First, hollow out the solid foam, connect the small motor with wires and stuff it into the foam (to prevent the rotor shaft of the small motor from leaking foam). Connect the wire to the battery, plug it into the foam, cut the small pieces of paper into rows with scissors and put them on the rotor shaft of the small motor!
The invention and production.
A small fan only needs a small motor, two 5th batteries, some short wires, a solid plastic foam, a pair of scissors and some cardboard!
First, hollow out the solid foam, connect the small motor with wires and stuff it into the foam (to prevent the rotor shaft of the small motor from leaking foam). Connect the wire to the battery, plug it into the foam, cut the small pieces of paper into rows with scissors and put them on the rotor shaft of the small motor!
Sprinkle a water bottle. Take a jar and poke some holes in the tail.
Take an empty eggshell and coat it with wax (thin)
Draw a picture on it with something sharp (cut the wax)
Soak in vinegar for a few hours, and remove the wax.
The carved place was darkened by acetic acid.
Turned into a small production!
Nowadays, popular clothes hangers generally have no windproof function, and users often encounter such troubles: a newly washed dress hangs on a rope to dry, and when the wind blows, it falls to the ground and needs to be washed again. The self-locking windbreaker hook I invented can relieve everyone's troubles. The above picture is a schematic diagram of the self-locking windproof clothes hanger: in the above picture, (1) is a lock sleeve, (2) is a lock column, and a lever is formed by a rotating shaft (3) and a crank (4), and the lever rotates with (3) as a fulcrum under the action of a counterweight (5). When hanging clothes, just lift the crank (4) by hand or hook. Under the action of gravity, the lock sleeve (1) and the lock column (2) are automatically separated. The user can hang the clothes hook on the rope smoothly and then loosen the crank. Under the action of the counterweight (5), the lock post (2) is automatically connected with the lock sleeve (1). The process of taking out the clothes hanger is also very simple: just lift the crank (4) upward by hand or hook, the lock will automatically open, and the user can conveniently take off the clothes hanger. This self-locking windproof clothes rack can not only be hung on the rope by hand to dry clothes, but also the user does not need to climb up if he wants to dry clothes in a higher place. He can hang or take off his clothes easily just by holding the crank with the hook. At the same time, the clothes hanger also has the characteristics of simple manufacture, good reliability and low cost. My little invention won the national invention patent.
The lid of this carton is usually covered to prevent dirt and dust from entering. When you want to take the paper in the box, just lift the lid. With the lifting of the lid, the paper in the box will be lifted automatically, which is very convenient to pick up. After use, once the lid is closed, it will return to its original position. This kind of automatic paper box is most suitable for holding toilet paper. The size of the carton can be designed according to your own needs. Multimedia teaching resource library provided by China Education Star.