CN219019328U - Foldable device - Google Patents

Abstract

The embodiment of the application provides a collapsible equipment, first casing and second casing of this equipment are rotated through pivot mechanism and are connected, have first cavity between the flexible screen of equipment and the first casing, have the second cavity between with the second casing, have the third cavity with pivot mechanism between. The space that first cavity, second cavity and third cavity formed is equipped with flexible conducting strip in, and flexible conducting strip and first casing fastening connection, and pass the third cavity along flexible screen to extend to in the second cavity, flexible conducting strip and pivot mechanism, second casing and flexible screen all sliding fit with the part that pivot mechanism and second casing correspond, and flexible conducting strip and first casing, second casing and the unit that generates heat of equipment all heat and be connected. The heat on this application embodiment's the first casing and the second casing can mutually conduct, and the difference in temperature of first casing and second casing is little, and the risk that first casing or second casing appear overheated is less.

Description

Foldable device

Technical Field

The embodiment of the application relates to the technical field of electronic equipment, in particular to foldable equipment.

Background

With the development of electronic equipment technologies such as smart phones or tablet computers, the functions of electronic equipment are increasing. The larger the area of the display screen of the electronic device, the better the use experience of some functions of the electronic device can be. However, when the area of the display screen of the electronic device is large, the overall size of the electronic device is large, which causes inconvenient carrying of the electronic device. In order to facilitate carrying of electronic devices with larger display screen areas, in some electronic devices, flexible screens may be used for the display screen, and the electronic devices may be made into foldable devices.

In some related technologies, the foldable device includes a flexible screen, a rotating shaft mechanism, and two shells respectively installed at two sides of the rotating shaft mechanism, where the two shells are rotationally connected through the rotating shaft mechanism, so that the foldable device can be switched between a folded state and a flattened state, the flexible screen is installed on the two shells, the flexible screen can be folded and flattened under the driving of the two shells, at least one shell can be internally provided with a heating unit such as a camera and a motherboard module, and heat generated by the heating unit can be conducted to the shell where the heating unit is located, and the heat can be emitted to an external environment through the shell where the heating unit is located.

However, the foldable device of the related art is liable to cause a problem of overheating of a part of the housing.

Disclosure of Invention

The embodiment of the application provides a collapsible equipment, through setting up the flexible conducting strip that strides pivot mechanism and be connected with the casing heat conduction that makes the difference between the casing of difference, the heat on the casing that makes the difference is mutually conducted, and the heat that generates heat unit production in any casing all can dispel the heat through a plurality of casings, and the difference in temperature between the different casings is less, and overheated problem is difficult for appearing in each casing.

The application provides a collapsible equipment, including first casing, second casing, the unit that generates heat, pivot mechanism, flexible screen and flexible conducting strip, first casing and second casing rotate through pivot mechanism and are connected, are equipped with the unit that generates heat in at least one of first casing and second casing. The flexible screen comprises a first part, a second part and a third part, wherein the first part is arranged on the first shell, a first cavity is formed between the first part and the first shell, the second part is arranged on the second shell, a second cavity is formed between the second part and the second shell, the third part is opposite to the rotating shaft mechanism, a third cavity is formed between the third part and the rotating shaft mechanism, and two ends of the third cavity are respectively communicated with the first cavity and the second cavity. The flexible heat conducting fin is arranged in a space formed by the first cavity, the second cavity and the third cavity, at least part of the flexible heat conducting fin in the first cavity is fixedly connected with the first shell, the flexible heat conducting fin penetrates through the third cavity along the third part and extends into the second cavity, and the flexible heat conducting fin is in sliding fit with the third part, the rotating shaft mechanism and the second part and the second shell. The flexible heat conducting fin is in heat conducting connection with the heating unit, the first shell and the second shell.

The collapsible equipment of this embodiment is through setting up the flexible conducting strip that connects first casing and second casing heat conduction, and the heat on first casing and the second casing can be conducted each other, and the heat that generates heat the unit that generates heat in first casing and the second casing can dispel the heat to external environment together through first casing and second casing. In first casing and second casing, be equipped with the heat on the great heating element of calorific capacity on the heat can be transmitted to the heat less, on the lower another of temperature, the difference in temperature between first casing and the second casing is less, is equipped with the great heating element of calorific capacity on the difficult overheated problem of appearance, no longer need improve the heat dispersion who is equipped with the great heating element of calorific capacity through the bodiness conducting strip, can make flexible conducting strip lighter and thinner. In addition, the flexible heat conducting fin is in sliding fit with the third part, the rotating shaft mechanism and the second part and the second shell, the parts of the flexible heat conducting fin, which are positioned in the second cavity and the third cavity, are not fixed, the parts of the flexible heat conducting fin, which are positioned in the second cavity and the third cavity, can slide along the second part and the third part in the process of switching between the unfolding state and the folding state, so that the risk that the flexible heat conducting fin is pulled or compressed to wrinkle when the folding device is switched between the unfolding state and the folding state can be reduced, the flexible heat conducting fin is not easy to clamp in gaps between the rotating shaft mechanism and the first shell and the second shell, the opening and closing influence of the flexible heat conducting fin on the folding device can be reduced, in addition, the flexible heat conducting fin is smoother in all states of the folding device, and the influence on the display of a flexible screen can be reduced.

In one possible embodiment, the flexible thermally conductive sheet includes a graphite sheet portion positioned within the first chamber and fixedly connected to the first housing, and a lamination portion extending along the third portion through the third chamber and into the second chamber, the lamination portion being in sliding engagement with both the third portion and the spindle mechanism and with the second portion and the second housing. The laminated part comprises a graphite sheet layer and an elastic supporting layer which are overlapped, and the elastic supporting layer is fixedly connected with the graphite sheet layer.

In one possible embodiment, the end of the lamination portion connected to the graphite sheet portion is located in the first chamber, and at least part of the lamination portion located in the first chamber is fixedly connected to the first housing.

In one possible embodiment, the resilient support layer comprises a metal having a stiffness greater than the stiffness of the graphite sheet.

In one possible embodiment, the elastic support layer is fixedly attached to the side of the graphite sheet adjacent to the flexible screen.

In one possible embodiment, the resilient support layer includes a first end remote from the graphite sheet in a first direction, and the graphite sheet includes a second end remote from the graphite sheet in the first direction, the first end protruding from the second end. The second shell is fixedly connected with a Mylar, the Mylar is positioned in the second cavity, the Mylar is arranged between the first direction and the second end, at least part of the Mylar overlaps with the part of the elastic supporting layer protruding out of the second end in the thickness direction of the second shell, and the first end is in sliding fit with the Mylar. The first direction is the direction of the first shell towards the second shell when the foldable equipment is in a flattened state.

In one possible embodiment, the maillard is teflon maillard.

In one possible embodiment, the resilient support layer includes first and second sides opposite in the second direction, the graphite sheet layer includes third and fourth sides opposite in the second direction, the first side adjacent the third side, the second side adjacent the fourth side, the third side protruding from the first side, and the fourth side protruding from the second side. The width of the portion of the graphite sheet protruding from the first side in the second direction is smaller than the height of the second chamber in the thickness direction of the foldable apparatus, and smaller than the height of the third chamber in the thickness direction of the foldable apparatus. The width of the portion of the graphite sheet protruding from the second side in the second direction is smaller than the height of the second chamber in the thickness direction of the foldable apparatus, and smaller than the height of the third chamber in the thickness direction of the foldable apparatus. The second direction is the length extending direction of the rotating shaft mechanism.

In one possible embodiment, the graphite sheet is of unitary construction with the graphite sheet, the thickness of the graphite sheet being greater than the thickness of the graphite sheet.

In one possible embodiment, the thickness of the resilient support layer is less than the thickness of the graphite sheet.

In one possible embodiment, a first adhesive layer is provided between the graphite sheet and the elastic support layer, and the graphite sheet and the elastic support layer are adhesively fixed by the first adhesive layer.

In one possible embodiment, when the heat generating unit is provided in the first housing, the projection of the heat generating unit in the first housing thickness direction is located within the range of the projection of the portion of the flexible heat conductive sheet in the first chamber in the first housing thickness direction.

In one possible embodiment, a heat generating unit is provided within the first housing. When the heating unit is also arranged in the second shell, the heating value of the heating unit in the first shell is larger than that of the heating unit in the second shell.

In one possible embodiment, a lubricating medium is provided between the spindle means and the flexible heat conducting strip.

In one possible embodiment, a lubricating medium is provided between the third portion and the flexible heat conducting strip.

In one possible embodiment, a lubricating medium is provided between the spindle means and the flexible heat conducting strip and between the third part and the flexible heat conducting strip.

In one possible embodiment, at least a portion of the flexible thermally conductive sheet located within the first chamber is adhesively secured to the first housing by a second adhesive layer.

In one possible embodiment, a second adhesive layer is provided between the flexible heat-conducting strip and the first housing, and the flexible heat-conducting strip is adhesively fixed to the first housing by means of the second adhesive layer.

In one possible embodiment, a second adhesive layer is disposed between the flexible heat conducting strip and the heat generating unit in the first housing, and the flexible heat conducting strip is adhered and fixed to the heat generating unit in the first housing through the second adhesive layer, so that the flexible heat conducting strip is fastened and connected with the first housing through the second adhesive layer and the heat generating unit in the first housing.

In one possible embodiment, a second adhesive layer is disposed between the flexible heat conducting strip and the first housing and between the flexible heat conducting strip and the heat generating unit in the first housing, and the flexible heat conducting strip is respectively adhered and fixed with the first housing and the heat generating unit in the first housing through the second adhesive layer.

In one possible embodiment, the portion of the flexible heat conducting strip located in the first cavity is provided with a positioning hole, and the first shell is provided with a positioning protrusion corresponding to the positioning hole, and the positioning protrusion extends into the corresponding positioning hole.

In one possible embodiment, the first part is adhesively secured to the first housing by a first adhesive strip and the second part is adhesively secured to the second housing by a second adhesive strip. The first part, the first bonding strip and the first shell are provided with a first chamber, and the second part, the second bonding strip and the second shell are provided with a second chamber.

In one possible embodiment, the first adhesive strip is provided at an edge of the first portion and the second adhesive strip is provided at an edge of the second portion.

Drawings

Fig. 1 is a schematic view of a foldable device according to an embodiment of the present application in a folded state;

FIG. 2 is a schematic view of a foldable device according to an embodiment of the present application in a flattened state;

FIG. 3 is a schematic view of a side of a foldable device provided in an embodiment of the present application with a flexible screen in a flattened state;

FIG. 4 is a schematic view of still another foldable device provided in an embodiment of the present application after concealing a first rear cover when in a flattened state;

FIG. 5 is a schematic view of still another foldable device provided in an embodiment of the present application after concealing a flexible screen when in a flattened state;

FIG. 6 is a schematic view of yet another foldable device according to an embodiment of the present application in a folded state;

FIG. 7 is a schematic illustration of yet another foldable device provided in an intermediate state during switching between a folded state and a flattened state according to an embodiment of the present application;

FIG. 8 is a schematic view of yet another foldable device provided in an embodiment of the present application in a flattened state;

Fig. 9 is a schematic view of one side of a flexible heat conductive sheet of still another foldable apparatus provided in an embodiment of the present application in a thickness direction of the flexible heat conductive sheet;

fig. 10 is a schematic view of the other side of the flexible heat conductive sheet of the further foldable apparatus provided in the embodiment of the present application in the thickness direction of the flexible heat conductive sheet;

fig. 11 is a schematic view of a side of a junction of a graphite sheet portion and a lamination portion of a flexible heat conductive sheet of still another foldable device provided in an embodiment of the present application in a second direction;

fig. 12 is a schematic view of a side of a junction of a graphite sheet portion and a lamination portion of a flexible heat conductive sheet of still another foldable device according to an embodiment of the present application in a second direction;

FIG. 13 is a schematic view of a cross-section perpendicular to the second direction at a third portion and a stack of yet another foldable device provided in an embodiment of the present application;

FIG. 14 is an enlarged view of portion A of FIG. 5;

FIG. 15 is a schematic view of a foldable device according to an embodiment of the present application after concealing a flexible screen and a flexible heat conducting strip from a side provided with the flexible screen when the foldable device is in a flattened state;

FIG. 16 is a schematic view illustrating the cooperation between the laminate and the Mylar during the switching of the foldable device from the flattened state to the folded state according to the embodiment of the present application;

Fig. 17 is an enlarged view of the portion B in fig. 10;

FIG. 18 is a schematic view of a side of a foldable device provided in an embodiment of the present application with a flexible screen in a flattened state;

FIG. 19 is a schematic view of a side of a foldable device provided in an embodiment of the present application with a flexible screen in a flattened state;

FIG. 20 is a schematic view of a side of a foldable device provided in an embodiment of the present application with a flexible screen in a flattened state;

fig. 21 is a schematic view of a side of a foldable device provided in an embodiment of the present application with a flexible screen in a flattened state.

Reference numerals illustrate:

110. a first housing; 111. a first adhesive strip; 112. a first middle frame; 113. a first rear cover; 114. a first mounting plate;

120. a second housing; 121. a second adhesive strip; 122. a second middle frame; 123. a second rear cover; 124. a second mounting plate;

200. a spindle mechanism; 210. a spindle assembly; 220. a first folding component; 230. a second folding assembly;

300. a flexible screen; 310. a first portion; 320. a second portion; 330. a third section;

400. a heating unit;

510. a first chamber; 511. a second adhesive layer; 520. a second chamber; 530. a third chamber;

600. A flexible heat conductive sheet; 610. a graphite sheet portion; 611. positioning holes; 620. a lamination section; 621. a graphite sheet; 622. an elastic support layer; 623. a first end; 624. a second end; 625. a first side; 626. a second side; 627. a third side; 628. a fourth side; 629. a first adhesive layer;

700. a lubricating medium;

800. mylar.

Detailed Description

The terminology used in the description of the embodiments of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application, as will be described in detail with reference to the accompanying drawings.

The embodiment of the application provides foldable equipment, which can change the form of the equipment by folding and unfolding so as to meet the demands of users in different scenes. For example, when carried, folding may be performed to reduce the size of the foldable device; in use, the screen may be flattened to increase the size of the screen for display or manipulation. It is understood that the foldable device may also be referred to as a User Equipment (UE) or a terminal (terminal) or the like.

The foldable device provided by the embodiments of the present application may include, but is not limited to, a mobile terminal or a fixed terminal such as a tablet (portable android device, PAD), a personal digital assistant (personal digital assistant, PDA), a handheld device with a wireless communication function, a computing device, a vehicle-mounted device, a wearable device, a Virtual Reality (VR) terminal device, an augmented reality (augmented reality, AR) terminal device, a wireless terminal in industrial control (industrial control), a wireless terminal in unmanned driving (self driving), a wireless terminal in remote medical (remote media), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation security (transportation safety), a wireless terminal in smart city (smart city), a wireless terminal in smart home (smart home), and the like. In the embodiment of the present application, a handheld device with a wireless communication function is described as an example, and the handheld device with a wireless communication function may be a mobile phone.

Fig. 1 is a schematic view of a foldable device according to an embodiment of the present application in a folded state.

As shown in fig. 1, the foldable device provided in the embodiment of the present application includes a first housing 110, a second housing 120, and a rotating shaft mechanism 200, where the first housing 110 and the second housing 120 are respectively mounted on two sides of the rotating shaft mechanism 200, and the first housing 110 and the second housing 120 are rotatably connected through the rotating shaft mechanism 200, so that the foldable device can be switched between a flattened state and a folded state.

It will be appreciated that when the first housing 110 and the second housing 120 are rotated relative to each other to be stacked, the foldable device is in a folded state, in which the first housing 110 and the second housing 120 may be parallel to each other. It will be appreciated by those skilled in the art that when the collapsible device is in a flattened state, the two structural members may not be perfectly parallel to each other due to design tolerances, etc., allowing for some deviation. When the first housing 110 and the second housing 120 are relatively rotated to an angle of approximately 180 degrees, the foldable device is in a flattened state. It will be appreciated by those skilled in the art that the angle between two structural members referred to herein is approximately 180, and may not be absolute 180 due to design tolerances, etc., allowing for a few deviations, such as 165, 177, or 185. Of course, the foldable device also has an intermediate state during switching between the folded state and the flattened state.

For example, the first case 110 may include a first middle frame 112 and a first rear cover 113, the first rear cover 113 is fastened to one side of the first middle frame 112 in the thickness direction, the second case 120 may include a second middle frame 122 and a second rear cover 123, the second rear cover 123 is fastened to one side of the second middle frame 122 in the thickness direction, the first middle frame 112 and the second middle frame 113 are respectively mounted at both sides of the rotation shaft mechanism 200, and the first middle frame 112 and the second middle frame 113 are rotatably connected through the rotation shaft mechanism 200. When the foldable apparatus is in the flattened state, the first middle frame 112 and the second middle frame 122 form an angle of substantially 180 °, and the first rear cover 113 and the second rear cover 123 form an angle of substantially 180 °. When the foldable apparatus is in the folded state, the first middle frame 112 and the second middle frame 122 may be parallel to each other, the first rear cover 113 and the second rear cover 123 may be parallel to each other, and the first rear cover 113 is located at a side of the first middle frame 112 away from the second middle frame 122, and the second rear cover 123 is located at a side of the second middle frame 122 away from the first middle frame 112.

Fig. 2 is a schematic view of a foldable device according to an embodiment of the present application in a flattened state.

The foldable device provided in the embodiment of the present application further includes a flexible screen 300, and the flexible screen 300 is mounted on the first housing 110 and the second housing 120.

It will be appreciated that the hinge mechanism 200 may be used to support the flexible screen 300 after the flexible screen 300 is mounted on the first housing 110 and the second housing 120, with the flexible screen 300 mounted on the same side surface of the first housing 110 and the second housing 120.

In the example in which the first case 110 includes the first middle frame 112 and the first rear cover 113, and the second case 120 includes the second middle frame 122 and the second rear cover 123, the side of the first middle frame 112 facing away from the first rear cover 113 is used to mount the flexible screen 300, and the side of the second middle frame 122 facing away from the second rear cover 123 is used to mount the flexible screen 300.

The flexible screen 300 may be used for image display and also may be used as a virtual keyboard for inputting information, and the functions of the flexible screen 300 may be determined according to specific application scenarios.

By way of example, the flexible screen 300 may be an organic light-emitting diode (OLED) display screen, an active-matrix organic light-emitting diode (AMOLED) display screen, a mini-light-emitting diode (mini organic light-emitting diode) display screen, a micro-light-emitting diode (micro organic light-emitting diode) display screen, a quantum dot light-emitting diode (quantum dot light-emitting diode) display screen, or the like.

In the embodiment of the present application, the flexible screen 300 includes a first portion 310, a second portion 320, and a third portion 330, where the first portion 310 is mounted on the first housing 110, the second portion 320 is mounted on the second housing 120, and the third portion 330 is opposite to the spindle mechanism 200. It will be appreciated that the first portion 310 may be attached to the first housing 110 by bonding, clamping, etc., the second portion 320 may be attached to the second housing 120 by bonding, clamping, etc., and that two sides of the third portion 330 may be connected to the first portion 310 and the second portion 320, respectively.

Specifically, in an example in which the first housing 110 may include the first middle frame 112 and/or the first rear cover 113, and the second housing 120 may include the second middle frame 122 and/or the second rear cover 123, the first portion 310 may be mounted to a side of the first middle frame 112 remote from the first rear cover 113, and the second portion 320 may be mounted to a side of the second middle frame 122 remote from the second rear cover 123.

It will be appreciated that when the foldable device is switched from the flattened state to the folded state, the first portion 310 and the second portion 320 may rotate with the first housing 110 and the second housing 120, the third portion 330 may bend, and the first portion 310 and the second portion 320 may not bend, or the bending angle may be small, and may be nearly flat. When the foldable device is switched from the folded state to the flattened state, the folded third portion 330 flattens out such that the first portion 310, the second portion 320 and the third portion 330 lie in the same plane (allowing for a few deviations).

Fig. 3 is a schematic view of a side of a foldable device provided in an embodiment of the present application, where the side is provided with a flexible screen, in a flattened state.

As shown in fig. 3, at least one of the first housing 110 and the second housing 120 of the foldable device provided in the embodiment of the present application is further provided with a heat generating unit 400.

It is understood that the heat generating unit 400 may be disposed on a circuit board in the first housing 110, and the heat generating unit 400 may not be disposed in the second housing 120; the heat generating unit 400 may be disposed on a circuit board in the second housing 120, and the heat generating unit 400 may not be disposed in the first housing 110; the heat generating unit 400 may also be provided at both the circuit board in the first housing 110 and the circuit board in the second housing 120.

Fig. 4 is a schematic view of still another foldable device provided in an embodiment of the present application after hiding a first rear cover when the foldable device is in a flattened state.

As shown in fig. 4, in an example in which the first case 110 includes the first middle frame 112 and the first rear cover 113, the heat generating unit 400 in the first case 110 may be disposed in a space formed by the first middle frame 112 and the first rear cover 113, a circuit board in the first case 110 in which the heat generating unit 400 is disposed may be mounted in a receiving cavity of the first middle frame 112, and the heat generating unit 400 may be thermally connected with the first middle frame 112 and the first rear cover 113. Specifically, the heat generating unit 400 within the first case 110 may be thermally connected to the first middle frame 112 and the first rear cover 113 by being in contact with or close to at least one of the first middle frame 112 and the first rear cover 113.

In an example in which the second case 120 includes the second middle frame 122 and the second rear cover 123, the heat generating unit 400 in the second case 120 may be disposed in a space formed by the second middle frame 122 and the second rear cover 123, a circuit board in the second case 120 in which the heat generating unit 400 is disposed may be mounted in a receiving cavity of the second middle frame 122, and the heat generating unit 400 may be thermally connected with the second middle frame 122 and the second rear cover 123. Specifically, the heat generating unit 400 within the second case 120 may be thermally connected to the second middle frame 122 and the second rear cover 123 by being in contact with or close to at least one of the second middle frame 122 and the second rear cover 123.

The heat generating unit 400 is a component or a module composed of a plurality of components that generate heat. For example, the heat generating unit 400 may be a chip such as a central processing unit (central processing unit, CPU), a graphics processor (graphics processing unit, GPU), or may be a device such as a power source, a resistor, a camera, or may be a motherboard module integrated with various components. One or more heat generating units 400 may be disposed in the first housing 110, and one or more heat generating units 400 may be disposed in the second housing 120.

When components are disposed in the cavities of the first housing 110 and the second housing 120, the components in the first housing 110 and the second housing 120 may be electrically connected through a flexible circuit board, which may extend from the first housing 110 to the second housing 120 through the rotation shaft mechanism 200, so that the components in the cavities of the first housing 110 and the second housing 120 are electrically connected. In an example in which the first case 110 includes the first middle frame 112 and the first rear cover 113, and the second case 120 includes the second middle frame 122 and the second rear cover 123, the flexible circuit board may be disposed at a side of the first middle frame 112 and the second middle frame 122 remote from the flexible screen 300. In other words, the first and second middle frames 112 and 122 may be located between the flexible screen 300 and the flexible circuit board.

In some related art foldable apparatuses, heat generated by the heat generating unit 400 disposed in the cavity of the first housing 110 is transferred to the first housing 110, and then is dissipated to the external environment through the first housing 110, and heat generated by the heat generating unit 400 disposed in the cavity of the second housing 120 is transferred to the second housing 120, and then is dissipated to the external environment through the second housing 120. Among some of the foldable apparatuses in which the heat conductive sheets are provided in the first and second cases 110 and 120, respectively, the related art foldable apparatuses independently provide the heat conductive sheets in the first and second cases 110 and 120, respectively. In other words, the thermally conductive sheet in the first housing 110 does not pass through or extend across the spindle mechanism 200 into the second housing 120, and the thermally conductive sheet in the second housing 120 does not pass through or extend across the spindle mechanism 200 into the first housing 110. The heat conductive sheet in the first housing 110 may be used to rapidly and uniformly transfer heat generated from the heat generating unit 400 in the first housing 110 to various locations on the first housing 110, and the heat conductive sheet in the second housing 120 may be used to rapidly and uniformly transfer heat generated from the heat generating unit 400 in the second housing 120 to various locations on the second housing 120. Whether or not the heat conductive sheet is provided in the foldable apparatus, the heat of the first housing 110 and the heat of the second housing 120 cannot be mutually conducted, the heat generated by the heat generating unit 400 in the first housing 110 is dissipated through the first housing 110, the heat generated by the heat generating unit 400 in the second housing 120 is dissipated through the second housing 120, and when the heat of the first housing 110 or the second housing 120 is high, insufficient heat dissipation capability may occur. In the foldable apparatus, the heat generated by the heat generating units 400 in the first and second housings 110 and 120 is often not uniform, and the heat generated by one of the heat generating units 400 having a larger heat generation amount is larger and the temperature is higher, and the heat generated by the other is smaller and the temperature is lower; or when the heat generating unit 400 is not provided in one of the first and second cases 110 and 120, the heat generating unit 400 is provided with one of a larger amount of heat and a higher temperature and the other of a smaller amount of heat and a lower temperature. Since the heat conducting capacity of the first housing 110 and the second housing 120 is limited in the prior art, the temperature difference between the first housing 110 and the second housing 120 is large, and in the first housing 110 and the second housing 120, the problem of overheating easily occurs in the case of large heat and high temperature.

For example, the heat generated by the motherboard module during operation is large, and when the motherboard module is disposed in the first housing 110, the heat generated by the motherboard module cannot be effectively dissipated through the first housing 110 and the second housing 120, and the first housing 110 is prone to overheat.

Fig. 5 is a schematic view of still another foldable device provided in an embodiment of the present application after concealing a flexible screen when the foldable device is in a flattened state.

Based on this, as shown in fig. 5, the foldable apparatus provided in the embodiment of the present application further includes a flexible heat conductive sheet 600. It is understood that the flexible heat conductive sheet 600 is a heat conductive sheet having a bendable property. The flexible heat conductive sheet 600 may be a metal sheet such as a thin copper sheet or a thin aluminum sheet, or may be a heat conductive sheet having a composite structural layer such as graphite or heat conductive rubber, and for example, the flexible heat conductive sheet 600 may be a heat conductive sheet including a graphite layer and an elastic metal layer.

Fig. 6 is a schematic view of still another foldable device provided in an embodiment of the present application in a folded state, fig. 7 is a schematic view of still another foldable device provided in an embodiment of the present application in an intermediate state during a switching process between a folded state and a flattened state, and fig. 8 is a schematic view of still another foldable device provided in an embodiment of the present application in a flattened state.

As shown in fig. 6 to 8, in the embodiment of the present application, a first chamber 510 is provided between the first portion 310 of the flexible screen 300 and the first housing 110, a second chamber 520 is provided between the second portion 320 of the flexible screen 300 and the second housing 120, a third chamber 530 is provided between the third portion 330 of the flexible screen 300 and the spindle mechanism 200, and both ends of the third chamber 530 are respectively communicated with the first chamber 510 and the second chamber 520. The flexible heat conducting strip 600 is disposed in a space formed by the first chamber 510, the second chamber 520 and the third chamber 530, at least a portion of the flexible heat conducting strip 600 disposed in the first chamber 510 is fixedly connected with the first housing 110, the flexible heat conducting strip 600 passes through the third chamber 530 along the third portion 330 and extends into the second chamber 520, and the flexible heat conducting strip 600 is slidably engaged with both the third portion 330 and the spindle mechanism 200 and the second portion 320 and the second housing 120. The flexible heat conductive sheet 600 is thermally connected to the heat generating unit 400, the first case 110, and the second case 120.

It is understood that the flexible heat conductive sheet 600 may be in contact with the first housing 110 or disposed close to the first housing 110 such that the flexible heat conductive sheet 600 is in heat conductive connection with the first housing 110; the flexible heat conductive sheet 600 may be in contact with the second housing 120 or disposed close to the second housing 120 such that the flexible heat conductive sheet 600 is thermally connected with the second housing 120. The first and second cases 110 and 120 are thermally connected by the flexible thermally conductive sheet 600, and heat on the first and second cases 110 and 120 can be transferred to each other by the flexible thermally conductive sheet 600.

When the heat generating unit 400 is provided in the first housing 110, the heat generating unit 400 in the first housing 110 may be brought into contact with the flexible heat conductive sheet 600 or disposed close to the flexible heat conductive sheet 600 so that the heat generating unit 400 in the first housing 110 is thermally connected to the flexible heat conductive sheet 600. At this time, the heat generating unit 400 in the first housing 110 may be thermally connected to the first housing 110 through the flexible thermally conductive sheet 600.

The heat generating unit 400 in the first housing 110 may be in contact with the first housing 110 or disposed close to the first housing 110, so that the heat generating unit 400 in the first housing 110 is thermally connected to the first housing 110, and the heat generating unit 400 in the first housing 110 may be thermally connected to the flexible thermally conductive sheet 600 through the first housing 110.

The heat generating unit 400 in the first housing 110 may also be brought into contact with the flexible heat conductive sheet 600 or disposed close to the flexible heat conductive sheet 600, and the heat generating unit 400 in the first housing 110 may be brought into contact with the first housing 110 or disposed close to the first housing 110, so that the heat generating unit 400 in the first housing 110 is thermally connected to the first housing 110 and the flexible heat conductive sheet 600, respectively.

In other words, the heat generating unit 400 in the first housing 110 may transfer heat to the first housing 110 first, and transfer heat to the flexible heat conductive sheet 600 through the first housing 110; the heat generating unit 400 in the first housing 110 may transfer heat to the flexible heat conductive sheet 600 first, and transfer heat to the first housing 110 through the flexible heat conductive sheet 600. The heat generating unit 400 within the first housing 110 may also transfer heat to the flexible heat conductive sheet 600 and the first housing 110, respectively.

Similarly, when the heat generating unit 400 is provided in the second housing 120, the heat generating unit 400 in the second housing 120 may be brought into contact with the flexible heat conductive sheet 600 or disposed close to the flexible heat conductive sheet 600 so that the heat generating unit 400 in the second housing 120 is thermally connected to the flexible heat conductive sheet 600. At this time, the heat generating unit 400 in the second housing 120 may be thermally connected to the second housing 120 through the flexible thermally conductive sheet 600.

The heat generating unit 400 in the second housing 120 may be in contact with the second housing 120 or disposed close to the second housing 120, so that the heat generating unit 400 in the second housing 120 is thermally connected to the second housing 120, and the heat generating unit 400 in the second housing 120 may be thermally connected to the flexible thermally conductive sheet 600 through the second housing 120.

The heat generating unit 400 in the second housing 120 may also be brought into contact with the flexible heat conductive sheet 600 or disposed close to the flexible heat conductive sheet 600, and the heat generating unit 400 in the second housing 120 may be brought into contact with the second housing 120 or disposed close to the second housing 120, so that the heat generating unit 400 in the second housing 120 is thermally connected to the second housing 120 and the flexible heat conductive sheet 600, respectively.

In other words, the heat generating unit 400 in the second housing 120 may transfer heat to the second housing 120 first, and transfer heat to the flexible heat conductive sheet 600 through the second housing 120; the heat generating unit 400 in the second housing 120 may transfer heat to the flexible heat conductive sheet 600 first, and transfer heat to the second housing 120 through the flexible heat conductive sheet 600. The heat generating unit 400 in the second housing 120 may also transfer heat to the flexible heat conductive sheet 600 and the second housing 120, respectively.

It should be noted that, the projection of the heat generating unit 400 in the thickness direction of the foldable device may be entirely or partially located within the range of the projection of the flexible heat conductive sheet 600 in the thickness direction of the foldable device.

When the heat generating unit 400 in the first housing 110 is thermally connected to the flexible thermally conductive sheet 600 through the first housing 110, the projection of the heat generating unit 400 in the first housing 110 in the thickness direction of the foldable device may not be within the range of the projection of the flexible thermally conductive sheet 600 in the thickness direction of the foldable device.

When the heat generating unit 400 in the second housing 120 is thermally connected to the flexible thermally conductive sheet 600 through the second housing 120, the projection of the heat generating unit 400 in the second housing 120 in the thickness direction of the foldable device may not be within the range of the projection of the flexible thermally conductive sheet 600 in the thickness direction of the foldable device.

It will be appreciated that the end of the flexible thermally conductive sheet 600 within the second chamber 520 is a free end and is reciprocally slidable between the second portion 320 and the second housing 120.

In this way, the flexible heat conductive sheet 600 thermally connects the first case 110 and the second case 120, heat on the first case 110 and the second case 120 can be mutually conducted, and heat generated by the heat generating unit 400 in the first case 110 and the second case 120 can be radiated to the external environment through the first case 110 and the second case 120 together. In the first case 110 and the second case 120, the heat provided with the heat generating unit 400 having a large heat generation amount can be transferred to the other having a small heat generation amount and a low temperature, the temperature difference between the first case 110 and the second case 120 is small, the one having a large heat generation amount of the heat generating unit 400 is not easy to overheat, the heat radiation performance of the heat generating unit 400 having a large heat generation amount is not required to be improved by thickening the heat conducting fin, and the flexible heat conducting fin 600 can be made thinner. In addition, the flexible heat conducting strip 600 is in sliding fit with the third portion 330 and the rotating shaft mechanism 200 and with the second portion 320 and the second housing 120, the portions of the flexible heat conducting strip 600 located in the second chamber 520 and the third chamber 530 are not fixed, the portions of the flexible heat conducting strip 600 located in the second chamber 520 and the third chamber 530 can slide along the second portion 320 and the third portion 330 in the switching process of the unfolding state and the folding state, the risk that the flexible heat conducting strip 600 is pulled or compressed and wrinkled when the folding device is switched between the unfolding state and the folding state can be reduced, the flexible heat conducting strip 600 is not easy to clamp into the gaps between the rotating shaft mechanism 200 and the first housing 110 and the second housing 120, the influence of the flexible heat conducting strip 600 on the folding device can be reduced, in addition, the flexible heat conducting strip 600 is smooth in all states of the folding device, and the influence on the display of the flexible screen 300 can be reduced.

It will be appreciated that in the example where the first case 110 includes the first middle frame 112 and the first rear cover 113, and the second case 120 includes the second middle frame 122 and the second rear cover 123, the side of the first middle frame 112 facing the first portion 310 may be spaced apart from the first portion 310, the side of the second middle frame 122 facing the second portion 320 may be spaced apart from the second portion 320, the side of the first middle frame 112 facing the first portion 310 and the first portion 310 may form the first chamber 510, the side of the second middle frame 122 facing the second portion 320 and the second portion 320 may form the second chamber 520, the first portion 310 and the second portion 320 may be connected to the first middle frame 112 and the second middle frame 122 by a connection frame, an adhesive strip, or the like, and may be spaced apart from the first chamber 510 and the second chamber 520, respectively, from the first middle frame 112 and the second middle frame 122; alternatively, a stepped structure for forming the first chamber 510 with the first portion 310 may be provided at a side of the first middle frame 112 facing the first portion 310, and a stepped structure for forming the second chamber 520 with the second portion 320 may be provided at a side of the second middle frame 112 facing the second portion 320.

When the first and second middle frames 112 and 122 are provided with a flexible circuit board at a side remote from the flexible screen 300, the first and second middle frames 112 and 122 may be positioned between the flexible circuit board and the flexible heat conductive sheet 600.

It should be noted that the foldable device may include a first housing 110 and a second housing 120 disposed on two sides of a spindle mechanism 200, where the first housing 110 and the second housing 120 may rotate toward each other to be stacked and back to the same plane (allowing for a small deviation), and the foldable device may be folded into two layers.

The foldable device may also include two second housings 120 disposed in parallel, where a first housing 110 is disposed between the two second housings 120, and each second housing 120 is rotatably connected to one side adjacent to the first housing 110 through a hinge mechanism 200, where both the second housings 120 may rotate relative to the first housing 110 toward each other to form a stack, and both the second housings 120 may also rotate relative to the first housing 110 away from each other to be coplanar with the first housing 110 (allowing for a small deviation), where the foldable device may be folded into three layers. Correspondingly, the flexible screen 300 includes two second portions 320 respectively mounted on the two second housings 120 and two third portions 330 respectively opposite the two spindle mechanisms 200, each second housing 120 having a second chamber 520 therebetween and the second portion 320 mounted thereon, and each spindle mechanism 200 having a third chamber 530 therebetween and the third portion 330 opposite thereto. Both ends of the flexible heat conducting strip 600 may extend into the two second chambers 520 at both sides of the first chamber 510 along the two third portions 330, respectively, the flexible heat conducting strip 600 is slidably matched with the two third portions 330, the two rotating shaft mechanisms 200, the two second portions 320 and the two second housings 120, and the flexible heat conducting strip 600 is thermally connected with the two second housings 120.

As shown in fig. 5-8, in some examples, the first housing 110 may further include a first mounting plate 114 disposed on a side of the first middle frame 112 facing the first portion 310, the first mounting plate 114 is fixedly connected to the first middle frame 112, the first portion 310 is mounted on the first mounting plate 114, the first mounting plate 114 is spaced from the first portion 310, a first chamber 510 is formed between the first mounting plate 114 and the first portion 310, a portion of the flexible heat conductive sheet 600 located in the first chamber 510 is fixedly connected to the first mounting plate 114, and the first mounting plate 114 is thermally connected to the first middle frame 112, so that the first middle frame 112 is thermally connected to the flexible heat conductive sheet 600.

The second housing 120 may further include a second mounting plate 124 disposed on a side of the second middle frame 122 facing the second portion 320, the second mounting plate 124 is fixedly connected to the second middle frame 122, the second portion 320 is mounted on the second mounting plate 124, the second mounting plate 124 is spaced from the second portion 320, a second chamber 520 is formed between the second mounting plate 124 and the second portion 320, a portion of the flexible heat conducting strip 600 located in the second chamber 520 is slidably matched with the second mounting plate 124, and the second mounting plate 124 is thermally connected to the second middle frame 122, so that the second middle frame 122 is thermally connected to the flexible heat conducting strip 600.

In this way, the flexible heat conducting strip 600 is convenient to be fastened to the first housing 110, the flexible heat conducting strip 600 is flat after being bonded on the first mounting board 114, and the pulling of the flexible heat conducting strip 600 can be reduced. In addition, the flexible heat conductive sheet 600 slides with the second housing 120 through the second mounting plate 124.

It is understood that the heat generating unit 400 in the first housing 110 may be disposed in a space formed by the first mounting plate 114, the first middle frame 112 and the first rear cover 113, and the heat generating unit 400 in the first housing 110 may be thermally connected to the flexible heat conductive sheet 600 through the first middle frame 112 and the first mounting plate 114. The heat generating unit 400 in the second housing 120 may be disposed in a space formed by the second mounting plate 124, the second middle frame 122, and the second rear cover 123, and the heat generating unit 400 in the second housing 120 may be thermally connected to the flexible heat conductive sheet 600 through the second middle frame 122, the second mounting plate 124.

It should be noted that, the first middle frame 112 and the first mounting plate 114 may be an integral structure; the second middle frame 122 and the second mounting portion 124 may be of a unitary structure.

In some embodiments, when the heat generating unit 400 is provided in the first housing 110, the projection of the heat generating unit 400 in the first housing 110 in the thickness direction of the first housing 110 is located within the range of the projection of the portion of the flexible heat conductive sheet 600 in the first chamber 510 in the thickness direction of the first housing 110.

In this way, the heat conduction efficiency between the heat generating unit 400 in the first housing 110 and the flexible heat conductive sheet 600 is high, and the heat generated by the heat generating unit 400 in the first housing 110 can be efficiently transferred to the flexible heat conductive sheet 600 to transfer the heat to the second housing 120 through the flexible heat conductive sheet 600.

As shown in fig. 5 to 8, the spindle mechanism 200 may include a spindle assembly 210, a first folding assembly 220 and a second folding assembly 230, the first folding assembly 220 and the second folding assembly 230 are respectively mounted on opposite sides of the spindle assembly 210, the first folding assembly 220 and the second folding assembly 230 may be respectively rotatably connected with the spindle assembly 210, the first housing 110 may be fixedly connected or slidably connected with the first folding assembly 220, the second housing 120 may be fixedly connected or slidably connected with the second folding assembly 230, the first housing 110 may be rotatably connected with the spindle assembly 210 through the first folding assembly 220, the second housing 120 may be rotatably connected with the spindle assembly 210 through the second folding assembly 230, the third portion 330 is opposite to the first folding assembly 220, the spindle assembly 210 and the second folding assembly 230, the first folding assembly 220, the spindle assembly 210 and the second folding assembly 230 may respectively support corresponding positions on the third portion 330, a third chamber 530 is provided between the first folding assembly 220, the spindle assembly 210 and the second folding assembly 230 and the third portion 330, and a flexible heat conducting sheet 600 is slidably engaged with the first folding assembly 210 and the first folding assembly 230.

In the embodiment of the present application, the heat generating unit 400 is provided in the first housing 110. When the heat generating unit 400 is also provided in the second housing 120, the heat generating unit 400 in the first housing 110 generates a larger amount of heat than the heat generating unit 400 in the second housing 120.

In this way, the heat conduction connection between the flexible heat conducting strip 600 and the first housing 110 is relatively stable, so that the heat generated by the heat generating unit 400 with relatively large heat productivity in the first housing 110 can be quickly and effectively conducted to the flexible heat conducting strip 600, and the heat can be conducted to the second housing and uniformly dispersed to the first housing 110 through the flexible heat conducting strip 600.

As shown in fig. 6 to 8, at least a portion of the flexible heat conductive sheet 600 located in the first chamber 510 may be adhesively fixed to the first housing 110 by the second adhesive layer 511.

In this way, the flexible heat conducting strip 600 is easy to fix with the first housing 110, and is stable after being adhered and fixed, and the flexible heat conducting strip 600 and the first housing 110 are not easy to generate relative movement.

It is understood that the second adhesive layer 511 may be formed of a thermally conductive adhesive.

In some examples, a second adhesive layer 511 is provided between the flexible heat conductive sheet 600 and the first case 110, and the flexible heat conductive sheet 600 is adhered and fixed to the first case 110 by the second adhesive layer 511.

In this way, the fastening connection between the flexible heat conductive sheet 600 and the first housing 110 is relatively stable, the flexible heat conductive sheet 600 and the first housing 110 are not easily displaced, and the heat conductive connection between the flexible heat conductive sheet 600 and the first housing 110 is stable. At this time, the flexible heat conductive sheet 600 may be in contact with the heat generating unit 400 in the first housing 110, or the flexible heat conductive sheet 600 may be brought close to the heat generating unit 400 in the first housing 110, so that heat generated by the heat generating unit 400 in the first housing 110 may be transferred to the flexible heat conductive sheet 600; the heat generating unit 400 in the first housing 110 may be brought into contact with the first housing 110 or close to the first housing 110, and the heat generated by the heat generating unit 400 in the first housing 110 may be transferred to the flexible heat conductive sheet 600 through the first housing 110.

In an example where the first case includes the first middle frame 112 and the first mounting plate 114, a second adhesive layer 511 may be provided between the flexible heat conductive sheet 600 and the first mounting plate 114, and the flexible heat conductive sheet 600 may be adhered and fixed to the first mounting plate 114 by the second adhesive layer 511.

In some examples, a second adhesive layer 511 may be disposed between the flexible heat conductive sheet 600 and the heat generating unit 400 in the first case 110, and the flexible heat conductive sheet 600 may be adhered and fixed to the heat generating unit 400 in the first case 110 by the second adhesive layer 511, so that the flexible heat conductive sheet 600 is fastened and connected to the first case 110 by the second adhesive layer 511 and the heat generating unit 400 in the first case 110.

In this way, the relative position between the flexible heat conductive sheet 600 and the heat generating unit 400 in the first housing 110 is stable, which is beneficial to continuously and stably transferring the heat generated by the heat generating unit 400 in the first housing 110 to the flexible heat conductive sheet 600. At this time, the flexible heat conductive sheet 600 may be in contact with the first housing 110, or the flexible heat conductive sheet 600 may be brought close to the first housing 110 so that heat on the flexible heat conductive sheet 600 may be transferred to the first housing 110. The heat generating unit 400 in the first housing 110 may be in contact with or close to the first housing 110 such that the heat generating unit 400 in the first housing 110 is thermally connected to the first housing, and the heat generating unit 400 in the first housing 110 may also be thermally connected to the first housing 110 through the flexible thermally conductive sheet 600.

In some examples, a second adhesive layer 511 is disposed between the flexible heat conductive sheet 600 and the first case 110 and between the flexible heat conductive sheet 600 and the heat generating unit 400 in the first case 110, and the flexible heat conductive sheet 600 is adhered and fixed to the first case 110 and the heat generating unit 400 in the first case 110 by the second adhesive layer 511, respectively.

It is understood that the flexible heat conductive sheet 600 is adjacent to the first housing 110 and the heat generating unit 400 in the first housing 110, and the flexible heat conductive sheet 600 may exchange heat with the first housing 110 and the heat generating unit 400 in the first housing 110, and when the second adhesive layer 511 is formed of a heat conductive adhesive, the flexible heat conductive sheet 600 may also exchange heat with the first housing 110 and the heat generating unit 400 through the second adhesive layer 511.

In this way, the fastening connection between the flexible heat conducting strip 600 and the first housing 110 is relatively stable, the flexible heat conducting strip 600 and the first housing 110 are not easy to shift, and the relative position between the flexible heat conducting strip 600 and the heating unit 400 is stable, so that the heat generated by the heating unit 400 in the first housing 110 is continuously and stably transferred to the flexible heat conducting strip 600, and the heat on the flexible heat conducting strip 600 is also continuously and stably transferred to the first housing 110.

Fig. 9 is a schematic view of one side of a flexible heat conducting sheet of another foldable device in a thickness direction of the flexible heat conducting sheet provided in an embodiment of the present application, fig. 10 is a schematic view of the other side of the flexible heat conducting sheet of another foldable device in the thickness direction of the flexible heat conducting sheet provided in an embodiment of the present application, and fig. 11 is a schematic view of one side of a junction between a graphite sheet portion and a lamination portion of the flexible heat conducting sheet of another foldable device provided in an embodiment of the present application in a second direction. The first direction is a direction in which the first housing 110 faces the second housing 120 when the foldable apparatus is in the flattened state, and the second direction is a length extending direction of the spindle mechanism 200.

As shown in fig. 9-11 and referring to fig. 5-8, in the present embodiment, the flexible heat conductive sheet 600 includes a graphite sheet portion 610 and a lamination portion 620 distributed along the first direction, the graphite sheet portion 610 is located in the first chamber 510 and is fixedly connected with the first housing 110, the lamination portion 620 passes through the third chamber 530 along the third portion 330 and extends into the second chamber 520, and the lamination portion 620 is slidably engaged with both the third portion 330 and the spindle mechanism 200 and with the second portion 320 and the second housing 120. Wherein the lamination portion 620 includes a stacked graphite sheet layer 621 and an elastic support layer 622, and the elastic support layer 622 is fastened to the graphite sheet layer 621.

It is understood that the graphite sheet 610 and the graphite sheet 621 may be of unitary construction.

In this way, the good heat conducting performance of graphite can be fully utilized, the heat conducting efficiency of the flexible heat conducting sheet 600 is higher, the heat radiating performance of the foldable equipment is improved, and the flexible heat conducting sheet 600 can be lighter and thinner. The lamination portion 620 includes a graphite sheet layer 621 and an elastic supporting layer 622, where the elastic supporting layer 622 can support the graphite sheet layer 621, so that the graphite sheet layer 621 is flattened and can drive the graphite sheet layer 621 to slide, thus further reducing the risk of wrinkling of the graphite sheet layer 621 during sliding, and the flexible heat conducting sheet 600 is not easy to be clamped into the gap between the rotating shaft mechanism 200 and the first and second shells 110 and 120, so as to reduce the influence of the flexible heat conducting sheet 600 on the folding and unfolding of the foldable device. In addition, the flexible heat conductive sheet 600 is smoother in each state of the foldable device, and the influence on the display of the flexible screen 300 can be reduced.

It will be appreciated that the resilient support layer 622 may flex with the third portion 330 when the foldable device is switched from the flattened state to the folded state, and may return to the flattened state with the third portion 330 when the foldable device is switched from the folded state to the flattened state. The elastic support layer 622 may include elastic plastic or elastic metal, etc.

In the embodiment of the present application, the end of the lamination portion 620 connected to the graphite sheet portion 610 is located in the first chamber 510, and at least a portion of the lamination portion 620 located in the first chamber 510 is fixedly connected to the first housing 110. In this way, the risk of damage to the graphite sheet 610 or delamination of the laminate 620 due to interaction forces between the end of the laminate 620 connecting the graphite sheet 610 and the graphite sheet 610 may be reduced.

In some embodiments, the portion of the lamination portion 620 located in the first chamber 510 is fixedly connected to the first middle frame 112 or the first mounting plate 114, and when the foldable device moves between the flattened state and the folded state, the portion of the lamination portion 620 fixedly connected to the first middle frame 112 or the first mounting plate 114 may not be bent, which is beneficial to improving the reliability of the portion of the lamination portion 620 fixedly connected to the first middle frame 112 or the first mounting plate 114.

In the present embodiment, the resilient support layer 622 comprises a metal having a stiffness greater than the stiffness of the graphite sheet.

In this way, the elastic supporting layer 622 can also have a certain heat conducting effect, which is beneficial to improving the heat conducting performance of the flexible heat conducting fin 600. In addition, the surface of the elastic support layer 622 is easily made smooth, facilitating the sliding of the lamination portion 620. In addition, the elastic support layer 622 has stable performance and high strength, and is not easy to damage in the process of reciprocating sliding.

It is understood that the metal may be a copper sheet, an aluminum sheet, a steel sheet, or the like.

As shown in fig. 9 and 10, in the embodiment of the present application, a positioning hole 611 is formed in a portion of the flexible heat conductive sheet 600 located in the first chamber 510, and a positioning protrusion (not shown) corresponding to the positioning hole 611 is provided in the first housing 110 and extends into the corresponding positioning hole 611.

It is understood that the positioning protrusion may be disposed in the first cavity 510, and the positioning protrusion is fastened to the first housing 110, and the flexible heat conducting strip 600 and the first housing 110 may be positioned after the positioning protrusion extends into the corresponding positioning hole 611.

In this way, the flexible heat conducting strip 600 can be accurately installed at the preset position of the first housing 110 during assembly, and the flexible heat conducting strip 600 is more stable and is not easy to shift after being assembled on the first housing 110.

It is understood that in an example in which the flexible heat conductive sheet 600 may include the graphite sheet portion 610 and the lamination portion 620, the positioning hole 611 may be opened to the graphite sheet portion 610. The portion of the lamination portion 620 located in the first chamber 510 may also be provided with positioning holes 611, and a plurality of positioning holes 611 may be provided on the flexible heat conductive sheet 600, and the positioning holes 611 may be through holes.

In an example where the first housing 110 includes a first mounting plate, the positioning protrusion may be provided on the first mounting plate.

As shown in fig. 9-11, in the embodiment of the present application, the graphite sheet 610 and the graphite sheet 621 are a unitary structure, and the thickness of the graphite sheet 610 may be greater than the thickness of the graphite sheet 621.

In this way, the elastic support layer 622 is advantageously provided, and the thickness of the lamination portion 620 is advantageously reduced, so that the sliding assembly of the lamination portion 620 in the second chamber 520 and the third chamber 530 is facilitated, and the limitation of the internal space of the second chamber 520 and the third chamber 530 can be reduced.

It will be appreciated that the graphite sheet portion 610 may be formed at the uncut position by cutting one side of a single piece of graphite sheet to form the graphite sheet layer 621 at the cut thinned position.

As shown in fig. 11, in the embodiment of the present application, the thickness of the elastic support layer 622 is smaller than the thickness of the graphite sheet 621.

In this way, the heat conduction efficiency of the lamination portion 620 is high, which is advantageous for improving the heat dissipation performance of the foldable device.

In the embodiment of the present application, a first adhesive layer 629 is provided between the graphite sheet layer 621 and the elastic support layer 622, and the graphite sheet layer 621 and the elastic support layer 622 are adhesively fixed by the first adhesive layer 629.

Thus, the graphite sheet 621 and the elastic support layer 622 are easily fixed, and are firmly bonded and fixed, and are not easily displaced. The elastic support layer 622 is beneficial to supporting the graphite sheet 621, and the graphite sheet 621 is not easy to wrinkle.

It is understood that the overlapping positions of the graphite sheet 621 and the elastic support layer 622 are provided with the first adhesive layer 629, and are adhered and fixed by the first adhesive layer 629, and the first adhesive layer 629 may be formed of a heat conductive adhesive.

In some examples, the thickness of the graphite sheet 610 is equal to the thickness of the laminate 620.

In this way, the flexible heat conductive sheet 600 is smoother, and the risk of the flexible heat conductive sheet 600 affecting the display of the flexible screen 300 can be reduced.

Illustratively, the thickness of the graphite sheet 610 may be 0.1mm, with the thickness of the graphite sheet 621 being 0.07mm, the thickness of the first adhesive layer 629 being 0.01mm, and the thickness of the elastic support layer 622 being 0.02mm.

Illustratively, the thickness of the graphite sheet 610 may be 0.12mm, with the thickness of the graphite sheet 621 being 0.08mm, the thickness of the first adhesive layer 629 being 0.01mm, and the thickness of the elastic support layer 622 being 0.03mm.

Fig. 12 is a schematic view of a side of a junction of a graphite sheet portion and a lamination portion of a flexible heat conductive sheet of yet another foldable device according to an embodiment of the present application in a second direction.

As shown in fig. 12, in some examples, the thickness of the graphite sheet portion 610 is greater than the thickness of the laminate portion 620.

In this way, the restriction of the inner space of the second chamber 520 and the third chamber 530 can be reduced, facilitating the sliding fit of the flexible heat conductive sheet 600 with the second portion 320, the third portion 330, the second housing 120 and the rotation shaft mechanism 200.

Illustratively, the thickness of the graphite sheet 610 may be 0.1mm, with the thickness of the graphite sheet 621 being 0.06mm, the thickness of the first adhesive layer 629 being 0.01mm, and the thickness of the elastic support layer 622 being 0.02mm.

Illustratively, the thickness of the graphite sheet 610 may be 0.12mm, with the thickness of the graphite sheet 621 being 0.08mm, the thickness of the first adhesive layer 629 being 0.01mm, and the thickness of the elastic support layer 622 being 0.02mm.

It will be appreciated that the thickness of the graphite sheet 610 may be determined by the height of the first chamber 510 in the thickness direction of the collapsible device, the thickness of the laminate 620 may be determined by the height of the second chamber 520 and the third chamber 530 in the thickness direction of the collapsible device, and the thicknesses of the graphite sheet 621 and the elastic support layer 622 may be determined by the thickness of the laminate 620, the desired thermal conductivity and bending property of the laminate 620.

In some examples, the first housing 110 is provided with a first sinking stage on a side facing the first portion 310, the second housing 120 is provided with a second sinking stage on a side facing the second portion 320, the spindle mechanism 200 is provided with a third sinking stage on a side facing the third portion 330, a first chamber 510 is formed between the first sinking stage and the first portion 310, a second chamber 520 is formed between the second sinking stage and the second portion 320, a third chamber 530 is formed between the third sinking stage and the third portion 330, and at least a portion of the flexible thermally conductive sheet 600 is disposed on the first, second, and third sinking stages. In some embodiments, at least a portion of stack 620 is located at the second counter and/or the third counter. When the foldable device moves between the flattened state and the folded state, the lamination portion 620 slides relative to the second housing and/or the rotating shaft mechanism, and by providing the sinking table, the lamination portion is limited in a sliding manner, which is beneficial to improving the structural reliability of the lamination portion. In this way, the risk of the flexible heat conductive sheet 600 affecting the display of the flexible screen 300 can also be reduced.

Fig. 13 is a schematic view of a cross-section perpendicular to the second direction at a third portion and a lamination of yet another foldable device provided in an embodiment of the present application.

As shown in fig. 13, and referring to fig. 6-8, in an embodiment of the present application, a resilient support layer 622 is securely attached to the side of the graphite sheet 621 adjacent the flexible screen 300.

In this way, the graphite sheet 621 is adjacent to the second case 120, which is advantageous in improving the heat conduction efficiency between the flexible heat conductive sheet 600 and the second case 120.

As shown in fig. 13, in the embodiment of the present application, a lubrication medium 700 for reducing friction between the flexible heat conductive sheet 600 and the third portion 330 and/or the rotation shaft mechanism 200 is provided in the third chamber 530. In this way, sliding of the flexible heat conductive sheet 600 is facilitated.

It is understood that the lubricating medium 700 may be grease, a lubricating film, or the like.

In some examples, a lubrication medium 700 is provided between the spindle mechanism 200 and the flexible thermally conductive sheet 600.

In this way, the risk of jamming of the spindle mechanism 200 against sliding of the flexible heat conducting strip 600 can be reduced.

In some examples, a lubrication medium 700 is disposed between the third portion 330 and the flexible thermally conductive sheet 600.

In this way, the influence of the flexible heat conductive sheet 600 on the flexible screen 300 during sliding can be reduced.

In some examples, a lubrication medium 700 is provided between the spindle mechanism 200 and the flexible thermally conductive sheet 600 and between the third portion 330 and the flexible thermally conductive sheet 600.

In this way, the friction between the flexible heat conducting strip 600 and the third portion 330 and the rotating shaft mechanism 200 is smaller, which is beneficial to the sliding of the flexible heat conducting strip 600, and the risk of affecting the display of the flexible screen 300 is smaller.

Fig. 14 is an enlarged view of a portion a in fig. 5.

As shown in fig. 14, and referring to fig. 9, in an embodiment of the present application, the resilient support layer 622 includes a first end 623 remote from the graphite sheet 610 in a first direction, and the graphite sheet 621 includes a second end 624 remote from the graphite sheet 610 in the first direction, the first end 623 protruding from the second end 624.

Fig. 15 is a schematic view of a side of a foldable device provided in an embodiment of the present application, where the side provided with a flexible screen is hidden after the flexible screen and a flexible heat conducting fin are in a flattened state, and fig. 16 is a schematic view of cooperation between a lamination portion and a mailer in a process of switching the foldable device from the flattened state to the folded state.

As shown in fig. 15 and 16, and referring to fig. 14, the second housing 120 is fixedly connected with the mailer 800, the mailer 800 is located in the second chamber 520, the mailer 800 is spaced from the second end 624 in the first direction, at least part of the mailer 800 overlaps with a portion of the elastic support layer 622 protruding from the second end 624 in the thickness direction of the second housing 120, and the first end 623 is in sliding fit with the mailer 800.

It will be appreciated that when the foldable device is in the folded state, the flattened state, and the intermediate state during switching between the folded state and the flattened state, the mailer 800 is disposed at a distance from the second end 624 in the first direction, and at least a portion of the mailer 800 overlaps a portion of the elastic support layer 622 protruding from the second end 624 in the thickness direction of the second housing 120.

The mylar 800 may be disposed at an end of the second housing 120 remote from the rotation shaft mechanism 200 in the first direction.

In this way, in the process of sliding relative to the second housing 120, the first end 623 contacts the mailer 800, and does not contact the second housing 120, so that the risk of abnormal sound caused by the first end 623 contacting the second housing 120 can be reduced.

It should be noted that the thickness of the mailer 600 may be smaller than the thickness of the graphite sheet 621.

In an embodiment of the present application, the maillard 800 may be teflon maillard. Thus, the teflon maillard has self-lubricating property, so that friction between the elastic supporting layer 622 and the maillard 800 can be reduced, and sliding of the flexible heat conducting fin 600 is facilitated.

Fig. 17 is an enlarged view of a portion B in fig. 10.

As shown in fig. 17, in the embodiment of the present application, the elastic support layer 622 includes a first side 625 and a second side 626 opposite in the second direction, the graphite sheet layer 621 includes a third side 627 and a fourth side 628 opposite in the second direction, the first side 625 is adjacent to the third side 627, the second side 626 is adjacent to the fourth side 628, the third side 627 protrudes from the first side 625, and the fourth side 628 protrudes from the second side 626. The portion of the graphite sheet 621 protruding from the first side 625 has a width in the second direction smaller than the height of the second chamber 520 in the thickness direction of the foldable apparatus and smaller than the height of the third chamber 530 in the thickness direction of the foldable apparatus. The portion of the graphite sheet 621 protruding from the second side 626 has a width in the second direction smaller than the height of the second chamber 520 in the thickness direction of the foldable apparatus and smaller than the height of the third chamber 530 in the thickness direction of the foldable apparatus.

In this way, the portion of the graphite sheet 621 protruding from the first side 625 and the portion protruding from the second side 626 may serve to block the elastic supporting layer 622 from touching the second housing 120 and/or the rotating shaft mechanism 200 at two sides of the second direction, so that the risk of abnormal sound caused by the elastic supporting layer 622 touching the second housing 120 and/or the rotating shaft mechanism 200 at two sides of the second direction may be reduced.

It will be appreciated that the portion of the graphite sheet 621 protruding from the first side 625 and the portion protruding from the second side 626 are fixedly connected with the elastic support layer 622 through the overlapping portion of the graphite sheet 621 and the elastic support layer 622, the width of the portion of the graphite sheet 621 protruding from the first side 625 and the width of the portion protruding from the second side 626 are both narrower in the second direction, the portion of the elastic support layer 622 protruding from the first side 625 and the portion protruding from the second side 626 move together under the driving of the elastic support layer 622 during the sliding process, and even if the portion of the graphite sheet 621 protruding from the first side 625 and the portion protruding from the second side 626 generate wrinkles, the portion of the graphite sheet 621 protruding from the first side 625 and the portion protruding from the second side 626 are not easy to squeeze the flexible screen 300, so that the risk of affecting the display of the flexible screen 300 is small.

Fig. 18 is a schematic view of a side of a foldable device provided in an embodiment of the present application with a flexible screen in a flattened state.

As shown in fig. 18, and referring to fig. 5, in the embodiment of the present application, the first portion 310 is adhesively fixed to the first case 110 by the first adhesive tape 111, and the second portion 320 is adhesively fixed to the second case 120 by the second adhesive tape 121. A first chamber 510 is provided between the first portion 310, the first adhesive strip 111 and the first housing 110, and a second chamber 520 is provided between the second portion 320, the second adhesive strip 121 and the second housing 120.

In this way, the first adhesive strip 111 may adhesively fix the first portion 310 to the first housing 110, and the first adhesive strip 111 may space the first portion 310 and the first housing 110 apart from the first chamber 510 for accommodating the flexible sheet 300, the second adhesive strip 121 may adhesively fix the second portion 320 to the second housing 120, and the second adhesive strip 121 may space the second portion 320 and the second housing 120 apart from the second chamber 520 for sliding the flexible sheet 300, without separately providing a sink stand or the like to form the first chamber 510 and the second chamber 520 for mounting the flexible sheet 600 with the flexible sheet 300, which may make the structure of the foldable apparatus simpler and the foldable apparatus lighter and thinner.

It is understood that the thickness of the first adhesive stripe 111 may be greater than the thickness of the portion of the flexible heat conductive sheet 600 within the first chamber 510. Illustratively, the first adhesive stripe 111 may be 0.2mm thicker than the portion of the flexible heat conductive sheet 600 within the first chamber 510, for example, the thickness of the portion of the flexible heat conductive sheet 600 within the first chamber 510 may be 0.1mm, and the thickness of the first adhesive stripe 111 may be 0.3mm.

The thickness of the second adhesive stripes 121 may be greater than the thickness of the portion of the flexible heat conductive sheet 600 within the second chamber 520. Illustratively, the second adhesive stripes 121 may be 0.2mm thicker than the portions of the flexible thermally conductive sheet 600 within the second chamber 520, for example, the portions of the flexible thermally conductive sheet 600 within the second chamber 520 may be 0.1mm thick, and the thickness of the second adhesive stripes 121 may be 0.3mm.

In an example in which the first housing 110 includes the first mounting plate 114, the first portion 310 may be adhesively secured to the first mounting plate 114 by the first adhesive strip 111, and a first chamber 510 may be formed between the first mounting plate 114, the first adhesive strip 111, and the first portion 310. In an example in which the second housing 120 includes the second mounting plate 124, the second portion 320 may be adhesively secured to the second mounting plate 124 by the second adhesive strip 121, and a second chamber 520 may be formed between the second mounting plate 124, the second adhesive strip 121, and the second portion 320.

In the embodiment of the present application, the first adhesive strip 111 is disposed at an edge of the first portion 310, and the second adhesive strip 121 is disposed at an edge of the second portion 320.

In this way, the first chamber 510 and the second chamber 520 have larger dimensions, which is advantageous for increasing the size of the sliding portion of the flexible screen 300 in the second chamber 520 and the portion fastened in the first chamber 510, and for improving the heat dissipation efficiency of the foldable device.

Fig. 19 is a schematic view of a side of a foldable device provided in an embodiment of the present application with a flexible screen in a flattened state.

As shown in fig. 19, in some examples, the portions of the flexible thermally conductive sheet 600 located within the second and third chambers 520, 530 may include multiple segments that are spaced apart along the axial direction of the spindle mechanism 200 and that are parallel to each other.

In an example in which the flexible heat conductive sheet 600 includes the graphite sheet portion 610 and the lamination portions 620, the flexible heat conductive sheet 600 may include a plurality of lamination portions 620 spaced apart along the axial direction of the rotation shaft mechanism 200 and parallel to each other, and one end of each lamination portion 620 is connected to the graphite sheet portion 610.

In this way, the space of the second chamber 520 and the third chamber 530 can be fully utilized to arrange the flexible heat conductive sheet 600, which is beneficial to improving the heat conductive performance between the flexible heat conductive sheet 600 and the second housing 120, and the number of the arranged flexible heat conductive sheets 600 is less, and the reliability is higher.

Fig. 20 is a schematic view of a side of a foldable device provided in an embodiment of the present application with a flexible screen in a flattened state.

As shown in fig. 20, in some examples in which the flexible heat conductive sheet 600 includes a plurality of laminated portions 620, one end of each laminated portion 620 of the flexible heat conductive sheet 600 connected to the graphite sheet portion 610 is located in the first chamber 510, at least a portion of each laminated portion 620 located in the first chamber 510 is fixedly connected to the first housing 110, and the portion of each laminated portion 620 fixedly connected to the first housing 110 may be integrally connected. In this way, the risk of damage to the graphite sheet 610 due to uneven stress generated in the graphite sheet 610 by the plurality of stacked portions 620 to which the graphite sheet 610 is connected can be reduced.

Fig. 21 is a schematic view of a side of a foldable device provided in an embodiment of the present application with a flexible screen in a flattened state.

As shown in fig. 21, in some examples, the collapsible device may include a plurality of flexible thermally conductive sheets 600 distributed along the axial direction of the spindle mechanism 200. In this way, the limitation of the space of the first chamber 510 can be reduced, which is advantageous in that the space of the first chamber 510 is fully utilized to arrange the flexible heat conductive sheet 600, and in that the heat conductive property between the flexible heat conductive sheet 600 and the first housing 110 is improved.

In the description of the embodiments of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, indirectly connected through an intermediary, or may be in communication with each other between two elements or in an interaction relationship between two elements. The specific meaning of the above terms in the embodiments of the present application will be understood by those of ordinary skill in the art according to the specific circumstances.

The terms first, second, third, fourth and the like in the description and in the claims of embodiments of the application and in the above-described figures, if any, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the embodiments of the present application, and are not limited thereto; although embodiments of the present application have been described in detail with reference to the foregoing embodiments, it will be appreciated by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims (18)

1. A foldable apparatus characterized by comprising a first housing (110), a second housing (120), a heat generating unit (400), a rotation shaft mechanism (200), a flexible screen (300) and a flexible heat conducting sheet (600), wherein the first housing (110) and the second housing (120) are rotatably connected through the rotation shaft mechanism (200), and the heat generating unit (400) is provided in at least one of the first housing (110) and the second housing (120);

the flexible screen (300) comprises a first part (310), a second part (320) and a third part (330), wherein the first part (310) is installed on the first shell (110), a first cavity (510) is arranged between the first part (310) and the first shell (110), the second part (320) is installed on the second shell (120), a second cavity (520) is arranged between the second part (320) and the second shell (120), the third part (330) is opposite to the rotating shaft mechanism (200), a third cavity (530) is arranged between the third part (330) and the rotating shaft mechanism (200), and two ends of the third cavity (530) are respectively communicated with the first cavity (510) and the second cavity (520);

The flexible heat conducting fin (600) is arranged in a space formed by the first chamber (510), the second chamber (520) and the third chamber (530), at least part of the flexible heat conducting fin (600) positioned in the first chamber (510) is fixedly connected with the first shell (110), the flexible heat conducting fin (600) passes through the third chamber (530) along the third part (330) and extends into the second chamber (520), and the flexible heat conducting fin (600) is in sliding fit with the third part (330) and the rotating shaft mechanism (200) and with the second part (320) and the second shell (120);

the flexible heat conducting fin (600) is in heat conducting connection with the heating unit (400), the first shell (110) and the second shell (120).

2. The collapsible device of claim 1, wherein the flexible thermally conductive sheet (600) comprises a graphite sheet portion (610) and a laminate portion (620), the graphite sheet portion (610) being located within the first chamber (510) and being securely connected with the first housing (110), the laminate portion (620) passing through the third chamber (530) along the third portion (330) and extending into the second chamber (520), the laminate portion (620) being in sliding engagement with both the third portion (330) and the spindle mechanism (200) and with both the second portion (320) and the second housing (120);

Wherein the lamination part (620) comprises a graphite sheet layer (621) and an elastic support layer (622) which are overlapped, and the elastic support layer (622) is fixedly connected with the graphite sheet layer (621).

3. The collapsible device of claim 2, wherein an end of the lamination portion (620) connected to the graphite sheet portion (610) is located within the first chamber (510), at least a portion of the lamination portion (620) located within the first chamber (510) being securely connected to the first housing (110).

4. The collapsible device of claim 2, wherein the resilient support layer (622) comprises a metal having a stiffness that is greater than the stiffness of the graphite sheet (621).

5. A collapsible device according to claim 2, wherein the resilient support layer (622) is fastened to the side of the graphite sheet (621) adjacent to the flexible screen (300).

6. The collapsible device of claim 5, wherein the resilient support layer (622) comprises a first end (623) remote from the graphite sheet (610) in a first direction, the graphite sheet (621) comprises a second end (624) remote from the graphite sheet (610) in the first direction, the first end (623) protruding from the second end (624);

The second shell (120) is fixedly connected with a Mylar (800), the Mylar (800) is positioned in the second cavity (520), the Mylar (800) is arranged at intervals with the second end (624) in the first direction, at least part of the Mylar (800) is overlapped with the part of the elastic supporting layer (622) protruding out of the second end (624) in the thickness direction of the second shell (120), and the first end (623) is in sliding fit with the Mylar (800);

wherein the first direction is a direction in which the first housing (110) faces the second housing (120) when the foldable apparatus is in a flattened state.

7. The collapsible device of claim 6 wherein the mylar (800) is teflon mylar.

8. The collapsible device of claim 2, wherein the resilient support layer (622) comprises a first side (625) and a second side (626) opposite in a second direction, the sheet of graphite (621) comprising a third side (627) and a fourth side (628) opposite in the second direction, the first side (625) being adjacent to the third side (627), the second side (626) being adjacent to the fourth side (628), the third side (627) protruding from the first side (625), the fourth side (628) protruding from the second side (626);

A width of a portion of the graphite sheet (621) protruding from the first side (625) in the second direction is smaller than a height of the second chamber (520) in a thickness direction of the foldable apparatus and smaller than a height of the third chamber (530) in the thickness direction of the foldable apparatus;

a width of a portion of the graphite sheet (621) protruding from the second side (626) in the second direction is smaller than a height of the second chamber (520) in a thickness direction of the foldable apparatus and smaller than a height of the third chamber (530) in the thickness direction of the foldable apparatus;

wherein the second direction is the length extension direction of the rotating shaft mechanism (200).

9. The collapsible device of claim 2, wherein the graphite sheet (610) is of unitary construction with the graphite sheet (621), the thickness of the graphite sheet (610) being greater than the thickness of the graphite sheet (621).

10. The collapsible device of claim 2, wherein the thickness of the resilient support layer (622) is less than the thickness of the graphite sheet (621).

11. The collapsible device according to claim 2, wherein a first adhesive layer (629) is provided between the graphite sheet (621) and the elastic support layer (622), the graphite sheet (621) and the elastic support layer (622) being adhesively secured by the first adhesive layer (629).

12. The foldable device according to any one of claims 1 to 11, wherein when the heat generating unit (400) is provided in the first housing (110), a projection of the heat generating unit (400) in the first housing (110) in a thickness direction of the first housing (110) is located within a range of a projection of a portion of the flexible heat conductive sheet (600) in the first chamber (510) in the thickness direction of the first housing (110).

13. The foldable device according to any of claims 1-11, wherein the heat generating unit (400) is provided within the first housing (110);

when the heating unit (400) is also arranged in the second shell (120), the heating amount of the heating unit (400) in the first shell (110) is larger than the heating amount of the heating unit (400) in the second shell (120) in operation.

14. The collapsible device according to any one of claims 1-11, wherein a lubrication medium (700) is provided between the spindle means (200) and the flexible heat conducting fin (600);

alternatively, a lubricating medium (700) is arranged between the third part (330) and the flexible heat conducting fin (600);

or, a lubricating medium (700) is arranged between the rotating shaft mechanism (200) and the flexible heat conducting sheet (600) and between the third part (330) and the flexible heat conducting sheet (600).

15. The foldable device according to any one of claims 1-11, wherein at least a portion of the flexible thermally conductive sheet (600) located within the first chamber (510) is adhesively secured to the first housing (110) by a second adhesive layer (511).

16. The foldable device according to any one of claims 1-11, wherein the portion of the flexible heat conducting strip (600) located in the first chamber (510) is provided with a positioning hole (611), and the first housing (110) is provided with a positioning protrusion corresponding to the positioning hole (611), and the positioning protrusion extends into the corresponding positioning hole (611).

17. The foldable device according to any of claims 1-11, wherein the first part (310) is adhesively secured to the first housing (110) by a first adhesive strip (111), and the second part (320) is adhesively secured to the second housing (120) by a second adhesive strip (121);

the first chamber (510) is arranged among the first part (310), the first bonding strip (111) and the first shell (110), and the second chamber (520) is arranged among the second part (320), the second bonding strip (121) and the second shell (120).

18. The foldable device according to claim 17, wherein the first adhesive strip (111) is provided at an edge of the first portion (310) and the second adhesive strip (121) is provided at an edge of the second portion (320).

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