In electronic devices, pin is a common tool in the field of electrical connectors, and pin is widely used in PCB circuit board of electronics, electrical appliances and instruments. Its function is to play a bridge function between blocked or isolated circuits in the circuit, and to take on the task of current or signal transmission. However, in the existing technology, most pins used in electronic devices are common The fixed structure pin has the following defects:
The ordinary fixed structure pin cannot change the length of the pin to adapt to different occasions, which brings troubles to people's use; the structure of the general fixed structure pin is too small, which is not convenient for people to take, and is not conducive to people's operation and use.
In order to overcome the shortcomings of the existing technical scheme, the utility model provides a pin with variable length, which not only solves the use problems caused by the ordinary fixed structure pin, but also greatly increases the use degree of the pin, increases the construction efficiency, provides greater convenience for construction, facilitates people to take it, and is convenient for installation, operation and use, and effectively solves the background technology The problem.
The technical solution adopted by the utility model to solve the technical problem is: a pin with variable length, including a pin holder disc and a pin post, the pin post is fixedly installed on the upper surface of the pin holder disc through a pressing disc, and the top of the pin post is symmetrically installed with four sector clamping rings, the bottom center of the four sector clamping rings is provided with an adjustment slot, and the The outer side of the fan-shaped clamping ring is sleeved with a locking cover, and the middle of the regulating slot hole is connected with an expansion pin, the expansion pin passes through the fan-shaped clamping ring and the locking cover and extends to the outer side of the pin column, and the inner end of the expansion pin is provided with an outer thread, while the inner surface of the regulating slot hole is provided with an inner thread corresponding to the inner thread, and the pin seat plate is a circular platform structure And the bottom side surface of the pin seat plate is provided with a pin socket, the middle of the pin socket is provided with a wiring cylinder, and the outer side of the wiring cylinder is provided with a protective rubber washer.
As an optional technical scheme of the utility model, the center angle of the sector clamp ring is 90 degrees, and the through hole radius formed at the top of the four sector clamp rings during extrusion is 2mm smaller than that of the expansion pin.
As an optional technical solution of the utility model, the locking cover includes a round table cover plate and a cylindrical base, the through hole radius at the top of the round table cover plate is 2mm larger than the expansion pin, and the length of the round table cover plate is 5mm shorter than the length of the sector clamp ring, the inner side of the cylindrical base is provided with an external pressure thread, and the top side of the pin column is provided with an external pressure thread on the cylindrical side The internal pressure thread corresponding to the thread.
As an optional technical solution of the utility model, the regulating slot hole is of cylindrical structure, and the radius of the regulating slot hole is 0.5mm larger than that of the expansion pin.
As an optional technical scheme of the utility model, the pin post, sector clamp ring, expansion pin and wiring cylinder are all made of spring steel, and the pin seat plate, pressing plate and locking cover are all made of silicon rubber.
The utility model is provided with an adjusting slot hole on the pin column, which can adjust the relative distance between the extension pin and the pin column by rotating the thread of the extension pin, thus changing the length of the pin to meet the use requirements of different occasions, thus improving the use range of the pin with variable length, and also has a locking sleeve cover and a fan-shaped clamping ring, which can The retractable pin is firmly pressed to avoid the displacement of the pin in use. It is also convenient for people's operation and use. It also has a pin holder plate, which is convenient for people to take, larger structure, convenient for people to observe, reduces the trouble for people to find the pin, improves the working efficiency of people's pin, and has a connecting cylinder, which is convenient for people to carry out pin information Passing between numbers.