CN108990390B

CN108990390B - Mobile terminal heat dissipation device and mobile terminal

Info

Publication number: CN108990390B
Application number: CN201811015311.XA
Authority: CN
Inventors: 陈乐华
Original assignee: Shenzhen Wenyao Electronic Technology Co ltd
Current assignee: Shenzhen Wenyao Electronic Technology Co ltd
Priority date: 2018-08-31
Filing date: 2018-08-31
Publication date: 2023-02-03
Anticipated expiration: 2038-08-31
Also published as: CN108990390A

Abstract

The invention discloses a mobile terminal heat dissipation device, which comprises a shell with an electrical cavity and a circuit board which is packaged in the electrical cavity and is provided with a vibration motor and at least two plug-in bodies, wherein the shell is provided with plug holes which are communicated with the plug-in bodies one by one, an output shaft of the vibration motor is sleeved with an eccentric wheel and is connected with a fan, the output shaft is provided with a transmission elastic sheet connected with the eccentric wheel, and the transmission elastic sheet is respectively connected with the eccentric wheel in a sliding manner or in a fixed manner along with the positive and negative rotation of the output shaft; the circuit board is provided with a partition board which divides the electrical cavity into two heat dissipation spaces, the two heat dissipation spaces are communicated through a fan, and each heat dissipation space is provided with at least one plug-in body. The invention also discloses a mobile terminal comprising the mobile terminal heat dissipation device. The invention has the beneficial effects that: make the shock motor can shake again can drive the fan heat dissipation through the transmission shell fragment, and will insert the body and regard as the import and the export of cooling air current, simple structure and low price improve the radiating efficiency.

Description

Mobile terminal heat dissipation device and mobile terminal

[ technical field ] A method for producing a semiconductor device

The invention relates to the technical field of mobile terminals, in particular to a mobile terminal heat dissipation device and a mobile terminal.

[ background of the invention ]

With the development of science and technology, mobile terminals such as mobile phones and tablet computers are widely used, and the performance of the mobile terminals is more and more powerful, and accordingly the heat dissipation performance of the mobile terminals is more and more important. Among the prior art, the source that generates heat of mobile terminal when using is the mainboard, it is exactly that all kinds of chips of integrated on the mainboard can produce a large amount of heats when using, and the life-span and the performance of chip all receive the influence of temperature great, consequently, in order to reduce the temperature of chip, at present adopt heat-conducting mode to cool down the chip usually, one mode is to cover heat dissipation silica gel on the chip that generates heat in order to absorb the heat, another mode is attached graphite cooling fin on mobile terminal's casing and absorbs the heat that the chip produced, both are passive absorption heat, the radiating efficiency is low, the radiating effect is relatively poor.

In view of the above, it is desirable to provide a heat dissipation device for a mobile terminal and a mobile terminal to overcome the above-mentioned drawbacks.

[ summary of the invention ]

The invention aims to provide a mobile terminal heat dissipation device and a mobile terminal using the same, and aims to realize the purpose of dissipating heat of the mobile terminal through air cooling and improve the heat dissipation performance of the mobile terminal by reforming and utilizing existing components in the mobile terminal.

In order to achieve the purpose, the invention provides a mobile terminal heat dissipation device, which comprises a shell with an accommodating cavity and a circuit board which is packaged in the accommodating cavity and is provided with a vibration motor and at least two plug-in bodies, wherein the shell is provided with plug holes which are communicated with the plug-in bodies one by one, an output shaft of the vibration motor is sleeved with an eccentric wheel and is connected with a fan, a transmission elastic sheet connected with the eccentric wheel extends from the output shaft, and the transmission elastic sheet is respectively connected with the eccentric wheel in a sliding manner or fixedly along with the positive and negative rotation of the output shaft; the circuit board is also provided with a partition board which divides the accommodating cavity into two heat dissipation spaces, the two heat dissipation spaces are communicated through a fan, and at least one plug-in body is arranged in each heat dissipation space.

In a preferred embodiment, the eccentric wheel is provided with a shaft hole for the output shaft to pass through, and a shaft sleeve which is sleeved outside the output shaft and connected with the transmission elastic sheet is embedded in the shaft hole; the transmission elastic sheet bends along the forward rotation direction of the output shaft to be in sliding fit with the inner wall of the shaft sleeve when the transmission elastic sheet rotates forward along with the output shaft; the transmission elastic sheet clamps the inner wall of the shaft sleeve to drive the eccentric wheel to rotate when the transmission elastic sheet rotates along with the output shaft reversely.

In a preferred embodiment, the transmission elastic sheet is arranged in axial symmetry along the central axis of the output shaft, and the center of gravity of the eccentric wheel is arranged on one side of the central axis of the output shaft.

In a preferred embodiment, the fan comprises a fan casing with an air inlet chamber and a rotating shaft packaged in the air inlet chamber, the rotating shaft is connected with the output shaft and is provided with a plurality of turbine blades in an extending manner on the surface, two ends of the fan casing are respectively provided with a vent hole communicated with the air inlet chamber, one vent hole is communicated with one heat dissipation space, and the other vent hole is communicated with the other heat dissipation space.

In a preferred embodiment, the turbine blades are arranged in multiple stages along the length direction of the rotating shaft, each stage is provided with the same number of turbine blades, and the turbine blades of each stage are arranged in axial symmetry along the central axis of the rotating shaft.

In a preferred embodiment, the end of the turbine blade remote from the axis of rotation is in clearance fit with the inner wall of the inlet chamber.

In a preferred embodiment, the plug-in body is at least two of an earphone socket, a storage card socket, a SIM card socket and a USB port.

In a preferred embodiment, the circuit board has four plug-in units, one of the plug-in units is an earphone socket and communicates one heat dissipation space with the outside, and the other three plug-in units are respectively a storage card socket, an SIM card socket and a USB port and communicate another heat dissipation space with the outside.

In a preferred embodiment, the circuit board is further provided with a controller and a temperature sensor which are both electrically connected with the vibration motor, and the controller is used for controlling the reverse rotation of the vibration motor to drive or stop the rotation of the eccentric wheel; the temperature sensor detects the temperature of the circuit board and drives or stops the fan to rotate through the forward rotation of the vibration motor according to the temperature of the circuit board.

The invention also provides a mobile terminal comprising the mobile terminal heat dissipation device.

The mobile terminal heat dissipation device provided by the invention has the advantages that the transmission elastic sheet connected with the eccentric wheel is arranged on the output shaft of the vibration motor, the vibration function of the vibration motor is not influenced, the vibration motor can be used as a driving source of the fan for heat dissipation, the use function of the vibration motor is increased, and meanwhile, the plug-in connector is used as an inlet and an outlet of cooling air flow, so that the heat dissipation of the mobile terminal can be realized in an active air cooling mode without adding an additional air path component on the mobile terminal, the fan is simple in structure and low in price, the heat dissipation efficiency is improved, and the manufacturing cost of the mobile terminal is not influenced.

In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

[ description of the drawings ]

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of a heat dissipation device of a mobile terminal according to the present invention.

Fig. 2 is a schematic structural diagram of the vibration motor and the fan shown in fig. 1.

Fig. 3 is a cross-sectional view taken along the direction AA shown in fig. 2.

[ detailed description ] A

In order to make the objects, technical solutions and advantageous technical effects of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and the detailed description. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.

Referring to fig. 1 to 3, the present invention provides a mobile terminal heat dissipation device 100 and a mobile terminal using the mobile terminal heat dissipation device 100, wherein the mobile terminal heat dissipation device 100 has a small volume and a simple and reliable structure, so that the mobile terminal has good heat dissipation performance and can control cost better.

In the embodiment of the invention, the heat dissipation device 100 of the mobile terminal comprises a housing 10 having a receiving cavity 11 and a circuit board 20 enclosed in the receiving cavity 11 and having a vibration motor 21 and at least two plug-in bodies 22. The vibration motor 21 is configured to implement a vibration function of the mobile terminal, the socket body 22 is configured to connect to an external device of the mobile terminal, for example, the socket body 22 may be at least two of an earphone socket, a storage card socket, an SIM card socket, and a USB port, the earphone socket is configured to connect to an earphone for audio output of the mobile terminal, the storage card socket is configured to install an SD card for improving a storage capability of the mobile terminal, the SIM card socket is configured to install a communication chip for a communication function of the mobile terminal, and the USB port is configured to serve as a data exchange port of the mobile terminal.

Specifically, the output shaft 211 of the vibration motor 21 is sleeved with an eccentric wheel 212 and connected with the fan 213, and a transmission elastic sheet 2121 connected with the eccentric wheel 212 extends from the output shaft 211, the transmission elastic sheet 2121 is slidably connected or fixedly connected with the eccentric wheel 212 respectively along with the forward rotation and the reverse rotation of the output shaft 211, that is, the transmission elastic sheet 2121 can slidably connect with the eccentric wheel 212 along with the forward rotation of the output shaft 211 and only drive the fan 213 to operate for heat dissipation, and the transmission elastic sheet 2121 can also fixedly connect with the eccentric wheel 212 along with the reverse rotation of the output shaft 211 and drive the eccentric wheel 212 to cause rotational vibration. The circuit board 20 is further provided with a partition 23 dividing the receiving cavity 11 into two heat dissipation spaces 111, the two heat dissipation spaces 111 are communicated through a fan 213, and each heat dissipation space 111 is provided with at least one plug-in connector 22, and then under the action of the fan 213, the plug-in connector 22 in one heat dissipation space 111 serves as an air inlet channel to introduce cold air, and the plug-in connector 22 in the other heat dissipation space 111 serves as an air outlet channel to exhaust hot air, so that the purpose of cooling and heat dissipation of the circuit board 20 is achieved.

Further, in a more specific embodiment, the circuit board 20 has four plug-in bodies 22, wherein one plug-in body 22 is an earphone socket and connects one heat dissipation space 111 with the outside, the other three plug-in bodies 22 are a storage socket, a SIM socket and a USB port respectively and connect another heat dissipation space 111 with the outside, when the output shaft 211 of the vibration motor 21 rotates forward, the fan 213 is driven to operate, the earphone socket is used as an air inlet channel and introduces the outside air into the corresponding heat dissipation space 111, and then the introduced air enters another heat dissipation space 111 through the fan 213 to absorb the heat generated by the circuit board 20 and then flows out of the accommodating cavity 11 of the housing 10 through the storage socket, the SIM socket and the USB port which are used as air outlet channels, thereby achieving the purpose of cooling and dissipating heat of the circuit board 20.

According to the heat sink device 100 of the mobile terminal in the embodiment of the present invention, it can be understood that, by disposing the transmission elastic sheet 2121 connected to the eccentric wheel 212 on the output shaft 211 of the vibration motor 21, the vibration function of the vibration motor 21 is not affected, and the vibration motor 21 can be used as the driving source of the fan 213 for heat dissipation, thereby expanding the use function of the vibration motor 21. Meanwhile, the plug-in body 22 is used as an inlet and an outlet of cooling air flow, so that the heat of the mobile terminal can be dissipated by an active air cooling mode without adding an additional air channel component on the mobile terminal, the fan 213 has a simple structure and a low price, and the manufacturing cost of the mobile terminal is not influenced while the heat dissipation efficiency is improved.

In some embodiments of the present invention, the fan 213 includes a fan shell 2132 having an air inlet chamber 2131 and a rotating shaft 2133 enclosed in the air inlet chamber 2131, the rotating shaft 2133 is connected to the output shaft 211 and has a plurality of turbine blades 2134 extending from a surface thereof, two ends of the fan shell 2132 are respectively provided with a ventilating hole 2135 communicating with the air inlet chamber 2131, one ventilating hole 2135 is communicated with one heat dissipating space 111, and the other ventilating hole 2135 is communicated with the other heat dissipating space 111. In the present embodiment, the fan case 2132 and the intake chamber 2131 are both cylindrical and are disposed coaxially.

Further, in one embodiment, the outer sides of both ends of the fan case 2132 are respectively protruded to form a cylindrical ventilating column 2136, and each ventilating hole 2135 is coaxially disposed with one ventilating column 2136 and penetrates both ends of the ventilating column 2136 to communicate the air intake chamber 2131 with one heat radiating space 111. In the present embodiment, the fan 213 is disposed at the edge of the circuit board 20, the partition 23 on the circuit board 20 extends from the side of the fan casing 2132 where the ventilation column 2136 is disposed to an end of the plug-in unit 22 away from the casing 10, and an end of the partition 23 close to the fan casing 2132 is clamped between the two ventilation columns 2136, that is, the fan 213 is disposed between the partition 23 and the inner wall of the casing 10 to enable the two heat dissipation spaces 111 to communicate with each other through the fan 213.

Further, in one embodiment, the turbine blades 2134 on the rotating shaft 2133 are arranged in multiple stages along the length direction of the rotating shaft 2133, each stage is provided with the same number of turbine blades 2134, and the turbine blades 2134 of each stage are arranged in axial symmetry along the central axis of the rotating shaft 2133, so that the air in the air inlet chamber 2131 is pressurized under the action of the turbine blades 2134 of each stage, thereby increasing the flow rate of the air entering the heat dissipation space 111 from the air inlet chamber 2131, and improving the heat dissipation efficiency. In this embodiment, an end of the turbine blade 2134 away from the rotating shaft 2133 is in clearance fit with an inner wall of the intake chamber 2131 to facilitate the turbine blade 2134 to rotate along with the rotating shaft 2133.

In some embodiments of the present invention, the eccentric wheel 212 is provided with a shaft hole 2122 for the output shaft 211 to pass through, a shaft sleeve 2123 is embedded in the shaft hole 2122 and is sleeved outside the output shaft 211 and connected to the transmission elastic sheet 2121, the transmission elastic sheet 2121 bends along the forward rotation direction of the output shaft 211 when following the forward rotation of the output shaft 211 to be in sliding fit with the inner wall of the shaft sleeve 2123, and the transmission elastic sheet 2121 clamps the inner wall of the shaft sleeve 2123 when following the reverse rotation of the output shaft 211 to be fixedly connected to the shaft sleeve 2123 and drive the eccentric wheel 212 to cause vibration.

Further, in one embodiment, the driving spring 2121 is axially symmetrically disposed along the central axis of the output shaft 211 to make the force between the driving spring 2121 and the shaft sleeve 2123 uniform, and the center of gravity of the eccentric 212 is disposed at one side of the central axis of the output shaft 211, so that the eccentric 212 rotates along with the output shaft 211 to cause the vibration of the vibration motor 21.

In one embodiment, the circuit board 20 is further provided with a controller 24 and a temperature sensor 25, both of which are electrically connected to the vibration motor 21. Wherein, the controller 24 is used for controlling the reverse rotation of the vibration motor 21 to drive or stop the rotation of the eccentric wheel 212, thereby causing the vibration or stopping the vibration. The temperature sensor 25 detects the temperature of the circuit board 20 and controls the forward rotation of the vibration motor 21 according to the temperature of the circuit board 20 to drive or stop the rotation of the fan 213, so as to control the fan 213 to dissipate heat from the circuit board 20 or stop dissipating heat, in the present embodiment, the temperature sensor 25 sets a temperature threshold, and when the temperature sensor 25 detects that the temperature of the circuit board 20 is equal to or greater than the temperature threshold, the temperature sensor 25 controls the forward rotation of the vibration motor 21 to dissipate heat until the temperature of the circuit board 20 is lower than the temperature threshold, and stops the forward rotation of the vibration motor 21. It should be noted that when the mobile terminal requires both vibration and heat dissipation, the vibration motor 21 is reversed under the control of the controller 24 and causes vibration. Further, the controller 24 and the temperature sensor 25 are controlled by software to facilitate automatic control of the vibration motor 21.

Further, in one embodiment, the vibration motor 21, the connector 22, the controller 24 and the temperature sensor 25 are integrated on the circuit board 20 by means of patches.

The invention is not limited solely to that described in the specification and embodiments, and additional advantages and modifications will readily occur to those skilled in the art, so that the invention is not limited to the specific details, representative apparatus, and illustrative examples shown and described herein, without departing from the spirit and scope of the general concept as defined by the appended claims and their equivalents.

Claims

1. A mobile terminal heat dissipation device comprises a shell with a containing cavity and a circuit board which is packaged in the containing cavity and is provided with a vibration motor and at least two plug bodies, wherein the shell is provided with plug holes which are communicated with the plug bodies one by one; the circuit board is also provided with a partition board which divides the accommodating cavity into two heat dissipation spaces, the two heat dissipation spaces are communicated through a fan, and each heat dissipation space is provided with at least one plug-in body;

the fan comprises a fan shell with an air inlet chamber and a rotating shaft packaged in the air inlet chamber, the rotating shaft is connected with the output shaft and is provided with a plurality of turbine blades in an extending mode on the surface, two ends of the fan shell are respectively provided with a vent hole communicated with the air inlet chamber, one vent hole is communicated with one heat dissipation space, and the other vent hole is communicated with the other heat dissipation space.

2. The mobile terminal heat dissipation device of claim 1, wherein the eccentric wheel is provided with a shaft hole for the output shaft to pass through, and a shaft sleeve sleeved outside the output shaft and connected with the transmission elastic sheet is embedded in the shaft hole; the transmission elastic sheet bends along the positive rotation direction of the output shaft to be in sliding fit with the inner wall of the shaft sleeve when rotating along with the positive rotation of the output shaft; the transmission elastic sheet clamps the inner wall of the shaft sleeve to drive the eccentric wheel to rotate when the transmission elastic sheet rotates along with the output shaft reversely.

3. The heat dissipation device for the mobile terminal according to claim 2, wherein the transmission spring is disposed axially symmetrically along the central axis of the output shaft, and the center of gravity of the eccentric wheel is disposed at one side of the central axis of the output shaft.

4. The heat sink for mobile terminal as claimed in claim 1, wherein the turbine blades are arranged in multiple stages along the length direction of the rotating shaft, each stage has the same number of turbine blades, and the turbine blades of each stage are arranged in axial symmetry along the central axis of the rotating shaft.

5. The mobile terminal heat sink according to claim 4, wherein an end of the turbine blade away from the axis of rotation is in clearance fit with an inner wall of the inlet chamber.

6. The heat dissipation device of claim 1, wherein the plug-in connector is at least two of an earphone socket, a storage card socket, a SIM card socket and a USB port.

7. The heat dissipation device of claim 6, wherein the circuit board has four plug-in units, one of the plug-in units is an earphone socket and connects one heat dissipation space with the outside, and the other three plug-in units are a storage card socket, a SIM card socket and a USB port respectively and connect another heat dissipation space with the outside.

8. The heat dissipation device for the mobile terminal according to claim 1, wherein the circuit board further comprises a controller and a temperature sensor both electrically connected to the vibration motor, the controller is configured to control the vibration motor to rotate in reverse to drive or stop the eccentric wheel; the temperature sensor detects the temperature of the circuit board and controls the forward rotation of the vibration motor according to the temperature of the circuit board so as to drive or stop the rotation of the fan.

9. An intelligent terminal, characterized by comprising the mobile terminal heat dissipation device of any one of claims 1 to 8.