Pressing type anti-falling toothed thumbtack

Abstract

The technical invention relates to a pressing type anti-falling toothed thumbtack. The thumbtack mainly comprises a thumbtack cap, a chuck, thumbtack teeth, a spring, a sliding claw sleeve, a metal casing, a pushing rod and the like. The thumbtack is mainly applied to the occasions that documents and posters are nailed on foam boards. According to the use flow, the thumbtack is inserted into a foam board firstly, the thumbtack cap is pressed, the chuck slides down through a sleeve guiding rail in the sliding claw sleeve, and the chuck rotates clockwise when moving out of the sliding claw sleeve and is clamped in a clamping groove of the sliding claw sleeve. Under the transfer action of force, the pushing rod advances, and the thumbtack teeth extend out of holes in the metal casing and areclamped in the foam board. If the thumbtack is required to be pulled out, all that is required is to press a button at the top end of the thumbtack cap again, under the action of the spring force, thechuck enters the sleeve guiding rail of the sliding claw sleeve again to bring the pushing rod to move together, the thumbtack teeth are pulled out, the thumbtack can be utilized again after being pulled out, and the phenomenon that the thumbtack falls off due to external factors is avoided most possibly.

Description

technical field [0001] The technical invention relates to a pushpin, in particular to a push-type anti-dropping toothed pushpin. The utility model is mainly used in the occasion of nailing documents and posters on the foam board, and belongs to the technical field of small-scale instrument preparation and application. Background technique [0002] Pushpins are widely used in daily life, and can be used in bulletin boards such as communities, streets, companies, schools, etc., and can also be used for outdoor posters, pinning drawings and documents, etc. The biggest problem during use is that the thumbtacks fall off, resulting in the loss of files. When the thumbtack is inserted into a loose material, due to the gravitational effect of the thumbtack itself and the interference of the external environment, such as vibration, wind and other factors, the thumbtack is easy to fall off. After falling off, it not only causes the loss of documents but also easily causes environmen...

AI Technical Summary

Problems solved by technology

The biggest problem during use is that the thumbtacks fall off, resulting in the loss of files

When the thumbtack is inserted into a loose material, due to the gravity of the thumbtack itself and the interference of the external environment, such as vibration, wind and other factors, the thumbtack is easy to fall off

After falling off, it will not only cause the loss of documents but also easily cause environmental pollution

At present, there is no fall-off pushpin that can be used for nailing files on the market

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