CN113810529A

CN113810529A - Electronic device

Info

Publication number: CN113810529A
Application number: CN202111111115.4A
Authority: CN
Inventors: 陈伟
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2021-09-18
Filing date: 2021-09-18
Publication date: 2021-12-17
Anticipated expiration: 2041-09-18
Also published as: CN113810529B

Abstract

The present application discloses an electronic device, comprising: a first casing, a second casing, a heating element and a flexible heat sink, the second casing is movable relative to the first casing, and the second casing is connected to the first casing. An adjustable first accommodating cavity is formed by enclosing; the heating element is arranged in the first accommodating cavity; the flexible heat sink is arranged in the first accommodating cavity, the first end of the flexible heat sink is connected with the first housing, The second end of the heat dissipation member is connected with the second casing; wherein, during the movement of the second casing relative to the first casing, the flexible heat dissipation member can be expanded or collapsed. In the embodiment of the present application, during the movement of the second housing relative to the first housing, the flexible heat sink can be unfolded or folded, and the flexible heat sink is also unfolded when the electronic device is unfolded, thereby increasing the heat dissipation of the flexible heat sink It is helpful for the flexible heat sink to make full use of the space in the first accommodating cavity to dissipate heat and improve the heat dissipation effect on the heating element.

Description

Electronic device

Technical Field

The application belongs to the technical field of communication equipment, and particularly relates to electronic equipment.

Background

At present, along with the improvement of the performance of the electronic equipment, the power consumption of the electronic equipment is also larger and larger, and the requirement on heat dissipation is also higher and higher. In the related art, a fixed heat sink is generally used to dissipate heat of a heating element in an electronic device, which results in poor heat dissipation effect.

Disclosure of Invention

The application aims at providing electronic equipment to solve the problem that in the related art, a fixed radiating fin is adopted to radiate a heating element in the electronic equipment, and the radiating effect is poor.

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

in a first aspect, an embodiment of the present application provides an electronic device, including:

a first housing;

the second shell can move relative to the first shell, and the second shell and the first shell are enclosed to form an adjustable first accommodating cavity;

the heating element is arranged in the first accommodating cavity;

the flexible heat radiating piece is arranged in the first accommodating cavity, a first end of the flexible heat radiating piece is connected with the first shell, and a second end of the flexible heat radiating piece is connected with the second shell;

wherein the flexible heat sink may be unfolded or folded during movement of the second housing relative to the first housing.

The electronic equipment provided by the embodiment of the application comprises a first shell, a second shell, a heating element and a flexible heat radiating piece, wherein the second shell can move relative to the first shell, the first shell and the second shell are enclosed to form an adjustable first accommodating cavity, the heating element is arranged in the first accommodating cavity, the flexible heat radiating piece is arranged in the first accommodating cavity, the first end of the flexible heat radiating piece is connected with the first shell, the second end of the flexible heat radiating piece is connected with the second shell, the second shell moves relative to the first shell, the flexible heat radiating piece can be unfolded or folded, the flexible heat radiating piece is unfolded when the electronic equipment is unfolded, the heat radiating area of the flexible heat radiating piece is increased, the flexible heat radiating piece is facilitated to fully utilize the space in the first accommodating cavity to radiate heat, and the heat radiating effect of the heating element is improved.

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 structural diagram of an electronic device provided in 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 perspective view of an electronic device provided in an embodiment of the present application;

FIG. 4 is a schematic cross-sectional view of an electronic device provided by an embodiment of the application in a state;

fig. 5 is a schematic cross-sectional view of an electronic device provided in an embodiment of the present application in another state;

fig. 6 is an exploded schematic view of an electronic device provided in an embodiment of the present application;

FIG. 7 is a schematic cross-sectional view of an electronic device provided by an embodiment of the application in a state;

fig. 8 is a schematic cross-sectional view of an electronic device provided in an embodiment of the present application in another state;

fig. 9 is a cross-sectional view of the connection shaft, the reel, the spring plate, and the flexible heat sink after assembly.

The figures show that: 110-a first shell, 120-a second shell, 130-a first containing cavity, 210-a heating element, 220-a mainboard, 230-a mainboard bracket, 240-a soaking element, 300-a flexible heat sink, 310-a first heat sink, 320-a second heat sink, 410-a connecting shaft, 420-a sleeve, 421-a second containing cavity, 422-an opening, 430-a spring plate, 500-a scroll screen, 600-a middle frame structure, 610-a first bracket, 620-a second bracket, 621-a connecting part, 622-a rack and 700-a key.

Detailed Description

Reference will now be made in detail to the 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 drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The features of the terms first and second in the description and in the claims of the present application may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality" means two or more unless otherwise specified. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.

In the description of the present application, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

As shown in fig. 1, an electronic device according to some embodiments of the present application includes:

the first housing 110 is provided with a first opening,

the second shell 120, the second shell 120 can move relative to the first shell 110, the second shell 120 and the first shell 110 enclose to form an adjustable first accommodating cavity 130;

the heating element 210, the heating element 210 is disposed in the first accommodating cavity 130;

a flexible heat sink 300, the flexible heat sink 300 being disposed in the first receiving cavity 130, a first end of the flexible heat sink 300 being connected to the first housing 110, and a second end of the flexible heat sink 300 being connected to the second housing 120;

wherein the flexible heat sink 300 may be unfolded or folded during the movement of the second housing 120 with respect to the first housing 110.

The electronic device provided by the embodiment can be a mobile terminal, a personal computer or a wearable device, and the like.

The electronic device may include a first housing 110 and a second housing 120 that are movably connected. For example, the electronic device may be a scroll screen mobile phone, which includes a sliding connection between the first housing 110 and the second housing 120; for another example, the electronic device may be a folding screen mobile phone, which includes a first housing 110 and a second housing 120 that are rotatably connected; for another example, the electronic device can be virtual reality glasses comprising a frame with an adjustable length, and the first housing 110 and the second housing 120 can be two-part housings that can be slidably connected to the frame; for another example, the electronic device may be a notebook computer, and the first housing 110 and the second housing 120 include a housing corresponding to the display screen side and a housing corresponding to the keyboard side, respectively, and may be rotatably connected therebetween.

Of course, the above is some examples of the type of the electronic device and the movable connection manner of the first casing 110 and the second casing 120 in the electronic device. In practical applications, the electronic device may not be limited to the above type, and the movable connection manner between the first casing 110 and the second casing 120 may be a sliding connection or a rotating connection, or may be another connection manner, which is not limited in this respect.

The first housing 110 and the second housing 120 may enclose to form a first accommodating chamber 130, because the first housing 110 and the second housing 120 are movably connected. Accordingly, the first accommodating cavity 130 formed by enclosing the first casing 110 and the second casing 120 may also be adjustable.

The first receiving cavity 130 is adjustable, which may be embodied in that the size or shape of the space of the first receiving cavity 130 may be adjusted. For example, when the electronic device is a scroll screen mobile phone, the first housing 110 and the second housing 120 slide relatively, so that the size of the space of the first accommodating cavity 130 can be adjusted; for another example, when the electronic device is a folding screen mobile phone, the first housing 110 and the second housing 120 rotate relatively, so that the spatial shape of the first accommodating cavity 130 can be adjusted.

A heat generating element 210 may be disposed in the first receiving chamber 130. For example, the heating element 210 may be a Central Processing Unit (CPU), a power chip, a camera module, a radio frequency Unit, or the like, which is not illustrated herein.

The heat generating element 210 can generate heat during operation, and the heat can be dissipated in time by arranging the heat dissipation structure, so as to avoid overhigh temperature of the electronic device. In this embodiment, the heat dissipation structure may include a flexible heat dissipation member 300 for dissipating heat of the heat generating element 210.

The flexible heat sink 300 is coupled to the first housing 110 at a first end and to the second housing 120 at a second end. When there is movement of the second housing 120 relative to the first housing 110, the flexible heat sink 300 may be unfolded or folded accordingly.

In some examples, the first end of the flexible heat sink 300 may be connected to the heat generating element 210, and the heat generating element 210 may be fixedly connected to the first housing 110, i.e., the flexible heat sink 300 may be indirectly connected to the first housing 110 through the heat generating element 210. As such, the flexible heat sink 300 may conduct and dissipate heat generated by the heat generating element 210 based on heat conduction.

Of course, in practical applications, a certain gap may exist between the flexible heat sink 300 and the heat generating element 210, and the heat generated on the heat generating element 210 may be transferred to the flexible heat sink 300 by thermal convection. At this time, one end of the flexible heat sink 300 may be directly connected to the first housing 110 such that the flexible heat sink 300 is disposed opposite to the heat generating element 210, increasing an area of the flexible heat sink 300 available for convective heat transfer.

Flexible heat sink 300 may be disposed in whole or in part in first receiving cavity 130. Generally, the heat generating component 210 is located in the first receiving cavity 130, and the flexible heat dissipating member 300 is used for dissipating heat from the heat generating component 210, so that the flexible heat dissipating member may be at least partially disposed in the first receiving cavity 130.

For example, a first end of the flexible heat dissipation member 300 may be disposed in the first receiving cavity 130, and a second end of the flexible heat dissipation member 300 may be located in the first receiving cavity 130, or may penetrate the second housing 120 from the first receiving cavity 130 to the outside of the electronic device.

The flexible heat sink 300 is a flexible structure and thus, may be deformed to be unfolded or folded. As for the folding manner of the flexible heat dissipating member 300, folding or rolling folding, etc. may be used.

For example, when the first housing 110 and the second housing 120 are relatively moved to reduce the volume of the first receiving cavity 130, the flexible heat dissipation member 300 is freely folded under the restriction of the wall surface of the first receiving cavity 130, or is folded along a predetermined fold. For another example, the flexible heat sink 300 may be wound around a rotating shaft connected to the second housing 120 when folded. When the flexible heat dissipation member 300 is unfolded, it may be unfolded from a folded state, or unfolded from a wound state, or the like. The expansion and contraction of the flexible heat sink 300 may cause the heat dissipation area thereof to change.

The implementation of the unfolding and folding of the flexible heat sink 300 will be described below with reference to some examples.

In one example, the electronic device may be a scroll-screen mobile phone, the first end of the flexible heat dissipation member 300 may be fixedly connected to the first housing 110 through the heat generating element 210, the second end of the flexible heat dissipation member 300 may be fixedly connected to the second housing 120, and when the first housing 110 slides in a direction away from the second housing 120, the distance between the first end and the second end of the flexible heat dissipation member 300 increases, and the flexible heat dissipation member 300 unfolds. Conversely, when the first housing 110 slides toward the direction approaching the second housing 120, the flexible heat sink 300 is folded.

For another example, the electronic device may be a folding screen mobile phone, and accordingly, the electronic device may include a first screen and a second screen, which are respectively connected to the first casing 110 and the second casing 120. A first end of the flexible heat sink 300 may be connected with a first screen; the second end of the flexible heat sink 300 may be connected to the second screen or to the second housing 120. When the first housing 110 rotates relative to the second housing 120, the length of the portion of the flexible heat dissipation member 300 located in the transition region between the first screen and the second screen changes, so that the flexible heat dissipation member 300 is unfolded or folded as a whole.

The electronic device provided by the embodiment of the application includes a first housing 110, a second housing 120, a heat generating element 210, and a flexible heat sink 300, wherein the second housing 120 is movable relative to the first housing 110, the first housing 110 and the second housing 120 enclose to form an adjustable first accommodating cavity 130, the heat generating element 210 is disposed in the first accommodating cavity 130, the flexible heat sink 300 is disposed in the first receiving cavity 130, a first end of the flexible heat sink 300 is connected to the first housing 110, a second end of the flexible heat sink 300 is connected to the second housing 120, the flexible heat sink 300 can be unfolded or folded during the movement of the second housing 120 relative to the first housing 110, when the electronic device is unfolded, the flexible heat sink 300 is also unfolded, so that the heat dissipation area of the flexible heat sink 300 is increased, the flexible heat sink 300 is facilitated to fully utilize the space in the first accommodating cavity 130 for heat dissipation, and the heat dissipation effect on the heating element 210 is improved.

In one example, the flexible heat spreader 300 is a graphene heat sink.

Generally, the graphene material has the characteristics of high temperature resistance, good thermal conductivity, chemical stability and the like, the heat dissipation coefficient of the graphene material is 2-5 times that of copper, but the density of the graphene material is only 1/10-1/4 of copper, the graphene material is lighter in weight, meanwhile, the graphene material is easy to process, the shape and the size can be customized according to needs, the plasticity is good, and in other aspects, the graphene material also has the advantages of electromagnetic wave shielding and the like.

Therefore, in the present example, the flexible heat sink 300 is a graphene heat sink, and the advantages of the graphene material can be obtained.

Of course, in practical applications, the flexible heat dissipation member 300 may also be a graphite sheet, a heat conductive silicone sheet, or a composite sheet.

In some examples, flexible heat sink 300 may be unitary; in other examples, flexible heat sink 300 may include a first heat sink and a second heat sink that are fixedly attached, and the materials used for the first and second heat sinks may be the same or different.

For simplicity, the following description will mainly use the electronic device as a mobile phone with a scroll screen as an example.

As shown in fig. 2 to fig. 6, optionally, the electronic device further includes a scroll screen 500, a first end of the scroll screen 500 is fixedly connected to the first casing 110, a second end of the scroll screen 500 is movably connected to the second casing 120, and the scroll screen 500, the first casing 110, and the second casing 120 can jointly enclose to form the first accommodating cavity 130.

As shown in fig. 2 and 3, fig. 2 and 3 are schematic perspective views of the electronic device as a scroll screen mobile phone. In the state shown in fig. 2, the first casing 110 and the second casing 120 in the scroll screen mobile phone are relatively close to each other, and the area of the screen of the scroll screen 500 available for the user is small; in the state shown in fig. 3, the distance between the first casing 110 and the second casing 120 of the scroll screen mobile phone is relatively long, and the area of the screen available to the user of the scroll screen 500 is large.

As shown in fig. 4, fig. 4 is a schematic cross-sectional view of the electronic device in the state shown in fig. 2. As can be seen from fig. 4, the cavity enclosed by the first casing 110 and the second casing 120 may communicate with an external space through an opening located on a front surface of the electronic device, and the scroll screen 500 may cover the opening and form a relatively closed first accommodating cavity 130 together with the first casing 110 and the second casing 120.

In the state shown in fig. 4, the distance between the first casing 110 and the second casing 120 is relatively short, and the width (the width direction is denoted as W in the drawing) between the two enclosed cavities is small, so the width of the exposed part of the scroll screen 500 is also relatively small, and the width of the part hidden in the first accommodating cavity 130 is large.

As shown in fig. 5, fig. 5 is a schematic cross-sectional view of the electronic device in the state shown in fig. 3. In fig. 5, the first housing 110 and the second housing 120 may be far away from each other, so that the width between the two enclosed cavities is larger, and therefore, the width of the exposed portion of the roller screen 500 is also relatively larger, and the width of the portion hidden in the first receiving cavity 130 is smaller.

In this embodiment, in order to facilitate the scroll screen 500 to reliably cover the front opening of the electronic device, a first end of the scroll screen 500 may be fixedly connected to the first casing 110, and a second end of the scroll screen 500 may be movably connected to the second casing 120.

When the first housing 110 moves away from the second housing 120, a pulling force is equally applied to the first end of the roller screen 500. The second end of spool screen 500 may be considered to be a free end to some extent and is crimped to be received in first receiving cavity 130. The second end of the roller screen 500 can be continuously unwound from the rolled state by pulling the first housing 110, and the width of the exposed portion of the roller screen 500 is increased accordingly.

In order to improve the operational reliability of the scroll screen 500, optionally, the electronic device further includes a first bracket 610 and a second bracket 620, the first bracket 610 and the second bracket 620 are respectively and fixedly connected to the first casing 110 and the second casing 120, and the first bracket 610 and the second bracket 620 are used for supporting the scroll screen 500.

In one example, the first support 610 and the second support 620 may be embodied as components of a middle frame structure 600 included in the electronic device. As shown in fig. 4 and 5, the middle frame structure 600 may be disposed on a side of the roller screen 500 facing the first receiving cavity 130, so as to support and protect the roller screen 500.

As shown in fig. 6, an exploded view of the electronic device of fig. 6 is shown. As can be seen from fig. 6, in some application scenarios, the first support 610 and the second support 620 may both have a comb-tooth-shaped structure, or each support may include a connecting portion 621, and a plurality of racks 622 located on one side of the connecting portion 621 and sequentially arranged along the length direction of the connecting portion 621, and a gap may exist between two adjacent racks 622.

When the first frame 610 is assembled with the second frame 620, the rack 622 of one frame can be inserted into a gap between two adjacent racks 622 of the other frame and can move in the gap.

The first bracket 610 and the second bracket 620 are respectively fixedly connected to the first casing 110 and the second casing 120, and when the first casing 110 and the second casing 120 slide relatively, the two brackets can also move relatively. In one example, when the two supports move relatively, the rack 622 of one support can be always located in the gap corresponding to the rack 622 of the other support, so that when the width of the exposed screen portion of the scroll screen 500 changes, the effective support for the screen portion can be always maintained, and the reliability of the electronic device is improved.

Alternatively, the heat generating element 210 is fixedly coupled to the first housing 110, and the first end of the flexible heat sink 300 is coupled to the first housing 110 through the heat generating element 210.

As shown above, the heating element 210 may be a Central Processing Unit (CPU), a power chip, a camera module, a radio frequency Unit, or the like. For simplicity, in the following embodiments, the heating element 210 may be disposed on the main board 220.

As shown in fig. 4 and 5, the heat generating element 210 may be fixed to the first housing 110 together with the main board 220 and may move with the first housing 110. The first end of the flexible heat sink 300 may be connected to the heat generating element 210 and accordingly may move with the first housing 110.

The second end of the flexible heat sink 300 may be attached to the second housing 120. When the first end of the flexible heat dissipation member 300 moves with the first housing 110 in a direction away from the second housing 120, the distance between the two ends of the flexible heat dissipation member 300 increases, and the flexible heat dissipation member 300 may be unfolded, for example, the flexible heat dissipation member 300 may be unfolded from a wound state or a folded state. At this time, the heat dissipation area of the flexible heat sink 300 may be increased.

When the first housing 110 moves toward the direction close to the second housing 120, the distance between the two ends of the flexible heat sink 300 decreases, and the flexible heat sink 300 may be folded and gathered under the restriction of the wall surface of the first accommodating cavity 130, or the flexible heat sink 300 may be wound on a predetermined reel under the traction of other mechanisms.

In this embodiment, when the first housing 110 and the second housing 120 move relatively, the flexible heat dissipation member 300 can be unfolded or folded, so that the heat dissipation area of the flexible heat dissipation member 300 can be matched with the size of the first accommodating cavity 130, and the heat dissipation efficiency of the electronic device is effectively improved. The first end of the flexible heat sink 300 is connected to the first housing 110 through the heating element 210, so that heat generated by the heating element 210 can be transferred to the flexible heat sink 300, and the heat dissipation efficiency is further improved.

As described above, the heat generating element 210 may be fixed on the first housing 110 together with the main board 220, and in order to improve the fixing strength between the main board 220 and the first housing 110, in one example, a main board bracket 230 may be further disposed in the first receiving cavity 130, and the main board 220 may be more reliably fixed with the first housing 110 by the main board bracket 230.

Alternatively, as shown in fig. 4 and 5, the electronic apparatus further includes a heat equalizing member 240, the heat equalizing member 240 is connected to the heat generating element 210, and the first end of the flexible heat sink 300 is connected to a side of the heat equalizing member 240 away from the heat generating element 210.

In this embodiment, the soaking member 240 may be a soaking plate or a heat pipe having a structure with high thermal conductivity. In practical applications, the flexible heat spreader 300 may be closely attached to the heat spreader 240. By providing the soaking member 240, the heat generated from the heat generating element 210 can be more uniformly conducted to the first end of the flexible heat sink 300, thereby contributing to an increase in the efficiency of heat conduction.

As described above, the second end of the flexible heat sink 300 may be connected to the second housing 120, and specifically, the second end of the flexible heat sink 300 may be directly connected to the second housing 120 or indirectly connected to the second housing 120 through another connector.

The construction in which the flexible heat sink 300 is directly attached to the second housing 120 will be exemplified below with reference to one application example.

In this application example, referring to fig. 4 and 5, flexible heat dissipation member 300 may include first heat dissipation fin 310 and second heat dissipation fin 320, which may be fixedly connected or integrally connected. The first heat dissipation plate 310 may be fixedly connected to the heat generating element 210, and the second heat dissipation plate 320 may be capable of being switched between a folded state and an unfolded state. It is easily understood that when the second fin 320 is in the folded state, it can be considered as the folded state described above.

The second heat sink 320 may be integrally located in the first receiving cavity 130, in a folded state, the second heat sink 320 is folded and received in the first receiving cavity 130, and a space for receiving the second heat sink 320 in the first receiving cavity 130 may be matched with a position of the second end of the second heat sink 320.

As shown in fig. 4, in the first state, the second heat sink 320 may be folded and accommodated in a space (referred to as a first space R) on one side of the main board 220 or the like, and the width of the first space R may be changed according to the movement of the first housing 110.

In some examples, the way of folding to store may be free folding; alternatively, the second heat dissipation fin 320 may have predetermined folds thereon, along which the second heat dissipation fin can be folded.

Of course, the above is some examples of the folding manner of the second heat dissipation fin 320, and in practical applications, the specific folding manner may be set as required.

It is easily understood that the heat radiating area of the second heat sink 320 is generally small in the folded state, but can be relatively reliably accommodated in the small first space.

As shown in fig. 5, as the first housing 110 moves away from the second housing 120, the width of the first space R increases, the second heat sink 320 can be continuously unfolded from the folded state to be converted into the unfolded state, and the heat dissipation area is correspondingly increased, so as to effectively improve the heat dissipation effect of the second heat sink 320.

In this embodiment, the second heat sink 320 is folded and received in the first receiving cavity 130 in the folded state, the receiving manner is relatively simple, and the assembly requirement between the flexible heat sink 300 and the second housing 120 is relatively low, which is helpful to reduce the assembly difficulty between the two.

Optionally, the electronic device further includes a connecting shaft 410, the connecting shaft 410 is disposed in the first accommodating cavity 130, and the second end of the flexible heat sink 300 is connected to the second housing 120 through the connecting shaft 410.

As shown in fig. 4 and 5, in the present embodiment, the second end of the flexible heat sink 300 may be connected to the second housing 120 by the connection shaft 410, so that the connection reliability between the flexible heat sink 300 and the second housing 120 may be improved by providing the flexible heat sink 300 with a sufficient attachment length through the connection shaft 410.

In one example, the second end of the flexible heat sink 300 and the connection shaft 410 may be fixedly connected, the connection shaft 410 and the second housing 120 are fixedly connected, and the flexible heat sink 300 may be folded and received near the connection shaft 410 in a folded state.

In this example, in combination with a practical application scenario, when the electronic device is a scroll screen mobile phone, an explosion diagram of the electronic device may be as shown in fig. 6.

The electronic device may include a first case 110, a second case 120, a spool screen 500, a first bracket 610, a second bracket 620, a flexible heat sink 300, and a connection shaft 410. As for the connection relationship between the above components, reference may be made to the description in the above embodiments, which is not repeated herein.

In addition, keys 700, such as a power on/off key 700 or a volume adjustment key 700, may be further disposed on the first casing 110 or the second casing 120, and the functions and connections of the keys 700 with other components of the electronic device are not described in detail herein.

In yet another example, the second end of the flexible heat sink 300 is connected to the connection shaft 410, the connection shaft 410 is rotatably connected to the second housing 120, and the second end of the flexible heat sink 300 may be wound on the connection shaft 410 or unwound from the connection shaft 410.

In other words, in this example, the second end of the flexible heat sink 300 may be wound or rotated out on the connection shaft 410 by the rotation of the connection shaft 410.

In still another example, as shown in fig. 7 to 9, the electronic device further includes a spring plate 430, one end of the spring plate 430 is fixedly connected to the connection shaft 410, and the other end of the spring plate 430 is fixedly connected to the second end of the flexible heat sink 300.

In this example, the second end of the flexible heat sink 300 is wound or rotated out on the connection shaft 410 by the deformation of the spring plate 430.

As indicated above, the electronic device may be a scroll screen handset, and accordingly the electronic device may include scroll screen 500, and there may be a curled portion of scroll screen 500. In one example, both axial ends of the connection shaft 410 are fixedly connected to the second housing 120, and the circumferential surface of the connection shaft 410 may be inscribed in the curled portion of the scroll screen 500.

As shown in fig. 4 to 5, a side of the second housing 120 facing the first receiving chamber 130 is provided with a curved surface with which an outer surface of the spool screen 500 may contact and may slide relatively. And the inner surface of the spool panel 500 may contact the circumferential surface of the connection shaft 410. Thus, the connecting shaft 410 and the second housing 120 may directly form a space for the sliding of the scroll screen 500, and when the first housing 110 moves relative to the second housing 120, the connecting shaft 410 may ensure that the second end of the scroll screen 500 is reliably attached to the first housing 110, and the scroll screen 500 may reliably cover the opening formed after the first housing 110 and the second housing 120 are enclosed.

Of course, in practical applications, a guide shaft may be separately provided for the scroll screen 500 to function as the connection shaft 410.

In one embodiment, the electronic device further comprises a sleeve 420, the sleeve 420 being fixedly connected with the second housing 120;

the sleeve 420 has a second receiving cavity 421 and an opening 422, the connecting shaft 410 is disposed in the second receiving cavity 421, and the second end of the flexible heat sink 300 can extend out of the sleeve 420 through the opening 422.

In this embodiment, the second end of the flexible heat sink 300 may be specifically wound around the connection shaft 410 inside the sleeve 420, the sleeve 420 may protect the flexible heat sink 300, and meanwhile, the openings 422 on the circumferential surface of the sleeve 420 may also provide a guiding function for the winding or the rolling of the flexible heat sink 300 on the connection shaft 410.

Due to the arrangement of the connection shaft 410 and the sleeve 420, the flexible heat sink 300 can be prevented from being distributed in the first accommodation cavity 130 too dispersedly to interfere with the movement of other components, so that the assembly compactness and the working reliability between the components in the electronic device can be improved.

In addition, in the case where the electronic device is a scroll screen handset, the outer surface of the sleeve 420 may also be in contact with

Fig. 7 is a schematic cross-sectional view of the electronic device with the flexible heat spreader 300 in a collapsed state, as shown in fig. 7. As can be seen from fig. 7, the first housing 110 and the second housing 120 are relatively close to each other, the first space R has a relatively small space, and the second end of the flexible heat sink 300 may be wound around the connection shaft 410.

Fig. 8 is a schematic cross-sectional view of the electronic device with the second end of the flexible heat spreader 300 in an unfolded state, as shown in fig. 8. As can be seen from fig. 8, the first housing 110 moves away from the second housing 120, and components such as the heat generating element 210, the main board 220, and the like move in synchronization with the first housing 110, so that the width of the first space R increases. The second end of the flexible heat sink 300 is turned out from the connection shaft 410 and reaches the outside of the sleeve 420 through the opening 422 on the circumferential surface of the sleeve 420, thereby obtaining a larger heat dissipation surface for dissipating heat from the heat generating element 210.

It can be seen that, due to the movement of the second housing 120 relative to the first housing 110, the size of the space in the first accommodating cavity 130 can be correspondingly adjusted, and the second end of the flexible heat sink 300 can be wound around the connecting shaft 410 or unfolded from the connecting shaft 410 along with the adjustment of the first accommodating cavity 130, so as to adjust the heat dissipation area, and fully utilize the space in the first accommodating cavity 130 to improve the heat dissipation effect.

In one possible embodiment, the connection shaft 410 may be rotatably connected to the second housing 120, and a motor may be provided to drive the connection shaft 410 to rotate by the motor to actively wind the second end of the flexible heat sink 300 around the sleeve 420 when the flexible heat sink 300 needs to be folded.

Of course, in other embodiments, a spring plate 430 is further disposed in the second receiving cavity 421, the connecting shaft 410 is fixedly connected to the second housing 120 or fixedly connected to the sleeve 420, and two ends of the spring plate 430 are respectively connected to the connecting shaft 410 and the second end of the flexible heat sink 300.

Fig. 9 is a schematic cross-sectional view of the assembled connection shaft 410, sleeve 420, spring plate 430 and flexible heat sink 300, as shown in fig. 9. The connection shaft 410 and the spring plate 430 may be disposed in the second receiving cavity 421 of the sleeve 420, wherein the connection shaft 410 may be fixed on the sleeve 420 or the second housing 120. Spring plate 430 may be disposed in a spiral line, and has one end connected to connecting shaft 410 and the other end connected to the second end of flexible heat sink 300.

When the flexible heat sink 300 is in the folded state, the spring piece 430 may be in a release state, and the second end of the flexible heat sink 300 is wound around the connection shaft 410. And when the first housing 110 moves in a direction away from the second housing 120, the flexible heat sink 300 is continuously pulled out from the opening 422 on the circumferential surface of the sleeve 420, thereby being unfolded. During this process, spring plate 430 may be deformed accordingly to accommodate the process of rotating flexible heat sink 300 out of connection shaft 410.

In the unfolded state of the flexible heat sink 300, the portion reaching the outside of the sleeve 420 is unfolded, the heat dissipation surface is increased, and the heat dissipation efficiency can be improved.

When the first housing 110 moves toward the direction close to the second housing 120, the flexible heat sink 300 may be continuously wound around the connection shaft 410 through the opening 422 on the circumferential surface of the sleeve 420 by the resilient force of the spring plate 430, thereby being switched to the first state.

Based on the above working process, in the present embodiment, the flexible heat sink 300 can be automatically wound on the connecting shaft 410 by the arrangement of the spring leaf 430, so that the flexible heat sink 300 is prevented from interfering with the operation of other components. The spring leaf 430 has a simple structure, and can effectively reduce the assembly difficulty and the manufacturing cost of the electronic equipment.

In the case that the electronic device is a scroll screen mobile phone, the sleeve 420 may contact the scroll screen 500 to limit the movement of the scroll screen 500. Meanwhile, the sleeve 420 needs to have a large outer diameter to accommodate the spring plate 430 and the connection shaft 410, etc., as described above, and accordingly, the sleeve 420 can be in better contact with the scroll screen 500, improving the movement reliability of the scroll screen 500.

In an application scenario, a driving structure may be disposed between the first casing 110 and the second casing 120, and the driving structure is configured to drive the first casing 110 and the second casing 120 to move relatively, for example, in a case that the electronic device is a scroll screen mobile phone, the driving structure may be configured to drive the first casing 110 and the second casing 120 to slide relatively.

The driving structure may be connected to a processor included in the electronic device, which may be one of the heat generating elements 210 described above. In addition, a temperature sensor for monitoring the temperature of the electronic device can be connected to the processor.

The processor may receive a temperature signal of the temperature sensor and control the driving structure based on the temperature signal, so as to move the first casing 110 and the second casing 120 relatively, adjust the first accommodating cavity 130, and switch the flexible heat sink 300 between the unfolded state and the folded state, thereby adjusting the heat dissipation capability.

For example, the electronic device is a mobile phone with a scroll screen, and when the temperature signal indicates that the temperature of the electronic device is too high, the processor controls the driving structure to make the first casing 110 and the second casing 120 away from each other, the flexible heat dissipation member 300 is switched to the unfolded state, and the heat dissipation capability is improved, so that the electronic device is rapidly cooled.

In the description herein, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like means 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 application. In this specification, the schematic representations of the terms used above 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.

While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.

Claims

1. An electronic device, comprising:

a first housing;

the second shell can move relative to the first shell, and the second shell and the first shell enclose to form an adjustable first accommodating cavity;

the heating element is arranged in the first accommodating cavity;

the flexible heat dissipation piece is arranged in the first accommodating cavity, a first end of the flexible heat dissipation piece is connected with the first shell, and a second end of the flexible heat dissipation piece is connected with the second shell;

2. The electronic device of claim 1, further comprising a connecting shaft disposed in the first receiving cavity, wherein the second end of the flexible heat sink is connected to the second housing through the connecting shaft.

3. The electronic device according to claim 2, wherein the connecting shaft is rotatably connected to the second housing, the second end of the flexible heat dissipating member is connected to the connecting shaft, and the flexible heat dissipating member is wound around the connecting shaft or unwound from the connecting shaft.

4. The electronic device according to claim 2, further comprising a spring plate, wherein one end of the spring plate is fixedly connected with the connecting shaft, and the other end of the spring plate is fixedly connected with the second end of the flexible heat dissipation member.

5. The electronic device of claim 3 or 4, further comprising a sleeve fixedly connected with the second housing;

the sleeve is provided with a second accommodating cavity and an opening which are communicated with each other, the connecting shaft is arranged in the second accommodating cavity, and the second end of the flexible heat radiating piece can extend out of the sleeve from the opening.

6. The electronic device of claim 1, further comprising a scroll screen, wherein a first end of the scroll screen is fixedly connected to the first housing, a second end of the scroll screen is movably connected to the second housing, and the scroll screen, the first housing, and the second housing together enclose the first accommodating cavity.

7. The electronic device of claim 6, further comprising a first bracket and a second bracket, wherein the first bracket and the second bracket are respectively fixedly connected to the first housing and the second housing, and the first bracket and the second bracket are used for supporting the scroll screen.

8. The electronic device of claim 1, wherein the heat generating component is fixedly coupled to the first housing, and wherein the first end of the flexible heat spreader is coupled to the first housing via the heat generating component.

9. The electronic apparatus according to claim 8, further comprising a heat spreader, the heat spreader being connected to the heat generating element, the flexible heat spreader being connected to a side of the heat spreader remote from the heat generating element.

10. The electronic device of claim 1, wherein the flexible heat spreader is a graphene sheet.