External tyre pressure gauge

Abstract

An external tire pressure gauge which solves the problem that the connection between the negative electrode and the circuit board is difficult, A technical scheme comprise a circuit module, The circuit module comprises a circuit board and a negative electrode piece, wherein the negative electrode piece is electrically connected with a button battery and the circuit board; the negative electrode piece is provided with a fixing pin; the circuit board is provided with a fixing hole through which the fixing pin passes; the fixing pin is provided with an elastic clip; and the elastic clip can be abutted on the side of the circuit board opposite to the negative electrode piece after the fixing pin passes through the fixing hole of the circuit board. When connecting the negative plate to the circuit board, the operator only needs to insert the fixing pin on the negative plate into the fixing hole, the elastic deformation of the elastic clip on the fixing foot occurs when the elastic clip passes through the fixing hole, When the elastic card passes through the fixing hole completely, the elastic card returns to the original shape and is engaged with the circuit board. In the installation process, the operator can fix the negative electrode piece with the circuit board only by pressing, which reduces the difficulty of operation, improves the production efficiency and reduces the labor cost.

Description

technical field [0001] The invention relates to the field of tire pressure gauges, in particular to an external tire pressure gauge. Background technique [0002] An external tire pressure gauge is a device for monitoring vehicle tire pressure. The common external tire pressure gauge is small in size and is directly installed on the valve of the car tire, which can monitor the tire pressure of the car in real time during the running of the car. There are positive and negative poles connected to the button battery in the tire pressure gauge. The existing negative poles are connected and fixed on the circuit board by welding in the production process. However, due to the small size of the tire pressure gauge, it is difficult to operate during welding. , It is easy to lead to poor quality of solder joints, which reduces production efficiency and increases labor costs. Contents of the invention [0003] The object of the present invention is to provide an external tire press...

AI Technical Summary

Problems solved by technology

There are positive and negative poles connected to the button battery in the tire pressure gauge. The existing negative poles are connected and fixed on the circuit board by welding in the production process. However, due to the small size of the tire pressure gauge, it is difficult to operate during welding. , easily lead to poor quality of solder joints, reducing production efficiency and increasing labor costs

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