the second pulley 162, the first pulley 161 rotates to enable the fourth belt 163 to move around the first pulley 161 and the second pulley 162, and the first bracket 121 and the fourth belt 163 are fixedly connected, so that the first bracket 121 can be driven to slide relative to the body 11 when the fourth belt 163 moves to change the shape of the electronic device 100.

Referring to fig. 11 and 12, in some embodiments, the transmission assembly 32 further includes a gear set 321 and a fifth belt transmission mechanism 17, the motor 31 is connected to the gear set 321, and the gear set 321 is connected to the first belt pulley 161.

The fifth belt transmission mechanism 17 includes a first roller 171, a second roller 172 and a fifth belt 173 wound around the first roller 171 and the second roller 172, the first roller 171 is connected to a gear set 321, the fifth belt 173 is fixedly connected to an end of the expanded portion 22 away from the flat portion 21, an intermediate portion of the expanded portion 22 is wound around the body 11, and the motor 31 is configured to drive the first belt 161 and the first roller 171 to rotate through the gear set 321 so that the expanded portion 22 can be at least partially extended out of the housing assembly 10 or retracted into the housing assembly 10.

In this way, the motor 31 can drive the first pulley 161 to rotate through the gear set 321 to drive the first bracket 121, and simultaneously drive the extension portion 22 to move through the gear set 321 and the fifth belt transmission mechanism 17 to realize the extension and retraction of the extension portion 22.

In such an embodiment, in the first configuration, the extension portion 22 of the flexible display 20 may be wound on the fifth conveyor belt 173 after being wound around the body 11, so that the electric device is convenient to carry. The first roller 171, the second roller 172 and the fifth conveyor 173 may drive the flexible display screen 20 to move, thereby implementing a change of the state of the electronic device 100.

Specifically, the gear set 321 is dynamically coupled to a motor shaft of the motor 31, and a driving force generated by the motor 31 can be transmitted to the fourth belt transmission mechanism 16 and the fifth belt transmission mechanism 17 through the gear set 321, or the motor shaft rotates to drive the gear set 321 to rotate, and the gear set 321 adjusts a rotation speed to a proper value and then transmits the rotation speed to the fourth belt transmission mechanism 16 and the fifth belt transmission mechanism 17, thereby implementing the conversion of the form of the electronic device 100.

In the first form, the expansion portion 22 may be wound on the fifth conveyor belt 173, and when the conversion into the second form is performed, the motor 31 drives the first roller 171 to rotate, so that the fifth conveyor belt 173 rotates, and the expansion portion 22 is released to complete the conversion into the second form.

In the embodiment of the present application, the motor 31 and the gear set 321 for driving the fourth belt transmission mechanism 16 and the fifth belt transmission mechanism 17 may be the same, and in this case, the gear set 321 connects the fourth belt transmission mechanism 16 and the fifth belt transmission mechanism 17 at different transmission ratios, so that the fourth belt transmission mechanism 16 and the fifth belt transmission mechanism 17 drive the first support 121 and the flexible display 20 at different speeds, respectively. In one possible embodiment, the transmission speed of the fifth belt transmission mechanism 17 is six times that of the fourth belt transmission mechanism 16, or when the first support 121 is away from the main body 11 by one centimeter, the flexible display 20 drives the sixth support 126 to be away from the main body 11 by six centimeters, so that the coordinated movement of the six supports can be realized.

In some embodiments, two different driving members 30 may be adopted for the extension portion 22 and the first support 121, when the electronic device 100 is converted from the first configuration to the second configuration, the two driving members 30 may be simultaneously activated to move the first support 121 and the second support 122 to the extreme positions in the direction away from the body 11, then the driving member 30 driving the first support 121 to move is closed, and the driving member 30 driving the extension portion 22 continues to operate, so that the extension portion 22 can drive the third support 123, the fourth support 124, the fifth support 125 and the sixth support 126 to slide when being deployed until all the supports move to the extreme positions, that is, the second configuration.

When the electronic device 100 is converted from the second configuration to the first configuration, the flexible display 20 may be driven to pull the third support 123, the fourth support 124, the fifth support 125, and the sixth support 126 toward the body 11 to the movement limit, and then the first support 121 and the second support 122 may be driven to slide toward the body 11 to the movement limit, that is, the first configuration.

Referring to fig. 9 to 12, in some embodiments, the transmission assembly 32 further includes a screen driving shaft 322, the screen driving shaft 322 is rotatably disposed on the body 11 and abuts against a middle portion of the expansion portion 22, the screen driving shaft 322 is connected to the gear set 321, and the screen driving shaft 322 is configured to rotate under the driving of the motor 31 and the gear set 321 to drive the expansion portion 22 to be expanded out of the shell assembly 10 or retracted into the shell assembly 10.

In this way, the screen driving shaft 322 may assist the flexible display screen 20 to move, and prevent the flexible display screen 20 from wrinkling, so that the electronic device 100 is stable during the conversion process between the two modes. That is, the screen driving shaft 322 can provide a driving force to the extension 22 so that the extension 22 can have a sufficient force to drive the outermost leg (e.g., the sixth leg 126 in fig. 3) of the telescopic support assembly 12 away from the body 11 when being unfolded, and can also have a sufficient force to drive the outermost leg (e.g., the sixth leg 126 in fig. 3) of the telescopic support assembly 12 close to the body 11 when being retracted.

Illustratively, there may be two screen drive shafts 322, two screen drive shafts 322 being located at one end of the body 11. During the configuration conversion process of the electronic device 100, the motor 31 and the gear set 321 also drive the screen driving shaft 322 to rotate, and the roller portion of the screen driving shaft 322 directly contacts the flexible display screen 20, so as to drive the extension portion 22 of the flexible display screen 20 to extend out of the housing assembly 10 or retract into the housing assembly 10 by friction.

It is understood that during the configuration change of the electronic device 100, the screen driving shaft 322 drives the flexible display screen 20 to move by friction, and in such an embodiment, the flexible display screen 20 can be tightly attached to the housing assembly 10 by the matching magnetic member 50, thereby ensuring that the flexible display screen 20 always moves along the sliding direction of the bracket.

Referring to fig. 7 and 11, in some embodiments, the electronic device 100 further includes a design element 40 disposed at a bottom of the telescopic support assembly 12, the design element 40 seals a side of the telescopic support assembly 12 facing away from the flat portion 21, the design element 40 is connected to the driving component 30, and the driving component 30 is configured to roll or release the design element 40 while driving the first bracket 121 to slide relative to the body 11.

In this way, the exterior member 40 can carry each bracket to absorb shock and vibration, thereby enhancing the strength of the bracket and preventing the electronic device 100 from being damaged in the second state.

Specifically, referring to fig. 9, the body 11 is provided with a winding shaft 115, the winding shaft 115 is used for winding the appearance 40 on the recovery winding shaft 115 when the second form is converted into the first form, or the appearance 40 can be wound on the winding shaft 115; when the first form is converted into the second form, the winding shaft 18 can be driven by the motor 31 and the gear set 321 to rotate so as to release the appearance piece 40, so that the appearance piece 40 is received at the bottom of the telescopic support component 12 and can move along with the bracket, and further, the transmission structure of the bracket piece is prevented from being directly exposed outside. The exterior member 40 may absorb shock and vibration from the external environment and protect the internal components of the electronic device 100.

In the description herein, references to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although embodiments of the present application have been shown and described above, it is to be understood that the above embodiments are exemplary and not to be construed as limiting the present application, and that changes, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.

Claims

1. A shell component is characterized in that the shell component is used for connecting a flexible display screen, the flexible display screen comprises a flat part and an expansion part, the shell component comprises a body and a telescopic support component which is connected with the body in a sliding mode, the flat part is exposed out of the shell component and is connected with the telescopic support component, the expansion part can be hidden in the shell component, and a first rack is formed on the body; the telescopic support assembly comprises:

the first bracket is connected with the body in a sliding manner;

2. The housing assembly of claim 1, wherein the telescoping support assembly further comprises a third bracket slidably connected to the second bracket, the third bracket connecting the flat portion;

when the expansion part is at least partially unfolded out of the body, the third supports can slide relative to the second supports in the directions far away from each other under the action of the flexible display screen so as to keep the flexible display screen flat.

3. The housing assembly of claim 1, wherein the telescoping support assembly further comprises a third bracket, a fourth bracket, and a second belt drive, the third bracket being slidably coupled to the second bracket, the fourth bracket being slidably coupled to the third bracket, the extension portion being coupled to the fourth bracket, the fourth bracket having a third rack formed thereon, the second belt drive being disposed on the third bracket;

the second belt transmission mechanism comprises a third gear, a fourth gear and a second conveyor belt, the third gear and the fourth gear are both rotatably arranged on the third support, the second conveyor belt is wound on the third gear and the fourth gear and is meshed with the third gear and the fourth gear, the second rack is a bilateral rack, the third gear and the second gear are meshed with two sides of the second rack, and the fourth gear is also meshed with the third rack;

when the expansion part is at least partially unfolded out of the body, the fourth support can slide in the direction of moving away from each other relative to the third support under the action of the flexible display screen so as to drive the third support to slide in the direction of moving away from each other relative to the second support through the third rack, the second belt transmission mechanism and the second rack.

4. The housing assembly of claim 3, wherein the telescoping support assembly further comprises a fifth bracket, a sixth bracket, and a third belt drive, the fifth bracket slidably coupled to the fourth bracket, the sixth bracket slidably coupled to the fifth bracket, the flat portion coupled to the sixth bracket, the sixth bracket having a fourth rack formed thereon, the third belt drive disposed on the fifth bracket;

the third belt transmission mechanism comprises a fifth gear, a sixth gear and a third conveyor belt, the fifth gear and the sixth gear are both rotatably arranged on the fifth support, the third conveyor belt is wound on the fifth gear and the sixth gear and is meshed with the fifth gear and the sixth gear, the third rack is a bilateral rack, the fifth gear and the fourth gear are meshed with two sides of the third rack, and the sixth gear is also meshed with the fourth rack;

when the expansion part is at least partially unfolded out of the body, the sixth support can slide in the direction of separating from each other relative to the fifth support under the action of the flexible display screen so as to drive the fifth support to slide in the direction of separating from each other relative to the fourth support through the fourth rack, the third belt transmission mechanism and the third rack

Wherein the sixth stent is configured to support the flat portion, and the body, the first stent, the second stent, the third stent, the fourth stent, and the fifth stent are configured to support a portion of the expanded portion that is expanded outside the body.

5. The shell assembly of claim 4, wherein the shell assembly is switchable between a first configuration in which the first, second, third, fourth, fifth, and sixth stents are sequentially nested in abutment, the expanded portion being completely concealed within the body;

in the second state, the first, second, third, fourth, fifth, and sixth stents are separated, the expanded portion is at least partially deployed outside the body, and the body, the first, second, third, fourth, and fifth stents support the portion of the expanded portion deployed outside the body.

6. The housing assembly of claim 4, wherein the first gear, the second gear, the third gear, the fourth gear, the fifth gear, and the sixth gear are duplicate gears.

7. The housing assembly of claim 4, wherein the surfaces on the body, the first bracket, the second bracket, the third bracket, the fourth bracket, the fifth bracket, and the sixth bracket for supporting the flexible display screen are all flush.

8. An electronic device, comprising:

the shell assembly of any one of claims 1-7, the flat portion exposed outside the body and connected to the telescoping support assembly, the extension portion capable of being concealed within the body.

9. The electronic device of claim 8, further comprising a driving member installed in the body and connected to the first bracket, wherein the driving member is configured to drive the first bracket to slide relative to the body.

10. The electronic device of claim 9, wherein the driving member is further coupled to the extension portion, and the driving member is capable of driving the extension portion to be at least partially deployed out of the housing assembly or retracted into the housing assembly while driving the first bracket to slide relative to the body.

11. The electronic device according to claim 10, wherein the driving member includes a motor and a transmission assembly, the transmission assembly includes a fourth belt transmission mechanism, the fourth belt transmission mechanism includes a first pulley, a second pulley and a fourth belt wound around the first pulley and the second pulley, the motor is connected to the first pulley, the first bracket is fixedly connected to the fourth belt, and the motor is configured to rotate the first belt.

12. The electronic device of claim 11, wherein the transmission assembly further comprises a gear set and a fifth belt transmission mechanism, the motor is connected to the gear set, the gear set is connected to the first pulley, the fifth belt transmission mechanism comprises a first roller, a second roller and a fifth belt conveyor wound around the first roller and the second roller, the first roller is connected to the gear set, the fifth belt conveyor is fixedly connected to an end of the extension portion away from the flat portion, a middle portion of the extension portion is wound around the body, and the motor is configured to drive the first pulley and the first roller to rotate through the gear set so that the extension portion can be at least partially extended out of the housing assembly or retracted into the housing assembly.

13. The electronic device of claim 12, wherein the transmission assembly further comprises a screen driving shaft rotatably disposed on the body and abutting against a middle portion of the extension portion, the screen driving shaft is connected to the gear set, and the screen driving shaft is driven by the motor and the gear set to rotate so as to drive the extension portion to be deployed out of the housing assembly or retracted into the housing assembly.

14. The electronic device of claim 9, further comprising a cover disposed at a bottom of the telescopic support assembly, the cover sealing a side of the telescopic support assembly facing away from the flat portion, the cover being connected to the driving member, and the driving member being configured to roll or release the cover while driving the first bracket to slide relative to the body.

15. The electronic device of claim 8, further comprising a magnetic member, wherein the magnetic member is mounted on the telescopic support assembly, and the magnetic member is used for attracting the flexible display screen.