Double-layer self-locking pin

Abstract

The invention discloses a double-layer self-locking pin. The double-layer self-locking pin comprises an umbrella cap, the middle of the umbrella cap is connected with a pin rod, an upper gasket is arranged below the umbrella cap, the pin rod penetrates through the middle of the upper gasket and is fixedly connected with the upper gasket, and a lower gasket is arranged below the upper gasket. According to the double-layer self-locking pin, holes do not need to be punched, materials can be punched directly through cooperation of pins and a matched nailing machine, direct one-time forming is achieved, and long time can be saved; the thickness of a product can be adjusted without customizing pins with various lengths; the circular-arc-shaped umbrella cap is of a double-layer design and is attractive, elegant, firm and durable; and when a customer installs the umbrella, due to the fact that the 360-degree circular opening is formed between the umbrella cap and the lower gasket, the customercan sleeve the connected stainless steel wire or spring without seeing the umbrella with eyes, installation and operation are easy, and the umbrella is very convenient to use and practical especiallyin narrow space.

Description

technical field [0001] The invention relates to the technical field of pins, in particular to a double-layer self-locking pin. Background technique [0002] In production, many fabric or leather textile processing factories will use pins to fix between layers of materials. At this stage, three types of pins are often used in the market. The first type of pin: first drill a hole, insert the pin, and use pliers to clamp the corners of the pin separately, so that it is stuck with the object, which is time-consuming and laborious; it must be installed with iron wire Or the rope passes through the small round hole of the pin and then returns to pass through the other end of the pin hole, and then fix the two sides. In a relatively narrow area, the small round hole of the pin cannot be seen by the eyes, and the small iron wire cannot be passed through accurately. If the hole is too small, it will be very difficult to install. [0003] The second type of pin: the pin adopts the s...

AI Technical Summary

Problems solved by technology

[0004] The third type of pin: Drill a hole first, insert it with a rivet, and fix the rivet with a rivet machine, but it is only suitable for relatively thin materials, and the hole must be opened

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