Umbrella borrowing management regulations

An umbrella is a tool that provides a cool environment or covers rain and snow. Below are the umbrella borrowing management regulations that I have compiled for you. I hope it will be useful to you!

Umbrella borrowing management regulations

This is the flood season for the convenience of employees and to avoid heavy rain without umbrellas when they get off work. For use, the company has specially prepared 6 umbrellas for employees to borrow. They are placed on the umbrella stand on the right side of the main entrance of the hall. They are black umbrellas with long handles.

1. Umbrellas are only available for borrowing and use by all current employees of the company. Each employee can borrow one umbrella at a time.

2. When employees borrow umbrellas, they fill in the borrowing registration form (fill in name, department, and borrowing time) at the main duty desk. Compensation for lost umbrellas is RMB 30 per umbrella.

3. Please return the borrowed umbrella the next day, no more than 3 days at most. If the umbrella is not returned within the time limit, you will be compensated RMB 50 per umbrella.

4. Employees must take good care of the borrowed umbrellas to avoid damage, and return them promptly after borrowing. If the umbrella is damaged by man, a compensation of RMB 50 per umbrella shall be made.

5. After using the umbrella, please return it to the company's main duty desk, fill in the borrowing registration form (return time, returner's signature), and have it checked and signed by the security guard or front desk staff on duty.

6. Umbrellas are kept by security personnel. When handing over a shift, the number of umbrellas should be counted and the status of storage, borrowing and whereabouts should be clear.

Overview of umbrellas

Invention

Legend has it that Lu Ban’s wife Yun was also a skilled craftsman. "Jade Chips" also records that she was the inventor of the umbrella, and the first umbrella she gave to her husband was used when he went out to build houses for others.

The word "umbrella" has appeared a long time ago. She probably made an umbrella that can be opened. Who invented the umbrella? There are always different opinions on this issue. Some say that the Egyptians were the first to use umbrellas. As early as 1200 BC, Egyptian nobles often asked slaves to hold parasols for them when traveling. The Romans used umbrellas to protect themselves from the sun in the Mediterranean region.

In China, the umbrella was invented by Lu Ban's wife in 1000 BC. The umbrella is called a "movable house". In Britain, umbrellas only began to be used in the 18th century. Umbrellas were once a special item for women, expressing a woman's attitude towards love. Putting the umbrella up means steadfastness in love; holding the open umbrella in the left hand means "I don't have free time now". Shaking the umbrella slowly indicates lack of confidence or distrust; leaning the umbrella on the right shoulder indicates that one does not want to see you again. By the 19th century, men began to use umbrellas. Because it rains a lot in Britain, umbrellas are an indispensable part of British life. They have become a symbol of the traditional British lifestyle and a must-have for London businessmen and officials. The symbol of the British? John Bull holds an umbrella in his hand. It is also indispensable in literary works and movies. The Umbrella Museum was established in the UK in 1969. Umbrellas also have many uses. Umbrellas are sometimes used as weapons. In 1978, a group of exiled Bulgarians were stabbed with umbrella tips by assassins on Waterloo Bridge and died of poisoning. Some umbrella handles can be sprayed with pepper to stop vicious dogs from chasing and biting.

Development

In ancient times, rainy days and hot summers plagued people, and people had to hide under small pavilions instead of going out. There is such a legend that Luban built many small pavilions around his neighbors for everyone to use, but they still did not allow people to go out freely during the stormy season. Lu Ban's wife then made a lightweight bamboo pavilion with oil paper according to the style of the pavilion built by her husband. This was the earliest umbrella. Lu Ban’s wife said to Lu Ban: The house you built cannot be moved. My umbrella, which can be taken everywhere and provide protection in all seasons?.

Spring

Umbrella spring is an important component of umbrella hardware. The characteristics of the spring make the umbrella more mechanical. The elasticity, torsion, pressure and tension of the spring return The spring characteristics make the spring stronger and more practical. Common umbrella springs include center rod support springs, Z-shaped positioning springs, umbrella frame pressure springs, automatic opening and closing tension springs, etc.

Types of Umbrellas

Oil-paper umbrellas

Oil-paper umbrellas are a type of paper umbrella originated from China and have also spread to other parts of Asia such as Japan, Korea, Vietnam, Thailand, Laos and other places have developed oil-paper umbrellas with local characteristics. As some Hakkas moved to Taiwan to settle, Chinese-style oil-paper umbrellas also developed in Taiwan. Oil-paper umbrellas are not only daily necessities for keeping out the sun and rain, they are also an indispensable item in wedding etiquette. In traditional Chinese weddings, when the bride gets off the sedan after getting married, the bride will use a red oil-paper umbrella to cover the bride to ward off evil spirits. . At traditional Japanese weddings, the bride will also be covered by a red oil-paper umbrella. Elderly people like purple umbrellas, which symbolize longevity, and white umbrellas are used during funerals. Oil-paper umbrellas are also used as props in traditional Japanese dances, and "ban umbrellas" are used in tea ceremony performances.

In early Hakka villages, because "paper" and "zi" are homophonic, when Hakka women got married, the woman usually gave two paper umbrellas as dowry, which meant "to have a child early", and There are four human characters in the word "umbrella" (umbrella), which also symbolizes many children and grandchildren. The paper umbrella forms a circle when opened, and "oil" and "have" are homophonic, which is a blessing for the newlyweds to have a happy life. mean. When a man turns 16, he will be given a pair of paper umbrellas for the same reason at his coming-of-age ceremony.

In religious celebrations, it is often seen that oil-paper umbrellas are used as shelters and propped up on mikoshi. This is based on the meaning of perfection and serves as a symbol for people to protect themselves from the sun and rain, and to ward off evil and avoid evil.

Most of the umbrellas used in daily life are foreign umbrellas, and oil-paper umbrellas are mostly sold as works of art and tourist souvenirs.

Transparent umbrella

Transparent umbrella is a fashionable and personalized umbrella loved by women. It is suitable for rainy days with poor visibility. The transparent umbrella cloth has brighter sight. There are many colors of transparent umbrellas. The most common ones are pure, colorless and transparent. There are also other colors. Some transparent umbrellas are printed with personalized and fashionable patterns, which adds fashion and interest. The styles include straight, Folded etc. The cover of this kind of umbrella is mostly made of thin plastic, which is easy to damage and cheap. Most people who use transparent umbrellas are women.

Sun umbrella

A sun umbrella is an umbrella mainly used to protect against direct sunlight.

When choosing an anti-UV umbrella, it mainly depends on the fabric of the umbrella. Research shows that fabrics with thick umbrella surfaces have better UV resistance than thin ones. Generally speaking, fabrics such as cotton, silk, nylon, and viscose have poor UV protection effects, while polyester has better UV protection. Some consumers believe that the thicker the umbrella surface, the better. The thicker the film, the better the UV protection. In fact, this is not the case. For example, the Paradise Umbrella series has developed a thin but very tight fabric whose protective performance is far better than that of ordinary fabrics. In addition, the darker the color, the better the UV protection. Satin fabric is the best. , followed by twill and plain weave.

Relevant experts also remind consumers to recognize the UV protection performance label. Domestic and foreign standards generally use the UPF value, that is, the ultraviolet protection factor value, to evaluate the UV protection performance of textiles. The UPF value is the ratio of the average amount of UV radiation to unprotected skin. The larger the UPF value, the better the UV protection performance. The upcoming national standard stipulates that only when UPF>30 and the UVA transmittance is less than 5%, it can be called an anti-UV product, and the protection level is marked UPF3; when UPF>50, it indicates that the product is The UV protection performance is excellent, and the protection level is UPF5.

In this summer’s sun protection market, anti-UV sun umbrellas are very popular. When choosing an anti-UV sun umbrella, consumers should understand its characteristics in order to choose a good umbrella that is satisfactory from appearance to quality.

Children's umbrellas

Children's umbrellas are umbrellas specially designed and produced by umbrella manufacturers for children.

Children's umbrellas are divided into three categories:

1. Children's umbrella: This kind of umbrella is suitable for children aged 6 to 9 years old. Generally, the umbrella surface is larger than that of adults. The umbrella should be slightly smaller and lighter. The handle and body of the umbrella are specially designed;

2. Middle-aged children's umbrella: This kind of umbrella is suitable for children aged 5 to 7 years old, and the umbrella surface should be smaller than that of large children. Children's umbrellas are made of relatively soft materials to protect the skin of little hands;

3. Children's umbrellas: This kind of umbrella is small and its purpose is not just for adults to use it to protect themselves from the sun and rain. The most important thing is to use it for entertainment and not of much practical use.

On the market there are generally: maple leaf umbrellas, cartoon umbrellas, etc., with various patterns. The picture case attracts children's curiosity to a great extent. Thus occupying this part of the umbrella market.

Paragliding

Paragliding originated in 1984. It is a flying sport invented by a group of French pilots who love skydiving and hang gliding. It is very popular in Europe, America and Japan. , also set off a whirlwind in Taiwan. A paraglider is different from a traditional parachute in that it is an aircraft. About 20 years ago, French mountaineer Baden, who lived in the small town of Chamonix at the foot of the Alps, used a square parachute to successfully fly down from the Alps to the bottom of the mountain. Many mountaineers followed suit and made further improvements to the parachute. They combined the characteristics of the parachute and the hang glider to create a paraglider that could take off from hillside terrain and fly freely in the air. In 1984, French mountaineer Roter Fillon successfully flew from Mont Blanc in the Alps, which made paragliding famous and quickly became popular around the world. Today, there are hundreds of thousands of paragliding enthusiasts around the world. The paraglider itself has no power. The reason why it can fly is that except for the special shape of the paraglider after it is filled with air (flying wings), it is completely controlled by the pilot and combined with various characteristics in the atmosphere (aerodynamics) to fly. The traditional parachute, that is, the general parachute, can only produce falling resistance in the air and no lift. However, the paraglider will generate speed and lift during flight in the air, and its speed and lift are far greater than its resistance. Because in terms of structure, the inner structure of the paraglider canopy is equipped with an air bag. Before it is filled with air, the paraglider has no substantial edges and corners. Once the inner air bag is filled with air, the front edge of the paraglider will have edges and corners. In this way, when the paraglider flies in the air, the opposite airflow is diverted from the upper and lower surfaces of the wing. The resistance is parallel to the opponent's wind force, and the weight combines with the air above the wing to cause the paraglider to move forward at a speed.

Golf umbrellas

The most common golf umbrellas include straight hand-opening golf umbrellas, straight-handling automatic golf umbrellas, and there are also 2-fold self-opening golf umbrellas. Because the umbrellas are large, they are often more When going for a ride, after a strong wind, those with less strength often find it difficult to hold the umbrella. The more and more user-friendly design has better solved this problem. Improvements have been made on golf umbrellas. The common method is to It is made into double layers. The top of the lower umbrella canopy is hollow, and then the upper layer covers the lower layer. It is larger than the ventilation hole and just covers it. The upper and lower layers are sewn together with a small amount of needlework. It is for normal use. Sometimes, rainwater cannot enter the umbrella, and when the wind blows, the surplus and hollow top is drained out.

Tri-fold umbrella

Tri-fold umbrella is a type of rain gear. As the name suggests, it is an umbrella that can be folded into three folds and opened, making it easy to carry. The tri-fold umbrella has a compact, strong and durable structure and can be used in rain or shine.

The 19th century was the golden age of umbrella development. With the continuous progress of society, people invented many new materials and created a variety of umbrellas that were both lightweight and practical. It was during this period that the three-fold umbrella appeared. With the fluctuation of international raw material prices, the profits of tri-fold umbrellas have also been subject to certain challenges. How to deal with these crises? The Yiwu Umbrella Industry Association actively carries out brand awareness publicity and advocates high quality and high efficiency to improve product competitiveness.

After more than ten years of development, the tri-fold umbrella has established a complete umbrella industry system from raw material suppliers, manufacturers, and sellers, gradually improving the comprehensive competitiveness of folding umbrellas in the umbrella industry. , in order to achieve greater development space.

Multi-fold umbrella

A multi-fold umbrella, including a middle rod (1), an upper nest (2) fixed on the top of the middle rod (1), and the The lower nest (3) of the middle rod (1) is slidably connected, and the multiple ribs (5) supporting the umbrella surface (8); the umbrella surface (8) is an umbrella surface of unequal width, that is, the front edge of the umbrella The distance from the middle rod (1) is small, and the distance between the rear edge of the umbrella and the middle rod (1) is large; accordingly, the ribs (5) include a front rib (53), There are ribs (52) on both sides and a rear rib (51). The front rib (53) has a smaller number of folds, and the rear rib (51) has a larger number of folds. The multi-fold umbrella of the utility model has a large shielding area at the rear, which can prevent people from getting wet behind them when it rains heavily. It also has good visibility in the front and has windproof effect.

Advertising umbrella

As a modern and novel advertising carrier, advertising umbrella has high mobility, bright colors and good visual effects. Its pattern design is not limited and the structure can be selected arbitrarily. As well as beautiful and durable, high quality and low price, etc., it has become an important form of corporate advertising. Advertising umbrellas have advantages that are incomparable to other forms of advertising:

1. High mobility: Advertising umbrellas have The advantages of advertising wherever you go;

2. Good quality and low price: Advertising umbrellas have the advantages of low advertising investment cost, fast manufacturing process, and deep impression on consumers;

3. Wide range of practical uses: Advertising umbrellas have the functions of covering the wind on cloudy days, sheltering from rain on rainy days, and shading the sun on sunny days. They are an indispensable daily necessities for men, women and children;

4. Long advertising time: advertising Umbrellas have a long service life and can be used for long-term advertising of businesses, making them a reliable way of advertising.

Pencil Umbrella

The keel of a pencil umbrella is the thickness of a pencil, which is a very appropriate description. In terms of color, pencils such as colored pencils and crayons are colorful and very fresh and bright. As for the umbrella, I also want to give people the impression that the colorful rows are like a box of colored pencils. It is full of childishness and cuteness, making people unable to put it down. For example, the color of "needle" does not have this impression in people's minds. It is all cold and shining. If the first impression is like this, no one will probably want it.

Weight: about 150 grams

Specifications: 50cm? 6K umbrella surface radius? Number of umbrella cells

Fabric: high-density polyester silk woven luster cloth

Length: about 21 cm when folded

Diameter: about 2 cm in diameter when folded, about 90 cm when opened

Solar umbrella

Solar umbrella type The inflatable aircraft is composed of a paraglider, solar cells, propellers, brushless motors and control parts. The reason why the paraglider was modified instead of designing a solar aircraft was that around 2001, it was known that Americans had applied for a patent for a solar aircraft in China. In order not to infringe, and because the energy of the solar cell could not be used for a long time. Aircrafts can fly at high speeds, but low-speed flights are possible (such as solar-powered aircraft in the United States). It is also considered that inflatable paragliders have good unpowered gliding capabilities and are lighter than wings of the same volume. There are also many advantages. It has good torsion resistance and bending resistance, so it uses the soft wings of an inflatable paraglider, and is equipped with solar cells, brushless motors, etc.

Fill the paraglider with air (modification) (seal the air inlet at the front end and install an air bag of corresponding shape) so that its shape remains unchanged. 2. Install propellers, brushless motors, remote controls (not used for manned use), solar cells, etc. on the upper surface of the inflatable paraglider through brackets to make an unmanned remote control solar paraglider.

2. Innovation points:

1. The inflatable wings of the paraglider can reduce the weight (the same volume ratio as other materials) and can also overcome the original folding problem of the paraglider. , collapse and other phenomena. And it has strong bending resistance.

2. Its flight safety is extremely high. Because it is an inflatable paraglider, and because of its slow flying speed, its stall speed is also low, so even if power is lost in the air, it can still be used as a paraglider. Landed safely. This is also a safer advantage than other aircraft.

3. The flight time is long because it is powered by solar energy. In theory, it can fly continuously for at least one night, several weeks or even longer.

4. Take advantage of the excellent low-speed unpowered gliding ability of paragliders. (The paragliding flight record is 17 hours)

5. Convert solar energy into electrical energy to fly the aircraft, thereby achieving environmental protection, no pollution, and not consuming existing traditional energy.

6. It has its own intellectual property rights and does not infringe the solar aircraft patents applied by Americans in China.

3. Application prospects:

Aerial reconnaissance, communications, advertising aerial photography, fire monitoring, environmental monitoring, remote sensing measurement, etc.

The United States, Israel, Japan and other countries are actively conducting research on solar aircraft.

Space umbrella

A space umbrella is an umbrella-shaped object that can be deployed in space, with a diameter of several meters to tens of meters and a thickness of between a few microns and tens of microns.

In order to deal with enemy multi-spectral detection, the surface of the space umbrella is coated with anti-infrared and visible light coatings. The diameter of the space parachute comes in various specifications, generally 5-10 meters is suitable; the space parachute is usually placed in a turntable parachute bag. When the parachute bag enters space, the micro-nozzle is started to spin, and the space parachute is rotated by the corresponding centrifugal force. Expand. Since the mass and folded volume of the space parachute are very small, the mass and volume of the parachute bag can be made very small (the diameter of the parachute bag can be tens of centimeters and the mass can be hundreds of grams).