Hairpin Structure And Working Principle

Dec 11, 2025

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The hair clip's structure consists of a head, a clip, and a clasp. Its working principle is to use the spring's elasticity to clamp the hair tightly and apply a certain pressure to the hair to maintain its fixation and balance. When the spring relaxes, the hair clip presses down, the spring continues to tighten the hair, and the hair clip lifts up. This cycle repeats, fixing the hair to the clip head.


Its structural principle is: one end is fixed to the scalp, and the other end is connected to the hair through a spring. The hair clip contains a spring and a clasp, and the elasticity of the spring and clasp causes the hair clip to press down and lift up.


The clip is composed of two spring-loaded steel bars arranged in a figure-eight shape, with one steel bar consisting of upper and lower surfaces. Its working principle is: a lever or hinge is installed at the lower end of the steel bar, and the spring works through the lever or hinge. When the hair clip presses down, the lever or hinge is pulled by the lever and drives the clasp to move left and right; when the hair clip lifts up, the lever or hinge is pulled by the lever and drives the clasp to move up and down.


The clip is a spacer inserted between two steel bars. Its function is to secure the hair clip and prevent it from slipping. A spring and a hinge are installed between the two steel bars. When the hair clip is pressed down, the spring pulls the clip, causing the spring arm to rise; when the hair clip is lifted up, the spring arm returns to its original position.