The French published a two-wheeled wooden carriage in 1791; the German Baron Carl Durais is generally recognized as the inventor of the bicycle. In 1817, he created a wooden horse bicycle with a handle. A direction handle was installed on the front wheel of the car. This was the first time people saw a strange car that did not require a horse, and it was also people's earliest impression of a bicycle. His invention was conceived based on the principle of roller skates. He thought that if people put a seat cushion on the two wheels, and people sit on it and step forward alternately with their feet hanging down, the car can move forward like an ice skate. His wooden horse bicycle was officially patented in Germany and France in 1818, becoming the originator of bicycles. This bicycle was made of wood and relied on people's two feet to pedal on the ground. From today's perspective, it looks like The wooden toy Trojan horse was several times heavier than the current iron horse. The invention of this Trojan horse bicycle made a great contribution to mankind. The earliest wooden carriages had no handles and could not control the direction, could not turn, and could only move forward in a straight line. The rotation and stopping of the wooden wheels were completely controlled by kicking the ground with both feet; after Durais installed the wooden frame and handles on the car, , it is more convenient to turn or move, without having to stop kicking the ground with both feet, let alone mentioning the direction of movement of the car; this car is used as a toy horse. In 1819, the United Kingdom and Germany also established the earliest bicycle schools in the history of cycling, teaching people how to ride a toy horse-hobby horse; in the era when there were no cars and trains, France, the United Kingdom, and the United States, which used horse-drawn carriages as transportation, formed To start the trend of riding toy horses, people get on the toy horses and pedal harder. The faster the speed, the more stable the car. This trend of riding toy horses has lasted for about ten years in Europe and the United States. In 1818, Dening Johnson, a British blacksmith and machinist, took the lead in replacing wood with iron and replacing the frame of wheels with iron. He then founded two schools in London to train people to learn and Ride a bike. Later, the British called this interesting car hobby horses. This iron car could reach a speed of thirteen kilometers per hour when ridden by skilled and experienced people. In 1830, the French government officially decided to use toy horses as a means of transportation for postmen to deliver letters; in 1839, Thomas Macmillan, a blacksmith in Scotland, improved the hobby horse. He kept thinking about how to sit in the car and put his feet on it. The bicycle can move forward without touching the ground. Finally, he designed a bicycle with a front wheel larger than the rear wheel, and a pedal and a tribute rod at the rear wheel to drive the bicycle. When riding, there is no need to put your feet on the ground to turn. The wheel moves forward, which is also a great progress in the invention of the bicycle. In 1861, the French doll manufacturer Michanx invented the front-wheel drive bicycle, which added pedals directly to the front axle. With this bicycle, you could ride all over Europe. They speculate that the key to making a car go faster lies in the size of the wheel. The larger the wheel, the longer the distance it can roll in one circle and the faster it will go. In 1867, Michael founded the company and began mass manufacturing. Due to extensive promotion and use, bicycles began to be mass-produced at this time. Later, bicycles were manufactured based on this bicycle. Paris, France was the bicycle manufacturing center at that time; France held the first ever bicycle competition at the racecourse in 1868. A bicycle race, using this bicycle. In 1869, the French invented the strip to drive the rear wheel. By this time, the bicycle was considered a complete version. In 1870, the British James Starley designed a bicycle with large and small wheels. At that time, the diameter of the rear wheel was only 90 centimeters, but the diameter of the front drive wheel was more than 125 centimeters, and the driving speed was quite fast; at the same time, the French also The same improvement was made, and the material of the car was changed from wood to iron and rubber parts. It was also front-wheel drive, and the diameter of the front wheels was several times larger than the rear wheels. Riding this kind of bike is as high as a horse and is very majestic, but it is very dangerous to accelerate when going downhill and it is easy to fall. Due to the height, getting on and off the bike is dangerous. In 1869, the French invented the use of a chain to drive the rear wheel, and a safety bicycle appeared. In 1874, the British James Starley invented a wire rim and built a tricycle, which became the favorite of ladies at that time. In 1885, the British improved the bicycle so that the front and rear wheels were the same size and used a chain drive. They called it a roving bicycle. This model was the prototype of a modern bicycle.
a29 In 1888, a veterinarian (John Boyd Dunlop) living in Ireland invented the rubber pneumatic tire. This was a very important invention in the history of bicycle development. It not only solved the most uncomfortable vibration problem of bicycles for many years, but also made bicycles more popular. The speed has improved a lot. In fact, someone had invented rubber tires before, but because rubber was very expensive at that time, it was not widely used. Since the invention of the first bicycle by a German baron, it has been continuously developed by many people, and now the bicycle is completely finalized. Compared with the bicycles developed in the past, the biggest improvement is that the height has become lower and the materials have become better; in terms of transmission, the rear wheel is driven by strips, which increases the stability of the bicycle. The off-road mountain bike developed by a group of American hippies in the 1970s changed the road bike used for racing in the past to fat tires and flat handles, becoming another of the latest outdoor leisure sports for modern people; quick-release front and rear The wheel device makes it easy to carry the bicycle on your back or carry it in a vehicle. The light body and many peripheral equipment make riding a bicycle both sporty and leisurely. Riding a bicycle gives you a sense of showing off and superiority. It gradually evolved from a wooden horse to an iron horse, and the materials used changed from wood to iron, steel pipes, molybdenum-chromium alloys, titanium alloys and carbon fiber materials, etc., became more and more lightweight, and the types of bicycles can also be divided into functional categories. Products such as bicycles, mountain bikes, station wagons, general bicycles and even electric bicycles meet modern people's requirements for bicycles to be both comfortable and multi-functional. The integration of bicycle research and development with the human body is becoming increasingly important.