The performance of pogo pins
The spring needle is based on torque and rotation force, so it should have a strong adjustment effect on the stiffness of the spring pogo pins.
Pogo pin stiffness refers to the rotational torque generated in a fixed unit and angular position. If the spring pin has insufficient stiffness, the torque and turning forces are insufficient.
In addition, the pogo pin must pay attention to three points: the deformation is large, the load is large, and the direction of rotation is standardized. Maximum deformation refers to the maximum degree of deformation that the spring can withstand, the higher the degree, the better. In addition, the maximum load refers to the time that the pogo pin can last while maintaining the rotational force. Of course, the longer the duration, the better. Finally, it is also the standard of the direction of rotation, which refers to whether the pogo pin rotates to the left or to the right, the size of the rotation angle, and so on. Of course, the larger the rotation angle, the better.
Carbon spring steel wire torsion spring is a relatively common material. The main material is composed of carbon steel wire. The reason why this material is used more and the temperature span of this material is relatively large, so it is widely used. , Can meet the needs of many industries, let us explain in detail the performance of the sulfur of this material. The pogo pin made of this material is useful. It has high strength and relatively good performance. At the same time, its grades can be divided into B, C, and D. Grade B materials can be used for low-strength pogo pins. Design, the material can be used in low stress. Grade C materials can be used for medium-strength pogo pin designs, and materials can be used for medium-strength. Class D materials can be used for high-strength pogo pin designs, and materials can be used in high stress.
Negative pressure (vacuum): A pressure lower than atmospheric pressure based on atmospheric pressure. Differential pressure: The difference between two pressures. Gauge pressure: Based on atmospheric pressure, pressure greater than or less than atmospheric pressure. Pressure gauge: Based on atmospheric pressure, it is used to measure the vacuum pressure of the instrument that is less than or greater than atmospheric pressure. There are two ways of expression and classification of pressure: one is the pressure expressed based on absolute vacuum, called absolute pressure; the other is based on atmospheric pressure.
The pressure expressed is called relative pressure. Since the pressure measured by most pressure measuring instruments is relative pressure, relative pressure is also called gauge pressure. When the absolute pressure is less than the atmospheric pressure, it can be represented by a value that the absolute pressure in the container is less than one atmospheric pressure. It is called a "vacuum". Their relationship is as follows: absolute pressure = atmospheric pressure + relative pressure vacuum degree = atmospheric pressure-absolute pressure The legal pressure unit in my country is Pa (N/㎡), called Pascal, or Pa for short. Because this unit is too small, 106 times its unit MPa (megapascal) pressure gauge is often used. Application: In the process of industrial process control and technical measurement, the elastic sensitive element of the mechanical pressure gauge has high mechanical strength and production Convenience and other characteristics have made mechanical pressure gauges more and more widely used.
The elastic sensitive element in the mechanical pressure gauge undergoes elastic deformation as the pressure changes. Mechanical pressure gauges use sensitive components such as spring tubes (Bourdon tubes), diaphragms, bellows, and bellows, and are classified according to this. The measured pressure is generally regarded as relative pressure. Generally, the relative point is selected as atmospheric pressure. The elastic deformation of the elastic element under the action of the medium pressure is amplified by the gear transmission mechanism of the pressure gauge, and the pressure gauge will show the relative value (high or low) relative to the atmospheric pressure.
The pressure value of the pogo pin in the measurement range is displayed by the pointer, and the indication range of the dial is generally classified as a 270-degree pressure gauge: pressure gauges can be divided into precision pressure gauges and general pressure gauges according to their measurement accuracy. The measurement accuracy grades of precision pressure gauges are 0.1, 0.16, 0.25, and 0.4 grades; the measurement accuracy grades of general pressure gauges are 1.0, 1.6, 2.5, and 4.0 grades respectively. Pressure gauges are divided into general pressure gauges, absolute pressure gauges, and differential pressure gauges according to their different standards for indicating pressure. General pressure gauges are based on atmospheric pressure; absolute pressure gauges are based on absolute pressure zero; differential pressure gauges measure the difference between two measured pressures. Pressure gauges are classified into vacuum gauges, pressure vacuum gauges, and micro pressure gauges according to their measurement ranges. , Low-pressure meter, medium pressure meter, and high-pressure meter. Vacuum gauges are used to measure pressure values less than atmospheric pressure; pressure vacuum gauges are used to measure pressure values less than and greater than atmospheric pressure;
The micro pressure gauge is used to measure the pressure value less than 60000 Pa; the low-pressure gauge is used to measure the pressure value of 0～6MPa; the medium pressure gauge is used to measure the pressure value of 10～60MPa; the high-pressure gauge is used to measure the pressure value above 100MPa. The shell of the seismic pressure gauge is made of a fully sealed structure, and the shell is filled with damping oil. Due to its damping effect, it can be used in the working environment vibration or medium pressure (load) pulsation measurement site. The pressure gauge with an electric contact control switch can realize the transmission Information alarm or control function.