CN109688775B

CN109688775B - Heat dissipation device and terminal

Info

Publication number: CN109688775B
Application number: CN201910116560.6A
Authority: CN
Inventors: 陈远召; 郭阳
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2019-02-13
Filing date: 2019-02-13
Publication date: 2020-05-29
Anticipated expiration: 2039-02-13
Also published as: CN109688775A

Abstract

A heat dissipation device applied to a terminal comprises: the heat dissipation assembly comprises a heat dissipation assembly, a fixing assembly, a first connecting piece, a second connecting piece and a driving part; the fixed assembly is connected with a first structural member of a terminal, the first connecting piece is sleeved with the fixed assembly, the first connecting piece is fixedly connected with the heat dissipation assembly, and the second connecting piece is sleeved with the fixed assembly; one end of the driving part is connected with the second connecting part, the other end of the driving part is connected with the heat dissipation assembly at a fixed point, and the fixed point is not collinear with the center of the first connecting part and the center of the second connecting part; when the driving belt changes from the first shape to the second shape, the driving belt pulls the heat dissipation assembly to rotate. The invention provides power for the heat dissipation device by utilizing the driving part with the first shape and the second shape, promotes the air flow in the terminal and is beneficial to better heat dissipation of the terminal.

Description

Heat dissipation device and terminal

Technical Field

The embodiment of the invention relates to the field of mechanical structures, in particular to a heat dissipation device and a terminal.

Background

Along with the rapid development of the intelligent terminal, the performance of the intelligent terminal is continuously improved, the power consumption of the intelligent terminal is larger and larger, and the heating value is higher and higher. The problem of heating has become one of the several most serious problems affecting the user experience of the intelligent terminal at present. In addition, the hardware temperature of the intelligent terminal is easily overhigh due to overhigh heat productivity, so that the service life of electronic components is influenced.

At present, a main heat dissipation method of an intelligent terminal is to contact a main board through a heat dissipation material inside the intelligent terminal, scatter local hot spots through heat conduction, and then transmit the scattered hot spots to an intelligent terminal shell to realize heat dissipation. However, because the inside of the intelligent terminal is a closed space, air convection cannot be formed, so that the local temperature is still high, and particularly when a large program or application is operated, hardware is easily burned due to excessive heat. In addition, through this kind of radiating mode with heat transfer to intelligent terminal shell, cause the overheated phenomenon that leads to scalding one's hand of intelligent terminal easily to influence user experience.

Disclosure of Invention

The invention provides a heat dissipation device and a terminal, and aims to solve the problems that air convection cannot be formed inside an intelligent terminal, the heat dissipation capability is poor, and user experience is affected.

In order to solve the above technical problem, the embodiment of the present invention is implemented as follows:

in a first aspect, an embodiment of the present invention provides a heat dissipation apparatus, where the heat dissipation apparatus is applied to a terminal, and the heat dissipation apparatus includes: the heat dissipation assembly comprises a heat dissipation assembly, a fixing assembly, a first connecting piece, a second connecting piece and a driving part; the fixed assembly is connected with a first structural member of a terminal, the first connecting piece is sleeved with the fixed assembly, the first connecting piece is fixedly connected with the heat dissipation assembly, and the second connecting piece is sleeved with the fixed assembly; one end of the driving part is connected with the second connecting part, the other end of the driving part is connected with the heat dissipation assembly at a fixed point, and the fixed point is not collinear with the center of the first connecting part and the center of the second connecting part; when the driving part changes from the first shape to the second shape, the driving part pulls the heat dissipation assembly to rotate.

Preferably, the fixing assembly comprises: the terminal comprises a first fixing piece and a second fixing piece, wherein one end of the first fixing piece is connected with a first structural component at a terminal, the other end of the first fixing piece is fixedly connected with the second fixing piece, the first connecting piece is sleeved with the first fixing piece, and the second connecting piece is sleeved with the second fixing piece.

Preferably, the first fixing member is a first fixing shaft, the second fixing member is a second fixing shaft, the first connecting member is a first bearing, the second connecting member is a second bearing, and the driving member is a spring.

Preferably, the fixing point is located at an outer edge of the heat dissipating assembly.

Preferably, the spring comprises a first spring, a second spring, a third spring and a fourth spring, the first spring, the second spring, the third spring and the fourth spring are respectively connected with the heat dissipation assembly at a first fixed point, a second fixed point, a third fixed point and a fourth fixed point, the first fixed point, the second fixed point, the third fixed point and the fourth fixed point are respectively located at different positions on the outer side edge of the heat dissipation assembly, and included angles are respectively formed among the first spring, the second spring, the third spring and the fourth spring.

Preferably, the drive member is comprised of a memory material having shape memory properties.

Preferably, the heat dissipation assembly is a plurality of fan blades, the fan blades are made of memory materials, and the fan blades are expanded at high temperature and contracted at low temperature.

Preferably, the fan blade is made of a memory material with a two-way memory characteristic, the memory material has a first memory temperature and a second memory temperature, and the first memory temperature is greater than the second memory temperature;

when the temperature of the fan blade is higher than the first memory temperature, the fan blade is in a first stretching state;

when the temperature of the fan blade is lower than the second memory temperature, the fan blade is in a second stretching state;

when the temperature of the fan blade is between the first memory temperature and the second memory temperature, the fan blade is in a third extension state.

In a second aspect, an embodiment of the present invention further provides a terminal, where the terminal has the heat dissipation device in the first aspect.

Preferably, the terminal further comprises a first component, and the heat dissipation assembly in the heat dissipation device is eccentrically positioned relative to the first component.

Preferably, the terminal further includes a heat dissipation channel and a heat dissipation port, the heat dissipation device and the heat dissipation port are respectively located at two sides of the heat dissipation channel, and the air flow generated by the heat dissipation device is exhausted from the heat dissipation port through the heat dissipation channel.

In the embodiment of the invention, the driving part with the first shape and the second shape is used for providing power for the heat dissipation device, so that the air flow in the terminal is increased, and the terminal can dissipate heat better. In addition, the heat dissipation device provided by the embodiment of the invention is directly powered by the driving part without additional parts such as a motor and the like, so that the occupied space is smaller, the terminal volume is favorably reduced, and the heat dissipation device is more energy-saving and environment-friendly.

Drawings

Fig. 1 is a side view of a structure of a terminal according to an embodiment of the present invention;

fig. 2 is a top view of a structure of a terminal according to an embodiment of the present invention;

fig. 3 is a schematic diagram illustrating an operation of a heat dissipation device according to an embodiment of the present invention;

fig. 4 is another schematic operation diagram of a heat dissipation device according to an embodiment of the present invention.

Fig. 5 is a schematic view illustrating still another operation of a heat dissipation device according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that "/" in this context means "or", for example, A/B may mean A or B; "and/or" herein is merely an association describing an associated object, and means that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. "plurality" means two or more than two.

The terms "first," "second," "third," and "fourth," etc. in the description and in the claims of the present invention are used for distinguishing between different objects and not for describing a particular order of the objects.

In the embodiments of the present invention, words such as "exemplary" or "for example" are used to mean serving as examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "e.g.," an embodiment of the present invention is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.

The heat dissipation device provided by embodiment 1 of the present invention is applied to a terminal, and includes: the heat dissipation assembly comprises a heat dissipation assembly, a fixing assembly, a first connecting piece, a second connecting piece and a driving part.

The fixed assembly is connected with a first structural member of the terminal, the first connecting piece is sleeved with the fixed assembly, the first connecting piece is fixedly connected with the heat dissipation assembly, and the second connecting piece is sleeved with the fixed assembly;

one end of the driving part is connected with the second connecting piece, the other end of the driving part is connected with the heat dissipation assembly at a fixed point, and the fixed point is not collinear with the center of the first connecting piece and the center of the second connecting piece;

in the present embodiment, the driving belt has a first shape and a second shape, and when the driving belt is changed from the first shape to the second shape, the driving part pulls the heat dissipation assembly to rotate, so as to achieve the heat dissipation function.

The present embodiment facilitates air flow inside the terminal by powering the heat sink using the driving member having the first shape and the second shape, which facilitates better heat dissipation of the terminal. In addition, the heat dissipation device provided by the invention is directly powered by the driving part, and additional parts such as a motor and the like are not needed, so that the occupied space is small, the terminal volume is favorably reduced, and the heat dissipation device is more energy-saving and environment-friendly.

Specifically, in this embodiment, the fixing assembly includes a first fixing element and a second fixing element, one end of the first fixing element is connected to the first structural component of the terminal, the other end of the first fixing element is fixedly connected to the second fixing element, the first connecting element is sleeved with the first fixing element, and the second connecting element is sleeved with the second fixing element.

It should be noted that, in the present embodiment, the driving member may be made of a memory material having a shape memory property. The memory material is preferably a memory metal or a memory alloy, has the characteristics of large bending amount and high plasticity, and has a specific memory temperature. When the temperature is increased from below the memory temperature to above the memory temperature, the crystal structure inside the memory material is changed from a first crystal structure to a second crystal structure, so that the shape of the memory material is changed, namely the memory material is changed from a first shape to a second shape, and the length of the driving part is changed; when the temperature is decreased from above the memory temperature to below the memory temperature, the crystal structure inside the memory material is transformed from the second crystal structure to the first crystal structure, i.e., from the second shape to the first shape, so that the memory material is restored in shape and the driving member is restored to the original length.

In this embodiment, the fixing point is preferably located at the outer edge of the heat sink assembly, so that the driving member has sufficient space to deform, thereby generating a large moment.

It should be noted that, in this embodiment, the number of the driving components may be one, or may be multiple, and this embodiment is not particularly limited to this.

It should be noted that, in this embodiment, the driving component may be a fan blade, a fan wheel, or another heat dissipation structure, which is not specifically limited in this embodiment.

In this embodiment, the first fixing element may be a first fixing shaft, the first connecting element may be a first bearing, the second fixing element may be a second fixing shaft, the second connecting element may be a second bearing, and the driving member may be a spring, which is not specifically limited in this embodiment.

Specifically, an embodiment 1 of the present invention provides a heat dissipation apparatus, including: the heat dissipation assembly comprises a heat dissipation assembly, a first fixing shaft, a second fixing shaft, a first bearing, a second bearing and a spring.

The first fixing shaft is connected with the first structural member of the terminal, so that the heat dissipation device is fixed on the first structural member of the terminal, the other end of the first fixing shaft is fixedly connected with the second fixing shaft, the first bearing is sleeved with the first fixing shaft, the second bearing is sleeved with the second fixing shaft, and the heat dissipation assembly is fixedly connected with the first bearing, so that when the first bearing rotates relative to the first fixing shaft, the heat dissipation assembly can rotate along with the first bearing. One end of the spring is connected with the second bearing, and the other end of the spring is connected with the heat dissipation assembly at the fixed point.

It should be noted that, in this embodiment, the fixed point is not collinear with the center of the first bearing and the center of the second bearing, so that when the spring deforms, the moment of the spring on the second bearing is not zero, and the heat dissipation assembly rotates under the pulling force of the spring, thereby achieving the heat dissipation function.

Further, the position of the fixing point is preferably a position located at an outer side edge of the heat dissipating assembly.

In the embodiment, the spring is made of a memory material, and the memory material is preferably a memory metal or a memory alloy, has the characteristics of large bending amount and high plasticity, and has a specific memory temperature. When the temperature is increased from below the memory temperature to above the memory temperature, the crystal structure in the memory material is changed from a first crystal structure to a second crystal structure, so that the shape of the memory material is changed, namely the spring is changed from a first shape to a second shape, and the length of the spring is changed; when the temperature is decreased from above the memory temperature to below the memory temperature, the crystal structure inside the memory material is transformed from the second crystal structure to the first crystal structure, i.e. the spring is transformed from the second shape to the first shape, so that the spring shape is restored and the original length is restored.

It should be noted that, in this embodiment, the number of the springs may be one, or may be multiple, and this embodiment is not particularly limited to this.

In this embodiment, when there is only one spring in the heat dissipation device, if the temperature of the spring is higher than the memory temperature of the memory material, the spring provides a pulling force to the heat dissipation assembly, the heat dissipation assembly rotates to work, and the heat dissipation device dissipates heat.

In this embodiment, when the number of the springs of the heat dissipation device is two or more, if the temperature of a part of the springs is higher than the memory temperature of the memory material, the length of the part of the springs with the temperature higher than the memory temperature is changed; the temperature of part of the spring is lower than the memory temperature of the memory material, and the length of the spring is kept unchanged. At this time, since the total torque of the heat dissipation assembly is not zero, that is, the resultant external force applied to the heat dissipation assembly is not zero, the heat dissipation assembly rotates to work, and the heat dissipation device achieves a heat dissipation function.

In this embodiment, the heat dissipation assembly may be a separate component, or may be integrally formed with the first bearing, which is not specifically limited in this embodiment.

It should be noted that, in this embodiment, the heat dissipation assembly may be a fan blade, a fan wheel, or another heat dissipation structure, which is not specifically limited in this embodiment.

This embodiment utilizes the shape memory characteristic of memory material through the spring that uses to constitute by memory material as heat abstractor's power source, and the length of spring is different under the different temperatures, for heat abstractor provides power, makes radiator unit rotate the heat dissipation to realize promoting the inside air flow's of terminal technical effect, be favorable to the terminal better heat dissipation sooner. In addition, the heat dissipation device provided by the embodiment of the invention belongs to a self-driving device, and no additional part is needed to provide power for the device, so that the occupied space is smaller, the terminal volume is favorably reduced, and the heat dissipation device is more energy-saving and environment-friendly.

A specific implementation manner of embodiment 1 of the present invention is that the heat dissipation device includes: the heat dissipation assembly comprises a heat dissipation assembly, a first fixing shaft, a second fixing shaft, a first bearing, a second bearing and a spring.

The number of the springs is one, one end of each spring is connected with the second bearing, the other end of each spring is connected with the heat dissipation assembly at the fixing point, and the fixing point, the center of the first bearing and the center of the second bearing are not collinear, so that when the springs deform and are changed from the first shape to the second shape, the moment of the springs on the fan body is not zero, and the heat dissipation assembly can rotate to dissipate heat.

In addition, the first fixed shaft is connected with the first structural member of the terminal, so that the heat dissipation device is fixed on the first structural member of the terminal, the other end of the first fixed shaft is fixedly connected with the second fixed shaft, the first bearing is sleeved with the first fixed shaft, the second bearing is sleeved with the second fixed shaft, and the heat dissipation assembly is fixedly connected with the first bearing, so that when the first bearing rotates relative to the first fixed shaft, the heat dissipation assembly can rotate along with the first bearing. One end of the spring is connected with the second bearing, and the other end of the spring is connected with the heat dissipation assembly at the fixed point.

In this embodiment, the spring is made of a memory material, which is a memory metal or a memory alloy, and has a memory temperature.

In addition, the memory material has shape memory characteristics, namely, when the temperature of the memory material is increased from below the memory temperature to above the memory temperature, the memory material contracts or expands, so that the shape is changed, namely, the memory material is changed from the first shape to the second shape; when the temperature of the memory material drops from above the memory temperature to below the memory temperature, the memory material will return to the initial state, i.e. transition from the second shape to the first shape.

In the embodiment, when the temperature of the spring is lower than the memory temperature, the length of the spring is the initial length, the spring does not provide force for the heat dissipation assembly, and the heat dissipation assembly does not rotate; when the temperature of spring is higher than memory temperature, the spring takes place to stretch or contract because memory material's memory characteristic, changes from first shape into the second shape promptly, and consequently the length of spring changes to the effect is provided the power to radiator unit, makes radiator unit rotate, thereby realizes the heat dissipation function.

This embodiment utilizes the shape memory characteristic of memory material through the spring that the memory material constitutes as heat abstractor's power source, and the length of spring is different under the different temperatures, for heat abstractor provides power, makes radiator unit rotate the heat dissipation to realize promoting the inside air flow's of terminal technical effect, be favorable to the terminal better heat dissipation sooner. In addition, the number of the springs is only one, so that the heat dissipation device provided by the embodiment is simple in structure and convenient to assemble. In addition, the heat dissipation device provided by the embodiment belongs to a self-driving device, and no additional part is needed to provide power for the device, so that the occupied space is small, the terminal volume is favorably reduced, and the energy-saving and environment-friendly effects are achieved.

Illustratively, the heat dissipating device includes: the heat dissipation assembly comprises a heat dissipation assembly, a first fixing shaft, a second fixing shaft, a first bearing, a second bearing and a spring.

The spring comprises a first spring, a second spring, a third spring and a fourth spring, wherein the first spring, the second spring, the third spring and the fourth spring are respectively connected with the heat dissipation assembly at a first fixed point, a second fixed point, a third fixed point and a fourth fixed point, the first fixed point, the second fixed point, the third fixed point and the fourth fixed point are respectively located at different positions of the outer edge of the heat dissipation assembly, and included angles are respectively formed among the first spring, the second spring, the third spring and the fourth spring, so that when the spring deforms, namely, when the spring is converted from a first shape to a second shape, the resultant external force applied to the heat dissipation assembly is not zero, and the heat dissipation assembly rotates.

Furthermore, the first fixing shaft is connected with the first structural member of the terminal, so that the heat dissipation device is fixed on the first structural member of the terminal, the other end of the first fixing shaft is fixedly connected with the second fixing shaft, the first bearing is sleeved with the first fixing shaft, the second bearing is sleeved with the second fixing shaft, and the heat dissipation assembly is fixedly connected with the first bearing, so that when the first bearing rotates relative to the first fixing shaft, the heat dissipation assembly can rotate along with the first bearing.

In this embodiment, the spring is composed of a memory material, preferably a memory metal or a memory alloy, and the memory material has a memory temperature.

The shape memory property of the memory material is that when the temperature of the memory material is increased from below the memory temperature to above the memory temperature, the memory material contracts or expands, i.e. the shape of the memory material changes; when the temperature of the memory material is reduced from above the memory temperature to below the memory temperature, the memory material will return to the initial state.

In the embodiment, when the temperature of the spring is lower than the memory temperature, the spring keeps the first shape, namely the length of the spring is the initial length, the stress borne by the heat dissipation assembly is balanced, and the spring does not provide force for the heat dissipation assembly; when the temperature of the part of the spring is higher than the memory temperature, the part of the spring is stretched or contracted due to the memory property of the memory material, namely, the part of the spring is subjected to memory deformation and is changed from a first shape to a second shape, so that the length of the part of the spring with the temperature higher than the memory temperature is changed; at this time, the temperature of the other part of the springs is still lower than the memory temperature, so that the part of the springs does not have memory deformation, namely, the part of the springs still keep the first shape, the length of the springs keeps unchanged, the stress balance of the heat dissipation assembly is broken, namely, the springs with the changed lengths provide force for the heat dissipation assembly, the heat dissipation assembly rotates to work, and the heat dissipation device dissipates heat.

Exemplarily, the present embodiment provides a heat dissipation apparatus as shown in fig. 1, the heat dissipation apparatus including: the fan wheel 1, the first fixed shaft 2, the second fixed shaft 4, the first bearing 3, the second bearing 5 and the spring 6;

wherein, as shown in fig. 2 in combination with fig. 1, the spring 6 comprises a first spring 6.1, a second spring 6.2, a third spring 6.3 and a fourth spring 6.4, one end of each of the first spring 6.1, the second spring 6.2, the third spring 6.3 and the fourth spring 6.4 is connected with the second bearing 5, the other ends of the first spring 6.1, the second spring 6.2, the third spring 6.3 and the fourth spring 6.4 are connected to the fan wheel 1 at a first fixing point, a second fixing point, a third fixing point and a fourth fixing point, respectively, and, the first fixing point, the second fixing point, the third fixing point and the fourth fixing point are respectively positioned at different positions of the outer edge of the fan wheel 1, included angles are respectively formed among the first spring 6.1, the second spring 6.2, the third spring 6.3 and the fourth spring 6.4, when the spring is deformed, the moment of the spring to the second bearing 5 is not zero, namely the spring provides pulling force to the impeller 1, so that the rotation heat dissipation of the impeller 1 is realized.

In addition, the first fixing shaft 2 is connected with the first structural member 8 of the terminal, so that the heat sink is fixed on the first structural member 8 of the terminal, the other end of the first fixing shaft 2 is fixedly connected with the second fixing shaft 4, the first bearing 3 is sleeved with the first fixing shaft 2, the second bearing 5 is sleeved with the second fixing shaft 4, and the fan wheel 1 is fixedly connected with the first bearing 3, so that when the first bearing 3 rotates relative to the first fixing shaft 2, the fan wheel 1 can rotate along with the first bearing 3.

In the present embodiment, the first spring 6.1, the second spring 6.2, the third spring 6.3 and the fourth spring 6.4 are all made of memory material, which is memory metal or memory alloy, and the memory material has a memory temperature.

Furthermore, the memory material has a shape memory property, i.e. when the temperature increases from below the memory temperature to above the memory temperature, the crystal structure inside the memory material changes from a first crystal structure to a second crystal structure, resulting in a transition of the spring 6 from the first shape to the second shape, whereby the length of the spring 6 changes; when the temperature decreases from above the memory temperature to below the memory temperature, the crystal structure inside the memory material changes from the second crystal structure to the first crystal structure, the spring 6 changes from the second shape to the first shape, i.e. the spring 6 returns to its original shape, and the spring 6 returns to its original length.

In the present embodiment, when the temperature of the spring 6 is lower than the memory temperature, the length of the spring 6 is the initial length, and at this time, the spring 6 does not provide a force to the fan wheel 1, so the fan wheel 1 does not rotate; when the temperature of the spring 6 is higher than the memory temperature, the spring 6 is changed from the first shape to the second shape due to the memory property of the memory material, namely, the spring is stretched or contracted, the length of the spring is changed, so that force is provided for the fan wheel 1, the fan wheel 1 rotates, and the heat dissipation function is realized by the heat dissipation device.

The working flow of the heat sink in this embodiment is as shown in fig. 3, the first device 7 is placed opposite to the heat sink, and the center of the first device 7 is located at one side of the heat sink. With the continuous heat release of first device 7 in the course of working, when the temperature of third spring 6.3 and fourth spring 6.4 is higher than the memory temperature of memory material, and the temperature of first spring 6.1 and second spring 6.2 is less than this memory temperature, third spring 6.3 and fourth spring 6.4 stretch and become long, change from first shape to second shape promptly to provide the effect to fan wheel 1, make fan wheel 1 anticlockwise rotation, heat abstractor realizes the heat dissipation function.

As shown in fig. 4, after the fan wheel 1 rotates counterclockwise for a while, as the fan wheel 1 rotates, the third spring 6.3 gradually leaves the area where the first device 7 is located, and the first spring 6.1 gradually approaches the area where the first device 7 is located, so that the temperature of the third spring 6.3 gradually decreases as the third spring 6.3 moves away from the first device 7, and the temperature of the first spring 6.1 gradually increases as the first spring 6.1 approaches the first device.

As shown in fig. 5, after the impeller 1 continues to rotate counterclockwise for a while, the fourth spring 6.4 is still in the area of the first device 7, while the third spring 6.3 leaves the area of the first device 7, and the temperature of the third spring 6.3 gradually drops below the memory temperature, so that the third spring 6.3 is transformed from the second shape to the first shape, and the length of the third spring 6.3 returns to the original length, thus no longer providing a force to the impeller 1; the first spring 6.1 enters the area where the first device 7 is located, the temperature of the first spring 6.1 gradually exceeds the memory temperature, the first spring is changed from the first shape to the second shape, at the moment, the first spring 6.1 and the fourth spring 6.4 are stretched to be lengthened, so that force is provided for the fan wheel 1, the fan wheel 1 rotates anticlockwise, and the heat dissipation device continues to work.

As the impeller 1 continues to rotate anticlockwise for a while, the fourth spring 6.4 leaves the zone where the first device 7 is located, and the temperature of the fourth spring 6.4 gradually drops below the memory temperature, the fourth spring 6.4 transforms from the second shape to the first shape, so that the length of the fourth spring 6.4 returns to the original length, thus no longer providing a force on the impeller 1; the second spring 6.2 enters the area where the first device 7 is located and the temperature of the second spring 6.2 gradually exceeds the memory temperature, at this time, the second spring 6.2 and the first spring 6.1 are stretched to be lengthened, so that the force is provided for the fan wheel 1, the fan wheel 1 rotates anticlockwise, and the heat dissipation device continues to work.

As the impeller 1 continues to rotate anticlockwise for a while, the second spring 6.2 is still in the region of the first element 7, while the first spring 6.1 leaves the region of the first element 7, and the temperature of the first spring 6.1 gradually drops below the memory temperature, the first spring 6.1 transforms from the second shape to the first shape, so that the length of the first spring 6.1 returns to the original length, thus no longer providing a force on the impeller 1; the third spring 6.3 enters the area where the first device 7 is located, and the temperature of the third spring 6.3 gradually exceeds the memory temperature, the third spring 6.3 is transformed from the first shape to the second shape, at this time, the third spring 6.3 and the second spring 6.2 are stretched and lengthened, so that the force is provided for the fan wheel 1, the fan wheel 1 rotates anticlockwise, and the heat dissipation device continues to work.

As the sector 1 continues to rotate anticlockwise for a while, as shown in fig. 3, the third spring 6.3 is still in the region of the first element 7, while the second spring 6.2 leaves the region of the first element 7, and the temperature of the second spring 6.2 gradually drops below the memory temperature, the second spring 6.2 transforms from the second shape to the first shape, so that the length of the second spring 6.2 returns to the original length, thus no longer providing a force on the impeller 1; the fourth spring 6.4 enters the area where the first device 7 is located and the temperature of the fourth spring 6.4 gradually exceeds the memory temperature, the fourth spring 6.4 changes from the first shape to the second shape, at which point the fourth spring 6.4 and the third spring 6.3 stretch and lengthen, thereby providing a force to the impeller 1, causing the impeller 1 to rotate counterclockwise, and thereby continuing to maintain the operation of the heat sink.

What has been shown above is a complete working cycle of the heat dissipation device during operation, and if the first device 7 continuously releases heat, the heat dissipation device continuously repeats the working cycle to continuously dissipate heat for the first device 7, so as to cool the first device 7. When the temperatures of the first spring 6.1, the second spring 6.2, the third spring 6.3 and the fourth spring 6.4 in the heat dissipation device are all lower than the memory temperature, the fan wheel 1 stops rotating, and the heat dissipation device stops dissipating heat.

According to the embodiment, the spring formed by the memory material is used as a power source of the heat dissipation device, the shape memory characteristic of the memory material is utilized, and the length of the spring is different at different temperatures, so that power is provided for the heat dissipation device, the fan wheel rotates to dissipate heat, the technical effect of promoting air flow inside the terminal is achieved, and the terminal can dissipate heat more quickly and better. In addition, since the number of the springs is four, the driving force generated by the springs of the heat dissipation device provided by the embodiment is stronger. In addition, compared with the first embodiment, when the heat dissipation device is operated, the rotation speed of the fan wheel is higher, and the heat dissipation effect is better. In addition, the heat dissipation device provided by the embodiment belongs to a self-driving device, and no additional part is needed to provide power for the device, so that the occupied space is small, the terminal volume is favorably reduced, and the energy-saving and environment-friendly effects are achieved.

In other embodiments of the present invention, the fan body 1 may be a fan blade, the spring is fixed on the outer edge of the fan blade, and the fan blade may be made of memory material, and the fan blade expands when the temperature is higher than the memory temperature of the memory material and contracts when the temperature is lower than the memory temperature of the memory material.

The memory material constituting the fan blade may be the same as or different from the memory material constituting the spring, and this embodiment is not particularly limited, but is preferably a memory material different from the memory material constituting the spring.

Furthermore, the memory material of the fan blade can adopt a memory material with a two-way memory characteristic, wherein the two-way memory characteristic means that the memory material has a first memory temperature and a second memory temperature, the first memory temperature is higher than the second memory temperature, and when the temperature of the fan blade is higher than the first memory temperature, the fan blade is in a first stretching state; when the temperature of the fan blade is lower than the second memory temperature, the fan blade is in a second stretching state; when the temperature of the fan blade is between the first memory temperature and the second memory temperature, the fan blade is in a third stretching state.

In this embodiment, when the rotation speed of the fan blade is the same, the fan blade in different stretching states has different cooling effects, and it is preferable that: the fan blade in the first stretching state has the best blast cooling effect, and the fan blade in the second stretching state has the worst blast cooling effect.

According to the embodiment of the invention, the fan sheet made of the memory material is used, so that the fan sheet has different extension states at different temperatures, and the blast heat dissipation effect of the heat dissipation device is different at different temperatures, namely the heat dissipation device has a plurality of heat dissipation gears, and the heat dissipation device can realize automatic switching of the heat dissipation gears according to the temperature, so that the technical effect of promoting air flow inside the terminal at higher temperature is realized, and the terminal can dissipate heat more quickly and better.

Based on the heat dissipation device, the embodiment of the invention also provides a terminal with the heat dissipation device.

It should be noted that the heat dissipation device may be placed inside the terminal in an internal manner, or may be placed outside the terminal in an external manner, which is not limited in this embodiment.

It should be noted that, in this embodiment, the terminal may be a mobile phone, a notebook, a tablet computer, or another terminal, which is not specifically limited in this embodiment.

Specifically, the terminal includes: a heat sink and a first structural member, wherein the heat sink comprises: the heat dissipation assembly comprises a heat dissipation assembly, a fixing assembly, a first connecting piece, a second connecting piece and a driving part;

when the driving part changes from the first shape to the second shape, the driving part pulls the heat dissipation assembly to rotate.

It should be noted that, in the present embodiment, the driving member is made of a memory material having a shape memory property.

Alternatively, the first structural member may have a first recessed area in which the heat sink is placed so that the heat sink does not occupy additional volume of the terminal.

It should be noted that, in this embodiment, the terminal may further include a heat dissipation channel and a heat dissipation port, the heat dissipation device and the heat dissipation port are respectively located at two sides of the heat dissipation channel, and the airflow generated by the heat dissipation device is exhausted from the heat dissipation port through the heat dissipation channel, so as to further improve the heat dissipation performance of the terminal.

Illustratively, a specific embodiment of this embodiment is shown in fig. 1. The terminal includes: a heat sink, a first component 7, a first structural member 8, and a second structural member 9.

Wherein, this heat abstractor includes: the fan wheel 1, the first fixed shaft 2, the second fixed shaft 4, the first bearing 3, the second bearing 5 and the spring 6;

in this embodiment, the first component 7 is to be fixedly connected to the second structural member 9.

It should be noted that the first device 7 may be a CPU, a battery, or any other device capable of generating heat, and the embodiment of the present invention is not limited in this respect.

It should be noted that the second structural component may be a main board, a sub board, a PCB, a rear cover, or another circuit board, which is not specifically limited in this embodiment of the present invention.

In particular, as shown in fig. 2 in conjunction with fig. 1, the spring 6 includes a first spring 6.1, a second spring 6.2, a third spring 6.3 and a fourth spring 6.4, one end of each of the first spring 6.1, the second spring 6.2, the third spring 6.3 and the fourth spring 6.4 is connected with the second bearing 5, the other end of each of the first spring 6.1, the second spring 6.2, the third spring 6.3 and the fourth spring 6.4 is connected with the impeller 1 at a first fixed point, a second fixed point, a third fixed point and a fourth fixed point respectively, and the first fixed point, the second fixed point, the third fixed point and the fourth fixed point are located at different positions of the outer edge of the impeller 1, angles exist among the first spring 6.1, the second spring 6.2, the third spring 6.3 and the fourth spring 6.4 respectively, so that when the spring 6 is deformed, the spring 6 provides a non-external force to the impeller 1, and the impeller 1 rotates under the action of zero external force, thereby operating the heat sink.

Preferably, as shown in fig. 2, the first heat dissipation assembly of the heat dissipation device is placed in close proximity to the first device 7, and the heat dissipation device is placed opposite to the first device 7, and the center of the first device 7 is located at one side of the heat dissipation device, so that when the first device 7 releases heat, in the heat dissipation device, the temperature of a portion of the springs is higher than the memory temperature, and the portion of the springs is transformed from the first shape to the second shape, i.e., stretched or contracted, due to the memory property of the memory material, so that the length of the portion of the springs with the temperature higher than the memory temperature is changed; the temperature of the other part of the spring is lower than the memory temperature, so that the part of the spring is not subjected to memory deformation, the length of the spring is kept unchanged, the stress balance of the fan wheel 1 is broken, namely the spring with the changed length provides force for the fan wheel 1, the resultant external force applied to the fan wheel 1 is not zero, the fan wheel 1 rotates, and the heat dissipation function is realized by the heat dissipation device.

The terminal provided by the embodiment of the invention can realize various working states of the heat dissipation device, and is not described again to avoid repetition.

In the embodiment, the driving part made of the memory material is used as a power source of the heat dissipation device, the shape memory characteristic of the memory material is utilized, and the driving part is different in shape at different temperatures, so that power is provided for the heat dissipation device, the fan body rotates to dissipate heat, the technical effect of promoting the air flow inside the terminal is achieved, and the terminal is facilitated to dissipate heat more quickly and better. In addition, the heat abstractor that the terminal that this embodiment provided belongs to self-driving device, need not to use extra part to provide power for the device, consequently occupation space is less, is favorable to reducing the terminal volume to it is energy-concerving and environment-protective more.

While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A heat dissipation device applied to a terminal is characterized by comprising: the heat dissipation assembly comprises a heat dissipation assembly, a fixing assembly, a first connecting piece, a second connecting piece and a driving part;

the fixed assembly is connected with a first structural member of a terminal, the first connecting piece is sleeved with the fixed assembly, the first connecting piece is fixedly connected with the heat dissipation assembly, and the second connecting piece is sleeved with the fixed assembly;

one end of the driving part is connected with the second connecting part, the other end of the driving part is connected with the heat dissipation assembly at a fixed point, and the fixed point is not collinear with the center of the first connecting part and the center of the second connecting part;

when the driving part changes from the first shape to the second shape, the driving part pulls the heat dissipation assembly to rotate;

the drive member is composed of a memory material having shape memory properties.

2. The heat dissipating device of claim 1, wherein said securing assembly comprises: the terminal comprises a first fixing piece and a second fixing piece, wherein one end of the first fixing piece is connected with a first structural component at a terminal, the other end of the first fixing piece is fixedly connected with the second fixing piece, the first connecting piece is sleeved with the first fixing piece, and the second connecting piece is sleeved with the second fixing piece.

3. The heat dissipating device of claim 2, wherein said first fixing member is a first fixing shaft, said second fixing member is a second fixing shaft, said first connecting member is a first bearing, said second connecting member is a second bearing, and said driving member is a spring.

4. The heat dissipating device of claim 1, wherein said attachment point is located on an outside edge of said heat dissipating assembly.

5. The heat dissipation device of claim 3, wherein the spring comprises a first spring, a second spring, a third spring, and a fourth spring, the first spring, the second spring, the third spring, and the fourth spring are connected to the heat dissipation assembly at a first fixed point, a second fixed point, a third fixed point, and a fourth fixed point, respectively, the first fixed point, the second fixed point, the third fixed point, and the fourth fixed point are located at different positions on an outer edge of the heat dissipation assembly, and angles are formed between the first spring, the second spring, the third spring, and the fourth spring, respectively.

6. The heat dissipating device of claim 1, wherein said heat dissipating assembly is a plurality of fins, said fins comprising a memory material, said fins expanding at high temperatures and contracting at low temperatures.

7. The heat dissipating device of claim 6, wherein said fan is comprised of a memory material having a two-way memory characteristic, said memory material having a first memory temperature and a second memory temperature, said first memory temperature being greater than said second memory temperature;

8. A terminal characterized in that the terminal has a heat dissipating arrangement according to any of claims 1-7.

9. The terminal of claim 8, further comprising a first component, wherein the heat dissipation assembly in the heat dissipation device is positioned eccentrically opposite the first component.

10. The terminal of claim 8, further comprising a heat dissipation channel and a heat dissipation port, wherein the heat dissipation device and the heat dissipation port are respectively located at two sides of the heat dissipation channel, and wherein the airflow generated by the heat dissipation device is exhausted from the heat dissipation port through the heat dissipation channel.