CN203722986U - Mobile terminal - Google Patents

Abstract

The utility model provides a mobile terminal, comprising a front shell, a rear shell, an audio component and a printed circuit board arranged between the front shell and the rear shell, and a heat conducting component, the audio component and the printed circuit An accommodating space is provided between the boards, the heat-conducting component is arranged in the accommodating space, the first surface of the heat-conducting component is in contact with the surface of the magnetic structure of the audio component, and the second surface is grounded with the printed circuit board copper contact. The beneficial effect of the utility model is that the heat generated by the audio component can be evenly conducted through the heat conduction component by setting a heat conduction component between the audio component and the printed circuit board and connected to both of them. On the printed circuit board, the heat dissipation effect of the audio components is increased, thereby effectively dissipating the heat generated by the audio components during use, and while enhancing the reliability of the audio components, it also increases its service life.

Description

a mobile terminal

technical field

The utility model relates to a mobile terminal, in particular to a mobile terminal which enhances the reliability of audio components.

Background technique

Existing mobile terminals are equipped with at least one audio component, most commonly including a speaker (Speaker) and a receiver (Receiver). Among them, the Speaker is used for MP3 playback, hands-free calls, ringtones for incoming calls, etc.; the Receiver is used for handheld calls. In order to meet the needs of different users and different application scenarios, the terminal software will set the loudness of the sound to different levels. When the user needs a louder loudness, such as playing MP3 or talking in a noisy environment, the output power of the audio components will naturally will also increase. When the audio component works at a high volume for a long time, the body of the audio component will gradually heat up, and the temperature of the internal magnetic structure will rise. This will not only reduce the sensitivity of the audio component, but also affect the magnetic flux density, which will cause distortion and even cause the audio component to damage.

To solve this problem, the current common solutions are: 1. Use NdFeB materials, which can withstand high temperatures of about 150 degrees; 2. Reduce the loudness of the bell. Although traditional solutions can solve the heating problem of audio components to a certain extent, the cost of using NdFeB materials is very high, and reducing the loudness of the ringtone will affect the user experience, and this problem needs to be solved.

Utility model content

Based on the above-mentioned defects in the prior art, the purpose of this utility model is to provide a mobile terminal, which solves the problem that the audio components of the mobile terminal are easily damaged because the heating problem cannot be effectively improved.

The utility model provides a mobile terminal, comprising a front shell, a rear shell, an audio component and a printed circuit board arranged between the front shell and the rear shell, and a heat conducting component, the audio component and the printed circuit An accommodating space is provided between the boards, the heat-conducting component is arranged in the accommodating space, the first surface of the heat-conducting component is in contact with the surface of the magnetic structure of the audio component, and the second surface is grounded with the printed circuit board copper contact.

Preferably, the heat conduction component is a sheet structure.

Preferably, the thickness of the heat conducting component is 0.1mm.

Preferably, the first surface of the heat conducting component completely covers the surface of the magnetic structure of the audio component.

Preferably, the first surface of the heat conducting component is adhesively connected to the surface of the magnetic structure of the audio component.

Preferably, the rear shell is provided with a sound cavity for accommodating the audio components, and after assembly, the audio components, heat-conducting components, and printed circuit board are crimped together sequentially under the extrusion of the rear shell.

Preferably, foam is also adhered to the sound cavity, and the diaphragm surface of the audio component is adhered to the foam.

Preferably, the grounded copper surface of the printed circuit board is in contact with the front shell through a metal bracket.

Preferably, the material of the heat-conducting component is graphite or heat-conducting silica gel.

Advantageously, said audio components include at least one speaker and one microphone.

The beneficial effect of the utility model is that the heat generated by the audio component can be evenly conducted through the heat conduction component by setting a heat conduction component between the audio component and the printed circuit board and connected to both of them. On the printed circuit board, the heat dissipation effect of the audio components is increased, thereby effectively dissipating the heat generated by the audio components during use, and while enhancing the reliability of the audio components, it also increases its service life.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is a structural schematic diagram of the audio component of the present invention.

Detailed ways

In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

Fig. 1 is the structural representation of the utility model. As shown in Figure 1, the utility model provides a mobile terminal, including a front case 1, a rear case 2, an audio component 3 arranged between the front case 1 and the rear case 2, a printed circuit board 4 (PCB-Printed Circuit Board) and heat conduction components 5. In this embodiment, the bottom of the rear shell 2 is provided with a sound cavity 21 for accommodating the audio component 3, and the foam 6 that limits the displacement of the audio component 3 is adhered to the sound cavity 21, and the diaphragm surface of the audio component 3 is adhered to the foam 6 on. An accommodating space for accommodating the heat-conducting component 5 is provided between the audio component 3 and the printed circuit board 4 . In this embodiment, the heat-conducting component 5 is sheet-shaped heat-conducting silica gel. In order to ensure its good heat storage capacity, the thickness of the heat-conducting silica gel is about 0.1 mm. As shown in FIG. 1 and FIG. 2, the heat conduction component 5 is disposed in the accommodation space formed by the audio component 3 and the printed circuit board 4, and the first surface of the heat conduction component 5 is adhesively connected to the magnetic structure surface 31 of the audio component 3, The second surface is in contact with the grounded copper surface 41 of the PCB 4 . In this embodiment, in order to achieve better heat conduction effect, the first surface of the heat conduction component 5 completely covers the magnetic structure surface 31 of the audio component 3 . In this way, the heat generated by the audio component 3 during work can be effectively conducted to the PCB 4 through the heat conduction component 5, and the original radiation heat dissipation method is optimized to the heat conduction heat dissipation method, which increases the heat transfer efficiency and makes the audio components reliable. Performance is greatly improved and the possibility of audio component damage is reduced. After assembly, under the extrusion of the rear case 2, the audio component 3, the heat conduction component 5, and the PCB 4 are crimped together sequentially to maintain reliable contact.

In order to further improve the heat dissipation effect, the grounded copper surface 41 of the PCB4 can be in contact with the front shell 1 through the metal bracket 8, so that the heat of the audio component 3 is conducted to the copper foil of the PCB4 through the heat conducting component 5, and through these copper foils with higher thermal conductivity The foil spreads the heat to the surface of the PCB4, and then dissipates the heat generated by the audio component 3 to the whole machine through the metal bracket 8, which greatly increases the heat dissipation area and improves the heat dissipation rate.

In this embodiment, the audio component 3 is a single speaker and receiver two-in-one device. The audio component 3 can also be a Speaker and a Receiver respectively placed in the upper and lower sound chambers, or it can be three Speakers to satisfy the stereo experience for music enthusiasts. Graphite can also be selected as the material of the heat conducting member 5 . The heat conduction component 5 itself has good elasticity, strong heat dissipation capability, and high impact load bearing performance. It can not only conduct heat, but also control the displacement of the audio component 3, and protect the audio component 3 when the mobile terminal is impacted by an external force.

In the prior art, the protection of audio components is achieved by sacrificing audio indicators or manufacturing costs, but in this embodiment, a heat-conducting component 5 is added between the audio components 3 and the PCB4, so that the heat generated by the audio components 3 can be reduced. Through the heat conduction component 5, it is evenly conducted to the PCB4, and the original radiation heat dissipation method is converted into a heat conduction heat dissipation method. The copper foil on the PCB4 is a good conductor of heat, and the heat is evenly distributed to the entire PCB4 with the ground hole. , the heat dissipation area is increased, and the heat dissipation effect of the audio component 3 is enhanced. Then, through the metal bracket 8, the heat is further spread from the PCB4 to the whole machine effectively, thus, the heat generated by the audio component 3 can be quickly dissipated to restore the normal temperature. The improvement of the utility model not only enhances the reliability of the audio components, but also increases the service life of the audio components and even the whole machine.

The above embodiments are only used to illustrate the technical solution of the utility model without limitation. Those of ordinary skill in the art should understand that the technical solution of the utility model can be modified or equivalently replaced without departing from the spirit scope of the technical solution of the utility model , which should all be included in the scope of claims of the present utility model.

Claims (10)

1. a mobile terminal, comprise fore shell, back cover, be arranged at acoustic component and printed circuit board between described fore shell and back cover, it is characterized in that, also comprise conducting-heat elements, between described acoustic component and printed circuit board, be provided with spatial accommodation, described conducting-heat elements is arranged in described spatial accommodation, the magnetic texure Surface Contact of the first surface of described conducting-heat elements and described acoustic component, and second contacts with the copper face of described printed circuit plate earthing.

2. mobile terminal according to claim 1, is characterized in that, described conducting-heat elements is sheet body structure.

3. mobile terminal according to claim 2, is characterized in that, the thickness of described conducting-heat elements is 0.1mm.

4. mobile terminal according to claim 1, is characterized in that, the first surface of described conducting-heat elements covers the magnetic texure surface of described acoustic component completely.

5. mobile terminal according to claim 1, is characterized in that, the first surface of described conducting-heat elements is pasted and is connected with the magnetic texure surface of described acoustic component.

6. mobile terminal according to claim 1, is characterized in that, described back cover is provided with the sound chamber for holding described acoustic component, and after assembling, under the extruding of described back cover, described acoustic component, conducting-heat elements, printed circuit board are crimped on together successively.

7. mobile terminal according to claim 6, is characterized in that, in described sound chamber, also sticks and has foam, and the vibrating diaphragm face of described acoustic component attaches on described foam.

8. mobile terminal according to claim 1, is characterized in that, the copper face of described printed circuit plate earthing contacts with described fore shell by metallic support.

9. mobile terminal according to claim 1, is characterized in that, the material of described conducting-heat elements is graphite or heat conductive silica gel.

10. mobile terminal according to claim 1, is characterized in that, described acoustic component comprises at least one loud speaker and a microphone.