WO2017186083A1 - Rear shell and mobile terminal - Google Patents

Abstract

Disclosed in the present invention is a rear shell, and the rear shell comprises a shell body and a heat absorption and storage member; the heat absorption and storage member is provided on the shell body, and the heat absorption and storage member includes a heat absorption and storage material having properties of heat absorption and storage functions; the heat absorption and storage material is used to absorb the heat from the shell body and store the absorbed heat. By providing the heat absorption and storage member on the shell body of the rear shell as provided by the present invention, the heat absorption and storage member, which includes a heat absorption and storage material having heat absorption and storage functions, is capable of absorbing heat from the shell body and storing the heat within itself, and when the temperature of the shell body is lowered, dissipating the stored heat into the air, thereby reducing the amount of heat in the shell body, thereby allowing a circuit board and a mobile terminal having the rear shell to have better heat dissipation performance, improved use reliability, as well as reduced impact of heat on the shell body and the mobile terminal. The present invention also provides a mobile terminal.

Description

Rear case and mobile terminal

The present invention claims priority to the priority of the application Serial No. 201610286904.4, filed on Apr. 29, 2016, the disclosure of which is incorporated herein by reference.

Technical field

The present invention relates to the field of electronic devices, and more particularly to a rear case and a mobile terminal.

Background technique

With the development of the mobile phone industry, the configuration of mobile phones is getting higher and higher, the central processing unit (CPU) is getting higher and higher, and the power consumption is getting larger and larger, which causes the heat generated by the mobile phone to increase accordingly. Failure to control or transfer will have two aspects: 1. The temperature of the mobile phone chip is too high, resulting in slower operation of the mobile phone, even jamming, affecting the use of the mobile phone; 2. The temperature of the mobile phone chip is transmitted to the mobile phone case. As a result, the temperature of the outer casing is high, and problems such as hot hands and hot ears may occur when used.

In order to solve the problem of heat generation of the mobile phone, the heat-generating graphite sheet is generally disposed on the inner wall of the casing or the shielding cover of the mobile phone, and the heat-dissipating graphite sheet dissipates heat along the periphery to play the role of soaking and heat dissipation, but the inventor implements the above technology. During the scheme, it was found that the location of the heat-dissipating graphite sheet was limited by the position, and the heat-dissipating graphite sheet could not be directly dissipated, and the heat-dissipating graphite sheet was immediately cooled. At this time, the overall temperature of the mobile phone may be high, and the instantaneous heat dissipation may cause The temperature of the outer casing of the mobile phone is higher, so that the heat of the mobile phone cannot be better dissipated.

Summary of the invention

It is an object of the present invention to provide a rear case and a mobile terminal capable of reducing the influence of heat generation.

In order to solve the above technical problem, the present invention provides a rear case for being disposed between a front case assembly and a rear cover of a mobile terminal, and for forming between the rear case and the front case assembly. Arrange The accommodating space of the component and the battery, the rear case includes a shell body and a heat absorbing heat storage member, the heat absorbing heat storage member is disposed on the shell body, and the heat absorbing heat storage member includes heat absorption and storage A thermally functional material property of an endothermic heat storage material for absorbing heat from the shell, and the endothermic heat storage material stores the absorbed heat.

The embodiment of the invention further provides a mobile terminal, including a back shell.

DRAWINGS

In order to more clearly illustrate the technical solutions of the present invention, the drawings used in the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present invention, which are common in the art. For the technicians, other drawings can be obtained based on these drawings without paying for creative labor.

1 is a schematic view of a rear case according to Embodiment 1 of the present invention;

Figure 1a is a cross-sectional view of the rear case shown in Figure 1;

2 is a cross-sectional view of a rear case according to a second embodiment of the present invention;

Figure 3 is a cross-sectional view of a rear case according to a third embodiment of the present invention;

4 is a schematic diagram of a mobile terminal according to Embodiment 4 of the present invention.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described in the following with reference to the accompanying drawings.

The mobile terminal according to the embodiment of the present invention may be any device having communication and storage functions, such as a tablet computer, a mobile phone, an e-reader, a remote controller, a personal computer (PC), a notebook computer, an in-vehicle device, and a network television. A smart device with network capabilities such as wearable devices.

Referring to FIG. 1 and FIG. 1a together, FIG. 1 is a schematic structural diagram of a rear case 100 according to a first embodiment of the present invention. The rear case 100 includes a shell body 1 and an endothermic heat storage member 2, and an endothermic heat storage member 2 Disposed on the shell body 1, the heat absorbing heat storage member 2 comprises an endothermic heat storage material having material properties of heat absorption and heat storage function, and the heat absorbing heat storage material is used for absorbing heat on the shell body 1 and absorbing heat storage. The hot material stores the absorbed heat.

In the present embodiment, the rear case 100 is disposed between the front case assembly and the rear cover of the mobile terminal, and an accommodation space for accommodating components and a battery is formed between the rear case 100 and the front case assembly, that is, When mobile When the rear cover is opened, the battery is covered by the rear case 100, and the battery is not directly seen, but the rear case 100 is directly seen. The material of the rear case 100 may be plastic.

It can be understood that the shell body 1 is in the shape of a plate, and the shell body 1 has a first area D1 and a second area D2. The first area D1 is used for setting components, and the first area D1 is provided with two avoidance slots 13, two avoiding The empty slots 13 are respectively configured to provide a first card holder for accommodating the SIM card, a second card holder for accommodating the memory card, and a second area D2 for setting the battery. Specifically, the body 1 has a pair of long sides L disposed opposite to each other, a first face 11 facing the circuit board of the mobile terminal, and a second face 12 facing away from the first face 11, the body 1 along the long side L The first region D1 and the second region D2 are sequentially disposed in the extending direction. The first region D1 of the first surface 11 is mainly used for abutting various components, and the second region D2 of the first surface 11 is used for abutting against the battery. The components of the casing 1 are arranged as described above to further optimize the structure of the casing 1. Wherein, the first area D1 is correspondingly arranged with a hole avoidance according to the relationship between the components to optimize the layout of the components. The shell body 1 of the first area D1 of the shell body 1 on the right side is hollowed out to form two communicating avoidance slots 13 so that the first card seat and the second card seat can be exposed, so that the user can change the capacity. The SIM card or the memory card is placed therein, and the two avoidance slots 13 are connected, so that the arrangement of the first card holder and the second card holder can be concentrated, and the structure of the shell body 1 is further optimized. Of course, in other embodiments, according to the layout requirements of the actual components, the two avoidance slots 13 can also be divided into two sides of the shell body 1, that is, the two avoidance slots 13 are not connected.

It can be understood that, in order to further enhance the heat dissipation performance of the rear case 100, a plurality of heat dissipation holes may be formed in the body 1 to accelerate the heat dissipation on the body 1.

It can be understood that since the second region D2 is abutted on the battery and the heat is relatively large, the heat absorbing heat storage member 2 is disposed in the second region D2 of the second surface 12. Of course, in other embodiments, the heat absorbing heat storage member 2 may be disposed on the outer surface of the entire body 1 or in the first region D1.

It can be understood that a heat insulator (not shown) can be continuously disposed on the shell body 1 to transmit the heat insulation amount to the back cover connected to the rear case 100, thereby lowering the temperature of the back cover. Specifically, the heat insulating member is made of a material having a low thermal conductivity, and the heat insulating member is stacked on the heat absorbing heat storage member 2, and the size of the heat insulating member can match the size of the shell body 1, and can also absorb heat. The size of the heat storage member 2 is matched.

In this embodiment, the endothermic heat storage material may be a phase change material capable of changing physical properties as the temperature changes and capable of absorbing a large amount of heat. As the absorbed heat increases, the endothermic heat storage material is One phase gradually transforms into another phase, and after absorbing enough heat, it will stably maintain another phase. The heat is absorbed again, and when there is no heat source or low heat on the shell body 1, the heat absorbing heat storage material dissipates heat and gradually recovers from the other phase to the original phase as the heat is reduced. Wherein, the endothermic heat storage material can change from a solid phase to a liquid phase or a liquid phase to a solid phase as a function of temperature, or a solid phase transitions to a gas phase or a liquid phase to a solid phase, or a liquid phase to a gas phase or a gas phase to a liquid phase change.

It can be understood that the shape of the heat absorbing heat storage member 2 matches the shape of the second region D2 of the shell body 1. When the heat of the shell body 1 reaches a certain temperature, the heat absorbing heat storage material in the heat absorbing heat storage member 2 The heat of the shell body 1 is absorbed and stored to cool the shell body 1.

The rear case 100 provided by the present invention is provided with a heat absorbing heat storage member 2 on the shell body 1. The heat absorbing heat storage member 2 includes an endothermic heat storage material having heat absorbing and heat storage functions, and can perform heat on the shell body 1. Absorbing, and storing heat in itself, when the temperature of the shell body 1 is lowered, the stored heat is slowly dissipated into the air, thereby reducing the heat of the shell body 1, thereby providing the rear shell 100 with better heat dissipation performance. Improve the reliability of equipment use and reduce the impact of heat on the shell 1.

For further improvement, the endothermic heat storage material preferably comprises silica and polyethylene glycol in a mass ratio of 1:1 to 1:9. The inventors have obtained through a large number of experiments that the organic-composite phase change material which can be obtained by mixing silica and polyethylene glycol in a mass ratio of 1:1 to 1:9 has a suitable phase transition temperature and can be absorbed in time. The heat of the shell body 11 further improves the reliability of the rear case 100. Specifically, the phase change temperature of the heat absorbing heat storage material is 40 degrees, that is, after the heat generated by the shell body 1 reaches 40 degrees, the heat absorbing heat storage material undergoes phase change heat absorption, and the heat of the shell body 1 is Take away to cool the shell 1. Of course, in other embodiments, the endothermic heat storage material may also be an inorganic phase change material, or a composite phase change material or the like.

For further improvement, the endothermic heat storage material is composed of a plurality of microcapsules with silica as the capsule wall and polyethylene glycol as the capsule core. The heat absorbing heat storage material of the microcapsule structure can better absorb heat and heat the shell body 1 to achieve better heat dissipation performance. Specifically, the polyethylene glycol is added to a certain concentration of silica sol. After all the dissolution, the CaCl ₂ coagulant solution is added dropwise, and the polyethylene glycol is sol-gel in the silica sol under strong stirring. After the reaction, the three-dimensional network structure gel is formed after standing; the gel is dried in an oven at 80 ° C for 24 to 48 hours, and cooled to room temperature, thereby obtaining a large amount of dioxide generated by the organosilicon oxide under alkaline conditions. The silicone gel is a microcapsule with a capsule wall and a emulsified polyethylene glycol as a capsule core. That is, in each microcapsule, silica as a capsule wall encloses the polyethylene glycol as the core of the capsule, so that the polyethylene glycol does not leak from the solid phase-liquid phase, and can be well-received. Wrapped in silicon oxide. The heat absorbing heat storage material forming the microcapsule structure starts to absorb the heat on the shell body 1 after the heat of the shell body 1 reaches 40 degrees, and the core itself gradually increases from the solid phase to the liquid phase as the heat gradually increases. After the capsule core is converted into a liquid phase, the heat absorbed by the endothermic heat storage material is saturated, and the absorption of heat is stopped, and after the temperature of the shell body 1 is gradually lowered to a preset temperature, the core is gradually converted from the liquid phase to the solid phase. Phase, at the same time, the heat absorbed by the core (since the heat transfer material in the core transition from solid to liquid phase will take away some of the latent heat, so the heat in the core is already small) gradually emanates In the air, at this moment, the circulation of the solid phase to the liquid phase is performed to cool the shell body 1 to improve the heat dissipation performance and reliability of the back shell 100. Of course, in other embodiments, the endothermic heat storage material may be other structures such that the endothermic heat storage material can cool the shell body 1 by cyclic conversion from a solid phase to a gas phase.

As shown in FIG. 1b, for further improvement, the heat absorbing heat storage member 2 further comprises a titanate coupling agent and a glue layer 22, and the heat absorbing heat storage material and the titanate coupling agent are mixed to form a sheet material 21 The adhesive layer 22 is laminated on the sheet material 21, and the sheet material 21 is adhered to the shell body 1 through the adhesive layer 22.

The heat absorbing heat storage material is formed by mixing the heat absorbing heat storage material with the titanate coupling agent, and then laminating and connecting to the sheet material 21 through the adhesive layer 22 to form the heat absorbing heat storage member 2, which not only makes the heat absorbing heat storage member 2 can be cut according to the shape of the shell body 1, and can be better matched with the shell body 1, and can absorb heat and heat at various positions of the shell body 1, further cool the shell body 1 and raise the shell. The heat dissipation performance and reliability of the body 1 and the sheet-like heat absorbing heat storage member 2 are convenient to apply, and can be directly adhered without waiting for cooling to form a coating.

In the present embodiment, the endothermic heat storage material is chopped and strongly stirred to obtain a powder. Since the diameter of the powder is much larger than the diameter of each microcapsule, the microcapsule structure in the endothermic heat storage material is not destroyed. That is, it does not affect the endothermic heat storage function of the endothermic heat storage material, and the inorganic pseudo-organic composite shaped phase change material is obtained by adding a titanate coupling agent to the powdery endothermic heat storage material to obtain an inorganic pseudo-organic composite shaped phase change material, and then the inorganic The organic composite shaped phase change material is tableted by a tableting machine to obtain a sheet-like material, that is, a sheet-like material 21, and the sheet-like material 21 is further laminated to connect the upper adhesive layer 22 to form an endothermic heat storage member 2. It can be understood that the adhesive layer 22 can be a backing, a double-sided adhesive or a release film. The heat absorbing heat storage member 2 can be cut into a certain shape according to the shape of the shell body 1 and attached to the shell body 1 to realize the function of absorbing heat and storing heat.

For further improvement, the rear case 100 further includes a protective film 3 disposed on the heat absorbing heat storage member 2, and the protective film 3 is located on a side away from the case body 11.

The reliability of the rear case 100 is further improved by providing the protective film 3 on the heat absorbing heat storage member 2 to further protect the heat absorbing heat storage member 2.

In the present embodiment, the protective film 3 is polyethylene terephthalate (PET), which is laminated on the sheet material 21 and opposite to the adhesive layer 22, and the protective film 3 can further be in the form of a sheet. The material 21 is shaped and has a dustproof effect. Of course, in other embodiments, the material of the protective film 3 may also be other, such as silica gel.

In order to further improve, the rear case 100 further includes an adsorbing member 4, and the adsorbing member 4 includes a connecting surface 41 and an adsorption surface 42 disposed oppositely. The heat absorbing heat storage member 2 is disposed on the adsorbing member 4, and the adsorption surface 42 is adsorbed to the shell body. 1 on.

By arranging the adsorbing member 4 on the heat absorbing heat storage member 2, the heat absorbing heat storage member 2 can be directly adsorbed on the shell body 1 to facilitate the disassembly and assembly of the heat absorbing heat storage member 2 and the shell body 1.

In the present embodiment, the adsorption surface 42 defines a plurality of adsorption holes 42a, and the adsorption surface 42 is pressed into the plurality of adsorption holes 42a to adsorb the adsorption member 4 to the casing 1. Specifically, the adsorption member 4 is a cushion, and the adsorption surface 42 is provided with a plurality of semi-circular adsorption holes 42a. The heat absorption and heat storage member 2 is adhered to the connection surface 41 of the adsorption member 4 through its own adhesive layer 22, and then adsorbed. The adsorption surface 42 of the member 4 is press-fitted to the second region D2, and the air in the plurality of adsorption holes 42a is evacuated, so that the adsorbing member 4 can be adsorbed to the second region D2 through the plurality of adsorption holes 42a. When the heat absorbing heat storage member 2 needs to be disassembled, the heat absorbing heat storage member 2 can be removed with a slight force, and the heat absorbing heat storage member 2 is not damaged, so that the heat absorbing heat storage member 2 shell is repeatedly repeated. Use to improve the reliability of the rear case 100. Of course, in other embodiments, the rear shell may also have a plurality of semi-circular adsorption holes arranged in a matrix, and a smooth design is formed on the periphery of the adsorption holes to enhance the adsorption force of the shell body and the adsorption member, and the adsorption surface is pressed. In the plurality of adsorption holes, the adsorption member is vacuum-adsorbed to the shell body. Specifically, the adsorption surface is a plane, and the adsorption surface is pressed against the plurality of adsorption holes of the shell body, and the air of the adsorption hole of the shell body is discharged to realize the adsorption of the heat absorption heat storage member and the shell body.

As shown in FIG. 2, a rear case 200 according to a second embodiment of the present invention is substantially the same as the basic structure of the rear case 100 provided by the first embodiment of the present invention, and is different in this embodiment. The heat absorbing heat storage member 52 includes an endothermic heat storage material, a diluent solvent, and a binding solution, and the heat absorbing heat storage material, the diluent solvent, and the binding solution are mixed and coated on the shell body 51.

The heat absorbing heat storage member 52 is formed by mixing the diluent solvent and the binding solution with the heat absorbing heat storage material, so that the heat absorbing heat storage member 52 directly has the adhesion, and the rubber layer 22 can be applied to the shell body 51 without additionally adding the rubber layer 22. In this way, a more convenient heat absorbing heat storage member 52 is provided.

In this embodiment, referring to FIG. 2a, the endothermic heat storage material is chopped and strongly stirred to obtain a powder. Since the diameter of the powder is much larger than the diameter of each microcapsule, the endothermic heat storage material is not damaged. The microcapsule structure, that is, does not affect the endothermic heat storage function of the endothermic heat storage material, is added to the dilution solvent in the powdery endothermic heat storage material and is mixed with a special bonding solution (for example: methanol xylene, acrylic resin) Therefore, the heat absorbing heat storage member 52 has an adhesive force, and the heat absorbing heat storage member 52 is directly deposited into a certain thickness to be attached to the shell body 51 in a coated manner, thereby realizing the function of absorbing heat storage.

For further improvement, the rear case 500 further includes a protective film 53 disposed on the heat absorbing heat storage member 52, and the protective film 53 is located on a side away from the body 511.

The reliability of the rear case 500 is further improved by providing the protective film 53 on the heat absorbing heat storage member 52 to further protect the heat absorbing heat storage member 52.

In the present embodiment, the protective film 53 is polyethylene terephthalate (PET). Wherein, after the heat absorbing heat storage member 52 is directly applied to the shell body 51, the protective film 53 is disposed on the heat absorbing heat storage member 52. The protective film 53 can further shape and have a dustproof effect on the heat absorbing heat storage member 52. Of course, in other embodiments, the material of the protective film 53 may also be other materials such as silica gel.

For further improvement, the rear case 500 further includes an adsorbing member 54. The adsorbing member 54 includes a connecting surface 541 and an adsorption surface 542 disposed oppositely. The heat absorbing heat storage member 52 is disposed on the adsorbing member 54 and the adsorption surface 542 is adsorbed to the shell body. 51 on.

By arranging the adsorbing member 54 on the heat absorbing heat storage member 52, the heat absorbing heat storage member 52 can be directly adsorbed on the shell body 51, so that the heat absorbing heat storage member 52 and the shell body 51 can be detached.

In the present embodiment, the adsorption surface 542 has a plurality of adsorption holes 542a, and the adsorption surface 542 is pressed into the plurality of adsorption holes 542a so that the adsorption member 54 is adsorbed on the casing 51. Specifically, the adsorption member 54 is a cushion, and the adsorption surface 542 is provided with a plurality of semi-circular adsorption holes 542a. The heat absorption and heat storage member 52 is directly applied to the connection surface 541 of the adsorption member 54 by its own adhesion, and then adsorbed. The adsorption surface 542 of the member 54 is press-fitted to the casing 41, and the air in the plurality of adsorption holes 542a is evacuated, so that the adsorbing member 54 can be adsorbed to the casing 51 through the plurality of adsorption holes 542a. When the heat absorbing heat storage member 52 needs to be disassembled, the heat absorbing heat storage member 52 can be removed with a slight force, and the heat absorbing heat storage member 52 is not damaged, so that the heat absorbing heat storage member 52 is repeatedly repeated. Used to improve the reliability of the rear case 500. Of course, in other embodiments, the rear case may also have a plurality of semi-circular adsorption holes arranged in a matrix, and a smooth design on the periphery of the adsorption holes to enhance the shell. The adsorption force of the body and the adsorbing member presses the adsorption surface into the plurality of adsorption holes, so that the adsorption member is vacuum-adsorbed to the shell body. Specifically, the adsorption surface is a plane, and the adsorption surface is pressed against the plurality of adsorption holes of the shell body, and the air of the adsorption hole of the shell body is discharged to realize the adsorption of the heat absorption heat storage member and the shell body.

As shown in FIG. 3, a third embodiment of the present invention provides a rear case 300 which is substantially the same as the basic structure of the rear case 100 according to the first embodiment of the present invention, and is different in the embodiment. The heat absorbing heat storage member 62 includes a heat absorbing heat storage material 621, a substrate 623 and a glue layer 622. The heat absorbing heat storage material 621 is coated on the substrate 623, and the glue layer 622 is laminated and connected to the heat absorbing heat storage material 621, and the glue Layer 622 is bonded to shell body 61.

The heat absorbing heat storage material 621 is directly coated on the substrate 623, and the adhesive layer 622 is disposed on the heat absorbing heat storage material 621 to be adhered to the shell body 61, which is not required to be tableted by a tableting machine, and is relatively simple to manufacture.

In this embodiment, referring to FIG. 3a, the substrate 623 is polyethylene terephthalate (PET), and the endothermic heat storage material 621 is chopped and stirred vigorously to obtain a powder, since the diameter of the powder is much larger than The diameter of the microcapsules does not damage the microcapsule structure in the endothermic heat storage material 621, that is, does not affect the endothermic heat storage function of the endothermic heat storage material 621, and directly coats the powdery endothermic heat storage material 621. The cloth is formed on the substrate 623, and the substrate 623 having the heat absorbing heat storage material 621 is adhered to the shell body 61 through the adhesive layer 622 to realize the heat absorbing and heat storage function of the heat absorbing heat storage member 62. It can be understood that the adhesive layer 622 can be a backing, double-sided tape or the like.

For further improvement, the rear case 300 further includes a protective film 63 disposed on the heat absorbing heat storage member 62 and away from the case body 61.

The reliability of the rear case 300 is further improved by providing the protective film 63 on the heat absorbing heat storage member 62 to further protect the heat absorbing heat storage member 62.

In the present embodiment, the protective film 63 is polyethylene terephthalate (PET). The protective film 63 is placed on the substrate 623. The protective film 63 can further shape and have a dustproof effect on the heat absorbing heat storage member 62. Of course, in other embodiments, the material of the protective film 63 may also be other, such as silica gel.

For further improvement, the rear case 300 further includes an adsorbing member 64. The adsorbing member 64 includes a connecting surface 641 and an adsorbing surface 642 disposed oppositely. The heat absorbing heat storage member 62 is disposed on the adsorbing member 64, and the adsorption surface 642 is adsorbed to the shell body. 61 on.

By arranging the adsorbing member 64 on the heat absorbing heat storage member 62, the adsorbing member 64 can be directly adsorbed to The shell body 61 facilitates the disassembly and assembly of the heat absorbing heat storage member 62 and the shell body 61.

In the present embodiment, the adsorption surface 642 defines a plurality of adsorption holes 642a, and the adsorption surface 642 is pressed into the plurality of adsorption holes 642a to adsorb the adsorption member 64 to the shell body 61. Specifically, the absorbing member 64 is a soft pad, and the plurality of absorbing holes 642a are formed in the array of the absorbing surface 642. The heat absorbing heat storage member 62 is adhered to the connecting surface 641 of the absorbing member 64 through the adhesive layer 622, and the absorbing member 64 is further disposed. The adsorption surface 642 is press-fitted to the casing 61 to evacuate the air in the plurality of adsorption holes 642a, so that the adsorption member 64 can be adsorbed to the casing 61 through the plurality of semicircular adsorption holes 642a. When the heat absorbing heat storage member 62 needs to be disassembled, the heat absorbing heat storage member 62 can be removed with a slight force, and the heat absorbing heat storage member 62 is not damaged, so that the heat absorbing heat storage member 62 is repeatedly used. Improve the reliability of the rear case 300. Of course, in other embodiments, the rear shell may also have a plurality of semi-circular adsorption holes arranged in a matrix, and a smooth design is formed on the periphery of the adsorption holes to enhance the adsorption force of the shell body and the adsorption member, and the adsorption surface is pressed. In the plurality of adsorption holes, the adsorption member is vacuum-adsorbed to the shell body. Specifically, the adsorption surface is a plane, and the adsorption surface is pressed against the plurality of adsorption holes of the shell body, and the air of the adsorption hole of the shell body is discharged to realize the adsorption of the heat absorption heat storage member and the shell body.

FIG. 4 is a schematic diagram of a mobile terminal 400 according to a fifth embodiment of the present invention. The mobile terminal 400 includes any one of the rear cases 100, 200, and 300 in the above three embodiments, and the rear case 100. 200, 300 are disposed between the front case assembly and the rear cover of the mobile terminal 400, and an accommodation space for accommodating components and a battery is formed between the rear case 100, 200, 300 and the front case assembly.

When the mobile terminal is manufactured, first, a heat absorbing heat storage member is disposed on the shell body, then the heat insulating member is laminated and connected to the heat absorbing heat storage member, and finally the rear shell is assembled with other components of the mobile terminal. Wherein, the heat absorbing heat storage material forming the microcapsule structure starts to absorb the heat of the shell body after the heat of the shell body reaches 40 degrees, and the capsule core itself gradually changes from the solid phase to the liquid phase, and after the capsule core is converted into the liquid phase. The heat absorbed by the heat absorbing heat storage material is saturated, and the heat absorption is stopped, and after the temperature outside the shell body is gradually lowered to a preset temperature, the core absorbs the heat absorbed, is transmitted to the air, and the core is As the body heat gradually decreases, the liquid phase-solid phase gradually passes through the cyclic phase transition of the heat absorbing heat storage material, thereby lowering the shell body and improving the heat dissipation performance and reliability of the mobile terminal.

The rear case provided by the invention provides an endothermic heat storage member on the shell body, and the heat absorbing heat storage member comprises an endothermic heat storage material having heat absorbing and heat storage functions, capable of absorbing heat of the shell body and storing the heat in the heat absorbing body. When the temperature of the shell body is lowered, the stored heat is dissipated into the air, thereby reducing the heat of the shell body, so that the mobile terminal having the back shell 100 has better heat dissipation performance and improving the device. The reliability of use reduces the impact of heat on the body and the mobile terminal.

The above is a preferred embodiment of the present invention, and it should be noted that those skilled in the art can also make several improvements and retouchings without departing from the principles of the present invention. These improvements and retouchings are also considered as The scope of protection of the invention.

Claims (20)

a rear case, wherein the rear case is disposed between a front case assembly and a rear cover of the mobile terminal, and the rear case and the front case assembly are formed to receive components and The accommodating space of the battery, the rear case includes a shell body and a heat absorbing heat storage member, the heat absorbing heat storage member is disposed on the shell body, and the heat absorbing heat storage member comprises an endothermic and heat storage function. An endothermic heat storage material of material nature, the endothermic heat storage material is for absorbing heat from the shell, and the endothermic heat storage material stores the absorbed heat. The rear case according to claim 1, wherein the case body is in a plate shape, the case body has a first area and a second area, and the first area is for setting a component, the first Two escaping slots are respectively disposed in the area, the two escaping slots are respectively configured to set a first card holder for accommodating a SIM card, and a second card holder for A memory card is housed, and the second area is used to set a battery. The rear case according to claim 2, wherein the two cutouts are in communication. The back shell according to any one of claims 1 to 3, wherein the endothermic heat storage material comprises silica and polyethylene glycol, and the mass ratio of the silica to the polyethylene glycol is 1:1 to 1:9. The back shell according to claim 4, wherein the endothermic heat storage material is composed of a plurality of microcapsules having the silica as a capsule wall and the polyethylene glycol as a capsule core. The back shell according to claim 5, wherein the heat absorbing heat storage member further comprises a titanate coupling agent and a glue layer, and the heat absorbing heat storage material and the titanate coupling agent are mixed. A sheet-like material is formed, and the adhesive layer is laminated on the sheet material, and the sheet material is adhered to the shell body through the adhesive layer. The back shell according to claim 5, wherein the heat absorbing heat storage member further comprises a diluent solvent and a binding solution, and the heat absorbing heat storage material, the diluent solvent and the binding solution are mixed and Coated on the shell. The back cover according to claim 5, wherein the heat absorbing heat storage member further comprises a substrate and a glue layer, the heat absorbing heat storage material is coated on the substrate, and the glue layer is laminated and pasted. The substrate coated with the endothermic heat storage material is adhered to the shell through the adhesive layer. The rear case according to claim 6, wherein the rear case further comprises a protective film, the protective film is disposed on the heat absorbing heat storage member, and the protective film is located away from the shell body One side. The rear case according to claim 9, wherein the protective film is polyethylene terephthalate, and the protective film is laminated on the sheet material and opposite to the rubber layer. . The rear case according to claim 1, wherein the rear case further comprises an adsorption member, the adsorption member comprises a connecting surface and an adsorption surface disposed opposite to each other, and the heat absorbing heat storage member is disposed on the adsorption member The adsorption surface is adsorbed on the shell. The rear case according to claim 11, wherein the adsorption surface defines a plurality of adsorption holes, and the adsorption member is adsorbed to the shell body through the plurality of adsorption holes. The rear case according to claim 11, wherein the adsorbing member is a cushion, and the array of adsorption surfaces is provided with a plurality of semicircular adsorption holes. The rear case according to claim 11, wherein the rear case defines a plurality of adsorption holes, and the adsorption surface is pressed into the plurality of adsorption holes to adsorb the adsorption member to the shell Body. The rear case according to claim 11, wherein a plurality of heat dissipation holes are formed in the body. The rear case according to claim 11, wherein a heat insulating member is disposed on the body, and the heat insulating member is laminated on the heat absorbing heat storage member. A mobile terminal characterized by comprising the rear case according to any one of claims 1 to 12. The mobile terminal of claim 17, wherein the mobile terminal further comprises a front case assembly and a rear cover, the rear case being fixed between the front case assembly and the rear cover. The mobile terminal according to claim 18, wherein an accommodation space is formed between the rear case and the front case assembly. The mobile terminal according to claim 19, wherein the mobile terminal further comprises a component and a battery, and the component and the battery are fixed in the accommodating space.

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