How to make simple inventions, make your own simple inventions

In this way, one of my previous inventions in elementary school, which won the first prize, will be used for you to learn from.

Roughly is the improvement of the blackboard groove, the traditional blackboard groove is horizontal (a horizontal iron groove) to divide it into several sections, and then with the horizontal plane at a certain angle (so that the object can slide down the chute), the smoothness and inclination angle of the chute are to be considered, so that the teacher accidentally broke the chalk head and chalk ash on the inclined plane of gravity of the component greater than or equal to the maximum static friction, so that it slides into the small box at the end of the chute.

The design shape is roughly (symbol schematic).

Blackboard |Mouth mouth mouth.

The advantage of this invention is that it can reduce the burden of cleaning the chalk groove on duty, and only need to remove the box and throw it out every day.

Disadvantages: Increasing the length of the blackboard slot also increases the school's funding. Moreover, some teachers who advocate economy want to pick up the slightly longer chalk head and use it again, which brings trouble to the recovery.

Other specific parameters and designs are not disclosed here.

Original ideas, I hope to inspire you, maybe you can draw inferences, such as adding defrosters to classroom windows, designing ventilation equipment for classrooms, etc.

As long as you pay attention to observation and are lazy to go out of the realm (if you encounter difficulties and think "it would be nice if you do it", then if you have a goal, you will create), there will be good inventions. This may be as simple as the teacher assigning homework.

Finally, I wish you a happy Chinese New Year and progress in your studies.

There are a lot of small inventions, what kind of invention do you want to make?

1. Vehicle overload alarm

Production method: 1. Assemble the alarm;

2. Make a good car model;

3. Hide the assembled alarm in the car model;

4. Connect the alarm and the electric key with a wire.

2. Multi-functional windproof drying rack.

Instructions: Make 4 pieces of bamboo 20 cm long, cm wide and cm thick. Drill a hole with a diameter of 1 mm in the middle of each end of the bamboo piece, and use rivets to connect the 4 pieces of bamboo into a square. Choose any two ends and connect them with a 40 cm long clamp rope.

3. Automatic water feeder.

Production method: 1. Material preparation: a 1000ml cola bottle, a mineral water bottle, and a plastic tube with a diameter of 40 cm.

2. Assembly steps:

1) Drill 2 cm diameter holes in the cap of the mineral water bottle.

2) Cut the plastic pipe into a length of 30 cm for the positioning water pipe and 10 cm for the water supply pipe, and insert them respectively, one of the long ones is inserted into the bottom of the bottle, and the other is inserted into the mouth of the bottle.

3) Take the bottom 10 cm of the cola bottle and cut it out as a water basin, and drill a hole with a diameter of centimeters on the top and bottom of the water basin.

4) Insert the water supply pipe into the lower hole, and position the water pipe into the lower hole.

5) Use iron wire to connect the water bottle and the basin.

Fourth, the ball picker.

Use: Press the bottom grid of the ball picker against the ground table tennis ball, the ball can enter smoothly without falling, and you can pick up many in a row, and then the ball picker is erected, so that the round hole is mocked, and the table tennis ball rolls out.

The simple way to make a gizmo is as follows:

1. Homemade badminton.

Prepare materials: 1 empty drink bottle, 2 foam fruit net covers, 1 rubber band, 1 glass marble.

Production process: 1. Take a 250ml empty beverage bottle and cut off the upper part of the bottle.

2. Divide the cut part into 8 parts, cut it to the neck of the neck with scissors, and then cut each part into the shape of petals of the same size.

3. Put the foam fruit net sleeve on the outside of the bottle and fix it at the mouth of the bottle with a rubber band.

4. Wrap another foam fruit net sleeve around a glass marble, stuff it into the mouth of the bottle, plug it tightly and expose about 1 cm.

5. Cut off half of the table tennis ball, cover the bottom surface of the hemisphere on the mouth of the bottle, cut the four sides into a whisker, cover the mouth of the bottle and fix it with a rubber band.

6. After beautification and modification, a homemade shuttlecock was completed.

2. Homemade soap paper.

Materials and tools: white paper with good moisture absorption, small pieces of soap, a brush and disposable beverage cans. Directions:

First, chop the soap and put it in a jar, put the cup on the stove after filling it with an appropriate amount of water, wait for the soap to melt, cut the white paper into the size of a matchbox, apply the soap liquid one by one, and then take it out to dry it to become soap paper.

3. Homemade hot air balloons.

1. First of all, we use soft paper to cut out 6 or 8 leaf-like pieces of paper.

2. Fold them in half and glue their edges together to make a balloon.

3. Glue the four wires to the bottom of the balloon with adhesive tape. Attach the other end of the thread to the table with plasticine.

4. Try to adjust the speed of the hair dryer very slowly. Aim the blower up at the bottom opening and turn the switch on. The balloon will slowly grow larger, tighten the string, and leave the table.