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A fixed structure of components and pcb board and mobile terminal

A technology of PCB board and fixed structure, applied in the field of mobile communication, can solve problems such as affecting the setting or connection of other components, large welding error, and inability to accurately locate the welding position of components.

Active Publication Date: 2019-08-16
NUBIA TECHNOLOGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The main purpose of the present invention is to propose a fixed structure of components and PCB boards and a mobile terminal, aiming at solving the problem of inability to accurately locate components on the pads when soldering pads with large areas and components in the prior art Soldering position, resulting in large welding errors and affecting the setting or connection of other components

Method used

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  • A fixed structure of components and pcb board and mobile terminal
  • A fixed structure of components and pcb board and mobile terminal
  • A fixed structure of components and pcb board and mobile terminal

Examples

Experimental program
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Effect test

Embodiment 1

[0038] The first embodiment of the present invention proposes a fixing structure for components and PCB boards, such as figure 1 with figure 2 As shown, pads 2 are set on PCB 1, and the number and installation position of pads 2 correspond to the position and size of components to be installed. One pad may correspond to one component, or several pads may correspond to one Components, this embodiment describes the situation that one pad corresponds to one component.

[0039] Such as figure 1 with figure 2 As shown, a piece of solder resist 3 is provided on the top of the pad 2. The area of ​​the solder resist 3 is smaller than the area of ​​the top of the pad 1. The solder resist is generally green or other colors, which plays an insulating role and prevents solder from adhering. On some copper wires that don't need to be soldered. It also protects the wiring layer to a certain extent. In this embodiment, green oil 3 is preferably used as the solder resist, and the gree...

Embodiment 2

[0046] The second embodiment of the present invention proposes a fixing structure for components and PCB boards, such as Figure 6 - Figure 8 As shown, two or more pads are set on the PCB 1, and the components corresponding to these pads are relatively large.

[0047] Such as Figure 6 As shown, two pads are set on the PCB board 1, which are pads 21 and pads 22, respectively. The pads 21 and 22 correspond to the two ends of the same component, and the pads 21 are provided with green oil. 31. The green oil 32 is set on the pad 22, and the green oil 31 and the green oil 32 are on the same straight line. When the through holes corresponding to the green oil 31 and the green oil 32 on the component are respectively aligned with the green oil 31 and the green oil 32, The installation positions of components and pads 21 and 22 are accurate.

[0048] Such as Figure 7 with Figure 8 As shown, four pads are arranged on the PCB board 1, which are respectively pad 21, pad 22, pad ...

Embodiment 3

[0054] The third embodiment of the present invention proposes a mobile terminal. The mobile terminal is provided with a PCB board, and pads are provided on the PCB board. The number of pads corresponds to the installation position of the components to be installed, and one pad corresponds to one component. , or several pads can correspond to a component.

[0055] A piece of solder resist is arranged on the top of the pad. In this embodiment, green oil is preferably used as the solder resist, and the green oil is arranged on the pad by screen printing. The component 4 is arranged on the pad, and the PIN pin of the component is welded on the pad by welding. The center of the component is provided with a through hole, and the green oil on the pad is set at the center of the top of the pad, and the area is smaller than that of the solder pad. The area of ​​the top surface of the disk is also smaller than the area of ​​the bottom surface of the component. In order to correspond acc...

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Abstract

The invention discloses a fixing structure for components and a PCB and a mobile terminal. The PCB is provided with solder discs having the corresponding number and installing positions to those of the components. A piece of solder resist is arranged on the top part of the solder discs. The area of the solder resist is less than the area of the top part of the solder discs. When the components and the solder discs are soldered, the components determine the solder positions of the components on the solder discs by the position of the solder resist. The positions of the solder discs and the components are enabled to be accurately corresponding rapidly and simply so that the installing accuracy and speed of the whole PCB can be enhanced.

Description

technical field [0001] The invention relates to the technical field of mobile communication, in particular to a fixing structure of components and PCB boards and a mobile terminal. Background technique [0002] Pad, the basic constituent unit of surface mount assembly, is used to form the land pattern of the circuit board, that is, various combinations of pads designed for special component types. [0003] When the pad is soldered to the components on it, because of the large area of ​​the pad, the fixed position of the component and the pad will often move, which will affect the position tolerance between the entire PCB components, and will also cause the component to be incompatible with the pad. The alignment of the corresponding components is not accurate. [0004] In high-density boards, especially mobile phone boards, the device density is very high and the spacing between devices is small. The structural devices that need to be patched on the mobile phone board must...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05K1/18H05K3/34
CPCH05K1/181H05K3/341H05K2203/048
Inventor 张永松
Owner NUBIA TECHNOLOGY CO LTD