Back surface mounting type airflow sensor and welding structure

A technology of airflow sensor and welding structure, which is applied in the direction of electrical connection of printed components, instruments, measuring devices, etc.

Pending Publication Date: 2021-04-20
深圳市尹泰明电子有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the problems existing in the prior art, the main purpose of the present invention is to provide a back-mounted airflow sensor, which aims to solve the problem of directional mounting of the mounted airflow sensor during reflow soldering

Method used

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  • Back surface mounting type airflow sensor and welding structure
  • Back surface mounting type airflow sensor and welding structure
  • Back surface mounting type airflow sensor and welding structure

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Embodiment Construction

[0025]Next, the technical solutions in the embodiments of the present invention will be described in conjunction with the present invention, which is clearly, and it is intended to be described herein, not all of the embodiments of the present invention, not all of the embodiments of the invention. Based on the embodiments of the present invention, there are all other embodiments obtained without making creative labor without making creative labor premises.

[0026]Please refer to the instructionsFigure 1-3In the embodiment of the present invention, a back surface mount type gas flow sensor is proposed, and the housing 100 of the back surface mount type gas flow sensor is opened, and the package body formed by the PCB plate 200, and the bottom wall of the outer casing 100 is provided with the package communication. The first air hole 100a, the PCB plate 200 is provided with a second pore 200a in communication with the package, and a diaphragm 300 and a pole piece 400 disposed up and do...

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Abstract

The invention discloses a back surface mounting type airflow sensor and a welding structure, a circular welding bulge is arranged in the center of a PCB, a plurality of annular welding bulges concentric with the circular welding bulge are arranged, the circular welding bulge matches the plurality of annular welding bulges to be used as welding pins of the airflow sensor, and meanwhile, the circuit board is provided with a circular bonding pad position corresponding to the circular welding bulge and annular bonding pad positions corresponding to the annular welding bulges one to one, and before reflow soldering, the annular welding bulges can be aligned with the corresponding annular bonding pad positions only by aligning and mounting the center of the PCB and the circular bonding pad position on the circuit board. The orientation process of the airflow sensor is omitted, and the convenience of reflow soldering of the airflow sensor can be greatly improved.

Description

Technical field[0001]The present invention relates to the technical field of airflow sensors, and in particular, to a back-mounted air flow sensor and a welding structure.Background technique[0002]Traditional airflow sensors are typically electrically connected to the printed circuit board through lead or self-contained pins, which requires welding operation by manual. However, the size of the airflow sensor itself is very small, the welding is difficult, which is very easy to form a variety of non-welding, short circuit, and open circuits, even skilled welding workers, its welding is about 2% to 3%, severely reduced airflow Reliability and security in sensors.[0003]Currently Mature Surface Mounting Technology (SMT) can achieve automatic patching, fully automatic welding through reflow welding, can greatly reduce the poor adverse electronic device in welding assembly (non-poor rate can be controlled below 0.2 ‰ or less), improve the electronic device Reliability and security.[0004]T...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05K1/11H05K1/18G01F1/34G01L13/02G01L9/00G01L19/14G01L19/06
Inventor 王璐槐
Owner 深圳市尹泰明电子有限公司
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